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Contract Name:
Mailbox
Compiler Version
v0.8.24+commit.e11b9ed9
Optimization Enabled:
Yes with 200 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; import {AccessControlUpgradeable, AccessControlDefaultAdminRulesUpgradeable} from "@openzeppelin/contracts-upgradeable/access/extensions/AccessControlDefaultAdminRulesUpgradeable.sol"; import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import {ReentrancyGuardUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/ReentrancyGuardUpgradeable.sol"; import {ERC165Checker} from "@openzeppelin/contracts/utils/introspection/ERC165Checker.sol"; import {PausableUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/PausableUpgradeable.sol"; import {MessagePath} from "./libs/MessagePath.sol"; import {IMailbox} from "./IMailbox.sol"; import {INotaryConsortium} from "../consortium/INotaryConsortium.sol"; import {RateLimits} from "../libs/RateLimits.sol"; import {LChainId} from "../libs/LChainId.sol"; import {IHandler} from "./IHandler.sol"; import {GMPUtils} from "./libs/GMPUtils.sol"; /** * @title Mailbox to send/receive messages by Lombard Generalized Message Passing Protocol * @author Lombard.Finance * @notice The contract is a part of Lombard Generalized Message Passing protocol */ contract Mailbox is IMailbox, AccessControlDefaultAdminRulesUpgradeable, ReentrancyGuardUpgradeable, PausableUpgradeable { using MessagePath for MessagePath.Details; struct SenderConfig { uint32 maxPayloadSize; bool feeDisabled; } /// @custom:storage-location erc7201:lombardfinance.storage.Mailbox struct MailboxStorage { // Increments with each cross chain operation and should be part of the payload // Makes each payload unique uint256 globalNonce; mapping(bytes32 => bytes32) outboundMessagePath; // Message Path id => destination chain id mapping(bytes32 => bytes32) inboundMessagePath; // Message Path id => Source chain id mapping(bytes32 => bool) deliveredPayload; // sha256(rawPayload) => bool mapping(bytes32 => bool) handledPayload; // sha256(rawPayload) => bool INotaryConsortium consortium; uint32 defaultMaxPayloadSize; mapping(address => SenderConfig) senderConfig; // address => SenderConfig uint256 feePerByte; // wei to be paid per byte of payload } bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE"); bytes32 public constant TREASURER_ROLE = keccak256("TREASURER_ROLE"); /// keccak256(abi.encode(uint256(keccak256("lombardfinance.storage.Mailbox")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant MAILBOX_STORAGE_LOCATION = 0x0278229f5c76f980110e38383ce9a522090076c3f8b366b016a9b1421b307400; /// Allow max 10 KB of data to be sent uint32 internal constant GLOBAL_MAX_PAYLOAD_SIZE = 10000; /// @dev https://docs.openzeppelin.com/upgrades-plugins/1.x/writing-upgradeable#initializing_the_implementation_contract /// @custom:oz-upgrades-unsafe-allow constructor constructor() { _disableInitializers(); } /** * @notice Initializes the contract * @dev defaultAdmin, consortium_ must be non-zero. * @param defaultAdmin Admin address * @param consortium_ Notary Consortium address * @param feePerByte wei to be paid per byte * @param defaultAdminChangeDelay The change delay for defaultAdmin */ function initialize( address defaultAdmin, INotaryConsortium consortium_, uint256 feePerByte, uint48 defaultAdminChangeDelay ) external initializer { __AccessControl_init(); __AccessControlDefaultAdminRules_init( defaultAdminChangeDelay, defaultAdmin ); __ReentrancyGuard_init(); __Pausable_init(); __Mailbox_init(consortium_, feePerByte); } function __Mailbox_init( INotaryConsortium consortium_, uint256 feePerByte ) internal onlyInitializing { // consortium must be nonzero if (address(consortium_) == address(0)) { revert Mailbox_ZeroConsortium(); } MailboxStorage storage $ = _getStorage(); $.consortium = consortium_; $.feePerByte = feePerByte; // nonce must start with nonzero value $.globalNonce = 1; } function consortium() external view returns (INotaryConsortium) { return _getStorage().consortium; } function enableMessagePath( bytes32 destinationChain, bytes32 destinationMailbox ) external onlyRole(DEFAULT_ADMIN_ROLE) { if (destinationChain == bytes32(0)) { revert Mailbox_ZeroChainId(); } if (destinationMailbox == bytes32(0)) { revert Mailbox_ZeroMailbox(); } bytes32 outboundId = _calcOutboundMessagePath(destinationChain); bytes32 inboundId = _calcInboundMessagePath( destinationChain, destinationMailbox ); MailboxStorage storage $ = _getStorage(); // set outbound message path if not exist if ($.outboundMessagePath[outboundId] != bytes32(0)) { revert Mailbox_MessagePathEnabled(outboundId); } $.outboundMessagePath[outboundId] = destinationChain; if ($.inboundMessagePath[inboundId] != bytes32(0)) { revert Mailbox_MessagePathEnabled(inboundId); } // store chain id of remote chain for message path $.inboundMessagePath[inboundId] = destinationChain; emit MessagePathEnabled( destinationChain, inboundId, outboundId, destinationMailbox ); } function disableMessagePath( bytes32 destinationChain, bytes32 destinationMailbox ) external onlyRole(DEFAULT_ADMIN_ROLE) { if (destinationChain == bytes32(0)) { revert Mailbox_ZeroChainId(); } if (destinationMailbox == bytes32(0)) { revert Mailbox_ZeroMailbox(); } MailboxStorage storage $ = _getStorage(); bytes32 outboundId = _calcOutboundMessagePath(destinationChain); bytes32 inboundId = _calcInboundMessagePath( destinationChain, destinationMailbox ); delete $.outboundMessagePath[outboundId]; delete $.inboundMessagePath[inboundId]; emit MessagePathDisabled( destinationChain, inboundId, outboundId, destinationMailbox ); } function _calcInboundMessagePath( bytes32 destinationChain, bytes32 destinationMailbox ) internal view returns (bytes32) { MessagePath.Details memory inboundPath = MessagePath.Details( destinationMailbox, destinationChain, LChainId.get() ); return inboundPath.id(); } function _calcOutboundMessagePath( bytes32 destinationChain ) internal view returns (bytes32) { MessagePath.Details memory outboundPath = MessagePath.Details( GMPUtils.addressToBytes32(address(this)), LChainId.get(), destinationChain ); return outboundPath.id(); } function setDefaultMaxPayloadSize( uint32 maxPayloadSize ) external onlyRole(DEFAULT_ADMIN_ROLE) { if (maxPayloadSize > GLOBAL_MAX_PAYLOAD_SIZE) { revert Mailbox_PayloadOversize( GLOBAL_MAX_PAYLOAD_SIZE, maxPayloadSize ); } _getStorage().defaultMaxPayloadSize = maxPayloadSize; emit DefaultPayloadSizeSet(maxPayloadSize); } function getDefaultMaxPayloadSize() external view returns (uint32) { return _getStorage().defaultMaxPayloadSize; } /** * @notice Set the sender config vars * @dev Only owner. Max payload size is limited by `GLOBAL_MAX_PAYLOAD_SIZE` * @param sender Address of the sender * @param maxPayloadSize Max Payload Size allowed for sender (when set to zero, use `defaultMaxPayloadSize`) * @param feeDisabled If true, not apply fee for message */ function setSenderConfig( address sender, uint32 maxPayloadSize, bool feeDisabled ) external onlyRole(DEFAULT_ADMIN_ROLE) { if (maxPayloadSize > GLOBAL_MAX_PAYLOAD_SIZE) { revert Mailbox_PayloadOversize( GLOBAL_MAX_PAYLOAD_SIZE, maxPayloadSize ); } SenderConfig storage conf = _getStorage().senderConfig[sender]; conf.maxPayloadSize = maxPayloadSize; conf.feeDisabled = feeDisabled; emit SenderConfigUpdated(sender, maxPayloadSize, feeDisabled); } function getSenderConfigWithDefault( address sender ) external view returns (SenderConfig memory) { return _getSenderConfigWithDefault(_getStorage(), sender); } function setFee(uint256 weiPerByte) external onlyRole(DEFAULT_ADMIN_ROLE) { _getStorage().feePerByte = weiPerByte; emit FeePerByteSet(weiPerByte); } // only body size affect fee estimation function getFee( address sender, bytes calldata body ) external view returns (uint256) { bytes memory rawPayload = GMPUtils.encodePayload( bytes32(0), 0, GMPUtils.addressToBytes32(sender), bytes32(0), bytes32(0), body ); MailboxStorage storage $ = _getStorage(); return _calcFee( _getSenderConfigWithDefault($, sender), $.feePerByte, rawPayload.length ); } /** * @notice Send the message to the `destinationChain` and `recipient` * @dev Encodes the message, and emits a `MessageSent` event with consortium compatible payload. * @param destinationChain Lombard chain id of destination chain * @param recipient Address of message recipient on destination chain as bytes32 (must support IHandler interface) * @param destinationCaller Caller on the `destinationChain`, as bytes32 * @param body Contents of the message (bytes) */ function send( bytes32 destinationChain, bytes32 recipient, bytes32 destinationCaller, bytes calldata body ) external payable override whenNotPaused nonReentrant returns (uint256, bytes32) { // recipient must be nonzero if (recipient == bytes32(0)) { revert Mailbox_ZeroRecipient(); } bytes32 outboundId = _calcOutboundMessagePath(destinationChain); MailboxStorage storage $ = _getStorage(); // revert if message path disabled if ($.outboundMessagePath[outboundId] == bytes32(0)) { revert Mailbox_MessagePathDisabled(outboundId); } uint256 nonce = $.globalNonce++; address msgSender = _msgSender(); // prepare payload bytes memory rawPayload = GMPUtils.encodePayload( outboundId, nonce, GMPUtils.addressToBytes32(msgSender), recipient, destinationCaller, body ); bytes32 payloadHash = GMPUtils.hash(rawPayload); _validatePayloadSizeAndFee( $, payloadHash, rawPayload.length, msgSender ); emit MessageSent(destinationChain, msgSender, recipient, rawPayload); return (nonce, payloadHash); } function _validatePayloadSizeAndFee( MailboxStorage storage $, bytes32 payloadHash, uint256 payloadSize, address msgSender ) internal { SenderConfig memory senderCfg = _getSenderConfigWithDefault( $, msgSender ); _validatePayloadSize(senderCfg, payloadSize); uint256 fee = _calcFee(senderCfg, $.feePerByte, payloadSize); // we allow to pay more // in this case fee rate of message increased // relayer would process such messages in priority if (msg.value < fee) { revert Mailbox_NotEnoughFee(fee, msg.value); } emit MessagePaid(payloadHash, msgSender, payloadSize, msg.value); } // @dev when `defaultMaxPayloadSize` equals 0, there whitelisting of allowed senders function _validatePayloadSize( SenderConfig memory conf, uint256 payloadSize ) internal pure { if (payloadSize > conf.maxPayloadSize) { revert Mailbox_PayloadOversize(conf.maxPayloadSize, payloadSize); } } function _calcFee( SenderConfig memory conf, uint256 feePerByte, uint256 payloadSize ) internal pure returns (uint256) { // there would be a case when sender is excluded from fee if (conf.feeDisabled) { return 0; } return payloadSize * feePerByte; } /** * @notice Deliver a message. The mailbox does not track the nonce or hash of the payload, * the handler must prevent double-spending if such logic applies. * The valid payload is decoded and passed to the specified receiver, which must * implement the IHandler interface to process the payload. * * @dev Payload is ABI encoded with selector * MessageV1(path bytes32, nonce uint256, sender bytes32, recipient bytes32, destinationCaller bytes32, body bytes) * @param rawPayload Payload bytes * @param proof ABI encoded array of signatures * @return payloadHash The hash of payload * @return success The bool value telling if message was delivered successfully * @return result Execution result as bytes array */ function deliverAndHandle( bytes calldata rawPayload, bytes calldata proof ) external override whenNotPaused nonReentrant returns (bytes32, bool, bytes memory) { // TODO: implement deliver only method, then relayer can only deliver payload without attempt to execute GMPUtils.Payload memory payload = GMPUtils.decodeAndValidatePayload( rawPayload ); MailboxStorage storage $ = _getStorage(); _deliver($, payload, payload.id, rawPayload, proof); (bool success, bytes memory res) = _handle($, payload, payload.id); return (payload.id, success, res); } function _deliver( MailboxStorage storage $, GMPUtils.Payload memory payload, bytes32 payloadHash, bytes calldata rawPayload, bytes calldata proof ) internal { // revert if message path disabled if ($.inboundMessagePath[payload.msgPath] == bytes32(0)) { revert Mailbox_MessagePathDisabled(payload.msgPath); } _verifyPayload( $, payloadHash, payload.msgNonce, payload.msgSender, proof, rawPayload ); } function _verifyPayload( MailboxStorage storage $, bytes32 payloadHash, uint256 msgNonce, bytes32 msgSender, bytes calldata proof, bytes calldata rawPayload ) internal virtual { // if not verified check the proof if (!