Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- AggregatedPriceOracle
- Optimization enabled
- true
- Compiler version
- v0.8.17+commit.8df45f5f
- Optimization runs
- 200
- EVM Version
- default
- Verified at
- 2024-06-02T10:45:32.491997Z
Constructor Arguments
0x00000000000000000000000066f850099e6d5dbd712d15244b65bd822f36be7e
Arg [0] (address) : 0x66f850099e6d5dbd712d15244b65bd822f36be7e
contracts/multichain/taiko/AggregatedPriceOracle.sol
// SPDX-License-Identifier: BSD-3-Clause pragma solidity 0.8.17; import "@openzeppelin/contracts/access/AccessControl.sol"; import "@openzeppelin/contracts/utils/math/SafeCast.sol"; import "@api3/contracts/v0.8/interfaces/IProxy.sol"; import "../../interfaces/IMToken.sol"; import "../../interfaces/IPriceOracle.sol"; import "../../libraries/ErrorCodes.sol"; contract AggregatedPriceOracle is IPriceOracle, AccessControl { using SafeCast for uint256; using SafeCast for int256; /** * @notice List of supported oracle providers */ enum OracleProviderType { Api3, // For some tokens we can use multiplication of two oracles // For example, for mETH we use mETH/ETH and ETH/USD oracles Api3Aggregated } /** * @notice Structure to store oracle related data for the token */ struct TokenConfig { /// @dev The price feed contract address. address proxyPriceFeedAddress; /// @dev Second price feed (for Api3Aggregated oracle provider) address secondaryProxyPriceFeedAddress; /// @dev Maximum age of the on-chain price in seconds. uint32 maxValidPriceAge; // @dev Original token decimals uint32 underlyingTokenDecimals; // @dev For some tokens we use token-specific oracle providers OracleProviderType oracleProviderType; } event NewTokenConfigSet( address token, address proxyPriceFeedAddress, address secondaryProxyPriceFeedAddress, uint32 maxValidPriceAge, uint32 underlyingTokenDecimals, OracleProviderType oracleProviderType ); /// @dev Mapping to store oracle related configuration for tokens mapping(address => TokenConfig) public feedProxies; /** * @notice Construct a AggregatedPriceOracle contract. * @param admin The address of the Admin */ constructor(address admin) { _grantRole(DEFAULT_ADMIN_ROLE, admin); } function pow10(uint8 power) private pure returns (uint256) { if (power == 22) return 1e22; else if (power == 20) return 1e20; else if (power == 10) return 1e10; else if (power == 1) return 1e1; else if (power == 2) return 1e2; else if (power == 3) return 1e3; else if (power == 4) return 1e4; else if (power == 5) return 1e5; else if (power == 6) return 1e6; else if (power == 7) return 1e7; else if (power == 8) return 1e8; else if (power == 9) return 1e9; else if (power == 11) return 1e11; else if (power == 12) return 1e12; else if (power == 13) return 1e13; else if (power == 14) return 1e14; else if (power == 15) return 1e15; else if (power == 16) return 1e16; else if (power == 17) return 1e17; else if (power == 18) return 1e18; else if (power == 19) return 1e19; else if (power == 21) return 1e21; else if (power == 23) return 1e23; else if (power == 24) return 1e24; else if (power == 25) return 1e25; else if (power == 26) return 1e26; else if (power == 27) return 1e27; else if (power == 28) return 1e28; else if (power == 29) return 1e29; else if (power == 30) return 1e30; else if (power == 31) return 1e31; else if (power == 32) return 1e32; else if (power == 33) return 1e33; else if (power == 34) return 1e34; else if (power == 35) return 1e35; else return 1e36; } /** * @notice Convert price received from oracle to be scaled by (36 - tokenDecimals) * @param config token config * @param reportedPrice raw oracle price * @return price scaled by (36 - tokenDecimals) */ function convertReportedPrice(TokenConfig memory config, int224 reportedPrice) internal pure returns (uint256) { require(reportedPrice > 0, ErrorCodes.REPORTED_PRICE_SHOULD_BE_GREATER_THAN_ZERO); uint256 unsignedPrice = uint256(uint224(reportedPrice)); if (config.underlyingTokenDecimals == 18) return unsignedPrice; uint8 multiplier = 18 - uint8(config.underlyingTokenDecimals); return unsignedPrice * pow10(multiplier); } /// @inheritdoc IPriceOracle function getUnderlyingPrice(IMToken mToken) external view returns (uint256) { require(address(mToken) != address(0), ErrorCodes.MTOKEN_ADDRESS_CANNOT_BE_ZERO); return getAssetPrice(address(mToken.underlying())); } /// @inheritdoc IPriceOracle function getAssetPrice(address underlyingAsset) public view returns (uint256) { require(underlyingAsset != address(0), ErrorCodes.TOKEN_ADDRESS_CANNOT_BE_ZERO); TokenConfig memory config = feedProxies[underlyingAsset]; require(config.proxyPriceFeedAddress != address(0), ErrorCodes.PRICE_FEED_ADDRESS_NOT_FOUND); (int224 currentPrice, uint32 publishTime) = getRawPrice(config); require(block.timestamp - publishTime <= config.maxValidPriceAge, ErrorCodes.ORACLE_PRICE_EXPIRED); return convertReportedPrice(config, currentPrice); } /** * @notice Return price and timestamp with regards to the oracle provider type * @param config Token config */ function getRawPrice(TokenConfig memory config) internal view returns (int224, uint32) { if (config.oracleProviderType == OracleProviderType.Api3) { (int224 price, uint32 timestamp) = IProxy(config.proxyPriceFeedAddress).read(); return (price, timestamp); } else if (config.oracleProviderType == OracleProviderType.Api3Aggregated) { (int224 price1, uint32 timestamp1) = IProxy(config.proxyPriceFeedAddress).read(); (int224 price2, uint32 timestamp2) = IProxy(config.secondaryProxyPriceFeedAddress).read(); int224 price = (price1 * price2) / 1e18; uint32 timestamp = timestamp1 > timestamp2 ? timestamp2 : timestamp1; return (price, timestamp); } else { revert("Incorrect oracle provider type"); } } /** * @notice Set the price config for a underlying asset * @param underlyingAsset The address of underlying asset to set the price oracle for * @param proxyPriceFeedAddress The address of price feed contract * @param maxValidPriceAge Maximum age of the on-chain price in seconds. * @param underlyingTokenDecimals Original token decimals * @param oracleProviderType The identification of the oracle provider * @dev RESTRICTION: Admin only */ function setTokenConfig( address underlyingAsset, address proxyPriceFeedAddress, address secondaryProxyPriceFeedAddress, uint32 maxValidPriceAge, uint32 underlyingTokenDecimals, OracleProviderType oracleProviderType ) external onlyRole(DEFAULT_ADMIN_ROLE) { require(underlyingAsset != address(0), ErrorCodes.TOKEN_ADDRESS_CANNOT_BE_ZERO); require(proxyPriceFeedAddress != address(0), ErrorCodes.OR_INCORRECT_PRICE_FEED_ADDRESS); require( (secondaryProxyPriceFeedAddress != address(0) && oracleProviderType == OracleProviderType.Api3Aggregated) || (secondaryProxyPriceFeedAddress == address(0) && oracleProviderType != OracleProviderType.Api3Aggregated), ErrorCodes.OR_INCORRECT_SECONDARY_PRICE_FEED_ADDRESS ); require(maxValidPriceAge > 0, ErrorCodes.OR_PRICE_AGE_CAN_NOT_BE_ZERO); require(underlyingTokenDecimals > 0, ErrorCodes.OR_UNDERLYING_TOKENS_DECIMALS_SHOULD_BE_GREATER_THAN_ZERO); require(underlyingTokenDecimals <= 18, ErrorCodes.OR_UNDERLYING_TOKENS_DECIMALS_TOO_BIG); feedProxies[underlyingAsset] = TokenConfig( proxyPriceFeedAddress, secondaryProxyPriceFeedAddress, maxValidPriceAge, underlyingTokenDecimals, oracleProviderType ); emit NewTokenConfigSet( underlyingAsset, proxyPriceFeedAddress, secondaryProxyPriceFeedAddress, maxValidPriceAge, underlyingTokenDecimals, oracleProviderType ); } }
@api3/airnode-protocol-v1/contracts/api3-server-v1/proxies/interfaces/IProxy.sol
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @dev See DapiProxy.sol for comments about usage interface IProxy { function read() external view returns (int224 value, uint32 timestamp); function api3ServerV1() external view returns (address); }
@api3/contracts/v0.8/interfaces/IProxy.sol
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@api3/airnode-protocol-v1/contracts/api3-server-v1/proxies/interfaces/IProxy.sol";
@openzeppelin/contracts/access/AccessControl.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/AccessControl.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; import "../utils/Context.sol"; import "../utils/Strings.sol"; import "../utils/introspection/ERC165.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ```solidity * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ```solidity * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules} * to enforce additional security measures for this role. */ abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping(address => bool) members; bytes32 adminRole; } mapping(bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view virtual override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `_msgSender()` is missing `role`. * Overriding this function changes the behavior of the {onlyRole} modifier. * * Format of the revert message is described in {_checkRole}. * * _Available since v4.6._ */ function _checkRole(bytes32 role) internal view virtual { _checkRole(role, _msgSender()); } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view virtual { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(account), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleGranted} event. */ function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleRevoked} event. */ function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been revoked `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. * * May emit a {RoleRevoked} event. */ function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * May emit a {RoleGranted} event. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== * * NOTE: This function is deprecated in favor of {_grantRole}. */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { bytes32 previousAdminRole = getRoleAdmin(role); _roles[role].adminRole = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /** * @dev Grants `role` to `account`. * * Internal function without access restriction. * * May emit a {RoleGranted} event. */ function _grantRole(bytes32 role, address account) internal virtual { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } /** * @dev Revokes `role` from `account`. * * Internal function without access restriction. * * May emit a {RoleRevoked} event. */ function _revokeRole(bytes32 role, address account) internal virtual { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } }
