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Contract Name:
StataTokenV2
Compiler Version
v0.8.22+commit.4fc1097e
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.0; import {ERC20Upgradeable, ERC20PermitUpgradeable} from 'openzeppelin-contracts-upgradeable/contracts/token/ERC20/extensions/ERC20PermitUpgradeable.sol'; import {PausableUpgradeable} from 'openzeppelin-contracts-upgradeable/contracts/utils/PausableUpgradeable.sol'; import {IERC20Metadata} from 'openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Metadata.sol'; import {IERC20Permit} from 'openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Permit.sol'; import {IRescuable, Rescuable} from 'solidity-utils/contracts/utils/Rescuable.sol'; import {IRescuableBase, RescuableBase} from 'solidity-utils/contracts/utils/RescuableBase.sol'; import {IACLManager} from '../../../contracts/interfaces/IACLManager.sol'; import {ERC4626Upgradeable, ERC4626StataTokenUpgradeable, IPool, Math, IERC20} from './ERC4626StataTokenUpgradeable.sol'; import {ERC20AaveLMUpgradeable, IRewardsController} from './ERC20AaveLMUpgradeable.sol'; import {IStataTokenV2} from './interfaces/IStataTokenV2.sol'; import {IAToken} from './interfaces/IAToken.sol'; /** * @title StataTokenV2 * @notice A 4626 Vault which wrapps aTokens in order to translate the rebasing nature of yield accrual into a non-rebasing value accrual. * @author BGD labs */ contract StataTokenV2 is ERC20PermitUpgradeable, ERC20AaveLMUpgradeable, ERC4626StataTokenUpgradeable, PausableUpgradeable, Rescuable, IStataTokenV2 { using Math for uint256; constructor( IPool pool, IRewardsController rewardsController ) ERC20AaveLMUpgradeable(rewardsController) ERC4626StataTokenUpgradeable(pool) { _disableInitializers(); } modifier onlyPauseGuardian() { if (!canPause(_msgSender())) revert OnlyPauseGuardian(_msgSender()); _; } function initialize( address aToken, string calldata staticATokenName, string calldata staticATokenSymbol ) external initializer { __ERC20_init(staticATokenName, staticATokenSymbol); __ERC20Permit_init(staticATokenName); __ERC20AaveLM_init(aToken); __ERC4626StataToken_init(aToken); __Pausable_init(); } ///@inheritdoc IStataTokenV2 function setPaused(bool paused) external onlyPauseGuardian { if (paused) _pause(); else _unpause(); } /// @inheritdoc Rescuable function whoCanRescue() public view override returns (address) { return POOL_ADDRESSES_PROVIDER.getACLAdmin(); } /// @inheritdoc IRescuableBase function maxRescue( address asset ) public view override(IRescuableBase, RescuableBase) returns (uint256) { address cachedAToken = aToken(); if (asset == cachedAToken) { uint256 requiredBacking = _convertToAssets(totalSupply(), Math.Rounding.Ceil); uint256 balance = IERC20(cachedAToken).balanceOf(address(this)); return balance > requiredBacking ? balance - requiredBacking : 0; } return type(uint256).max; } ///@inheritdoc IStataTokenV2 function canPause(address actor) public view returns (bool) { return IACLManager(POOL_ADDRESSES_PROVIDER.getACLManager()).isEmergencyAdmin(actor); } ///@inheritdoc IERC20Permit function nonces( address owner ) public view virtual override(ERC20PermitUpgradeable, IERC20Permit) returns (uint256) { return super.nonces(owner); } ///@inheritdoc IERC20Metadata function decimals() public view override(IERC20Metadata, ERC20Upgradeable, ERC4626Upgradeable) returns (uint8) { /// @notice The initialization of ERC4626Upgradeable already assures that decimal are /// the same as the underlying asset of the StataTokenV2, e.g. decimals of WETH for stataWETH return ERC4626Upgradeable.decimals(); } function _claimRewardsOnBehalf( address onBehalfOf, address receiver, address[] memory rewards ) internal virtual override whenNotPaused { super._claimRewardsOnBehalf(onBehalfOf, receiver, rewards); } // @notice to merge inheritance with ERC20AaveLMUpgradeable.sol properly we put // `whenNotPaused` here instead of using ERC20PausableUpgradeable function _update( address from, address to, uint256 amount ) internal virtual override(ERC20AaveLMUpgradeable, ERC20Upgradeable) whenNotPaused { ERC20AaveLMUpgradeable._update(from, to, amount); } }
// 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 v5.1.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; import {ContextUpgradeable} from "../../utils/ContextUpgradeable.sol"; import {IERC20Errors} from "@openzeppelin/contracts/interfaces/draft-IERC6093.sol"; import {Initializable} from "../../proxy/utils/Initializable.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. */ abstract contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20, IERC20Metadata, IERC20Errors { /// @custom:storage-location erc7201:openzeppelin.storage.ERC20 struct ERC20Storage { mapping(address account => uint256) _balances; mapping(address account => mapping(address spender => uint256)) _allowances; uint256 _totalSupply; string _name; string _symbol; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ERC20")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant ERC20StorageLocation = 0x52c63247e1f47db19d5ce0460030c497f067ca4cebf71ba98eeadabe20bace00; function _getERC20Storage() private pure returns (ERC20Storage storage $) { assembly { $.slot := ERC20StorageLocation } } /** * @dev Sets the values for {name} and {symbol}. * * All two of these values are immutable: they can only be set once during * construction. */ function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing { __ERC20_init_unchained(name_, symbol_); } function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing { ERC20Storage storage $ = _getERC20Storage(); $._name = name_; $._symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { ERC20Storage storage $ = _getERC20Storage(); return $._name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual returns (string memory) { ERC20Storage storage $ = _getERC20Storage(); 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) { ERC20Storage storage $ = _getERC20Storage(); return $._totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual returns (uint256) { ERC20Storage storage $ = _getERC20Storage(); 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) { ERC20Storage storage $ = _getERC20Storage(); 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}. * * Skips emitting an {Approval} event indicating an allowance update. This is not * required by the ERC. See {xref-ERC20-_approve-address-address-uint256-bool-}[_approve]. * * 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 { ERC20Storage storage $ = _getERC20Storage(); 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: * * ```solidity * 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 { ERC20Storage storage $ = _getERC20Storage(); 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 v5.1.0) (token/ERC20/extensions/ERC20Permit.sol) pragma solidity ^0.8.20; import {IERC20Permit} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol"; import {ERC20Upgradeable} from "../ERC20Upgradeable.sol"; import {ECDSA} from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import {EIP712Upgradeable} from "../../../utils/cryptography/EIP712Upgradeable.sol"; import {NoncesUpgradeable} from "../../../utils/NoncesUpgradeable.sol"; import {Initializable} from "../../../proxy/utils/Initializable.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 ERC20PermitUpgradeable is Initializable, ERC20Upgradeable, IERC20Permit, EIP712Upgradeable, NoncesUpgradeable { 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. */ function __ERC20Permit_init(string memory name) internal onlyInitializing { __EIP712_init_unchained(name, "1"); } function __ERC20Permit_init_unchained(string memory) internal onlyInitializing {} /** * @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, NoncesUpgradeable) 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 v5.1.0) (token/ERC20/extensions/ERC4626.sol) pragma solidity ^0.8.20; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; import {ERC20Upgradeable} from "../ERC20Upgradeable.sol"; import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import {IERC4626} from "@openzeppelin/contracts/interfaces/IERC4626.sol"; import {Math} from "@openzeppelin/contracts/utils/math/Math.sol"; import {Initializable} from "../../../proxy/utils/Initializable.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 ERC4626Upgradeable is Initializable, ERC20Upgradeable, IERC4626 { using Math for uint256; /// @custom:storage-location erc7201:openzeppelin.storage.ERC4626 struct ERC4626Storage { IERC20 _asset; uint8 _underlyingDecimals; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ERC4626")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant ERC4626StorageLocation = 0x0773e532dfede91f04b12a73d3d2acd361424f41f76b4fb79f090161e36b4e00; function _getERC4626Storage() private pure returns (ERC4626Storage storage $) { assembly { $.slot := ERC4626StorageLocation } } /** * @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). */ function __ERC4626_init(IERC20 asset_) internal onlyInitializing { __ERC4626_init_unchained(asset_); } function __ERC4626_init_unchained(IERC20 asset_) internal onlyInitializing { ERC4626Storage storage $ = _getERC4626Storage(); (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 ok, uint8 assetDecimals) { (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, ERC20Upgradeable) returns (uint8) { ERC4626Storage storage $ = _getERC4626Storage(); return $._underlyingDecimals + _decimalsOffset(); } /** @dev See {IERC4626-asset}. */ function asset() public view virtual returns (address) { ERC4626Storage storage $ = _getERC4626Storage(); return address($._asset); } /** @dev See {IERC4626-totalAssets}. */ function totalAssets() public view virtual returns (uint256) { ERC4626Storage storage $ = _getERC4626Storage(); 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 { ERC4626Storage storage $ = _getERC4626Storage(); // 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 { ERC4626Storage storage $ = _getERC4626Storage(); 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 v5.0.1) (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/Nonces.sol) pragma solidity ^0.8.20; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Provides tracking nonces for addresses. Nonces will only increment. */ abstract contract NoncesUpgradeable is Initializable { /** * @dev The nonce used for an `account` is not the expected current nonce. */ error InvalidAccountNonce(address account, uint256 currentNonce); /// @custom:storage-location erc7201:openzeppelin.storage.Nonces struct NoncesStorage { mapping(address account => uint256) _nonces; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Nonces")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant NoncesStorageLocation = 0x5ab42ced628888259c08ac98db1eb0cf702fc1501344311d8b100cd1bfe4bb00; function _getNoncesStorage() private pure returns (NoncesStorage storage $) { assembly { $.slot := NoncesStorageLocation } } function __Nonces_init() internal onlyInitializing { } function __Nonces_init_unchained() internal onlyInitializing { } /** * @dev Returns the next unused nonce for an address. */ function nonces(address owner) public view virtual returns (uint256) { NoncesStorage storage $ = _getNoncesStorage(); return $._nonces[owner]; } /** * @dev Consumes a nonce. * * Returns the current value and increments nonce. */ function _useNonce(address owner) internal virtual returns (uint256) { NoncesStorage storage $ = _getNoncesStorage(); // 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) (utils/Pausable.sol) pragma solidity ^0.8.20; import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol"; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract PausableUpgradeable is Initializable, ContextUpgradeable { /// @custom:storage-location erc7201:openzeppelin.storage.Pausable struct PausableStorage { bool _paused; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Pausable")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant PausableStorageLocation = 0xcd5ed15c6e187e77e9aee88184c21f4f2182ab5827cb3b7e07fbedcd63f03300; function _getPausableStorage() private pure returns (PausableStorage storage $) { assembly { $.slot := PausableStorageLocation } } /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); /** * @dev The operation failed because the contract is paused. */ error EnforcedPause(); /** * @dev The operation failed because the contract is not paused. */ error ExpectedPause(); /** * @dev Initializes the contract in unpaused state. */ function __Pausable_init() internal onlyInitializing { __Pausable_init_unchained(); } function __Pausable_init_unchained() internal onlyInitializing { PausableStorage storage $ = _getPausableStorage(); $._paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { PausableStorage storage $ = _getPausableStorage(); return $._paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { if (paused()) { revert EnforcedPause(); } } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { if (!paused()) { revert ExpectedPause(); } } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { PausableStorage storage $ = _getPausableStorage(); $._paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { PausableStorage storage $ = _getPausableStorage(); $._paused = false; emit Unpaused(_msgSender()); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/cryptography/EIP712.sol) pragma solidity ^0.8.20; import {MessageHashUtils} from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol"; import {IERC5267} from "@openzeppelin/contracts/interfaces/IERC5267.sol"; import {Initializable} from "../../proxy/utils/Initializable.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. */ abstract contract EIP712Upgradeable is Initializable, IERC5267 { bytes32 private constant TYPE_HASH = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"); /// @custom:storage-location erc7201:openzeppelin.storage.EIP712 struct EIP712Storage { /// @custom:oz-renamed-from _HASHED_NAME bytes32 _hashedName; /// @custom:oz-renamed-from _HASHED_VERSION bytes32 _hashedVersion; string _name; string _version; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.EIP712")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant EIP712StorageLocation = 0xa16a46d94261c7517cc8ff89f61c0ce93598e3c849801011dee649a6a557d100; function _getEIP712Storage() private pure returns (EIP712Storage storage $) { assembly { $.slot := EIP712StorageLocation } } /** * @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]. */ function __EIP712_init(string memory name, string memory version) internal onlyInitializing { __EIP712_init_unchained(name, version); } function __EIP712_init_unchained(string memory name, string memory version) internal onlyInitializing { EIP712Storage storage $ = _getEIP712Storage(); $._name = name; $._version = version; // Reset prior values in storage if upgrading $._hashedName = 0; $._hashedVersion = 0; } /** * @dev Returns the domain separator for the current chain. */ function _domainSeparatorV4() internal view returns (bytes32) { return _buildDomainSeparator(); } function _buildDomainSeparator() private view returns (bytes32) { return keccak256(abi.encode(TYPE_HASH, _EIP712NameHash(), _EIP712VersionHash(), 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 ) { EIP712Storage storage $ = _getEIP712Storage(); // If the hashed name and version in storage are non-zero, the contract hasn't been properly initialized // and the EIP712 domain is not reliable, as it will be missing name and version. require($._hashedName == 0 && $._hashedVersion == 0, "EIP712: Uninitialized"); return ( hex"0f", // 01111 _EIP712Name(), _EIP712Version(), block.chainid, address(this), bytes32(0), new uint256[](0) ); } /** * @dev The name parameter for the EIP712 domain. * * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs * are a concern. */ function _EIP712Name() internal view virtual returns (string memory) { EIP712Storage storage $ = _getEIP712Storage(); return $._name; } /** * @dev The version parameter for the EIP712 domain. * * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs * are a concern. */ function _EIP712Version() internal view virtual returns (string memory) { EIP712Storage storage $ = _getEIP712Storage(); return $._version; } /** * @dev The hash of the name parameter for the EIP712 domain. * * NOTE: In previous versions this function was virtual. In this version you should override `_EIP712Name` instead. */ function _EIP712NameHash() internal view returns (bytes32) { EIP712Storage storage $ = _getEIP712Storage(); string memory name = _EIP712Name(); if (bytes(name).length > 0) { return keccak256(bytes(name)); } else { // If the name is empty, the contract may have been upgraded without initializing the new storage. // We return the name hash in storage if non-zero, otherwise we assume the name is empty by design. bytes32 hashedName = $._hashedName; if (hashedName != 0) { return hashedName; } else { return keccak256(""); } } } /** * @dev The hash of the version parameter for the EIP712 domain. * * NOTE: In previous versions this function was virtual. In this version you should override `_EIP712Version` instead. */ function _EIP712VersionHash() internal view returns (bytes32) { EIP712Storage storage $ = _getEIP712Storage(); string memory version = _EIP712Version(); if (bytes(version).length > 0) { return keccak256(bytes(version)); } else { // If the version is empty, the contract may have been upgraded without initializing the new storage. // We return the version hash in storage if non-zero, otherwise we assume the version is empty by design. bytes32 hashedVersion = $._hashedVersion; if (hashedVersion != 0) { return hashedVersion; } else { return keccak256(""); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (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: 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 v5.0.0) (interfaces/IERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "../token/ERC20/IERC20.sol";
