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Latest 25 from a total of 1,093 transactions
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Create Loan And ... | 6548388 | 103 days ago | IN | 0.0004474 ETH | 0.00202745 | ||||
Create Loan And ... | 6547276 | 103 days ago | IN | 0.02476557 ETH | 0.00370037 | ||||
Create Loan And ... | 6546427 | 103 days ago | IN | 0.00062497 ETH | 0.00000521 | ||||
Create Loan And ... | 6546427 | 103 days ago | IN | 0.00062497 ETH | 0.00000537 | ||||
Create Loan And ... | 6544981 | 103 days ago | IN | 0.00041854 ETH | 0.0009468 | ||||
Create Loan And ... | 6544787 | 103 days ago | IN | 0.00045094 ETH | 0.00361075 | ||||
Create Loan And ... | 6544365 | 104 days ago | IN | 0.00045089 ETH | 0.01315283 | ||||
Create Loan And ... | 6544040 | 104 days ago | IN | 0.000422 ETH | 0.00413443 | ||||
Create Loan And ... | 6543616 | 104 days ago | IN | 0.00042209 ETH | 0.00440762 | ||||
Create Loan And ... | 6543305 | 104 days ago | IN | 0.024756 ETH | 0.00458153 | ||||
Create Loan And ... | 6543305 | 104 days ago | IN | 0.024756 ETH | 0.00458131 | ||||
Deposit | 6542966 | 104 days ago | IN | 0.0004322 ETH | 0.00262894 | ||||
Create Loan And ... | 6542958 | 104 days ago | IN | 0.02468573 ETH | 0.00305295 | ||||
Deposit | 6542883 | 104 days ago | IN | 0.02301061 ETH | 0.00153588 | ||||
Create Loan And ... | 6542875 | 104 days ago | IN | 0.02475057 ETH | 0.00160837 | ||||
Deposit | 6542471 | 104 days ago | IN | 0.00038334 ETH | 0.00414041 | ||||
Deposit | 6542461 | 104 days ago | IN | 0.0004039 ETH | 0.00419569 | ||||
Create Loan And ... | 6542433 | 104 days ago | IN | 0.00041926 ETH | 0.00655715 | ||||
Deposit | 6542183 | 104 days ago | IN | 0.00043119 ETH | 0.00384729 | ||||
Create Loan And ... | 6542170 | 104 days ago | IN | 0.02417351 ETH | 0.00438199 | ||||
Deposit | 6542074 | 104 days ago | IN | 0.00043184 ETH | 0.00626948 | ||||
Create Loan And ... | 6542066 | 104 days ago | IN | 0.00044938 ETH | 0.00611382 | ||||
Create Loan And ... | 6541570 | 104 days ago | IN | 0.00045092 ETH | 0.01437692 | ||||
Deposit | 6540606 | 104 days ago | IN | 0.00038834 ETH | 0.00037815 | ||||
Deposit | 6539037 | 104 days ago | IN | 0.00040909 ETH | 0.00043264 |
Latest 25 internal transactions (View All)
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6548388 | 103 days ago | 0.0004474 ETH | ||||
6547276 | 103 days ago | 0.02476557 ETH | ||||
6546427 | 103 days ago | 0.00062497 ETH | ||||
6546427 | 103 days ago | 0.00062497 ETH | ||||
6544981 | 103 days ago | 0.00041854 ETH | ||||
6544787 | 103 days ago | 0.00045094 ETH | ||||
6544365 | 104 days ago | 0.00045089 ETH | ||||
6544040 | 104 days ago | 0.000422 ETH | ||||
6543616 | 104 days ago | 0.00042209 ETH | ||||
6543305 | 104 days ago | 0.024756 ETH | ||||
6543305 | 104 days ago | 0.024756 ETH | ||||
6542966 | 104 days ago | 0.0004322 ETH | ||||
6542958 | 104 days ago | 0.02468573 ETH | ||||
6542883 | 104 days ago | 0.02301061 ETH | ||||
6542875 | 104 days ago | 0.02475057 ETH | ||||
6542471 | 104 days ago | 0.00038334 ETH | ||||
6542461 | 104 days ago | 0.0004039 ETH | ||||
6542433 | 104 days ago | 0.00041926 ETH | ||||
6542183 | 104 days ago | 0.00043119 ETH | ||||
6542170 | 104 days ago | 0.02417351 ETH | ||||
6542074 | 104 days ago | 0.00043184 ETH | ||||
6542066 | 104 days ago | 0.00044938 ETH | ||||
6541570 | 104 days ago | 0.00045092 ETH | ||||
6540606 | 104 days ago | 0.00038834 ETH | ||||
6539037 | 104 days ago | 0.00040909 ETH |
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Contract Name:
SpokeErc20Token
Compiler Version
v0.8.20+commit.a1b79de6
Optimization Enabled:
Yes with 200 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.8.20; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "../bridge/interfaces/IBridgeRouter.sol"; import "../bridge/libraries/Messages.sol"; import "./interfaces/IAddressOracle.sol"; import "./SpokeToken.sol"; contract SpokeErc20Token is SpokeToken { address public immutable token; constructor( address admin, IBridgeRouter bridgeRouter, uint16 hubChainId, bytes32 hubContractAddress, IAddressOracle addressOracle, BucketConfig memory bucketConfig, uint8 poolId, address token_ ) SpokeToken(admin, bridgeRouter, hubChainId, hubContractAddress, addressOracle, bucketConfig, poolId) { token = token_; } function _receiveToken( Messages.MessageParams memory, uint256 