@openzeppelin/contracts/access/IAccessControl.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol) pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {AccessControl-_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) external view returns (bool); /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {AccessControl-_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) external view returns (bytes32); /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) external; /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) external; /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) external; }
@openzeppelin/contracts/interfaces/IERC3156FlashBorrower.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC3156FlashBorrower.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC3156 FlashBorrower, as defined in * https://eips.ethereum.org/EIPS/eip-3156[ERC-3156]. * * _Available since v4.1._ */ interface IERC3156FlashBorrower { /** * @dev Receive a flash loan. * @param initiator The initiator of the loan. * @param token The loan currency. * @param amount The amount of tokens lent. * @param fee The additional amount of tokens to repay. * @param data Arbitrary data structure, intended to contain user-defined parameters. * @return The keccak256 hash of "ERC3156FlashBorrower.onFlashLoan" */ function onFlashLoan( address initiator, address token, uint256 amount, uint256 fee, bytes calldata data ) external returns (bytes32); }
@openzeppelin/contracts/interfaces/IERC3156FlashLender.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (interfaces/IERC3156FlashLender.sol) pragma solidity ^0.8.0; import "./IERC3156FlashBorrower.sol"; /** * @dev Interface of the ERC3156 FlashLender, as defined in * https://eips.ethereum.org/EIPS/eip-3156[ERC-3156]. * * _Available since v4.1._ */ interface IERC3156FlashLender { /** * @dev The amount of currency available to be lended. * @param token The loan currency. * @return The amount of `token` that can be borrowed. */ function maxFlashLoan(address token) external view returns (uint256); /** * @dev The fee to be charged for a given loan. * @param token The loan currency. * @param amount The amount of tokens lent. * @return The amount of `token` to be charged for the loan, on top of the returned principal. */ function flashFee(address token, uint256 amount) external view returns (uint256); /** * @dev Initiate a flash loan. * @param receiver The receiver of the tokens in the loan, and the receiver of the callback. * @param token The loan currency. * @param amount The amount of tokens lent. * @param data Arbitrary data structure, intended to contain user-defined parameters. */ function flashLoan( IERC3156FlashBorrower receiver, address token, uint256 amount, bytes calldata data ) external returns (bool); }
@openzeppelin/contracts/token/ERC20/IERC20.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 amount) external returns (bool); }
@openzeppelin/contracts/utils/Context.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
@openzeppelin/contracts/utils/Strings.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/Math.sol"; import "./math/SignedMath.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `int256` to its ASCII `string` decimal representation. */ function toString(int256 value) internal pure returns (string memory) { return string(abi.encodePacked(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) { 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] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } /** * @dev Returns true if the two strings are equal. */ function equal(string memory a, string memory b) internal pure returns (bool) { return keccak256(bytes(a)) == keccak256(bytes(b)); } }
@openzeppelin/contracts/utils/introspection/ERC165.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
@openzeppelin/contracts/utils/introspection/IERC165.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
@openzeppelin/contracts/utils/math/Math.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev 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 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) 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 2^256. Also prevents denominator == 0. require(denominator > prod1, "Math: mulDiv 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. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / 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 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. 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 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // 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 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, 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; } } /** * @notice 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) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice 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 + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 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 + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * 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 + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * 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; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 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 + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0); } } }
@openzeppelin/contracts/utils/math/SafeCast.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SafeCast.sol) // This file was procedurally generated from scripts/generate/templates/SafeCast.js. pragma solidity ^0.8.0; /** * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow * checks. * * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can * easily result in undesired exploitation or bugs, since developers usually * assume that overflows raise errors. `SafeCast` restores this intuition by * reverting the transaction when such an operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. * * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing * all math on `uint256` and `int256` and then downcasting. */ library SafeCast { /** * @dev Returns the downcasted uint248 from uint256, reverting on * overflow (when the input is greater than largest uint248). * * Counterpart to Solidity's `uint248` operator. * * Requirements: * * - input must fit into 248 bits * * _Available since v4.7._ */ function toUint248(uint256 value) internal pure returns (uint248) { require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits"); return uint248(value); } /** * @dev Returns the downcasted uint240 from uint256, reverting on * overflow (when the input is greater than largest uint240). * * Counterpart to Solidity's `uint240` operator. * * Requirements: * * - input must fit into 240 bits * * _Available since v4.7._ */ function toUint240(uint256 value) internal pure returns (uint240) { require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits"); return uint240(value); } /** * @dev Returns the downcasted uint232 from uint256, reverting on * overflow (when the input is greater than largest uint232). * * Counterpart to Solidity's `uint232` operator. * * Requirements: * * - input must fit into 232 bits * * _Available since v4.7._ */ function toUint232(uint256 value) internal pure returns (uint232) { require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits"); return uint232(value); } /** * @dev Returns the downcasted uint224 from uint256, reverting on * overflow (when the input is greater than largest uint224). * * Counterpart to Solidity's `uint224` operator. * * Requirements: * * - input must fit into 224 bits * * _Available since v4.2._ */ function toUint224(uint256 value) internal pure returns (uint224) { require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits"); return uint224(value); } /** * @dev Returns the downcasted uint216 from uint256, reverting on * overflow (when the input is greater than largest uint216). * * Counterpart to Solidity's `uint216` operator. * * Requirements: * * - input must fit into 216 bits * * _Available since v4.7._ */ function toUint216(uint256 value) internal pure returns (uint216) { require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits"); return uint216(value); } /** * @dev Returns the downcasted uint208 from uint256, reverting on * overflow (when the input is greater than largest uint208). * * Counterpart to Solidity's `uint208` operator. * * Requirements: * * - input must fit into 208 bits * * _Available since v4.7._ */ function toUint208(uint256 value) internal pure