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (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: 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 // OpenZeppelin Contracts (last updated v5.1.0) (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 v5.1.0) (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 v5.1.0) (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 v5.1.0) (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 v5.1.0) (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 { /** * @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. * * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client" * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior. */ 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. * * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client" * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior. */ 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. * * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being * set here. */ 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). * * This is a variant of {_callOptionalReturnBool} that reverts if call fails to meet the requirements. */ function _callOptionalReturn(IERC20 token, bytes memory data) private { uint256 returnSize; uint256 returnValue; assembly ("memory-safe") { let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20) // bubble errors if iszero(success) { let ptr := mload(0x40) returndatacopy(ptr, 0, returndatasize()) revert(ptr, returndatasize()) } returnSize := returndatasize() returnValue := mload(0) } if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) { 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 silently catches all reverts and returns a bool instead. */ function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) { bool success; uint256 returnSize; uint256 returnValue; assembly ("memory-safe") { success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20) returnSize := returndatasize() returnValue := mload(0) } return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (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 assembly ("memory-safe") { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert Errors.FailedCall(); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/Errors.sol) 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. * * _Available since v5.1._ */ 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(); /** * @dev A necessary precompile is missing. */ error MissingPrecompile(address); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/Panic.sol) 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]. * * _Available since v5.1._ */ // 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 { assembly ("memory-safe") { mstore(0x00, 0x4e487b71) mstore(0x20, code) revert(0x1c, 0x24) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (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; assembly ("memory-safe") { ptr := add(buffer, add(32, length)) } while (true) { ptr--; assembly ("memory-safe") { 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 Converts an `address` with fixed length of 20 bytes to its checksummed ASCII `string` hexadecimal * representation, according to EIP-55. */ function toChecksumHexString(address addr) internal pure returns (string memory) { bytes memory buffer = bytes(toHexString(addr)); // hash the hex part of buffer (skip length + 2 bytes, length 40) uint256 hashValue; assembly ("memory-safe") { hashValue := shr(96, keccak256(add(buffer, 0x22), 40)) } for (uint256 i = 41; i > 1; --i) { // possible values for buffer[i] are 48 (0) to 57 (9) and 97 (a) to 102 (f) if (hashValue & 0xf > 7 && uint8(buffer[i]) > 96) { // case shift by xoring with 0x20 buffer[i] ^= 0x20; } hashValue >>= 4; } return string(buffer); } /** * @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 v5.1.0) (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 recovered, RecoverError err, bytes32 errArg) { 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. assembly ("memory-safe") { 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 recovered, RecoverError err, bytes32 errArg) { 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 recovered, RecoverError err, bytes32 errArg) { // 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 v5.1.0) (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) { assembly ("memory-safe") { 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) { assembly ("memory-safe") { 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 v5.1.0) (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 v5.1.0) (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 Branchless ternary evaluation for `a ? b : c`. Gas costs are constant. * * IMPORTANT: This function may reduce bytecode size and consume less gas when used standalone. * However, the compiler may optimize Solidity ternary operations (i.e. `a ? b : c`) to only compute * one branch when needed, making this function more expensive. */ function ternary(bool condition, uint256 a, uint256 b) internal pure returns (uint256) { unchecked { // branchless ternary works because: // b ^ (a ^ b) == a // b ^ 0 == b return b ^ ((a ^ b) * SafeCast.toUint(condition)); } } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return ternary(a > b, a, b); } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return ternary(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 SafeCast.toUint(a > 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 // 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(ternary(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, except 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 Fermat's little theorem and get the * inverse using `Math.modExp(a, n - 2, n)`. See {invModPrime}. */ 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 ternary(x < 0, n - uint256(-x), uint256(x)); // Wrap the result if it's negative. } } /** * @dev Variant of {invMod}. More efficient, but only works if `p` is known to be a prime greater than `2`. * * From https://en.wikipedia.org/wiki/Fermat%27s_little_theorem[Fermat's little theorem], we know that if p is * prime, then `a**(p-1) ≡ 1 mod p`. As a consequence, we have `a * a**(p-2) ≡ 1 mod p`, which means that * `a**(p-2)` is the modular multiplicative inverse of a in Fp. * * NOTE: this function does NOT check that `p` is a prime greater than `2`. */ function invModPrime(uint256 a, uint256 p) internal view returns (uint256) { unchecked { return Math.modExp(a, p - 2, p); } } /** * @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 as 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); assembly ("memory-safe") { 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); assembly ("memory-safe") { 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 v5.1.0) (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) { assembly ("memory-safe") { u := iszero(iszero(b)) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/math/SignedMath.sol) pragma solidity ^0.8.20; import {SafeCast} from "./SafeCast.sol"; /** * @dev Standard signed math utilities missing in the Solidity language. */ library SignedMath { /** * @dev Branchless ternary evaluation for `a ? b : c`. Gas costs are constant. * * IMPORTANT: This function may reduce bytecode size and consume less gas when used standalone. * However, the compiler may optimize Solidity ternary operations (i.e. `a ? b : c`) to only compute * one branch when needed, making this function more expensive. */ function ternary(bool condition, int256 a, int256 b) internal pure returns (int256) { unchecked { // branchless ternary works because: // b ^ (a ^ b) == a // b ^ 0 == b return b ^ ((a ^ b) * int256(SafeCast.toUint(condition))); } } /** * @dev Returns the largest of two signed numbers. */ function max(int256 a, int256 b) internal pure returns (int256) { return ternary(a > b, a, b); } /** * @dev Returns the smallest of two signed numbers. */ function min(int256 a, int256 b) internal pure returns (int256) { return ternary(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 `bytes32(0)` (if n is positive) or `~bytes32(0)` (if n is negative). int256 mask = n >> 255; // A `bytes32(0)` mask leaves the input unchanged, while a `~bytes32(0)` mask complements it. return uint256((n + mask) ^ mask); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {IERC20} from 'openzeppelin-contracts/contracts/token/ERC20/IERC20.sol'; import {RescuableBase} from './RescuableBase.sol'; import {IRescuable} from './interfaces/IRescuable.sol'; /** * @title Rescuable * @author BGD Labs * @notice abstract contract with the methods to rescue tokens (ERC20 and native) from a contract */ abstract contract Rescuable is RescuableBase, IRescuable { /// @notice modifier that checks that caller is allowed address modifier onlyRescueGuardian() { if (msg.sender != whoCanRescue()) { revert OnlyRescueGuardian(); } _; } /// @inheritdoc IRescuable function emergencyTokenTransfer( address erc20Token, address to, uint256 amount ) external virtual onlyRescueGuardian { _emergencyTokenTransfer(erc20Token, to, amount); } /// @inheritdoc IRescuable function emergencyEtherTransfer(address to, uint256 amount) external virtual onlyRescueGuardian { _emergencyEtherTransfer(to, amount); } function whoCanRescue() public view virtual returns (address); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {IERC20} from 'openzeppelin-contracts/contracts/token/ERC20/IERC20.sol'; import {SafeERC20} from 'openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol'; import {IRescuableBase} from './interfaces/IRescuableBase.sol'; abstract contract RescuableBase is IRescuableBase { using SafeERC20 for IERC20; /// @inheritdoc IRescuableBase function maxRescue(address erc20Token) public view virtual returns (uint256); function _emergencyTokenTransfer(address erc20Token, address to, uint256 amount) internal { uint256 max = maxRescue(erc20Token); amount = max > amount ? amount : max; IERC20(erc20Token).safeTransfer(to, amount); emit ERC20Rescued(msg.sender, erc20Token, to, amount); } function _emergencyEtherTransfer(address to, uint256 amount) internal { (bool success, ) = to.call{value: amount}(new bytes(0)); if (!success) { revert EthTransferFailed(); } emit NativeTokensRescued(msg.sender, to, amount); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {IRescuableBase} from './IRescuableBase.sol'; /** * @title IRescuable * @author BGD Labs * @notice interface containing the objects, events and methods definitions of the Rescuable contract */ interface IRescuable is IRescuableBase { error OnlyRescueGuardian(); /** * @notice method called to rescue tokens sent erroneously to the contract. Only callable by owner * @param erc20Token address of the token to rescue * @param to address to send the tokens * @param amount of tokens to rescue */ function emergencyTokenTransfer(address erc20Token, address to, uint256 amount) external; /** * @notice method called to rescue ether sent erroneously to the contract. Only callable by owner * @param to address to send the eth * @param amount of eth to rescue */ function emergencyEtherTransfer(address to, uint256 amount) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; /** * @title IRescuableBase * @author BGD Labs * @notice interface containing the objects, events and methods definitions of the RescuableBase contract */ interface IRescuableBase { error EthTransferFailed(); /** * @notice emitted when erc20 tokens get rescued * @param caller address that triggers the rescue * @param token address of the rescued token * @param to address that will receive the rescued tokens * @param amount quantity of tokens rescued */ event ERC20Rescued( address indexed caller, address indexed token, address indexed to, uint256 amount ); /** * @notice emitted when native tokens get rescued * @param caller address that triggers the rescue * @param to address that will receive the rescued tokens * @param amount quantity of tokens rescued */ event NativeTokensRescued(address indexed caller, address indexed to, uint256 amount); /** * @notice method that defined the maximum amount rescuable for any given asset. * @dev there's currently no way to limit the rescuable "native asset", as we assume erc20s as intended underlying. * @return the maximum amount of */ function maxRescue(address erc20Token) external view returns (uint256); }
// SPDX-License-Identifier: MIT // Chainlink Contracts v0.8 pragma solidity ^0.8.0; interface AggregatorInterface { function decimals() external view returns (uint8); function description() external view returns (string memory); function getRoundData( uint80 _roundId ) external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function latestRoundData() external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function latestAnswer() external view returns (int256); function latestTimestamp() external view returns (uint256); function latestRound() external view returns (uint256); function getAnswer(uint256 roundId) external view returns (int256); function getTimestamp(uint256 roundId) external view returns (uint256); event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 updatedAt); event NewRound(uint256 indexed roundId, address indexed startedBy, uint256 startedAt); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import {ERC20Upgradeable} from 'openzeppelin-contracts-upgradeable/contracts/token/ERC20/ERC20Upgradeable.sol'; import {IERC20} from 'openzeppelin-contracts/contracts/interfaces/IERC20.sol'; import {SafeERC20} from 'openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol'; import {SafeCast} from 'openzeppelin-contracts/contracts/utils/math/SafeCast.sol'; import {IRewardsController} from '../../rewards/interfaces/IRewardsController.sol'; import {IERC20AaveLM} from './interfaces/IERC20AaveLM.sol'; /** * @title ERC20AaveLMUpgradeable.sol * @notice Wrapper smart contract that supports tracking and claiming liquidity mining rewards from the Aave system * @dev ERC20 extension, so ERC20 initialization should be done by the children contract/s * @author BGD labs */ abstract contract ERC20AaveLMUpgradeable is ERC20Upgradeable, IERC20AaveLM { using SafeCast for uint256; /// @custom:storage-location erc7201:aave-dao.storage.ERC20AaveLM struct ERC20AaveLMStorage { address _referenceAsset; // a/v token to track rewards on INCENTIVES_CONTROLLER address[] _rewardTokens; mapping(address reward => RewardIndexCache cache) _startIndex; mapping(address user => mapping(address reward => UserRewardsData cache)) _userRewardsData; } // keccak256(abi.encode(uint256(keccak256("aave-dao.storage.ERC20AaveLM")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant ERC20AaveLMStorageLocation = 0x4fad66563f105be0bff96185c9058c4934b504d3ba15ca31e86294f0b01fd200; function _getERC20AaveLMStorage() private pure returns (ERC20AaveLMStorage storage $) { assembly { $.slot := ERC20AaveLMStorageLocation } } IRewardsController public immutable INCENTIVES_CONTROLLER; constructor(IRewardsController rewardsController) { if (address(rewardsController) == address(0)) { revert ZeroIncentivesControllerIsForbidden(); } INCENTIVES_CONTROLLER = rewardsController; } function __ERC20AaveLM_init(address referenceAsset_) internal onlyInitializing { __ERC20AaveLM_init_unchained(referenceAsset_); } function __ERC20AaveLM_init_unchained(address referenceAsset_) internal onlyInitializing { ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); $._referenceAsset = referenceAsset_; if (INCENTIVES_CONTROLLER != IRewardsController(address(0))) { refreshRewardTokens(); } } ///@inheritdoc IERC20AaveLM function claimRewardsOnBehalf( address onBehalfOf, address receiver, address[] memory rewards ) external { address msgSender = _msgSender(); if (msgSender != onBehalfOf && msgSender != INCENTIVES_CONTROLLER.getClaimer(onBehalfOf)) { revert InvalidClaimer(msgSender); } _claimRewardsOnBehalf(onBehalfOf, receiver, rewards); } ///@inheritdoc IERC20AaveLM function claimRewards(address receiver, address[] memory rewards) external { _claimRewardsOnBehalf(_msgSender(), receiver, rewards); } ///@inheritdoc IERC20AaveLM function claimRewardsToSelf(address[] memory rewards) external { _claimRewardsOnBehalf(_msgSender(), _msgSender(), rewards); } ///@inheritdoc IERC20AaveLM function refreshRewardTokens() public override { ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); address[] memory rewards = INCENTIVES_CONTROLLER.getRewardsByAsset($._referenceAsset); for (uint256 i = 0; i < rewards.length; i++) { _registerRewardToken(rewards[i]); } } ///@inheritdoc IERC20AaveLM function collectAndUpdateRewards(address reward) public returns (uint256) { if (reward == address(0)) { return 0; } ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); address[] memory assets = new address[](1); assets[0] = address($._referenceAsset); return INCENTIVES_CONTROLLER.claimRewards(assets, type(uint256).max, address(this), reward); } ///@inheritdoc IERC20AaveLM function isRegisteredRewardToken(address reward) public view override returns (bool) { ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); return $._startIndex[reward].isRegistered; } ///@inheritdoc IERC20AaveLM function getCurrentRewardsIndex(address reward) public view returns (uint256) { if (address(reward) == address(0)) { return 0; } ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); (, uint256 nextIndex) = INCENTIVES_CONTROLLER.getAssetIndex($._referenceAsset, reward); return nextIndex; } ///@inheritdoc IERC20AaveLM function getTotalClaimableRewards(address reward) external view returns (uint256) { if (reward == address(0)) { return 0; } ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); address[] memory assets = new address[](1); assets[0] = $._referenceAsset; uint256 freshRewards = INCENTIVES_CONTROLLER.getUserRewards(assets, address(this), reward); return IERC20(reward).balanceOf(address(this)) + freshRewards; } ///@inheritdoc IERC20AaveLM function getClaimableRewards(address user, address reward) external view returns (uint256) { return _getClaimableRewards(user, reward, balanceOf(user), getCurrentRewardsIndex(reward)); } ///@inheritdoc IERC20AaveLM function getUnclaimedRewards(address user, address reward) external view returns (uint256) { ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); return $._userRewardsData[user][reward].unclaimedRewards; } ///@inheritdoc IERC20AaveLM function getReferenceAsset() external view returns (address) { ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); return $._referenceAsset; } ///@inheritdoc IERC20AaveLM function rewardTokens() external view returns (address[] memory) { ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); return $._rewardTokens; } /** * @notice Updates rewards for senders and receiver in a transfer (not updating rewards for address(0)) * @param from The address of the sender of tokens * @param to The address of the receiver of tokens */ function _update(address from, address to, uint256 amount) internal virtual override { ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); for (uint256 i = 0; i < $._rewardTokens.length; i++) { address rewardToken = address($._rewardTokens[i]); uint256 rewardsIndex = getCurrentRewardsIndex(rewardToken); if (from != address(0)) { _updateUser(from, rewardsIndex, rewardToken); } if (to != address(0) && from != to) { _updateUser(to, rewardsIndex, rewardToken); } } super._update(from, to, amount); } /** * @notice Adding the pending rewards to the unclaimed for specific user and updating user index * @param user The address of the user to update * @param currentRewardsIndex The current rewardIndex * @param rewardToken The address of the reward token */ function _updateUser(address user, uint256 currentRewardsIndex, address rewardToken) internal { ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); uint256 balance = balanceOf(user); if (balance > 0) { $._userRewardsData[user][rewardToken].unclaimedRewards = _getClaimableRewards( user, rewardToken, balance, currentRewardsIndex ).toUint128(); } $._userRewardsData[user][rewardToken].rewardsIndexOnLastInteraction = currentRewardsIndex .toUint128(); } /** * @notice Compute the pending in asset decimals. Pending is the amount to add (not yet unclaimed) rewards in asset decimals. * @param balance The balance of the user * @param rewardsIndexOnLastInteraction The index which was on the last interaction of the user * @param currentRewardsIndex The current rewards index in the system * @return The amount of pending rewards in asset decimals */ function _getPendingRewards( uint256 balance, uint256 rewardsIndexOnLastInteraction, uint256 currentRewardsIndex ) internal view returns (uint256) { if (balance == 0) { return 0; } return (balance * (currentRewardsIndex - rewardsIndexOnLastInteraction)) / 10 ** decimals(); } /** * @notice Compute the claimable rewards for a user * @param user The address of the user * @param reward The address of the reward * @param balance The balance of the user in asset decimals * @param currentRewardsIndex The current rewards index * @return The total rewards that can be claimed by the user (if `fresh` flag true, after updating rewards) */ function _getClaimableRewards( address user, address reward, uint256 balance, uint256 currentRewardsIndex ) internal view returns (uint256) { ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); RewardIndexCache memory rewardsIndexCache = $._startIndex[reward]; if (!rewardsIndexCache.isRegistered) { revert RewardNotInitialized(reward); } UserRewardsData memory currentUserRewardsData = $._userRewardsData[user][reward]; return currentUserRewardsData.unclaimedRewards + _getPendingRewards( balance, currentUserRewardsData.rewardsIndexOnLastInteraction == 0 ? rewardsIndexCache.lastUpdatedIndex : currentUserRewardsData.rewardsIndexOnLastInteraction, currentRewardsIndex ); } /** * @notice Claim rewards on behalf of a user and send them to a receiver * @param onBehalfOf The address to claim on behalf of * @param rewards The addresses of the rewards * @param receiver The address to receive the rewards */ function _claimRewardsOnBehalf( address onBehalfOf, address receiver, address[] memory rewards ) internal virtual { for (uint256 i = 0; i < rewards.length; i++) { if (address(rewards[i]) == address(0)) { continue; } uint256 currentRewardsIndex = getCurrentRewardsIndex(rewards[i]); uint256 balance = balanceOf(onBehalfOf); uint256 userReward = _getClaimableRewards( onBehalfOf, rewards[i], balance, currentRewardsIndex ); uint256 totalRewardTokenBalance = IERC20(rewards[i]).balanceOf(address(this)); uint256 unclaimedReward = 0; if (userReward > totalRewardTokenBalance) { totalRewardTokenBalance += collectAndUpdateRewards(address(rewards[i])); } if (userReward > totalRewardTokenBalance) { unclaimedReward = userReward - totalRewardTokenBalance; userReward = totalRewardTokenBalance; } if (userReward > 0) { ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); $._userRewardsData[onBehalfOf][rewards[i]].unclaimedRewards = unclaimedReward.toUint128(); $ ._userRewardsData[onBehalfOf][rewards[i]] .rewardsIndexOnLastInteraction = currentRewardsIndex.toUint128(); SafeERC20.safeTransfer(IERC20(rewards[i]), receiver, userReward); } } } /** * @notice Initializes a new rewardToken * @param reward The reward token to be registered */ function _registerRewardToken(address reward) internal { if (isRegisteredRewardToken(reward)) return; uint256 startIndex = getCurrentRewardsIndex(reward); ERC20AaveLMStorage storage $ = _getERC20AaveLMStorage(); $._rewardTokens.push(reward); $._startIndex[reward] = RewardIndexCache(true, startIndex.toUint248()); emit RewardTokenRegistered(reward, startIndex); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import {ERC4626Upgradeable, Math, IERC4626} from 'openzeppelin-contracts-upgradeable/contracts/token/ERC20/extensions/ERC4626Upgradeable.sol'; import {SafeERC20, IERC20} from 'openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol'; import {IERC20Permit} from 'openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Permit.sol'; import {IPool, IPoolAddressesProvider} from '../../interfaces/IPool.sol'; import {IAaveOracle} from '../../interfaces/IAaveOracle.sol'; import {DataTypes, ReserveConfiguration} from '../../protocol/libraries/configuration/ReserveConfiguration.sol'; import {IAToken} from './interfaces/IAToken.sol'; import {IERC4626StataToken} from './interfaces/IERC4626StataToken.sol'; /** * @title ERC4626StataTokenUpgradeable * @notice Wrapper smart contract that allows to deposit tokens on the Aave protocol and receive * a token which balance doesn't increase automatically, but uses an ever-increasing exchange rate. * @dev ERC20 extension, so ERC20 initialization should be done by the children contract/s * @author BGD labs */ abstract contract ERC4626StataTokenUpgradeable is ERC4626Upgradeable, IERC4626StataToken { using Math for uint256; /// @custom:storage-location erc7201:aave-dao.storage.ERC4626StataToken struct ERC4626StataTokenStorage { IERC20 _aToken; } // keccak256(abi.encode(uint256(keccak256("aave-dao.storage.ERC4626StataToken")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant ERC4626StataTokenStorageLocation = 0x55029d3f54709e547ed74b2fc842d93107ab1490ab7555dd9dd0bf6451101900; function _getERC4626StataTokenStorage() private pure returns (ERC4626StataTokenStorage storage $) { assembly { $.slot := ERC4626StataTokenStorageLocation } } uint256 public constant RAY = 1e27; IPool public immutable POOL; IPoolAddressesProvider public immutable POOL_ADDRESSES_PROVIDER; constructor(IPool pool) { POOL = pool; POOL_ADDRESSES_PROVIDER = pool.ADDRESSES_PROVIDER(); } function __ERC4626StataToken_init(address newAToken) internal onlyInitializing { IERC20 aTokenUnderlying = __ERC4626StataToken_init_unchained(newAToken); __ERC4626_init_unchained(aTokenUnderlying); } function __ERC4626StataToken_init_unchained( address newAToken ) internal onlyInitializing returns (IERC20) { // sanity check, to be sure that we support that version of the aToken address poolOfAToken = IAToken(newAToken).POOL(); if (poolOfAToken != address(POOL)) revert PoolAddressMismatch(poolOfAToken); IERC20 aTokenUnderlying = IERC20(IAToken(newAToken).UNDERLYING_ASSET_ADDRESS()); ERC4626StataTokenStorage storage $ = _getERC4626StataTokenStorage(); $._aToken = IERC20(newAToken); SafeERC20.forceApprove(aTokenUnderlying, address(POOL), type(uint256).max); return aTokenUnderlying; } ///@inheritdoc IERC4626StataToken function depositATokens(uint256 assets, address receiver) external returns (uint256) { // because aToken is rebasable, we allow user to specify more then he has to compensate growth during the tx mining uint256 actualUserBalance = IERC20(aToken()).balanceOf(_msgSender()); if (assets > actualUserBalance) { assets = actualUserBalance; } uint256 shares = previewDeposit(assets); _deposit(_msgSender(), receiver, assets, shares, false); return shares; } ///@inheritdoc IERC4626StataToken function depositWithPermit( uint256 assets, address receiver, uint256 deadline, SignatureParams memory sig, bool depositToAave ) external returns (uint256) { address assetToDeposit = depositToAave ? asset() : aToken(); try IERC20Permit(assetToDeposit).permit( _msgSender(), address(this), assets, deadline, sig.v, sig.r, sig.s ) {} catch {} // because aToken is rebasable, we allow user to specify more then he has to compensate growth during the tx mining // to make it consistent, we keep the same behaviour for the normal underlying too uint256 actualUserBalance = IERC20(assetToDeposit).balanceOf(_msgSender()); if (assets > actualUserBalance) { assets = actualUserBalance; } uint256 shares = previewDeposit(assets); _deposit(_msgSender(), receiver, assets, shares, depositToAave); return shares; } ///@inheritdoc IERC4626StataToken function redeemATokens( uint256 shares, address receiver, address owner ) external returns (uint256) { uint256 assets = previewRedeem(shares); _withdraw(_msgSender(), receiver, owner, assets, shares, false); return assets; } ///@inheritdoc IERC4626StataToken function aToken() public view returns (address) { ERC4626StataTokenStorage storage $ = _getERC4626StataTokenStorage(); return address($._aToken); } ///@inheritdoc IERC4626 function maxMint(address) public view override returns (uint256) { uint256 assets = maxDeposit(address(0)); if (assets == type(uint256).max) return type(uint256).max; return convertToShares(assets); } ///@inheritdoc IERC4626 function maxWithdraw(address owner) public view override returns (uint256) { return convertToAssets(maxRedeem(owner)); } ///@inheritdoc IERC4626 function totalAssets() public view override returns (uint256) { return _convertToAssets(totalSupply(), Math.Rounding.Floor); } ///@inheritdoc IERC4626 function maxRedeem(address owner) public view override returns (uint256) { DataTypes.ReserveConfigurationMap memory reserveConfiguration = POOL.getConfiguration(asset()); // if paused or inactive users cannot withdraw underlying if ( !ReserveConfiguration.getActive(reserveConfiguration) || ReserveConfiguration.getPaused(reserveConfiguration) ) { return 0; } // otherwise users can withdraw up to the available amount uint128 virtualUnderlyingBalance = POOL.getVirtualUnderlyingBalance(asset()); uint256 underlyingTokenBalanceInShares = convertToShares(virtualUnderlyingBalance); uint256 cachedUserBalance = balanceOf(owner); return underlyingTokenBalanceInShares >= cachedUserBalance ? cachedUserBalance : underlyingTokenBalanceInShares; } ///@inheritdoc IERC4626 function maxDeposit(address) public view override returns (uint256) { DataTypes.ReserveDataLegacy memory reserveData = POOL.getReserveData(asset()); // if inactive, paused or frozen users cannot deposit underlying if ( !ReserveConfiguration.getActive(reserveData.configuration) || ReserveConfiguration.getPaused(reserveData.configuration) || ReserveConfiguration.getFrozen(reserveData.configuration) ) { return 0; } uint256 supplyCap = ReserveConfiguration.getSupplyCap(reserveData.configuration) * (10 ** ReserveConfiguration.getDecimals(reserveData.configuration)); // if no supply cap deposit is unlimited if (supplyCap == 0) return type(uint256).max; // return remaining supply cap margin uint256 currentSupply = (IAToken(reserveData.aTokenAddress).scaledTotalSupply() + reserveData.accruedToTreasury).mulDiv(_rate(), RAY, Math.Rounding.Ceil); return currentSupply >= supplyCap ? 0 : supplyCap - currentSupply; } ///@inheritdoc IERC4626StataToken function latestAnswer() external view returns (int256) { uint256 aTokenUnderlyingAssetPrice = IAaveOracle(POOL_ADDRESSES_PROVIDER.getPriceOracle()) .getAssetPrice(asset()); // @notice aTokenUnderlyingAssetPrice * rate / RAY return int256(aTokenUnderlyingAssetPrice.mulDiv(_rate(), RAY, Math.Rounding.Floor)); } function _deposit( address caller, address receiver, uint256 assets, uint256 shares, bool depositToAave ) internal virtual { if (shares == 0) { revert StaticATokenInvalidZeroShares(); } // If _asset is ERC777, `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 if (depositToAave) { address cachedAsset = asset(); SafeERC20.safeTransferFrom(IERC20(cachedAsset), caller, address(this), assets); POOL.deposit(cachedAsset, assets, address(this), 0); } else { ERC4626StataTokenStorage storage $ = _getERC4626StataTokenStorage(); SafeERC20.safeTransferFrom($._aToken, caller, address(this), assets); } _mint(receiver, shares); emit Deposit(caller, receiver, assets, shares); } function _deposit( address caller, address receiver, uint256 assets, uint256 shares ) internal virtual override { _deposit(caller, receiver, assets, shares, true); } function _withdraw( address caller, address receiver, address owner, uint256 assets, uint256 shares, bool withdrawFromAave ) internal virtual { if (caller != owner) { _spendAllowance(owner, caller, shares); } // If _asset is ERC777, `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); if (withdrawFromAave) { POOL.withdraw(asset(), assets, receiver); } else { ERC4626StataTokenStorage storage $ = _getERC4626StataTokenStorage(); SafeERC20.safeTransfer($._aToken, receiver, assets); } emit Withdraw(caller, receiver, owner, assets, shares); } function _withdraw( address caller, address receiver, address owner, uint256 assets, uint256 shares ) internal virtual override { _withdraw(caller, receiver, owner, assets, shares, true); } function _convertToShares( uint256 assets, Math.Rounding rounding ) internal view virtual override returns (uint256) { // * @notice assets * RAY / exchangeRate return assets.mulDiv(RAY, _rate(), rounding); } function _convertToAssets( uint256 shares, Math.Rounding rounding ) internal view virtual override returns (uint256) { // * @notice share * exchangeRate / RAY return shares.mulDiv(_rate(), RAY, rounding); } function _rate() internal view returns (uint256) { return POOL.getReserveNormalizedIncome(asset()); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.10; interface IAToken { function POOL() external view returns (address); function getIncentivesController() external view returns (address); function UNDERLYING_ASSET_ADDRESS() external view returns (address); function RESERVE_TREASURY_ADDRESS() external view returns (address); /** * @notice Returns the scaled total supply of the scaled balance token. Represents sum(debt/index) * @return The scaled total supply */ function scaledTotalSupply() external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.10; interface IERC20AaveLM { struct UserRewardsData { uint128 rewardsIndexOnLastInteraction; uint128 unclaimedRewards; } struct RewardIndexCache { bool isRegistered; uint248 lastUpdatedIndex; } error ZeroIncentivesControllerIsForbidden(); error InvalidClaimer(address claimer); error RewardNotInitialized(address reward); event RewardTokenRegistered(address indexed reward, uint256 startIndex); /** * @notice Claims rewards from `INCENTIVES_CONTROLLER` and updates internal accounting of rewards. * @param reward The reward to claim * @return uint256 Amount collected */ function collectAndUpdateRewards(address reward) external returns (uint256); /** * @notice Claim rewards on behalf of a user and send them to a receiver * @dev Only callable by if sender is onBehalfOf or sender is approved claimer * @param onBehalfOf The address to claim on behalf of * @param receiver The address to receive the rewards * @param rewards The rewards to claim */ function claimRewardsOnBehalf( address onBehalfOf, address receiver, address[] memory rewards ) external; /** * @notice Claim rewards and send them to a receiver * @param receiver The address to receive the rewards * @param rewards The rewards to claim */ function claimRewards(address receiver, address[] memory rewards) external; /** * @notice Claim rewards * @param rewards The rewards to claim */ function claimRewardsToSelf(address[] memory rewards) external; /** * @notice Get the total claimable rewards of the contract. * @param reward The reward to claim * @return uint256 The current balance + pending rewards from the `_incentivesController` */ function getTotalClaimableRewards(address reward) external view returns (uint256); /** * @notice Get the total claimable rewards for a user in asset decimals * @param user The address of the user * @param reward The reward to claim * @return uint256 The claimable amount of rewards in asset decimals */ function getClaimableRewards(address user, address reward) external view returns (uint256); /** * @notice The unclaimed rewards for a user in asset decimals * @param user The address of the user * @param reward The reward to claim * @return uint256 The unclaimed amount of rewards in asset decimals */ function getUnclaimedRewards(address user, address reward) external view returns (uint256); /** * @notice The underlying asset reward index in RAY * @param reward The reward to claim * @return uint256 The underlying asset reward index in RAY */ function getCurrentRewardsIndex(address reward) external view returns (uint256); /** * @notice Returns reference a/v token address used on INCENTIVES_CONTROLLER for tracking * @return address of reference token */ function getReferenceAsset() external view returns (address); /** * @notice The IERC20s that are currently rewarded to addresses of the vault via LM on incentivescontroller. * @return IERC20 The IERC20s of the rewards. */ function rewardTokens() external view returns (address[] memory); /** * @notice Fetches all rewardTokens from the incentivecontroller and registers the missing ones. */ function refreshRewardTokens() external; /** * @notice Checks if the passed token is a registered reward. * @param reward The reward to claim * @return bool signaling if token is a registered reward. */ function isRegisteredRewardToken(address reward) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.10; import {IPool, IPoolAddressesProvider} from '../../../interfaces/IPool.sol'; interface IERC4626StataToken { struct SignatureParams { uint8 v; bytes32 r; bytes32 s; } error PoolAddressMismatch(address pool); error StaticATokenInvalidZeroShares(); error OnlyPauseGuardian(address caller); /** * @notice The pool associated with the aToken. * @return The pool address. */ function POOL() external view returns (IPool); /** * @notice The poolAddressesProvider associated with the pool. * @return The poolAddressesProvider address. */ function POOL_ADDRESSES_PROVIDER() external view returns (IPoolAddressesProvider); /** * @notice Burns `shares` of static aToken, with receiver receiving the corresponding amount of aToken * @param shares The shares to withdraw, in static balance of StaticAToken * @param receiver The address that will receive the amount of `ASSET` withdrawn from the Aave protocol * @return amountToWithdraw: aToken send to `receiver`, dynamic balance **/ function redeemATokens( uint256 shares, address receiver, address owner ) external returns (uint256); /** * @notice Deposits aTokens and mints static aTokens to msg.sender * @param assets The amount of aTokens to deposit (e.g. deposit of 100 aUSDC) * @param receiver The address that will receive the static aTokens * @return uint256 The amount of StaticAToken minted, static balance **/ function depositATokens(uint256 assets, address receiver) external returns (uint256); /** * @notice Universal deposit method for proving aToken or underlying liquidity with permit * @param assets The amount of aTokens or underlying to deposit * @param receiver The address that will receive the static aTokens * @param deadline Must be a timestamp in the future * @param sig A `secp256k1` signature params from `msgSender()` * @return uint256 The amount of StaticAToken minted, static balance **/ function depositWithPermit( uint256 assets, address receiver, uint256 deadline, SignatureParams memory sig, bool depositToAave ) external returns (uint256); /** * @notice The aToken used inside the 4626 vault. * @return address The aToken address. */ function aToken() external view returns (address); /** * @notice Returns the current asset price of the stataToken. * The price is calculated as `underlying_price * exchangeRate`. * It is important to note that: * - `underlying_price` is the price obtained by the aave-oracle and is subject to it's internal pricing mechanisms. * - as the price is scaled over the exchangeRate, but maintains the same precision as the underlying the price might be underestimated by 1 unit. * - when pricing multiple `shares` as `shares * price` keep in mind that the error compounds. * @return price the current asset price. */ function latestAnswer() external view returns (int256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {IERC4626} from 'openzeppelin-contracts/contracts/interfaces/IERC4626.sol'; import {IERC20Permit} from 'openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Permit.sol'; import {IERC4626StataToken} from './IERC4626StataToken.sol'; import {IERC20AaveLM} from './IERC20AaveLM.sol'; interface IStataTokenV2 is IERC4626, IERC20Permit, IERC4626StataToken, IERC20AaveLM { /** * @notice Checks if the passed actor is permissioned emergency admin. * @param actor The reward to claim * @return bool signaling if actor can pause the vault. */ function canPause(address actor) external view returns (bool); /** * @notice Pauses/unpauses all system's operations * @param paused boolean determining if the token should be paused or unpaused */ function setPaused(bool paused) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {IPoolAddressesProvider} from './IPoolAddressesProvider.sol'; /** * @title IACLManager * @author Aave * @notice Defines the basic interface for the ACL Manager */ interface IACLManager { /** * @notice Returns the contract address of the PoolAddressesProvider * @return The address of the PoolAddressesProvider */ function ADDRESSES_PROVIDER() external view returns (IPoolAddressesProvider); /** * @notice Returns the identifier of the PoolAdmin role * @return The id of the PoolAdmin role */ function POOL_ADMIN_ROLE() external view returns (bytes32); /** * @notice Returns the identifier of the EmergencyAdmin role * @return The id of the EmergencyAdmin role */ function EMERGENCY_ADMIN_ROLE() external view returns (bytes32); /** * @notice Returns the identifier of the RiskAdmin role * @return The id of the RiskAdmin role */ function RISK_ADMIN_ROLE() external view returns (bytes32); /** * @notice Returns the identifier of the FlashBorrower role * @return The id of the FlashBorrower role */ function FLASH_BORROWER_ROLE() external view returns (bytes32); /** * @notice Returns the identifier of the Bridge role * @return The id of the Bridge role */ function BRIDGE_ROLE() external view returns (bytes32); /** * @notice Returns the identifier of the AssetListingAdmin role * @return The id of the AssetListingAdmin role */ function ASSET_LISTING_ADMIN_ROLE() external view returns (bytes32); /** * @notice Set the role as admin of a specific role. * @dev By default the admin role for all roles is `DEFAULT_ADMIN_ROLE`. * @param role The role to be managed by the admin role * @param adminRole The admin role */ function setRoleAdmin(bytes32 role, bytes32 adminRole) external; /** * @notice Adds a new admin as PoolAdmin * @param admin The address of the new admin */ function addPoolAdmin(address admin) external; /** * @notice Removes an admin as PoolAdmin * @param admin The address of the admin to remove */ function removePoolAdmin(address admin) external; /** * @notice Returns true if the address is PoolAdmin, false otherwise * @param admin The address to check * @return True if the given address is PoolAdmin, false otherwise */ function isPoolAdmin(address admin) external view returns (bool); /** * @notice Adds a new admin as EmergencyAdmin * @param admin The address of the new admin */ function addEmergencyAdmin(address admin) external; /** * @notice Removes an admin as EmergencyAdmin * @param admin The address of the admin to remove */ function removeEmergencyAdmin(address admin) external; /** * @notice Returns true if the address is EmergencyAdmin, false otherwise * @param admin The address to check * @return True if the given address is EmergencyAdmin, false otherwise */ function isEmergencyAdmin(address admin) external view returns (bool); /** * @notice Adds a new admin as RiskAdmin * @param admin The address of the new admin */ function addRiskAdmin(address admin) external; /** * @notice Removes an admin as RiskAdmin * @param admin The address of the admin to remove */ function removeRiskAdmin(address admin) external; /** * @notice Returns true if the address is RiskAdmin, false otherwise * @param admin The address to check * @return True if the given address is RiskAdmin, false otherwise */ function isRiskAdmin(address admin) external view returns (bool); /** * @notice Adds a new address as FlashBorrower * @param borrower The address of the new FlashBorrower */ function addFlashBorrower(address borrower) external; /** * @notice Removes an address as FlashBorrower * @param borrower The address of the FlashBorrower to remove */ function removeFlashBorrower(address borrower) external; /** * @notice Returns true if the address is FlashBorrower, false otherwise * @param borrower The address to check * @return True if the given address is FlashBorrower, false otherwise */ function isFlashBorrower(address borrower) external view returns (bool); /** * @notice Adds a new address as Bridge * @param bridge The address of the new Bridge */ function addBridge(address bridge) external; /** * @notice Removes an address as Bridge * @param bridge The address of the bridge to remove */ function removeBridge(address bridge) external; /** * @notice Returns true if the address is Bridge, false otherwise * @param bridge The address to check * @return True if the given address is Bridge, false otherwise */ function isBridge(address bridge) external view returns (bool); /** * @notice Adds a new admin as AssetListingAdmin * @param admin The address of the new admin */ function addAssetListingAdmin(address admin) external; /** * @notice Removes an admin as AssetListingAdmin * @param admin The address of the admin to remove */ function removeAssetListingAdmin(address admin) external; /** * @notice Returns true if the address is AssetListingAdmin, false otherwise * @param admin The address to check * @return True if the given address is AssetListingAdmin, false otherwise */ function isAssetListingAdmin(address admin) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {IPriceOracleGetter} from './IPriceOracleGetter.sol'; import {IPoolAddressesProvider} from './IPoolAddressesProvider.sol'; /** * @title IAaveOracle * @author Aave * @notice Defines the basic interface for the Aave Oracle */ interface IAaveOracle is IPriceOracleGetter { /** * @dev Emitted after the base currency is set * @param baseCurrency The base currency of used for price quotes * @param baseCurrencyUnit The unit of the base currency */ event BaseCurrencySet(address indexed baseCurrency, uint256 baseCurrencyUnit); /** * @dev Emitted after the price source of an asset is updated * @param asset The address of the asset * @param source The price source of the asset */ event AssetSourceUpdated(address indexed asset, address indexed source); /** * @dev Emitted after the address of fallback oracle is updated * @param fallbackOracle The address of the fallback oracle */ event FallbackOracleUpdated(address indexed fallbackOracle); /** * @notice Returns the PoolAddressesProvider * @return The address of the PoolAddressesProvider contract */ function ADDRESSES_PROVIDER() external view returns (IPoolAddressesProvider); /** * @notice Sets or replaces price sources of assets * @param assets The addresses of the assets * @param sources The addresses of the price sources */ function setAssetSources(address[] calldata assets, address[] calldata sources) external; /** * @notice Sets the fallback oracle * @param fallbackOracle The address of the fallback oracle */ function setFallbackOracle(address fallbackOracle) external; /** * @notice Returns a list of prices from a list of assets addresses * @param assets The list of assets addresses * @return The prices of the given assets */ function getAssetsPrices(address[] calldata assets) external view returns (uint256[] memory); /** * @notice Returns the address of the source for an asset address * @param asset The address of the asset * @return The address of the source */ function getSourceOfAsset(address asset) external view returns (address); /** * @notice Returns the address of the fallback oracle * @return The address of the fallback oracle */ function getFallbackOracle() external view returns (address); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {IPoolAddressesProvider} from './IPoolAddressesProvider.sol'; import {DataTypes} from '../protocol/libraries/types/DataTypes.sol'; /** * @title IPool * @author Aave * @notice Defines the basic interface for an Aave Pool. */ interface IPool { /** * @dev Emitted on mintUnbacked() * @param reserve The address of the underlying asset of the reserve * @param user The address initiating the supply * @param onBehalfOf The beneficiary of the supplied assets, receiving the aTokens * @param amount The amount of supplied assets * @param referralCode The referral code used */ event MintUnbacked( address indexed reserve, address user, address indexed onBehalfOf, uint256 amount, uint16 indexed referralCode ); /** * @dev Emitted on backUnbacked() * @param reserve The address of the underlying asset of the reserve * @param backer The address paying for the backing * @param amount The amount added as backing * @param fee The amount paid in fees */ event BackUnbacked(address indexed reserve, address indexed backer, uint256 amount, uint256 fee); /** * @dev Emitted on supply() * @param reserve The address of the underlying asset of the reserve * @param user The address initiating the supply * @param onBehalfOf The beneficiary of the supply, receiving the aTokens * @param amount The amount supplied * @param referralCode The referral code used */ event Supply( address indexed reserve, address user, address indexed onBehalfOf, uint256 amount, uint16 indexed referralCode ); /** * @dev Emitted on withdraw() * @param reserve The address of the underlying asset being withdrawn * @param user The address initiating the withdrawal, owner of aTokens * @param to The address that will receive the underlying * @param amount The amount to be withdrawn */ event Withdraw(address indexed reserve, address indexed user, address indexed to, uint256 amount); /** * @dev Emitted on borrow() and flashLoan() when debt needs to be opened * @param reserve The address of the underlying asset being borrowed * @param user The address of the user initiating the borrow(), receiving the funds on borrow() or just * initiator of the transaction on flashLoan() * @param onBehalfOf The address that will be getting the debt * @param amount The amount borrowed out * @param interestRateMode The rate mode: 2 for Variable, 1 is deprecated (changed on v3.2.0) * @param borrowRate The numeric rate at which the user has borrowed, expressed in ray * @param referralCode The referral code used */ event Borrow( address indexed reserve, address user, address indexed onBehalfOf, uint256 amount, DataTypes.InterestRateMode interestRateMode, uint256 borrowRate, uint16 indexed referralCode ); /** * @dev Emitted on repay() * @param reserve The address of the underlying asset of the reserve * @param user The beneficiary of the repayment, getting his debt reduced * @param repayer The address of the user initiating the repay(), providing the funds * @param amount The amount repaid * @param useATokens True if the repayment is done using aTokens, `false` if done with underlying asset directly */ event Repay( address indexed reserve, address indexed user, address indexed repayer, uint256 amount, bool useATokens ); /** * @dev Emitted on borrow(), repay() and liquidationCall() when using isolated assets * @param asset The address of the underlying asset of the reserve * @param totalDebt The total isolation mode debt for the reserve */ event IsolationModeTotalDebtUpdated(address indexed asset, uint256 totalDebt); /** * @dev Emitted when the user selects a certain asset category for eMode * @param user The address of the user * @param categoryId The category id */ event UserEModeSet(address indexed user, uint8 categoryId); /** * @dev Emitted on setUserUseReserveAsCollateral() * @param reserve The address of the underlying asset of the reserve * @param user The address of the user enabling the usage as collateral */ event ReserveUsedAsCollateralEnabled(address indexed reserve, address indexed user); /** * @dev Emitted on setUserUseReserveAsCollateral() * @param reserve The address of the underlying asset of the reserve * @param user The address of the user enabling the usage as collateral */ event ReserveUsedAsCollateralDisabled(address indexed reserve, address indexed user); /** * @dev Emitted on flashLoan() * @param target The address of the flash loan receiver contract * @param initiator The address initiating the flash loan * @param asset The address of the asset being flash borrowed * @param amount The amount flash borrowed * @param interestRateMode The flashloan mode: 0 for regular flashloan, * 1 for Stable (Deprecated on v3.2.0), 2 for Variable * @param premium The fee flash borrowed * @param referralCode The referral code used */ event FlashLoan( address indexed target, address initiator, address indexed asset, uint256 amount, DataTypes.InterestRateMode interestRateMode, uint256 premium, uint16 indexed referralCode ); /** * @dev Emitted when a borrower is liquidated. * @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation * @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation * @param user The address of the borrower getting liquidated * @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover * @param liquidatedCollateralAmount The amount of collateral received by the liquidator * @param liquidator The address of the liquidator * @param receiveAToken True if the liquidators wants to receive the collateral aTokens, `false` if he wants * to receive the underlying collateral asset directly */ event LiquidationCall( address indexed collateralAsset, address indexed debtAsset, address indexed user, uint256 debtToCover, uint256 liquidatedCollateralAmount, address liquidator, bool receiveAToken ); /** * @dev Emitted when the state of a reserve is updated. * @param reserve The address of the underlying asset of the reserve * @param liquidityRate The next liquidity rate * @param stableBorrowRate The next stable borrow rate @note deprecated on v3.2.0 * @param variableBorrowRate The next variable borrow rate * @param liquidityIndex The next liquidity index * @param variableBorrowIndex The next variable borrow index */ event ReserveDataUpdated( address indexed reserve, uint256 liquidityRate, uint256 stableBorrowRate, uint256 variableBorrowRate, uint256 liquidityIndex, uint256 variableBorrowIndex ); /** * @dev Emitted when the deficit of a reserve is covered. * @param reserve The address of the underlying asset of the reserve * @param caller The caller that triggered the DeficitCovered event * @param amountCovered The amount of deficit covered */ event DeficitCovered(address indexed reserve, address caller, uint256 amountCovered); /** * @dev Emitted when the protocol treasury receives minted aTokens from the accrued interest. * @param reserve The address of the reserve * @param amountMinted The amount minted to the treasury */ event MintedToTreasury(address indexed reserve, uint256 amountMinted); /** * @dev Emitted when deficit is realized on a liquidation. * @param user The user address where the bad debt will be burned * @param debtAsset The address of the underlying borrowed asset to be burned * @param amountCreated The amount of deficit created */ event DeficitCreated(address indexed user, address indexed debtAsset, uint256 amountCreated); /** * @notice Mints an `amount` of aTokens to the `onBehalfOf` * @param asset The address of the underlying asset to mint * @param amount The amount to mint * @param onBehalfOf The address that will receive the aTokens * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man */ function mintUnbacked( address asset, uint256 amount, address onBehalfOf, uint16 referralCode ) external; /** * @notice Back the current unbacked underlying with `amount` and pay `fee`. * @param asset The address of the underlying asset to back * @param amount The amount to back * @param fee The amount paid in fees * @return The backed amount */ function backUnbacked(address asset, uint256 amount, uint256 fee) external returns (uint256); /** * @notice Supplies an `amount` of underlying asset into the reserve, receiving in return overlying aTokens. * - E.g. User supplies 100 USDC and gets in return 100 aUSDC * @param asset The address of the underlying asset to supply * @param amount The amount to be supplied * @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user * wants to receive them on his own wallet, or a different address if the beneficiary of aTokens * is a different wallet * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man */ function supply(address asset, uint256 amount, address onBehalfOf, uint16 referralCode) external; /** * @notice Supply with transfer approval of asset to be supplied done via permit function * see: https://eips.ethereum.org/EIPS/eip-2612 and https://eips.ethereum.org/EIPS/eip-713 * @param asset The address of the underlying asset to supply * @param amount The amount to be supplied * @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user * wants to receive them on his own wallet, or a different address if the beneficiary of aTokens * is a different wallet * @param deadline The deadline timestamp that the permit is valid * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man * @param permitV The V parameter of ERC712 permit sig * @param permitR The R parameter of ERC712 permit sig * @param permitS The S parameter of ERC712 permit sig */ function supplyWithPermit( address asset, uint256 amount, address onBehalfOf, uint16 referralCode, uint256 deadline, uint8 permitV, bytes32 permitR, bytes32 permitS ) external; /** * @notice Withdraws an `amount` of underlying asset from the reserve, burning the equivalent aTokens owned * E.g. User has 100 aUSDC, calls withdraw() and receives 100 USDC, burning the 100 aUSDC * @param asset The address of the underlying asset to withdraw * @param amount The underlying amount to be withdrawn * - Send the value type(uint256).max in order to withdraw the whole aToken balance * @param to The address that will receive the underlying, same as msg.sender if the user * wants to receive it on his own wallet, or a different address if the beneficiary is a * different wallet * @return The final amount withdrawn */ function withdraw(address asset, uint256 amount, address to) external returns (uint256); /** * @notice Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower * already supplied enough collateral, or he was given enough allowance by a credit delegator on the VariableDebtToken * - E.g. User borrows 100 USDC passing as `onBehalfOf` his own address, receiving the 100 USDC in his wallet * and 100 variable debt tokens * @param asset The address of the underlying asset to borrow * @param amount The amount to be borrowed * @param interestRateMode 2 for Variable, 1 is deprecated on v3.2.0 * @param referralCode The code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man * @param onBehalfOf The address of the user who will receive the debt. Should be the address of the borrower itself * calling the function if he wants to borrow against his own collateral, or the address of the credit delegator * if he has been given credit delegation allowance */ function borrow( address asset, uint256 amount, uint256 interestRateMode, uint16 referralCode, address onBehalfOf ) external; /** * @notice Repays a borrowed `amount` on a specific reserve, burning the equivalent debt tokens owned * - E.g. User repays 100 USDC, burning 100 variable debt tokens of the `onBehalfOf` address * @param asset The address of the borrowed underlying asset previously borrowed * @param amount The amount to repay * - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode` * @param interestRateMode 2 for Variable, 1 is deprecated on v3.2.0 * @param onBehalfOf The address of the user who will get his debt reduced/removed. Should be the address of the * user calling the function if he wants to reduce/remove his own debt, or the address of any other * other borrower whose debt should be removed * @return The final amount repaid */ function repay( address asset, uint256 amount, uint256 interestRateMode, address onBehalfOf ) external returns (uint256); /** * @notice Repay with transfer approval of asset to be repaid done via permit function * see: https://eips.ethereum.org/EIPS/eip-2612 and https://eips.ethereum.org/EIPS/eip-713 * @param asset The address of the borrowed underlying asset previously borrowed * @param amount The amount to repay * - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode` * @param interestRateMode 2 for Variable, 1 is deprecated on v3.2.0 * @param onBehalfOf Address of the user who will get his debt reduced/removed. Should be the address of the * user calling the function if he wants to reduce/remove his own debt, or the address of any other * other borrower whose debt should be removed * @param deadline The deadline timestamp that the permit is valid * @param permitV The V parameter of ERC712 permit sig * @param permitR The R parameter of ERC712 permit sig * @param permitS The S parameter of ERC712 permit sig * @return The final amount repaid */ function repayWithPermit( address asset, uint256 amount, uint256 interestRateMode, address onBehalfOf, uint256 deadline, uint8 permitV, bytes32 permitR, bytes32 permitS ) external returns (uint256); /** * @notice Repays a borrowed `amount` on a specific reserve using the reserve aTokens, burning the * equivalent debt tokens * - E.g. User repays 100 USDC using 100 aUSDC, burning 100 variable debt tokens * @dev Passing uint256.max as amount will clean up any residual aToken dust balance, if the user aToken * balance is not enough to cover the whole debt * @param asset The address of the borrowed underlying asset previously borrowed * @param amount The amount to repay * - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode` * @param interestRateMode DEPRECATED in v3.2.0 * @return The final amount repaid */ function repayWithATokens( address asset, uint256 amount, uint256 interestRateMode ) external returns (uint256); /** * @notice Allows suppliers to enable/disable a specific supplied asset as collateral * @param asset The address of the underlying asset supplied * @param useAsCollateral True if the user wants to use the supply as collateral, false otherwise */ function setUserUseReserveAsCollateral(address asset, bool useAsCollateral) external; /** * @notice Function to liquidate a non-healthy position collateral-wise, with Health Factor below 1 * - The caller (liquidator) covers `debtToCover` amount of debt of the user getting liquidated, and receives * a proportionally amount of the `collateralAsset` plus a bonus to cover market risk * @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation * @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation * @param user The address of the borrower getting liquidated * @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover * @param receiveAToken True if the liquidators wants to receive the collateral aTokens, `false` if he wants * to receive the underlying collateral asset directly */ function liquidationCall( address collateralAsset, address debtAsset, address user, uint256 debtToCover, bool receiveAToken ) external; /** * @notice Allows smartcontracts to access the liquidity of the pool within one transaction, * as long as the amount taken plus a fee is returned. * @dev IMPORTANT There are security concerns for developers of flashloan receiver contracts that must be kept * into consideration. For further details please visit https://docs.aave.com/developers/ * @param receiverAddress The address of the contract receiving the funds, implementing IFlashLoanReceiver interface * @param assets The addresses of the assets being flash-borrowed * @param amounts The amounts of the assets being flash-borrowed * @param interestRateModes Types of the debt to open if the flash loan is not returned: * 0 -> Don't open any debt, just revert if funds can't be transferred from the receiver * 1 -> Deprecated on v3.2.0 * 2 -> Open debt at variable rate for the value of the amount flash-borrowed to the `onBehalfOf` address * @param onBehalfOf The address that will receive the debt in the case of using 2 on `modes` * @param params Variadic packed params to pass to the receiver as extra information * @param referralCode The code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man */ function flashLoan( address receiverAddress, address[] calldata assets, uint256[] calldata amounts, uint256[] calldata interestRateModes, address onBehalfOf, bytes calldata params, uint16 referralCode ) external; /** * @notice