$.deliveredPayload[payloadHash]) { $.consortium.checkProof(payloadHash, proof); $.deliveredPayload[payloadHash] = true; emit MessageDelivered( payloadHash, _msgSender(), msgNonce, msgSender, rawPayload ); } } // @return bool False if handler reverts function _handle( MailboxStorage storage $, GMPUtils.Payload memory payload, bytes32 payloadHash ) internal returns (bool, bytes memory) { address msgSender = _msgSender(); // verify who is able to execute the message if ( payload.msgDestinationCaller != address(0) && payload.msgDestinationCaller != msgSender ) { revert Mailbox_UnexpectedDestinationCaller( payload.msgDestinationCaller, msgSender ); } // check recipient interface if ( !ERC165Checker.supportsInterface( payload.msgRecipient, type(IHandler).interfaceId ) ) { revert Mailbox_HandlerNotImplemented(); } try IHandler(payload.msgRecipient).handlePayload(payload) returns ( bytes memory executionResult ) { emit MessageHandled(payloadHash, msgSender, executionResult); $.handledPayload[payloadHash] = true; return (true, executionResult); } catch Error(string memory reason) { emit MessageHandleError(payloadHash, msgSender, reason, ""); } catch (bytes memory lowLevelData) { emit MessageHandleError(payloadHash, msgSender, "", lowLevelData); } return (false, new bytes(0)); } /** * @notice Withdraw all accumulated fee to msg sender * @dev When not paused. Only TREASURER_ROLE */ function withdrawFee() external whenNotPaused onlyRole(TREASURER_ROLE) nonReentrant { uint256 amount = address(this).balance; if (amount == 0) { revert Mailbox_ZeroAmount(); } (bool success, ) = payable(_msgSender()).call{value: amount}(""); if (!success) { revert Mailbox_CallFailed(); } emit FeeWithdrawn(_msgSender(), amount); } /** * @notice Rescue ERC20 tokens locked up in this contract. * @dev When not paused. Only TREASURER_ROLE * @param tokenContract ERC20 token contract address * @param to Recipient address * @param amount Amount to withdraw */ function rescueERC20( IERC20 tokenContract, address to, uint256 amount ) external whenNotPaused onlyRole(TREASURER_ROLE) { SafeERC20.safeTransfer(tokenContract, to, amount); } function pause() external onlyRole(PAUSER_ROLE) { _pause(); } function unpause() external onlyRole(DEFAULT_ADMIN_ROLE) { _unpause(); } function getInboundMessagePath( bytes32 pathId ) external view override returns (bytes32) { return _getStorage().inboundMessagePath[pathId]; } function _getStorage() private pure returns (MailboxStorage storage $) { assembly { $.slot := MAILBOX_STORAGE_LOCATION } } function _getSenderConfigWithDefault( MailboxStorage storage $, address sender ) internal view returns (SenderConfig memory) { SenderConfig memory cfg = $.senderConfig[sender]; if (cfg.maxPayloadSize == 0) { cfg.maxPayloadSize = $.defaultMaxPayloadSize; } return cfg; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/AccessControl.sol) pragma solidity ^0.8.20; import {IAccessControl} from "@openzeppelin/contracts/access/IAccessControl.sol"; import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol"; import {ERC165Upgradeable} from "../utils/introspection/ERC165Upgradeable.sol"; import {Initializable} from "../proxy/utils/Initializable.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 AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControl, ERC165Upgradeable { struct RoleData { mapping(address account => bool) hasRole; bytes32 adminRole; } bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /// @custom:storage-location erc7201:openzeppelin.storage.AccessControl struct AccessControlStorage { mapping(bytes32 role => RoleData) _roles; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.AccessControl")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant AccessControlStorageLocation = 0x02dd7bc7dec4dceedda775e58dd541e08a116c6c53815c0bd028192f7b626800; function _getAccessControlStorage() private pure returns (AccessControlStorage storage $) { assembly { $.slot := AccessControlStorageLocation } } /** * @dev Modifier that checks that an account has a specific role. Reverts * with an {AccessControlUnauthorizedAccount} error including the required role. */ modifier onlyRole(bytes32 role) { _checkRole(role); _; } function __AccessControl_init() internal onlyInitializing { } function __AccessControl_init_unchained() internal onlyInitializing { } /** * @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 returns (bool) { AccessControlStorage storage $ = _getAccessControlStorage(); return $._roles[role].hasRole[account]; } /** * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `_msgSender()` * is missing `role`. Overriding this function changes the behavior of the {onlyRole} modifier. */ function _checkRole(bytes32 role) internal view virtual { _checkRole(role, _msgSender()); } /** * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `account` * is missing `role`. */ function _checkRole(bytes32 role, address account) internal view virtual { if (!hasRole(role, account)) { revert AccessControlUnauthorizedAccount(account, role); } } /** * @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 returns (bytes32) { AccessControlStorage storage $ = _getAccessControlStorage(); 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 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 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 `callerConfirmation`. * * May emit a {RoleRevoked} event. */ function renounceRole(bytes32 role, address callerConfirmation) public virtual { if (callerConfirmation != _msgSender()) { revert AccessControlBadConfirmation(); } _revokeRole(role, callerConfirmation); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { AccessControlStorage storage $ = _getAccessControlStorage(); bytes32 previousAdminRole = getRoleAdmin(role); $._roles[role].adminRole = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /** * @dev Attempts to grant `role` to `account` and returns a boolean indicating if `role` was granted. * * Internal function without access restriction. * * May emit a {RoleGranted} event. */ function _grantRole(bytes32 role, address account) internal virtual returns (bool) { AccessControlStorage storage $ = _getAccessControlStorage(); if (!hasRole(role, account)) { $._roles[role].hasRole[account] = true; emit RoleGranted(role, account, _msgSender()); return true; } else { return false; } } /** * @dev Attempts to revoke `role` to `account` and returns a boolean indicating if `role` was revoked. * * Internal function without access restriction. * * May emit a {RoleRevoked} event. */ function _revokeRole(bytes32 role, address account) internal virtual returns (bool) { AccessControlStorage storage $ = _getAccessControlStorage(); if (hasRole(role, account)) { $._roles[role].hasRole[account] = false; emit RoleRevoked(role, account, _msgSender()); return true; } else { return false; } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/extensions/AccessControlDefaultAdminRules.sol) pragma solidity ^0.8.20; import {IAccessControlDefaultAdminRules} from "@openzeppelin/contracts/access/extensions/IAccessControlDefaultAdminRules.sol"; import {AccessControlUpgradeable} from "../AccessControlUpgradeable.sol"; import {IAccessControl} from "@openzeppelin/contracts/access/IAccessControl.sol"; import {SafeCast} from "@openzeppelin/contracts/utils/math/SafeCast.sol"; import {Math} from "@openzeppelin/contracts/utils/math/Math.sol"; import {IERC5313} from "@openzeppelin/contracts/interfaces/IERC5313.sol"; import {Initializable} from "../../proxy/utils/Initializable.sol"; /** * @dev Extension of {AccessControl} that allows specifying special rules to manage * the `DEFAULT_ADMIN_ROLE` holder, which is a sensitive role with special permissions * over other roles that may potentially have privileged rights in the system. * * If a specific role doesn't have an admin role assigned, the holder of the * `DEFAULT_ADMIN_ROLE` will have the ability to grant it and revoke it. * * This contract implements the following risk mitigations on top of {AccessControl}: * * * Only one account holds the `DEFAULT_ADMIN_ROLE` since deployment until it's potentially renounced. * * Enforces a 2-step process to transfer the `DEFAULT_ADMIN_ROLE` to another account. * * Enforces a configurable delay between the two steps, with the ability to cancel before the transfer is accepted. * * The delay can be changed by scheduling, see {changeDefaultAdminDelay}. * * It is not possible to use another role to manage the `DEFAULT_ADMIN_ROLE`. * * Example usage: * * ```solidity * contract MyToken is AccessControlDefaultAdminRules { * constructor() AccessControlDefaultAdminRules( * 3 days, * msg.sender // Explicit initial `DEFAULT_ADMIN_ROLE` holder * ) {} * } * ``` */ abstract contract AccessControlDefaultAdminRulesUpgradeable is Initializable, IAccessControlDefaultAdminRules, IERC5313, AccessControlUpgradeable { /// @custom:storage-location erc7201:openzeppelin.storage.AccessControlDefaultAdminRules struct AccessControlDefaultAdminRulesStorage { // pending admin pair read/written together frequently address _pendingDefaultAdmin; uint48 _pendingDefaultAdminSchedule; // 0 == unset uint48 _currentDelay; address _currentDefaultAdmin; // pending delay pair read/written together frequently uint48 _pendingDelay; uint48 _pendingDelaySchedule; // 0 == unset } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.AccessControlDefaultAdminRules")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant AccessControlDefaultAdminRulesStorageLocation = 0xeef3dac4538c82c8ace4063ab0acd2d15cdb5883aa1dff7c2673abb3d8698400; function _getAccessControlDefaultAdminRulesStorage() private pure returns (AccessControlDefaultAdminRulesStorage storage $) { assembly { $.slot := AccessControlDefaultAdminRulesStorageLocation } } /** * @dev Sets the initial values for {defaultAdminDelay} and {defaultAdmin} address. */ function __AccessControlDefaultAdminRules_init(uint48 initialDelay, address initialDefaultAdmin) internal onlyInitializing { __AccessControlDefaultAdminRules_init_unchained(initialDelay, initialDefaultAdmin); } function __AccessControlDefaultAdminRules_init_unchained(uint48 initialDelay, address initialDefaultAdmin) internal onlyInitializing { AccessControlDefaultAdminRulesStorage storage $ = _getAccessControlDefaultAdminRulesStorage(); if (initialDefaultAdmin == address(0)) { revert AccessControlInvalidDefaultAdmin(address(0)); } $._currentDelay = initialDelay; _grantRole(DEFAULT_ADMIN_ROLE, initialDefaultAdmin); } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControlDefaultAdminRules).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC5313-owner}. */ function owner() public view virtual returns (address) { return defaultAdmin(); } /// /// Override AccessControl role management /// /** * @dev See {AccessControl-grantRole}. Reverts for `DEFAULT_ADMIN_ROLE`. */ function grantRole(bytes32 role, address account) public virtual override(AccessControlUpgradeable, IAccessControl) { if (role == DEFAULT_ADMIN_ROLE) { revert AccessControlEnforcedDefaultAdminRules(); } super.grantRole(role, account); } /** * @dev See {AccessControl-revokeRole}. Reverts for `DEFAULT_ADMIN_ROLE`. */ function revokeRole(bytes32 role, address account) public virtual override(AccessControlUpgradeable, IAccessControl) { if (role == DEFAULT_ADMIN_ROLE) { revert AccessControlEnforcedDefaultAdminRules(); } super.revokeRole(role, account); } /** * @dev See {AccessControl-renounceRole}. * * For the `DEFAULT_ADMIN_ROLE`, it only allows renouncing in two steps by first calling * {beginDefaultAdminTransfer} to the `address(0)`, so it's required that the {pendingDefaultAdmin} schedule * has also passed when calling this function. * * After its execution, it will not be possible to call `onlyRole(DEFAULT_ADMIN_ROLE)` functions. * * NOTE: Renouncing `DEFAULT_ADMIN_ROLE` will leave the contract without a {defaultAdmin}, * thereby disabling any functionality that is only available for it, and the possibility of reassigning a * non-administrated role. */ function renounceRole(bytes32 role, address account) public virtual override(AccessControlUpgradeable, IAccessControl) { AccessControlDefaultAdminRulesStorage storage $ = _getAccessControlDefaultAdminRulesStorage(); if (role == DEFAULT_ADMIN_ROLE && account == defaultAdmin()) { (address newDefaultAdmin, uint48 schedule) = pendingDefaultAdmin(); if (newDefaultAdmin != address(0) || !_isScheduleSet(schedule) || !_hasSchedulePassed(schedule)) { revert AccessControlEnforcedDefaultAdminDelay(schedule); } delete $._pendingDefaultAdminSchedule; } super.renounceRole(role, account); } /** * @dev See {AccessControl-_grantRole}. * * For `DEFAULT_ADMIN_ROLE`, it only allows granting if there isn't already a {defaultAdmin} or if the * role has been previously renounced. * * NOTE: Exposing this function through another mechanism may make the `DEFAULT_ADMIN_ROLE` * assignable again. Make sure to guarantee this is the expected behavior in your implementation. */ function _grantRole(bytes32 role, address account) internal virtual override returns (bool) { AccessControlDefaultAdminRulesStorage storage $ = _getAccessControlDefaultAdminRulesStorage(); if (role == DEFAULT_ADMIN_ROLE) { if (defaultAdmin() != address(0)) { revert AccessControlEnforcedDefaultAdminRules(); } $._currentDefaultAdmin = account; } return super._grantRole(role, account); } /** * @dev See {AccessControl-_revokeRole}. */ function _revokeRole(bytes32 role, address account) internal virtual override returns (bool) { AccessControlDefaultAdminRulesStorage storage $ = _getAccessControlDefaultAdminRulesStorage(); if (role == DEFAULT_ADMIN_ROLE && account == defaultAdmin()) { delete $._currentDefaultAdmin; } return super._revokeRole(role, account); } /** * @dev See {AccessControl-_setRoleAdmin}. Reverts for `DEFAULT_ADMIN_ROLE`. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual override { if (role == DEFAULT_ADMIN_ROLE) { revert AccessControlEnforcedDefaultAdminRules(); } super._setRoleAdmin(role, adminRole); } /// /// AccessControlDefaultAdminRules accessors /// /** * @inheritdoc IAccessControlDefaultAdminRules */ function defaultAdmin() public view virtual returns (address) { AccessControlDefaultAdminRulesStorage storage $ = _getAccessControlDefaultAdminRulesStorage(); return $._currentDefaultAdmin; } /** * @inheritdoc IAccessControlDefaultAdminRules */ function pendingDefaultAdmin() public view virtual returns (address newAdmin, uint48 schedule) { AccessControlDefaultAdminRulesStorage storage $ = _getAccessControlDefaultAdminRulesStorage(); return ($._pendingDefaultAdmin, $._pendingDefaultAdminSchedule); } /** * @inheritdoc IAccessControlDefaultAdminRules */ function defaultAdminDelay() public view virtual returns (uint48) { AccessControlDefaultAdminRulesStorage storage $ = _getAccessControlDefaultAdminRulesStorage(); uint48 schedule = $._pendingDelaySchedule; return (_isScheduleSet(schedule) && _hasSchedulePassed(schedule)) ? $._pendingDelay : $._currentDelay; } /** * @inheritdoc IAccessControlDefaultAdminRules */ function pendingDefaultAdminDelay() public view virtual returns (uint48 newDelay, uint48 schedule) { AccessControlDefaultAdminRulesStorage storage $ = _getAccessControlDefaultAdminRulesStorage(); schedule = $._pendingDelaySchedule; return (_isScheduleSet(schedule) && !