amount ) internal override returns (bytes memory extraArgs, uint256 feeAmount) { // transfer tokens from sender to this spoke SafeERC20.safeTransferFrom(IERC20(token), msg.sender, address(this), amount); // not bridging token extraArgs = ""; // all value passed is available to be used feeAmount = msg.value; } function _sendToken(address recipient, uint256 amount) internal override { SafeERC20.safeTransfer(IERC20(token), recipient, amount); } function _minLimit() internal view override returns (uint256) { return IERC20(token).balanceOf(address(this)) / 100; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/AccessControl.sol) pragma solidity ^0.8.20; import {IAccessControl} from "./IAccessControl.sol"; import {Context} from "../utils/Context.sol"; import {ERC165} from "../utils/introspection/ERC165.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ```solidity * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ```solidity * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules} * to enforce additional security measures for this role. */ abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping(address account => bool) hasRole; bytes32 adminRole; } mapping(bytes32 role => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @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); _; } /** * @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) { 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) { 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 { 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) { 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) { 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 "./IAccessControlDefaultAdminRules.sol"; import {AccessControl, IAccessControl} from "../AccessControl.sol"; import {SafeCast} from "../../utils/math/SafeCast.sol"; import {Math} from "../../utils/math/Math.sol"; import {IERC5313} from "../../interfaces/IERC5313.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 AccessControlDefaultAdminRules is IAccessControlDefaultAdminRules, IERC5313, AccessControl { // pending admin pair read/written together frequently address private _pendingDefaultAdmin; uint48 private _pendingDefaultAdminSchedule; // 0 == unset uint48 private _currentDelay; address private _currentDefaultAdmin; // pending delay pair read/written together frequently uint48 private _pendingDelay; uint48 private _pendingDelaySchedule; // 0 == unset /** * @dev Sets the initial values for {defaultAdminDelay} and {defaultAdmin} address. */ constructor(uint48 initialDelay, address initialDefaultAdmin) { 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(AccessControl, 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(AccessControl, 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(AccessControl, IAccessControl) { 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) { 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) { 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) { return _currentDefaultAdmin; } /** * @inheritdoc IAccessControlDefaultAdminRules */ function pendingDefaultAdmin() public view virtual returns (address newAdmin, uint48 schedule) { return (_pendingDefaultAdmin, _pendingDefaultAdminSchedule); } /** * @inheritdoc IAccessControlDefaultAdminRules */ function defaultAdminDelay() public view virtual returns (uint48) { uint48 schedule = _pendingDelaySchedule; return (_isScheduleSet(schedule) && _hasSchedulePassed(schedule)) ? _pendingDelay : _currentDelay; } /** * @inheritdoc IAccessControlDefaultAdminRules */ function pendingDefaultAdminDelay() public view virtual returns (uint48 newDelay, uint48 schedule) { 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 { (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 { (, 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 { 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) (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 v5.0.1) (utils/Context.sol) pragma solidity ^0.8.20; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/ERC165.sol) pragma solidity ^0.8.20; import {IERC165} from "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` */ abstract contract ERC165 is IERC165 { /** * @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/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 // OpenZeppelin Contracts (last updated v5.0.0) (utils/ReentrancyGuard.sol) pragma solidity ^0.8.20; /** * @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 ReentrancyGuard { // 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; uint256 private _status; /** * @dev Unauthorized reentrant call. */ error ReentrancyGuardReentrantCall(); constructor() { _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 { // 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 { // 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) { return _status == ENTERED; } }