Allows smartcontracts to access the liquidity of the pool within one transaction, * as long as the amount taken plus a fee is returned. * @dev IMPORTANT There are security concerns for developers of flashloan receiver contracts that must be kept * into consideration. For further details please visit https://docs.aave.com/developers/ * @param receiverAddress The address of the contract receiving the funds, implementing IFlashLoanSimpleReceiver interface * @param asset The address of the asset being flash-borrowed * @param amount The amount of the asset being flash-borrowed * @param params Variadic packed params to pass to the receiver as extra information * @param referralCode The code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man */ function flashLoanSimple( address receiverAddress, address asset, uint256 amount, bytes calldata params, uint16 referralCode ) external; /** * @notice Returns the user account data across all the reserves * @param user The address of the user * @return totalCollateralBase The total collateral of the user in the base currency used by the price feed * @return totalDebtBase The total debt of the user in the base currency used by the price feed * @return availableBorrowsBase The borrowing power left of the user in the base currency used by the price feed * @return currentLiquidationThreshold The liquidation threshold of the user * @return ltv The loan to value of The user * @return healthFactor The current health factor of the user */ function getUserAccountData( address user ) external view returns ( uint256 totalCollateralBase, uint256 totalDebtBase, uint256 availableBorrowsBase, uint256 currentLiquidationThreshold, uint256 ltv, uint256 healthFactor ); /** * @notice Initializes a reserve, activating it, assigning an aToken and debt tokens and an * interest rate strategy * @dev Only callable by the PoolConfigurator contract * @param asset The address of the underlying asset of the reserve * @param aTokenAddress The address of the aToken that will be assigned to the reserve * @param variableDebtAddress The address of the VariableDebtToken that will be assigned to the reserve * @param interestRateStrategyAddress The address of the interest rate strategy contract */ function initReserve( address asset, address aTokenAddress, address variableDebtAddress, address interestRateStrategyAddress ) external; /** * @notice Drop a reserve * @dev Only callable by the PoolConfigurator contract * @dev Does not reset eMode flags, which must be considered when reusing the same reserve id for a different reserve. * @param asset The address of the underlying asset of the reserve */ function dropReserve(address asset) external; /** * @notice Updates the address of the interest rate strategy contract * @dev Only callable by the PoolConfigurator contract * @param asset The address of the underlying asset of the reserve * @param rateStrategyAddress The address of the interest rate strategy contract */ function setReserveInterestRateStrategyAddress( address asset, address rateStrategyAddress ) external; /** * @notice Accumulates interest to all indexes of the reserve * @dev Only callable by the PoolConfigurator contract * @dev To be used when required by the configurator, for example when updating interest rates strategy data * @param asset The address of the underlying asset of the reserve */ function syncIndexesState(address asset) external; /** * @notice Updates interest rates on the reserve data * @dev Only callable by the PoolConfigurator contract * @dev To be used when required by the configurator, for example when updating interest rates strategy data * @param asset The address of the underlying asset of the reserve */ function syncRatesState(address asset) external; /** * @notice Sets the configuration bitmap of the reserve as a whole * @dev Only callable by the PoolConfigurator contract * @param asset The address of the underlying asset of the reserve * @param configuration The new configuration bitmap */ function setConfiguration( address asset, DataTypes.ReserveConfigurationMap calldata configuration ) external; /** * @notice Returns the configuration of the reserve * @param asset The address of the underlying asset of the reserve * @return The configuration of the reserve */ function getConfiguration( address asset ) external view returns (DataTypes.ReserveConfigurationMap memory); /** * @notice Returns the configuration of the user across all the reserves * @param user The user address * @return The configuration of the user */ function getUserConfiguration( address user ) external view returns (DataTypes.UserConfigurationMap memory); /** * @notice Returns the normalized income of the reserve * @param asset The address of the underlying asset of the reserve * @return The reserve's normalized income */ function getReserveNormalizedIncome(address asset) external view returns (uint256); /** * @notice Returns the normalized variable debt per unit of asset * @dev WARNING: This function is intended to be used primarily by the protocol itself to get a * "dynamic" variable index based on time, current stored index and virtual rate at the current * moment (approx. a borrower would get if opening a position). This means that is always used in * combination with variable debt supply/balances. * If using this function externally, consider that is possible to have an increasing normalized * variable debt that is not equivalent to how the variable debt index would be updated in storage * (e.g. only updates with non-zero variable debt supply) * @param asset The address of the underlying asset of the reserve * @return The reserve normalized variable debt */ function getReserveNormalizedVariableDebt(address asset) external view returns (uint256); /** * @notice Returns the state and configuration of the reserve * @param asset The address of the underlying asset of the reserve * @return The state and configuration data of the reserve */ function getReserveData(address asset) external view returns (DataTypes.ReserveDataLegacy memory); /** * @notice Returns the virtual underlying balance of the reserve * @param asset The address of the underlying asset of the reserve * @return The reserve virtual underlying balance */ function getVirtualUnderlyingBalance(address asset) external view returns (uint128); /** * @notice Validates and finalizes an aToken transfer * @dev Only callable by the overlying aToken of the `asset` * @param asset The address of the underlying asset of the aToken * @param from The user from which the aTokens are transferred * @param to The user receiving the aTokens * @param amount The amount being transferred/withdrawn * @param balanceFromBefore The aToken balance of the `from` user before the transfer * @param balanceToBefore The aToken balance of the `to` user before the transfer */ function finalizeTransfer( address asset, address from, address to, uint256 amount, uint256 balanceFromBefore, uint256 balanceToBefore ) external; /** * @notice Returns the list of the underlying assets of all the initialized reserves * @dev It does not include dropped reserves * @return The addresses of the underlying assets of the initialized reserves */ function getReservesList() external view returns (address[] memory); /** * @notice Returns the number of initialized reserves * @dev It includes dropped reserves * @return The count */ function getReservesCount() external view returns (uint256); /** * @notice Returns the address of the underlying asset of a reserve by the reserve id as stored in the DataTypes.ReserveData struct * @param id The id of the reserve as stored in the DataTypes.ReserveData struct * @return The address of the reserve associated with id */ function getReserveAddressById(uint16 id) external view returns (address); /** * @notice Returns the PoolAddressesProvider connected to this contract * @return The address of the PoolAddressesProvider */ function ADDRESSES_PROVIDER() external view returns (IPoolAddressesProvider); /** * @notice Updates the protocol fee on the bridging * @param bridgeProtocolFee The part of the premium sent to the protocol treasury */ function updateBridgeProtocolFee(uint256 bridgeProtocolFee) external; /** * @notice Updates flash loan premiums. Flash loan premium consists of two parts: * - A part is sent to aToken holders as extra, one time accumulated interest * - A part is collected by the protocol treasury * @dev The total premium is calculated on the total borrowed amount * @dev The premium to protocol is calculated on the total premium, being a percentage of `flashLoanPremiumTotal` * @dev Only callable by the PoolConfigurator contract * @param flashLoanPremiumTotal The total premium, expressed in bps * @param flashLoanPremiumToProtocol The part of the premium sent to the protocol treasury, expressed in bps */ function updateFlashloanPremiums( uint128 flashLoanPremiumTotal, uint128 flashLoanPremiumToProtocol ) external; /** * @notice Configures a new or alters an existing collateral configuration of an eMode. * @dev In eMode, the protocol allows very high borrowing power to borrow assets of the same category. * The category 0 is reserved as it's the default for volatile assets * @param id The id of the category * @param config The configuration of the category */ function configureEModeCategory( uint8 id, DataTypes.EModeCategoryBaseConfiguration memory config ) external; /** * @notice Replaces the current eMode collateralBitmap. * @param id The id of the category * @param collateralBitmap The collateralBitmap of the category */ function configureEModeCategoryCollateralBitmap(uint8 id, uint128 collateralBitmap) external; /** * @notice Replaces the current eMode borrowableBitmap. * @param id The id of the category * @param borrowableBitmap The borrowableBitmap of the category */ function configureEModeCategoryBorrowableBitmap(uint8 id, uint128 borrowableBitmap) external; /** * @notice Returns the data of an eMode category * @dev DEPRECATED use independent getters instead * @param id The id of the category * @return The configuration data of the category */ function getEModeCategoryData( uint8 id ) external view returns (DataTypes.EModeCategoryLegacy memory); /** * @notice Returns the label of an eMode category * @param id The id of the category * @return The label of the category */ function getEModeCategoryLabel(uint8 id) external view returns (string memory); /** * @notice Returns the collateral config of an eMode category * @param id The id of the category * @return The ltv,lt,lb of the category */ function getEModeCategoryCollateralConfig( uint8 id ) external view returns (DataTypes.CollateralConfig memory); /** * @notice Returns the collateralBitmap of an eMode category * @param id The id of the category * @return The collateralBitmap of the category */ function getEModeCategoryCollateralBitmap(uint8 id) external view returns (uint128); /** * @notice Returns the borrowableBitmap of an eMode category * @param id The id of the category * @return The borrowableBitmap of the category */ function getEModeCategoryBorrowableBitmap(uint8 id) external view returns (uint128); /** * @notice Allows a user to use the protocol in eMode * @param categoryId The id of the category */ function setUserEMode(uint8 categoryId) external; /** * @notice Returns the eMode the user is using * @param user The address of the user * @return The eMode id */ function getUserEMode(address user) external view returns (uint256); /** * @notice Resets the isolation mode total debt of the given asset to zero * @dev It requires the given asset has zero debt ceiling * @param asset The address of the underlying asset to reset the isolationModeTotalDebt */ function resetIsolationModeTotalDebt(address asset) external; /** * @notice Sets the liquidation grace period of the given asset * @dev To enable a liquidation grace period, a timestamp in the future should be set, * To disable a liquidation grace period, any timestamp in the past works, like 0 * @param asset The address of the underlying asset to set the liquidationGracePeriod * @param until Timestamp when the liquidation grace period will end **/ function setLiquidationGracePeriod(address asset, uint40 until) external; /** * @notice Returns the liquidation grace period of the given asset * @param asset The address of the underlying asset * @return Timestamp when the liquidation grace period will end **/ function getLiquidationGracePeriod(address asset) external view returns (uint40); /** * @notice Returns the total fee on flash loans * @return The total fee on flashloans */ function FLASHLOAN_PREMIUM_TOTAL() external view returns (uint128); /** * @notice Returns the part of the bridge fees sent to protocol * @return The bridge fee sent to the protocol treasury */ function BRIDGE_PROTOCOL_FEE() external view returns (uint256); /** * @notice Returns the part of the flashloan fees sent to protocol * @return The flashloan fee sent to the protocol treasury */ function FLASHLOAN_PREMIUM_TO_PROTOCOL() external view returns (uint128); /** * @notice Returns the maximum number of reserves supported to be listed in this Pool * @return The maximum number of reserves supported */ function MAX_NUMBER_RESERVES() external view returns (uint16); /** * @notice Mints the assets accrued through the reserve factor to the treasury in the form of aTokens * @param assets The list of reserves for which the minting needs to be executed */ function mintToTreasury(address[] calldata assets) external; /** * @notice Rescue and transfer tokens locked in this contract * @param token The address of the token * @param to The address of the recipient * @param amount The amount of token to transfer */ function rescueTokens(address token, address to, uint256 amount) external; /** * @notice Supplies an `amount` of underlying asset into the reserve, receiving in return overlying aTokens. * - E.g. User supplies 100 USDC and gets in return 100 aUSDC * @dev Deprecated: Use the `supply` function instead * @param asset The address of the underlying asset to supply * @param amount The amount to be supplied * @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user * wants to receive them on his own wallet, or a different address if the beneficiary of aTokens * is a different wallet * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man */ function deposit(address asset, uint256 amount, address onBehalfOf, uint16 referralCode) external; /** * @notice It covers the deficit of a specified reserve by burning: * - the equivalent aToken `amount` for assets with virtual accounting enabled * - the equivalent `amount` of underlying for assets with virtual accounting disabled (e.g. GHO) * @dev The deficit of a reserve can occur due to situations where borrowed assets are not repaid, leading to bad debt. * @param asset The address of the underlying asset to cover the deficit. * @param amount The amount to be covered, in aToken or underlying on non-virtual accounted assets */ function eliminateReserveDeficit(address asset, uint256 amount) external; /** * @notice Returns the current deficit of a reserve. * @param asset The address of the underlying asset of the reserve * @return The current deficit of the reserve */ function getReserveDeficit(address asset) external view returns (uint256); /** * @notice Returns the aToken address of a reserve. * @param asset The address of the underlying asset of the reserve * @return The address of the aToken */ function getReserveAToken(address asset) external view returns (address); /** * @notice Returns the variableDebtToken address of a reserve. * @param asset The address of the underlying asset of the reserve * @return The address of the variableDebtToken */ function getReserveVariableDebtToken(address asset) external view returns (address); /** * @notice Gets the address of the external FlashLoanLogic */ function getFlashLoanLogic() external view returns (address); /** * @notice Gets the address of the external BorrowLogic */ function getBorrowLogic() external view returns (address); /** * @notice Gets the address of the external BridgeLogic */ function getBridgeLogic() external view returns (address); /** * @notice Gets the address of the external EModeLogic */ function getEModeLogic() external view returns (address); /** * @notice Gets the address of the external LiquidationLogic */ function getLiquidationLogic() external view returns (address); /** * @notice Gets the address of the external PoolLogic */ function getPoolLogic() external view returns (address); /** * @notice Gets the address of the external SupplyLogic */ function getSupplyLogic() external view returns (address); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title IPoolAddressesProvider * @author Aave * @notice Defines the basic interface for a Pool Addresses Provider. */ interface IPoolAddressesProvider { /** * @dev Emitted when the market identifier is updated. * @param oldMarketId The old id of the market * @param newMarketId The new id of the market */ event MarketIdSet(string indexed oldMarketId, string indexed newMarketId); /** * @dev Emitted when the pool is updated. * @param oldAddress The old address of the Pool * @param newAddress The new address of the Pool */ event PoolUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the pool configurator is updated. * @param oldAddress The old address of the PoolConfigurator * @param newAddress The new address of the PoolConfigurator */ event PoolConfiguratorUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the price oracle is updated. * @param oldAddress The old address of the PriceOracle * @param newAddress The new address of the PriceOracle */ event PriceOracleUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the ACL manager is updated. * @param oldAddress The old address of the ACLManager * @param newAddress The new address of the ACLManager */ event ACLManagerUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the ACL admin is updated. * @param oldAddress The old address of the ACLAdmin * @param newAddress The new address of the ACLAdmin */ event ACLAdminUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the price oracle sentinel is updated. * @param oldAddress The old address of the PriceOracleSentinel * @param newAddress The new address of the PriceOracleSentinel */ event PriceOracleSentinelUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the pool data provider is updated. * @param oldAddress The old address of the PoolDataProvider * @param newAddress The new address of the PoolDataProvider */ event PoolDataProviderUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when a new proxy is created. * @param id The identifier of the proxy * @param proxyAddress The address of the created proxy contract * @param implementationAddress The address of the implementation contract */ event ProxyCreated( bytes32 indexed id, address indexed proxyAddress, address indexed implementationAddress ); /** * @dev Emitted when a new non-proxied contract address is registered. * @param id The identifier of the contract * @param oldAddress The address of the old contract * @param newAddress The address of the new contract */ event AddressSet(bytes32 indexed id, address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the implementation of the proxy registered with id is updated * @param id The identifier of the contract * @param proxyAddress The address of the proxy contract * @param oldImplementationAddress The address of the old implementation contract * @param newImplementationAddress The address of the new implementation contract */ event AddressSetAsProxy( bytes32 indexed id, address indexed proxyAddress, address oldImplementationAddress, address indexed newImplementationAddress ); /** * @notice Returns the id of the Aave market to which this contract points to. * @return The market id */ function getMarketId() external view returns (string memory); /** * @notice Associates an id with a specific PoolAddressesProvider. * @dev This can be used to create an onchain registry of PoolAddressesProviders to * identify and validate multiple Aave markets. * @param newMarketId The market id */ function setMarketId(string calldata newMarketId) external; /** * @notice Returns an address by its identifier. * @dev The returned address might be an EOA or a contract, potentially proxied * @dev It returns ZERO if there is no registered address with the given id * @param id The id * @return The address of the registered for the specified id */ function getAddress(bytes32 id) external view returns (address); /** * @notice General function to update the implementation of a proxy registered with * certain `id`. If there is no proxy registered, it will instantiate one and * set as implementation the `newImplementationAddress`. * @dev IMPORTANT Use this function carefully, only for ids that don't have an explicit * setter function, in order to avoid unexpected consequences * @param id The id * @param newImplementationAddress The address of the new implementation */ function setAddressAsProxy(bytes32 id, address newImplementationAddress) external; /** * @notice Sets an address for an id replacing the address saved in the addresses map. * @dev IMPORTANT Use this function carefully, as it will do a hard replacement * @param id The id * @param newAddress The address to set */ function setAddress(bytes32 id, address newAddress) external; /** * @notice Returns the address of the Pool proxy. * @return The Pool proxy address */ function getPool() external view returns (address); /** * @notice Updates the implementation of the Pool, or creates a proxy * setting the new `pool` implementation when the function is called for the first time. * @param newPoolImpl The new Pool implementation */ function setPoolImpl(address newPoolImpl) external; /** * @notice Returns the address of the PoolConfigurator proxy. * @return The PoolConfigurator proxy address */ function getPoolConfigurator() external view returns (address); /** * @notice Updates the implementation of the PoolConfigurator, or creates a proxy * setting the new `PoolConfigurator` implementation when the function is called for the first time. * @param newPoolConfiguratorImpl The new PoolConfigurator implementation */ function setPoolConfiguratorImpl(address newPoolConfiguratorImpl) external; /** * @notice Returns the address of the price oracle. * @return The address of the PriceOracle */ function getPriceOracle() external view returns (address); /** * @notice Updates the address of the price oracle. * @param newPriceOracle The address of the new PriceOracle */ function setPriceOracle(address newPriceOracle) external; /** * @notice Returns the address of the ACL manager. * @return The address of the ACLManager */ function getACLManager() external view returns (address); /** * @notice Updates the address of the ACL manager. * @param newAclManager The address of the new ACLManager */ function setACLManager(address newAclManager) external; /** * @notice Returns the address of the ACL admin. * @return The address of the ACL admin */ function getACLAdmin() external view returns (address); /** * @notice Updates the address of the ACL admin. * @param newAclAdmin The address of the new ACL admin */ function setACLAdmin(address newAclAdmin) external; /** * @notice Returns the address of the price oracle sentinel. * @return The address of the PriceOracleSentinel */ function getPriceOracleSentinel() external view returns (address); /** * @notice Updates the address of the price oracle sentinel. * @param newPriceOracleSentinel The address of the new PriceOracleSentinel */ function setPriceOracleSentinel(address newPriceOracleSentinel) external; /** * @notice Returns the address of the data provider. * @return The address of the DataProvider */ function getPoolDataProvider() external view returns (address); /** * @notice Updates the address of the data provider. * @param newDataProvider The address of the new DataProvider */ function setPoolDataProvider(address newDataProvider) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title IPriceOracleGetter * @author Aave * @notice Interface for the Aave price oracle. */ interface IPriceOracleGetter { /** * @notice Returns the base currency address * @dev Address 0x0 is reserved for USD as base currency. * @return Returns the base currency address. */ function BASE_CURRENCY() external view returns (address); /** * @notice Returns the base currency unit * @dev 1 ether for ETH, 1e8 for USD. * @return Returns the base currency unit. */ function BASE_CURRENCY_UNIT() external view returns (uint256); /** * @notice Returns the asset price in the base currency * @param asset The address of the asset * @return The price of the asset */ function getAssetPrice(address asset) external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {Errors} from '../helpers/Errors.sol'; import {DataTypes} from '../types/DataTypes.sol'; /** * @title ReserveConfiguration library * @author Aave * @notice Implements the bitmap logic to handle the reserve configuration */ library ReserveConfiguration { uint256 internal constant LTV_MASK = 0x000000000000000000000000000000000000000000000000000000000000FFFF; // prettier-ignore uint256 internal constant LIQUIDATION_THRESHOLD_MASK = 0x00000000000000000000000000000000000000000000000000000000FFFF0000; // prettier-ignore uint256 internal constant LIQUIDATION_BONUS_MASK = 0x0000000000000000000000000000000000000000000000000000FFFF00000000; // prettier-ignore uint256 internal constant DECIMALS_MASK = 0x00000000000000000000000000000000000000000000000000FF000000000000; // prettier-ignore uint256 internal constant ACTIVE_MASK = 0x0000000000000000000000000000000000000000000000000100000000000000; // prettier-ignore uint256 internal constant FROZEN_MASK = 0x0000000000000000000000000000000000000000000000000200000000000000; // prettier-ignore uint256 internal constant BORROWING_MASK = 0x0000000000000000000000000000000000000000000000000400000000000000; // prettier-ignore // @notice there is an unoccupied hole of 1 bit at position 59 from pre 3.2 stableBorrowRateEnabled uint256 internal constant PAUSED_MASK = 0x0000000000000000000000000000000000000000000000001000000000000000; // prettier-ignore uint256 internal constant BORROWABLE_IN_ISOLATION_MASK = 0x0000000000000000000000000000000000000000000000002000000000000000; // prettier-ignore uint256 internal constant SILOED_BORROWING_MASK = 0x0000000000000000000000000000000000000000000000004000000000000000; // prettier-ignore uint256 internal constant FLASHLOAN_ENABLED_MASK = 0x0000000000000000000000000000000000000000000000008000000000000000; // prettier-ignore uint256 internal constant RESERVE_FACTOR_MASK = 0x00000000000000000000000000000000000000000000FFFF0000000000000000; // prettier-ignore uint256 internal constant BORROW_CAP_MASK = 0x00000000000000000000000000000000000FFFFFFFFF00000000000000000000; // prettier-ignore uint256 internal constant SUPPLY_CAP_MASK = 0x00000000000000000000000000FFFFFFFFF00000000000000000000000000000; // prettier-ignore uint256 internal constant LIQUIDATION_PROTOCOL_FEE_MASK = 0x0000000000000000000000FFFF00000000000000000000000000000000000000; // prettier-ignore //@notice there is an unoccupied hole of 8 bits from 168 to 176 left from pre 3.2 eModeCategory uint256 internal constant UNBACKED_MINT_CAP_MASK = 0x00000000000FFFFFFFFF00000000000000000000000000000000000000000000; // prettier-ignore uint256 internal constant DEBT_CEILING_MASK = 0x0FFFFFFFFFF00000000000000000000000000000000000000000000000000000; // prettier-ignore uint256 internal constant VIRTUAL_ACC_ACTIVE_MASK = 0x1000000000000000000000000000000000000000000000000000000000000000; // prettier-ignore /// @dev For the LTV, the start bit is 0 (up to 15), hence no bitshifting is needed uint256 internal constant LIQUIDATION_THRESHOLD_START_BIT_POSITION = 16; uint256 internal constant LIQUIDATION_BONUS_START_BIT_POSITION = 32; uint256 internal constant RESERVE_DECIMALS_START_BIT_POSITION = 48; uint256 internal constant IS_ACTIVE_START_BIT_POSITION = 56; uint256 internal constant IS_FROZEN_START_BIT_POSITION = 57; uint256 internal constant BORROWING_ENABLED_START_BIT_POSITION = 58; uint256 internal constant IS_PAUSED_START_BIT_POSITION = 60; uint256 internal constant BORROWABLE_IN_ISOLATION_START_BIT_POSITION = 61; uint256 internal constant SILOED_BORROWING_START_BIT_POSITION = 62; uint256 internal constant FLASHLOAN_ENABLED_START_BIT_POSITION = 63; uint256 internal constant RESERVE_FACTOR_START_BIT_POSITION = 64; uint256 internal constant BORROW_CAP_START_BIT_POSITION = 80; uint256 internal constant SUPPLY_CAP_START_BIT_POSITION = 116; uint256 internal constant LIQUIDATION_PROTOCOL_FEE_START_BIT_POSITION = 152; //@notice there is an unoccupied hole of 8 bits from 168 to 176 left from pre 3.2 eModeCategory uint256 internal constant UNBACKED_MINT_CAP_START_BIT_POSITION = 176; uint256 internal constant DEBT_CEILING_START_BIT_POSITION = 212; uint256 internal constant VIRTUAL_ACC_START_BIT_POSITION = 252; uint256 internal constant MAX_VALID_LTV = 65535; uint256 internal constant MAX_VALID_LIQUIDATION_THRESHOLD = 65535; uint256 internal constant MAX_VALID_LIQUIDATION_BONUS = 65535; uint256 internal constant MAX_VALID_DECIMALS = 255; uint256 internal constant MAX_VALID_RESERVE_FACTOR = 65535; uint256 internal constant MAX_VALID_BORROW_CAP = 68719476735; uint256 internal constant MAX_VALID_SUPPLY_CAP = 68719476735; uint256 internal constant MAX_VALID_LIQUIDATION_PROTOCOL_FEE = 65535; uint256 internal constant MAX_VALID_UNBACKED_MINT_CAP = 68719476735; uint256 internal constant MAX_VALID_DEBT_CEILING = 1099511627775; uint256 public constant DEBT_CEILING_DECIMALS = 2; uint16 public constant MAX_RESERVES_COUNT = 128; /** * @notice Sets the Loan to Value of the reserve * @param self The reserve configuration * @param ltv The new ltv */ function setLtv(DataTypes.ReserveConfigurationMap memory self, uint256 ltv) internal pure { require(ltv <= MAX_VALID_LTV, Errors.INVALID_LTV); self.data = (self.data & ~LTV_MASK) | ltv; } /** * @notice Gets the Loan to Value of the reserve * @param self The reserve configuration * @return The loan to value */ function getLtv(DataTypes.ReserveConfigurationMap memory self) internal pure returns (uint256) { return self.data & LTV_MASK; } /** * @notice Sets the liquidation threshold of the reserve * @param self The reserve configuration * @param threshold The new liquidation threshold */ function setLiquidationThreshold( DataTypes.ReserveConfigurationMap memory self, uint256 threshold ) internal pure { require(threshold <= MAX_VALID_LIQUIDATION_THRESHOLD, Errors.INVALID_LIQ_THRESHOLD); self.data = (self.data & ~LIQUIDATION_THRESHOLD_MASK) | (threshold << LIQUIDATION_THRESHOLD_START_BIT_POSITION); } /** * @notice Gets the liquidation threshold of the reserve * @param self The reserve configuration * @return The liquidation threshold */ function getLiquidationThreshold( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & LIQUIDATION_THRESHOLD_MASK) >> LIQUIDATION_THRESHOLD_START_BIT_POSITION; } /** * @notice Sets the liquidation bonus of the reserve * @param self The reserve configuration * @param bonus The new liquidation bonus */ function setLiquidationBonus( DataTypes.ReserveConfigurationMap memory self, uint256 bonus ) internal pure { require(bonus <= MAX_VALID_LIQUIDATION_BONUS, Errors.INVALID_LIQ_BONUS); self.data = (self.data & ~LIQUIDATION_BONUS_MASK) | (bonus << LIQUIDATION_BONUS_START_BIT_POSITION); } /** * @notice Gets the liquidation bonus of the reserve * @param self The reserve configuration * @return The liquidation bonus */ function getLiquidationBonus( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & LIQUIDATION_BONUS_MASK) >> LIQUIDATION_BONUS_START_BIT_POSITION; } /** * @notice Sets the decimals of the underlying asset of the reserve * @param self The reserve configuration * @param decimals The decimals */ function setDecimals( DataTypes.ReserveConfigurationMap memory self, uint256 decimals ) internal pure { require(decimals <= MAX_VALID_DECIMALS, Errors.INVALID_DECIMALS); self.data = (self.data & ~DECIMALS_MASK) | (decimals << RESERVE_DECIMALS_START_BIT_POSITION); } /** * @notice Gets the decimals of the underlying asset of the reserve * @param self The reserve configuration * @return The decimals of the asset */ function getDecimals( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & DECIMALS_MASK) >> RESERVE_DECIMALS_START_BIT_POSITION; } /** * @notice Sets the active state of the reserve * @param self The reserve configuration * @param active The active state */ function setActive(DataTypes.ReserveConfigurationMap memory self, bool active) internal pure { self.data = (self.data & ~ACTIVE_MASK) | (uint256(active ? 1 : 0) << IS_ACTIVE_START_BIT_POSITION); } /** * @notice Gets the active state of the reserve * @param self The reserve configuration * @return The active state */ function getActive(DataTypes.ReserveConfigurationMap memory self) internal pure returns (bool) { return (self.data & ACTIVE_MASK) != 0; } /** * @notice Sets the frozen state of the reserve * @param self The reserve configuration * @param frozen The frozen state */ function setFrozen(DataTypes.ReserveConfigurationMap memory self, bool frozen) internal pure { self.data = (self.data & ~FROZEN_MASK) | (uint256(frozen ? 1 : 0) << IS_FROZEN_START_BIT_POSITION); } /** * @notice Gets the frozen state of the reserve * @param self The reserve configuration * @return The frozen state */ function getFrozen(DataTypes.ReserveConfigurationMap memory self) internal pure returns (bool) { return (self.data & FROZEN_MASK) != 0; } /** * @notice Sets the paused state of the reserve * @param self The reserve configuration * @param paused The paused state */ function setPaused(DataTypes.ReserveConfigurationMap memory self, bool paused) internal pure { self.data = (self.data & ~PAUSED_MASK) | (uint256(paused ? 1 : 0) << IS_PAUSED_START_BIT_POSITION); } /** * @notice Gets the paused state of the reserve * @param self The reserve configuration * @return The paused state */ function getPaused(DataTypes.ReserveConfigurationMap memory self) internal pure returns (bool) { return (self.data & PAUSED_MASK) != 0; } /** * @notice Sets the borrowable in isolation flag for the reserve. * @dev When this flag is set to true, the asset will be borrowable against isolated collaterals and the borrowed * amount will be accumulated in the isolated collateral's total debt exposure. * @dev Only assets of the same family (eg USD stablecoins) should be borrowable in isolation mode to keep * consistency in the debt ceiling calculations. * @param self The reserve configuration * @param borrowable True if the asset is borrowable */ function setBorrowableInIsolation( DataTypes.ReserveConfigurationMap memory self, bool borrowable ) internal pure { self.data = (self.data & ~BORROWABLE_IN_ISOLATION_MASK) | (uint256(borrowable ? 1 : 0) << BORROWABLE_IN_ISOLATION_START_BIT_POSITION); } /** * @notice Gets the borrowable in isolation flag for the reserve. * @dev If the returned flag is true, the asset is borrowable against isolated collateral. Assets borrowed with * isolated collateral is accounted for in the isolated collateral's total debt exposure. * @dev Only assets of the same family (eg USD stablecoins) should be borrowable in isolation mode to keep * consistency in the debt ceiling calculations. * @param self The reserve configuration * @return The borrowable in isolation flag */ function getBorrowableInIsolation( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (bool) { return (self.data & BORROWABLE_IN_ISOLATION_MASK) != 0; } /** * @notice Sets the siloed borrowing flag for the reserve. * @dev When this flag is set to true, users borrowing this asset will not be allowed to borrow any other asset. * @param self The reserve configuration * @param siloed True if the asset is siloed */ function setSiloedBorrowing( DataTypes.ReserveConfigurationMap memory self, bool siloed ) internal pure { self.data = (self.data & ~SILOED_BORROWING_MASK) | (uint256(siloed ? 1 : 0) << SILOED_BORROWING_START_BIT_POSITION); } /** * @notice Gets the siloed borrowing flag for the reserve. * @dev When this flag is set to true, users borrowing this asset will not be allowed to borrow any other asset. * @param self The reserve configuration * @return The siloed borrowing flag */ function getSiloedBorrowing( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (bool) { return (self.data & SILOED_BORROWING_MASK) != 0; } /** * @notice Enables or disables borrowing on the reserve * @param self The reserve configuration * @param enabled True if the borrowing needs to be enabled, false otherwise */ function setBorrowingEnabled( DataTypes.ReserveConfigurationMap memory self, bool enabled ) internal pure { self.data = (self.data & ~BORROWING_MASK) | (uint256(enabled ? 1 : 0) << BORROWING_ENABLED_START_BIT_POSITION); } /** * @notice Gets the borrowing state of the reserve * @param self The reserve configuration * @return The borrowing state */ function getBorrowingEnabled( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (bool) { return (self.data & BORROWING_MASK) != 0; } /** * @notice Sets the reserve factor of the reserve * @param self The reserve configuration * @param reserveFactor The reserve factor */ function setReserveFactor( DataTypes.ReserveConfigurationMap memory self, uint256 reserveFactor ) internal pure { require(reserveFactor <= MAX_VALID_RESERVE_FACTOR, Errors.INVALID_RESERVE_FACTOR); self.data = (self.data & ~RESERVE_FACTOR_MASK) | (reserveFactor << RESERVE_FACTOR_START_BIT_POSITION); } /** * @notice Gets the reserve factor of the reserve * @param self The reserve configuration * @return The reserve factor */ function getReserveFactor( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & RESERVE_FACTOR_MASK) >> RESERVE_FACTOR_START_BIT_POSITION; } /** * @notice Sets the borrow cap of the reserve * @param self The reserve configuration * @param borrowCap The borrow cap */ function setBorrowCap( DataTypes.ReserveConfigurationMap memory self, uint256 borrowCap ) internal pure { require(borrowCap <= MAX_VALID_BORROW_CAP, Errors.INVALID_BORROW_CAP); self.data = (self.data & ~BORROW_CAP_MASK) | (borrowCap << BORROW_CAP_START_BIT_POSITION); } /** * @notice Gets the borrow cap of the reserve * @param self The reserve configuration * @return The borrow cap */ function getBorrowCap( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & BORROW_CAP_MASK) >> BORROW_CAP_START_BIT_POSITION; } /** * @notice Sets the supply cap of the reserve * @param self The reserve configuration * @param supplyCap The supply cap */ function setSupplyCap( DataTypes.ReserveConfigurationMap memory self, uint256 supplyCap ) internal pure { require(supplyCap <= MAX_VALID_SUPPLY_CAP, Errors.INVALID_SUPPLY_CAP); self.data = (self.data & ~SUPPLY_CAP_MASK) | (supplyCap << SUPPLY_CAP_START_BIT_POSITION); } /** * @notice Gets the supply cap of the reserve * @param self The reserve configuration * @return The supply cap */ function getSupplyCap( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & SUPPLY_CAP_MASK) >> SUPPLY_CAP_START_BIT_POSITION; } /** * @notice Sets the debt ceiling in isolation mode for the asset * @param self The reserve configuration * @param ceiling The maximum debt ceiling for the asset */ function setDebtCeiling( DataTypes.ReserveConfigurationMap memory self, uint256 ceiling ) internal pure { require(ceiling <= MAX_VALID_DEBT_CEILING, Errors.INVALID_DEBT_CEILING); self.data = (self.data & ~DEBT_CEILING_MASK) | (ceiling << DEBT_CEILING_START_BIT_POSITION); } /** * @notice Gets the debt ceiling for the asset if the asset is in isolation mode * @param self The reserve configuration * @return The debt ceiling (0 = isolation mode disabled) */ function getDebtCeiling( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & DEBT_CEILING_MASK) >> DEBT_CEILING_START_BIT_POSITION; } /** * @notice Sets the liquidation protocol fee of the reserve * @param self The reserve configuration * @param liquidationProtocolFee The liquidation protocol fee */ function setLiquidationProtocolFee( DataTypes.ReserveConfigurationMap memory self, uint256 liquidationProtocolFee ) internal pure { require( liquidationProtocolFee <= MAX_VALID_LIQUIDATION_PROTOCOL_FEE, Errors.INVALID_LIQUIDATION_PROTOCOL_FEE ); self.data = (self.data & ~LIQUIDATION_PROTOCOL_FEE_MASK) | (liquidationProtocolFee << LIQUIDATION_PROTOCOL_FEE_START_BIT_POSITION); } /** * @dev Gets the liquidation protocol fee * @param self The reserve configuration * @return The liquidation protocol fee */ function getLiquidationProtocolFee( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & LIQUIDATION_PROTOCOL_FEE_MASK) >> LIQUIDATION_PROTOCOL_FEE_START_BIT_POSITION; } /** * @notice Sets the unbacked mint cap of the reserve * @param self The reserve configuration * @param unbackedMintCap The unbacked mint cap */ function setUnbackedMintCap( DataTypes.ReserveConfigurationMap memory self, uint256 unbackedMintCap ) internal pure { require(unbackedMintCap <= MAX_VALID_UNBACKED_MINT_CAP, Errors.INVALID_UNBACKED_MINT_CAP); self.data = (self.data & ~UNBACKED_MINT_CAP_MASK) | (unbackedMintCap << UNBACKED_MINT_CAP_START_BIT_POSITION); } /** * @dev Gets the unbacked mint cap of the reserve * @param self The reserve configuration * @return The unbacked mint cap */ function getUnbackedMintCap( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & UNBACKED_MINT_CAP_MASK) >> UNBACKED_MINT_CAP_START_BIT_POSITION; } /** * @notice Sets the flashloanable flag for the reserve * @param self The reserve configuration * @param flashLoanEnabled True if the asset is flashloanable, false otherwise */ function setFlashLoanEnabled( DataTypes.ReserveConfigurationMap memory self, bool flashLoanEnabled ) internal pure { self.data = (self.data & ~FLASHLOAN_ENABLED_MASK) | (uint256(flashLoanEnabled ? 