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Create Silo Vaul... | 12831868 | 10 hrs ago | IN | 0 S | 0.25461042 | ||||
Create Silo Vaul... | 12829852 | 10 hrs ago | IN | 0 S | 0.25559813 | ||||
Create Silo Vaul... | 12805326 | 13 hrs ago | IN | 0 S | 0.25520101 | ||||
Create Silo Vaul... | 12548332 | 45 hrs ago | IN | 0 S | 0.256188 | ||||
Create Silo Vaul... | 12534836 | 47 hrs ago | IN | 0 S | 0.25461461 | ||||
Create Silo Vaul... | 12448287 | 2 days ago | IN | 0 S | 0.25560754 | ||||
Create Silo Vaul... | 12303809 | 3 days ago | IN | 0 S | 0.26382461 | ||||
Create Silo Vaul... | 12303144 | 3 days ago | IN | 0 S | 0.30737678 |
Latest 17 internal transactions
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12829852 | 10 hrs ago | Contract Creation | 0 S | |||
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12548332 | 45 hrs ago | Contract Creation | 0 S | |||
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12534836 | 47 hrs ago | Contract Creation | 0 S | |||
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12448287 | 2 days ago | Contract Creation | 0 S | |||
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Contract Source Code Verified (Exact Match)
Contract Name:
SiloVaultsFactory
Compiler Version
v0.8.28+commit.7893614a
Optimization Enabled:
Yes with 200 runs
Other Settings:
cancun EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.28; import {Clones} from "openzeppelin5/proxy/Clones.sol"; import {ISiloVault} from "./interfaces/ISiloVault.sol"; import {ISiloVaultsFactory} from "./interfaces/ISiloVaultsFactory.sol"; import {EventsLib} from "./libraries/EventsLib.sol"; import {SiloVault} from "./SiloVault.sol"; import {VaultIncentivesModule} from "./incentives/VaultIncentivesModule.sol"; /// @title SiloVaultsFactory /// @dev Forked with gratitude from Morpho Labs. /// @author Silo Labs /// @custom:contact [email protected] /// @notice This contract allows to create SiloVault vaults, and to index them easily. contract SiloVaultsFactory is ISiloVaultsFactory { /* STORAGE */ address public immutable VAULT_INCENTIVES_MODULE_IMPLEMENTATION; /// @inheritdoc ISiloVaultsFactory mapping(address => bool) public isSiloVault; mapping(address owner => uint256 counter) public counter; /* CONSTRUCTOR */ constructor() { VAULT_INCENTIVES_MODULE_IMPLEMENTATION = address(new VaultIncentivesModule()); } /* EXTERNAL */ /// @inheritdoc ISiloVaultsFactory function createSiloVault( address initialOwner, uint256 initialTimelock, address asset, string memory name, string memory symbol ) external virtual returns (ISiloVault siloVault) { bytes32 salt = keccak256(abi.encodePacked( counter[msg.sender]++, msg.sender, initialOwner, initialTimelock, asset, name, symbol )); VaultIncentivesModule vaultIncentivesModule = VaultIncentivesModule( Clones.cloneDeterministic(VAULT_INCENTIVES_MODULE_IMPLEMENTATION, salt) ); siloVault = ISiloVault(address( new SiloVault(initialOwner, initialTimelock, vaultIncentivesModule, asset, name, symbol)) ); vaultIncentivesModule.__VaultIncentivesModule_init(initialOwner, siloVault); isSiloVault[address(siloVault)] = true; emit EventsLib.CreateSiloVault( address(siloVault), msg.sender, initialOwner, initialTimelock, asset, name, symbol ); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/Clones.sol) pragma solidity ^0.8.20; import {Errors} from "../utils/Errors.sol"; /** * @dev https://eips.ethereum.org/EIPS/eip-1167[ERC-1167] is a standard for * deploying minimal proxy contracts, also known as "clones". * * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies * > a minimal bytecode implementation that delegates all calls to a known, fixed address. * * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2` * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the * deterministic method. */ library Clones { /** * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`. * * This function uses the create opcode, which should never revert. */ function clone(address implementation) internal returns (address instance) { return clone(implementation, 0); } /** * @dev Same as {xref-Clones-clone-address-}[clone], but with a `value` parameter to send native currency * to the new contract. * * NOTE: Using a non-zero value at creation will require the contract using this function (e.g. a factory) * to always have enough balance for new deployments. Consider exposing this function under a payable method. */ function clone(address implementation, uint256 value) internal returns (address instance) { if (address(this).balance < value) { revert Errors.InsufficientBalance(address(this).balance, value); } /// @solidity memory-safe-assembly assembly { // Stores the bytecode after address mstore(0x20, 0x5af43d82803e903d91602b57fd5bf3) // implementation address mstore(0x11, implementation) // Packs the first 3 bytes of the `implementation` address with the bytecode before the address. mstore(0x00, or(shr(0x88, implementation), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000)) instance := create(value, 0x09, 0x37) } if (instance == address(0)) { revert Errors.FailedDeployment(); } } /** * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`. * * This function uses the create2 opcode and a `salt` to deterministically deploy * the clone. Using the same `implementation` and `salt` multiple time will revert, since * the clones cannot be deployed twice at the same address. */ function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) { return cloneDeterministic(implementation, salt, 0); } /** * @dev Same as {xref-Clones-cloneDeterministic-address-bytes32-}[cloneDeterministic], but with * a `value` parameter to send native currency to the new contract. * * NOTE: Using a non-zero value at creation will require the contract using this function (e.g. a factory) * to always have enough balance for new deployments. Consider exposing this function under a payable method. */ function cloneDeterministic( address implementation, bytes32 salt, uint256 value ) internal returns (address instance) { if (address(this).balance < value) { revert Errors.InsufficientBalance(address(this).balance, value); } /// @solidity memory-safe-assembly assembly { // Stores the bytecode after address mstore(0x20, 0x5af43d82803e903d91602b57fd5bf3) // implementation address mstore(0x11, implementation) // Packs the first 3 bytes of the `implementation` address with the bytecode before the address. mstore(0x00, or(shr(0x88, implementation), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000)) instance := create2(value, 0x09, 0x37, salt) } if (instance == address(0)) { revert Errors.FailedDeployment(); } } /** * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}. */ function predictDeterministicAddress( address implementation, bytes32 salt, address deployer ) internal pure returns (address predicted) { /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) mstore(add(ptr, 0x38), deployer) mstore(add(ptr, 0x24), 0x5af43d82803e903d91602b57fd5bf3ff) mstore(add(ptr, 0x14), implementation) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73) mstore(add(ptr, 0x58), salt) mstore(add(ptr, 0x78), keccak256(add(ptr, 0x0c), 0x37)) predicted := keccak256(add(ptr, 0x43), 0x55) } } /** * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}. */ function predictDeterministicAddress( address implementation, bytes32 salt ) internal view returns (address predicted) { return predictDeterministicAddress(implementation, salt, address(this)); } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import {IERC20Permit} from "openzeppelin5/token/ERC20/extensions/ERC20Permit.sol"; import {IERC4626} from "openzeppelin5/interfaces/IERC4626.sol"; import {MarketConfig, PendingUint192, PendingAddress} from "../libraries/PendingLib.sol"; import {IVaultIncentivesModule} from "./IVaultIncentivesModule.sol"; struct MarketAllocation { /// @notice The market to allocate. IERC4626 market; /// @notice The amount of assets to allocate. uint256 assets; } interface IMulticall { function multicall(bytes[] calldata) external returns (bytes[] memory); } interface IOwnable { function owner() external view returns (address); function transferOwnership(address) external; function renounceOwnership() external; function acceptOwnership() external; function pendingOwner() external view returns (address); } /// @dev This interface is used for factorizing ISiloVaultStaticTyping and ISiloVault. /// @dev Consider using the ISiloVault interface instead of this one. interface ISiloVaultBase { function DECIMALS_OFFSET() external view returns (uint8); function INCENTIVES_MODULE() external view returns (IVaultIncentivesModule); /// @notice method for claiming and distributing incentives rewards for all vault users function claimRewards() external; /// @notice Returns whether the reentrancy guard is entered. function reentrancyGuardEntered() external view returns (bool); /// @notice The address of the curator. function curator() external view returns (address); /// @notice Stores whether an address is an allocator or not. function isAllocator(address _target) external view returns (bool); /// @notice The current guardian. Can be set even without the timelock set. function guardian() external view returns (address); /// @notice The current fee. function fee() external view returns (uint96); /// @notice The fee recipient. function feeRecipient() external view returns (address); /// @notice The current timelock. function timelock() external view returns (uint256); /// @dev Stores the order of markets on which liquidity is supplied upon deposit. /// @dev Can contain any market. A market is skipped as soon as its supply cap is reached. function supplyQueue(uint256) external view returns (IERC4626); /// @notice Returns the length of the supply queue. function supplyQueueLength() external view returns (uint256); /// @dev Stores the order of markets from which liquidity is withdrawn upon withdrawal. /// @dev Always contain all non-zero cap markets as well as all markets on which the vault supplies liquidity, /// without duplicate. function withdrawQueue(uint256) external view returns (IERC4626); /// @notice Returns the length of the withdraw queue. function withdrawQueueLength() external view returns (uint256); /// @notice Stores the total assets managed by this vault when the fee was last accrued. /// @dev May be greater than `totalAssets()` due to removal of markets with non-zero supply or socialized bad debt. /// This difference will decrease the fee accrued until one of the functions updating `lastTotalAssets` is /// triggered (deposit/mint/withdraw/redeem/setFee/setFeeRecipient). function lastTotalAssets() external view returns (uint256); /// @notice Submits a `newTimelock`. /// @dev Warning: Reverts if a timelock is already pending. Revoke the pending timelock to overwrite it. /// @dev In case the new timelock is higher than the current one, the timelock is set immediately. function submitTimelock(uint256 _newTimelock) external; /// @notice Accepts the pending timelock. function acceptTimelock() external; /// @notice Revokes the pending timelock. /// @dev Does not revert if there is no pending timelock. function revokePendingTimelock() external; /// @notice Submits a `newSupplyCap` for the market defined by `marketParams`. /// @dev Warning: Reverts if a cap is already pending. Revoke the pending cap to overwrite it. /// @dev Warning: Reverts if a market removal is pending. /// @dev In case the new cap is lower than the current one, the cap is set immediately. function submitCap(IERC4626 _market, uint256 _newSupplyCap) external; /// @notice Accepts the pending cap of the market defined by `marketParams`. function acceptCap(IERC4626 _market) external; /// @notice Revokes the pending cap of the market defined by `market`. /// @dev Does not revert if there is no pending cap. function revokePendingCap(IERC4626 _market) external; /// @notice Submits a forced market removal from the vault, eventually losing all funds supplied to the market. /// @notice Funds can be recovered by enabling this market again and withdrawing from it (using `reallocate`), /// but funds will be distributed pro-rata to the shares at the time of withdrawal, not at the time of removal. /// @notice This forced removal is expected to be used as an emergency process in case a market constantly reverts. /// To softly remove a sane market, the curator role is expected to bundle a reallocation that empties the market /// first (using `reallocate`), followed by the removal of the market (using `updateWithdrawQueue`). /// @dev Warning: Removing a market with non-zero supply will instantly impact the vault's price per share. /// @dev Warning: Reverts for non-zero cap or if there is a pending cap. Successfully submitting a zero cap will /// prevent such reverts. function submitMarketRemoval(IERC4626 _market) external; /// @notice Revokes the pending removal of the market defined by `market`. /// @dev Does not revert if there is no pending market removal. function revokePendingMarketRemoval(IERC4626 _market) external; /// @notice Submits a `newGuardian`. /// @notice Warning: a malicious guardian could disrupt the vault's operation, and would have the power to revoke /// any pending guardian. /// @dev In case there is no guardian, the gardian is set immediately. /// @dev Warning: Submitting a gardian will overwrite the current pending gardian. function submitGuardian(address _newGuardian) external; /// @notice Accepts the pending guardian. function acceptGuardian() external; /// @notice Revokes the pending guardian. function revokePendingGuardian() external; /// @notice Sets `newAllocator` as an allocator or not (`newIsAllocator`). function setIsAllocator(address _newAllocator, bool _newIsAllocator) external; /// @notice Sets `curator` to `newCurator`. function setCurator(address _newCurator) external; /// @notice Sets the `fee` to `newFee`. function setFee(uint256 _newFee) external; /// @notice Sets `feeRecipient` to `newFeeRecipient`. function setFeeRecipient(address _newFeeRecipient) external; /// @notice Sets `supplyQueue` to `newSupplyQueue`. /// @param _newSupplyQueue is an array of enabled markets, and can contain duplicate markets, but it would only /// increase the cost of depositing to the vault. function setSupplyQueue(IERC4626[] calldata _newSupplyQueue) external; /// @notice Updates the withdraw queue. Some markets can be removed, but no market can be added. /// @notice Removing a market requires the vault to have 0 supply on it, or to have previously submitted a removal /// for this market (with the function `submitMarketRemoval`). /// @notice Warning: Anyone can supply on behalf of the vault so the call to `updateWithdrawQueue` that expects a /// market to be empty can be griefed by a front-run. To circumvent this, the allocator can simply bundle a /// reallocation that withdraws max from this market with a call to `updateWithdrawQueue`. /// @dev Warning: Removing a market with supply will decrease the fee accrued until one of the functions updating /// `lastTotalAssets` is triggered (deposit/mint/withdraw/redeem/setFee/setFeeRecipient). /// @dev Warning: `updateWithdrawQueue` is not idempotent. Submitting twice the same tx will change the queue twice. /// @param _indexes The indexes of each market in the previous withdraw queue, in the new withdraw queue's order. function updateWithdrawQueue(uint256[] calldata _indexes) external; /// @notice Reallocates the vault's liquidity so as to reach a given allocation of assets on each given market. /// @dev The behavior of the reallocation can be altered by state changes, including: /// - Deposits on the vault that supplies to markets that are expected to be supplied to during reallocation. /// - Withdrawals from the vault that withdraws from markets that are expected to be withdrawn from during /// reallocation. /// - Donations to the vault on markets that are expected to be supplied to during reallocation. /// - Withdrawals from markets that are expected to be withdrawn from during reallocation. /// @dev Sender is expected to pass `assets = type(uint256).max` with the last MarketAllocation of `allocations` to /// supply all the remaining withdrawn liquidity, which would ensure that `totalWithdrawn` = `totalSupplied`. /// @dev A supply in a reallocation step will make the reallocation revert if the amount is greater than the net /// amount from previous steps (i.e. total withdrawn minus total supplied). function reallocate(MarketAllocation[] calldata _allocations) external; } /// @dev This interface is inherited by SiloVault so that function signatures are checked by the compiler. /// @dev Consider using the ISiloVault interface instead of this one. interface ISiloVaultStaticTyping is ISiloVaultBase { /// @notice Returns the current configuration of each market. function config(IERC4626) external view returns (uint184 cap, bool enabled, uint64 removableAt); /// @notice Returns the pending guardian. function pendingGuardian() external view returns (address guardian, uint64 validAt); /// @notice Returns the pending cap for each market. function pendingCap(IERC4626) external view returns (uint192 value, uint64 validAt); /// @notice Returns the pending timelock. function pendingTimelock() external view returns (uint192 value, uint64 validAt); } /// @title IMetaMorpho /// @dev Forked with gratitude from Morpho Labs. /// @author Silo Labs /// @custom:contact [email protected] /// @dev Use this interface for SiloVault to have access to all the functions with the appropriate function signatures. interface ISiloVault is ISiloVaultBase, IERC4626, IERC20Permit, IOwnable, IMulticall { /// @notice Returns the current configuration of each market. function config(IERC4626) external view returns (MarketConfig memory); /// @notice Returns the pending guardian. function pendingGuardian() external view returns (PendingAddress memory); /// @notice Returns the pending cap for each market. function pendingCap(IERC4626) external view returns (PendingUint192 memory); /// @notice Returns the pending timelock. function pendingTimelock() external view returns (PendingUint192 memory); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import {ISiloVault} from "./ISiloVault.sol"; /// @title ISiloVaultsFactory /// @dev Forked with gratitude from Morpho Labs. /// @author Silo Labs /// @custom:contact [email protected] /// @notice Interface of SiloVault's factory. interface ISiloVaultsFactory { /// @notice Whether a SiloVault vault was created with the factory. function isSiloVault(address _target) external view returns (bool); /// @notice Creates a new SiloVault vault. /// @param _initialOwner The owner of the vault. /// @param _initialTimelock The initial timelock of the vault. /// @param _asset The address of the underlying asset. /// @param _name The name of the vault. /// @param _symbol The symbol of the vault. function createSiloVault( address _initialOwner, uint256 _initialTimelock, address _asset, string memory _name, string memory _symbol ) external returns (ISiloVault SiloVault); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.28; import {IERC4626} from "openzeppelin5/interfaces/IERC4626.sol"; import {PendingAddress} from "./PendingLib.sol"; import {ISiloVault} from "../interfaces/ISiloVault.sol"; import {FlowCapsConfig} from "../interfaces/IPublicAllocator.sol"; /// @title EventsLib /// @dev Forked with gratitude from Morpho Labs. /// @author Silo Labs /// @custom:contact [email protected] /// @notice Library exposing events. library EventsLib { /// @notice Emitted when a pending `newTimelock` is submitted. event SubmitTimelock(uint256 newTimelock); /// @notice Emitted when `timelock` is set to `newTimelock`. event SetTimelock(address indexed caller, uint256 newTimelock); /// @notice Emitted `fee` is set to `newFee`. event SetFee(address indexed caller, uint256 newFee); /// @notice Emitted when a new `newFeeRecipient` is set. event SetFeeRecipient(address indexed newFeeRecipient); /// @notice Emitted when a pending `newGuardian` is submitted. event SubmitGuardian(address indexed newGuardian); /// @notice Emitted when `guardian` is set to `newGuardian`. event SetGuardian(address indexed caller, address indexed guardian); /// @notice Emitted when a pending `cap` is submitted for `market`. event SubmitCap(address indexed caller, IERC4626 indexed market, uint256 cap); /// @notice Emitted when a new `cap` is set for `market`. event SetCap(address indexed caller, IERC4626 indexed market, uint256 cap); /// @notice Emitted when the market's last total assets is updated to `updatedTotalAssets`. event UpdateLastTotalAssets(uint256 updatedTotalAssets); /// @notice Emitted when the `market` is submitted for removal. event SubmitMarketRemoval(address indexed caller, IERC4626 indexed market); /// @notice Emitted when `curator` is set to `newCurator`. event SetCurator(address indexed newCurator); /// @notice Emitted when an `allocator` is set to `isAllocator`. event SetIsAllocator(address indexed allocator, bool isAllocator); /// @notice Emitted when a `pendingTimelock` is revoked. event RevokePendingTimelock(address indexed caller); /// @notice Emitted when a `pendingCap` for the `market` is revoked. event RevokePendingCap(address indexed caller, IERC4626 indexed market); /// @notice Emitted when a `pendingGuardian` is revoked. event RevokePendingGuardian(address indexed caller); /// @notice Emitted when a pending market removal is revoked. event RevokePendingMarketRemoval(address indexed caller, IERC4626 indexed market); /// @notice Emitted when the `supplyQueue` is set to `newSupplyQueue`. event SetSupplyQueue(address indexed caller, IERC4626[] newSupplyQueue); /// @notice Emitted when the `withdrawQueue` is set to `newWithdrawQueue`. event SetWithdrawQueue(address indexed caller, IERC4626[] newWithdrawQueue); /// @notice Emitted when a reallocation supplies assets to the `market`. /// @param market The market address. /// @param suppliedAssets The amount of assets supplied to the market. /// @param suppliedShares The amount of shares minted. event ReallocateSupply( address indexed caller, IERC4626 indexed market, uint256 suppliedAssets, uint256 suppliedShares ); /// @notice Emitted when a reallocation withdraws assets from the `market`. /// @param market The market address. /// @param withdrawnAssets The amount of assets withdrawn from the market. /// @param withdrawnShares The amount of shares burned. event ReallocateWithdraw( address indexed caller, IERC4626 indexed market, uint256 withdrawnAssets, uint256 withdrawnShares ); /// @notice Emitted when interest are accrued. /// @param newTotalAssets The assets of the market after accruing the interest but before the interaction. /// @param feeShares The shares minted to the fee recipient. event AccrueInterest(uint256 newTotalAssets, uint256 feeShares); /// @notice Emitted when a new SiloVault market is created. /// @param SiloVault The address of the SiloVault market. /// @param caller The caller of the function. /// @param initialOwner The initial owner of the SiloVault market. /// @param initialTimelock The initial timelock of the SiloVault market. /// @param asset The address of the underlying asset. /// @param name The name of the SiloVault market. /// @param symbol The symbol of the SiloVault market. event CreateSiloVault( address indexed SiloVault, address indexed caller, address initialOwner, uint256 initialTimelock, address indexed asset, string name, string symbol ); event CreateIdleVault(address indexed idleVault, address indexed vault); /// @notice Emitted during a public reallocation for each withdrawn-from market. event PublicWithdrawal( address indexed sender, ISiloVault indexed vault, IERC4626 indexed market, uint256 withdrawnAssets ); /// @notice Emitted at the end of a public reallocation. event PublicReallocateTo( address indexed sender, ISiloVault indexed vault, IERC4626 indexed supplyMarket, uint256 suppliedAssets ); /// @notice Emitted when the admin is set for a vault. event SetAdmin(address indexed sender, ISiloVault indexed vault, address admin); /// @notice Emitted when the fee is set for a vault. event SetFee(address indexed sender, ISiloVault indexed vault, uint256 fee); /// @notice Emitted when the fee is transfered for a vault. event TransferFee(address indexed sender, ISiloVault indexed vault, uint256 amount, address indexed feeRecipient); /// @notice Emitted when the flow caps are set for a vault. event SetFlowCaps(address indexed sender, ISiloVault indexed vault, FlowCapsConfig[] config); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.28; import {SafeCast} from "openzeppelin5/utils/math/SafeCast.sol"; import {ERC4626, Math} from "openzeppelin5/token/ERC20/extensions/ERC4626.sol"; import {IERC4626, IERC20, IERC20Metadata} from "openzeppelin5/interfaces/IERC4626.sol"; import {Ownable2Step, Ownable} from "openzeppelin5/access/Ownable2Step.sol"; import {ERC20Permit} from "openzeppelin5/token/ERC20/extensions/ERC20Permit.sol"; import {Multicall} from "openzeppelin5/utils/Multicall.sol"; import {ERC20} from "openzeppelin5/token/ERC20/ERC20.sol"; import {SafeERC20} from "openzeppelin5/token/ERC20/utils/SafeERC20.sol"; import {UtilsLib} from "morpho-blue/libraries/UtilsLib.sol"; import {TokenHelper} from "silo-core/contracts/lib/TokenHelper.sol"; import { MarketConfig, PendingUint192, PendingAddress, MarketAllocation, ISiloVaultBase, ISiloVaultStaticTyping } from "./interfaces/ISiloVault.sol"; import {INotificationReceiver} from "./interfaces/INotificationReceiver.sol"; import {IVaultIncentivesModule} from "./interfaces/IVaultIncentivesModule.sol"; import {IIncentivesClaimingLogic} from "./interfaces/IIncentivesClaimingLogic.sol"; import {PendingUint192, PendingAddress, PendingLib} from "./libraries/PendingLib.sol"; import {ConstantsLib} from "./libraries/ConstantsLib.sol"; import {ErrorsLib} from "./libraries/ErrorsLib.sol"; import {EventsLib} from "./libraries/EventsLib.sol"; import {SiloVaultActionsLib} from "./libraries/SiloVaultActionsLib.sol"; /// @title SiloVault /// @dev Forked with gratitude from Morpho Labs. /// @author Silo Labs /// @custom:contact [email protected] /// @notice ERC4626 compliant vault allowing users to deposit assets to any ERC4626 vault. contract SiloVault is ERC4626, ERC20Permit, Ownable2Step, Multicall, ISiloVaultStaticTyping { uint256 constant WAD = 1e18; using Math for uint256; using SafeERC20 for IERC20; using PendingLib for PendingUint192; using PendingLib for PendingAddress; /* IMMUTABLES */ /// @notice OpenZeppelin decimals offset used by the ERC4626 implementation. /// @dev Calculated to be max(0, 18 - underlyingDecimals) at construction, so the initial conversion rate maximizes /// precision between shares and assets. uint8 public immutable DECIMALS_OFFSET; IVaultIncentivesModule public immutable INCENTIVES_MODULE; /* STORAGE */ /// @inheritdoc ISiloVaultBase address public curator; /// @inheritdoc ISiloVaultBase mapping(address => bool) public isAllocator; /// @inheritdoc ISiloVaultBase address public guardian; /// @inheritdoc ISiloVaultStaticTyping mapping(IERC4626 => MarketConfig) public config; /// @inheritdoc ISiloVaultBase uint256 public timelock; /// @inheritdoc ISiloVaultStaticTyping PendingAddress public pendingGuardian; /// @inheritdoc ISiloVaultStaticTyping mapping(IERC4626 => PendingUint192) public pendingCap; /// @inheritdoc ISiloVaultStaticTyping PendingUint192 public pendingTimelock; /// @inheritdoc ISiloVaultBase uint96 public fee; /// @inheritdoc ISiloVaultBase address public feeRecipient; /// @inheritdoc ISiloVaultBase IERC4626[] public supplyQueue; /// @inheritdoc ISiloVaultBase IERC4626[] public withdrawQueue; /// @inheritdoc ISiloVaultBase uint256 public lastTotalAssets; bool transient _lock; /* CONSTRUCTOR */ /// @dev Initializes the contract. /// @param _owner The owner of the contract. /// @param _initialTimelock The initial timelock. /// @param _vaultIncentivesModule The vault incentives module. /// @param _asset The address of the underlying asset. /// @param _name The name of the vault. /// @param _symbol The symbol of the vault. constructor( address _owner, uint256 _initialTimelock, IVaultIncentivesModule _vaultIncentivesModule, address _asset, string memory _name, string memory _symbol ) ERC4626(IERC20(_asset)) ERC20Permit(_name) ERC20(_name, _symbol) Ownable(_owner) { require(_asset != address(0), ErrorsLib.ZeroAddress()); require(address(_vaultIncentivesModule) != address(0), ErrorsLib.ZeroAddress()); uint256 decimals = TokenHelper.assertAndGetDecimals(_asset); require(decimals <= 18, ErrorsLib.NotSupportedDecimals()); DECIMALS_OFFSET = uint8(UtilsLib.zeroFloorSub(18 + 3, decimals)); _checkTimelockBounds(_initialTimelock); _setTimelock(_initialTimelock); INCENTIVES_MODULE = _vaultIncentivesModule; } /* MODIFIERS */ /// @dev Reverts if the caller doesn't have the curator role. modifier onlyCuratorRole() { address sender = _msgSender(); if (sender != curator && sender != owner()) revert ErrorsLib.NotCuratorRole(); _; } /// @dev Reverts if the caller doesn't have the allocator role. modifier onlyAllocatorRole() { address sender = _msgSender(); if (!isAllocator[sender] && sender != curator && sender != owner()) { revert ErrorsLib.NotAllocatorRole(); } _; } /// @dev Reverts if the caller doesn't have the guardian role. modifier onlyGuardianRole() { if (_msgSender() != owner() && _msgSender() != guardian) revert ErrorsLib.NotGuardianRole(); _; } /// @dev Reverts if the caller doesn't have the curator nor the guardian role. modifier onlyCuratorOrGuardianRole() { if (_msgSender() != guardian && _msgSender() != curator && _msgSender() != owner()) { revert ErrorsLib.NotCuratorNorGuardianRole(); } _; } /// @dev Makes sure conditions are met to accept a pending value. /// @dev Reverts if: /// - there's no pending value; /// - the timelock has not elapsed since the pending value has been submitted. modifier afterTimelock(uint256 _validAt) { if (_validAt == 0) revert ErrorsLib.NoPendingValue(); if (block.timestamp < _validAt) revert ErrorsLib.TimelockNotElapsed(); _; } /* ONLY OWNER FUNCTIONS */ /// @inheritdoc ISiloVaultBase function setCurator(address _newCurator) external virtual onlyOwner { if (_newCurator == curator) revert ErrorsLib.AlreadySet(); curator = _newCurator; emit EventsLib.SetCurator(_newCurator); } /// @inheritdoc ISiloVaultBase function setIsAllocator(address _newAllocator, bool _newIsAllocator) external virtual onlyOwner { SiloVaultActionsLib.setIsAllocator(_newAllocator, _newIsAllocator, isAllocator); } /// @inheritdoc ISiloVaultBase function submitTimelock(uint256 _newTimelock) external virtual onlyOwner { if (_newTimelock == timelock) revert ErrorsLib.AlreadySet(); if (pendingTimelock.validAt != 0) revert ErrorsLib.AlreadyPending(); _checkTimelockBounds(_newTimelock); if (_newTimelock > timelock) { _setTimelock(_newTimelock); } else { // Safe "unchecked" cast because newTimelock <= MAX_TIMELOCK. pendingTimelock.update(uint184(_newTimelock), timelock); emit EventsLib.SubmitTimelock(_newTimelock); } } /// @inheritdoc ISiloVaultBase function setFee(uint256 _newFee) external virtual onlyOwner { if (_newFee == fee) revert ErrorsLib.AlreadySet(); if (_newFee > ConstantsLib.MAX_FEE) revert ErrorsLib.MaxFeeExceeded(); if (_newFee != 0 && feeRecipient == address(0)) revert ErrorsLib.ZeroFeeRecipient(); // Accrue fee using the previous fee set before changing it. _updateLastTotalAssets(_accrueFee()); // Safe "unchecked" cast because newFee <= MAX_FEE. fee = uint96(_newFee); emit EventsLib.SetFee(_msgSender(), fee); } /// @inheritdoc ISiloVaultBase function setFeeRecipient(address _newFeeRecipient) external virtual onlyOwner { if (_newFeeRecipient == feeRecipient) revert ErrorsLib.AlreadySet(); if (_newFeeRecipient == address(0) && fee != 0) revert ErrorsLib.ZeroFeeRecipient(); // Accrue fee to the previous fee recipient set before changing it. _updateLastTotalAssets(_accrueFee()); feeRecipient = _newFeeRecipient; emit EventsLib.SetFeeRecipient(_newFeeRecipient); } /// @inheritdoc ISiloVaultBase function submitGuardian(address _newGuardian) external virtual onlyOwner { if (_newGuardian == guardian) revert ErrorsLib.AlreadySet(); if (pendingGuardian.validAt != 0) revert ErrorsLib.AlreadyPending(); if (guardian == address(0)) { _setGuardian(_newGuardian); } else { pendingGuardian.update(_newGuardian, timelock); emit EventsLib.SubmitGuardian(_newGuardian); } } /* ONLY CURATOR FUNCTIONS */ /// @inheritdoc ISiloVaultBase function submitCap(IERC4626 _market, uint256 _newSupplyCap) external virtual onlyCuratorRole { if (_market.asset() != asset()) revert ErrorsLib.InconsistentAsset(_market); if (pendingCap[_market].validAt != 0) revert ErrorsLib.AlreadyPending(); if (config[_market].removableAt != 0) revert ErrorsLib.PendingRemoval(); uint256 supplyCap = config[_market].cap; if (_newSupplyCap == supplyCap) revert ErrorsLib.AlreadySet(); if (_newSupplyCap < supplyCap) { _setCap(_market, SafeCast.toUint184(_newSupplyCap)); } else { pendingCap[_market].update(SafeCast.toUint184(_newSupplyCap), timelock); emit EventsLib.SubmitCap(_msgSender(), _market, _newSupplyCap); } } /// @inheritdoc ISiloVaultBase function submitMarketRemoval(IERC4626 _market) external virtual onlyCuratorRole { if (config[_market].removableAt != 0) revert ErrorsLib.AlreadyPending(); if (config[_market].cap != 0) revert ErrorsLib.NonZeroCap(); if (!config[_market].enabled) revert ErrorsLib.MarketNotEnabled(_market); if (pendingCap[_market].validAt != 0) revert ErrorsLib.PendingCap(_market); // Safe "unchecked" cast because timelock <= MAX_TIMELOCK. config[_market].removableAt = uint64(block.timestamp + timelock); emit EventsLib.SubmitMarketRemoval(_msgSender(), _market); } /* ONLY ALLOCATOR FUNCTIONS */ /// @inheritdoc ISiloVaultBase function setSupplyQueue(IERC4626[] calldata _newSupplyQueue) external virtual onlyAllocatorRole { _nonReentrantOn(); uint256 length = _newSupplyQueue.length; if (length > ConstantsLib.MAX_QUEUE_LENGTH) revert ErrorsLib.MaxQueueLengthExceeded(); for (uint256 i; i < length; ++i) { IERC4626 market = _newSupplyQueue[i]; if (config[market].cap == 0) revert ErrorsLib.UnauthorizedMarket(market); } supplyQueue = _newSupplyQueue; emit EventsLib.SetSupplyQueue(_msgSender(), _newSupplyQueue); _nonReentrantOff(); } /// @inheritdoc ISiloVaultBase function updateWithdrawQueue(uint256[] calldata _indexes) external virtual onlyAllocatorRole { _nonReentrantOn(); uint256 newLength = _indexes.length; uint256 currLength = withdrawQueue.length; bool[] memory seen = new bool[](currLength); IERC4626[] memory newWithdrawQueue = new IERC4626[](newLength); for (uint256 i; i < newLength; ++i) { uint256 prevIndex = _indexes[i]; // If prevIndex >= currLength, it will revert with native "Index out of bounds". IERC4626 market = withdrawQueue[prevIndex]; if (seen[prevIndex]) revert ErrorsLib.DuplicateMarket(market); seen[prevIndex] = true; newWithdrawQueue[i] = market; } for (uint256 i; i < currLength; ++i) { if (!seen[i]) { IERC4626 market = withdrawQueue[i]; if (config[market].cap != 0) revert ErrorsLib.InvalidMarketRemovalNonZeroCap(market); if (pendingCap[market].validAt != 0) revert ErrorsLib.PendingCap(market); if (_ERC20BalanceOf(address(market), address(this)) != 0) { if (config[market].removableAt == 0) revert ErrorsLib.InvalidMarketRemovalNonZeroSupply(market); if (block.timestamp < config[market].removableAt) { revert ErrorsLib.InvalidMarketRemovalTimelockNotElapsed(market); } } delete config[market]; } } withdrawQueue = newWithdrawQueue; emit EventsLib.SetWithdrawQueue(_msgSender(), newWithdrawQueue); _nonReentrantOff(); } /// @inheritdoc ISiloVaultBase function reallocate(MarketAllocation[] calldata _allocations) external virtual onlyAllocatorRole { _nonReentrantOn(); uint256 totalSupplied; uint256 totalWithdrawn; for (uint256 i; i < _allocations.length; ++i) { MarketAllocation memory allocation = _allocations[i]; // in original SiloVault, we are not checking liquidity, so this reallocation will fail if not enough assets (uint256 supplyAssets, uint256 supplyShares) = _supplyBalance(allocation.market); uint256 withdrawn = UtilsLib.zeroFloorSub(supplyAssets, allocation.assets); if (withdrawn > 0) { if (!config[allocation.market].enabled) revert ErrorsLib.MarketNotEnabled(allocation.market); // Guarantees that unknown frontrunning donations can be withdrawn, in order to disable a market. uint256 shares; if (allocation.assets == 0) { shares = supplyShares; withdrawn = 0; } uint256 withdrawnAssets; uint256 withdrawnShares; if (shares != 0) { withdrawnAssets = allocation.market.redeem(shares, address(this), address(this)); withdrawnShares = shares; } else { withdrawnAssets = withdrawn; withdrawnShares = allocation.market.withdraw(withdrawn, address(this), address(this)); } emit EventsLib.ReallocateWithdraw(_msgSender(), allocation.market, withdrawnAssets, withdrawnShares); totalWithdrawn += withdrawnAssets; } else { uint256 suppliedAssets = allocation.assets == type(uint256).max ? UtilsLib.zeroFloorSub(totalWithdrawn, totalSupplied) : UtilsLib.zeroFloorSub(allocation.assets, supplyAssets); if (suppliedAssets == 0) continue; uint256 supplyCap = config[allocation.market].cap; if (supplyCap == 0) revert ErrorsLib.UnauthorizedMarket(allocation.market); if (supplyAssets + suppliedAssets > supplyCap) revert ErrorsLib.SupplyCapExceeded(allocation.market); // The market's loan asset is guaranteed to be the vault's asset because it has a non-zero supply cap. uint256 suppliedShares = allocation.market.deposit(suppliedAssets, address(this)); emit EventsLib.ReallocateSupply(_msgSender(), allocation.market, suppliedAssets, suppliedShares); totalSupplied += suppliedAssets; } } if (totalWithdrawn != totalSupplied) revert ErrorsLib.InconsistentReallocation(); _nonReentrantOff(); } /* REVOKE FUNCTIONS */ /// @inheritdoc ISiloVaultBase function revokePendingTimelock() external virtual onlyGuardianRole { delete pendingTimelock; emit EventsLib.RevokePendingTimelock(_msgSender()); } /// @inheritdoc ISiloVaultBase function revokePendingGuardian() external virtual onlyGuardianRole { delete pendingGuardian; emit EventsLib.RevokePendingGuardian(_msgSender()); } /// @inheritdoc ISiloVaultBase function revokePendingCap(IERC4626 _market) external virtual onlyCuratorOrGuardianRole { delete pendingCap[_market]; emit EventsLib.RevokePendingCap(_msgSender(), _market); } /// @inheritdoc ISiloVaultBase function revokePendingMarketRemoval(IERC4626 _market) external virtual onlyCuratorOrGuardianRole { delete config[_market].removableAt; emit EventsLib.RevokePendingMarketRemoval(_msgSender(), _market); } /* EXTERNAL */ /// @inheritdoc ISiloVaultBase function supplyQueueLength() external view virtual returns (uint256) { return supplyQueue.length; } /// @inheritdoc ISiloVaultBase function withdrawQueueLength() external view virtual returns (uint256) { return withdrawQueue.length; } /// @inheritdoc ISiloVaultBase function acceptTimelock() external virtual afterTimelock(pendingTimelock.validAt) { _setTimelock(pendingTimelock.value); } /// @inheritdoc ISiloVaultBase function acceptGuardian() external virtual afterTimelock(pendingGuardian.validAt) { _setGuardian(pendingGuardian.value); } /// @inheritdoc ISiloVaultBase function acceptCap(IERC4626 _market) external virtual afterTimelock(pendingCap[_market].validAt) { _nonReentrantOn(); // Safe "unchecked" cast because pendingCap <= type(uint184).max. _setCap(_market, uint184(pendingCap[_market].value)); _nonReentrantOff(); } /// @inheritdoc ISiloVaultBase function claimRewards() public virtual { _nonReentrantOn(); _updateLastTotalAssets(_accrueFee()); _claimRewards(); _nonReentrantOff(); } /// @inheritdoc ISiloVaultBase function reentrancyGuardEntered() external view virtual returns (bool entered) { entered = _lock; } /* ERC4626 (PUBLIC) */ /// @inheritdoc IERC20Metadata function decimals() public view virtual override(ERC20, ERC4626) returns (uint8) { return 18; } /// @inheritdoc IERC4626 /// @dev Warning: May be higher than the actual max deposit due to duplicate markets in the supplyQueue. function maxDeposit(address) public view virtual override returns (uint256) { return _maxDeposit(); } /// @inheritdoc IERC4626 /// @dev Warning: May be higher than the actual max mint due to duplicate markets in the supplyQueue. function maxMint(address) public view virtual override returns (uint256) { uint256 suppliable = _maxDeposit(); return _convertToShares(suppliable, Math.Rounding.Floor); } /// @inheritdoc IERC4626 /// @dev Warning: May be lower than the actual amount of assets that can be withdrawn by `owner` due to conversion /// roundings between shares and assets. function maxWithdraw(address _owner) public view virtual override returns (uint256 assets) { (assets,,) = _maxWithdraw(_owner); } /// @inheritdoc IERC4626 /// @dev Warning: May be lower than the actual amount of shares that can be redeemed by `owner` due to conversion /// roundings between shares and assets. function maxRedeem(address _owner) public view virtual override returns (uint256) { (uint256 assets, uint256 newTotalSupply, uint256 newTotalAssets) = _maxWithdraw(_owner); return _convertToSharesWithTotals(assets, newTotalSupply, newTotalAssets, Math.Rounding.Floor); } /// @inheritdoc IERC20 function transfer(address _to, uint256 _value) public virtual override(ERC20, IERC20) returns (bool success) { _nonReentrantOn(); success = ERC20.transfer(_to, _value); _nonReentrantOff(); } /// @inheritdoc IERC20 function transferFrom(address _from, address _to, uint256 _value) public virtual override(ERC20, IERC20) returns (bool success) { _nonReentrantOn(); success = ERC20.transferFrom(_from, _to, _value); _nonReentrantOff(); } /// @inheritdoc IERC4626 function deposit(uint256 _assets, address _receiver) public virtual override returns (uint256 shares) { _nonReentrantOn(); uint256 newTotalAssets = _accrueFee(); // Update `lastTotalAssets` to avoid an inconsistent state in a re-entrant context. // It is updated again in `_deposit`. lastTotalAssets = newTotalAssets; shares = _convertToSharesWithTotalsSafe(_assets, totalSupply(), newTotalAssets, Math.Rounding.Floor); _deposit(_msgSender(), _receiver, _assets, shares); _assetLossCheck(shares, _assets); _nonReentrantOff(); } /// @inheritdoc IERC4626 function mint(uint256 _shares, address _receiver) public virtual override returns (uint256 assets) { _nonReentrantOn(); uint256 newTotalAssets = _accrueFee(); // Update `lastTotalAssets` to avoid an inconsistent state in a re-entrant context. // It is updated again in `_deposit`. lastTotalAssets = newTotalAssets; assets = _convertToAssetsWithTotalsSafe(_shares, totalSupply(), newTotalAssets, Math.Rounding.Ceil); _deposit(_msgSender(), _receiver, assets, _shares); _assetLossCheck(_shares, assets); _nonReentrantOff(); } /// @inheritdoc IERC4626 function withdraw(uint256 _assets, address _receiver, address _owner) public virtual override returns (uint256 shares) { _nonReentrantOn(); uint256 newTotalAssets = _accrueFee(); // Do not call expensive `maxWithdraw` and optimistically withdraw assets. shares = _convertToSharesWithTotalsSafe(_assets, totalSupply(), newTotalAssets, Math.Rounding.Ceil); // `newTotalAssets - assets` may be a little off from `totalAssets()`. _updateLastTotalAssets(UtilsLib.zeroFloorSub(newTotalAssets, _assets)); _withdraw(_msgSender(), _receiver, _owner, _assets, shares); _nonReentrantOff(); } /// @inheritdoc IERC4626 function redeem( uint256 _shares, address _receiver, address _owner ) public virtual override returns (uint256 assets) { _nonReentrantOn(); uint256 newTotalAssets = _accrueFee(); // Do not call expensive `maxRedeem` and optimistically redeem shares. assets = _convertToAssetsWithTotalsSafe(_shares, totalSupply(), newTotalAssets, Math.Rounding.Floor); // `newTotalAssets - assets` may be a little off from `totalAssets()`. _updateLastTotalAssets(UtilsLib.zeroFloorSub(newTotalAssets, assets)); _withdraw(_msgSender(), _receiver, _owner, assets, _shares); _nonReentrantOff(); } /// @inheritdoc IERC4626 function totalAssets() public view virtual override returns (uint256 assets) { for (uint256 i; i < withdrawQueue.length; ++i) { IERC4626 market = withdrawQueue[i]; assets += _expectedSupplyAssets(market, address(this)); } } /* ERC4626 (INTERNAL) */ /// @inheritdoc ERC4626 function _decimalsOffset() internal view virtual override returns (uint8) { return DECIMALS_OFFSET; } /// @dev Returns the maximum amount of asset (`assets`) that the `owner` can withdraw from the vault, as well as the /// new vault's total supply (`newTotalSupply`) and total assets (`newTotalAssets`). function _maxWithdraw(address _owner) internal view virtual returns (uint256 assets, uint256 newTotalSupply, uint256 newTotalAssets) { uint256 feeShares; (feeShares, newTotalAssets) = _accruedFeeShares(); newTotalSupply = totalSupply() + feeShares; assets = _convertToAssetsWithTotals(balanceOf(_owner), newTotalSupply, newTotalAssets, Math.Rounding.Floor); assets -= SiloVaultActionsLib.simulateWithdrawERC4626(assets, withdrawQueue); } /// @dev Returns the maximum amount of assets that the vault can supply to ERC4626 vaults. function _maxDeposit() internal view virtual returns (uint256 totalSuppliable) { for (uint256 i; i < supplyQueue.length; ++i) { IERC4626 market = supplyQueue[i]; uint256 supplyCap = config[market].cap; if (supplyCap == 0) continue; (uint256 assets,) = _supplyBalance(market); uint256 depositMax = market.maxDeposit(address(this)); totalSuppliable += Math.min(depositMax, UtilsLib.zeroFloorSub(supplyCap, assets)); } } /// @inheritdoc ERC4626 /// @dev The accrual of performance fees is taken into account in the conversion. function _convertToShares(uint256 _assets, Math.Rounding _rounding) internal view virtual override returns (uint256) { (uint256 feeShares, uint256 newTotalAssets) = _accruedFeeShares(); return _convertToSharesWithTotals(_assets, totalSupply() + feeShares, newTotalAssets, _rounding); } /// @inheritdoc ERC4626 /// @dev The accrual of performance fees is taken into account in the conversion. function _convertToAssets(uint256 _shares, Math.Rounding _rounding) internal view virtual override returns (uint256) { (uint256 feeShares, uint256 newTotalAssets) = _accruedFeeShares(); return _convertToAssetsWithTotals(_shares, totalSupply() + feeShares, newTotalAssets, _rounding); } /// @dev Returns the amount of shares that the vault would exchange for the amount of `assets` provided. /// @dev It assumes that the arguments `newTotalSupply` and `newTotalAssets` are up to date. function _convertToSharesWithTotals( uint256 _assets, uint256 _newTotalSupply, uint256 _newTotalAssets, Math.Rounding _rounding ) internal view virtual returns (uint256) { return _assets.mulDiv(_newTotalSupply + 10 ** _decimalsOffset(), _newTotalAssets + 1, _rounding); } /// @dev Returns the amount of shares that the vault would exchange for the amount of `assets` provided. /// @dev It assumes that the arguments `newTotalSupply` and `newTotalAssets` are up to date. /// @dev Reverts if the result is zero. function _convertToSharesWithTotalsSafe( uint256 _assets, uint256 _newTotalSupply, uint256 _newTotalAssets, Math.Rounding _rounding ) internal view virtual returns (uint256 shares) { shares = _convertToSharesWithTotals(_assets, _newTotalSupply, _newTotalAssets, _rounding); require(shares != 0, ErrorsLib.ZeroShares()); } /// @dev Returns the amount of assets that the vault would exchange for the amount of `shares` provided. /// @dev It assumes that the arguments `newTotalSupply` and `newTotalAssets` are up to date. function _convertToAssetsWithTotals( uint256 _shares, uint256 _newTotalSupply, uint256 _newTotalAssets, Math.Rounding _rounding ) internal view virtual returns (uint256) { return _shares.mulDiv(_newTotalAssets + 1, _newTotalSupply + 10 ** _decimalsOffset(), _rounding); } /// @dev Returns the amount of assets that the vault would exchange for the amount of `shares` provided. /// @dev It assumes that the arguments `newTotalSupply` and `newTotalAssets` are up to date. /// @dev Reverts if the result is zero. function _convertToAssetsWithTotalsSafe( uint256 _shares, uint256 _newTotalSupply, uint256 _newTotalAssets, Math.Rounding _rounding ) internal view virtual returns (uint256 assets) { assets = _convertToAssetsWithTotals(_shares, _newTotalSupply, _newTotalAssets, _rounding); require(assets != 0, ErrorsLib.ZeroAssets()); } /// @inheritdoc ERC4626 /// @dev Used in mint or deposit to deposit the underlying asset to ERC4626 vaults. function _deposit(address _caller, address _receiver, uint256 _assets, uint256 _shares) internal virtual override { if (_shares == 0) revert ErrorsLib.InputZeroShares(); super._deposit(_caller, _receiver, _assets, _shares); _supplyERC4626(_assets); // `lastTotalAssets + assets` may be a little off from `totalAssets()`. _updateLastTotalAssets(lastTotalAssets + _assets); } /// @inheritdoc ERC4626 /// @dev Used in redeem or withdraw to withdraw the underlying asset from ERC4626 markets. /// @dev Depending on 3 cases, reverts when withdrawing "too much" with: /// 1. NotEnoughLiquidity when withdrawing more than available liquidity. /// 2. ERC20InsufficientAllowance when withdrawing more than `caller`'s allowance. /// 3. ERC20InsufficientBalance when withdrawing more than `owner`'s balance. function _withdraw(address _caller, address _receiver, address _owner, uint256 _assets, uint256 _shares) internal virtual override { _withdrawERC4626(_assets); super._withdraw(_caller, _receiver, _owner, _assets, _shares); } /* INTERNAL */ /// @dev Returns the vault's assets & corresponding shares supplied on the /// market defined by `market`, as well as the market's state. function _supplyBalance(IERC4626 _market) internal view virtual returns (uint256 assets, uint256 shares) { shares = _ERC20BalanceOf(address(_market), address(this)); // we assume here, that in case of any interest on IERC4626, convertToAssets