// SPDX-License-Identifier: Unlicense /* * @title Solidity Bytes Arrays Utils * @author Gonçalo Sá <[email protected]> * * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity. * The library lets you concatenate, slice and type cast bytes arrays both in memory and storage. */ pragma solidity >=0.8.0 <0.9.0; library BytesLib { function concat( bytes memory _preBytes, bytes memory _postBytes ) internal pure returns (bytes memory) { bytes memory tempBytes; assembly { // Get a location of some free memory and store it in tempBytes as // Solidity does for memory variables. tempBytes := mload(0x40) // Store the length of the first bytes array at the beginning of // the memory for tempBytes. let length := mload(_preBytes) mstore(tempBytes, length) // Maintain a memory counter for the current write location in the // temp bytes array by adding the 32 bytes for the array length to // the starting location. let mc := add(tempBytes, 0x20) // Stop copying when the memory counter reaches the length of the // first bytes array. let end := add(mc, length) for { // Initialize a copy counter to the start of the _preBytes data, // 32 bytes into its memory. let cc := add(_preBytes, 0x20) } lt(mc, end) { // Increase both counters by 32 bytes each iteration. mc := add(mc, 0x20) cc := add(cc, 0x20) } { // Write the _preBytes data into the tempBytes memory 32 bytes // at a time. mstore(mc, mload(cc)) } // Add the length of _postBytes to the current length of tempBytes // and store it as the new length in the first 32 bytes of the // tempBytes memory. length := mload(_postBytes) mstore(tempBytes, add(length, mload(tempBytes))) // Move the memory counter back from a multiple of 0x20 to the // actual end of the _preBytes data. mc := end // Stop copying when the memory counter reaches the new combined // length of the arrays. end := add(mc, length) for { let cc := add(_postBytes, 0x20) } lt(mc, end) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { mstore(mc, mload(cc)) } // Update the free-memory pointer by padding our last write location // to 32 bytes: add 31 bytes to the end of tempBytes to move to the // next 32 byte block, then round down to the nearest multiple of // 32. If the sum of the length of the two arrays is zero then add // one before rounding down to leave a blank 32 bytes (the length block with 0). mstore(0x40, and( add(add(end, iszero(add(length, mload(_preBytes)))), 31), not(31) // Round down to the nearest 32 bytes. )) } return tempBytes; } function concatStorage(bytes storage _preBytes, bytes memory _postBytes) internal { assembly { // Read the first 32 bytes of _preBytes storage, which is the length // of the array. (We don't need to use the offset into the slot // because arrays use the entire slot.) let fslot := sload(_preBytes.slot) // Arrays of 31 bytes or less have an even value in their slot, // while longer arrays have an odd value. The actual length is // the slot divided by two for odd values, and the lowest order // byte divided by two for even values. // If the slot is even, bitwise and the slot with 255 and divide by // two to get the length. If the slot is odd, bitwise and the slot // with -1 and divide by two. let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2) let mlength := mload(_postBytes) let newlength := add(slength, mlength) // slength can contain both the length and contents of the array // if length < 32 bytes so let's prepare for that // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage switch add(lt(slength, 32), lt(newlength, 32)) case 2 { // Since the new array still fits in the slot, we just need to // update the contents of the slot. // uint256(bytes_storage) = uint256(bytes_storage) + uint256(bytes_memory) + new_length sstore( _preBytes.slot, // all the modifications to the slot are inside this // next