returns (uint208) { require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits"); return uint208(value); } /** * @dev Returns the downcasted uint200 from uint256, reverting on * overflow (when the input is greater than largest uint200). * * Counterpart to Solidity's `uint200` operator. * * Requirements: * * - input must fit into 200 bits * * _Available since v4.7._ */ function toUint200(uint256 value) internal pure returns (uint200) { require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits"); return uint200(value); } /** * @dev Returns the downcasted uint192 from uint256, reverting on * overflow (when the input is greater than largest uint192). * * Counterpart to Solidity's `uint192` operator. * * Requirements: * * - input must fit into 192 bits * * _Available since v4.7._ */ function toUint192(uint256 value) internal pure returns (uint192) { require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits"); return uint192(value); } /** * @dev Returns the downcasted uint184 from uint256, reverting on * overflow (when the input is greater than largest uint184). * * Counterpart to Solidity's `uint184` operator. * * Requirements: * * - input must fit into 184 bits * * _Available since v4.7._ */ function toUint184(uint256 value) internal pure returns (uint184) { require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits"); return uint184(value); } /** * @dev Returns the downcasted uint176 from uint256, reverting on * overflow (when the input is greater than largest uint176). * * Counterpart to Solidity's `uint176` operator. * * Requirements: * * - input must fit into 176 bits * * _Available since v4.7._ */ function toUint176(uint256 value) internal pure returns (uint176) { require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits"); return uint176(value); } /** * @dev Returns the downcasted uint168 from uint256, reverting on * overflow (when the input is greater than largest uint168). * * Counterpart to Solidity's `uint168` operator. * * Requirements: * * - input must fit into 168 bits * * _Available since v4.7._ */ function toUint168(uint256 value) internal pure returns (uint168) { require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits"); return uint168(value); } /** * @dev Returns the downcasted uint160 from uint256, reverting on * overflow (when the input is greater than largest uint160). * * Counterpart to Solidity's `uint160` operator. * * Requirements: * * - input must fit into 160 bits * * _Available since v4.7._ */ function toUint160(uint256 value) internal pure returns (uint160) { require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits"); return uint160(value); } /** * @dev Returns the downcasted uint152 from uint256, reverting on * overflow (when the input is greater than largest uint152). * * Counterpart to Solidity's `uint152` operator. * * Requirements: * * - input must fit into 152 bits * * _Available since v4.7._ */ function toUint152(uint256 value) internal pure returns (uint152) { require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits"); return uint152(value); } /** * @dev Returns the downcasted uint144 from uint256, reverting on * overflow (when the input is greater than largest uint144). * * Counterpart to Solidity's `uint144` operator. * * Requirements: * * - input must fit into 144 bits * * _Available since v4.7._ */ function toUint144(uint256 value) internal pure returns (uint144) { require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits"); return uint144(value); } /** * @dev Returns the downcasted uint136 from uint256, reverting on * overflow (when the input is greater than largest uint136). * * Counterpart to Solidity's `uint136` operator. * * Requirements: * * - input must fit into 136 bits * * _Available since v4.7._ */ function toUint136(uint256 value) internal pure returns (uint136) { require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits"); return uint136(value); } /** * @dev Returns the downcasted uint128 from uint256, reverting on * overflow (when the input is greater than largest uint128). * * Counterpart to Solidity's `uint128` operator. * * Requirements: * * - input must fit into 128 bits * * _Available since v2.5._ */ function toUint128(uint256 value) internal pure returns (uint128) { require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits"); return uint128(value); } /** * @dev Returns the downcasted uint120 from uint256, reverting on * overflow (when the input is greater than largest uint120). * * Counterpart to Solidity's `uint120` operator. * * Requirements: * * - input must fit into 120 bits * * _Available since v4.7._ */ function toUint120(uint256 value) internal pure returns (uint120) { require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits"); return uint120(value); } /** * @dev Returns the downcasted uint112 from uint256, reverting on * overflow (when the input is greater than largest uint112). * * Counterpart to Solidity's `uint112` operator. * * Requirements: * * - input must fit into 112 bits * * _Available since v4.7._ */ function toUint112(uint256 value) internal pure returns (uint112) { require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits"); return uint112(value); } /** * @dev Returns the downcasted uint104 from uint256, reverting on * overflow (when the input is greater than largest uint104). * * Counterpart to Solidity's `uint104` operator. * * Requirements: * * - input must fit into 104 bits * * _Available since v4.7._ */ function toUint104(uint256 value) internal pure returns (uint104) { require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits"); return uint104(value); } /** * @dev Returns the downcasted uint96 from uint256, reverting on * overflow (when the input is greater than largest uint96). * * Counterpart to Solidity's `uint96` operator. * * Requirements: * * - input must fit into 96 bits * * _Available since v4.2._ */ function toUint96(uint256 value) internal pure returns (uint96) { require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits"); return uint96(value); } /** * @dev Returns the downcasted uint88 from uint256, reverting on * overflow (when the input is greater than largest uint88). * * Counterpart to Solidity's `uint88` operator. * * Requirements: * * - input must fit into 88 bits * * _Available since v4.7._ */ function toUint88(uint256 value) internal pure returns (uint88) { require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits"); return uint88(value); } /** * @dev Returns the downcasted uint80 from uint256, reverting on * overflow (when the input is greater than largest uint80). * * Counterpart to Solidity's `uint80` operator. * * Requirements: * * - input must fit into 80 bits * * _Available since v4.7._ */ function toUint80(uint256 value) internal pure returns (uint80) { require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits"); return uint80(value); } /** * @dev Returns the downcasted uint72 from uint256, reverting on * overflow (when the input is greater than largest uint72). * * Counterpart to Solidity's `uint72` operator. * * Requirements: * * - input must fit into 72 bits * * _Available since v4.7._ */ function toUint72(uint256 value) internal pure returns (uint72) { require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits"); return uint72(value); } /** * @dev Returns the downcasted uint64 from uint256, reverting on * overflow (when the input is greater than largest uint64). * * Counterpart to Solidity's `uint64` operator. * * Requirements: * * - input must fit into 64 bits * * _Available since v2.5._ */ function toUint64(uint256 value) internal pure returns (uint64) { require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits"); return uint64(value); } /** * @dev Returns the downcasted uint56 from uint256, reverting on * overflow (when the input is greater than largest uint56). * * Counterpart to Solidity's `uint56` operator. * * Requirements: * * - input must fit into 56 bits * * _Available since v4.7._ */ function toUint56(uint256 value) internal pure returns (uint56) { require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits"); return uint56(value); } /** * @dev Returns the downcasted uint48 from uint256, reverting on * overflow (when the input is greater than largest uint48). * * Counterpart to Solidity's `uint48` operator. * * Requirements: * * - input must fit into 48 bits * * _Available since v4.7._ */ function toUint48(uint256 value) internal pure returns (uint48) { require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits"); return uint48(value); } /** * @dev Returns the downcasted uint40 from uint256, reverting on * overflow (when the input is greater than largest uint40). * * Counterpart to Solidity's `uint40` operator. * * Requirements: * * - input must fit into 40 bits * * _Available since v4.7._ */ function toUint40(uint256 value) internal pure returns (uint40) { require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits"); return uint40(value); } /** * @dev Returns the downcasted uint32 from uint256, reverting on * overflow (when the input is greater than largest uint32). * * Counterpart to Solidity's `uint32` operator. * * Requirements: * * - input must fit into 32 bits * * _Available since v2.5._ */ function toUint32(uint256 value) internal pure returns (uint32) { require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits"); return uint32(value); } /** * @dev Returns the downcasted uint24 from uint256, reverting on * overflow (when the input is greater than largest