returns assets with interest assets = _previewRedeem(_market, shares); } /// @dev Reverts if `newTimelock` is not within the bounds. function _checkTimelockBounds(uint256 _newTimelock) internal pure virtual { if (_newTimelock > ConstantsLib.MAX_TIMELOCK) revert ErrorsLib.AboveMaxTimelock(); if (_newTimelock < ConstantsLib.MIN_TIMELOCK) revert ErrorsLib.BelowMinTimelock(); } /// @dev Sets `timelock` to `newTimelock`. function _setTimelock(uint256 _newTimelock) internal virtual { timelock = _newTimelock; emit EventsLib.SetTimelock(_msgSender(), _newTimelock); delete pendingTimelock; } /// @dev Sets `guardian` to `newGuardian`. function _setGuardian(address _newGuardian) internal virtual { guardian = _newGuardian; emit EventsLib.SetGuardian(_msgSender(), _newGuardian); delete pendingGuardian; } /// @dev Sets the cap of the market. function _setCap(IERC4626 _market, uint184 _supplyCap) internal virtual { MarketConfig storage marketConfig = config[_market]; uint256 approveValue; if (_supplyCap > 0) { if (!marketConfig.enabled) { withdrawQueue.push(_market); if (withdrawQueue.length > ConstantsLib.MAX_QUEUE_LENGTH) revert ErrorsLib.MaxQueueLengthExceeded(); marketConfig.enabled = true; // Take into account assets of the new market without applying a fee. _updateLastTotalAssets(lastTotalAssets + _expectedSupplyAssets(_market, address(this))); emit EventsLib.SetWithdrawQueue(msg.sender, withdrawQueue); } marketConfig.removableAt = 0; // one time approval, so market can pull any amount of tokens from SiloVault in a future approveValue = type(uint256).max; } marketConfig.cap = _supplyCap; IERC20(asset()).forceApprove(address(_market), approveValue); emit EventsLib.SetCap(_msgSender(), _market, _supplyCap); delete pendingCap[_market]; } /* LIQUIDITY ALLOCATION */ /// @dev Supplies `assets` to ERC4626 vaults. function _supplyERC4626(uint256 _assets) internal virtual { for (uint256 i; i < supplyQueue.length; ++i) { IERC4626 market = supplyQueue[i]; uint256 supplyCap = config[market].cap; if (supplyCap == 0) continue; // `supplyAssets` needs to be rounded up for `toSupply` to be rounded down. (uint256 supplyAssets,) = _supplyBalance(market); uint256 toSupply = UtilsLib.min(UtilsLib.zeroFloorSub(supplyCap, supplyAssets), _assets); if (toSupply > 0) { // Using try/catch to skip markets that revert. try market.deposit(toSupply, address(this)) { _assets -= toSupply; } catch { } } if (_assets == 0) return; } if (_assets != 0) revert ErrorsLib.AllCapsReached(); } /// @dev Withdraws `assets` from ERC4626 vaults. function _withdrawERC4626(uint256 _assets) internal virtual { for (uint256 i; i < withdrawQueue.length; ++i) { IERC4626 market = withdrawQueue[i]; // original implementation were using `_accruedSupplyBalance` which does not care about liquidity // now, liquidity is considered by using `maxWithdraw` uint256 toWithdraw = UtilsLib.min(market.maxWithdraw(address(this)), _assets); if (toWithdraw > 0) { // Using try/catch to skip markets that revert. try market.withdraw(toWithdraw, address(this), address(this)) { _assets -= toWithdraw; } catch { } } if (_assets == 0) return; } if (_assets != 0) revert ErrorsLib.NotEnoughLiquidity(); } /* FEE MANAGEMENT */ /// @dev Updates `lastTotalAssets` to `updatedTotalAssets`. function _updateLastTotalAssets(uint256 _updatedTotalAssets) internal virtual { lastTotalAssets = _updatedTotalAssets; emit EventsLib.UpdateLastTotalAssets(_updatedTotalAssets); } /// @dev Accrues the fee and mints the fee shares to the fee recipient. /// @return newTotalAssets The vaults total assets after accruing the interest. function _accrueFee() internal virtual returns (uint256 newTotalAssets) { uint256 feeShares; (feeShares, newTotalAssets) = _accruedFeeShares(); if (feeShares != 0) _mint(feeRecipient, feeShares); emit EventsLib.AccrueInterest(newTotalAssets, feeShares); } /// @dev Computes and returns the fee shares (`feeShares`) to mint and the new vault's total assets /// (`newTotalAssets`). function _accruedFeeShares() internal view virtual returns (uint256 feeShares, uint256 newTotalAssets) { newTotalAssets = totalAssets(); uint256 totalInterest = UtilsLib.zeroFloorSub(newTotalAssets, lastTotalAssets); if (totalInterest != 0 && fee != 0) { // It is acknowledged that `feeAssets` may be rounded down to 0 if `totalInterest * fee < WAD`. uint256 feeAssets = totalInterest.mulDiv(fee, WAD); // The fee assets is subtracted from the total assets in this calculation to compensate for the fact // that total assets is already increased by the total interest (including the fee assets). feeShares = _convertToSharesWithTotals(feeAssets, totalSupply(), newTotalAssets - feeAssets, Math.Rounding.Floor); } } /// @notice Returns the expected supply assets balance of `user` on a market after having accrued interest. function _expectedSupplyAssets(IERC4626 _market, address _user) internal view virtual returns (uint256 assets) { assets = _previewRedeem(_market, _ERC20BalanceOf(address(_market), _user)); } function _update(address _from, address _to, uint256 _value) internal virtual override { // on deposit, claim must be first action, new user should not get reward // on withdraw, claim must be first action, user that is leaving should get rewards // immediate deposit-withdraw operation will not abused it, because before deposit all rewards will be // claimed, so on withdraw on the same block no additional rewards will be generated. // transfer shares is basically withdraw->deposit, so claiming rewards should be done before any state changes _claimRewards(); super._update(_from, _to, _value); if (_value == 0) return; _afterTokenTransfer(_from, _to, _value); } function _afterTokenTransfer(address _from, address _to, uint256 _value) internal virtual { address[] memory receivers = INCENTIVES_MODULE.getNotificationReceivers(); uint256 total = totalSupply(); uint256 senderBalance = _from == address(0) ? 0 : balanceOf(_from); uint256 recipientBalance = _to == address(0) ? 0 : balanceOf(_to); for(uint256 i; i < receivers.length; i++) { INotificationReceiver(receivers[i]).afterTokenTransfer({ _sender: _from, _senderBalance: senderBalance, _recipient: _to, _recipientBalance: recipientBalance, _totalSupply: total, _amount: _value }); } } function _claimRewards() internal virtual { address[] memory logics = INCENTIVES_MODULE.getAllIncentivesClaimingLogics(); bytes memory data = abi.encodeWithSelector(IIncentivesClaimingLogic.claimRewardsAndDistribute.selector); for (uint256 i; i < logics.length; i++) { (bool success,) = logics[i].delegatecall(data); if (!success) revert ErrorsLib.ClaimRewardsFailed(); } } function _nonReentrantOn() internal { require(!_lock, ErrorsLib.ReentrancyError()); _lock = true; } function _nonReentrantOff() internal { _lock = false; } /// @dev to save code size ~500 B function _ERC20BalanceOf(address _token, address _account) internal view returns (uint256 balance) { balance = IERC20(_token).balanceOf(_account); } function _previewRedeem(IERC4626 _market, uint256 _shares) internal view returns (uint256 assets) { assets = _market.previewRedeem(_shares); } function _assetLossCheck(uint256 _shares, uint256 _expectedAssets) internal { uint256 preview = previewRedeem(_shares); if (preview >= _expectedAssets) return; uint256 loss; // save because we checking above `if (preview >= _expectedAssets)` unchecked { loss = _expectedAssets - preview; } uint256 arbitraryLossThreshold = 10; require(loss < arbitraryLossThreshold, ErrorsLib.AssetLoss(loss)); } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.28; import { Ownable2StepUpgradeable, OwnableUpgradeable } from "openzeppelin5-upgradeable/access/Ownable2StepUpgradeable.sol"; import {EnumerableSet} from "openzeppelin5/utils/structs/EnumerableSet.sol"; import {IERC4626} from "openzeppelin5/interfaces/IERC4626.sol"; import {IVaultIncentivesModule} from "../interfaces/IVaultIncentivesModule.sol"; import {IIncentivesClaimingLogic} from "../interfaces/IIncentivesClaimingLogic.sol"; import {INotificationReceiver} from "../interfaces/INotificationReceiver.sol"; import {ErrorsLib} from "../libraries/ErrorsLib.sol"; import {ISiloVault} from "silo-vaults/contracts/interfaces/ISiloVault.sol"; /// @title Vault Incentives Module contract VaultIncentivesModule is IVaultIncentivesModule, Ownable2StepUpgradeable { using EnumerableSet for EnumerableSet.AddressSet; ISiloVault public vault; EnumerableSet.AddressSet internal _markets; EnumerableSet.AddressSet internal _notificationReceivers; mapping( IERC4626 market => mapping(IIncentivesClaimingLogic logic => uint256 validAt) ) public pendingClaimingLogics; mapping(IERC4626 market => EnumerableSet.AddressSet incentivesClaimingLogics) internal _claimingLogics; constructor() { _disableInitializers(); } /// @dev Reverts if the caller doesn't have the guardian role. modifier onlyGuardianRole() { address guardian = vault.guardian(); if (_msgSender() != owner() && _msgSender() != guardian) revert ErrorsLib.NotGuardianRole(); _; } function __VaultIncentivesModule_init(address _owner, ISiloVault _vault) external virtual initializer { __Ownable_init(_owner); require(address(_vault) != address(0), AddressZero()); vault = _vault; } /// @inheritdoc IVaultIncentivesModule function submitIncentivesClaimingLogic( IERC4626 _market, IIncentivesClaimingLogic _logic ) external virtual onlyGuardianRole { require(address(_logic) != address(0), AddressZero()); require(!_claimingLogics[_market].contains(address(_logic)), LogicAlreadyAdded()); require(pendingClaimingLogics[_market][_logic] == 0, LogicAlreadyPending()); uint256 timelock = vault.timelock(); unchecked { pendingClaimingLogics[_market][_logic] = block.timestamp + timelock; } emit SubmitIncentivesClaimingLogic(_market, _logic); } /// @inheritdoc IVaultIncentivesModule function acceptIncentivesClaimingLogic( IERC4626 _market, IIncentivesClaimingLogic _logic ) external virtual { uint256 validAt = pendingClaimingLogics[_market][_logic]; require(validAt != 0 && validAt < block.timestamp, CantAcceptLogic()); if (_claimingLogics[_market].length() == 0) { _markets.add(address(_market)); } _claimingLogics[_market].add(address(_logic)); delete pendingClaimingLogics[_market][_logic]; emit IncentivesClaimingLogicAdded(_market, _logic); } /// @inheritdoc IVaultIncentivesModule function removeIncentivesClaimingLogic(IERC4626 _market, IIncentivesClaimingLogic _logic) external virtual onlyGuardianRole { require(_claimingLogics[_market].contains(address(_logic)), LogicNotFound()); _claimingLogics[_market].remove(address(_logic)); if (_claimingLogics[_market].length() == 0) { _markets.remove(address(_market)); } emit IncentivesClaimingLogicRemoved(_market, _logic); } /// @inheritdoc IVaultIncentivesModule function revokePendingClaimingLogic(IERC4626 _market, IIncentivesClaimingLogic _logic) external virtual onlyGuardianRole { delete pendingClaimingLogics[_market][_logic]; emit RevokePendingClaimingLogic(_market, _logic); } /// @inheritdoc IVaultIncentivesModule function addNotificationReceiver(INotificationReceiver _notificationReceiver) external virtual onlyOwner { require(address(_notificationReceiver) != address(0), AddressZero()); require(_notificationReceivers.add(address(_notificationReceiver)), NotificationReceiverAlreadyAdded()); emit NotificationReceiverAdded(address(_notificationReceiver)); } /// @inheritdoc IVaultIncentivesModule function removeNotificationReceiver( INotificationReceiver _notificationReceiver, bool _allProgramsStopped ) external virtual onlyOwner { // sanity check and reminder for anyone who is removing a notification receiver. require(_allProgramsStopped, AllProgramsNotStopped()); require(_notificationReceivers.remove(address(_notificationReceiver)), NotificationReceiverNotFound()); emit NotificationReceiverRemoved(address(_notificationReceiver)); } /// @inheritdoc IVaultIncentivesModule function getAllIncentivesClaimingLogics() external view virtual returns (address[] memory logics) { address[] memory markets = _markets.values(); logics = _getAllIncentivesClaimingLogics(markets); } /// @inheritdoc IVaultIncentivesModule function getMarketsIncentivesClaimingLogics(address[] calldata _marketsInput) external view virtual returns (address[] memory logics) { logics = _getAllIncentivesClaimingLogics(_marketsInput); } /// @inheritdoc IVaultIncentivesModule function getNotificationReceivers() external view virtual returns (address[] memory receivers) { receivers = _notificationReceivers.values(); } /// @inheritdoc IVaultIncentivesModule function getConfiguredMarkets() external view virtual returns (address[] memory markets) { markets = _markets.values(); } /// @inheritdoc IVaultIncentivesModule function getMarketIncentivesClaimingLogics(IERC4626 market) external view virtual returns (address[] memory logics) { logics = _claimingLogics[market].values(); } /// @dev Internal function to get the incentives claiming logics for a given market. /// @param _marketsInput The markets to get the incentives claiming logics for. /// @return logics The incentives claiming logics. function _getAllIncentivesClaimingLogics(address[] memory _marketsInput) internal view virtual returns (address[] memory logics) { uint256 totalLogics; for (uint256 i = 0; i < _marketsInput.length; i++) { unchecked { // safe to uncheck as we will never have more than 2^256 logics totalLogics += _claimingLogics[IERC4626(_marketsInput[i])].length(); } } logics = new address[](totalLogics); uint256 index; for (uint256 i = 0; i < _marketsInput.length; i++) { address[] memory marketLogics = _claimingLogics[IERC4626(_marketsInput[i])].values(); for (uint256 j = 0; j < marketLogics.length; j++) { unchecked { // safe to uncheck as we will never have more than 2^256 logics logics[index++] = marketLogics[j]; } } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; /** * @dev Collection of common custom errors used in multiple contracts * * IMPORTANT: Backwards compatibility is not guaranteed in future versions of the library. * It is recommended to avoid relying on the error API for critical functionality. */ library Errors { /** * @dev The ETH balance of the account is not enough to perform the operation. */ error InsufficientBalance(uint256 balance, uint256 needed); /** * @dev A call to an address target failed. The target may have reverted. */ error FailedCall(); /** * @dev The deployment failed. */ error FailedDeployment(); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/ERC20Permit.sol) pragma solidity ^0.8.20; import {IERC20Permit} from "./IERC20Permit.sol"; import {ERC20} from "../ERC20.sol"; import {ECDSA} from "../../../utils/cryptography/ECDSA.sol"; import {EIP712} from "../../../utils/cryptography/EIP712.sol"; import {Nonces} from "../../../utils/Nonces.sol"; /** * @dev Implementation of the ERC-20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[ERC-2612]. * * Adds the {permit} method, which can be used to change an account's ERC-20 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. */ abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712, Nonces { bytes32 private constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); /** * @dev Permit deadline has expired. */ error ERC2612ExpiredSignature(uint256 deadline); /** * @dev Mismatched signature. */ error ERC2612InvalidSigner(address signer, address owner); /** * @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 ERC-20 token name. */ constructor(string memory name) EIP712(name, "1") {} /** * @inheritdoc IERC20Permit */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public virtual { if (block.timestamp > deadline) { revert ERC2612ExpiredSignature(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); if (signer != owner) { revert ERC2612InvalidSigner(signer, owner); } _approve(owner, spender, value); } /** * @inheritdoc IERC20Permit */ function nonces(address owner) public view virtual override(IERC20Permit, Nonces) returns (uint256) { return super.nonces(owner); } /** * @inheritdoc IERC20Permit */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view virtual returns (bytes32) { return _domainSeparatorV4(); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC4626.sol) pragma solidity ^0.8.20; import {IERC20} from "../token/ERC20/IERC20.sol"; import {IERC20Metadata} from "../token/ERC20/extensions/IERC20Metadata.sol"; /** * @dev Interface of the ERC-4626 "Tokenized Vault Standard", as defined in * https://eips.ethereum.org/EIPS/eip-4626[ERC-4626]. */ interface IERC4626 is IERC20, IERC20Metadata { event Deposit(address indexed sender, address indexed owner, uint256 assets, uint256 shares); event Withdraw( address indexed sender, address indexed receiver, address indexed owner, uint256 assets, uint256 shares ); /** * @dev Returns the address of the underlying token used for the Vault for accounting, depositing, and withdrawing. * * - MUST be an ERC-20 token contract. * - MUST NOT revert. */ function asset() external view returns (address assetTokenAddress); /** * @dev Returns the total amount of the underlying asset that is “managed” by Vault. * * - SHOULD include any compounding that occurs from yield. * - MUST be inclusive of any fees that are charged against assets in the Vault. * - MUST NOT revert. */ function totalAssets() external view returns (uint256 totalManagedAssets); /** * @dev Returns the amount of shares that the Vault would exchange for the amount of assets provided, in an ideal * scenario where all the conditions are met. * * - MUST NOT be inclusive of any fees that are charged against assets in the Vault. * - MUST NOT show any variations depending on the caller. * - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange. * - MUST NOT revert. * * NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the * “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and * from. */ function convertToShares(uint256 assets) external view returns (uint256 shares); /** * @dev Returns the amount of assets that the Vault would exchange for the amount of shares provided, in an ideal * scenario where all the conditions are met. * * - MUST NOT be inclusive of any fees that are charged against assets in the Vault. * - MUST NOT show any variations depending on the caller. * - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange. * - MUST NOT revert. * * NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the * “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and * from. */ function convertToAssets(uint256 shares) external view returns (uint256 assets); /** * @dev Returns the maximum amount of the underlying asset that can be deposited into the Vault for the receiver, * through a deposit call. * * - MUST return a limited value if receiver is subject to some deposit limit. * - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of assets that may be deposited. * - MUST NOT revert. */ function maxDeposit(address receiver) external view returns (uint256 maxAssets); /** * @dev Allows an on-chain or off-chain user to simulate the effects of their deposit at the current block, given * current on-chain conditions. * * - MUST return as close to and no more than the exact amount of Vault shares that would be minted in a deposit * call in the same transaction. I.e. deposit should return the same or more shares as previewDeposit if called * in the same transaction. * - MUST NOT account for deposit limits like those returned from maxDeposit and should always act as though the * deposit would be accepted, regardless if the user has enough tokens approved, etc. * - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees. * - MUST NOT revert. * * NOTE: any unfavorable discrepancy between convertToShares and previewDeposit SHOULD be considered slippage in * share price or some other type of condition, meaning the depositor will lose assets by depositing. */ function previewDeposit(uint256 assets) external view returns (uint256 shares); /** * @dev Mints shares Vault shares to receiver by depositing exactly amount of underlying tokens. * * - MUST emit the Deposit event. * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the * deposit execution, and are accounted for during deposit. * - MUST revert if all of assets cannot be deposited (due to deposit limit being reached, slippage, the user not * approving enough underlying tokens to the Vault contract, etc). * * NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token. */ function deposit(uint256 assets, address receiver) external returns (uint256 shares); /** * @dev Returns the maximum amount of the Vault shares that can be minted for the receiver, through a mint call. * - MUST return a limited value if receiver is subject to some mint limit. * - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of shares that may be minted. * - MUST NOT revert. */ function maxMint(address receiver) external view returns (uint256 maxShares); /** * @dev Allows an on-chain or off-chain user to simulate the effects of their mint at the current block, given * current on-chain conditions. * * - MUST return as close to and no fewer than the exact amount of assets that would be deposited in a mint call * in the same transaction. I.e. mint should return the same or fewer assets as previewMint if called in the * same transaction. * - MUST NOT account for mint limits like those returned from maxMint and should always act as though the mint * would be accepted, regardless if the user has enough tokens approved, etc. * - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees. * - MUST NOT revert. * * NOTE: any unfavorable discrepancy between convertToAssets and previewMint SHOULD be considered slippage in * share price or some other type of condition, meaning the depositor will lose assets by minting. */ function previewMint(uint256 shares) external view returns (uint256 assets); /** * @dev Mints exactly shares Vault shares to receiver by depositing amount of underlying tokens. * * - MUST emit the Deposit event. * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the mint * execution, and are accounted for during mint. * - MUST revert if all of shares cannot be minted (due to deposit limit being reached, slippage, the user not * approving enough underlying tokens to the Vault contract, etc). * * NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token. */ function mint(uint256 shares, address receiver) external returns (uint256 assets); /** * @dev Returns the maximum amount of the underlying asset that can be withdrawn from the owner balance in the * Vault, through a withdraw call. * * - MUST return a limited value if owner is subject to some withdrawal limit or timelock. * - MUST NOT revert. */ function maxWithdraw(address owner) external view returns (uint256 maxAssets); /** * @dev Allows an on-chain or off-chain user to simulate the effects of their withdrawal at the current block, * given current on-chain conditions. * * - MUST return as close to and no fewer than the exact amount of Vault shares that would be burned in a withdraw * call in the same transaction. I.e. withdraw should return the same or fewer shares as previewWithdraw if * called * in the same transaction. * - MUST NOT account for withdrawal limits like those returned from maxWithdraw and should always act as though * the withdrawal would be accepted, regardless if the user has enough shares, etc. * - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees. * - MUST NOT revert. * * NOTE: any unfavorable discrepancy between convertToShares and previewWithdraw SHOULD be considered slippage in * share price or some other type of condition, meaning the depositor will lose assets by depositing. */ function previewWithdraw(uint256 assets) external view returns (uint256 shares); /** * @dev Burns shares from owner and sends exactly assets of underlying tokens to receiver. * * - MUST emit the Withdraw event. * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the * withdraw execution, and are accounted for during withdraw. * - MUST revert if all of assets cannot be withdrawn (due to withdrawal limit being reached, slippage, the owner * not having enough shares, etc). * * Note that some implementations will require pre-requesting to the Vault before a withdrawal may be performed. * Those methods should be performed separately. */ function withdraw(uint256 assets, address receiver, address owner) external returns (uint256 shares); /** * @dev Returns the maximum amount of Vault shares that can be redeemed from the owner balance in the Vault, * through a redeem call. * * - MUST return a limited value if owner is subject to some withdrawal limit or timelock. * - MUST return balanceOf(owner) if owner is not subject to any withdrawal limit or timelock. * - MUST NOT revert. */ function maxRedeem(address owner) external view returns (uint256 maxShares); /** * @dev Allows an on-chain or off-chain user to simulate the effects of their redeemption at the current block, * given current on-chain conditions. * * - MUST return as close to and no more than the exact amount