block add( // we can just add to the slot contents because the // bytes we want to change are the LSBs fslot, add( mul( div( // load the bytes from memory mload(add(_postBytes, 0x20)), // zero all bytes to the right exp(0x100, sub(32, mlength)) ), // and now shift left the number of bytes to // leave space for the length in the slot exp(0x100, sub(32, newlength)) ), // increase length by the double of the memory // bytes length mul(mlength, 2) ) ) ) } case 1 { // The stored value fits in the slot, but the combined value // will exceed it. // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) let sc := add(keccak256(0x0, 0x20), div(slength, 32)) // save new length sstore(_preBytes.slot, add(mul(newlength, 2), 1)) // The contents of the _postBytes array start 32 bytes into // the structure. Our first read should obtain the `submod` // bytes that can fit into the unused space in the last word // of the stored array. To get this, we read 32 bytes starting // from `submod`, so the data we read overlaps with the array // contents by `submod` bytes. Masking the lowest-order // `submod` bytes allows us to add that value directly to the // stored value. let submod := sub(32, slength) let mc := add(_postBytes, submod) let end := add(_postBytes, mlength) let mask := sub(exp(0x100, submod), 1) sstore( sc, add( and( fslot, 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00 ), and(mload(mc), mask) ) ) for { mc := add(mc, 0x20) sc := add(sc, 1) } lt(mc, end) { sc := add(sc, 1) mc := add(mc, 0x20) } { sstore(sc, mload(mc)) } mask := exp(0x100, sub(mc, end)) sstore(sc, mul(div(mload(mc), mask), mask)) } default { // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) // Start copying to the last used word of the stored array. let sc := add(keccak256(0x0, 0x20), div(slength, 32)) // save new length sstore(_preBytes.slot, add(mul(newlength, 2), 1)) // Copy over the first `submod` bytes of the new data as in // case 1 above. let slengthmod := mod(slength, 32) let mlengthmod := mod(mlength, 32) let submod := sub(32, slengthmod) let mc := add(_postBytes, submod) let end := add(_postBytes, mlength) let mask := sub(exp(0x100, submod), 1) sstore(sc, add(sload(sc), and(mload(mc), mask))) for { sc := add(sc, 1) mc := add(mc, 0x20) } lt(mc, end) { sc := add(sc, 1) mc := add(mc, 0x20) } { sstore(sc, mload(mc)) } mask := exp(0x100, sub(mc, end)) sstore(sc, mul(div(mload(mc), mask), mask)) } } } function slice( bytes memory _bytes, uint256 _start, uint256 _length ) internal pure returns (bytes memory) { require(_length + 31 >= _length, "slice_overflow"); require(_bytes.length >= _start + _length, "slice_outOfBounds"); bytes memory tempBytes; assembly { switch iszero(_length) case 0 { // Get a location of some free memory and store it in tempBytes as // Solidity does for memory variables. tempBytes := mload(0x40) // The first word of the slice result is potentially a partial // word read from the original array. To read it, we calculate // the length of that partial word and start copying that many // bytes into the array. The first word we copy will start with // data we don't care about, but the last `lengthmod` bytes will // land at the beginning of the contents of the new array. When // we're done copying, we overwrite the full first word with // the actual length of the slice. let lengthmod := and(_length, 31) // The multiplication in the next line is necessary // because when slicing multiples of 32 bytes (lengthmod == 0) // the following copy loop was copying the origin's length // and then ending prematurely not copying everything it should. let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod))) let end := add(mc, _length) for { // The multiplication in the next line has the same exact purpose // as the one above. let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start) } lt(mc, end) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { mstore(mc, mload(cc)) } mstore(tempBytes, _length) //update free-memory pointer //allocating the array padded to 32 bytes like the compiler does now mstore(0x40, and(add(mc, 31), not(31))) } //if we want a zero-length slice let's just return a zero-length array default { tempBytes := mload(0x40) //zero out the 32 bytes slice we are about to return //we need to do it because Solidity does not garbage collect mstore(tempBytes, 