uint24). * * Counterpart to Solidity's `uint24` operator. * * Requirements: * * - input must fit into 24 bits * * _Available since v4.7._ */ function toUint24(uint256 value) internal pure returns (uint24) { require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits"); return uint24(value); } /** * @dev Returns the downcasted uint16 from uint256, reverting on * overflow (when the input is greater than largest uint16). * * Counterpart to Solidity's `uint16` operator. * * Requirements: * * - input must fit into 16 bits * * _Available since v2.5._ */ function toUint16(uint256 value) internal pure returns (uint16) { require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits"); return uint16(value); } /** * @dev Returns the downcasted uint8 from uint256, reverting on * overflow (when the input is greater than largest uint8). * * Counterpart to Solidity's `uint8` operator. * * Requirements: * * - input must fit into 8 bits * * _Available since v2.5._ */ function toUint8(uint256 value) internal pure returns (uint8) { require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits"); return uint8(value); } /** * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. * * _Available since v3.0._ */ function toUint256(int256 value) internal pure returns (uint256) { require(value >= 0, "SafeCast: value must be positive"); return uint256(value); } /** * @dev Returns the downcasted int248 from int256, reverting on * overflow (when the input is less than smallest int248 or * greater than largest int248). * * Counterpart to Solidity's `int248` operator. * * Requirements: * * - input must fit into 248 bits * * _Available since v4.7._ */ function toInt248(int256 value) internal pure returns (int248 downcasted) { downcasted = int248(value); require(downcasted == value, "SafeCast: value doesn't fit in 248 bits"); } /** * @dev Returns the downcasted int240 from int256, reverting on * overflow (when the input is less than smallest int240 or * greater than largest int240). * * Counterpart to Solidity's `int240` operator. * * Requirements: * * - input must fit into 240 bits * * _Available since v4.7._ */ function toInt240(int256 value) internal pure returns (int240 downcasted) { downcasted = int240(value); require(downcasted == value, "SafeCast: value doesn't fit in 240 bits"); } /** * @dev Returns the downcasted int232 from int256, reverting on * overflow (when the input is less than smallest int232 or * greater than largest int232). * * Counterpart to Solidity's `int232` operator. * * Requirements: * * - input must fit into 232 bits * * _Available since v4.7._ */ function toInt232(int256 value) internal pure returns (int232 downcasted) { downcasted = int232(value); require(downcasted == value, "SafeCast: value doesn't fit in 232 bits"); } /** * @dev Returns the downcasted int224 from int256, reverting on * overflow (when the input is less than smallest int224 or * greater than largest int224). * * Counterpart to Solidity's `int224` operator. * * Requirements: * * - input must fit into 224 bits * * _Available since v4.7._ */ function toInt224(int256 value) internal pure returns (int224 downcasted) { downcasted = int224(value); require(downcasted == value, "SafeCast: value doesn't fit in 224 bits"); } /** * @dev Returns the downcasted int216 from int256, reverting on * overflow (when the input is less than smallest int216 or * greater than largest int216). * * Counterpart to Solidity's `int216` operator. * * Requirements: * * - input must fit into 216 bits * * _Available since v4.7._ */ function toInt216(int256 value) internal pure returns (int216 downcasted) { downcasted = int216(value); require(downcasted == value, "SafeCast: value doesn't fit in 216 bits"); } /** * @dev Returns the downcasted int208 from int256, reverting on * overflow (when the input is less than smallest int208 or * greater than largest int208). * * Counterpart to Solidity's `int208` operator. * * Requirements: * * - input must fit into 208 bits * * _Available since v4.7._ */ function toInt208(int256 value) internal pure returns (int208 downcasted) { downcasted = int208(value); require(downcasted == value, "SafeCast: value doesn't fit in 208 bits"); } /** * @dev Returns the downcasted int200 from int256, reverting on * overflow (when the input is less than smallest int200 or * greater than largest int200). * * Counterpart to Solidity's `int200` operator. * * Requirements: * * - input must fit into 200 bits * * _Available since v4.7._ */ function toInt200(int256 value) internal pure returns (int200 downcasted) { downcasted = int200(value); require(downcasted == value, "SafeCast: value doesn't fit in 200 bits"); } /** * @dev Returns the downcasted int192 from int256, reverting on * overflow (when the input is less than smallest int192 or * greater than largest int192). * * Counterpart to Solidity's `int192` operator. * * Requirements: * * - input must fit into 192 bits * * _Available since v4.7._ */ function toInt192(int256 value) internal pure returns (int192 downcasted) { downcasted = int192(value); require(downcasted == value, "SafeCast: value doesn't fit in 192 bits"); } /** * @dev Returns the downcasted int184 from int256, reverting on * overflow (when the input is less than smallest int184 or * greater than largest int184). * * Counterpart to Solidity's `int184` operator. * * Requirements: * * - input must fit into 184 bits * * _Available since v4.7._ */ function toInt184(int256 value) internal pure returns (int184 downcasted) { downcasted = int184(value); require(downcasted == value, "SafeCast: value doesn't fit in 184 bits"); } /** * @dev Returns the downcasted int176 from int256, reverting on * overflow (when the input is less than smallest int176 or * greater than largest int176). * * Counterpart to Solidity's `int176` operator. * * Requirements: * * - input must fit into 176 bits * * _Available since v4.7._ */ function toInt176(int256 value) internal pure returns (int176 downcasted) { downcasted = int176(value); require(downcasted == value, "SafeCast: value doesn't fit in 176 bits"); } /** * @dev Returns the downcasted int168 from int256, reverting on * overflow (when the input is less than smallest int168 or * greater than largest int168). * * Counterpart to Solidity's `int168` operator. * * Requirements: * * - input must fit into 168 bits * * _Available since v4.7._ */ function toInt168(int256 value) internal pure returns (int168 downcasted) { downcasted = int168(value); require(downcasted == value, "SafeCast: value doesn't fit in 168 bits"); } /** * @dev Returns the downcasted int160 from int256, reverting on * overflow (when the input is less than smallest int160 or * greater than largest int160). * * Counterpart to Solidity's `int160` operator. * * Requirements: * * - input must fit into 160 bits * * _Available since v4.7._ */ function toInt160(int256 value) internal pure returns (int160 downcasted) { downcasted = int160(value); require(downcasted == value, "SafeCast: value doesn't fit in 160 bits"); } /** * @dev Returns the downcasted int152 from int256, reverting on * overflow (when the input is less than smallest int152 or * greater than largest int152). * * Counterpart to Solidity's `int152` operator. * * Requirements: * * - input must fit into 152 bits * * _Available since v4.7._ */ function toInt152(int256 value) internal pure returns (int152 downcasted) { downcasted = int152(value); require(downcasted == value, "SafeCast: value doesn't fit in 152 bits"); } /** * @dev Returns the downcasted int144 from int256, reverting on * overflow (when the input is less than smallest int144 or * greater than largest int144). * * Counterpart to Solidity's `int144` operator. * * Requirements: * * - input must fit into 144 bits * * _Available since v4.7._ */ function toInt144(int256 value) internal pure returns (int144 downcasted) { downcasted = int144(value); require(downcasted == value, "SafeCast: value doesn't fit in 144 bits"); } /** * @dev Returns the downcasted int136 from int256, reverting on * overflow (when the input is less than smallest int136 or * greater than largest int136). * * Counterpart to Solidity's `int136` operator. * * Requirements: * * - input must fit into 136 bits * * _Available since v4.7._ */ function toInt136(int256 value) internal pure returns (int136 downcasted) { downcasted = int136(value); require(downcasted == value, "SafeCast: value doesn't fit in 136 bits"); } /** * @dev Returns the downcasted int128 from int256, reverting on * overflow (when the input is less than smallest int128 or * greater than largest int128). * * Counterpart to Solidity's `int128` operator. * * Requirements: * * - input must fit into 128 bits * * _Available since v3.1._ */ function toInt128(int256 value) internal pure returns (int128 downcasted) { downcasted = int128(value); require(downcasted == value, "SafeCast: value doesn't fit in 128 bits"); } /** * @dev Returns the downcasted int120 from int256, reverting on * overflow (when the input is less than smallest int120 or * greater than largest int120). * * Counterpart to Solidity's `int120` operator. * * Requirements: * * - input must fit into 120 bits * * _Available since v4.7._ */ function toInt120(int256 value) internal pure returns (int120 downcasted) { downcasted = int120(value); require(downcasted == value, "SafeCast: value doesn't fit in 120 bits"); } /** * @dev Returns the downcasted int112 from int256, reverting on * overflow (when the input is less than smallest int112 or * greater than