_hasSchedulePassed(schedule)) ? ($._pendingDelay, schedule) : (0, 0); } /** * @inheritdoc IAccessControlDefaultAdminRules */ function defaultAdminDelayIncreaseWait() public view virtual returns (uint48) { return 5 days; } /// /// AccessControlDefaultAdminRules public and internal setters for defaultAdmin/pendingDefaultAdmin /// /** * @inheritdoc IAccessControlDefaultAdminRules */ function beginDefaultAdminTransfer(address newAdmin) public virtual onlyRole(DEFAULT_ADMIN_ROLE) { _beginDefaultAdminTransfer(newAdmin); } /** * @dev See {beginDefaultAdminTransfer}. * * Internal function without access restriction. */ function _beginDefaultAdminTransfer(address newAdmin) internal virtual { uint48 newSchedule = SafeCast.toUint48(block.timestamp) + defaultAdminDelay(); _setPendingDefaultAdmin(newAdmin, newSchedule); emit DefaultAdminTransferScheduled(newAdmin, newSchedule); } /** * @inheritdoc IAccessControlDefaultAdminRules */ function cancelDefaultAdminTransfer() public virtual onlyRole(DEFAULT_ADMIN_ROLE) { _cancelDefaultAdminTransfer(); } /** * @dev See {cancelDefaultAdminTransfer}. * * Internal function without access restriction. */ function _cancelDefaultAdminTransfer() internal virtual { _setPendingDefaultAdmin(address(0), 0); } /** * @inheritdoc IAccessControlDefaultAdminRules */ function acceptDefaultAdminTransfer() public virtual { (address newDefaultAdmin, ) = pendingDefaultAdmin(); if (_msgSender() != newDefaultAdmin) { // Enforce newDefaultAdmin explicit acceptance. revert AccessControlInvalidDefaultAdmin(_msgSender()); } _acceptDefaultAdminTransfer(); } /** * @dev See {acceptDefaultAdminTransfer}. * * Internal function without access restriction. */ function _acceptDefaultAdminTransfer() internal virtual { AccessControlDefaultAdminRulesStorage storage $ = _getAccessControlDefaultAdminRulesStorage(); (address newAdmin, uint48 schedule) = pendingDefaultAdmin(); if (!_isScheduleSet(schedule) || !_hasSchedulePassed(schedule)) { revert AccessControlEnforcedDefaultAdminDelay(schedule); } _revokeRole(DEFAULT_ADMIN_ROLE, defaultAdmin()); _grantRole(DEFAULT_ADMIN_ROLE, newAdmin); delete $._pendingDefaultAdmin; delete $._pendingDefaultAdminSchedule; } /// /// AccessControlDefaultAdminRules public and internal setters for defaultAdminDelay/pendingDefaultAdminDelay /// /** * @inheritdoc IAccessControlDefaultAdminRules */ function changeDefaultAdminDelay(uint48 newDelay) public virtual onlyRole(DEFAULT_ADMIN_ROLE) { _changeDefaultAdminDelay(newDelay); } /** * @dev See {changeDefaultAdminDelay}. * * Internal function without access restriction. */ function _changeDefaultAdminDelay(uint48 newDelay) internal virtual { uint48 newSchedule = SafeCast.toUint48(block.timestamp) + _delayChangeWait(newDelay); _setPendingDelay(newDelay, newSchedule); emit DefaultAdminDelayChangeScheduled(newDelay, newSchedule); } /** * @inheritdoc IAccessControlDefaultAdminRules */ function rollbackDefaultAdminDelay() public virtual onlyRole(DEFAULT_ADMIN_ROLE) { _rollbackDefaultAdminDelay(); } /** * @dev See {rollbackDefaultAdminDelay}. * * Internal function without access restriction. */ function _rollbackDefaultAdminDelay() internal virtual { _setPendingDelay(0, 0); } /** * @dev Returns the amount of seconds to wait after the `newDelay` will * become the new {defaultAdminDelay}. * * The value returned guarantees that if the delay is reduced, it will go into effect * after a wait that honors the previously set delay. * * See {defaultAdminDelayIncreaseWait}. */ function _delayChangeWait(uint48 newDelay) internal view virtual returns (uint48) { uint48 currentDelay = defaultAdminDelay(); // When increasing the delay, we schedule the delay change to occur after a period of "new delay" has passed, up // to a maximum given by defaultAdminDelayIncreaseWait, by default 5 days. For example, if increasing from 1 day // to 3 days, the new delay will come into effect after 3 days. If increasing from 1 day to 10 days, the new // delay will come into effect after 5 days. The 5 day wait period is intended to be able to fix an error like // using milliseconds instead of seconds. // // When decreasing the delay, we wait the difference between "current delay" and "new delay". This guarantees // that an admin transfer cannot be made faster than "current delay" at the time the delay change is scheduled. // For example, if decreasing from 10 days to 3 days, the new delay will come into effect after 7 days. return newDelay > currentDelay ? uint48(Math.min(newDelay, defaultAdminDelayIncreaseWait())) // no need to safecast, both inputs are uint48 : currentDelay - newDelay; } /// /// Private setters /// /** * @dev Setter of the tuple for pending admin and its schedule. * * May emit a DefaultAdminTransferCanceled event. */ function _setPendingDefaultAdmin(address newAdmin, uint48 newSchedule) private { AccessControlDefaultAdminRulesStorage storage $ = _getAccessControlDefaultAdminRulesStorage(); (, uint48 oldSchedule) = pendingDefaultAdmin(); $._pendingDefaultAdmin = newAdmin; $._pendingDefaultAdminSchedule = newSchedule; // An `oldSchedule` from `pendingDefaultAdmin()` is only set if it hasn't been accepted. if (_isScheduleSet(oldSchedule)) { // Emit for implicit cancellations when another default admin was scheduled. emit DefaultAdminTransferCanceled(); } } /** * @dev Setter of the tuple for pending delay and its schedule. * * May emit a DefaultAdminDelayChangeCanceled event. */ function _setPendingDelay(uint48 newDelay, uint48 newSchedule) private { AccessControlDefaultAdminRulesStorage storage $ = _getAccessControlDefaultAdminRulesStorage(); uint48 oldSchedule = $._pendingDelaySchedule; if (_isScheduleSet(oldSchedule)) { if (_hasSchedulePassed(oldSchedule)) { // Materialize a virtual delay $._currentDelay = $._pendingDelay; } else { // Emit for implicit cancellations when another delay was scheduled. emit DefaultAdminDelayChangeCanceled(); } } $._pendingDelay = newDelay; $._pendingDelaySchedule = newSchedule; } /// /// Private helpers /// /** * @dev Defines if an `schedule` is considered set. For consistency purposes. */ function _isScheduleSet(uint48 schedule) private pure returns (bool) { return schedule != 0; } /** * @dev Defines if an `schedule` is considered passed. For consistency purposes. */ function _hasSchedulePassed(uint48 schedule) private view returns (bool) { return schedule < block.timestamp; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.20; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ```solidity * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Storage of the initializable contract. * * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions * when using with upgradeable contracts. * * @custom:storage-location erc7201:openzeppelin.storage.Initializable */ struct InitializableStorage { /** * @dev Indicates that the contract has been initialized. */ uint64 _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool _initializing; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00; /** * @dev The contract is already initialized. */ error InvalidInitialization(); /** * @dev The contract is not initializing. */ error NotInitializing(); /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint64 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. * * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in * production. * * Emits an {Initialized} event. */ modifier initializer() { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); // Cache values to avoid duplicated sloads bool isTopLevelCall = !$._initializing; uint64 initialized = $._initialized; // Allowed calls: // - initialSetup: the contract is not in the initializing state and no previous version was // initialized // - construction: the contract is initialized at version 1 (no reininitialization) and the // current contract is just being deployed bool initialSetup = initialized == 0 && isTopLevelCall; bool construction = initialized == 1 && address(this).code.length == 0; if (!initialSetup && !construction) { revert InvalidInitialization(); } $._initialized = 1; if (isTopLevelCall) { $._initializing = true; } _; if (isTopLevelCall) { $._initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * A reinitializer may be used after the original initialization step. This is essential to configure modules that * are added through upgrades and that require initialization. * * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer` * cannot be nested. If one is invoked in the context of another, execution will revert. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. * * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization. * * Emits an {Initialized} event. */ modifier reinitializer(uint64 version) { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); if ($._initializing || $._initialized >= version) { revert InvalidInitialization(); } $._initialized = version; $._initializing = true; _; $._initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { _checkInitializing(); _; } /** * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}. */ function _checkInitializing() internal view virtual { if (!_isInitializing()) { revert NotInitializing(); } } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. * * Emits an {Initialized} event the first time it is successfully executed. */ function _disableInitializers() internal virtual { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); if ($._initializing) { revert InvalidInitialization(); } if ($._initialized != type(uint64).max) { $._initialized = type(uint64).max; emit Initialized(type(uint64).max); } } /** * @dev Returns the highest version that has been initialized. See {reinitializer}. */ function _getInitializedVersion() internal view returns (uint64) { return _getInitializableStorage()._initialized; } /** * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}. */ function _isInitializing() internal view returns (bool) { return _getInitializableStorage()._initializing; } /** * @dev Returns a pointer to the storage namespace. */ // solhint-disable-next-line var-name-mixedcase function _getInitializableStorage() private pure returns (InitializableStorage storage $) { assembly { $.slot := INITIALIZABLE_STORAGE } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol) pragma solidity ^0.8.20; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { } function __Context_init_unchained() internal onlyInitializing { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/ERC165.sol) pragma solidity ^0.8.20; import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol"; import {Initializable} from "../../proxy/utils/Initializable.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); * } * ``` */ abstract contract ERC165Upgradeable is Initializable, IERC165 { function __ERC165_init() internal onlyInitializing { } function __ERC165_init_unchained() internal onlyInitializing { } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Pausable.sol) pragma solidity ^0.8.20; import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol"; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract PausableUpgradeable is Initializable, ContextUpgradeable { /// @custom:storage-location erc7201:openzeppelin.storage.Pausable struct PausableStorage { bool _paused; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Pausable")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant PausableStorageLocation = 0xcd5ed15c6e187e77e9aee88184c21f4f2182ab5827cb3b7e07fbedcd63f03300; function _getPausableStorage() private pure returns (PausableStorage storage $) { assembly { $.slot := PausableStorageLocation } } /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); /** * @dev The operation failed because the contract is paused. */ error EnforcedPause(); /** * @dev The operation failed because the contract is not paused. */ error ExpectedPause(); /** * @dev Initializes the contract in unpaused state. */ function __Pausable_init() internal onlyInitializing { __Pausable_init_unchained(); } function __Pausable_init_unchained() internal onlyInitializing { PausableStorage storage $ = _getPausableStorage(); $._paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { PausableStorage storage $ = _getPausableStorage(); return $._paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { if (paused()) { revert EnforcedPause(); } } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { if (!paused()) { revert ExpectedPause(); } } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { PausableStorage storage $ = _getPausableStorage(); $._paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { PausableStorage storage $ = _getPausableStorage(); $._paused = false; emit Unpaused(_msgSender()); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/ReentrancyGuard.sol) pragma solidity ^0.8.20; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuardUpgradeable is Initializable { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant NOT_ENTERED = 1; uint256 private constant ENTERED = 2; /// @custom:storage-location erc7201:openzeppelin.storage.ReentrancyGuard struct ReentrancyGuardStorage { uint256 _status; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ReentrancyGuard")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant ReentrancyGuardStorageLocation = 0x9b779b17422d0df92223018b32b4d1fa46e071723d6817e2486d003becc55f00; function _getReentrancyGuardStorage() private pure returns (ReentrancyGuardStorage storage $) { assembly { $.slot := ReentrancyGuardStorageLocation } } /** * @dev Unauthorized reentrant call. */ error ReentrancyGuardReentrantCall(); function __ReentrancyGuard_init() internal onlyInitializing { __ReentrancyGuard_init_unchained(); } function __ReentrancyGuard_init_unchained() internal onlyInitializing { ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage(); $._status = NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage(); // On the first call to nonReentrant, _status will be NOT_ENTERED if ($._status == ENTERED) { revert ReentrancyGuardReentrantCall(); } // Any calls to nonReentrant after this point will fail $._status = ENTERED; } function _nonReentrantAfter() private { ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage(); // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) $._status = NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage(); return $._status == ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/extensions/IAccessControlDefaultAdminRules.sol) pragma solidity ^0.8.20; import {IAccessControl} from "../IAccessControl.sol"; /** * @dev External interface of AccessControlDefaultAdminRules declared to support ERC165 detection. */ interface IAccessControlDefaultAdminRules is IAccessControl { /** * @dev The new default admin is not a valid default admin. */ error AccessControlInvalidDefaultAdmin(address defaultAdmin); /** * @dev At least one of the following rules was violated: * * - The `DEFAULT_ADMIN_ROLE` must only be managed by itself. * - The `DEFAULT_ADMIN_ROLE` must only be held by one account at the time. * - Any `DEFAULT_ADMIN_ROLE` transfer must be in two delayed steps. */ error AccessControlEnforcedDefaultAdminRules(); /** * @dev The delay for transferring the default admin delay is enforced and * the operation must wait until `schedule`. * * NOTE: `schedule` can be 0 indicating there's no transfer scheduled. */ error AccessControlEnforcedDefaultAdminDelay(uint48 schedule); /** * @dev Emitted when a {defaultAdmin} transfer is started, setting `newAdmin` as the next * address to become the {defaultAdmin} by calling {acceptDefaultAdminTransfer} only after `acceptSchedule` * passes. */ event DefaultAdminTransferScheduled(address indexed newAdmin, uint48 acceptSchedule); /** * @dev Emitted when a {pendingDefaultAdmin} is reset if it was never accepted, regardless of its schedule. */ event DefaultAdminTransferCanceled(); /** * @dev Emitted when a {defaultAdminDelay} change is started, setting `newDelay` as the next * delay to be applied between default admin transfer after `effectSchedule` has passed. */ event DefaultAdminDelayChangeScheduled(uint48 newDelay, uint48 effectSchedule); /** * @dev Emitted when a {pendingDefaultAdminDelay} is reset if its schedule didn't pass. */ event DefaultAdminDelayChangeCanceled(); /** * @dev Returns the address of the current `DEFAULT_ADMIN_ROLE` holder. */ function defaultAdmin() external view returns (address); /** * @dev Returns a tuple of a `newAdmin` and an accept schedule. * * After the `schedule` passes, the `newAdmin` will be able to accept the {defaultAdmin} role * by calling {acceptDefaultAdminTransfer}, completing the role transfer. * * A zero value only in `acceptSchedule` indicates no pending admin transfer. * * NOTE: A zero address `newAdmin` means that {defaultAdmin} is being renounced. */ function pendingDefaultAdmin() external view returns (address newAdmin, uint48 acceptSchedule); /** * @dev Returns the delay required to schedule the acceptance of a {defaultAdmin} transfer started. * * This delay will be added to the current timestamp when calling {beginDefaultAdminTransfer} to set * the acceptance schedule. * * NOTE: If a delay change has been scheduled, it will take effect as soon as the schedule passes, making this * function returns the new delay. See {changeDefaultAdminDelay}. */ function defaultAdminDelay() external view returns (uint48); /** * @dev Returns a tuple of `newDelay` and an effect schedule. * * After the `schedule` passes, the `newDelay` will get into effect immediately for every * new {defaultAdmin} transfer started with {beginDefaultAdminTransfer}. * * A zero value only in `effectSchedule` indicates no pending delay change. * * NOTE: A zero value only for `newDelay` means that the next {defaultAdminDelay} * will be zero after the effect schedule. */ function pendingDefaultAdminDelay() external view returns (uint48 newDelay, uint48 effectSchedule); /** * @dev Starts a {defaultAdmin} transfer by setting a {pendingDefaultAdmin} scheduled for acceptance * after the current timestamp plus a {defaultAdminDelay}. * * Requirements: * * - Only can be called by the current {defaultAdmin}. * * Emits a DefaultAdminRoleChangeStarted event. */ function beginDefaultAdminTransfer(address newAdmin) external; /** * @dev Cancels a {defaultAdmin} transfer previously started with {beginDefaultAdminTransfer}. * * A {pendingDefaultAdmin} not yet accepted can also be cancelled with this function. * * Requirements: * * - Only can be called by the current {defaultAdmin}. * * May emit a DefaultAdminTransferCanceled event. */ function cancelDefaultAdminTransfer() external; /** * @dev Completes a {defaultAdmin} transfer previously started with {beginDefaultAdminTransfer}. * * After calling the function: * * - `DEFAULT_ADMIN_ROLE` should be granted to the caller. * - `DEFAULT_ADMIN_ROLE` should be revoked from the previous holder. * - {pendingDefaultAdmin} should be reset to zero values. * * Requirements: * * - Only can be called by the {pendingDefaultAdmin}'s `newAdmin`. * - The {pendingDefaultAdmin}'s `acceptSchedule` should've passed. */ function acceptDefaultAdminTransfer() external; /** * @dev Initiates a {defaultAdminDelay} update by setting a {pendingDefaultAdminDelay} scheduled for getting * into effect after the current timestamp plus a {defaultAdminDelay}. * * This function guarantees that any call to {beginDefaultAdminTransfer} done between the timestamp this * method is called and the {pendingDefaultAdminDelay} effect schedule will use the current {defaultAdminDelay} * set before calling. * * The {pendingDefaultAdminDelay}'s effect schedule is defined in a way that waiting until the schedule and then * calling {beginDefaultAdminTransfer} with the new delay will take at least the same as another {defaultAdmin} * complete transfer (including acceptance). * * The schedule is designed for two scenarios: * * - When the delay is changed for a larger one the schedule is `block.timestamp + newDelay` capped by * {defaultAdminDelayIncreaseWait}. * - When the delay is changed for a shorter one, the schedule is `block.timestamp + (current delay - new delay)`. * * A {pendingDefaultAdminDelay} that never got into effect will be canceled in favor of a new scheduled change. * * Requirements: * * - Only can be called by the current {defaultAdmin}. * * Emits a DefaultAdminDelayChangeScheduled event and may emit a DefaultAdminDelayChangeCanceled event. */ function changeDefaultAdminDelay(uint48 newDelay) external; /** * @dev Cancels a scheduled {defaultAdminDelay} change. * * Requirements: * * - Only can be called by the current {defaultAdmin}. * * May emit a DefaultAdminDelayChangeCanceled event. */ function rollbackDefaultAdminDelay() external; /** * @dev Maximum time in seconds for an increase to {defaultAdminDelay} (that is scheduled using {changeDefaultAdminDelay}) * to take effect. Default to 5 days. * * When the {defaultAdminDelay} is scheduled to be increased, it goes into effect after the new delay has passed with * the purpose of giving enough time for reverting any accidental change (i.e. using milliseconds instead of seconds) * that may lock the contract. However, to avoid excessive schedules, the wait is capped by this function and it can * be overrode for a custom {defaultAdminDelay} increase scheduling. * * IMPORTANT: Make sure to add a reasonable amount of time while overriding this value, otherwise, * there's a risk of setting a high new delay that goes into effect almost immediately without the * possibility of human intervention in the case of an input error (eg. set milliseconds instead of seconds). */ function defaultAdminDelayIncreaseWait() external view returns (uint48); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/IAccessControl.sol) pragma solidity ^0.8.20; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { /** * @dev The `account` is missing a role. */ error AccessControlUnauthorizedAccount(address account, bytes32 neededRole); /** * @dev The caller of a function is not the expected one. * * NOTE: Don't confuse with {AccessControlUnauthorizedAccount}. */ error AccessControlBadConfirmation(); /** * @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. */ 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 `callerConfirmation`. */ function renounceRole(bytes32 role, address callerConfirmation) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC5313.sol) pragma solidity ^0.8.20; /** * @dev Interface for the Light Contract Ownership Standard. * * A standardized minimal interface required to identify an account that controls a contract */ interface IERC5313 { /** * @dev Gets the address of the owner. */ function owner() external view returns (address); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. * * ==== Security Considerations * * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be * considered as an intention to spend the allowance in any specific way. The second is that because permits have * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be * generally recommended is: * * ```solidity * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public { * try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {} * doThing(..., value); * } * * function doThing(..., uint256 value) public { * token.safeTransferFrom(msg.sender, address(this), value); * ... * } * ``` * * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also * {SafeERC20-safeTransferFrom}). * * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so * contracts should have entry points that don't rely on permit. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. * * CAUTION: See Security Considerations above. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.20; /** * @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 value of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the value of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves a `value` amount of tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 value) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets a `value` amount of tokens as the allowance of `spender` over the * caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 value) external returns (bool); /** * @dev Moves a `value` amount of tokens from `from` to `to` using the * allowance mechanism. `value` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 value) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; import {IERC20Permit} from "../extensions/IERC20Permit.sol"; import {Address} from "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; /** * @dev An operation with an ERC20 token failed. */ error SafeERC20FailedOperation(address token); /** * @dev Indicates a failed `decreaseAllowance` request. */ error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease); /** * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value))); } /** * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful. */ function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value))); } /** * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 oldAllowance = token.allowance(address(this), spender); forceApprove(token, spender, oldAllowance + value); } /** * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no * value, non-reverting calls are assumed to be successful. */ function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal { unchecked { uint256 currentAllowance = token.allowance(address(this), spender); if (currentAllowance < requestedDecrease) { revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease); } forceApprove(token, spender, currentAllowance - requestedDecrease); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval * to be set to zero before setting it to a non-zero value, such as USDT. */ function forceApprove(IERC20 token, address spender, uint256 value) internal { bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value)); if (!