0) mstore(0x40, add(tempBytes, 0x20)) } } return tempBytes; } function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) { require(_bytes.length >= _start + 20, "toAddress_outOfBounds"); address tempAddress; assembly { tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000) } return tempAddress; } function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) { require(_bytes.length >= _start + 1 , "toUint8_outOfBounds"); uint8 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x1), _start)) } return tempUint; } function toUint16(bytes memory _bytes, uint256 _start) internal pure returns (uint16) { require(_bytes.length >= _start + 2, "toUint16_outOfBounds"); uint16 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x2), _start)) } return tempUint; } function toUint32(bytes memory _bytes, uint256 _start) internal pure returns (uint32) { require(_bytes.length >= _start + 4, "toUint32_outOfBounds"); uint32 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x4), _start)) } return tempUint; } function toUint64(bytes memory _bytes, uint256 _start) internal pure returns (uint64) { require(_bytes.length >= _start + 8, "toUint64_outOfBounds"); uint64 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x8), _start)) } return tempUint; } function toUint96(bytes memory _bytes, uint256 _start) internal pure returns (uint96) { require(_bytes.length >= _start + 12, "toUint96_outOfBounds"); uint96 tempUint; assembly { tempUint := mload(add(add(_bytes, 0xc), _start)) } return tempUint; } function toUint128(bytes memory _bytes, uint256 _start) internal pure returns (uint128) { require(_bytes.length >= _start + 16, "toUint128_outOfBounds"); uint128 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x10), _start)) } return tempUint; } function toUint256(bytes memory _bytes, uint256 _start) internal pure returns (uint256) { require(_bytes.length >= _start + 32, "toUint256_outOfBounds"); uint256 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x20), _start)) } return tempUint; } function toBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32) { require(_bytes.length >= _start + 32, "toBytes32_outOfBounds"); bytes32 tempBytes32; assembly { tempBytes32 := mload(add(add(_bytes, 0x20), _start)) } return tempBytes32; } function equal(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) { bool success = true; assembly { let length := mload(_preBytes) // if lengths don't match the arrays are not equal switch eq(length, mload(_postBytes)) case 1 { // cb is a circuit breaker in the for loop since there's // no said feature for inline assembly loops // cb = 1 - don't breaker // cb = 0 - break let cb := 1 let mc := add(_preBytes, 0x20) let end := add(mc, length) for { let cc := add(_postBytes, 0x20) // the next line is the loop condition: // while(uint256(mc < end) + cb == 2) } eq(add(lt(mc, end), cb), 2) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { // if any of these checks fails then arrays are not equal if iszero(eq(mload(mc), mload(cc))) { // unsuccess: success := 0 cb := 0 } } } default { // unsuccess: success := 0 } } return success; } function equal_nonAligned(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) { bool success = true; assembly { let length := mload(_preBytes) // if lengths don't match the arrays are not equal switch eq(length, mload(_postBytes)) case 1 { // cb is a circuit breaker in the for loop since there's // no said feature for inline assembly loops // cb = 1 - don't breaker // cb = 0 - break let cb := 1 let endMinusWord := add(_preBytes, length) let mc := add(_preBytes, 0x20) let cc := add(_postBytes, 0x20) for { // the next line is the loop condition: // while(uint256(mc < endWord) + cb == 2) } eq(add(lt(mc, endMinusWord), cb), 2) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { // if any of these checks fails then arrays are not equal if iszero(eq(mload(mc), mload(cc))) { // unsuccess: success := 0 cb := 0 } } // Only if still successful // For <1 word tail bytes if gt(success, 0) { // Get the remainder of length/32 // length % 32 = AND(length, 32 - 1) let numTailBytes := and(length, 0x1f) let mcRem := mload(mc) let ccRem := mload(cc) for { let i := 0 // the next line is the loop condition: // while(uint256(i < numTailBytes) + cb == 2) } eq(add(lt(i, numTailBytes), cb), 2) { i := add(i, 1) } { if iszero(eq(byte(i, mcRem), byte(i, ccRem))) { // unsuccess: success := 0 cb := 0 } } } } default { // unsuccess: success := 0 } } return success; } function equalStorage( bytes storage _preBytes, bytes memory _postBytes ) internal view returns (bool) { bool success = true; assembly { // we know _preBytes_offset is 0 let fslot := sload(_preBytes.slot) // Decode the length of the stored array like in concatStorage(). let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2) let mlength := mload(_postBytes) // if lengths don't match the arrays are not equal switch eq(slength, mlength) case 1 { // slength can contain both the length and contents of the array // if length < 32 bytes so let's prepare for that // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage if iszero(iszero(slength)) { switch lt(slength, 32) case 1 { // blank the last byte which is the length fslot := mul(div(fslot, 0x100), 0x100) if iszero(eq(fslot, mload(add(_postBytes, 0x20)))) { // unsuccess: success := 0 } } default { // cb is a circuit breaker in the for loop since there's // no said feature for inline assembly loops // cb = 1 - don't breaker // cb = 0 - break let cb := 1 // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) let sc := keccak256(0x0, 0x20) let mc := add(_postBytes, 0x20) let end := add(mc, mlength) // the next line is the loop condition: // while(uint256(mc < end) + cb == 2) for {} eq(add(lt(mc, end), cb), 2) { sc := add(sc, 1) mc := add(mc, 0x20) } { if iszero(eq(sload(sc), mload(mc))) { // unsuccess: success := 0 cb := 0 } } } } } default { // unsuccess: success := 0 } } return success; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.8.20; import "@openzeppelin/contracts/utils/ReentrancyGuard.sol"; import "./interfaces/IBridgeRouter.sol"; import "./libraries/Messages.sol"; abstract contract BridgeMessenger is ReentrancyGuard { error InvalidBridgeRouter(address router); error CannotReceiveMessage(bytes32 messageId); error CannotReverseMessage(bytes32 messageId); IBridgeRouter internal immutable bridgeRouter; modifier onlyRouter() { if (msg.sender != address(bridgeRouter)) revert InvalidBridgeRouter(msg.sender); _; } constructor(IBridgeRouter bridgeRouter_) { bridgeRouter = bridgeRouter_; } function receiveMessage(Messages.MessageReceived memory message) external virtual onlyRouter nonReentrant { _receiveMessage(message); } function reverseMessage( Messages.MessageReceived memory message, bytes memory extraArgs ) external virtual onlyRouter nonReentrant { _reverseMessage(message, extraArgs); } function getBridgeRouter() public view returns (address) { return address(bridgeRouter); } function _sendMessage(Messages.MessageToSend memory message, uint256 feeAmount) internal virtual { bridgeRouter.sendMessage{ value: feeAmount }(message); } function _receiveMessage(Messages.MessageReceived memory message) internal virtual; function _reverseMessage(Messages.MessageReceived memory message, bytes memory extraArgs) internal virtual; }
// SPDX-License-Identifier: MIT pragma solidity 0.8.20; import "../libraries/Messages.sol"; interface IBridgeAdapter { event SendMessage(bytes32 operationId, Messages.MessageToSend message); event ReceiveMessage(bytes32 indexed messageId); error ChainAlreadyAdded(uint16 chainId); error ChainUnavailable(uint16 chainId); error InvalidBridgeRouter(address router); error InvalidMessageSender(bytes32 sourceAddress); error InvalidFinalityLevel(uint64 finalityLevel); error InvalidTokenAddress(bytes32 token); error InvalidReceivedAmount(uint256 expected, uint256 actual); error UnsupportedFinalityLevel(uint64 finalityLevel); error UnsupportedExtraArgs(); error EmptyExtraArgs(); function MANAGER_ROLE() external view returns (bytes32); function getSendFee(Messages.MessageToSend memory message) external view returns (uint256 fee); function sendMessage(Messages.MessageToSend memory message) external payable; /** * @notice Determine if chain is available to send messages to * @param chainId destination chain (as defined by Folks) * @return isAvailable whether is available */ function isChainAvailable(uint16 chainId) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.20; import "./IBridgeAdapter.sol"; import "../libraries/Messages.sol"; interface IBridgeRouter { function MANAGER_ROLE() external view returns (bytes32); function MESSAGE_SENDER_ROLE() external view returns (bytes32); function