largest int112). * * Counterpart to Solidity's `int112` operator. * * Requirements: * * - input must fit into 112 bits * * _Available since v4.7._ */ function toInt112(int256 value) internal pure returns (int112 downcasted) { downcasted = int112(value); require(downcasted == value, "SafeCast: value doesn't fit in 112 bits"); } /** * @dev Returns the downcasted int104 from int256, reverting on * overflow (when the input is less than smallest int104 or * greater than largest int104). * * Counterpart to Solidity's `int104` operator. * * Requirements: * * - input must fit into 104 bits * * _Available since v4.7._ */ function toInt104(int256 value) internal pure returns (int104 downcasted) { downcasted = int104(value); require(downcasted == value, "SafeCast: value doesn't fit in 104 bits"); } /** * @dev Returns the downcasted int96 from int256, reverting on * overflow (when the input is less than smallest int96 or * greater than largest int96). * * Counterpart to Solidity's `int96` operator. * * Requirements: * * - input must fit into 96 bits * * _Available since v4.7._ */ function toInt96(int256 value) internal pure returns (int96 downcasted) { downcasted = int96(value); require(downcasted == value, "SafeCast: value doesn't fit in 96 bits"); } /** * @dev Returns the downcasted int88 from int256, reverting on * overflow (when the input is less than smallest int88 or * greater than largest int88). * * Counterpart to Solidity's `int88` operator. * * Requirements: * * - input must fit into 88 bits * * _Available since v4.7._ */ function toInt88(int256 value) internal pure returns (int88 downcasted) { downcasted = int88(value); require(downcasted == value, "SafeCast: value doesn't fit in 88 bits"); } /** * @dev Returns the downcasted int80 from int256, reverting on * overflow (when the input is less than smallest int80 or * greater than largest int80). * * Counterpart to Solidity's `int80` operator. * * Requirements: * * - input must fit into 80 bits * * _Available since v4.7._ */ function toInt80(int256 value) internal pure returns (int80 downcasted) { downcasted = int80(value); require(downcasted == value, "SafeCast: value doesn't fit in 80 bits"); } /** * @dev Returns the downcasted int72 from int256, reverting on * overflow (when the input is less than smallest int72 or * greater than largest int72). * * Counterpart to Solidity's `int72` operator. * * Requirements: * * - input must fit into 72 bits * * _Available since v4.7._ */ function toInt72(int256 value) internal pure returns (int72 downcasted) { downcasted = int72(value); require(downcasted == value, "SafeCast: value doesn't fit in 72 bits"); } /** * @dev Returns the downcasted int64 from int256, reverting on * overflow (when the input is less than smallest int64 or * greater than largest int64). * * Counterpart to Solidity's `int64` operator. * * Requirements: * * - input must fit into 64 bits * * _Available since v3.1._ */ function toInt64(int256 value) internal pure returns (int64 downcasted) { downcasted = int64(value); require(downcasted == value, "SafeCast: value doesn't fit in 64 bits"); } /** * @dev Returns the downcasted int56 from int256, reverting on * overflow (when the input is less than smallest int56 or * greater than largest int56). * * Counterpart to Solidity's `int56` operator. * * Requirements: * * - input must fit into 56 bits * * _Available since v4.7._ */ function toInt56(int256 value) internal pure returns (int56 downcasted) { downcasted = int56(value); require(downcasted == value, "SafeCast: value doesn't fit in 56 bits"); } /** * @dev Returns the downcasted int48 from int256, reverting on * overflow (when the input is less than smallest int48 or * greater than largest int48). * * Counterpart to Solidity's `int48` operator. * * Requirements: * * - input must fit into 48 bits * * _Available since v4.7._ */ function toInt48(int256 value) internal pure returns (int48 downcasted) { downcasted = int48(value); require(downcasted == value, "SafeCast: value doesn't fit in 48 bits"); } /** * @dev Returns the downcasted int40 from int256, reverting on * overflow (when the input is less than smallest int40 or * greater than largest int40). * * Counterpart to Solidity's `int40` operator. * * Requirements: * * - input must fit into 40 bits * * _Available since v4.7._ */ function toInt40(int256 value) internal pure returns (int40 downcasted) { downcasted = int40(value); require(downcasted == value, "SafeCast: value doesn't fit in 40 bits"); } /** * @dev Returns the downcasted int32 from int256, reverting on * overflow (when the input is less than smallest int32 or * greater than largest int32). * * Counterpart to Solidity's `int32` operator. * * Requirements: * * - input must fit into 32 bits * * _Available since v3.1._ */ function toInt32(int256 value) internal pure returns (int32 downcasted) { downcasted = int32(value); require(downcasted == value, "SafeCast: value doesn't fit in 32 bits"); } /** * @dev Returns the downcasted int24 from int256, reverting on * overflow (when the input is less than smallest int24 or * greater than largest int24). * * Counterpart to Solidity's `int24` operator. * * Requirements: * * - input must fit into 24 bits * * _Available since v4.7._ */ function toInt24(int256 value) internal pure returns (int24 downcasted) { downcasted = int24(value); require(downcasted == value, "SafeCast: value doesn't fit in 24 bits"); } /** * @dev Returns the downcasted int16 from int256, reverting on * overflow (when the input is less than smallest int16 or * greater than largest int16). * * Counterpart to Solidity's `int16` operator. * * Requirements: * * - input must fit into 16 bits * * _Available since v3.1._ */ function toInt16(int256 value) internal pure returns (int16 downcasted) { downcasted = int16(value); require(downcasted == value, "SafeCast: value doesn't fit in 16 bits"); } /** * @dev Returns the downcasted int8 from int256, reverting on * overflow (when the input is less than smallest int8 or * greater than largest int8). * * Counterpart to Solidity's `int8` operator. * * Requirements: * * - input must fit into 8 bits * * _Available since v3.1._ */ function toInt8(int256 value) internal pure returns (int8 downcasted) { downcasted = int8(value); require(downcasted == value, "SafeCast: value doesn't fit in 8 bits"); } /** * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. * * _Available since v3.0._ */ function toInt256(uint256 value) internal pure returns (int256) { // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256"); return int256(value); } }
@openzeppelin/contracts/utils/math/SignedMath.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol) pragma solidity ^0.8.0; /** * @dev Standard signed math utilities missing in the Solidity language. */ library SignedMath { /** * @dev Returns the largest of two signed numbers. */ function max(int256 a, int256 b) internal pure returns (int256) { return a > b ? a : b; } /** * @dev Returns the smallest of two signed numbers. */ function min(int256 a, int256 b) internal pure returns (int256) { return a < b ? a : b; } /** * @dev Returns the average of two signed numbers without overflow. * The result is rounded towards zero. */ function average(int256 a, int256 b) internal pure returns (int256) { // Formula from the book "Hacker's Delight" int256 x = (a & b) + ((a ^ b) >> 1); return x + (int256(uint256(x) >> 255) & (a ^ b)); } /** * @dev Returns the absolute unsigned value of a signed value. */ function abs(int256 n) internal pure returns (uint256) { unchecked { // must be unchecked in order to support `n = type(int256).min` return uint256(n >= 0 ? n : -n); } } }
contracts/interfaces/IInterestRateModel.sol
// SPDX-License-Identifier: BSD-3-Clause pragma solidity 0.8.17; import "@openzeppelin/contracts/utils/introspection/IERC165.sol"; /** * @title Minterest InterestRateModel Interface * @author Minterest */ interface IInterestRateModel { /** * @notice Calculates the current borrow interest rate per block * @param cash The total amount of cash the market has * @param borrows The total amount of borrows the market has outstanding * @param protocolInterest The total amount of protocol interest the market has * @return The borrow rate per block (as a percentage, and scaled by 1e18) */ function getBorrowRate( uint256 cash, uint256 borrows, uint256 protocolInterest ) external view returns (uint256); /** * @notice Calculates the current supply interest rate per block * @param cash The total amount of cash the market has * @param borrows The total amount of borrows the market has outstanding * @param protocolInterest The total amount of protocol interest the market has * @param protocolInterestFactorMantissa The current protocol interest factor the market has * @return The supply rate per block (as a percentage, and scaled by 1e18) */ function getSupplyRate( uint256 cash, uint256 borrows, uint256 protocolInterest, uint256 protocolInterestFactorMantissa ) external view returns (uint256); }
contracts/interfaces/IMToken.sol