of assets that would be withdrawn in a redeem call * in the same transaction. I.e. redeem should return the same or more assets as previewRedeem if called in the * same transaction. * - MUST NOT account for redemption limits like those returned from maxRedeem and should always act as though the * redemption would be accepted, regardless if the user has enough shares, etc. * - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees. * - MUST NOT revert. * * NOTE: any unfavorable discrepancy between convertToAssets and previewRedeem SHOULD be considered slippage in * share price or some other type of condition, meaning the depositor will lose assets by redeeming. */ function previewRedeem(uint256 shares) external view returns (uint256 assets); /** * @dev Burns exactly shares from owner and sends assets of underlying tokens to receiver. * * - MUST emit the Withdraw event. * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the * redeem execution, and are accounted for during redeem. * - MUST revert if all of shares cannot be redeemed (due to withdrawal limit being reached, slippage, the owner * not having enough shares, etc). * * NOTE: some implementations will require pre-requesting to the Vault before a withdrawal may be performed. * Those methods should be performed separately. */ function redeem(uint256 shares, address receiver, address owner) external returns (uint256 assets); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.28; struct MarketConfig { /// @notice The maximum amount of assets that can be allocated to the market. uint184 cap; /// @notice Whether the market is in the withdraw queue. bool enabled; /// @notice The timestamp at which the market can be instantly removed from the withdraw queue. uint64 removableAt; } struct PendingUint192 { /// @notice The pending value to set. uint192 value; /// @notice The timestamp at which the pending value becomes valid. uint64 validAt; } struct PendingAddress { /// @notice The pending value to set. address value; /// @notice The timestamp at which the pending value becomes valid. uint64 validAt; } /// @title PendingLib /// @dev Forked with gratitude from Morpho Labs. /// @author Silo Labs /// @custom:contact [email protected] /// @notice Library to manage pending values and their validity timestamp. library PendingLib { /// @dev Updates `_pending`'s value to `_newValue` and its corresponding `validAt` timestamp. /// @dev Assumes `timelock` <= `MAX_TIMELOCK`. function update(PendingUint192 storage _pending, uint184 _newValue, uint256 _timelock) internal { _pending.value = _newValue; // Safe "unchecked" cast because timelock <= MAX_TIMELOCK. _pending.validAt = uint64(block.timestamp + _timelock); } /// @dev Updates `_pending`'s value to `_newValue` and its corresponding `validAt` timestamp. /// @dev Assumes `timelock` <= `MAX_TIMELOCK`. function update(PendingAddress storage _pending, address _newValue, uint256 _timelock) internal { _pending.value = _newValue; // Safe "unchecked" cast because timelock <= MAX_TIMELOCK. _pending.validAt = uint64(block.timestamp + _timelock); } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import {IERC4626} from "openzeppelin5/interfaces/IERC4626.sol"; import {IIncentivesClaimingLogic} from "./IIncentivesClaimingLogic.sol"; import {INotificationReceiver} from "./INotificationReceiver.sol"; /// @title Vault Incentives Module interface interface IVaultIncentivesModule { event IncentivesClaimingLogicAdded(IERC4626 indexed market, IIncentivesClaimingLogic logic); event IncentivesClaimingLogicRemoved(IERC4626 indexed market, IIncentivesClaimingLogic logic); event SubmitIncentivesClaimingLogic(IERC4626 indexed market, IIncentivesClaimingLogic logic); event RevokePendingClaimingLogic(IERC4626 indexed market, IIncentivesClaimingLogic logic); event NotificationReceiverAdded(address notificationReceiver); event NotificationReceiverRemoved(address notificationReceiver); error AddressZero(); error LogicAlreadyAdded(); error LogicNotFound(); error LogicAlreadyPending(); error LogicNotPending(); error CantAcceptLogic(); error NotificationReceiverAlreadyAdded(); error NotificationReceiverNotFound(); error MarketAlreadySet(); error MarketNotConfigured(); error AllProgramsNotStopped(); /// @notice Submit an incentives claiming logic for the vault. /// @notice Add an incentives claiming logic for the vault. /// @param _market The market to add the logic for. /// @param _logic The logic to add. function submitIncentivesClaimingLogic(IERC4626 _market, IIncentivesClaimingLogic _logic) external; /// @notice Accept an incentives claiming logic for the vault. /// @param _market The market to accept the logic for. /// @param _logic The logic to accept. function acceptIncentivesClaimingLogic(IERC4626 _market, IIncentivesClaimingLogic _logic) external; /// @notice Remove an incentives claiming logic for the vault. /// @param _market The market to remove the logic for. /// @param _logic The logic to remove. function removeIncentivesClaimingLogic(IERC4626 _market, IIncentivesClaimingLogic _logic) external; /// @notice Revoke a pending incentives claiming logic for the vault. /// @param _market The market to revoke the logic for. /// @param _logic The logic to revoke. function revokePendingClaimingLogic(IERC4626 _market, IIncentivesClaimingLogic _logic) external; /// @notice Add an incentives distribution solution for the vault. /// @param _notificationReceiver The solution to add. function addNotificationReceiver(INotificationReceiver _notificationReceiver) external; /// @notice Remove an incentives distribution solution for the vault. /// @dev It is very important to be careful when you remove a notification receiver from the incentive module. /// All ongoing incentive distributions must be stopped before removing a notification receiver. /// @param _notificationReceiver The solution to remove. /// @param _allProgramsStopped Reminder for anyone who is removing a notification receiver. function removeNotificationReceiver( INotificationReceiver _notificationReceiver, bool _allProgramsStopped ) external; /// @notice Get all incentives claiming logics for the vault. /// @return logics The logics. function getAllIncentivesClaimingLogics() external view returns (address[] memory logics); /// @notice Get all incentives claiming logics for the vault. /// @param _markets The markets to get the incentives claiming logics for. /// @return logics The logics. function getMarketsIncentivesClaimingLogics(address[] calldata _markets) external view returns (address[] memory logics); /// @notice Get all incentives distribution solutions for the vault. /// @return _notificationReceivers function getNotificationReceivers() external view returns (address[] memory _notificationReceivers); /// @notice Get incentives claiming logics for a market. /// @param _market The market to get the incentives claiming logics for. /// @return logics function getMarketIncentivesClaimingLogics(IERC4626 _market) external view returns (address[] memory logics); /// @notice Get all configured markets for the vault. /// @return markets function getConfiguredMarkets() external view returns (address[] memory markets); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import {IERC4626} from "openzeppelin5/interfaces/IERC4626.sol"; import {ISiloVault} from "./ISiloVault.sol"; /// @dev Max settable flow cap, such that caps can always be stored on 128 bits. /// @dev The actual max possible flow cap is type(uint128).max / 2 uint128 constant MAX_SETTABLE_FLOW_CAP = type(uint128).max / 2; struct FlowCaps { /// @notice The maximum allowed inflow in a market. uint128 maxIn; /// @notice The maximum allowed outflow in a market. uint128 maxOut; } struct FlowCapsConfig { /// @notice Market for which to change flow caps. IERC4626 market; /// @notice New flow caps for this market. FlowCaps caps; } struct Withdrawal { /// @notice The market from which to withdraw. IERC4626 market; /// @notice The amount to withdraw. uint128 amount; } /// @dev This interface is used for factorizing IPublicAllocatorStaticTyping and IPublicAllocator. /// @dev Consider using the IPublicAllocator interface instead of this one. interface IPublicAllocatorBase { /// @notice The admin for a given vault. function admin(ISiloVault _vault) external view returns (address); /// @notice The current ETH fee for a given vault. function fee(ISiloVault _vault) external view returns (uint256); /// @notice The accrued ETH fee for a given vault. function accruedFee(ISiloVault _vault) external view returns (uint256); /// @notice Reallocates from a list of markets to one market. /// @param _vault The SiloVault vault to reallocate. /// @param _withdrawals The markets to withdraw from,and the amounts to withdraw. /// @param _supplyMarket The market receiving total withdrawn to. /// @dev Will call SiloVault's `reallocate`. /// @dev Checks that the flow caps are respected. /// @dev Will revert when `withdrawals` contains a duplicate or is not sorted. /// @dev Will revert if `withdrawals` contains the supply market. /// @dev Will revert if a withdrawal amount is larger than available liquidity. /// @dev flow is as follow: /// - iterating over withdrawals markets /// - increase flowCaps.maxIn by withdrawal amount for market /// - decrease flowCaps.maxOut by withdrawal amount for market /// - put market into allocation list with amount equal `market deposit - withdrawal amount` /// - increase total amount to withdraw /// - after iteration, with allocation list ready, final steps are: /// - decrease flowCaps.maxIn by total withdrawal amount for `supplyMarket` /// - increase flowCaps.maxOut by total withdrawal amount for `supplyMarket` /// - add `supplyMarket` to allocation list with MAX assets /// - run `reallocate` on SiloVault function reallocateTo(ISiloVault _vault, Withdrawal[] calldata _withdrawals, IERC4626 _supplyMarket) external payable; /// @notice Sets the admin for a given vault. function setAdmin(ISiloVault _vault, address _newAdmin) external; /// @notice Sets the fee for a given vault. function setFee(ISiloVault _vault, uint256 _newFee) external; /// @notice Transfers the current balance to `feeRecipient` for a given vault. function transferFee(ISiloVault _vault, address payable _feeRecipient) external; /// @notice Sets the maximum inflow and outflow through public allocation for some markets for a given vault. /// @dev Max allowed inflow/outflow is MAX_SETTABLE_FLOW_CAP. /// @dev Doesn't revert if it doesn't change the storage at all. function setFlowCaps(ISiloVault _vault, FlowCapsConfig[] calldata _config) external; } /// @dev This interface is inherited by PublicAllocator so that function signatures are checked by the compiler. /// @dev Consider using the IPublicAllocator interface instead of this one. interface IPublicAllocatorStaticTyping is IPublicAllocatorBase { /// @notice Returns (maximum inflow, maximum outflow) through public allocation of a given market for a given vault. function flowCaps(ISiloVault _vault, IERC4626 _market) external view returns (uint128, uint128); } /// @title IPublicAllocator /// @dev Forked with gratitude from Morpho Labs. /// @author Silo Labs /// @custom:contact [email protected] /// @dev Use this interface for PublicAllocator to have access to all the functions with the appropriate function /// signatures. interface IPublicAllocator is IPublicAllocatorBase { /// @notice Returns the maximum inflow and maximum outflow through public allocation of a given market for a given /// vault. function flowCaps(ISiloVault _vault, IERC4626 _market) external view returns (FlowCaps memory); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SafeCast.sol) // This file was procedurally generated from scripts/generate/templates/SafeCast.js. pragma solidity ^0.8.20; /** * @dev Wrappers over Solidity's uintXX/intXX/bool 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. */ library SafeCast { /** * @dev Value doesn't fit in an uint of `bits` size. */ error SafeCastOverflowedUintDowncast(uint8 bits, uint256 value); /** * @dev An int value doesn't fit in an uint of `bits` size. */ error SafeCastOverflowedIntToUint(int256 value); /** * @dev Value doesn't fit in an int of `bits` size. */ error SafeCastOverflowedIntDowncast(uint8 bits, int256 value); /** * @dev An uint value doesn't fit in an int of `bits` size. */ error SafeCastOverflowedUintToInt(uint256 value); /** * @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 */ function toUint248(uint256 value) internal pure returns (uint248) { if (value > type(uint248).max) { revert SafeCastOverflowedUintDowncast(248, value); } 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 */ function toUint240(uint256 value) internal pure returns (uint240) { if (value > type(uint240).max) { revert SafeCastOverflowedUintDowncast(240, value); } 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 */ function toUint232(uint256 value) internal pure returns (uint232) { if (value > type(uint232).max) { revert SafeCastOverflowedUintDowncast(232, value); } 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 */ function toUint224(uint256 value) internal pure returns (uint224) { if (value > type(uint224).max) { revert SafeCastOverflowedUintDowncast(224, value); } 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 */ function toUint216(uint256 value) internal pure returns (uint216) { if (value > type(uint216).max) { revert SafeCastOverflowedUintDowncast(216, value); } 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 */ function toUint208(uint256 value) internal pure returns (uint208) { if (value > type(uint208).max) { revert SafeCastOverflowedUintDowncast(208, value); } 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 */ function toUint200(uint256 value) internal pure returns (uint200) { if (value > type(uint200).max) { revert SafeCastOverflowedUintDowncast(200, value); } 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 */ function toUint192(uint256 value) internal pure returns (uint192) { if (value > type(uint192).max) { revert SafeCastOverflowedUintDowncast(192, value); } 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 */ function toUint184(uint256 value) internal pure returns (uint184) { if (value > type(uint184).max) { revert SafeCastOverflowedUintDowncast(184, value); } 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 */ function toUint176(uint256 value) internal pure returns (uint176) { if (value > type(uint176).max) { revert SafeCastOverflowedUintDowncast(176, value); } 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 */ function toUint168(uint256 value) internal pure returns (uint168) { if (value > type(uint168).max) { revert SafeCastOverflowedUintDowncast(168, value); } 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 */ function toUint160(uint256 value) internal pure returns (uint160) { if (value > type(uint160).max) { revert SafeCastOverflowedUintDowncast(160, value); } 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 */ function toUint152(uint256 value) internal pure returns (uint152) { if (value > type(uint152).max) { revert SafeCastOverflowedUintDowncast(152, value); } 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 */ function toUint144(uint256 value) internal pure returns (uint144) { if (value > type(uint144).max) { revert SafeCastOverflowedUintDowncast(144, value); } 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 */ function toUint136(uint256 value) internal pure returns (uint136) { if (value > type(uint136).max) { revert SafeCastOverflowedUintDowncast(136, value); } 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 */ function toUint128(uint256 value) internal pure returns (uint128) { if (value > type(uint128).max) { revert SafeCastOverflowedUintDowncast(128, value); } 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 */ function toUint120(uint256 value) internal pure returns (uint120) { if (value > type(uint120).max) { revert SafeCastOverflowedUintDowncast(120, value); } 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 */ function toUint112(uint256 value) internal pure returns (uint112) { if (value > type(uint112).max) { revert SafeCastOverflowedUintDowncast(112, value); } 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 */ function toUint104(uint256 value) internal pure returns (uint104) { if (value > type(uint104).max) { revert SafeCastOverflowedUintDowncast(104, value); } 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 */ function toUint96(uint256 value) internal pure returns (uint96) { if (value > type(uint96).max) { revert SafeCastOverflowedUintDowncast(96, value); } 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 */ function toUint88(uint256 value) internal pure returns (uint88) { if (value > type(uint88).max) { revert SafeCastOverflowedUintDowncast(88, value); } 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 */ function toUint80(uint256 value) internal pure returns (uint80) { if (value > type(uint80).max) { revert SafeCastOverflowedUintDowncast(80, value); } 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 */ function toUint72(uint256 value) internal pure returns (uint72) { if (value > type(uint72).max) { revert SafeCastOverflowedUintDowncast(72, value); } 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 */ function toUint64(uint256 value) internal pure returns (uint64) { if (value > type(uint64).max) { revert SafeCastOverflowedUintDowncast(64, value); } 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 */ function toUint56(uint256 value) internal pure returns (uint56) { if (value > type(uint56).max) { revert SafeCastOverflowedUintDowncast(56, value); } 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 */ function toUint48(uint256 value) internal pure returns (uint48) { if (value > type(uint48).max) { revert SafeCastOverflowedUintDowncast(48, value); } 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 */ function toUint40(uint256 value) internal pure returns (uint40) { if (value > type(uint40).max) { revert SafeCastOverflowedUintDowncast(40, value); } 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 */ function toUint32(uint256 value) internal pure returns (uint32) { if (value > type(uint32).max) { revert SafeCastOverflowedUintDowncast(32, value); } 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 */ function toUint24(uint256 value) internal pure returns (uint24) { if (value > type(uint24).max) { revert SafeCastOverflowedUintDowncast(24, value); } 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 */ function toUint16(uint256 value) internal pure returns (uint16) { if (value > type(uint16).max) { revert SafeCastOverflowedUintDowncast(16, value); } 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 */ function toUint8(uint256 value) internal pure returns (uint8) { if (value > type(uint8).max) { revert SafeCastOverflowedUintDowncast(8, value); } return uint8(value); } /** * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. */ function toUint256(int256 value) internal pure returns (uint256) { if (value < 0) { revert SafeCastOverflowedIntToUint(value); } 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 */ function toInt248(int256 value) internal pure returns (int248 downcasted) { downcasted = int248(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(248, 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 */ function toInt240(int256 value) internal pure returns (int240 downcasted) { downcasted = int240(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(240, 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 */ function toInt232(int256 value) internal pure returns (int232 downcasted) { downcasted = int232(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(232, 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 */ function toInt224(int256 value) internal pure returns (int224 downcasted) { downcasted = int224(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(224, 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 */ function toInt216(int256 value) internal pure returns (int216 downcasted) { downcasted = int216(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(216, 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 */ function toInt208(int256 value) internal pure returns (int208 downcasted) { downcasted = int208(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(208, 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 */ function toInt200(int256 value) internal pure returns (int200 downcasted) { downcasted = int200(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(200, 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 */ function toInt192(int256 value) internal pure returns (int192 downcasted) { downcasted = int192(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(192, 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 */ function toInt184(int256 value) internal pure returns (int184 downcasted) { downcasted = int184(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(184, 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 */ function toInt176(int256 value) internal pure returns (int176 downcasted) { downcasted = int176(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(176, 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 */ function toInt168(int256 value) internal pure returns (int168 downcasted) { downcasted = int168(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(168, 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 */ function toInt160(int256 value) internal pure returns (int160 downcasted) { downcasted = int160(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(160, 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 */ function toInt152(int256 value) internal pure returns (int152 downcasted) { downcasted = int152(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(152, 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 */ function toInt144(int256 value) internal pure returns (int144 downcasted) { downcasted = int144(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(144, 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 */ function toInt136(int256 value) internal pure returns (int136 downcasted) { downcasted = int136(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(136, 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 */ function toInt128(int256 value) internal pure returns (int128 downcasted) { downcasted = int128(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(128, 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 */ function toInt120(int256 value) internal pure returns (int120 downcasted) { downcasted = int120(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(120, 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 */ function toInt112(int256 value) internal pure returns (int112 downcasted) { downcasted = int112(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(112, 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 */ function toInt104(int256 value) internal pure returns (int104 downcasted) { downcasted = int104(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(104, 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 */ function toInt96(int256 value) internal pure returns (int96 downcasted) { downcasted = int96(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(96, 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 */ function toInt88(int256 value) internal pure returns (int88 downcasted) { downcasted = int88(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(88, 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 */ function toInt80(int256 value) internal pure returns (int80 downcasted) { downcasted = int80(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(80, 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 */ function toInt72(int256 value) internal pure returns (int72 downcasted) { downcasted = int72(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(72, 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 */ function toInt64(int256 value) internal pure returns (int64 downcasted) { downcasted = int64(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(64, 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 */ function toInt56(int256 value) internal pure returns (int56 downcasted) { downcasted = int56(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(56, 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 */ function toInt48(int256 value) internal pure returns (int48 downcasted) { downcasted = int48(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(48, 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 */ function toInt40(int256 value) internal pure returns (int40 downcasted) { downcasted = int40(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(40, 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 */ function toInt32(int256 value) internal pure returns (int32 downcasted) { downcasted = int32(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(32, 