1 : 0) << FLASHLOAN_ENABLED_START_BIT_POSITION); } /** * @notice Gets the flashloanable flag for the reserve * @param self The reserve configuration * @return The flashloanable flag */ function getFlashLoanEnabled( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (bool) { return (self.data & FLASHLOAN_ENABLED_MASK) != 0; } /** * @notice Sets the virtual account active/not state of the reserve * @param self The reserve configuration * @param active The active state */ function setVirtualAccActive( DataTypes.ReserveConfigurationMap memory self, bool active ) internal pure { self.data = (self.data & ~VIRTUAL_ACC_ACTIVE_MASK) | (uint256(active ? 1 : 0) << VIRTUAL_ACC_START_BIT_POSITION); } /** * @notice Gets the virtual account active/not state of the reserve * @dev The state should be true for all normal assets and should be false * Virtual accounting being disabled means that the asset: * - is GHO * - can never be supplied * - the interest rate strategy is not influenced by the virtual balance * @param self The reserve configuration * @return The active state */ function getIsVirtualAccActive( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (bool) { return (self.data & VIRTUAL_ACC_ACTIVE_MASK) != 0; } /** * @notice Gets the configuration flags of the reserve * @param self The reserve configuration * @return The state flag representing active * @return The state flag representing frozen * @return The state flag representing borrowing enabled * @return The state flag representing paused */ function getFlags( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (bool, bool, bool, bool) { uint256 dataLocal = self.data; return ( (dataLocal & ACTIVE_MASK) != 0, (dataLocal & FROZEN_MASK) != 0, (dataLocal & BORROWING_MASK) != 0, (dataLocal & PAUSED_MASK) != 0 ); } /** * @notice Gets the configuration parameters of the reserve from storage * @param self The reserve configuration * @return The state param representing ltv * @return The state param representing liquidation threshold * @return The state param representing liquidation bonus * @return The state param representing reserve decimals * @return The state param representing reserve factor */ function getParams( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256, uint256, uint256, uint256, uint256) { uint256 dataLocal = self.data; return ( dataLocal & LTV_MASK, (dataLocal & LIQUIDATION_THRESHOLD_MASK) >> LIQUIDATION_THRESHOLD_START_BIT_POSITION, (dataLocal & LIQUIDATION_BONUS_MASK) >> LIQUIDATION_BONUS_START_BIT_POSITION, (dataLocal & DECIMALS_MASK) >> RESERVE_DECIMALS_START_BIT_POSITION, (dataLocal & RESERVE_FACTOR_MASK) >> RESERVE_FACTOR_START_BIT_POSITION ); } /** * @notice Gets the caps parameters of the reserve from storage * @param self The reserve configuration * @return The state param representing borrow cap * @return The state param representing supply cap. */ function getCaps( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256, uint256) { uint256 dataLocal = self.data; return ( (dataLocal & BORROW_CAP_MASK) >> BORROW_CAP_START_BIT_POSITION, (dataLocal & SUPPLY_CAP_MASK) >> SUPPLY_CAP_START_BIT_POSITION ); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title Errors library * @author Aave * @notice Defines the error messages emitted by the different contracts of the Aave protocol */ library Errors { string public constant CALLER_NOT_POOL_ADMIN = '1'; // 'The caller of the function is not a pool admin' string public constant CALLER_NOT_EMERGENCY_ADMIN = '2'; // 'The caller of the function is not an emergency admin' string public constant CALLER_NOT_POOL_OR_EMERGENCY_ADMIN = '3'; // 'The caller of the function is not a pool or emergency admin' string public constant CALLER_NOT_RISK_OR_POOL_ADMIN = '4'; // 'The caller of the function is not a risk or pool admin' string public constant CALLER_NOT_ASSET_LISTING_OR_POOL_ADMIN = '5'; // 'The caller of the function is not an asset listing or pool admin' string public constant CALLER_NOT_BRIDGE = '6'; // 'The caller of the function is not a bridge' string public constant ADDRESSES_PROVIDER_NOT_REGISTERED = '7'; // 'Pool addresses provider is not registered' string public constant INVALID_ADDRESSES_PROVIDER_ID = '8'; // 'Invalid id for the pool addresses provider' string public constant NOT_CONTRACT = '9'; // 'Address is not a contract' string public constant CALLER_NOT_POOL_CONFIGURATOR = '10'; // 'The caller of the function is not the pool configurator' string public constant CALLER_NOT_ATOKEN = '11'; // 'The caller of the function is not an AToken' string public constant INVALID_ADDRESSES_PROVIDER = '12'; // 'The address of the pool addresses provider is invalid' string public constant INVALID_FLASHLOAN_EXECUTOR_RETURN = '13'; // 'Invalid return value of the flashloan executor function' string public constant RESERVE_ALREADY_ADDED = '14'; // 'Reserve has already been added to reserve list' string public constant NO_MORE_RESERVES_ALLOWED = '15'; // 'Maximum amount of reserves in the pool reached' string public constant EMODE_CATEGORY_RESERVED = '16'; // 'Zero eMode category is reserved for volatile heterogeneous assets' string public constant INVALID_EMODE_CATEGORY_ASSIGNMENT = '17'; // 'Invalid eMode category assignment to asset' string public constant RESERVE_LIQUIDITY_NOT_ZERO = '18'; // 'The liquidity of the reserve needs to be 0' string public constant FLASHLOAN_PREMIUM_INVALID = '19'; // 'Invalid flashloan premium' string public constant INVALID_RESERVE_PARAMS = '20'; // 'Invalid risk parameters for the reserve' string public constant INVALID_EMODE_CATEGORY_PARAMS = '21'; // 'Invalid risk parameters for the eMode category' string public constant BRIDGE_PROTOCOL_FEE_INVALID = '22'; // 'Invalid bridge protocol fee' string public constant CALLER_MUST_BE_POOL = '23'; // 'The caller of this function must be a pool' string public constant INVALID_MINT_AMOUNT = '24'; // 'Invalid amount to mint' string public constant INVALID_BURN_AMOUNT = '25'; // 'Invalid amount to burn' string public constant INVALID_AMOUNT = '26'; // 'Amount must be greater than 0' string public constant RESERVE_INACTIVE = '27'; // 'Action requires an active reserve' string public constant RESERVE_FROZEN = '28'; // 'Action cannot be performed because the reserve is frozen' string public constant RESERVE_PAUSED = '29'; // 'Action cannot be performed because the reserve is paused' string public constant BORROWING_NOT_ENABLED = '30'; // 'Borrowing is not enabled' string public constant NOT_ENOUGH_AVAILABLE_USER_BALANCE = '32'; // 'User cannot withdraw more than the available balance' string public constant INVALID_INTEREST_RATE_MODE_SELECTED = '33'; // 'Invalid interest rate mode selected' string public constant COLLATERAL_BALANCE_IS_ZERO = '34'; // 'The collateral balance is 0' string public constant HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD = '35'; // 'Health factor is lesser than the liquidation threshold' string public constant COLLATERAL_CANNOT_COVER_NEW_BORROW = '36'; // 'There is not enough collateral to cover a new borrow' string public constant COLLATERAL_SAME_AS_BORROWING_CURRENCY = '37'; // 'Collateral is (mostly) the same currency that is being borrowed' string public constant NO_DEBT_OF_SELECTED_TYPE = '39'; // 'For repayment of a specific type of debt, the user needs to have debt that type' string public constant NO_EXPLICIT_AMOUNT_TO_REPAY_ON_BEHALF = '40'; // 'To repay on behalf of a user an explicit amount to repay is needed' string public constant NO_OUTSTANDING_VARIABLE_DEBT = '42'; // 'User does not have outstanding variable rate debt on this reserve' string public constant UNDERLYING_BALANCE_ZERO = '43'; // 'The underlying balance needs to be greater than 0' string public constant INTEREST_RATE_REBALANCE_CONDITIONS_NOT_MET = '44'; // 'Interest rate rebalance conditions were not met' string public constant HEALTH_FACTOR_NOT_BELOW_THRESHOLD = '45'; // 'Health factor is not below the threshold' string public constant COLLATERAL_CANNOT_BE_LIQUIDATED = '46'; // 'The collateral chosen cannot be liquidated' string public constant SPECIFIED_CURRENCY_NOT_BORROWED_BY_USER = '47'; // 'User did not borrow the specified currency' string public constant INCONSISTENT_FLASHLOAN_PARAMS = '49'; // 'Inconsistent flashloan parameters' string public constant BORROW_CAP_EXCEEDED = '50'; // 'Borrow cap is exceeded' string public constant SUPPLY_CAP_EXCEEDED = '51'; // 'Supply cap is exceeded' string public constant UNBACKED_MINT_CAP_EXCEEDED = '52'; // 'Unbacked mint cap is exceeded' string public constant DEBT_CEILING_EXCEEDED = '53'; // 'Debt ceiling is exceeded' string public constant UNDERLYING_CLAIMABLE_RIGHTS_NOT_ZERO = '54'; // 'Claimable rights over underlying not zero (aToken supply or accruedToTreasury)' string public constant VARIABLE_DEBT_SUPPLY_NOT_ZERO = '56'; // 'Variable debt supply is not zero' string public constant LTV_VALIDATION_FAILED = '57'; // 'Ltv validation failed' string public constant INCONSISTENT_EMODE_CATEGORY = '58'; // 'Inconsistent eMode category' string public constant PRICE_ORACLE_SENTINEL_CHECK_FAILED = '59'; // 'Price oracle sentinel validation failed' string public constant ASSET_NOT_BORROWABLE_IN_ISOLATION = '60'; // 'Asset is not borrowable in isolation mode' string public constant RESERVE_ALREADY_INITIALIZED = '61'; // 'Reserve has already been initialized' string public constant USER_IN_ISOLATION_MODE_OR_LTV_ZERO = '62'; // 'User is in isolation mode or ltv is zero' string public constant INVALID_LTV = '63'; // 'Invalid ltv parameter for the reserve' string public constant INVALID_LIQ_THRESHOLD = '64'; // 'Invalid liquidity threshold parameter for the reserve' string public constant INVALID_LIQ_BONUS = '65'; // 'Invalid liquidity bonus parameter for the reserve' string public constant INVALID_DECIMALS = '66'; // 'Invalid decimals parameter of the underlying asset of the reserve' string public constant INVALID_RESERVE_FACTOR = '67'; // 'Invalid reserve factor parameter for the reserve' string public constant INVALID_BORROW_CAP = '68'; // 'Invalid borrow cap for the reserve' string public constant INVALID_SUPPLY_CAP = '69'; // 'Invalid supply cap for the reserve' string public constant INVALID_LIQUIDATION_PROTOCOL_FEE = '70'; // 'Invalid liquidation protocol fee for the reserve' string public constant INVALID_EMODE_CATEGORY = '71'; // 'Invalid eMode category for the reserve' string public constant INVALID_UNBACKED_MINT_CAP = '72'; // 'Invalid unbacked mint cap for the reserve' string public constant INVALID_DEBT_CEILING = '73'; // 'Invalid debt ceiling for the reserve string public constant INVALID_RESERVE_INDEX = '74'; // 'Invalid reserve index' string public constant ACL_ADMIN_CANNOT_BE_ZERO = '75'; // 'ACL admin cannot be set to the zero address' string public constant INCONSISTENT_PARAMS_LENGTH = '76'; // 'Array parameters that should be equal length are not' string public constant ZERO_ADDRESS_NOT_VALID = '77'; // 'Zero address not valid' string public constant INVALID_EXPIRATION = '78'; // 'Invalid expiration' string public constant INVALID_SIGNATURE = '79'; // 'Invalid signature' string public constant OPERATION_NOT_SUPPORTED = '80'; // 'Operation not supported' string public constant DEBT_CEILING_NOT_ZERO = '81'; // 'Debt ceiling is not zero' string public constant ASSET_NOT_LISTED = '82'; // 'Asset is not listed' string public constant INVALID_OPTIMAL_USAGE_RATIO = '83'; // 'Invalid optimal usage ratio' string public constant UNDERLYING_CANNOT_BE_RESCUED = '85'; // 'The underlying asset cannot be rescued' string public constant ADDRESSES_PROVIDER_ALREADY_ADDED = '86'; // 'Reserve has already been added to reserve list' string public constant POOL_ADDRESSES_DO_NOT_MATCH = '87'; // 'The token implementation pool address and the pool address provided by the initializing pool do not match' string public constant SILOED_BORROWING_VIOLATION = '89'; // 'User is trying to borrow multiple assets including a siloed one' string public constant RESERVE_DEBT_NOT_ZERO = '90'; // the total debt of the reserve needs to be 0 string public constant FLASHLOAN_DISABLED = '91'; // FlashLoaning for this asset is disabled string public constant INVALID_MAX_RATE = '92'; // The expect maximum borrow rate is invalid string public constant WITHDRAW_TO_ATOKEN = '93'; // Withdrawing to the aToken is not allowed string public constant SUPPLY_TO_ATOKEN = '94'; // Supplying to the aToken is not allowed string public constant SLOPE_2_MUST_BE_GTE_SLOPE_1 = '95'; // Variable interest rate slope 2 can not be lower than slope 1 string public constant CALLER_NOT_RISK_OR_POOL_OR_EMERGENCY_ADMIN = '96'; // 'The caller of the function is not a risk, pool or emergency admin' string public constant LIQUIDATION_GRACE_SENTINEL_CHECK_FAILED = '97'; // 'Liquidation grace sentinel validation failed' string public constant INVALID_GRACE_PERIOD = '98'; // Grace period above a valid range string public constant INVALID_FREEZE_STATE = '99'; // Reserve is already in the passed freeze state string public constant NOT_BORROWABLE_IN_EMODE = '100'; // Asset not borrowable in eMode string public constant CALLER_NOT_UMBRELLA = '101'; // The caller of the function is not the umbrella contract string public constant RESERVE_NOT_IN_DEFICIT = '102'; // The reserve is not in deficit string public constant MUST_NOT_LEAVE_DUST = '103'; // Below a certain threshold liquidators need to take the full position string public constant USER_CANNOT_HAVE_DEBT = '104'; // Thrown when a user tries to interact with a method that requires a position without debt }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; library DataTypes { /** * This exists specifically to maintain the `getReserveData()` interface, since the new, internal * `ReserveData` struct includes the reserve's `virtualUnderlyingBalance`. */ struct ReserveDataLegacy { //stores the reserve configuration ReserveConfigurationMap configuration; //the liquidity index. Expressed in ray uint128 liquidityIndex; //the current supply rate. Expressed in ray uint128 currentLiquidityRate; //variable borrow index. Expressed in ray uint128 variableBorrowIndex; //the current variable borrow rate. Expressed in ray uint128 currentVariableBorrowRate; // DEPRECATED on v3.2.0 uint128 currentStableBorrowRate; //timestamp of last update uint40 lastUpdateTimestamp; //the id of the reserve. Represents the position in the list of the active reserves uint16 id; //aToken address address aTokenAddress; // DEPRECATED on v3.2.0 address stableDebtTokenAddress; //variableDebtToken address address variableDebtTokenAddress; //address of the interest rate strategy address interestRateStrategyAddress; //the current treasury balance, scaled uint128 accruedToTreasury; //the outstanding unbacked aTokens minted through the bridging feature uint128 unbacked; //the outstanding debt borrowed against this asset in isolation mode uint128 isolationModeTotalDebt; } struct ReserveData { //stores the reserve configuration ReserveConfigurationMap configuration; //the liquidity index. Expressed in ray uint128 liquidityIndex; //the current supply rate. Expressed in ray uint128 currentLiquidityRate; //variable borrow index. Expressed in ray uint128 variableBorrowIndex; //the current variable borrow rate. Expressed in ray uint128 currentVariableBorrowRate; /// @notice reused `__deprecatedStableBorrowRate` storage from pre 3.2 // the current accumulate deficit in underlying tokens uint128 deficit; //timestamp of last update uint40 lastUpdateTimestamp; //the id of the reserve. Represents the position in the list of the active reserves uint16 id; //timestamp until when liquidations are not allowed on the reserve, if set to past liquidations will be allowed uint40 liquidationGracePeriodUntil; //aToken address address aTokenAddress; // DEPRECATED on v3.2.0 address __deprecatedStableDebtTokenAddress; //variableDebtToken address address variableDebtTokenAddress; //address of the interest rate strategy address interestRateStrategyAddress; //the current treasury balance, scaled uint128 accruedToTreasury; //the outstanding unbacked aTokens minted through the bridging feature uint128 unbacked; //the outstanding debt borrowed against this asset in isolation mode uint128 isolationModeTotalDebt; //the amount of underlying accounted for by the protocol uint128 virtualUnderlyingBalance; } struct ReserveConfigurationMap { //bit 0-15: LTV //bit 16-31: Liq. threshold //bit 32-47: Liq. bonus //bit 48-55: Decimals //bit 56: reserve is active //bit 57: reserve is frozen //bit 58: borrowing is enabled //bit 59: DEPRECATED: stable rate borrowing enabled //bit 60: asset is paused //bit 61: borrowing in isolation mode is enabled //bit 62: siloed borrowing enabled //bit 63: flashloaning enabled //bit 64-79: reserve factor //bit 80-115: borrow cap in whole tokens, borrowCap == 0 => no cap //bit 116-151: supply cap in whole tokens, supplyCap == 0 => no cap //bit 152-167: liquidation protocol fee //bit 168-175: DEPRECATED: eMode category //bit 176-211: unbacked mint cap in whole tokens, unbackedMintCap == 0 => minting disabled //bit 212-251: debt ceiling for isolation mode with (ReserveConfiguration::DEBT_CEILING_DECIMALS) decimals //bit 252: virtual accounting is enabled for the reserve //bit 253-255 unused uint256 data; } struct UserConfigurationMap { /** * @dev Bitmap of the users collaterals and borrows. It is divided in pairs of bits, one pair per asset. * The first bit indicates if an asset is used as collateral by the user, the second whether an * asset is borrowed by the user. */ uint256 data; } // DEPRECATED: kept for backwards compatibility, might be removed in a future version struct EModeCategoryLegacy { // each eMode category has a custom ltv and liquidation threshold uint16 ltv; uint16 liquidationThreshold; uint16 liquidationBonus; // DEPRECATED address priceSource; string label; } struct CollateralConfig { uint16 ltv; uint16 liquidationThreshold; uint16 liquidationBonus; } struct EModeCategoryBaseConfiguration { uint16 ltv; uint16 liquidationThreshold; uint16 liquidationBonus; string label; } struct EModeCategory { // each eMode category has a custom ltv and liquidation threshold uint16 ltv; uint16 liquidationThreshold; uint16 liquidationBonus; uint128 collateralBitmap; string label; uint128 borrowableBitmap; } enum InterestRateMode { NONE, __DEPRECATED, VARIABLE } struct ReserveCache { uint256 currScaledVariableDebt; uint256 nextScaledVariableDebt; uint256 currLiquidityIndex; uint256 nextLiquidityIndex; uint256 currVariableBorrowIndex; uint256 nextVariableBorrowIndex; uint256 currLiquidityRate; uint256 currVariableBorrowRate; uint256 reserveFactor; ReserveConfigurationMap reserveConfiguration; address aTokenAddress; address variableDebtTokenAddress; uint40 reserveLastUpdateTimestamp; } struct ExecuteLiquidationCallParams { uint256 reservesCount; uint256 debtToCover; address collateralAsset; address debtAsset; address user; bool receiveAToken; address priceOracle; uint8 userEModeCategory; address priceOracleSentinel; } struct ExecuteSupplyParams { address asset; uint256 amount; address onBehalfOf; uint16 referralCode; } struct ExecuteBorrowParams { address asset; address user; address onBehalfOf; uint256 amount; InterestRateMode interestRateMode; uint16 referralCode; bool releaseUnderlying; uint256 reservesCount; address oracle; uint8 userEModeCategory; address priceOracleSentinel; } struct ExecuteRepayParams { address asset; uint256 amount; InterestRateMode interestRateMode; address onBehalfOf; bool useATokens; } struct ExecuteWithdrawParams { address asset; uint256 amount; address to; uint256 reservesCount; address oracle; uint8 userEModeCategory; } struct ExecuteEliminateDeficitParams { address asset; uint256 amount; } struct