// SPDX-License-Identifier: BSD-3-Clause pragma solidity 0.8.17; import "@openzeppelin/contracts/interfaces/IERC3156FlashLender.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/utils/introspection/IERC165.sol"; import "@openzeppelin/contracts/access/IAccessControl.sol"; import "./IInterestRateModel.sol"; interface IMToken is IAccessControl, IERC20, IERC3156FlashLender, IERC165 { /** * @notice Event emitted when interest is accrued */ event AccrueInterest( uint256 cashPrior, uint256 interestAccumulated, uint256 borrowIndex, uint256 totalBorrows, uint256 totalProtocolInterest ); /** * @notice Event emitted when tokens are lended */ event Lend(address lender, uint256 lendAmount, uint256 lendTokens, uint256 newTotalTokenSupply); /** * @notice Event emitted when tokens are redeemed */ event Redeem(address redeemer, uint256 redeemAmount, uint256 redeemTokens, uint256 newTotalTokenSupply); /** * @notice Event emitted when underlying is borrowed */ event Borrow(address borrower, uint256 borrowAmount, uint256 accountBorrows, uint256 totalBorrows); /** * @notice Event emitted when tokens are seized */ event Seize( address borrower, address receiver, uint256 seizeTokens, uint256 accountsTokens, uint256 totalSupply, uint256 seizeUnderlyingAmount ); /** * @notice Event emitted when a borrow is repaid */ event RepayBorrow( address payer, address borrower, uint256 repayAmount, uint256 accountBorrows, uint256 totalBorrows ); /** * @notice Event emitted when a borrow is repaid during autoliquidation */ event AutoLiquidationRepayBorrow( address borrower, uint256 repayAmount, uint256 accountBorrowsNew, uint256 totalBorrowsNew, uint256 TotalProtocolInterestNew ); /** * @notice Event emitted when flash loan is executed */ event FlashLoanExecuted(address receiver, uint256 amount, uint256 fee); /** * @notice Event emitted when interestRateModel is changed */ event NewMarketInterestRateModel(IInterestRateModel oldInterestRateModel, IInterestRateModel newInterestRateModel); /** * @notice Event emitted when the protocol interest factor is changed */ event NewProtocolInterestFactor( uint256 oldProtocolInterestFactorMantissa, uint256 newProtocolInterestFactorMantissa ); /** * @notice Event emitted when the flash loan max share is changed */ event NewFlashLoanMaxShare(uint256 oldMaxShare, uint256 newMaxShare); /** * @notice Event emitted when the flash loan fee is changed */ event NewFlashLoanFee(uint256 oldFee, uint256 newFee); /** * @notice Event emitted when the protocol interest are added */ event ProtocolInterestAdded(address benefactor, uint256 addAmount, uint256 newTotalProtocolInterest); /** * @notice Event emitted when the protocol interest reduced */ event ProtocolInterestReduced(address admin, uint256 reduceAmount, uint256 newTotalProtocolInterest); /** * @notice Value is the Keccak-256 hash of "TIMELOCK" */ function TIMELOCK() external view returns (bytes32); /** * @notice Underlying asset for this MToken */ function underlying() external view returns (IERC20); /** * @notice EIP-20 token name for this token */ function name() external view returns (string memory); /** * @notice EIP-20 token symbol for this token */ function symbol() external view returns (string memory); /** * @notice EIP-20 token decimals for this token */ function decimals() external view returns (uint8); /** * @notice Model which tells what the current interest rate should be */ function interestRateModel() external view returns (IInterestRateModel); /** * @notice Initial exchange rate used when lending the first MTokens (used when totalTokenSupply = 0) */ function initialExchangeRateMantissa() external view returns (uint256); /** * @notice Fraction of interest currently set aside for protocol interest */ function protocolInterestFactorMantissa() external view returns (uint256); /** * @notice Block number that interest was last accrued at */ function accrualBlockNumber() external view returns (uint256); /** * @notice Accumulator of the total earned interest rate since the opening of the market */ function borrowIndex() external view returns (uint256); /** * @notice Total amount of outstanding borrows of the underlying in this market */ function totalBorrows() external view returns (uint256); /** * @notice Total amount of protocol interest of the underlying held in this market */ function totalProtocolInterest() external view returns (uint256); /** * @notice Share of market's current underlying token balance that can be used as flash loan (scaled by 1e18). */ function maxFlashLoanShare() external view returns (uint256); /** * @notice Share of flash loan amount that would be taken as fee (scaled by 1e18). */ function flashLoanFeeShare() external view returns (uint256); /** * @notice Returns total token supply */ function totalSupply() external view returns (uint256); /** * @notice Transfer `amount` tokens from `msg.sender` to `dst` * @param dst The address of the destination account * @param amount The number of tokens to transfer * @return Whether or not the transfer succeeded */ function transfer(address dst, uint256 amount) external returns (bool); /** * @notice Transfer `amount` tokens from `src` to `dst` * @param src The address of the source account * @param dst The address of the destination account * @param amount The number of tokens to transfer * @return Whether or not the transfer succeeded */ function transferFrom( address src, address dst, uint256 amount ) external returns (bool); /** * @notice Approve `spender` to transfer up to `amount` from `src` * @dev This will overwrite the approval amount for `spender` * and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve) * @param spender The address of the account which may transfer tokens * @param amount The number of tokens that are approved (-1 means infinite) * @return Whether or not the approval succeeded */ function approve(address spender, uint256 amount) external returns (bool); /** * @notice Get the current allowance from `owner` for `spender` * @param owner The address of the account which owns the tokens to be spent * @param spender The address of the account which may transfer tokens * @return The number of tokens allowed to be spent (-1 means infinite) */ function allowance(address owner, address spender) external view returns (uint256); /** * @notice Get the token balance of the `owner` * @param owner The address of the account to query * @return The number of tokens owned by `owner` */ function balanceOf(address owner) external view returns (uint256); /** * @notice Get the underlying balance of the `owner` * @dev This also accrues interest in a transaction * @param owner The address of the account to query * @return The amount of underlying owned by `owner` */ function balanceOfUnderlying(address owner) external returns (uint256); /** * @notice Get a snapshot of the account's balances, and the cached exchange rate * @dev This is used by supervisor to more efficiently perform liquidity checks. * @param account Address of the account to snapshot * @return (token balance, borrow balance, exchange rate mantissa) */ function getAccountSnapshot(address account) external view returns ( uint256, uint256, uint256 ); /** * @notice Returns the current per-block borrow interest rate for this mToken * @return The borrow interest rate per block, scaled by 1e18 */ function borrowRatePerBlock() external view returns (uint256); /** * @notice Returns the current per-block supply interest rate for this mToken * @return The supply interest rate per block, scaled by 1e18 */ function supplyRatePerBlock() external view returns (uint256); /** * @notice Returns the current total borrows plus accrued interest * @return The total borrows with interest */ function totalBorrowsCurrent() external returns (uint256); /** * @notice Accrue interest to updated borrowIndex and then calculate account's * borrow balance using the updated borrowIndex * @param account The address whose balance should be calculated after updating borrowIndex * @return The calculated balance */ function borrowBalanceCurrent(address account) external returns (uint256); /** * @notice Return the borrow balance of account based on stored data * @param account The address whose balance should be calculated * @return The calculated balance */ function borrowBalanceStored(address account) external view returns (uint256); /** * @notice Accrue interest then return the up-to-date exchange rate * @return Calculated exchange rate scaled by 1e18 */ function exchangeRateCurrent() external returns (uint256); /** * @notice Calculates the exchange rate from the underlying to the MToken * @dev This function does not accrue interest before calculating the exchange rate * @return Calculated exchange rate scaled by 1e18 */ function exchangeRateStored() external view returns (uint256); /** * @notice Get cash balance of this mToken in the underlying asset * @return The quantity of underlying asset owned by this contract */ function getCash() external view returns (uint256); /** * @notice Applies accrued interest to total borrows and protocol interest * @dev This calculates interest accrued from the last checkpointed block * up to the current block and writes new checkpoint to storage. */ function accrueInterest() external; /** * @notice Sender supplies assets into the market and receives mTokens in exchange * @dev Accrues interest whether or not the operation succeeds, unless reverted * @param lendAmount The amount of the underlying asset to supply */ function lend(uint256 lendAmount) external; /** * @notice Sender redeems mTokens in exchange for the underlying asset * @dev Accrues interest whether or not the operation succeeds, unless reverted * @param redeemTokens The number of mTokens to redeem into underlying */ function redeem(uint256 redeemTokens) external; /** * @notice Redeems all mTokens for account in exchange for the underlying asset. * Can only be called within the AML system! * @dev Accrues interest whether or not