_callOptionalReturnBool(token, approvalCall)) { _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0))); _callOptionalReturn(token, approvalCall); } } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data); if (returndata.length != 0 && !abi.decode(returndata, (bool))) { revert SafeERC20FailedOperation(address(token)); } } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). * * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead. */ function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false // and not revert is the subcall reverts. (bool success, bytes memory returndata) = address(token).call(data); return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol) pragma solidity ^0.8.20; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev The ETH balance of the account is not enough to perform the operation. */ error AddressInsufficientBalance(address account); /** * @dev There's no code at `target` (it is not a contract). */ error AddressEmptyCode(address target); /** * @dev A call to an address target failed. The target may have reverted. */ error FailedInnerCall(); /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { if (address(this).balance < amount) { revert AddressInsufficientBalance(address(this)); } (bool success, ) = recipient.call{value: amount}(""); if (!success) { revert FailedInnerCall(); } } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason or custom error, it is bubbled * up by this function (like regular Solidity function calls). However, if * the call reverted with no returned reason, this function reverts with a * {FailedInnerCall} error. * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { if (address(this).balance < value) { revert AddressInsufficientBalance(address(this)); } (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an * unsuccessful call. */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata ) internal view returns (bytes memory) { if (!success) { _revert(returndata); } else { // only check if target is a contract if the call was successful and the return data is empty // otherwise we already know that it was a contract if (returndata.length == 0 && target.code.length == 0) { revert AddressEmptyCode(target); } return returndata; } } /** * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the * revert reason or with a default {FailedInnerCall} error. */ function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) { if (!success) { _revert(returndata); } else { return returndata; } } /** * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}. */ function _revert(bytes memory returndata) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert FailedInnerCall(); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.20; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS } /** * @dev The signature derives the `address(0)`. */ error ECDSAInvalidSignature(); /** * @dev The signature has an invalid length. */ error ECDSAInvalidSignatureLength(uint256 length); /** * @dev The signature has an S value that is in the upper half order. */ error ECDSAInvalidSignatureS(bytes32 s); /** * @dev Returns the address that signed a hashed message (`hash`) with `signature` or an error. This will not * return address(0) without also returning an error description. Errors are documented using an enum (error type) * and a bytes32 providing additional information about the error. * * If no error is returned, then the address can be used for verification purposes. * * The `ecrecover` EVM precompile allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError, bytes32) { if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else { return (address(0), RecoverError.InvalidSignatureLength, bytes32(signature.length)); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM precompile allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, signature); _throwError(error, errorArg); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] */ function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError, bytes32) { unchecked { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); // We do not check for an overflow here since the shift operation results in 0 or 1. uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. */ function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) { (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, r, vs); _throwError(error, errorArg); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError, bytes32) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS, s); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature, bytes32(0)); } return (signer, RecoverError.NoError, bytes32(0)); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) { (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, v, r, s); _throwError(error, errorArg); return recovered; } /** * @dev Optionally reverts with the corresponding custom error according to the `error` argument provided. */ function _throwError(RecoverError error, bytes32 errorArg) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert ECDSAInvalidSignature(); } else if (error == RecoverError.InvalidSignatureLength) { revert ECDSAInvalidSignatureLength(uint256(errorArg)); } else if (error == RecoverError.InvalidSignatureS) { revert ECDSAInvalidSignatureS(errorArg); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/ERC165Checker.sol) pragma solidity ^0.8.20; import {IERC165} from "./IERC165.sol"; /** * @dev Library used to query support of an interface declared via {IERC165}. * * Note that these functions return the actual result of the query: they do not * `revert` if an interface is not supported. It is up to the caller to decide * what to do in these cases. */ library ERC165Checker { // As per the EIP-165 spec, no interface should ever match 0xffffffff bytes4 private constant INTERFACE_ID_INVALID = 0xffffffff; /** * @dev Returns true if `account` supports the {IERC165} interface. */ function supportsERC165(address account) internal view returns (bool) { // Any contract that implements ERC165 must explicitly indicate support of // InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid return supportsERC165InterfaceUnchecked(account, type(IERC165).interfaceId) && !supportsERC165InterfaceUnchecked(account, INTERFACE_ID_INVALID); } /** * @dev Returns true if `account` supports the interface defined by * `interfaceId`. Support for {IERC165} itself is queried automatically. * * See {IERC165-supportsInterface}. */ function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) { // query support of both ERC165 as per the spec and support of _interfaceId return supportsERC165(account) && supportsERC165InterfaceUnchecked(account, interfaceId); } /** * @dev Returns a boolean array where each value corresponds to the * interfaces passed in and whether they're supported or not. This allows * you to batch check interfaces for a contract where your expectation * is that some interfaces may not be supported. * * See {IERC165-supportsInterface}. */ function getSupportedInterfaces( address account, bytes4[] memory interfaceIds ) internal view returns (bool[] memory) { // an array of booleans corresponding to interfaceIds and whether they're supported or not bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length); // query support of ERC165 itself if (supportsERC165(account)) { // query support of each interface in interfaceIds for (uint256 i = 0; i < interfaceIds.length; i++) { interfaceIdsSupported[i] = supportsERC165InterfaceUnchecked(account, interfaceIds[i]); } } return interfaceIdsSupported; } /** * @dev Returns true if `account` supports all the interfaces defined in * `interfaceIds`. Support for {IERC165} itself is queried automatically. * * Batch-querying can lead to gas savings by skipping repeated checks for * {IERC165} support. * * See {IERC165-supportsInterface}. */ function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) { // query support of ERC165 itself if (!supportsERC165(account)) { return false; } // query support of each interface in interfaceIds for (uint256 i = 0; i < interfaceIds.length; i++) { if (!supportsERC165InterfaceUnchecked(account, interfaceIds[i])) { return false; } } // all interfaces supported return true; } /** * @notice Query if a contract implements an interface, does not check ERC165 support * @param account The address of the contract to query for support of an interface * @param interfaceId The interface identifier, as specified in ERC-165 * @return true if the contract at account indicates support of the interface with * identifier interfaceId, false otherwise * @dev Assumes that account contains a contract that supports ERC165, otherwise * the behavior of this method is undefined. This precondition can be checked * with {supportsERC165}. * * Some precompiled contracts will falsely indicate support for a given interface, so caution * should be exercised when using this function. * * Interface identification is specified in ERC-165. */ function supportsERC165InterfaceUnchecked(address account, bytes4 interfaceId) internal view returns (bool) { // prepare call bytes memory encodedParams = abi.encodeCall(IERC165.supportsInterface, (interfaceId)); // perform static call bool success; uint256 returnSize; uint256 returnValue; assembly { success := staticcall(30000, account, add(encodedParams, 0x20), mload(encodedParams), 0x00, 0x20) returnSize := returndatasize() returnValue := mload(0x00) } return success && returnSize >= 0x20 && returnValue > 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol) pragma solidity ^0.8.20; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @dev Muldiv operation overflow. */ error MathOverflowedMulDiv(); enum Rounding { Floor, // Toward negative infinity Ceil, // Toward positive infinity Trunc, // Toward zero Expand // Away from zero } /** * @dev Returns the addition of two unsigned integers, with an overflow flag. */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the subtraction of two unsigned integers, with an overflow flag. */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds towards infinity instead * of rounding towards zero. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { if (b == 0) { // Guarantee the same behavior as in a regular Solidity division. return a / b; } // (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 = x * y; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { // Solidity will revert if denominator == 0, unlike the div opcode on its own. // The surrounding unchecked block does not change this fact. // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic. return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. if (denominator <= prod1) { revert MathOverflowedMulDiv(); } /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. // Always >= 1. See https://cs.stackexchange.com/q/138556/92363. uint256 twos = denominator & (0 - denominator); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 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 (unsignedRoundsUp(rounding) && 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 * towards zero. * * 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 + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; 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 + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10 ** 64) { value /= 10 ** 64; result += 64; } if (value >= 10 ** 32) { value /= 10 ** 32; result += 32; } if (value >= 10 ** 16) { value /= 10 ** 16; result += 16; } if (value >= 10 ** 8) { value /= 10 ** 8; result += 8; } if (value >= 10 ** 4) { value /= 10 ** 4; result += 4; } if (value >= 10 ** 2) { value /= 10 ** 2; result += 2; } if (value >= 10 ** 1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0); } } /** * @dev Return the log in base 256 of a positive value rounded towards zero. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; 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 + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0); } } /** * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers. */ function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) { return uint8(rounding) % 2 == 1; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SafeCast.sol) // This file was procedurally generated from scripts/generate/templates/SafeCast.js. pragma solidity ^0.8.20; /** * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow * checks. * * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can * easily result in undesired exploitation or bugs, since developers usually * assume that overflows raise errors. `SafeCast` restores this intuition by * reverting the transaction when such an operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeCast { /** * @dev Value doesn't fit in an uint of `bits` size. */ error SafeCastOverflowedUintDowncast(uint8 bits, uint256 value); /** * @dev An int value doesn't fit in an uint of `bits` size. */ error SafeCastOverflowedIntToUint(int256 value); /** * @dev Value doesn't fit in an int of `bits` size. */ error SafeCastOverflowedIntDowncast(uint8 bits, int256 value); /** * @dev An uint value doesn't fit in an int of `bits` size. */ error SafeCastOverflowedUintToInt(uint256 value); /** * @dev Returns the downcasted uint248 from uint256, reverting on * overflow (when the input is greater than largest uint248). * * Counterpart to Solidity's `uint248` operator. * * Requirements: * * - input must fit into 248 bits */ function toUint248(uint256 value) internal pure returns (uint248) { if (value > type(uint248).max) { revert SafeCastOverflowedUintDowncast(248, value); } return uint248(value); } /** * @dev Returns the downcasted uint240 from uint256, reverting on * overflow (when the input is greater than largest uint240). * * Counterpart to Solidity's `uint240` operator. * * Requirements: * * - input must fit into 240 bits */ function toUint240(uint256 value) internal pure returns (uint240) { if (value > type(uint240).max) { revert SafeCastOverflowedUintDowncast(240, value); } return uint240(value); } /** * @dev Returns the downcasted uint232 from uint256, reverting on * overflow (when the input is greater than largest uint232). * * Counterpart to Solidity's `uint232` operator. * * Requirements: * * - input must fit into 232 bits */ function toUint232(uint256 value) internal pure returns (uint232) { if (value > type(uint232).max) { revert SafeCastOverflowedUintDowncast(232, value); } return uint232(value); } /** * @dev Returns the downcasted uint224 from uint256, reverting on * overflow (when the input is greater than largest uint224). * * Counterpart to Solidity's `uint224` operator. * * Requirements: * * - input must fit into 224 bits */ function toUint224(uint256 value) internal pure returns (uint224) { if (value > type(uint224).max) { revert SafeCastOverflowedUintDowncast(224, value); } return uint224(value); } /** * @dev Returns the downcasted uint216 from uint256, reverting on * overflow (when the input is greater than largest uint216). * * Counterpart to Solidity's `uint216` operator. * * Requirements: * * - input must fit into 216 bits */ function toUint216(uint256 value) internal pure returns (uint216) { if (value > type(uint216).max) { revert SafeCastOverflowedUintDowncast(216, value); } return uint216(value); } /** * @dev Returns the downcasted uint208 from uint256, reverting on * overflow (when the input is greater than largest uint208). * * Counterpart to Solidity's `uint208` operator. * * Requirements: * * - input must fit into 208 bits */ function toUint208(uint256 value) internal pure returns (uint208) { if (value > type(uint208).max) { revert SafeCastOverflowedUintDowncast(208, value); } return uint208(value); } /** * @dev Returns the downcasted uint200 from uint256, reverting on * overflow (when the input is greater than largest uint200). * * Counterpart to Solidity's `uint200` operator. * * Requirements: * * - input must fit into 200 bits */ function toUint200(uint256 value) internal pure returns (uint200) { if (value > type(uint200).max) { revert SafeCastOverflowedUintDowncast(200, value); } return uint200(value); } /** * @dev Returns the downcasted uint192 from uint256, reverting on * overflow (when the input is greater than largest uint192). * * Counterpart to Solidity's `uint192` operator. * * Requirements: * * - input must fit into 192 bits */ function toUint192(uint256 value) internal pure returns (uint192) { if (value > type(uint192).max) { revert SafeCastOverflowedUintDowncast(192, value); } return uint192(value); } /** * @dev Returns the downcasted uint184 from uint256, reverting on * overflow (when the input is greater than largest uint184). * * Counterpart to Solidity's `uint184` operator. * * Requirements: * * - input must fit into 184 bits */ function toUint184(uint256 value) internal pure returns (uint184) { if (value > type(uint184).max) { revert SafeCastOverflowedUintDowncast(184, value); } return uint184(value); } /** * @dev Returns the downcasted uint176 from uint256, reverting on * overflow (when the input is greater than largest uint176). * * Counterpart to Solidity's `uint176` operator. * * Requirements: * * - input must fit into 176 bits */ function toUint176(uint256 value) internal pure returns (uint176) { if (value > type(uint176).max) { revert SafeCastOverflowedUintDowncast(176, value); } return uint176(value); } /** * @dev Returns the downcasted uint168 from uint256, reverting on * overflow (when the input is greater than largest uint168). * * Counterpart to Solidity's `uint168` operator. * * Requirements: * * - input must fit into 168 bits */ function toUint168(uint256 value) internal pure returns (uint168) { if (value > type(uint168).max) { revert SafeCastOverflowedUintDowncast(168, value); } return uint168(value); } /** * @dev Returns the downcasted uint160 from uint256, reverting on * overflow (when the input is greater than largest uint160). * * Counterpart to Solidity's `uint160` operator. * * Requirements: * * - input must fit into 160 bits */ function toUint160(uint256 value) internal pure returns (uint160) { if (value > type(uint160).max) { revert SafeCastOverflowedUintDowncast(160, value); } return uint160(value); } /** * @dev Returns the downcasted uint152 from uint256, reverting on * overflow (when the input is greater than largest uint152). * * Counterpart to Solidity's `uint152` operator. * * Requirements: * * - input must fit into 152 bits */ function toUint152(uint256 value) internal pure returns (uint152) { if (value > type(uint152).max) { revert SafeCastOverflowedUintDowncast(152, value); } return uint152(value); } /** * @dev Returns the downcasted uint144 from uint256, reverting on * overflow (when the input is greater than largest uint144). * * Counterpart to Solidity's `uint144` operator. * * Requirements: * * - input must fit into 144 bits */ function toUint144(uint256 value) internal pure returns (uint144) { if (value > type(uint144).max) { revert SafeCastOverflowedUintDowncast(144, value); } return uint144(value); } /** * @dev Returns the downcasted uint136 from uint256, reverting on * overflow (when the input is greater than largest uint136). * * Counterpart to Solidity's `uint136` operator. * * Requirements: * * - input must fit into 136 bits */ function toUint136(uint256 value) internal pure returns (uint136) { if (value > type(uint136).max) { revert SafeCastOverflowedUintDowncast(136, value); } return uint136(value); } /** * @dev Returns the downcasted uint128 from uint256, reverting on * overflow (when the input is greater than largest uint128). * * Counterpart to Solidity's `uint128` operator. * * Requirements: * * - input must fit into 128 bits */ function toUint128(uint256 value) internal pure returns (uint128) { if (value > type(uint128).max) { revert SafeCastOverflowedUintDowncast(128, value); } return uint128(value); } /** * @dev Returns the downcasted uint120 from uint256, reverting on * overflow (when the input is greater than largest uint120). * * Counterpart to Solidity's `uint120` operator. * * Requirements: * * - input must fit into 120 bits */ function toUint120(uint256 value) internal pure returns (uint120) { if (value > type(uint120).max) { revert SafeCastOverflowedUintDowncast(120, value); } return uint120(value); } /** * @dev Returns the downcasted uint112 from uint256, reverting on * overflow (when the input is greater than largest uint112). * * Counterpart to Solidity's `uint112` operator. * * Requirements: * * - input must fit into 112 bits */ function toUint112(uint256 value) internal pure returns (uint112) { if (value > type(uint112).max) { revert SafeCastOverflowedUintDowncast(112, value); } return uint112(value); } /** * @dev Returns the downcasted uint104 from uint256, reverting on * overflow (when the input is greater than largest uint104). * * Counterpart to Solidity's `uint104` operator. * * Requirements: * * - input must fit into 104 bits */ function toUint104(uint256 value) internal pure returns (uint104) { if (value > type(uint104).max) { revert SafeCastOverflowedUintDowncast(104, value); } return uint104(value); } /** * @dev Returns the downcasted uint96 from uint256, reverting on * overflow (when the input is greater than largest uint96). * * Counterpart to Solidity's `uint96` operator. * * Requirements: * * - input must fit into 96 bits */ function toUint96(uint256 value) internal pure returns (uint96) { if (value > type(uint96).max) { revert SafeCastOverflowedUintDowncast(96, value); } return uint96(value); } /** * @dev Returns the downcasted uint88 from uint256, reverting on * overflow (when the input is greater than largest uint88). * * Counterpart to Solidity's `uint88` operator. * * Requirements: * * - input must fit into 88 bits */ function toUint88(uint256 value) internal pure returns (uint88) { if (value > type(uint88).max) { revert SafeCastOverflowedUintDowncast(88, value); } return uint88(value); } /** * @dev Returns the downcasted uint80 from uint256, reverting on * overflow (when the input is greater than largest uint80). * * Counterpart to Solidity's `uint80` operator. * * Requirements: * * - input must fit into 80 bits */ function toUint80(uint256 value) internal pure returns (uint80) { if (value > type(uint80).max) { revert SafeCastOverflowedUintDowncast(80, value); } return uint80(value); } /** * @dev Returns the downcasted uint72 from uint256, reverting on * overflow (when the input is greater than largest uint72). * * Counterpart to Solidity's `uint72` operator. * * Requirements: * * - input must fit into 72 bits */ function toUint72(uint256 value) internal pure returns (uint72) { if (value > type(uint72).max) { revert SafeCastOverflowedUintDowncast(72, value); } return uint72(value); } /** * @dev Returns the downcasted uint64 from uint256, reverting on * overflow (when the input is greater than largest uint64). * * Counterpart to Solidity's `uint64` operator. * * Requirements: * * - input must fit into 64 bits */ function toUint64(uint256 value) internal pure returns (uint64) { if (value > type(uint64).max) { revert SafeCastOverflowedUintDowncast(64, value); } return uint64(value); } /** * @dev Returns the downcasted uint56 from uint256, reverting on * overflow (when the input is greater than largest uint56). * * Counterpart to Solidity's `uint56` operator. * * Requirements: * * - input must fit into 56 bits */ function toUint56(uint256 value) internal pure returns (uint56) { if (value > type(uint56).max) { revert SafeCastOverflowedUintDowncast(56, value); } return uint56(value); } /** * @dev Returns the downcasted uint48 from uint256, reverting on * overflow (when the input is greater than largest uint48). * * Counterpart to Solidity's `uint48` operator. * * Requirements: * * - input must fit into 48 bits */ function toUint48(uint256 value) internal pure returns (uint48) { if (value > type(uint48).max) { revert SafeCastOverflowedUintDowncast(48, value); } return uint48(value); } /** * @dev Returns the downcasted uint40 from uint256, reverting on * overflow (when the input is greater than largest uint40). * * Counterpart to Solidity's `uint40` operator. * * Requirements: * * - input must fit into 40 bits */ function toUint40(uint256 value) internal pure returns (uint40) { if (value > type(uint40).max) { revert SafeCastOverflowedUintDowncast(40, value); } return uint40(value); } /** * @dev Returns the downcasted uint32 from uint256, reverting on * overflow (when the input is greater than largest uint32). * * Counterpart to Solidity's `uint32` operator. * * Requirements: * * - input must fit into 32 bits */ function toUint32(uint256 value) internal pure returns (uint32) { if (value > type(uint32).max) { revert SafeCastOverflowedUintDowncast(32, value); } return uint32(value); } /** * @dev Returns the downcasted uint24 from uint256, reverting on * overflow (when the input is greater than largest uint24). * * Counterpart to Solidity's `uint24` operator. * * Requirements: * * - input must fit into 24 bits */ function toUint24(uint256 value) internal pure returns (uint24) { if (value > type(uint24).max) { revert SafeCastOverflowedUintDowncast(24, value); } return uint24(value); } /** * @dev Returns the downcasted uint16 from uint256, reverting on * overflow (when the input is greater than largest uint16). * * Counterpart to Solidity's `uint16` operator. * * Requirements: * * - input must fit into 16 bits */ function toUint16(uint256 value) internal pure returns (uint16) { if (value > type(uint16).max) { revert SafeCastOverflowedUintDowncast(16, value); } return uint16(value); } /** * @dev Returns the downcasted uint8 from uint256, reverting on * overflow (when the input is greater than largest uint8). * * Counterpart to Solidity's `uint8` operator. * * Requirements: * * - input must fit into 8 bits */ function toUint8(uint256 value) internal pure returns (uint8) { if (value > type(uint8).max) { revert SafeCastOverflowedUintDowncast(8, value); } return uint8(value); } /** * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. */ function toUint256(int256 value) internal pure returns (uint256) { if (value < 0) { revert SafeCastOverflowedIntToUint(value); } return uint256(value); } /** * @dev Returns the downcasted int248 from int256, reverting on * overflow (when the input is less than smallest int248 or * greater than largest int248). * * Counterpart to Solidity's `int248` operator. * * Requirements: * * - input must fit into 248 bits */ function toInt248(int256 value) internal pure returns (int248 downcasted) { downcasted = int248(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(248, value); } } /** * @dev Returns the downcasted int240 from int256, reverting on * overflow (when the input is less than smallest int240 or * greater than largest int240). * * Counterpart to Solidity's `int240` operator. * * Requirements: * * - input must fit into 240 bits */ function toInt240(int256 value) internal pure returns (int240 downcasted) { downcasted = int240(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(240, value); } } /** * @dev Returns the downcasted int232 from int256, reverting on * overflow (when the input is less than smallest int232 or * greater than largest int232). * * Counterpart to Solidity's `int232` operator. * * Requirements: * * - input must fit into 232 bits */ function toInt232(int256 value) internal pure returns (int232 downcasted) { downcasted = int232(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(232, value); } } /** * @dev Returns the downcasted int224 from int256, reverting on * overflow (when the input is less than smallest int224 or * greater than largest int224). * * Counterpart to Solidity's `int224` operator. * * Requirements: * * - input must fit into 224 bits */ function toInt224(int256 value) internal pure returns (int224 downcasted) { downcasted = int224(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(224, value); } } /** * @dev Returns the downcasted int216 from int256, reverting on * overflow (when the input is less than smallest int216 or * greater than largest int216). * * Counterpart to Solidity's `int216` operator. * * Requirements: * * - input must fit into 216 bits */ function toInt216(int256 value) internal pure returns (int216 downcasted) { downcasted = int216(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(216, value); } } /** * @dev Returns the downcasted int208 