ExecuteSetUserEModeParams { uint256 reservesCount; address oracle; uint8 categoryId; } struct FinalizeTransferParams { address asset; address from; address to; uint256 amount; uint256 balanceFromBefore; uint256 balanceToBefore; uint256 reservesCount; address oracle; uint8 fromEModeCategory; } struct FlashloanParams { address receiverAddress; address[] assets; uint256[] amounts; uint256[] interestRateModes; address onBehalfOf; bytes params; uint16 referralCode; uint256 flashLoanPremiumToProtocol; uint256 flashLoanPremiumTotal; uint256 reservesCount; address addressesProvider; address pool; uint8 userEModeCategory; bool isAuthorizedFlashBorrower; } struct FlashloanSimpleParams { address receiverAddress; address asset; uint256 amount; bytes params; uint16 referralCode; uint256 flashLoanPremiumToProtocol; uint256 flashLoanPremiumTotal; } struct FlashLoanRepaymentParams { uint256 amount; uint256 totalPremium; uint256 flashLoanPremiumToProtocol; address asset; address receiverAddress; uint16 referralCode; } struct CalculateUserAccountDataParams { UserConfigurationMap userConfig; uint256 reservesCount; address user; address oracle; uint8 userEModeCategory; } struct ValidateBorrowParams { ReserveCache reserveCache; UserConfigurationMap userConfig; address asset; address userAddress; uint256 amount; InterestRateMode interestRateMode; uint256 reservesCount; address oracle; uint8 userEModeCategory; address priceOracleSentinel; bool isolationModeActive; address isolationModeCollateralAddress; uint256 isolationModeDebtCeiling; } struct ValidateLiquidationCallParams { ReserveCache debtReserveCache; uint256 totalDebt; uint256 healthFactor; address priceOracleSentinel; } struct CalculateInterestRatesParams { uint256 unbacked; uint256 liquidityAdded; uint256 liquidityTaken; uint256 totalDebt; uint256 reserveFactor; address reserve; bool usingVirtualBalance; uint256 virtualUnderlyingBalance; } struct InitReserveParams { address asset; address aTokenAddress; address variableDebtAddress; address interestRateStrategyAddress; uint16 reservesCount; uint16 maxNumberReserves; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.10; import {IRewardsDistributor} from './IRewardsDistributor.sol'; import {ITransferStrategyBase} from './ITransferStrategyBase.sol'; import {AggregatorInterface} from '../../dependencies/chainlink/AggregatorInterface.sol'; import {RewardsDataTypes} from '../libraries/RewardsDataTypes.sol'; /** * @title IRewardsController * @author Aave * @notice Defines the basic interface for a Rewards Controller. */ interface IRewardsController is IRewardsDistributor { /** * @dev Emitted when a new address is whitelisted as claimer of rewards on behalf of a user * @param user The address of the user * @param claimer The address of the claimer */ event ClaimerSet(address indexed user, address indexed claimer); /** * @dev Emitted when rewards are claimed * @param user The address of the user rewards has been claimed on behalf of * @param reward The address of the token reward is claimed * @param to The address of the receiver of the rewards * @param claimer The address of the claimer * @param amount The amount of rewards claimed */ event RewardsClaimed( address indexed user, address indexed reward, address indexed to, address claimer, uint256 amount ); /** * @dev Emitted when a transfer strategy is installed for the reward distribution * @param reward The address of the token reward * @param transferStrategy The address of TransferStrategy contract */ event TransferStrategyInstalled(address indexed reward, address indexed transferStrategy); /** * @dev Emitted when the reward oracle is updated * @param reward The address of the token reward * @param rewardOracle The address of oracle */ event RewardOracleUpdated(address indexed reward, address indexed rewardOracle); /** * @dev Whitelists an address to claim the rewards on behalf of another address * @param user The address of the user * @param claimer The address of the claimer */ function setClaimer(address user, address claimer) external; /** * @dev Sets a TransferStrategy logic contract that determines the logic of the rewards transfer * @param reward The address of the reward token * @param transferStrategy The address of the TransferStrategy logic contract */ function setTransferStrategy(address reward, ITransferStrategyBase transferStrategy) external; /** * @dev Sets an Aave Oracle contract to enforce rewards with a source of value. * @notice At the moment of reward configuration, the Incentives Controller performs * a check to see if the reward asset oracle is compatible with IEACAggregator proxy. * This check is enforced for integrators to be able to show incentives at * the current Aave UI without the need to setup an external price registry * @param reward The address of the reward to set the price aggregator * @param rewardOracle The address of price aggregator that follows AggregatorInterface interface */ function setRewardOracle(address reward, AggregatorInterface rewardOracle) external; /** * @dev Get the price aggregator oracle address * @param reward The address of the reward * @return The price oracle of the reward */ function getRewardOracle(address reward) external view returns (address); /** * @dev Returns the whitelisted claimer for a certain address (0x0 if not set) * @param user The address of the user * @return The claimer address */ function getClaimer(address user) external view returns (address); /** * @dev Returns the Transfer Strategy implementation contract address being used for a reward address * @param reward The address of the reward * @return The address of the TransferStrategy contract */ function getTransferStrategy(address reward) external view returns (address); /** * @dev Configure assets to incentivize with an emission of rewards per second until the end of distribution. * @param config The assets configuration input, the list of structs contains the following fields: * uint104 emissionPerSecond: The emission per second following rewards unit decimals. * uint256 totalSupply: The total supply of the asset to incentivize * uint40 distributionEnd: The end of the distribution of the incentives for an asset * address asset: The asset address to incentivize * address reward: The reward token address * ITransferStrategy transferStrategy: The TransferStrategy address with the install hook and claim logic. * AggregatorInterface rewardOracle: The Price Oracle of a reward to visualize the incentives at the UI Frontend. * Must follow Chainlink Aggregator AggregatorInterface interface to be compatible. */ function configureAssets(RewardsDataTypes.RewardsConfigInput[] memory config) external; /** * @dev Called by the corresponding asset on transfer hook in order to update the rewards distribution. * @dev The units of `totalSupply` and `userBalance` should be the same. * @param user The address of the user whose asset balance has changed * @param totalSupply The total supply of the asset prior to user balance change * @param userBalance The previous user balance prior to balance change **/ function handleAction(address user, uint256 totalSupply, uint256 userBalance) external; /** * @dev Claims reward for a user to the desired address, on all the assets of the pool, accumulating the pending rewards * @param assets List of assets to check eligible distributions before claiming rewards * @param amount The amount of rewards to claim * @param to The address that will be receiving the rewards * @param reward The address of the reward token * @return The amount of rewards claimed **/ function claimRewards( address[] calldata assets, uint256 amount, address to, address reward ) external returns (uint256); /** * @dev Claims reward for a user on behalf, on all the assets of the pool, accumulating the pending rewards. The * caller must be whitelisted via "allowClaimOnBehalf" function by the RewardsAdmin role manager * @param assets The list of assets to check eligible distributions before claiming rewards * @param amount The amount of rewards to claim * @param user The address to check and claim rewards * @param to The address that will be receiving the rewards * @param reward The address of the reward token * @return The amount of rewards claimed **/ function claimRewardsOnBehalf( address[] calldata assets, uint256 amount, address user, address to, address reward ) external returns (uint256); /** * @dev Claims reward for msg.sender, on all the assets of the pool, accumulating the pending rewards * @param assets The list of assets to check eligible distributions before claiming rewards * @param amount The amount of rewards to claim * @param reward The address of the reward token * @return The amount of rewards claimed **/ function claimRewardsToSelf( address[] calldata assets, uint256 amount, address reward ) external returns (uint256); /** * @dev Claims all rewards for a user to the desired address, on all the assets of the pool, accumulating the pending rewards * @param assets The list of assets to check eligible distributions before claiming rewards * @param to The address that will be receiving the rewards * @return rewardsList List of addresses of the reward tokens * @return claimedAmounts List that contains the claimed amount per reward, following same order as "rewardList" **/ function claimAllRewards( address[] calldata assets, address to ) external returns (address[] memory rewardsList, uint256[] memory claimedAmounts); /** * @dev Claims all rewards for a user on behalf, on all the assets of the pool, accumulating the pending rewards. The caller must * be whitelisted via "allowClaimOnBehalf" function by the RewardsAdmin role manager * @param assets The list of assets to check eligible distributions before claiming rewards * @param user The address to check and claim rewards * @param to The address that will be receiving the rewards * @return rewardsList List of addresses of the reward tokens * @return claimedAmounts List that contains the claimed amount per reward, following same order as "rewardsList" **/ function claimAllRewardsOnBehalf( address[] calldata assets, address user, address to ) external returns (address[] memory rewardsList, uint256[] memory claimedAmounts); /** * @dev Claims all reward for msg.sender, on all the assets of the pool, accumulating the pending rewards * @param assets The list of assets to check eligible distributions before claiming rewards * @return rewardsList List of addresses of the reward tokens * @return claimedAmounts List that contains the claimed amount per reward, following same order as "rewardsList" **/ function claimAllRewardsToSelf( address[] calldata assets ) external returns (address[] memory rewardsList, uint256[] memory claimedAmounts); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.10; /** * @title IRewardsDistributor * @author Aave * @notice Defines the basic interface for a Rewards Distributor. */ interface IRewardsDistributor { /** * @dev Emitted when the configuration of the rewards of an asset is updated. * @param asset The address of the incentivized asset * @param reward The address of the reward token * @param oldEmission The old emissions per second value of the reward distribution * @param newEmission The new emissions per second value of the reward distribution * @param oldDistributionEnd The old end timestamp of the reward distribution * @param newDistributionEnd The new end timestamp of the reward distribution * @param assetIndex The index of the asset distribution */ event AssetConfigUpdated( address indexed asset, address indexed reward, uint256 oldEmission, uint256 newEmission, uint256 oldDistributionEnd, uint256 newDistributionEnd, uint256 assetIndex ); /** * @dev Emitted when rewards of an asset are accrued on behalf of a user. * @param asset The address of the incentivized asset * @param reward The address of the reward token * @param user The address of the user that rewards are accrued on behalf of * @param assetIndex The index of the asset distribution * @param userIndex The index of the asset distribution on behalf of the user * @param rewardsAccrued The amount of rewards accrued */ event Accrued( address indexed asset, address indexed reward, address indexed user, uint256 assetIndex, uint256 userIndex, uint256 rewardsAccrued ); /** * @dev Sets the end date for the distribution * @param asset The asset to incentivize * @param reward The reward token that incentives the asset * @param newDistributionEnd The end date of the incentivization, in unix time format **/ function setDistributionEnd(address asset, address reward, uint32 newDistributionEnd) external; /** * @dev Sets the emission per second of a set of reward distributions * @param asset The asset is being incentivized * @param rewards List of reward addresses are being distributed * @param newEmissionsPerSecond List of new reward emissions per second */ function setEmissionPerSecond( address asset, address[] calldata rewards, uint88[] calldata newEmissionsPerSecond ) external; /** * @dev Gets the end date for the distribution * @param asset The incentivized asset * @param reward The reward token of the incentivized asset * @return The timestamp with the end of the distribution, in unix time format **/ function getDistributionEnd(address asset, address reward) external view returns (uint256); /** * @dev Returns the index of a user on a reward distribution * @param user Address of the user * @param asset The incentivized asset * @param reward The reward token of the incentivized asset * @return The current user asset index, not including new distributions **/ function getUserAssetIndex( address user, address asset, address reward ) external view returns (uint256); /** * @dev Returns the configuration of the distribution reward for a certain asset * @param asset The incentivized asset * @param reward The reward token of the incentivized asset * @return The index of the asset distribution * @return The emission per second of the reward distribution * @return The timestamp of the last update of the index * @return The timestamp of the distribution end **/ function getRewardsData( address asset, address reward ) external view returns (uint256, uint256, uint256, uint256); /** * @dev Calculates the next value of an specific distribution index, with validations. * @param asset The incentivized asset * @param reward The reward token of the incentivized asset * @return The old index of the asset distribution * @return The new index of the asset distribution **/ function getAssetIndex(address asset, address reward) external view returns (uint256, uint256); /** * @dev Returns the list of available reward token addresses of an incentivized asset * @param asset The incentivized asset * @return List of rewards addresses of the input asset **/ function getRewardsByAsset(address asset) external view returns (address[] memory); /** * @dev Returns the list of available reward addresses * @return List of rewards supported in this contract **/ function getRewardsList() external view returns (address[] memory); /** * @dev Returns the accrued rewards balance of a user, not including virtually accrued rewards since last distribution. * @param user The address of the user * @param reward The address of the reward token * @return Unclaimed rewards, not including new distributions **/ function getUserAccruedRewards(address user, address reward) external view returns (uint256); /** * @dev Returns a single rewards balance of a user, including virtually accrued and unrealized claimable rewards. * @param assets List of incentivized assets to check eligible distributions * @param user The address of the user * @param reward The address of the reward token * @return The rewards amount **/ function getUserRewards( address[] calldata assets, address user, address reward ) external view returns (uint256); /** * @dev Returns a list all rewards of a user, including already accrued and unrealized claimable rewards * @param assets List of incentivized assets to check eligible distributions * @param user The address of the user * @return The list of reward addresses * @return The list of unclaimed amount of rewards **/ function getAllUserRewards( address[] calldata assets, address user ) external view returns (address[] memory, uint256[] memory); /** * @dev Returns the decimals of an asset to calculate the distribution delta * @param asset The address to retrieve decimals * @return The decimals of an underlying asset */ function getAssetDecimals(address asset) external view returns (uint8); /** * @dev Returns the address of the emission manager * @return The address of the EmissionManager */ function EMISSION_MANAGER() external view returns (address); /** * @dev Returns the address of the emission manager. * Deprecated: This getter is maintained for compatibility purposes. Use the `EMISSION_MANAGER()` function instead. * @return The address of the EmissionManager */ function getEmissionManager() external view returns (address); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.10; interface ITransferStrategyBase { event EmergencyWithdrawal( address indexed caller, address indexed token, address indexed to, uint256 amount ); /** * @dev Perform custom transfer logic via delegate call from source contract to a TransferStrategy implementation * @param to Account to transfer rewards * @param reward Address of the reward token * @param amount Amount to transfer to the "to" address parameter * @return Returns true bool if transfer logic succeeds */ function performTransfer(address to, address reward, uint256 amount) external returns (bool); /** * @return Returns the address of the Incentives Controller */ function getIncentivesController() external view returns (address); /** * @return Returns the address of the Rewards admin */ function getRewardsAdmin() external view returns (address); /** * @dev Perform an emergency token withdrawal only callable by the Rewards admin * @param token Address of the token to withdraw funds from this contract * @param to Address of the recipient of the withdrawal * @param amount Amount of the withdrawal */ function emergencyWithdrawal(address token, address to, uint256 amount) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.10; import {ITransferStrategyBase} from '../interfaces/ITransferStrategyBase.sol'; import {AggregatorInterface} from '../../dependencies/chainlink/AggregatorInterface.sol'; library RewardsDataTypes { struct RewardsConfigInput { uint88 emissionPerSecond; uint256 totalSupply; uint32 distributionEnd; address asset; address reward; ITransferStrategyBase transferStrategy; AggregatorInterface rewardOracle; } struct UserAssetBalance { address asset; uint256 userBalance; uint256 totalSupply; } struct UserData { // Liquidity index of the reward distribution for the user uint104 index; // Amount of accrued rewards for the user since last user index update uint128 accrued; } struct RewardData { // Liquidity index of the reward distribution uint104 index; // Amount of reward tokens distributed per second uint88 emissionPerSecond; // Timestamp of the last reward index update uint32 lastUpdateTimestamp; // The end of the distribution of rewards (in seconds) uint32 distributionEnd; // Map of user addresses and their rewards data (userAddress => userData) mapping(address => UserData) usersData; } struct AssetData { // Map of reward token addresses and their data (rewardTokenAddress => rewardData) mapping(address => RewardData) rewards; // List of reward token addresses for the asset mapping(uint128 => address) availableRewards; // Count of reward tokens for the asset uint128 availableRewardsCount; // Number of decimals of the asset uint8 decimals; } }
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Contract Security Audit
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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000002816cf15f6d2a220e789aa011d5ee4eb6c47feba000000000000000000000000d93e3ae8f69d04d484d1652ca569d4b0522414df
-----Decoded View---------------
Arg [0] : pool (address): 0x2816cf15F6d2A220E789aA011D5EE4eB6c47FEbA
Arg [1] : rewardsController (address): 0xD93e3Ae8f69D04d484d1652Ca569d4b0522414DF
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000002816cf15f6d2a220e789aa011d5ee4eb6c47feba
Arg [1] : 000000000000000000000000d93e3ae8f69d04d484d1652ca569d4b0522414df
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Multichain Portfolio | 31 Chains
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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.