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 */ function toInt24(int256 value) internal pure returns (int24 downcasted) { downcasted = int24(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(24, 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 */ function toInt16(int256 value) internal pure returns (int16 downcasted) { downcasted = int16(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(16, 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 */ function toInt8(int256 value) internal pure returns (int8 downcasted) { downcasted = int8(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(8, value); } } /** * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. */ function toInt256(uint256 value) internal pure returns (int256) { // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive if (value > uint256(type(int256).max)) { revert SafeCastOverflowedUintToInt(value); } return int256(value); } /** * @dev Cast a boolean (false or true) to a uint256 (0 or 1) with no jump. */ function toUint(bool b) internal pure returns (uint256 u) { /// @solidity memory-safe-assembly assembly { u := iszero(iszero(b)) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/ERC4626.sol) pragma solidity ^0.8.20; import {IERC20, IERC20Metadata, ERC20} from "../ERC20.sol"; import {SafeERC20} from "../utils/SafeERC20.sol"; import {IERC4626} from "../../../interfaces/IERC4626.sol"; import {Math} from "../../../utils/math/Math.sol"; /** * @dev Implementation of the ERC-4626 "Tokenized Vault Standard" as defined in * https://eips.ethereum.org/EIPS/eip-4626[ERC-4626]. * * This extension allows the minting and burning of "shares" (represented using the ERC-20 inheritance) in exchange for * underlying "assets" through standardized {deposit}, {mint}, {redeem} and {burn} workflows. This contract extends * the ERC-20 standard. Any additional extensions included along it would affect the "shares" token represented by this * contract and not the "assets" token which is an independent contract. * * [CAUTION] * ==== * In empty (or nearly empty) ERC-4626 vaults, deposits are at high risk of being stolen through frontrunning * with a "donation" to the vault that inflates the price of a share. This is variously known as a donation or inflation * attack and is essentially a problem of slippage. Vault deployers can protect against this attack by making an initial * deposit of a non-trivial amount of the asset, such that price manipulation becomes infeasible. Withdrawals may * similarly be affected by slippage. Users can protect against this attack as well as unexpected slippage in general by * verifying the amount received is as expected, using a wrapper that performs these checks such as * https://github.com/fei-protocol/ERC4626#erc4626router-and-base[ERC4626Router]. * * Since v4.9, this implementation introduces configurable virtual assets and shares to help developers mitigate that risk. * The `_decimalsOffset()` corresponds to an offset in the decimal representation between the underlying asset's decimals * and the vault decimals. This offset also determines the rate of virtual shares to virtual assets in the vault, which * itself determines the initial exchange rate. While not fully preventing the attack, analysis shows that the default * offset (0) makes it non-profitable even if an attacker is able to capture value from multiple user deposits, as a result * of the value being captured by the virtual shares (out of the attacker's donation) matching the attacker's expected gains. * With a larger offset, the attack becomes orders of magnitude more expensive than it is profitable. More details about the * underlying math can be found xref:erc4626.adoc#inflation-attack[here]. * * The drawback of this approach is that the virtual shares do capture (a very small) part of the value being accrued * to the vault. Also, if the vault experiences losses, the users try to exit the vault, the virtual shares and assets * will cause the first user to exit to experience reduced losses in detriment to the last users that will experience * bigger losses. Developers willing to revert back to the pre-v4.9 behavior just need to override the * `_convertToShares` and `_convertToAssets` functions. * * To learn more, check out our xref:ROOT:erc4626.adoc[ERC-4626 guide]. * ==== */ abstract contract ERC4626 is ERC20, IERC4626 { using Math for uint256; IERC20 private immutable _asset; uint8 private immutable _underlyingDecimals; /** * @dev Attempted to deposit more assets than the max amount for `receiver`. */ error ERC4626ExceededMaxDeposit(address receiver, uint256 assets, uint256 max); /** * @dev Attempted to mint more shares than the max amount for `receiver`. */ error ERC4626ExceededMaxMint(address receiver, uint256 shares, uint256 max); /** * @dev Attempted to withdraw more assets than the max amount for `receiver`. */ error ERC4626ExceededMaxWithdraw(address owner, uint256 assets, uint256 max); /** * @dev Attempted to redeem more shares than the max amount for `receiver`. */ error ERC4626ExceededMaxRedeem(address owner, uint256 shares, uint256 max); /** * @dev Set the underlying asset contract. This must be an ERC20-compatible contract (ERC-20 or ERC-777). */ constructor(IERC20 asset_) { (bool success, uint8 assetDecimals) = _tryGetAssetDecimals(asset_); _underlyingDecimals = success ? assetDecimals : 18; _asset = asset_; } /** * @dev Attempts to fetch the asset decimals. A return value of false indicates that the attempt failed in some way. */ function _tryGetAssetDecimals(IERC20 asset_) private view returns (bool, uint8) { (bool success, bytes memory encodedDecimals) = address(asset_).staticcall( abi.encodeCall(IERC20Metadata.decimals, ()) ); if (success && encodedDecimals.length >= 32) { uint256 returnedDecimals = abi.decode(encodedDecimals, (uint256)); if (returnedDecimals <= type(uint8).max) { return (true, uint8(returnedDecimals)); } } return (false, 0); } /** * @dev Decimals are computed by adding the decimal offset on top of the underlying asset's decimals. This * "original" value is cached during construction of the vault contract. If this read operation fails (e.g., the * asset has not been created yet), a default of 18 is used to represent the underlying asset's decimals. * * See {IERC20Metadata-decimals}. */ function decimals() public view virtual override(IERC20Metadata, ERC20) returns (uint8) { return _underlyingDecimals + _decimalsOffset(); } /** @dev See {IERC4626-asset}. */ function asset() public view virtual returns (address) { return address(_asset); } /** @dev See {IERC4626-totalAssets}. */ function totalAssets() public view virtual returns (uint256) { return _asset.balanceOf(address(this)); } /** @dev See {IERC4626-convertToShares}. */ function convertToShares(uint256 assets) public view virtual returns (uint256) { return _convertToShares(assets, Math.Rounding.Floor); } /** @dev See {IERC4626-convertToAssets}. */ function convertToAssets(uint256 shares) public view virtual returns (uint256) { return _convertToAssets(shares, Math.Rounding.Floor); } /** @dev See {IERC4626-maxDeposit}. */ function maxDeposit(address) public view virtual returns (uint256) { return type(uint256).max; } /** @dev See {IERC4626-maxMint}. */ function maxMint(address) public view virtual returns (uint256) { return type(uint256).max; } /** @dev See {IERC4626-maxWithdraw}. */ function maxWithdraw(address owner) public view virtual returns (uint256) { return _convertToAssets(balanceOf(owner), Math.Rounding.Floor); } /** @dev See {IERC4626-maxRedeem}. */ function maxRedeem(address owner) public view virtual returns (uint256) { return balanceOf(owner); } /** @dev See {IERC4626-previewDeposit}. */ function previewDeposit(uint256 assets) public view virtual returns (uint256) { return _convertToShares(assets, Math.Rounding.Floor); } /** @dev See {IERC4626-previewMint}. */ function previewMint(uint256 shares) public view virtual returns (uint256) { return _convertToAssets(shares, Math.Rounding.Ceil); } /** @dev See {IERC4626-previewWithdraw}. */ function previewWithdraw(uint256 assets) public view virtual returns (uint256) { return _convertToShares(assets, Math.Rounding.Ceil); } /** @dev See {IERC4626-previewRedeem}. */ function previewRedeem(uint256 shares) public view virtual returns (uint256) { return _convertToAssets(shares, Math.Rounding.Floor); } /** @dev See {IERC4626-deposit}. */ function deposit(uint256 assets, address receiver) public virtual returns (uint256) { uint256 maxAssets = maxDeposit(receiver); if (assets > maxAssets) { revert ERC4626ExceededMaxDeposit(receiver, assets, maxAssets); } uint256 shares = previewDeposit(assets); _deposit(_msgSender(), receiver, assets, shares); return shares; } /** @dev See {IERC4626-mint}. */ function mint(uint256 shares, address receiver) public virtual returns (uint256) { uint256 maxShares = maxMint(receiver); if (shares > maxShares) { revert ERC4626ExceededMaxMint(receiver, shares, maxShares); } uint256 assets = previewMint(shares); _deposit(_msgSender(), receiver, assets, shares); return assets; } /** @dev See {IERC4626-withdraw}. */ function withdraw(uint256 assets, address receiver, address owner) public virtual returns (uint256) { uint256 maxAssets = maxWithdraw(owner); if (assets > maxAssets) { revert ERC4626ExceededMaxWithdraw(owner, assets, maxAssets); } uint256 shares = previewWithdraw(assets); _withdraw(_msgSender(), receiver, owner, assets, shares); return shares; } /** @dev See {IERC4626-redeem}. */ function redeem(uint256 shares, address receiver, address owner) public virtual returns (uint256) { uint256 maxShares = maxRedeem(owner); if (shares > maxShares) { revert ERC4626ExceededMaxRedeem(owner, shares, maxShares); } uint256 assets = previewRedeem(shares); _withdraw(_msgSender(), receiver, owner, assets, shares); return assets; } /** * @dev Internal conversion function (from assets to shares) with support for rounding direction. */ function _convertToShares(uint256 assets, Math.Rounding rounding) internal view virtual returns (uint256) { return assets.mulDiv(totalSupply() + 10 ** _decimalsOffset(), totalAssets() + 1, rounding); } /** * @dev Internal conversion function (from shares to assets) with support for rounding direction. */ function _convertToAssets(uint256 shares, Math.Rounding rounding) internal view virtual returns (uint256) { return shares.mulDiv(totalAssets() + 1, totalSupply() + 10 ** _decimalsOffset(), rounding); } /** * @dev Deposit/mint common workflow. */ function _deposit(address caller, address receiver, uint256 assets, uint256 shares) internal virtual { // If _asset is ERC-777, `transferFrom` can trigger a reentrancy BEFORE the transfer happens through the // `tokensToSend` hook. On the other hand, the `tokenReceived` hook, that is triggered after the transfer, // calls the vault, which is assumed not malicious. // // Conclusion: we need to do the transfer before we mint so that any reentrancy would happen before the // assets are transferred and before the shares are minted, which is a valid state. // slither-disable-next-line reentrancy-no-eth SafeERC20.safeTransferFrom(_asset, caller, address(this), assets); _mint(receiver, shares); emit Deposit(caller, receiver, assets, shares); } /** * @dev Withdraw/redeem common workflow. */ function _withdraw( address caller, address receiver, address owner, uint256 assets, uint256 shares ) internal virtual { if (caller != owner) { _spendAllowance(owner, caller, shares); } // If _asset is ERC-777, `transfer` can trigger a reentrancy AFTER the transfer happens through the // `tokensReceived` hook. On the other hand, the `tokensToSend` hook, that is triggered before the transfer, // calls the vault, which is assumed not malicious. // // Conclusion: we need to do the transfer after the burn so that any reentrancy would happen after the // shares are burned and after the assets are transferred, which is a valid state. _burn(owner, shares); SafeERC20.safeTransfer(_asset, receiver, assets); emit Withdraw(caller, receiver, owner, assets, shares); } function _decimalsOffset() internal view virtual returns (uint8) { return 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable2Step.sol) pragma solidity ^0.8.20; import {Ownable} from "./Ownable.sol"; /** * @dev Contract module which provides access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * This extension of the {Ownable} contract includes a two-step mechanism to transfer * ownership, where the new owner must call {acceptOwnership} in order to replace the * old one. This can help prevent common mistakes, such as transfers of ownership to * incorrect accounts, or to contracts that are unable to interact with the * permission system. * * The initial owner is specified at deployment time in the constructor for `Ownable`. This * can later be changed with {transferOwnership} and {acceptOwnership}. * * This module is used through inheritance. It will make available all functions * from parent (Ownable). */ abstract contract Ownable2Step is Ownable { address private _pendingOwner; event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner); /** * @dev Returns the address of the pending owner. */ function pendingOwner() public view virtual returns (address) { return _pendingOwner; } /** * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one. * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual override onlyOwner { _pendingOwner = newOwner; emit OwnershipTransferStarted(owner(), newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner. * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual override { delete _pendingOwner; super._transferOwnership(newOwner); } /** * @dev The new owner accepts the ownership transfer. */ function acceptOwnership() public virtual { address sender = _msgSender(); if (pendingOwner() != sender) { revert OwnableUnauthorizedAccount(sender); } _transferOwnership(sender); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (utils/Multicall.sol) pragma solidity ^0.8.20; import {Address} from "./Address.sol"; import {Context} from "./Context.sol"; /** * @dev Provides a function to batch together multiple calls in a single external call. * * Consider any assumption about calldata validation performed by the sender may be violated if it's not especially * careful about sending transactions invoking {multicall}. For example, a relay address that filters function * selectors won't filter calls nested within a {multicall} operation. * * NOTE: Since 5.0.1 and 4.9.4, this contract identifies non-canonical contexts (i.e. `msg.sender` is not {_msgSender}). * If a non-canonical context is identified, the following self `delegatecall` appends the last bytes of `msg.data` * to the subcall. This makes it safe to use with {ERC2771Context}. Contexts that don't affect the resolution of * {_msgSender} are not propagated to subcalls. */ abstract contract Multicall is Context { /** * @dev Receives and executes a batch of function calls on this contract. * @custom:oz-upgrades-unsafe-allow-reachable delegatecall */ function multicall(bytes[] calldata data) external virtual returns (bytes[] memory results) { bytes memory context = msg.sender == _msgSender() ? new bytes(0) : msg.data[msg.data.length - _contextSuffixLength():]; results = new bytes[](data.length); for (uint256 i = 0; i < data.length; i++) { results[i] = Address.functionDelegateCall(address(this), bytes.concat(data[i], context)); } return results; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "./IERC20.sol"; import {IERC20Metadata} from "./extensions/IERC20Metadata.sol"; import {Context} from "../../utils/Context.sol"; import {IERC20Errors} from "../../interfaces/draft-IERC6093.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}. * * TIP: For a detailed writeup see our guide * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * The default value of {decimals} is 18. To change this, you should override * this function so it returns a different value. * * 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 ERC-20 * 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 ERC may not emit * these events, as it isn't required by the specification. */ abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors { mapping(address account => uint256) private _balances; mapping(address account => mapping(address spender => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * 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 returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual 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 default value returned by this function, unless * it's 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 returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual 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 `value`. */ function transfer(address to, uint256 value) public virtual returns (bool) { address owner = _msgSender(); _transfer(owner, to, value); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `value` 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 value) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, value); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the ERC. 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 `value`. * - the caller must have allowance for ``from``'s tokens of at least * `value`. */ function transferFrom(address from, address to, uint256 value) public virtual returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, value); _transfer(from, to, value); return true; } /** * @dev Moves a `value` 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. * * NOTE: This function is not virtual, {_update} should be overridden instead. */ function _transfer(address from, address to, uint256 value) internal { if (from == address(0)) { revert ERC20InvalidSender(address(0)); } if (to == address(0)) { revert ERC20InvalidReceiver(address(0)); } _update(from, to, value); } /** * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from` * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding * this function. * * Emits a {Transfer} event. */ function _update(address from, address to, uint256 value) internal virtual { if (from == address(0)) { // Overflow check required: The rest of the code assumes that totalSupply never overflows _totalSupply += value; } else { uint256 fromBalance = _balances[from]; if (fromBalance < value) { revert ERC20InsufficientBalance(from, fromBalance, value); } unchecked { // Overflow not possible: value <= fromBalance <= totalSupply. _balances[from] = fromBalance - value; } } if (to == address(0)) { unchecked { // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply. _totalSupply -= value; } } else { unchecked { // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256. _balances[to] += value; } } emit Transfer(from, to, value); } /** * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0). * Relies on the `_update` mechanism * * Emits a {Transfer} event with `from` set to the zero address. * * NOTE: This function is not virtual, {_update} should be overridden instead. */ function _mint(address account, uint256 value) internal { if (account == address(0)) { revert ERC20InvalidReceiver(address(0)); } _update(address(0), account, value); } /** * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply. * Relies on the `_update` mechanism. * * Emits a {Transfer} event with `to` set to the zero address. * * NOTE: This function is not virtual, {_update} should be overridden instead */ function _burn(address account, uint256 value) internal { if (account == address(0)) { revert ERC20InvalidSender(address(0)); } _update(account, address(0), value); } /** * @dev Sets `value` 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. * * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument. */ function _approve(address owner, address spender, uint256 value) internal { _approve(owner, spender, value, true); } /** * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event. * * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any * `Approval` event during `transferFrom` operations. * * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to * true using the following override: * ``` * function _approve(address owner, address spender, uint256 value, bool) internal virtual override { * super._approve(owner, spender, value, true); * } * ``` * * Requirements are the same as {_approve}. */ function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual { if (owner == address(0)) { revert ERC20InvalidApprover(address(0)); } if (spender == address(0)) { revert ERC20InvalidSpender(address(0)); } _allowances[owner][spender] = value; if (emitEvent) { emit Approval(owner, spender, value); } } /** * @dev Updates `owner` s allowance for `spender` based on spent `value`. * * Does not update the allowance value in case of infinite allowance. * Revert if not enough allowance is available. * * Does not emit an {Approval} event. */ function _spendAllowance(address owner, address spender, uint256 value) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { if (currentAllowance < value) { revert ERC20InsufficientAllowance(spender, currentAllowance, value); } unchecked { _approve(owner, spender, currentAllowance - value, false); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; import {IERC1363} from "../../../interfaces/IERC1363.sol"; import {Address} from "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC-20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; /** * @dev An operation with an ERC-20 token failed. */ error SafeERC20FailedOperation(address token); /** * @dev Indicates a failed `decreaseAllowance` request. */ error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease); /** * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value))); } /** * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful. */ function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value))); } /** * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 oldAllowance = token.allowance(address(this), spender); forceApprove(token, spender, oldAllowance + value); } /** * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no * value, non-reverting calls are assumed to be successful. */ function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal { unchecked { uint256 currentAllowance = token.allowance(address(this), spender); if (currentAllowance < requestedDecrease) { revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease); } forceApprove(token, spender, currentAllowance - requestedDecrease); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval * to be set to zero before setting it to a non-zero value, such as USDT. */ function forceApprove(IERC20 token, address spender, uint256 value) internal { bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value)); if (!