from int256, reverting on * overflow (when the input is less than smallest int208 or * greater than largest int208). * * Counterpart to Solidity's `int208` operator. * * Requirements: * * - input must fit into 208 bits */ function toInt208(int256 value) internal pure returns (int208 downcasted) { downcasted = int208(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(208, value); } } /** * @dev Returns the downcasted int200 from int256, reverting on * overflow (when the input is less than smallest int200 or * greater than largest int200). * * Counterpart to Solidity's `int200` operator. * * Requirements: * * - input must fit into 200 bits */ function toInt200(int256 value) internal pure returns (int200 downcasted) { downcasted = int200(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(200, value); } } /** * @dev Returns the downcasted int192 from int256, reverting on * overflow (when the input is less than smallest int192 or * greater than largest int192). * * Counterpart to Solidity's `int192` operator. * * Requirements: * * - input must fit into 192 bits */ function toInt192(int256 value) internal pure returns (int192 downcasted) { downcasted = int192(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(192, value); } } /** * @dev Returns the downcasted int184 from int256, reverting on * overflow (when the input is less than smallest int184 or * greater than largest int184). * * Counterpart to Solidity's `int184` operator. * * Requirements: * * - input must fit into 184 bits */ function toInt184(int256 value) internal pure returns (int184 downcasted) { downcasted = int184(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(184, value); } } /** * @dev Returns the downcasted int176 from int256, reverting on * overflow (when the input is less than smallest int176 or * greater than largest int176). * * Counterpart to Solidity's `int176` operator. * * Requirements: * * - input must fit into 176 bits */ function toInt176(int256 value) internal pure returns (int176 downcasted) { downcasted = int176(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(176, value); } } /** * @dev Returns the downcasted int168 from int256, reverting on * overflow (when the input is less than smallest int168 or * greater than largest int168). * * Counterpart to Solidity's `int168` operator. * * Requirements: * * - input must fit into 168 bits */ function toInt168(int256 value) internal pure returns (int168 downcasted) { downcasted = int168(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(168, value); } } /** * @dev Returns the downcasted int160 from int256, reverting on * overflow (when the input is less than smallest int160 or * greater than largest int160). * * Counterpart to Solidity's `int160` operator. * * Requirements: * * - input must fit into 160 bits */ function toInt160(int256 value) internal pure returns (int160 downcasted) { downcasted = int160(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(160, value); } } /** * @dev Returns the downcasted int152 from int256, reverting on * overflow (when the input is less than smallest int152 or * greater than largest int152). * * Counterpart to Solidity's `int152` operator. * * Requirements: * * - input must fit into 152 bits */ function toInt152(int256 value) internal pure returns (int152 downcasted) { downcasted = int152(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(152, value); } } /** * @dev Returns the downcasted int144 from int256, reverting on * overflow (when the input is less than smallest int144 or * greater than largest int144). * * Counterpart to Solidity's `int144` operator. * * Requirements: * * - input must fit into 144 bits */ function toInt144(int256 value) internal pure returns (int144 downcasted) { downcasted = int144(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(144, value); } } /** * @dev Returns the downcasted int136 from int256, reverting on * overflow (when the input is less than smallest int136 or * greater than largest int136). * * Counterpart to Solidity's `int136` operator. * * Requirements: * * - input must fit into 136 bits */ function toInt136(int256 value) internal pure returns (int136 downcasted) { downcasted = int136(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(136, value); } } /** * @dev Returns the downcasted int128 from int256, reverting on * overflow (when the input is less than smallest int128 or * greater than largest int128). * * Counterpart to Solidity's `int128` operator. * * Requirements: * * - input must fit into 128 bits */ function toInt128(int256 value) internal pure returns (int128 downcasted) { downcasted = int128(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(128, value); } } /** * @dev Returns the downcasted int120 from int256, reverting on * overflow (when the input is less than smallest int120 or * greater than largest int120). * * Counterpart to Solidity's `int120` operator. * * Requirements: * * - input must fit into 120 bits */ function toInt120(int256 value) internal pure returns (int120 downcasted) { downcasted = int120(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(120, value); } } /** * @dev Returns the downcasted int112 from int256, reverting on * overflow (when the input is less than smallest int112 or * greater than largest int112). * * Counterpart to Solidity's `int112` operator. * * Requirements: * * - input must fit into 112 bits */ function toInt112(int256 value) internal pure returns (int112 downcasted) { downcasted = int112(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(112, value); } } /** * @dev Returns the downcasted int104 from int256, reverting on * overflow (when the input is less than smallest int104 or * greater than largest int104). * * Counterpart to Solidity's `int104` operator. * * Requirements: * * - input must fit into 104 bits */ function toInt104(int256 value) internal pure returns (int104 downcasted) { downcasted = int104(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(104, value); } } /** * @dev Returns the downcasted int96 from int256, reverting on * overflow (when the input is less than smallest int96 or * greater than largest int96). * * Counterpart to Solidity's `int96` operator. * * Requirements: * * - input must fit into 96 bits */ function toInt96(int256 value) internal pure returns (int96 downcasted) { downcasted = int96(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(96, value); } } /** * @dev Returns the downcasted int88 from int256, reverting on * overflow (when the input is less than smallest int88 or * greater than largest int88). * * Counterpart to Solidity's `int88` operator. * * Requirements: * * - input must fit into 88 bits */ function toInt88(int256 value) internal pure returns (int88 downcasted) { downcasted = int88(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(88, value); } } /** * @dev Returns the downcasted int80 from int256, reverting on * overflow (when the input is less than smallest int80 or * greater than largest int80). * * Counterpart to Solidity's `int80` operator. * * Requirements: * * - input must fit into 80 bits */ function toInt80(int256 value) internal pure returns (int80 downcasted) { downcasted = int80(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(80, value); } } /** * @dev Returns the downcasted int72 from int256, reverting on * overflow (when the input is less than smallest int72 or * greater than largest int72). * * Counterpart to Solidity's `int72` operator. * * Requirements: * * - input must fit into 72 bits */ function toInt72(int256 value) internal pure returns (int72 downcasted) { downcasted = int72(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(72, value); } } /** * @dev Returns the downcasted int64 from int256, reverting on * overflow (when the input is less than smallest int64 or * greater than largest int64). * * Counterpart to Solidity's `int64` operator. * * Requirements: * * - input must fit into 64 bits */ function toInt64(int256 value) internal pure returns (int64 downcasted) { downcasted = int64(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(64, value); } } /** * @dev Returns the downcasted int56 from int256, reverting on * overflow (when the input is less than smallest int56 or * greater than largest int56). * * Counterpart to Solidity's `int56` operator. * * Requirements: * * - input must fit into 56 bits */ function toInt56(int256 value) internal pure returns (int56 downcasted) { downcasted = int56(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(56, value); } } /** * @dev Returns the downcasted int48 from int256, reverting on * overflow (when the input is less than smallest int48 or * greater than largest int48). * * Counterpart to Solidity's `int48` operator. * * Requirements: * * - input must fit into 48 bits */ function toInt48(int256 value) internal pure returns (int48 downcasted) { downcasted = int48(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(48, value); } } /** * @dev Returns the downcasted int40 from int256, reverting on * overflow (when the input is less than smallest int40 or * greater than largest int40). * * Counterpart to Solidity's `int40` operator. * * Requirements: * * - input must fit into 40 bits */ function toInt40(int256 value) internal pure returns (int40 downcasted) { downcasted = int40(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(40, value); } } /** * @dev Returns the downcasted int32 from int256, reverting on * overflow (when the input is less than smallest int32 or * greater than largest int32). * * Counterpart to Solidity's `int32` operator. * * Requirements: * * - input must fit into 32 bits */ function toInt32(int256 value) internal pure returns (int32 downcasted) { downcasted = int32(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(32, value); } } /** * @dev Returns the downcasted int24 from int256, reverting on * overflow (when the input is less than smallest int24 or * greater than largest int24). * * Counterpart to Solidity's `int24` operator. * * Requirements: * * - input must fit into 24 bits */ function toInt24(int256 value) internal pure returns (int24 downcasted) { downcasted = int24(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(24, value); } } /** * @dev Returns the downcasted int16 from int256, reverting on * overflow (when the input is less than smallest int16 or * greater than largest int16). * * Counterpart to Solidity's `int16` operator. * * Requirements: * * - input must fit into 16 bits */ function toInt16(int256 value) internal pure returns (int16 downcasted) { downcasted = int16(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(16, value); } } /** * @dev Returns the downcasted int8 from int256, reverting on * overflow (when the input is less than smallest int8 or * greater than largest int8). * * Counterpart to Solidity's `int8` operator. * * Requirements: * * - input must fit into 8 bits */ function toInt8(int256 value) internal pure returns (int8 downcasted) { downcasted = int8(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(8, value); } } /** * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. */ function toInt256(uint256 value) internal pure returns (int256) { // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive if (value > uint256(type(int256).max)) { revert SafeCastOverflowedUintToInt(value); } return int256(value); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; import {ECDSA} from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; interface INotaryConsortium { /// @dev Error thrown when signature payload is already used error PayloadAlreadyUsed(); /// @dev Error thrown when signatures length is not equal to signers length error LengthMismatch(); /// @dev Error thrown when there are not enough signatures error NotEnoughSignatures(); /// @dev Error thrown when unexpected action is used error UnexpectedAction(bytes4 action); /// @dev Event emitted when the validator set is updated event ValidatorSetUpdated( uint256 indexed epoch, address[] validators, uint256[] weights, uint256 threshold ); /// @dev Error thrown when validator set already set error ValSetAlreadySet(); /// @dev Error thrown when no validator set is set error NoValidatorSet(); /// @dev Error thrown when invalid epoch is provided error InvalidEpoch(); function checkProof( bytes32 _payloadHash, bytes calldata _proof ) external view; }