the operation succeeds, unless reverted * @param account An account that is potentially sanctioned by the AML system */ function redeemByAmlDecision(address account) external; /** * @notice Sender redeems mTokens in exchange for a specified amount of underlying asset * @dev Accrues interest whether or not the operation succeeds, unless reverted * @param redeemAmount The amount of underlying to receive from redeeming mTokens */ function redeemUnderlying(uint256 redeemAmount) external; /** * @notice Sender borrows assets from the protocol to their own address * @param borrowAmount The amount of the underlying asset to borrow */ function borrow(uint256 borrowAmount) external; /** * @notice Sender repays their own borrow * @param repayAmount The amount to repay */ function repayBorrow(uint256 repayAmount) external; /** * @notice Sender repays a borrow belonging to borrower * @param borrower the account with the debt being payed off * @param repayAmount The amount to repay */ function repayBorrowBehalf(address borrower, uint256 repayAmount) external; /** * @notice Liquidator repays a borrow belonging to borrower * @param borrower_ the account with the debt being payed off * @param repayAmount_ the amount of underlying tokens being returned */ function autoLiquidationRepayBorrow(address borrower_, uint256 repayAmount_) external; /** * @notice A public function to sweep accidental ERC-20 transfers to this contract. * Tokens are sent to admin (timelock) * @param token The address of the ERC-20 token to sweep * @dev RESTRICTION: Admin only. */ function sweepToken(IERC20 token, address admin_) external; /** * @notice Burns collateral tokens at the borrower's address, transfer underlying assets to the Liquidator address. * @dev Called only during an auto liquidation process, msg.sender must be the Liquidation contract. * @param borrower_ The account having collateral seized * @param seizeUnderlyingAmount_ The number of underlying assets to seize. The caller must ensure that the parameter is greater than zero. * @param isLoanInsignificant_ Marker for insignificant loan whose collateral must be credited to the protocolInterest * @param receiver_ Address that receives accounts collateral */ function autoLiquidationSeize( address borrower_, uint256 seizeUnderlyingAmount_, bool isLoanInsignificant_, address receiver_ ) external; /** * @notice The amount of currency available to be lent. * @param token The loan currency. * @return The amount of `token` that can be borrowed. */ function maxFlashLoan(address token) external view returns (uint256); /** * @notice The fee to be charged for a given loan. * @param token The loan currency. * @param amount The amount of tokens lent. * @return The amount of `token` to be charged for the loan, on top of the returned principal. */ function flashFee(address token, uint256 amount) external view returns (uint256); /** * @notice Initiate a flash loan. * @param receiver The receiver of the tokens in the loan, and the receiver of the callback. * @param token The loan currency. * @param amount The amount of tokens lent. * @param data Arbitrary data structure, intended to contain user-defined parameters. */ function flashLoan( IERC3156FlashBorrower receiver, address token, uint256 amount, bytes calldata data ) external returns (bool); /** * @notice accrues interest and sets a new protocol interest factor for the protocol * @dev Admin function to accrue interest and set a new protocol interest factor * @dev RESTRICTION: Timelock only. */ function setProtocolInterestFactor(uint256 newProtocolInterestFactorMantissa) external; /** * @notice Accrues interest and increase protocol interest by transferring from msg.sender * @param addAmount_ Amount of addition to protocol interest */ function addProtocolInterest(uint256 addAmount_) external; /** * @notice Can only be called by liquidation contract. Increase protocol interest by transferring from payer. * @dev Calling code should make sure that accrueInterest() was called before. * @param payer_ The address from which the protocol interest will be transferred * @param addAmount_ Amount of addition to protocol interest */ function addProtocolInterestBehalf(address payer_, uint256 addAmount_) external; /** * @notice Accrues interest and reduces protocol interest by transferring to admin * @param reduceAmount Amount of reduction to protocol interest * @dev RESTRICTION: Admin only. */ function reduceProtocolInterest(uint256 reduceAmount, address admin_) external; /** * @notice accrues interest and updates the interest rate model using setInterestRateModelFresh * @dev Admin function to accrue interest and update the interest rate model * @param newInterestRateModel the new interest rate model to use * @dev RESTRICTION: Timelock only. */ function setInterestRateModel(IInterestRateModel newInterestRateModel) external; /** * @notice Updates share of markets cash that can be used as maximum amount of flash loan. * @param newMax New max amount share * @dev RESTRICTION: Timelock only. */ function setFlashLoanMaxShare(uint256 newMax) external; /** * @notice Updates fee of flash loan. * @param newFee New fee share of flash loan * @dev RESTRICTION: Timelock only. */ function setFlashLoanFeeShare(uint256 newFee) external; }
contracts/interfaces/IPriceOracle.sol
// SPDX-License-Identifier: BSD-3-Clause pragma solidity 0.8.17; import "./IMToken.sol"; interface IPriceOracle { /** * @notice Get the underlying price of a mToken asset * @param mToken The mToken to get the underlying price of * @return The underlying asset price mantissa (scaled by 1e18). * Zero means the price is unavailable. * * @dev Price should be scaled to 1e18 for tokens with tokenDecimals = 1e18 * and for 1e30 for tokens with tokenDecimals = 1e6. */ function getUnderlyingPrice(IMToken mToken) external view returns (uint256); /** * @notice Return price for an asset * @param asset address of token * @return The underlying asset price mantissa (scaled by 1e18). * Zero means the price is unavailable. * @dev Price should be scaled to 1e18 for tokens with tokenDecimals = 1e18 * and for 1e30 for tokens with tokenDecimals = 1e6. */ function getAssetPrice(address asset) external view returns (uint256); }
contracts/libraries/ErrorCodes.sol
// SPDX-License-Identifier: BSD-3-Clause pragma solidity 0.8.17; library ErrorCodes { // Common string internal constant ADMIN_ONLY = "E101"; string internal constant UNAUTHORIZED = "E102"; string internal constant OPERATION_PAUSED = "E103"; string internal constant WHITELISTED_ONLY = "E104"; string internal constant ADDRESS_IS_NOT_IN_AML_SYSTEM = "E105"; string internal constant ADDRESS_IS_BLACKLISTED = "E106"; // Invalid input string internal constant ADMIN_ADDRESS_CANNOT_BE_ZERO = "E201"; string internal constant INVALID_REDEEM = "E202"; string internal constant REDEEM_TOO_MUCH = "E203"; string internal constant MARKET_NOT_LISTED = "E204"; string internal constant INSUFFICIENT_LIQUIDITY = "E205"; string internal constant INVALID_SENDER = "E206"; string internal constant BORROW_CAP_REACHED = "E207"; string internal constant BALANCE_OWED = "E208"; string internal constant UNRELIABLE_LIQUIDATOR = "E209"; string internal constant INVALID_DESTINATION = "E210"; string internal constant INSUFFICIENT_STAKE = "E211"; string internal constant INVALID_DURATION = "E212"; string internal constant INVALID_PERIOD_RATE = "E213"; string internal constant EB_TIER_LIMIT_REACHED = "E214"; string internal constant LQ_INCORRECT_REPAY_AMOUNT = "E215"; string internal constant LQ_INSUFFICIENT_SEIZE_AMOUNT = "E216"; string internal constant EB_TIER_DOES_NOT_EXIST = "E217"; string internal constant EB_ZERO_TIER_CANNOT_BE_ENABLED = "E218"; string internal constant EB_ALREADY_ACTIVATED_TIER = "E219"; string internal constant EB_END_BLOCK_MUST_BE_LARGER_THAN_CURRENT = "E220"; string internal constant EB_CANNOT_MINT_TOKEN_FOR_ACTIVATED_TIER = "E221"; string internal constant EB_EMISSION_BOOST_IS_NOT_IN_RANGE = "E222"; string internal constant TARGET_ADDRESS_CANNOT_BE_ZERO = "E223"; string internal constant INSUFFICIENT_TOKEN_IN_VESTING_CONTRACT = "E224"; string internal constant VESTING_SCHEDULE_ALREADY_EXISTS = "E225"; string internal constant INSUFFICIENT_TOKENS_TO_CREATE_SCHEDULE = "E226"; string internal constant NO_VESTING_SCHEDULE = "E227"; string internal constant MNT_AMOUNT_IS_ZERO = "E230"; string internal constant INCORRECT_AMOUNT = "E231"; string internal constant MEMBERSHIP_LIMIT = "E232"; string internal constant MEMBER_NOT_EXIST = "E233"; string internal constant MEMBER_ALREADY_ADDED = "E234"; string internal constant MEMBERSHIP_LIMIT_REACHED = "E235"; string internal constant REPORTED_PRICE_SHOULD_BE_GREATER_THAN_ZERO = "E236"; string internal constant MTOKEN_ADDRESS_CANNOT_BE_ZERO = "E237"; string internal constant TOKEN_ADDRESS_CANNOT_BE_ZERO = "E238"; string internal constant REDEEM_TOKENS_OR_REDEEM_AMOUNT_MUST_BE_ZERO = "E239"; string internal constant FL_TOKEN_IS_NOT_UNDERLYING = "E240"; string internal constant FL_AMOUNT_IS_TOO_LARGE = "E241"; string internal constant FL_CALLBACK_FAILED = "E242"; string internal constant EB_MARKET_INDEX_IS_LESS_THAN_USER_INDEX = "E254"; string internal constant LQ_UNSUPPORTED_FULL_REPAY = "E255"; string internal constant LQ_UNSUPPORTED_FULL_SEIZE = "E256"; string internal constant LQ_UNSUPPORTED_MARKET_RECEIVED = "E257"; string internal constant LQ_UNSUCCESSFUL_CALLBACK = "E258"; string internal constant FL_UNAUTHORIZED_CALLBACK = "E270"; string internal