_callOptionalReturnBool(token, approvalCall)) { _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0))); _callOptionalReturn(token, approvalCall); } } /** * @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when * targeting contracts. * * Reverts if the returned value is other than `true`. */ function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal { if (to.code.length == 0) { safeTransfer(token, to, value); } else if (!token.transferAndCall(to, value, data)) { revert SafeERC20FailedOperation(address(token)); } } /** * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when * targeting contracts. * * Reverts if the returned value is other than `true`. */ function transferFromAndCallRelaxed( IERC1363 token, address from, address to, uint256 value, bytes memory data ) internal { if (to.code.length == 0) { safeTransferFrom(token, from, to, value); } else if (!token.transferFromAndCall(from, to, value, data)) { revert SafeERC20FailedOperation(address(token)); } } /** * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when * targeting contracts. * * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}. * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall} * once without retrying, and relies on the returned value to be true. * * Reverts if the returned value is other than `true`. */ function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal { if (to.code.length == 0) { forceApprove(token, to, value); } else if (!token.approveAndCall(to, value, data)) { revert SafeERC20FailedOperation(address(token)); } } /** * @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); if (returndata.length != 0 && !abi.decode(returndata, (bool))) { revert SafeERC20FailedOperation(address(token)); } } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). * * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead. */ function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false // and not revert is the subcall reverts. (bool success, bytes memory returndata) = address(token).call(data); return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0; } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; import {ErrorsLib} from "../libraries/ErrorsLib.sol"; /// @title UtilsLib /// @author Morpho Labs /// @custom:contact [email protected] /// @notice Library exposing helpers. /// @dev Inspired by https://github.com/morpho-org/morpho-utils. library UtilsLib { /// @dev Returns true if there is exactly one zero among `x` and `y`. function exactlyOneZero(uint256 x, uint256 y) internal pure returns (bool z) { assembly { z := xor(iszero(x), iszero(y)) } } /// @dev Returns the min of `x` and `y`. function min(uint256 x, uint256 y) internal pure returns (uint256 z) { assembly { z := xor(x, mul(xor(x, y), lt(y, x))) } } /// @dev Returns `x` safely cast to uint128. function toUint128(uint256 x) internal pure returns (uint128) { require(x <= type(uint128).max, ErrorsLib.MAX_UINT128_EXCEEDED); return uint128(x); } /// @dev Returns max(0, x - y). function zeroFloorSub(uint256 x, uint256 y) internal pure returns (uint256 z) { assembly { z := mul(gt(x, y), sub(x, y)) } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.28; import {IERC20Metadata} from "openzeppelin5/token/ERC20/extensions/IERC20Metadata.sol"; import {IsContract} from "./IsContract.sol"; library TokenHelper { uint256 private constant _BYTES32_SIZE = 32; error TokenIsNotAContract(); function assertAndGetDecimals(address _token) internal view returns (uint256) { (bool hasMetadata, bytes memory data) = _tokenMetadataCall(_token, abi.encodeCall(IERC20Metadata.decimals, ())); // decimals() is optional in the ERC20 standard, so if metadata is not accessible // we assume there are no decimals and use 0. if (!hasMetadata) { return 0; } return abi.decode(data, (uint8)); } /// @dev Returns the symbol for the provided ERC20 token. /// An empty string is returned if the call to the token didn't succeed. /// @param _token address of the token to get the symbol for /// @return assetSymbol the token symbol function symbol(address _token) internal view returns (string memory assetSymbol) { (bool hasMetadata, bytes memory data) = _tokenMetadataCall(_token, abi.encodeCall(IERC20Metadata.symbol, ())); if (!hasMetadata || data.length == 0) { return "?"; } else if (data.length == _BYTES32_SIZE) { return string(removeZeros(data)); } else { return abi.decode(data, (string)); } } /// @dev Removes bytes with value equal to 0 from the provided byte array. /// @param _data byte array from which to remove zeroes /// @return result byte array with zeroes removed function removeZeros(bytes memory _data) internal pure returns (bytes memory result) { uint256 n = _data.length; for (uint256 i; i < n; i++) { if (_data[i] == 0) continue; result = abi.encodePacked(result, _data[i]); } } /// @dev Performs a staticcall to the token to get its metadata (symbol, decimals, name) function _tokenMetadataCall(address _token, bytes memory _data) private view returns (bool, bytes memory) { // We need to do this before the call, otherwise the call will succeed even for EOAs require(IsContract.isContract(_token), TokenIsNotAContract()); (bool success, bytes memory result) = _token.staticcall(_data); // If the call reverted we assume the token doesn't follow the metadata extension if (!success) { return (false, ""); } return (true, result); } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Notification Receiver interface interface INotificationReceiver { /// @notice Called after a token transfer. /// @dev Notifies the solution about the token transfer. /// @param _sender address empty on mint /// @param _senderBalance uint256 sender balance AFTER token transfer /// @param _recipient address empty on burn /// @param _recipientBalance uint256 recipient balance AFTER token transfer /// @param _totalSupply uint256 totalSupply AFTER token transfer /// @param _amount uint256 transfer amount function afterTokenTransfer( address _sender, uint256 _senderBalance, address _recipient, uint256 _recipientBalance, uint256 _totalSupply, uint256 _amount ) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Incentives Claiming Logic interface interface IIncentivesClaimingLogic { error VaultIncentivesControllerZeroAddress(); error SiloIncentivesControllerZeroAddress(); /// @notice Claim and distribute rewards to the vault. /// @dev Can claim rewards from multiple sources and distribute them to the vault users. function claimRewardsAndDistribute() external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.28; /// @title ConstantsLib /// @dev Forked with gratitude from Morpho Labs. /// @author Silo Labs /// @custom:contact [email protected] /// @notice Library exposing constants. library ConstantsLib { /// @dev The maximum delay of a timelock. uint256 internal constant MAX_TIMELOCK = 2 weeks; /// @dev The minimum delay of a timelock. uint256 internal constant MIN_TIMELOCK = 1 seconds; /// @dev The maximum number of markets in the supply/withdraw queue. uint256 internal constant MAX_QUEUE_LENGTH = 30; /// @dev The maximum fee the vault can have (50%). uint256 internal constant MAX_FEE = 0.5e18; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.28; import {IERC4626} from "openzeppelin5/interfaces/IERC4626.sol"; /// @title ErrorsLib /// @dev Forked with gratitude from Morpho Labs. /// @author Silo Labs /// @custom:contact [email protected] /// @notice Library exposing error messages. library ErrorsLib { /// @notice Thrown when asset decimals is too big error NotSupportedDecimals(); /// @notice Thrown when deposit generates zero shares error InputZeroShares(); /// @notice Thrown on OutOfGas or revert() without any data error PossibleOutOfGas(); /// @notice Thrown on reentering token transfer while notification are being dispatched error NotificationDispatchError(); /// @notice Thrown on reentering error ReentrancyError(); /// @notice Thrown when delegatecall on claiming rewards failed error ClaimRewardsFailed(); /// @notice Thrown when the address passed is the zero address. error ZeroAddress(); /// @notice Thrown when the result of a conversion is zero. error ZeroAssets(); /// @notice Thrown when the result of a conversion is zero. error ZeroShares(); /// @notice Thrown when the caller doesn't have the curator role. error NotCuratorRole(); /// @notice Thrown when the caller doesn't have the allocator role. error NotAllocatorRole(); /// @notice Thrown when the caller doesn't have the guardian role. error NotGuardianRole(); /// @notice Thrown when the caller doesn't have the curator nor the guardian role. error NotCuratorNorGuardianRole(); /// @notice Thrown when the `market` cannot be set in the supply queue. error UnauthorizedMarket(IERC4626 market); /// @notice Thrown when submitting a cap for a `market` whose loan token does not correspond to the underlying. /// asset. error InconsistentAsset(IERC4626 market); /// @notice Thrown when the supply cap has been exceeded on `market` during a reallocation of funds. error SupplyCapExceeded(IERC4626 market); /// @notice Thrown when the fee to set exceeds the maximum fee. error MaxFeeExceeded(); /// @notice Thrown when the value is already set. error AlreadySet(); /// @notice Thrown when a value is already pending. error AlreadyPending(); /// @notice Thrown when submitting the removal of a market when there is a cap already pending on that market. error PendingCap(IERC4626 market); /// @notice Thrown when submitting a cap for a market with a pending removal. error PendingRemoval(); /// @notice Thrown when submitting a market removal for a market with a non zero cap. error NonZeroCap(); /// @notice Thrown when `market` is a duplicate in the new withdraw queue to set. error DuplicateMarket(IERC4626 market); /// @notice Thrown when `market` is missing in the updated withdraw queue and the market has a non-zero cap set. error InvalidMarketRemovalNonZeroCap(IERC4626 market); /// @notice Thrown when `market` is missing in the updated withdraw queue and the market has a non-zero supply. error InvalidMarketRemovalNonZeroSupply(IERC4626 market); /// @notice Thrown when `market` is missing in the updated withdraw queue and the market is not yet disabled. error InvalidMarketRemovalTimelockNotElapsed(IERC4626 market); /// @notice Thrown when there's no pending value to set. error NoPendingValue(); /// @notice Thrown when the requested liquidity cannot be withdrawn from Morpho. error NotEnoughLiquidity(); /// @notice Thrown when interacting with a non previously enabled `market`. /// @notice Thrown when attempting to reallocate or set flows to non-zero values for a non-enabled market. error MarketNotEnabled(IERC4626 market); /// @notice Thrown when the submitted timelock is above the max timelock. error AboveMaxTimelock(); /// @notice Thrown when the submitted timelock is below the min timelock. error BelowMinTimelock(); /// @notice Thrown when the timelock is not elapsed. error TimelockNotElapsed(); /// @notice Thrown when too many markets are in the withdraw queue. error MaxQueueLengthExceeded(); /// @notice Thrown when setting the fee to a non zero value while the fee recipient is the zero address. error ZeroFeeRecipient(); /// @notice Thrown when the amount withdrawn is not exactly the amount supplied. error InconsistentReallocation(); /// @notice Thrown when all caps have been reached. error AllCapsReached(); /// @notice Thrown when the `msg.sender` is not the admin nor the owner of the vault. error NotAdminNorVaultOwner(); /// @notice Thrown when the reallocation fee given is wrong. error IncorrectFee(); /// @notice Thrown when `withdrawals` is empty. error EmptyWithdrawals(); /// @notice Thrown when `withdrawals` contains a duplicate or is not sorted. error InconsistentWithdrawals(); /// @notice Thrown when the deposit market is in `withdrawals`. error DepositMarketInWithdrawals(); /// @notice Thrown when attempting to withdraw zero of a market. error WithdrawZero(IERC4626 market); /// @notice Thrown when attempting to set max inflow/outflow above the MAX_SETTABLE_FLOW_CAP. error MaxSettableFlowCapExceeded(); /// @notice Thrown when attempting to withdraw more than the available supply of a market. error NotEnoughSupply(IERC4626 market); /// @notice Thrown when attempting to withdraw more than the max outflow of a market. error MaxOutflowExceeded(IERC4626 market); /// @notice Thrown when attempting to supply more than the max inflow of a market. error MaxInflowExceeded(IERC4626 market); /// @notice Thrown when projected withdraw is much less than what user deposit. error AssetLoss(uint256 loss); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.28; import {IERC4626} from "openzeppelin5/interfaces/IERC4626.sol"; import {UtilsLib} from "morpho-blue/libraries/UtilsLib.sol"; import {ErrorsLib} from "./ErrorsLib.sol"; import {EventsLib} from "./EventsLib.sol"; library SiloVaultActionsLib { function setIsAllocator( address _newAllocator, bool _newIsAllocator, mapping(address => bool) storage _isAllocator ) external { if (_isAllocator[_newAllocator] == _newIsAllocator) revert ErrorsLib.AlreadySet(); _isAllocator[_newAllocator] = _newIsAllocator; emit EventsLib.SetIsAllocator(_newAllocator, _newIsAllocator); } /// @dev Simulates a withdraw of `assets` from ERC4626 vault. /// @return The remaining assets to be withdrawn. function simulateWithdrawERC4626( uint256 _assets, IERC4626[] storage _withdrawQueue ) external view returns (uint256) { for (uint256 i; i < _withdrawQueue.length; ++i) { IERC4626 market = _withdrawQueue[i]; _assets = UtilsLib.zeroFloorSub(_assets, market.maxWithdraw(address(this))); if (_assets == 0) break; } return _assets; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable2Step.sol) pragma solidity ^0.8.20; import {OwnableUpgradeable} from "./OwnableUpgradeable.sol"; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Contract module which provides access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * This extension of the {Ownable} contract includes a two-step mechanism to transfer * ownership, where the new owner must call {acceptOwnership} in order to replace the * old one. This can help prevent common mistakes, such as transfers of ownership to * incorrect accounts, or to contracts that are unable to interact with the * permission system. * * The initial owner is specified at deployment time in the constructor for `Ownable`. This * can later be changed with {transferOwnership} and {acceptOwnership}. * * This module is used through inheritance. It will make available all functions * from parent (Ownable). */ abstract contract Ownable2StepUpgradeable is Initializable, OwnableUpgradeable { /// @custom:storage-location erc7201:openzeppelin.storage.Ownable2Step struct Ownable2StepStorage { address _pendingOwner; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable2Step")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant Ownable2StepStorageLocation = 0x237e158222e3e6968b72b9db0d8043aacf074ad9f650f0d1606b4d82ee432c00; function _getOwnable2StepStorage() private pure returns (Ownable2StepStorage storage $) { assembly { $.slot := Ownable2StepStorageLocation } } event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner); function __Ownable2Step_init() internal onlyInitializing { } function __Ownable2Step_init_unchained() internal onlyInitializing { } /** * @dev Returns the address of the pending owner. */ function pendingOwner() public view virtual returns (address) { Ownable2StepStorage storage $ = _getOwnable2StepStorage(); return $._pendingOwner; } /** * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one. * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual override onlyOwner { Ownable2StepStorage storage $ = _getOwnable2StepStorage(); $._pendingOwner = newOwner; emit OwnershipTransferStarted(owner(), newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner. * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual override { Ownable2StepStorage storage $ = _getOwnable2StepStorage(); delete $._pendingOwner; super._transferOwnership(newOwner); } /** * @dev The new owner accepts the ownership transfer. */ function acceptOwnership() public virtual { address sender = _msgSender(); if (pendingOwner() != sender) { revert OwnableUnauthorizedAccount(sender); } _transferOwnership(sender); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/structs/EnumerableSet.sol) // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js. pragma solidity ^0.8.20; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ```solidity * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure * unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an * array of EnumerableSet. * ==== */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position is the index of the value in the `values` array plus 1. // Position 0 is used to mean a value is not in the set. mapping(bytes32 value => uint256) _positions; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._positions[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We cache the value's position to prevent multiple reads from the same storage slot uint256 position = set._positions[value]; if (position != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 valueIndex = position - 1; uint256 lastIndex = set._values.length - 1; if (valueIndex != lastIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the lastValue to the index where the value to delete is set._values[valueIndex] = lastValue; // Update the tracked position of the lastValue (that was just moved) set._positions[lastValue] = position; } // Delete the slot where the moved value was stored set._values.pop(); // Delete the tracked position for the deleted slot delete set._positions[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._positions[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { bytes32[] memory store = _values(set._inner); bytes32[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values in the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC-20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[ERC-2612]. * * Adds the {permit} method, which can be used to change an account's ERC-20 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. * * ==== Security Considerations * * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be * considered as an intention to spend the allowance in any specific way. The second is that because permits have * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be * generally recommended is: * * ```solidity * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public { * try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {} * doThing(..., value); * } * * function doThing(..., uint256 value) public { * token.safeTransferFrom(msg.sender, address(this), value); * ... * } * ``` * * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also * {SafeERC20-safeTransferFrom}). * * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so * contracts should have entry points that don't rely on permit. */ 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]. * * CAUTION: See Security Considerations above. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.20; /** * @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 } /** * @dev The signature derives the `address(0)`. */ error ECDSAInvalidSignature(); /** * @dev The signature has an invalid length. */ error ECDSAInvalidSignatureLength(uint256 length); /** * @dev The signature has an S value that is in the upper half order. */ error ECDSAInvalidSignatureS(bytes32 s); /** * @dev Returns the address that signed a hashed message (`hash`) with `signature` or an error. This will not * return address(0) without also returning an error description. Errors are documented using an enum (error type) * and a bytes32 providing additional information about the error. * * If no error is returned, then the address can be used for verification purposes. * * The `ecrecover` EVM precompile 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 {MessageHashUtils-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] */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError, bytes32) { 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 { return (address(0), RecoverError.InvalidSignatureLength, bytes32(signature.length)); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM precompile 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 {MessageHashUtils-toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, signature); _throwError(error, errorArg); 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[ERC-2098 short signatures] */ function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError, bytes32) { unchecked { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); // We do not check for an overflow here since the shift operation results in 0 or 1. 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. */ function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) { (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, r, vs); _throwError(error, errorArg); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError, bytes32) { // 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, s); } // 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, bytes32(0)); } return (signer, RecoverError.NoError, bytes32(0)); } /** * @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, bytes32 errorArg) = tryRecover(hash, v, r, s); _throwError(error, errorArg); return recovered; } /** * @dev Optionally reverts with the corresponding custom error according to the `error` argument provided. */ function _throwError(RecoverError error, bytes32 errorArg) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert ECDSAInvalidSignature(); } else if (error == RecoverError.InvalidSignatureLength) { revert ECDSAInvalidSignatureLength(uint256(errorArg)); } else if (error == RecoverError.InvalidSignatureS) { revert ECDSAInvalidSignatureS(errorArg); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/EIP712.sol) pragma solidity ^0.8.20; import {MessageHashUtils} from "./MessageHashUtils.sol"; import {ShortStrings, ShortString} from "../ShortStrings.sol"; import {IERC5267} from "../../interfaces/IERC5267.sol"; /** * @dev https://eips.ethereum.org/EIPS/eip-712[EIP-712] is a standard for hashing and signing of typed structured data. * * The encoding scheme specified in the EIP requires a domain separator and a hash of the typed structured data, whose * encoding is very generic and therefore its 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 order to * produce the hash of their typed data 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]. * * NOTE: In the upgradeable version of this contract, the cached values will correspond to the address, and the domain * separator of the implementation contract. This will cause the {_domainSeparatorV4} function to always rebuild the * separator from the immutable values, which is cheaper than accessing a cached version in cold storage. * * @custom:oz-upgrades-unsafe-allow state-variable-immutable */ abstract contract EIP712 is IERC5267 { using ShortStrings for *; bytes32 private constant TYPE_HASH = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"); // 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 _cachedDomainSeparator; uint256 private immutable _cachedChainId; address private immutable _cachedThis; bytes32 private immutable _hashedName; bytes32 private immutable _hashedVersion; ShortString private immutable _name; ShortString private immutable _version; string private _nameFallback; string private _versionFallback; /** * @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) { _name = name.toShortStringWithFallback(_nameFallback); _version = version.toShortStringWithFallback(_versionFallback); _hashedName = keccak256(bytes(name)); _hashedVersion = keccak256(bytes(version)); _cachedChainId = block.chainid; _cachedDomainSeparator = _buildDomainSeparator(); _cachedThis = address(this); } /** * @dev Returns the domain separator for the current chain. */ function _domainSeparatorV4() internal view returns (bytes32) { if (address(this) == _cachedThis && block.chainid == _cachedChainId) { return _cachedDomainSeparator; } else { return _buildDomainSeparator(); } } function _buildDomainSeparator() private view returns (bytes32) { return keccak256(abi.encode(TYPE_HASH, _hashedName, _hashedVersion, 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 MessageHashUtils.toTypedDataHash(_domainSeparatorV4(), structHash); } /** * @dev See {IERC-5267}. */ function eip712Domain() public view virtual returns ( bytes1 fields, string memory name, string memory version, uint256 chainId, address verifyingContract, bytes32 salt, uint256[] memory extensions ) { return ( hex"0f", // 01111 _EIP712Name(), _EIP712Version(), block.chainid, address(this), bytes32(0), new uint256[](0) ); } /** * @dev The name parameter for the EIP712 domain. * * NOTE: By default this function reads _name which is an immutable value. * It only reads from storage if necessary (in case the value is too large to fit in a ShortString). */ // solhint-disable-next-line func-name-mixedcase function _EIP712Name() internal view returns (string memory) { return _name.toStringWithFallback(_nameFallback); } /** * @dev The version parameter for the EIP712 domain. * * NOTE: By default this function reads _version which is an immutable value. * It only reads from storage if necessary (in case the value is too large to fit in a ShortString). */ // solhint-disable-next-line func-name-mixedcase function _EIP712Version() internal view returns (string memory) { return _version.toStringWithFallback(_versionFallback); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Nonces.sol) pragma solidity ^0.8.20; /** * @dev Provides tracking nonces for addresses. Nonces will only increment. */ abstract contract Nonces { /** * @dev The nonce used for an `account` is not the expected current nonce. */ error InvalidAccountNonce(address account, uint256 currentNonce); mapping(address account => uint256) private _nonces; /** * @dev Returns the next unused nonce for an address. */ function nonces(address owner) public view virtual returns (uint256) { return _nonces[owner]; } /** * @dev Consumes a nonce. * * Returns the current value and increments nonce. */ function _useNonce(address owner) internal virtual returns (uint256) { // For each account, the nonce has an initial value of 0, can only be incremented by one, and cannot be // decremented or reset. This guarantees that the nonce never overflows. unchecked { // It is important to do x++ and not ++x here. return _nonces[owner]++; } } /** * @dev Same as {_useNonce} but checking that `nonce` is the next valid for `owner`. */ function _useCheckedNonce(address owner, uint256 nonce) internal virtual { uint256 current = _useNonce(owner); if (nonce != current) { revert InvalidAccountNonce(owner, current); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC-20 standard as defined in the ERC. */ 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 value of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the value of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool); /** * @dev Moves a `value` amount of tokens from `from` to `to` using the * allowance mechanism. `value` 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 value) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC-20 standard. */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol) pragma solidity ^0.8.20; import {Panic} from "../Panic.sol"; import {SafeCast} from "./SafeCast.sol"; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Floor, // Toward negative infinity Ceil, // Toward positive infinity Trunc, // Toward zero Expand // Away from zero } /** * @dev Returns the addition of two unsigned integers, with an success flag (no overflow). */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the subtraction of two unsigned integers, with an success flag (no overflow). */ function trySub(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an success flag (no overflow). */ function tryMul(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a success flag (no division by zero). */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a success flag (no division by zero). */ function tryMod(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds towards infinity instead * of rounding towards zero. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { if (b == 0) { // Guarantee the same behavior as in a regular Solidity division. Panic.panic(Panic.DIVISION_BY_ZERO); } // The following calculation ensures accurate ceiling division without overflow. // Since a is non-zero, (a - 1) / b will not overflow. // The largest possible result occurs when (a - 1) / b is type(uint256).max, // but the largest value we can obtain is type(uint256).max - 1, which happens // when a = type(uint256).max and b = 1. unchecked { return a == 0 ? 0 : (a - 1) / b + 1; } } /** * @dev Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or * denominator == 0. * * Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by * Uniswap Labs also under MIT license. */ function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2²⁵⁶ and mod 2²⁵⁶ - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2²⁵⁶ + prod0. uint256 prod0 = x * y; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { // Solidity will revert if denominator == 0, unlike the div opcode on its own. // The surrounding unchecked block does not change this fact. // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic. return prod0 / denominator; } // Make sure the result is less than 2²⁵⁶. Also prevents denominator == 0. if (denominator <= prod1) { Panic.panic(denominator == 0 ? Panic.DIVISION_BY_ZERO : Panic.UNDER_OVERFLOW); } /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. // Always >= 1. See https://cs.stackexchange.com/q/138556/92363. uint256 twos = denominator & (0 - denominator); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2²⁵⁶ / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2²⁵⁶. Now that denominator is an odd number, it has an inverse modulo 2²⁵⁶ such // that denominator * inv ≡ 1 mod 2²⁵⁶. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv ≡ 1 mod 2⁴. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also // works in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2⁸ inverse *= 2 - denominator * inverse; // inverse mod 2¹⁶ inverse *= 2 - denominator * inverse; // inverse mod 2³² inverse *= 2 - denominator * inverse; // inverse mod 2⁶⁴ inverse *= 2 - denominator * inverse; // inverse mod 2¹²⁸ inverse *= 2 - denominator * inverse; // inverse mod 2²⁵⁶ // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2²⁵⁶. Since the preconditions guarantee that the outcome is // less than 2²⁵⁶, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @dev Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) { return mulDiv(x, y, denominator) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0); } /** * @dev Calculate the modular multiplicative inverse of a number in Z/nZ. * * If n is a prime, then Z/nZ is a field. In that case all elements are inversible, expect 0. * If n is not a prime, then Z/nZ is not a field, and some elements might not be inversible. * * If the input value is not inversible, 0 is returned. * * NOTE: If you know for sure that n is (big) a prime, it may be cheaper to use Ferma's little theorem and get the * inverse using `Math.modExp(a, n - 2, n)`. */ function invMod(uint256 a, uint256 n) internal pure returns (uint256) { unchecked { if (n == 0) return 0; // The inverse modulo is calculated using the Extended Euclidean Algorithm (iterative version) // Used to compute integers x and y such that: ax + ny = gcd(a, n). // When the gcd is 1, then the inverse of a modulo n exists and it's x. // ax + ny = 1 // ax = 1 + (-y)n // ax ≡ 1 (mod n) # x is the inverse of a modulo n // If the remainder is 0 the gcd is n right away. uint256 remainder = a % n; uint256 gcd = n; // Therefore the initial coefficients are: // ax + ny = gcd(a, n) = n // 0a + 1n = n int256 x = 0; int256 y = 1; while (remainder != 0) { uint256 quotient = gcd / remainder; (gcd, remainder) = ( // The old remainder is the next gcd to try. remainder, // Compute the next remainder. // Can't overflow given that (a % gcd) * (gcd // (a % gcd)) <= gcd // where gcd is at most n (capped to type(uint256).max) gcd - remainder * quotient ); (x, y) = ( // Increment the coefficient of a. y, // Decrement the coefficient of n. // Can overflow, but the result is casted to uint256 so that the // next value of y is "wrapped around" to a value between 0 and n - 1. x - y * int256(quotient) ); } if (gcd != 1) return 0; // No inverse exists. return x < 0 ? (n - uint256(-x)) : uint256(x); // Wrap the result if it's negative. } } /** * @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m) * * Requirements: * - modulus can't be zero * - underlying staticcall to precompile must succeed * * IMPORTANT: The result is only valid if the underlying call succeeds. When using this function, make * sure the chain you're using it on supports the precompiled contract for modular exponentiation * at address 0x05 as specified in https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, * the underlying function will succeed given the lack of a revert, but the result may be incorrectly * interpreted as 0. */ function modExp(uint256 b, uint256 e, uint256 m) internal view returns (uint256) { (bool success, uint256 result) = tryModExp(b, e, m); if (!success) { Panic.panic(Panic.DIVISION_BY_ZERO); } return result; } /** * @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m). * It includes a success flag indicating if the operation succeeded. Operation will be marked has failed if trying * to operate modulo 0 or if the underlying precompile reverted. * * IMPORTANT: The result is only valid if the success flag is true. When using this function, make sure the chain * you're using it on supports the precompiled contract for modular exponentiation at address 0x05 as specified in * https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, the underlying function will succeed given the lack * of a revert, but the result may be incorrectly interpreted as 0. */ function tryModExp(uint256 b, uint256 e, uint256 m) internal view returns (bool success, uint256 result) { if (m == 0) return (false, 0); /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) // | Offset | Content | Content (Hex) | // |-----------|------------|--------------------------------------------------------------------| // | 0x00:0x1f | size of b | 0x0000000000000000000000000000000000000000000000000000000000000020 | // | 0x20:0x3f | size of e | 0x0000000000000000000000000000000000000000000000000000000000000020 | // | 0x40:0x5f | size of m | 0x0000000000000000000000000000000000000000000000000000000000000020 | // | 0x60:0x7f | value of b | 0x<.............................................................b> | // | 0x80:0x9f | value of e | 0x<.............................................................e> | // | 0xa0:0xbf | value of m | 0x<.............................................................m> | mstore(ptr, 0x20) mstore(add(ptr, 0x20), 0x20) mstore(add(ptr, 0x40), 0x20) mstore(add(ptr, 0x60), b) mstore(add(ptr, 0x80), e) mstore(add(ptr, 0xa0), m) // Given the result < m, it's guaranteed to fit in 32 bytes, // so we can use the memory scratch space located at offset 0. success := staticcall(gas(), 0x05, ptr, 0xc0, 0x00, 0x20) result := mload(0x00) } } /** * @dev Variant of {modExp} that supports inputs of arbitrary length. */ function modExp(bytes memory b, bytes memory e, bytes memory m) internal view returns (bytes memory) { (bool success, bytes memory result) = tryModExp(b, e, m); if (!success) { Panic.panic(Panic.DIVISION_BY_ZERO); } return result; } /** * @dev Variant of {tryModExp} that supports inputs of arbitrary length. */ function tryModExp( bytes memory b, bytes memory e, bytes memory m ) internal view returns (bool success, bytes memory result) { if (_zeroBytes(m)) return (false, new bytes(0)); uint256 mLen = m.length; // Encode call args in result and move the free memory pointer result = abi.encodePacked(b.length, e.length, mLen, b, e, m); /// @solidity memory-safe-assembly assembly { let dataPtr := add(result, 0x20) // Write result on top of args to avoid allocating extra memory. success := staticcall(gas(), 0x05, dataPtr, mload(result), dataPtr, mLen) // Overwrite the length. // result.length > returndatasize() is guaranteed because returndatasize() == m.length mstore(result, mLen) // Set the memory pointer after the returned data. mstore(0x40, add(dataPtr, mLen)) } } /** * @dev Returns whether the provided byte array is zero. */ function _zeroBytes(bytes memory byteArray) private pure returns (bool) { for (uint256 i = 0; i < byteArray.length; ++i) { if (byteArray[i] != 0) { return false; } } return true; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded * towards zero. * * This method is based on Newton's method for computing square roots; the algorithm is restricted to only * using integer operations. */ function sqrt(uint256 a) internal pure returns (uint256) { unchecked { // Take care of easy edge cases when a == 0 or a == 1 if (a <= 1) { return a; } // In this function, we use Newton's method to get a root of `f(x) := x² - a`. It involves building a // sequence x_n that converges toward sqrt(a). For each iteration x_n, we also define the error between // the current value as `ε_n = | x_n - sqrt(a) |`. // // For our first estimation, we consider `e` the smallest power of 2 which is bigger than the square root // of the target. (i.e. `2**(e-1) ≤ sqrt(a) < 2**e`). We know that `e ≤ 128` because `(2¹²⁸)² = 2²⁵⁶` is // bigger than any uint256. // // By noticing that // `2**(e-1) ≤ sqrt(a) < 2**e → (2**(e-1))² ≤ a < (2**e)² → 2**(2*e-2) ≤ a < 2**(2*e)` // we can deduce that `e - 1` is `log2(a) / 2`. We can thus compute `x_n = 2**(e-1)` using a method similar // to the msb function. uint256 aa = a; uint256 xn = 1; if (aa >= (1 << 128)) { aa >>= 128; xn <<= 64; } if (aa >= (1 << 64)) { aa >>= 64; xn <<= 32; } if (aa >= (1 << 32)) { aa >>= 32; xn <<= 16; } if (aa >= (1 << 16)) { aa >>= 16; xn <<= 8; } if (aa >= (1 << 8)) { aa >>= 8; xn <<= 4; } if (aa >= (1 << 4)) { aa >>= 4; xn <<= 2; } if (aa >= (1 << 2)) { xn <<= 1; } // We now have x_n such that `x_n = 2**(e-1) ≤ sqrt(a) < 2**e = 2 * x_n`. This implies ε_n ≤ 2**(e-1). // // We can refine our estimation by noticing that the middle of that interval minimizes the error. // If we move x_n to equal 2**(e-1) + 2**(e-2), then we reduce the error to ε_n ≤ 2**(e-2). // This is going to be our x_0 (and ε_0) xn = (3 * xn) >> 1; // ε_0 := | x_0 - sqrt(a) | ≤ 2**(e-2) // From here, Newton's method give us: // x_{n+1} = (x_n + a / x_n) / 2 // // One should note that: // x_{n+1}² - a = ((x_n + a / x_n) / 2)² - a // = ((x_n² + a) / (2 * x_n))² - a // = (x_n⁴ + 2 * a * x_n² + a²) / (4 * x_n²) - a // = (x_n⁴ + 2 * a * x_n² + a² - 4 * a * x_n²) / (4 * x_n²) // = (x_n⁴ - 2 * a * x_n² + a²) / (4 * x_n²) // = (x_n² - a)² / (2 * x_n)² // = ((x_n² - a) / (2 * x_n))² // ≥ 0 // Which proves that for all n ≥ 1, sqrt(a) ≤ x_n // // This gives us the proof of quadratic convergence of the sequence: // ε_{n+1} = | x_{n+1} - sqrt(a) | // = | (x_n + a / x_n) / 2 - sqrt(a) | // = | (x_n² + a - 2*x_n*sqrt(a)) / (2 * x_n) | // = | (x_n - sqrt(a))² / (2 * x_n) | // = | ε_n² / (2 * x_n) | // = ε_n² / | (2 * x_n) | // // For the first iteration, we have a special case where x_0 is known: // ε_1 = ε_0² / | (2 * x_0) | // ≤ (2**(e-2))² / (2 * (2**(e-1) + 2**(e-2))) // ≤ 2**(2*e-4) / (3 * 2**(e-1)) // ≤ 2**(e-3) / 3 // ≤ 2**(e-3-log2(3)) // ≤ 2**(e-4.5) // // For the following iterations, we use the fact that, 2**(e-1) ≤ sqrt(a) ≤ x_n: // ε_{n+1} = ε_n² / | (2 * x_n) | // ≤ (2**(e-k))² / (2 * 2**(e-1)) // ≤ 2**(2*e-2*k) / 2**e // ≤ 2**(e-2*k) xn = (xn + a / xn) >> 1; // ε_1 := | x_1 - sqrt(a) | ≤ 2**(e-4.5) -- special case, see above xn = (xn + a / xn) >> 1; // ε_2 := | x_2 - sqrt(a) | ≤ 2**(e-9) -- general case with k = 4.5 xn = (xn + a / xn) >> 1; // ε_3 := | x_3 - sqrt(a) | ≤ 2**(e-18) -- general case with k = 9 xn = (xn + a / xn) >> 1; // ε_4 := | x_4 - sqrt(a) | ≤ 2**(e-36) -- general case with k = 18 xn = (xn + a / xn) >> 1; // ε_5 := | x_5 - sqrt(a) | ≤ 2**(e-72) -- general case with k = 36 xn = (xn + a / xn) >> 1; // ε_6 := | x_6 - sqrt(a) | ≤ 2**(e-144) -- general case with k = 72 // Because e ≤ 128 (as discussed during the first estimation phase), we know have reached a precision // ε_6 ≤ 2**(e-144) < 1. Given we're operating on integers, then we can ensure that xn is now either // sqrt(a) or sqrt(a) + 1. return xn - SafeCast.toUint(xn > a / xn); } } /** * @dev Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && result * result < a); } } /** * @dev Return the log in base 2 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; uint256 exp; unchecked { exp = 128 * SafeCast.toUint(value > (1 << 128) - 1); value >>= exp; result += exp; exp = 64 * SafeCast.toUint(value > (1 << 64) - 1); value >>= exp; result += exp; exp = 32 * SafeCast.toUint(value > (1 << 32) - 1); value >>= exp; result += exp; exp = 16 * SafeCast.toUint(value > (1 << 16) - 1); value >>= exp; result += exp; exp = 8 * SafeCast.toUint(value > (1 << 8) - 1); value >>= exp; result += exp; exp = 4 * SafeCast.toUint(value > (1 << 4) - 1); value >>= exp; result += exp; exp = 2 * SafeCast.toUint(value > (1 << 2) - 1); value >>= exp; result += exp; result += SafeCast.toUint(value > 1); } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << result < value); } } /** * @dev Return the log in base 10 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10 ** 64) { value /= 10 ** 64; result += 64; } if (value >= 10 ** 32) { value /= 10 ** 32; result += 32; } if (value >= 10 ** 16) { value /= 10 ** 16; result += 16; } if (value >= 10 ** 8) { value /= 10 ** 8; result += 8; } if (value >= 10 ** 4) { value /= 10 ** 4; result += 4; } if (value >= 10 ** 2) { value /= 10 ** 2; result += 2; } if (value >= 10 ** 1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 10 ** result < value); } } /** * @dev Return the log in base 256 of a positive value rounded towards zero. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; uint256 isGt; unchecked { isGt = SafeCast.toUint(value > (1 << 128) - 1); value >>= isGt * 128; result += isGt * 16; isGt = SafeCast.toUint(value > (1 << 64) - 1); value >>= isGt * 64; result += isGt * 8; isGt = SafeCast.toUint(value > (1 << 32) - 1); value >>= isGt * 32; result += isGt * 4; isGt = SafeCast.toUint(value > (1 << 16) - 1); value >>= isGt * 16; result += isGt * 2; result += SafeCast.toUint(value > (1 << 8) - 1); } return result; } /** * @dev Return the log in base 256, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << (result << 3) < value); } } /** * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers. */ function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) { return uint8(rounding) % 2 == 1; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol) pragma solidity ^0.8.20; import {Context} from "../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. * * The initial owner is set to the address provided by the deployer. 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; /** * @dev The caller account is not authorized to perform an operation. */ error OwnableUnauthorizedAccount(address account); /** * @dev The owner is not a valid owner account. (eg. `address(0)`) */ error OwnableInvalidOwner(address owner); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the address provided by the deployer as the initial owner. */ constructor(address initialOwner) { if (initialOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(initialOwner); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { if (owner() != _msgSender()) { revert OwnableUnauthorizedAccount(_msgSender()); } } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { if (newOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _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 v5.0.0) (utils/Address.sol) pragma solidity ^0.8.20; import {Errors} from "./Errors.sol"; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev There's no code at `target` (it is not a contract). */ error AddressEmptyCode(address target); /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { if (address(this).balance < amount) { revert Errors.InsufficientBalance(address(this).balance, amount); } (bool success, ) = recipient.call{value: amount}(""); if (!success) { revert Errors.FailedCall(); } } /** * @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 or custom error, it is bubbled * up by this function (like regular Solidity function calls). However, if * the call reverted with no returned reason, this function reverts with a * {Errors.FailedCall} error. * * 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. */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0); } /** * @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`. */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { if (address(this).balance < value) { revert Errors.InsufficientBalance(address(this).balance, value); } (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target * was not a contract or bubbling up the revert reason (falling back to {Errors.FailedCall}) in case * of an unsuccessful call. */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata ) internal view returns (bytes memory) { if (!success) { _revert(returndata); } else { // only check if target is a contract if the call was successful and the return data is empty // otherwise we already know that it was a contract if (returndata.length == 0 && target.code.length == 0) { revert AddressEmptyCode(target); } return returndata; } } /** * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the * revert reason or with a default {Errors.FailedCall} error. */ function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) { if (!success) { _revert(returndata); } else { return returndata; } } /** * @dev Reverts with returndata if present. Otherwise reverts with {Errors.FailedCall}. */ function _revert(bytes memory returndata) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert Errors.FailedCall(); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol) pragma solidity ^0.8.20; /** * @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; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol) pragma solidity ^0.8.20; /** * @dev Standard ERC-20 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-20 tokens. */ interface IERC20Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC20InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC20InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers. * @param spender Address that may be allowed to operate on tokens without being their owner. * @param allowance Amount of tokens a `spender` is allowed to operate with. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC20InvalidApprover(address approver); /** * @dev Indicates a failure with the `spender` to be approved. Used in approvals. * @param spender Address that may be allowed to operate on tokens without being their owner. */ error ERC20InvalidSpender(address spender); } /** * @dev Standard ERC-721 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-721 tokens. */ interface IERC721Errors { /** * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in ERC-20. * Used in balance queries. * @param owner Address of the current owner of a token. */ error ERC721InvalidOwner(address owner); /** * @dev Indicates a `tokenId` whose `owner` is the zero address. * @param tokenId Identifier number of a token. */ error ERC721NonexistentToken(uint256 tokenId); /** * @dev Indicates an error related to the ownership over a particular token. Used in transfers. * @param sender Address whose tokens are being transferred. * @param tokenId Identifier number of a token. * @param owner Address of the current owner of a token. */ error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC721InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC721InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param tokenId Identifier number of a token. */ error ERC721InsufficientApproval(address operator, uint256 tokenId); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC721InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC721InvalidOperator(address operator); } /** * @dev Standard ERC-1155 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-1155 tokens. */ interface IERC1155Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. * @param tokenId Identifier number of a token. */ error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC1155InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC1155InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param owner Address of the current owner of a token. */ error ERC1155MissingApprovalForAll(address operator, address owner); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC1155InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC1155InvalidOperator(address operator); /** * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation. * Used in batch transfers. * @param idsLength Length of the array of token identifiers * @param valuesLength Length of the array of token amounts */ error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC1363.sol) pragma solidity ^0.8.20; import {IERC20} from "./IERC20.sol"; import {IERC165} from "./IERC165.sol"; /** * @title IERC1363 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363]. * * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction. */ interface IERC1363 is IERC20, IERC165 { /* * Note: the ERC-165 identifier for this interface is 0xb0202a11. * 0xb0202a11 === * bytes4(keccak256('transferAndCall(address,uint256)')) ^ * bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^ * bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^ * bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^ * bytes4(keccak256('approveAndCall(address,uint256)')) ^ * bytes4(keccak256('approveAndCall(address,uint256,bytes)')) */ /** * @dev Moves a `value` amount of tokens from the caller's account to `to` * and then calls {IERC1363Receiver-onTransferReceived} on `to`. * @param to The address which you want to transfer to. * @param value The amount of tokens to be transferred. * @return A boolean value indicating whether the operation succeeded unless throwing. */ function transferAndCall(address to, uint256 value) external returns (bool); /** * @dev Moves a `value` amount of tokens from the caller's account to `to` * and then calls {IERC1363Receiver-onTransferReceived} on `to`. * @param to The address which you want to transfer to. * @param value The amount of tokens to be transferred. * @param data Additional data with no specified format, sent in call to `to`. * @return A boolean value indicating whether the operation succeeded unless throwing. */ function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool); /** * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism * and then calls {IERC1363Receiver-onTransferReceived} on `to`. * @param from The address which you want to send tokens from. * @param to The address which you want to transfer to. * @param value The amount of tokens to be transferred. * @return A boolean value indicating whether the operation succeeded unless throwing. */ function transferFromAndCall(address from, address to, uint256 value) external returns (bool); /** * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism * and then calls {IERC1363Receiver-onTransferReceived} on `to`. * @param from The address which you want to send tokens from. * @param to The address which you want to transfer to. * @param value The amount of tokens to be transferred. * @param data Additional data with no specified format, sent in call to `to`. * @return A boolean value indicating whether the operation succeeded unless throwing. */ function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool); /** * @dev