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol"; import {GMPUtils} from "./libs/GMPUtils.sol"; import {MessagePath} from "./libs/MessagePath.sol"; interface IHandler is IERC165 { /// /// @return Could return some result, that will be emitted in `MessageHandled` event function handlePayload( GMPUtils.Payload memory ) external returns (bytes memory); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; interface IMailbox { error Mailbox_ZeroChainId(); error Mailbox_ZeroConsortium(); error Mailbox_ZeroMailbox(); error Mailbox_ZeroRecipient(); error Mailbox_ZeroAmount(); error Mailbox_MessagePathEnabled(bytes32 id); error Mailbox_MessagePathDisabled(bytes32 id); error Mailbox_UnexpectedDestinationCaller(address expected, address actual); error Mailbox_HandlerNotImplemented(); error Mailbox_PayloadOversize(uint32 max, uint256 actual); error Mailbox_NotEnoughFee(uint256 expected, uint256 actual); error Mailbox_CallFailed(); event MessagePathEnabled( bytes32 indexed destinationChain, bytes32 indexed inboundMessagePath, bytes32 indexed outboundMessagePath, bytes32 destinationMailbox ); event MessagePathDisabled( bytes32 indexed destinationChain, bytes32 indexed inboundMessagePath, bytes32 indexed outboundMessagePath, bytes32 destinationMailbox ); event MessageSent( bytes32 indexed destinationLChainId, address indexed msgSender, bytes32 indexed recipient, bytes payload ); /// Message payment receipt event MessagePaid( bytes32 indexed payloadHash, address indexed msgSender, uint256 payloadSize, uint256 value ); event MessageDelivered( bytes32 indexed payloadHash, address indexed caller, uint256 indexed nonce, bytes32 msgSender, bytes payload ); event MessageHandled( bytes32 indexed payloadHash, address indexed destinationCaller, bytes executionResult ); event MessageHandleError( bytes32 indexed payloadHash, address indexed destinationCaller, string reason, bytes customError ); event SenderConfigUpdated( address indexed sender, uint64 maxPayloadSize, bool feeDisabled ); event DefaultPayloadSizeSet(uint64 maxPayloadSize); event FeePerByteSet(uint256 fee); event FeeWithdrawn(address indexed treasury, uint256 amount); function getFee( address sender, bytes calldata body ) external view returns (uint256); function getInboundMessagePath( bytes32 pathId ) external view returns (bytes32); function send( bytes32 destinationChain, bytes32 recipient, bytes32 destinationCaller, bytes calldata body ) external payable returns (uint256, bytes32); function deliverAndHandle( bytes calldata rawPayload, bytes calldata proof ) external returns (bytes32, bool, bytes memory); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; import {LChainId} from "../../libs/LChainId.sol"; library GMPUtils { // bytes4(keccak256("MessageV1(bytes32,uint256,bytes32,bytes32,bytes32,bytes)")) bytes4 public constant GMP_V1_SELECTOR = 0xe288fb4a; uint256 internal constant MIN_GMP_LENGTH = 32 * 6 + 4; // This length includes selector error GMP_ZeroChainId(); error GMP_ZeroSender(); error GMP_ZeroRecipient(); error GMP_WrongPayloadLength(); error GMP_InvalidAddess(); error GMP_InvalidAction(bytes4 expectedVal, bytes4 actualVal); struct Payload { bytes32 id; bytes32 msgPath; uint256 msgNonce; bytes32 msgSender; address msgRecipient; // it's okay to use address instead bytes32, because delivered to EVM address msgDestinationCaller; bytes msgBody; } function encodePayload( bytes32 msgPath, uint256 msgNonce, bytes32 msgSender, bytes32 msgRecipient, bytes32 msgDestinationCaller, bytes memory msgBody ) internal pure returns (bytes memory) { return abi.encodeWithSelector( GMP_V1_SELECTOR, msgPath, msgNonce, msgSender, msgRecipient, msgDestinationCaller, msgBody ); } function decodeAndValidatePayload( bytes calldata rawPayload ) internal pure returns (Payload memory payload) { validatePayload(rawPayload); ( payload.msgPath, payload.msgNonce, payload.msgSender, payload.msgRecipient, payload.msgDestinationCaller, payload.msgBody ) = abi.decode( rawPayload[4:], (bytes32, uint256, bytes32, address, address, bytes) ); // no need to verify msg path, because mailbox verifies it to be enabled if (payload.msgSender == bytes32(0)) { revert GMP_ZeroSender(); } if (payload.msgRecipient == address(0)) { revert GMP_ZeroRecipient(); } payload.id = hash(rawPayload); return payload; } // @notice Returns message's selector function selector(bytes memory payload) internal pure returns (bytes4) { return bytes4(payload); } function hash(bytes memory rawPayload) internal pure returns (bytes32) { return sha256(rawPayload); } /** * @notice converts address to bytes32 (alignment preserving cast.) * @param addr the address to convert to bytes32 */ function addressToBytes32(address addr) internal pure returns (bytes32) { return bytes32(uint256(uint160(addr))); } /** * @notice converts bytes32 to address (alignment preserving cast.) * @dev This function explicitly checks if the first 12 bytes are zeros to ensure 1 to 1 mapping * @param _buf the bytes32 to convert to address */ function bytes32ToAddress(bytes32 _buf) internal pure returns (address) { if (uint256(_buf) >> 160 != 0) { revert GMP_InvalidAddess(); } return address(uint160(uint256(_buf))); } function validatePayload(bytes calldata rawPayload) internal pure { if (bytes4(rawPayload) != GMP_V1_SELECTOR) { revert GMP_InvalidAction(GMP_V1_SELECTOR, bytes4(rawPayload)); } if (rawPayload.length < MIN_GMP_LENGTH) { revert GMP_WrongPayloadLength(); } } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; library MessagePath { struct Details { bytes32 sourceContract; bytes32 sourceChain; bytes32 destinationChain; } function id(Details memory self) internal pure returns (bytes32) { return keccak256( abi.encode( self.sourceContract, self.sourceChain, self.destinationChain ) ); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; library LChainId { function get() internal view returns (bytes32) { // Ensure first byte is zero by masking the highest byte return bytes32( block.chainid & 0x00FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF ); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; library RateLimits { /** * @notice Rate Limit struct. * @param amountInFlight The amount in the current window. * @param lastUpdated Timestamp representing the last time the rate limit was checked or updated. * @param limit This represents the maximum allowed amount within a given window. * @param window Defines the duration of the rate limiting window. */ struct Data { uint256 amountInFlight; uint256 lastUpdated; uint256 limit; uint256 window; } /** * @notice Rate Limit Configuration struct. * @param chainId The destination endpoint id. * @param limit This represents the maximum allowed amount within a given window. * @param window Defines the duration of the rate limiting window. */ struct Config { bytes32 chainId; uint256 limit; uint256 window; } /// @notice Error that is thrown when an amount exceeds the rate_limit. error RateLimitExceeded(); /// @notice Error that is thrown when a rate limit seems to be malformed. error MalformedRateLimit(); function setRateLimit(Data storage rl, Config memory config) internal { // @dev Ensure we checkpoint the existing rate limit as to not retroactively apply the new decay rate. updateLimit(rl, 0); // @dev Does NOT reset the amountInFlight/lastUpdated of an existing rate limit. rl.limit = config.limit; rl.window = config.window; } function availableAmountToSend( Data memory rl ) internal view returns (uint256 currentAmountInFlight, uint256 amountCanBeSent) { return availableAmountToSend( rl.amountInFlight, rl.lastUpdated, rl.limit, rl.window ); } /** * @notice Checks current amount in flight and amount that can be sent for a given rate limit window. * @param _amountInFlight The total amount that was in flight at the last update. * @param _lastUpdated Timestamp representing the last time the rate limit was checked or updated. * @param _limit The maximum allowable amount within the specified window * @param _window Defines the duration of the rate limiting window. * @return currentAmountInFlight The amount in the current window. * @return amountCanBeSent The amount that can be sent. */ function availableAmountToSend( uint256 _amountInFlight, uint256 _lastUpdated, uint256 _limit, uint256 _window ) internal view returns (uint256 currentAmountInFlight, uint256 amountCanBeSent) { uint256 timeSinceLastDeposit = block.timestamp - _lastUpdated; if (timeSinceLastDeposit >= _window) { currentAmountInFlight = 0; amountCanBeSent = _limit; } else { uint256 decay = (_limit * timeSinceLastDeposit) / _window; currentAmountInFlight = _amountInFlight <= decay ? 0 : _amountInFlight - decay; amountCanBeSent = _limit <= currentAmountInFlight ? 0 : _limit - currentAmountInFlight; } } /** * @notice Verifies whether the specified amount falls within the rate limit constraints. * On successful verification, it updates amountInFlight and lastUpdated. If the amount exceeds * the rate limit, the operation reverts. * @param rl The rate limits to update. * @param _amount The amount to check and apply for rate limit constraints. */ function updateLimit(Data storage rl, uint256 _amount) internal { ( uint256 currentAmountInFlight, uint256 amountCanBeSent ) = availableAmountToSend(rl); if (_amount > amountCanBeSent) revert RateLimitExceeded(); rl.amountInFlight = currentAmountInFlight + _amount; rl.lastUpdated = block.timestamp; } function checkRateLimitSanity(uint256 limit) internal pure { if (limit == 0) revert RateLimits.MalformedRateLimit(); } }
{ "optimizer": { "enabled": true, "runs": 200 }, "evmVersion": "paris", "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": {} }
Contract Security Audit
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Contract ABI
API[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AccessControlBadConfirmation","type":"error"},{"inputs":[{"internalType":"uint48","name":"schedule","type":"uint48"}],"name":"AccessControlEnforcedDefaultAdminDelay","type":"error"},{"inputs":[],"name":"AccessControlEnforcedDefaultAdminRules","type":"error"},{"inputs":[{"internalType":"address","name":"defaultAdmin","type":"address"}],"name":"AccessControlInvalidDefaultAdmin","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"bytes32","name":"neededRole","type":"bytes32"}],"name":"AccessControlUnauthorizedAccount","type":"error"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"AddressInsufficientBalance","type":"error"},{"inputs":[],"name":"EnforcedPause","type":"error"},{"inputs":[],"name":"ExpectedPause","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[{"internalType":"bytes4","name":"expectedVal","type":"bytes4"},{"internalType":"bytes4","name":"actualVal","type":"bytes4"}],"name":"GMP_InvalidAction","type":"error"},{"inputs":[],"name":"GMP_WrongPayloadLength","type":"error"},{"inputs":[],"name":"GMP_ZeroRecipient","type":"error"},{"inputs":[],"name":"GMP_ZeroSender","type":"error"},{"inputs":[],"name":"InvalidInitialization","type":"error"},{"inputs":[],"name":"Mailbox_CallFailed","type":"error"},{"inputs":[],"name":"Mailbox_HandlerNotImplemented","type":"error"},{"inputs":[{"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"Mailbox_MessagePathDisabled","type":"error"},{"inputs":[{"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"Mailbox_MessagePathEnabled","type":"error"},{"inputs":[{"internalType":"uint256","name":"expected","type":"uint256"},{"internalType":"uint256","name":"actual","type":"uint256"}],"name":"Mailbox_NotEnoughFee","type":"error"},{"inputs":[{"internalType":"uint32","name":"max","type":"uint32"},{"internalType":"uint256","name":"actual","type":"uint256"}],"name":"Mailbox_PayloadOversize","type":"error"},{"inputs":[{"internalType":"address","name":"expected","type":"address"},{"internalType":"address","name":"actual","type":"address"}],"name":"Mailbox_UnexpectedDestinationCaller","type":"error"},{"inputs":[],"name":"Mailbox_ZeroAmount","type":"error"},{"inputs":[],"name":"Mailbox_ZeroChainId","type":"error"},{"inputs":[],"name":"Mailbox_ZeroConsortium","type":"error"},{"inputs":[],"name":"Mailbox_ZeroMailbox","type":"error"},{"inputs":[],"name":"Mailbox_ZeroRecipient","type":"error"},{"inputs":[],"name":"NotInitializing","type":"error"},{"inputs":[],"name":"ReentrancyGuardReentrantCall","type":"error"},{"inputs":[{"internalType":"uint8","name":"bits","type":"uint8"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"SafeCastOverflowedUintDowncast","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"anonymous":false,"inputs":[],"name":"DefaultAdminDelayChangeCanceled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint48","name":"newDelay","type":"uint48"},{"indexed":false,"internalType":"uint48","name":"effectSchedule","type":"uint48"}],"name":"DefaultAdminDelayChangeScheduled","type":"event"},{"anonymous":false,"inputs":[],"name":"DefaultAdminTransferCanceled","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newAdmin","type":"address"},{"indexed":false,"internalType":"uint48","name":"acceptSchedule","type":"uint48"}],"name":"DefaultAdminTransferScheduled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint64","name":"maxPayloadSize","type":"uint64"}],"name":"DefaultPayloadSizeSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"}],"name":"FeePerByteSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"treasury","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"FeeWithdrawn","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint64","name":"version","type":"uint64"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"payloadHash","type":"bytes32"},{"indexed":true,"internalType":"address","name":"caller","type":"address"},{"indexed":true,"internalType":"uint256","name":"nonce","type":"uint256"},{"indexed":false,"internalType":"bytes32","name":"msgSender","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"payload","type":"bytes"}],"name":"MessageDelivered","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"payloadHash","type":"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IERC20","name":"tokenContract","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"rescueERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rollbackDefaultAdminDelay","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"destinationChain","type":"bytes32"},{"internalType":"bytes32","name":"recipient","type":"bytes32"},{"internalType":"bytes32","name":"destinationCaller","type":"bytes32"},{"internalType":"bytes","name":"body","type":"bytes"}],"name":"send","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint32","name":"maxPayloadSize","type":"uint32"}],"name":"setDefaultMaxPayloadSize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"weiPerByte","type":"uint256"}],"name":"setFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint32","name":"maxPayloadSize","type":"uint32"},{"internalType":"bool","name":"feeDisabled","type":"bool"}],"name":"setSenderConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawFee","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.