constant FL_INCORRECT_TOKEN_OUT_DEVIATION = "E271"; string internal constant FL_SWAP_CALL_FAILS = "E272"; string internal constant FL_INVALID_AMOUNT_TOKEN_IN_SPENT = "E273"; string internal constant FL_INVALID_AMOUNT_TOKEN_OUT_RECEIVED = "E274"; string internal constant FL_EXACT_IN_INCORRECT_ALLOWANCE_AFTER = "E275"; string internal constant FL_RECEIVER_NOT_FOUND = "E276"; // Protocol errors string internal constant INVALID_PRICE = "E301"; string internal constant MARKET_NOT_FRESH = "E302"; string internal constant BORROW_RATE_TOO_HIGH = "E303"; string internal constant INSUFFICIENT_TOKEN_CASH = "E304"; string internal constant INSUFFICIENT_TOKENS_FOR_RELEASE = "E305"; string internal constant INSUFFICIENT_MNT_FOR_GRANT = "E306"; string internal constant TOKEN_TRANSFER_IN_UNDERFLOW = "E307"; string internal constant NOT_PARTICIPATING_IN_BUYBACK = "E308"; string internal constant NOT_ENOUGH_PARTICIPATING_ACCOUNTS = "E309"; string internal constant NOTHING_TO_DISTRIBUTE = "E310"; string internal constant ALREADY_PARTICIPATING_IN_BUYBACK = "E311"; string internal constant MNT_APPROVE_FAILS = "E312"; string internal constant TOO_EARLY_TO_DRIP = "E313"; string internal constant BB_UNSTAKE_TOO_EARLY = "E314"; string internal constant INSUFFICIENT_SHORTFALL = "E315"; string internal constant HEALTHY_FACTOR_NOT_IN_RANGE = "E316"; string internal constant BUYBACK_DRIPS_ALREADY_HAPPENED = "E317"; string internal constant EB_INDEX_SHOULD_BE_GREATER_THAN_INITIAL = "E318"; string internal constant NO_VESTING_SCHEDULES = "E319"; string internal constant INSUFFICIENT_UNRELEASED_TOKENS = "E320"; string internal constant ORACLE_PRICE_EXPIRED = "E321"; string internal constant TOKEN_NOT_FOUND = "E322"; string internal constant RECEIVED_PRICE_HAS_INVALID_ROUND = "E323"; string internal constant FL_PULL_AMOUNT_IS_TOO_LOW = "E324"; string internal constant INSUFFICIENT_TOTAL_PROTOCOL_INTEREST = "E325"; string internal constant BB_ACCOUNT_RECENTLY_VOTED = "E326"; string internal constant PRICE_FEED_ID_NOT_FOUND = "E327"; string internal constant INCORRECT_PRICE_MULTIPLIER = "E328"; string internal constant LL_NEW_ROOT_CANNOT_BE_ZERO = "E329"; string internal constant RH_PAYOUT_FROM_FUTURE = "E330"; string internal constant RH_ACCRUE_WITHOUT_UNLOCK = "E331"; string internal constant RH_LERP_DELTA_IS_GREATER_THAN_PERIOD = "E332"; string internal constant PRICE_FEED_ADDRESS_NOT_FOUND = "E333"; // Invalid input - Admin functions string internal constant ZERO_EXCHANGE_RATE = "E401"; string internal constant SECOND_INITIALIZATION = "E402"; string internal constant MARKET_ALREADY_LISTED = "E403"; string internal constant IDENTICAL_VALUE = "E404"; string internal constant ZERO_ADDRESS = "E405"; string internal constant EC_INVALID_PROVIDER_REPRESENTATIVE = "E406"; string internal constant EC_PROVIDER_CANT_BE_REPRESENTATIVE = "E407"; string internal constant OR_ORACLE_ADDRESS_CANNOT_BE_ZERO = "E408"; string internal constant OR_UNDERLYING_TOKENS_DECIMALS_SHOULD_BE_GREATER_THAN_ZERO = "E409"; string internal constant OR_REPORTER_MULTIPLIER_SHOULD_BE_GREATER_THAN_ZERO = "E410"; string internal constant INVALID_TOKEN = "E411"; string internal constant INVALID_PROTOCOL_INTEREST_FACTOR_MANTISSA = "E412"; string internal constant INVALID_REDUCE_AMOUNT = "E413"; string internal constant LIQUIDATION_FEE_MANTISSA_SHOULD_BE_GREATER_THAN_ZERO = "E414"; string internal constant INVALID_UTILISATION_FACTOR_MANTISSA = "E415"; string internal constant INVALID_MTOKENS_OR_BORROW_CAPS = "E416"; string internal constant FL_PARAM_IS_TOO_LARGE = "E417"; string internal constant MNT_INVALID_NONVOTING_PERIOD = "E418"; string internal constant INPUT_ARRAY_LENGTHS_ARE_NOT_EQUAL = "E419"; string internal constant EC_INVALID_BOOSTS = "E420"; string internal constant EC_ACCOUNT_IS_ALREADY_LIQUIDITY_PROVIDER = "E421"; string internal constant EC_ACCOUNT_HAS_NO_AGREEMENT = "E422"; string internal constant OR_TIMESTAMP_THRESHOLD_SHOULD_BE_GREATER_THAN_ZERO = "E423"; string internal constant OR_UNDERLYING_TOKENS_DECIMALS_TOO_BIG = "E424"; string internal constant OR_REPORTER_MULTIPLIER_TOO_BIG = "E425"; string internal constant SHOULD_HAVE_REVOCABLE_SCHEDULE = "E426"; string internal constant MEMBER_NOT_IN_DELAY_LIST = "E427"; string internal constant DELAY_LIST_LIMIT = "E428"; string internal constant NUMBER_IS_NOT_IN_SCALE = "E429"; string internal constant BB_STRATUM_OF_FIRST_LOYALTY_GROUP_IS_NOT_ZERO = "E430"; string internal constant INPUT_ARRAY_IS_EMPTY = "E431"; string internal constant OR_INCORRECT_PRICE_FEED_ID = "E432"; string internal constant OR_PRICE_AGE_CAN_NOT_BE_ZERO = "E433"; string internal constant OR_INCORRECT_PRICE_FEED_ADDRESS = "E434"; string internal constant OR_INCORRECT_SECONDARY_PRICE_FEED_ADDRESS = "E435"; string internal constant RH_COOLDOWN_START_ALREADY_SET = "E436"; string internal constant RH_INCORRECT_COOLDOWN_START = "E437"; string internal constant RH_COOLDOWN_IS_FINISHED = "E438"; string internal constant RH_INCORRECT_NUMBER_OF_CHARGES = "E439"; string internal constant RH_INCORRECT_CHARGE_SHARE = "E440"; string internal constant RH_COOLDOWN_START_NOT_SET = "E441"; }
Compiler Settings
{"outputSelection":{"*":{"*":["*"],"":["*"]}},"optimizer":{"runs":200,"enabled":true},"metadata":{"useLiteralContent":true},"libraries":{}}
Contract ABI
[{"type":"constructor","stateMutability":"nonpayable","inputs":[{"type":"address","name":"admin","internalType":"address"}]},{"type":"event","name":"NewTokenConfigSet","inputs":[{"type":"address","name":"token","internalType":"address","indexed":false},{"type":"address","name":"proxyPriceFeedAddress","internalType":"address","indexed":false},{"type":"address","name":"secondaryProxyPriceFeedAddress","internalType":"address","indexed":false},{"type":"uint32","name":"maxValidPriceAge","internalType":"uint32","indexed":false},{"type":"uint32","name":"underlyingTokenDecimals","internalType":"uint32","indexed":false},{"type":"uint8","name":"oracleProviderType","internalType":"enum AggregatedPriceOracle.OracleProviderType","indexed":false}],"anonymous":false},{"type":"event","name":"RoleAdminChanged","inputs":[{"type":"bytes32","name":"role","internalType":"bytes32","indexed":true},{"type":"bytes32","name":"previousAdminRole","internalType":"bytes32","indexed":true},{"type":"bytes32","name":"newAdminRole","internalType":"bytes32","indexed":true}],"anonymous":false},{"type":"event","name":"RoleGranted","inputs":[{"type":"bytes32","name":"role","internalType":"bytes32","indexed":true},{"type":"address","name":"account","internalType":"address","indexed":true},{"type":"address","name":"sender","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"RoleRevoked","inputs":[{"type":"bytes32","name":"role","internalType":"bytes32","indexed":true},{"type":"address","name":"account","internalType":"address","indexed":true},{"type":"address","name":"sender","internalType":"address","indexed":true}],"anonymous":false},{"type":"function","stateMutability":"view","outputs":[{"type":"bytes32","name":"","internalType":"bytes32"}],"name":"DEFAULT_ADMIN_ROLE","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"proxyPriceFeedAddress","internalType":"address"},{"type":"address","name":"secondaryProxyPriceFeedAddress","internalType":"address"},{"type":"uint32","name":"maxValidPriceAge","internalType":"uint32"},{"type":"uint32","name":"underlyingTokenDecimals","internalType":"uint32"},{"type":"uint8","name":"oracleProviderType","internalType":"enum AggregatedPriceOracle.OracleProviderType"}],"name":"feedProxies","inputs":[{"type":"address","name":"","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"getAssetPrice","inputs":[{"type":"address","name":"underlyingAsset","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"bytes32","name":"","internalType":"bytes32"}],"name":"getRoleAdmin","inputs":[{"type":"bytes32","name":"role","internalType":"bytes32"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"getUnderlyingPrice","inputs":[{"type":"address","name":"mToken","internalType":"contract IMToken"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"grantRole","inputs":[{"type":"bytes32","name":"role","internalType":"bytes32"},{"type":"address","name":"account","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"hasRole","inputs":[{"type":"bytes32","name":"role","internalType":"bytes32"},{"type":"address","name":"account","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"renounceRole","inputs":[{"type":"bytes32","name":"role","internalType":"bytes32"},{"type":"address","name":"account","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"revokeRole","inputs":[{"type":"bytes32","name":"role","internalType":"bytes32"},{"type":"address","name":"account","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setTokenConfig","inputs":[{"type":"address","name":"underlyingAsset","internalType":"address"},{"type":"address","name":"proxyPriceFeedAddress","internalType":"address"},{"type":"address","name":"secondaryProxyPriceFeedAddress","internalType":"address"},{"type":"uint32","name":"maxValidPriceAge","internalType":"uint32"},{"type":"uint32","name":"underlyingTokenDecimals","internalType":"uint32"},{"type":"uint8","name":"oracleProviderType","internalType":"enum AggregatedPriceOracle.OracleProviderType"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"supportsInterface","inputs":[{"type":"bytes4","name":"interfaceId","internalType":"bytes4"}]}]
Contract Creation Code
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