Sets a `value` amount of tokens as the allowance of `spender` over the * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`. * @param spender The address which will spend the funds. * @param value The amount of tokens to be spent. * @return A boolean value indicating whether the operation succeeded unless throwing. */ function approveAndCall(address spender, uint256 value) external returns (bool); /** * @dev Sets a `value` amount of tokens as the allowance of `spender` over the * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`. * @param spender The address which will spend the funds. * @param value The amount of tokens to be spent. * @param data Additional data with no specified format, sent in call to `spender`. * @return A boolean value indicating whether the operation succeeded unless throwing. */ function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; /// @title ErrorsLib /// @author Morpho Labs /// @custom:contact [email protected] /// @notice Library exposing error messages. library ErrorsLib { /// @notice Thrown when the caller is not the owner. string internal constant NOT_OWNER = "not owner"; /// @notice Thrown when the LLTV to enable exceeds the maximum LLTV. string internal constant MAX_LLTV_EXCEEDED = "max LLTV exceeded"; /// @notice Thrown when the fee to set exceeds the maximum fee. string internal constant MAX_FEE_EXCEEDED = "max fee exceeded"; /// @notice Thrown when the value is already set. string internal constant ALREADY_SET = "already set"; /// @notice Thrown when the IRM is not enabled at market creation. string internal constant IRM_NOT_ENABLED = "IRM not enabled"; /// @notice Thrown when the LLTV is not enabled at market creation. string internal constant LLTV_NOT_ENABLED = "LLTV not enabled"; /// @notice Thrown when the market is already created. string internal constant MARKET_ALREADY_CREATED = "market already created"; /// @notice Thrown when a token to transfer doesn't have code. string internal constant NO_CODE = "no code"; /// @notice Thrown when the market is not created. string internal constant MARKET_NOT_CREATED = "market not created"; /// @notice Thrown when not exactly one of the input amount is zero. string internal constant INCONSISTENT_INPUT = "inconsistent input"; /// @notice Thrown when zero assets is passed as input. string internal constant ZERO_ASSETS = "zero assets"; /// @notice Thrown when a zero address is passed as input. string internal constant ZERO_ADDRESS = "zero address"; /// @notice Thrown when the caller is not authorized to conduct an action. string internal constant UNAUTHORIZED = "unauthorized"; /// @notice Thrown when the collateral is insufficient to `borrow` or `withdrawCollateral`. string internal constant INSUFFICIENT_COLLATERAL = "insufficient collateral"; /// @notice Thrown when the liquidity is insufficient to `withdraw` or `borrow`. string internal constant INSUFFICIENT_LIQUIDITY = "insufficient liquidity"; /// @notice Thrown when the position to liquidate is healthy. string internal constant HEALTHY_POSITION = "position is healthy"; /// @notice Thrown when the authorization signature is invalid. string internal constant INVALID_SIGNATURE = "invalid signature"; /// @notice Thrown when the authorization signature is expired. string internal constant SIGNATURE_EXPIRED = "signature expired"; /// @notice Thrown when the nonce is invalid. string internal constant INVALID_NONCE = "invalid nonce"; /// @notice Thrown when a token transfer reverted. string internal constant TRANSFER_REVERTED = "transfer reverted"; /// @notice Thrown when a token transfer returned false. string internal constant TRANSFER_RETURNED_FALSE = "transfer returned false"; /// @notice Thrown when a token transferFrom reverted. string internal constant TRANSFER_FROM_REVERTED = "transferFrom reverted"; /// @notice Thrown when a token transferFrom returned false string internal constant TRANSFER_FROM_RETURNED_FALSE = "transferFrom returned false"; /// @notice Thrown when the maximum uint128 is exceeded. string internal constant MAX_UINT128_EXCEEDED = "max uint128 exceeded"; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.24; library IsContract { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address _account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return _account.code.length > 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol) pragma solidity ^0.8.20; import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol"; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * The initial owner is set to the address provided by the deployer. This can * later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable { /// @custom:storage-location erc7201:openzeppelin.storage.Ownable struct OwnableStorage { address _owner; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant OwnableStorageLocation = 0x9016d09d72d40fdae2fd8ceac6b6234c7706214fd39c1cd1e609a0528c199300; function _getOwnableStorage() private pure returns (OwnableStorage storage $) { assembly { $.slot := OwnableStorageLocation } } /** * @dev The caller account is not authorized to perform an operation. */ error OwnableUnauthorizedAccount(address account); /** * @dev The owner is not a valid owner account. (eg. `address(0)`) */ error OwnableInvalidOwner(address owner); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the address provided by the deployer as the initial owner. */ function __Ownable_init(address initialOwner) internal onlyInitializing { __Ownable_init_unchained(initialOwner); } function __Ownable_init_unchained(address initialOwner) internal onlyInitializing { if (initialOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(initialOwner); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { OwnableStorage storage $ = _getOwnableStorage(); return $._owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { if (owner() != _msgSender()) { revert OwnableUnauthorizedAccount(_msgSender()); } } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { if (newOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { OwnableStorage storage $ = _getOwnableStorage(); address oldOwner = $._owner; $._owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.20; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ```solidity * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Storage of the initializable contract. * * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions * when using with upgradeable contracts. * * @custom:storage-location erc7201:openzeppelin.storage.Initializable */ struct InitializableStorage { /** * @dev Indicates that the contract has been initialized. */ uint64 _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool _initializing; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00; /** * @dev The contract is already initialized. */ error InvalidInitialization(); /** * @dev The contract is not initializing. */ error NotInitializing(); /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint64 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. * * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in * production. * * Emits an {Initialized} event. */ modifier initializer() { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); // Cache values to avoid duplicated sloads bool isTopLevelCall = !$._initializing; uint64 initialized = $._initialized; // Allowed calls: // - initialSetup: the contract is not in the initializing state and no previous version was // initialized // - construction: the contract is initialized at version 1 (no reininitialization) and the // current contract is just being deployed bool initialSetup = initialized == 0 && isTopLevelCall; bool construction = initialized == 1 && address(this).code.length == 0; if (!initialSetup && !construction) { revert InvalidInitialization(); } $._initialized = 1; if (isTopLevelCall) { $._initializing = true; } _; if (isTopLevelCall) { $._initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * A reinitializer may be used after the original initialization step. This is essential to configure modules that * are added through upgrades and that require initialization. * * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer` * cannot be nested. If one is invoked in the context of another, execution will revert. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. * * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization. * * Emits an {Initialized} event. */ modifier reinitializer(uint64 version) { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); if ($._initializing || $._initialized >= version) { revert InvalidInitialization(); } $._initialized = version; $._initializing = true; _; $._initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { _checkInitializing(); _; } /** * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}. */ function _checkInitializing() internal view virtual { if (!_isInitializing()) { revert NotInitializing(); } } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. * * Emits an {Initialized} event the first time it is successfully executed. */ function _disableInitializers() internal virtual { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); if ($._initializing) { revert InvalidInitialization(); } if ($._initialized != type(uint64).max) { $._initialized = type(uint64).max; emit Initialized(type(uint64).max); } } /** * @dev Returns the highest version that has been initialized. See {reinitializer}. */ function _getInitializedVersion() internal view returns (uint64) { return _getInitializableStorage()._initialized; } /** * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}. */ function _isInitializing() internal view returns (bool) { return _getInitializableStorage()._initializing; } /** * @dev Returns a pointer to the storage namespace. */ // solhint-disable-next-line var-name-mixedcase function _getInitializableStorage() private pure returns (InitializableStorage storage $) { assembly { $.slot := INITIALIZABLE_STORAGE } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/MessageHashUtils.sol) pragma solidity ^0.8.20; import {Strings} from "../Strings.sol"; /** * @dev Signature message hash utilities for producing digests to be consumed by {ECDSA} recovery or signing. * * The library provides methods for generating a hash of a message that conforms to the * https://eips.ethereum.org/EIPS/eip-191[ERC-191] and https://eips.ethereum.org/EIPS/eip-712[EIP 712] * specifications. */ library MessageHashUtils { /** * @dev Returns the keccak256 digest of an ERC-191 signed data with version * `0x45` (`personal_sign` messages). * * The digest is calculated by prefixing a bytes32 `messageHash` with * `"\x19Ethereum Signed Message:\n32"` and hashing the result. It corresponds with the * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method. * * NOTE: The `messageHash` parameter is intended to be the result of hashing a raw message with * keccak256, although any bytes32 value can be safely used because the final digest will * be re-hashed. * * See {ECDSA-recover}. */ function toEthSignedMessageHash(bytes32 messageHash) internal pure returns (bytes32 digest) { /// @solidity memory-safe-assembly assembly { mstore(0x00, "\x19Ethereum Signed Message:\n32") // 32 is the bytes-length of messageHash mstore(0x1c, messageHash) // 0x1c (28) is the length of the prefix digest := keccak256(0x00, 0x3c) // 0x3c is the length of the prefix (0x1c) + messageHash (0x20) } } /** * @dev Returns the keccak256 digest of an ERC-191 signed data with version * `0x45` (`personal_sign` messages). * * The digest is calculated by prefixing an arbitrary `message` with * `"\x19Ethereum Signed Message:\n" + len(message)` and hashing the result. It corresponds with the * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method. * * See {ECDSA-recover}. */ function toEthSignedMessageHash(bytes memory message) internal pure returns (bytes32) { return keccak256(bytes.concat("\x19Ethereum Signed Message:\n", bytes(Strings.toString(message.length)), message)); } /** * @dev Returns the keccak256 digest of an ERC-191 signed data with version * `0x00` (data with intended validator). * * The digest is calculated by prefixing an arbitrary `data` with `"\x19\x00"` and the intended * `validator` address. Then hashing the result. * * See {ECDSA-recover}. */ function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) { return keccak256(abi.encodePacked(hex"19_00", validator, data)); } /** * @dev Returns the keccak256 digest of an EIP-712 typed data (ERC-191 version `0x01`). * * The digest is calculated from a `domainSeparator` and a `structHash`, by prefixing them with * `\x19\x01` and hashing the result. It corresponds to the hash signed by the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] JSON-RPC method as part of EIP-712. * * See {ECDSA-recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 digest) { /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) mstore(ptr, hex"19_01") mstore(add(ptr, 0x02), domainSeparator) mstore(add(ptr, 0x22), structHash) digest := keccak256(ptr, 0x42) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/ShortStrings.sol) pragma solidity ^0.8.20; import {StorageSlot} from "./StorageSlot.sol"; // | string | 0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA | // | length | 0x BB | type ShortString is bytes32; /** * @dev This library provides functions to convert short memory strings * into a `ShortString` type that can be used as an immutable variable. * * Strings of arbitrary length can be optimized using this library if * they are short enough (up to 31 bytes) by packing them with their * length (1 byte) in a single EVM word (32 bytes). Additionally, a * fallback mechanism can be used for every other case. * * Usage example: * * ```solidity * contract Named { * using ShortStrings for *; * * ShortString private immutable _name; * string private _nameFallback; * * constructor(string memory contractName) { * _name = contractName.toShortStringWithFallback(_nameFallback); * } * * function name() external view returns (string memory) { * return _name.toStringWithFallback(_nameFallback); * } * } * ``` */ library ShortStrings { // Used as an identifier for strings longer than 31 bytes. bytes32 private constant FALLBACK_SENTINEL = 0x00000000000000000000000000000000000000000000000000000000000000FF; error StringTooLong(string str); error InvalidShortString(); /** * @dev Encode a string of at most 31 chars into a `ShortString`. * * This will trigger a `StringTooLong` error is the input string is too long. */ function toShortString(string memory str) internal pure returns (ShortString) { bytes memory bstr = bytes(str); if (bstr.length > 31) { revert StringTooLong(str); } return ShortString.wrap(bytes32(uint256(bytes32(bstr)) | bstr.length)); } /** * @dev Decode a `ShortString` back to a "normal" string. */ function toString(ShortString sstr) internal pure returns (string memory) { uint256 len = byteLength(sstr); // using `new string(len)` would work locally but is not memory safe. string memory str = new string(32); /// @solidity memory-safe-assembly assembly { mstore(str, len) mstore(add(str, 0x20), sstr) } return str; } /** * @dev Return the length of a `ShortString`. */ function byteLength(ShortString sstr) internal pure returns (uint256) { uint256 result = uint256(ShortString.unwrap(sstr)) & 0xFF; if (result > 31) { revert InvalidShortString(); } return result; } /** * @dev Encode a string into a `ShortString`, or write it to storage if it is too long. */ function toShortStringWithFallback(string memory value, string storage store) internal returns (ShortString) { if (bytes(value).length < 32) { return toShortString(value); } else { StorageSlot.getStringSlot(store).value = value; return ShortString.wrap(FALLBACK_SENTINEL); } } /** * @dev Decode a string that was encoded to `ShortString` or written to storage using {setWithFallback}. */ function toStringWithFallback(ShortString value, string storage store) internal pure returns (string memory) { if (ShortString.unwrap(value) != FALLBACK_SENTINEL) { return toString(value); } else { return store; } } /** * @dev Return the length of a string that was encoded to `ShortString` or written to storage using * {setWithFallback}. * * WARNING: This will return the "byte length" of the string. This may not reflect the actual length in terms of * actual characters as the UTF-8 encoding of a single character can span over multiple bytes. */ function byteLengthWithFallback(ShortString value, string storage store) internal view returns (uint256) { if (ShortString.unwrap(value) != FALLBACK_SENTINEL) { return byteLength(value); } else { return bytes(store).length; } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC5267.sol) pragma solidity ^0.8.20; interface IERC5267 { /** * @dev MAY be emitted to signal that the domain could have changed. */ event EIP712DomainChanged(); /** * @dev returns the fields and values that describe the domain separator used by this contract for EIP-712 * signature. */ function eip712Domain() external view returns ( bytes1 fields, string memory name, string memory version, uint256 chainId, address verifyingContract, bytes32 salt, uint256[] memory extensions ); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; /** * @dev Helper library for emitting standardized panic codes. * * ```solidity * contract Example { * using Panic for uint256; * * // Use any of the declared internal constants * function foo() { Panic.GENERIC.panic(); } * * // Alternatively * function foo() { Panic.panic(Panic.GENERIC); } * } * ``` * * Follows the list from https://github.com/ethereum/solidity/blob/v0.8.24/libsolutil/ErrorCodes.h[libsolutil]. */ // slither-disable-next-line unused-state library Panic { /// @dev generic / unspecified error uint256 internal constant GENERIC = 0x00; /// @dev used by the assert() builtin uint256 internal constant ASSERT = 0x01; /// @dev arithmetic underflow or overflow uint256 internal constant UNDER_OVERFLOW = 0x11; /// @dev division or modulo by zero uint256 internal constant DIVISION_BY_ZERO = 0x12; /// @dev enum conversion error uint256 internal constant ENUM_CONVERSION_ERROR = 0x21; /// @dev invalid encoding in storage uint256 internal constant STORAGE_ENCODING_ERROR = 0x22; /// @dev empty array pop uint256 internal constant EMPTY_ARRAY_POP = 0x31; /// @dev array out of bounds access uint256 internal constant ARRAY_OUT_OF_BOUNDS = 0x32; /// @dev resource error (too large allocation or too large array) uint256 internal constant RESOURCE_ERROR = 0x41; /// @dev calling invalid internal function uint256 internal constant INVALID_INTERNAL_FUNCTION = 0x51; /// @dev Reverts with a panic code. Recommended to use with /// the internal constants with predefined codes. function panic(uint256 code) internal pure { /// @solidity memory-safe-assembly assembly { mstore(0x00, 0x4e487b71) mstore(0x20, code) revert(0x1c, 0x24) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "../token/ERC20/IERC20.sol";
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC165.sol) pragma solidity ^0.8.20; import {IERC165} from "../utils/introspection/IERC165.sol";
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol) pragma solidity ^0.8.20; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { } function __Context_init_unchained() internal onlyInitializing { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Strings.sol) pragma solidity ^0.8.20; import {Math} from "./math/Math.sol"; import {SignedMath} from "./math/SignedMath.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant HEX_DIGITS = "0123456789abcdef"; uint8 private constant ADDRESS_LENGTH = 20; /** * @dev The `value` string doesn't fit in the specified `length`. */ error StringsInsufficientHexLength(uint256 value, uint256 length); /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), HEX_DIGITS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `int256` to its ASCII `string` decimal representation. */ function toStringSigned(int256 value) internal pure returns (string memory) { return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value))); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { uint256 localValue = value; 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_DIGITS[localValue & 0xf]; localValue >>= 4; } if (localValue != 0) { revert StringsInsufficientHexLength(value, length); } 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); } /** * @dev Returns true if the two strings are equal. */ function equal(string memory a, string memory b) internal pure returns (bool) { return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/StorageSlot.sol) // This file was procedurally generated from scripts/generate/templates/StorageSlot.js. pragma solidity ^0.8.20; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC-1967 implementation slot: * ```solidity * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(newImplementation.code.length > 0); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` */ library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } struct StringSlot { string value; } struct BytesSlot { bytes value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` with member `value` located at `slot`. */ function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` representation of the string storage pointer `store`. */ function getStringSlot(string storage store) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } /** * @dev Returns an `BytesSlot` with member `value` located at `slot`. */ function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`. */ function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC-165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[ERC]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SignedMath.sol) pragma solidity ^0.8.20; /** * @dev Standard signed math utilities missing in the Solidity language. */ library SignedMath { /** * @dev Returns the largest of two signed numbers. */ function max(int256 a, int256 b) internal pure returns (int256) { return a > b ? a : b; } /** * @dev Returns the smallest of two signed numbers. */ function min(int256 a, int256 b) internal pure returns (int256) { return a < b ? a : b; } /** * @dev Returns the average of two signed numbers without overflow. * The result is rounded towards zero. */ function average(int256 a, int256 b) internal pure returns (int256) { // Formula from the book "Hacker's Delight" int256 x = (a & b) + ((a ^ b) >> 1); return x + (int256(uint256(x) >> 255) & (a ^ b)); } /** * @dev Returns the absolute unsigned value of a signed value. */ function abs(int256 n) internal pure returns (uint256) { unchecked { // Formula from the "Bit Twiddling Hacks" by Sean Eron Anderson. // Since `n` is a signed integer, the generated bytecode will use the SAR opcode to perform the right shift, // taking advantage of the most significant (or "sign" bit) in two's complement representation. // This opcode adds new most significant bits set to the value of the previous most significant bit. As a result, // the mask will either be `bytes(0)` (if n is positive) or `~bytes32(0)` (if n is negative). int256 mask = n >> 255; // A `bytes(0)` mask leaves the input unchanged, while a `~bytes32(0)` mask complements it. return uint256((n + mask) ^ mask); } } }
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Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
API[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"FailedDeployment","type":"error"},{"inputs":[{"internalType":"uint256","name":"balance","type":"uint256"},{"internalType":"uint256","name":"needed","type":"uint256"}],"name":"InsufficientBalance","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"SiloVault","type":"address"},{"indexed":true,"internalType":"address","name":"caller","type":"address"},{"indexed":false,"internalType":"address","name":"initialOwner","type":"address"},{"indexed":false,"internalType":"uint256","name":"initialTimelock","type":"uint256"},{"indexed":true,"internalType":"address","name":"asset","type":"address"},{"indexed":false,"internalType":"string","name":"name","type":"string"},{"indexed":false,"internalType":"string","name":"symbol","type":"string"}],"name":"CreateSiloVault","type":"event"},{"inputs":[],"name":"VAULT_INCENTIVES_MODULE_IMPLEMENTATION","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"counter","outputs":[{"internalType":"uint256","name":"counter","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"initialOwner","type":"address"},{"internalType":"uint256","name":"initialTimelock","type":"uint256"},{"internalType":"address","name":"asset","type":"address"},{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"}],"name":"createSiloVault","outputs":[{"internalType":"contract ISiloVault","name":"siloVault","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"isSiloVault","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Multichain Portfolio | 35 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.