getAdapter(uint16 adapterId) external view returns (IBridgeAdapter); function getSendFee(Messages.MessageToSend memory message) external view returns (uint256); function sendMessage(Messages.MessageToSend memory message) external payable; function receiveMessage(Messages.MessageReceived memory message) external payable; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.8.20; import "@solidity-bytes-utils/contracts/BytesLib.sol"; library Messages { using BytesLib for bytes; error InvalidExtraArgsTag(); struct MessageParams { uint16 adapterId; // where to route message through uint16 returnAdapterId; // if applicable, where to route message through for return message uint256 receiverValue; // amount of value to attach for receive message uint256 gasLimit; // gas limit for receive message uint256 returnGasLimit; // if applicable, gas limit for return message } struct MessageToSend { Messages.MessageParams params; // message parameters bytes32 sender; // source address which sent the message uint16 destinationChainId; // chain to send message to bytes32 handler; // address to handle the message received bytes payload; // message payload uint64 finalityLevel; // zero for immediate, non-zero for finalised bytes extraArgs; } // bytes4(keccak256("Folks ExtraArgsV1)); bytes4 public constant EXTRA_ARGS_V1_TAG = 0x1b366e79; struct ExtraArgsV1 { bytes32 token; bytes32 recipient; uint256 amount; } function extraArgsToBytes(ExtraArgsV1 memory extraArgs) internal pure returns (bytes memory bts) { return abi.encodeWithSelector(EXTRA_ARGS_V1_TAG, extraArgs); } function bytesToExtraArgs(bytes calldata bts) internal pure returns (Messages.ExtraArgsV1 memory extraArgs) { if (bts.length > 0) { if (bytes4(bts) != EXTRA_ARGS_V1_TAG) revert InvalidExtraArgsTag(); extraArgs = abi.decode(bts[4:], (Messages.ExtraArgsV1)); } } struct MessageReceived { bytes32 messageId; // uniquie identifier for message when combined with adapter id uint16 sourceChainId; // chain where message is sent from bytes32 sourceAddress; // address where message is sent from (e.g. spoke) bytes32 handler; // address of smart contract (which inherits from BridgeMessenger) to handle message received bytes payload; // message payload uint16 returnAdapterId; // if applicable, where to route message through for return message uint256 returnGasLimit; // if applicable, gas limit for return message } function convertEVMAddressToGenericAddress(address addr) internal pure returns (bytes32) { return bytes32(uint256(uint160(addr))); } function convertGenericAddressToEVMAddress(bytes32 addr) internal pure returns (address) { return address(uint160(uint256(addr))); } enum Action { // SPOKE -> HUB CreateAccount, InviteAddress, AcceptInviteAddress, UnregisterAddress, AddDelegate, RemoveDelegate, CreateLoan, DeleteLoan, CreateLoanAndDeposit, Deposit, DepositFToken, Withdraw, WithdrawFToken, Borrow, Repay, RepayWithCollateral, Liquidate, SwitchBorrowType, // HUB -> SPOKE SendToken } struct MessagePayload { Action action; bytes32 accountId; bytes32 userAddress; bytes data; } function encodeMessagePayload(MessagePayload memory payload) internal pure returns (bytes memory) { return abi.encodePacked(uint16(payload.action), payload.accountId, payload.userAddress, payload.data); } function decodeActionPayload(bytes memory serialized) internal pure returns (MessagePayload memory payload) { uint256 index = 0; payload.action = Action(serialized.toUint16(index)); index += 2; payload.accountId = serialized.toBytes32(index); index += 32; payload.userAddress = serialized.toBytes32(index); index += 32; payload.data = serialized.slice(index, serialized.length - index); } struct MessageMetadata { uint16 returnAdapterId; uint256 returnGasLimit; bytes32 sender; bytes32 handler; } function encodePayloadWithMetadata(Messages.MessageToSend memory message) internal pure returns (bytes memory) { return abi.encodePacked( message.params.returnAdapterId, message.params.returnGasLimit, message.sender, message.handler, message.payload ); } function decodePayloadWithMetadata( bytes memory serialized ) internal pure returns (MessageMetadata memory metadata, bytes memory payload) { uint256 index = 0; metadata.returnAdapterId = serialized.toUint16(index); index += 2; metadata.returnGasLimit = serialized.toUint256(index); index += 32; metadata.sender = serialized.toBytes32(index); index += 32; metadata.handler = serialized.toBytes32(index); index += 32; payload = serialized.slice(index, serialized.length - index); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.20; interface IAddressOracle { error AddressIneligible(address addr, uint16 action); function isEligible(address addr, uint16 action) external view returns (bool); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.8.20; import "@openzeppelin/contracts/access/extensions/AccessControlDefaultAdminRules.sol"; import "@openzeppelin/contracts/utils/math/Math.sol"; abstract contract RateLimited is AccessControlDefaultAdminRules { bytes32 public constant CONFIG_RATE_LIMIT_ROLE = keccak256("CONFIG_RATE_LIMIT"); bytes32 public constant BOOST_RATE_LIMIT_ROLE = keccak256("BOOST_RATE_LIMIT"); error PeriodTooLow(); error PeriodTooHigh(); error InvalidOffset(); error InsufficientCapacity(uint256 capacity, uint256 requested); event PeriodUpdated(uint256 periodNumber, uint256 capacity); event CapacityIncreased(uint256 periodNumber, uint256 amount, uint256 newCapacity); event CapacityDecreased(uint256 periodNumber, uint256 amount, uint256 newCapacity); struct BucketConfig { uint32 period; // length of time in seconds before limit resets (1 hour - 1 week) uint32 offset; // used to control when change in period occurs uint256 limit; // max to consume per period } BucketConfig public bucketConfig; uint32 public currentPeriodNumber; // the period we are in uint256 public currentCapacity; // capacity in period /** * @notice Contructor * @param admin The default admin for RateLimiter * @param bucketConfig_ The initial bucket configuration */ constructor(address admin, BucketConfig memory bucketConfig_) { _setBucketConfig(bucketConfig_); _grantRole(CONFIG_RATE_LIMIT_ROLE, admin); _grantRole(BOOST_RATE_LIMIT_ROLE, admin); } function setBucketConfig(BucketConfig memory newBucketConfig) external onlyRole(CONFIG_RATE_LIMIT_ROLE) { _setBucketConfig(newBucketConfig); } function boostCapacity(uint256 amount) external onlyRole(BOOST_RATE_LIMIT_ROLE) { _updatePeriod(); // boost capacity temporarily currentCapacity += amount; } function _setBucketConfig(BucketConfig memory newBucketConfig) internal { if (newBucketConfig.period < 1 hours) revert PeriodTooLow(); if (newBucketConfig.period > 1 weeks) revert PeriodTooHigh(); if (newBucketConfig.offset >= newBucketConfig.period) revert InvalidOffset(); // period is updated next time capacity is increased/decreased bucketConfig = newBucketConfig; } function _updatePeriod() internal { uint32 periodNumber = (uint32(block.timestamp) + bucketConfig.offset) / bucketConfig.period; // if new period, reset capacity if (periodNumber != currentPeriodNumber) { currentPeriodNumber = periodNumber; currentCapacity = Math.max(_minLimit(), bucketConfig.limit); emit PeriodUpdated(periodNumber, currentCapacity); } } function _decreaseCapacity(uint256 amount) internal { _updatePeriod(); // decrease capacity if availablity to if (currentCapacity < amount) revert InsufficientCapacity(currentCapacity, amount); currentCapacity -= amount; emit CapacityDecreased(currentPeriodNumber, amount, currentCapacity); } function _increaseCapacity(uint256 amount) internal { _updatePeriod(); // increase capacity without overflowing unchecked { uint256 newCapacity = currentCapacity + amount; currentCapacity = newCapacity < currentCapacity ? type(uint256).max : newCapacity; } emit CapacityIncreased(currentPeriodNumber, amount, currentCapacity); } function _minLimit() internal view virtual returns (uint256); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.8.20; import "@openzeppelin/contracts/access/extensions/AccessControlDefaultAdminRules.sol"; import "./interfaces/IAddressOracle.sol"; contract SpokeState is AccessControlDefaultAdminRules { struct Hub { uint16 chainId; bytes32 contractAddress; } bytes32 public constant CONFIG_CONTRACTS_ROLE = keccak256("CONFIG_CONTRACTS"); Hub internal _hub; IAddressOracle internal _addressOracle; constructor( address admin, uint16 hubChainId, bytes32 hubContractAddress, IAddressOracle addressOracle_ ) AccessControlDefaultAdminRules(1 days, admin) { _setHub(hubChainId, hubContractAddress); _setAddressOracle(addressOracle_); _grantRole(CONFIG_CONTRACTS_ROLE, admin); } function setHub(uint16 chainId, bytes32 contractAddress) external onlyRole(CONFIG_CONTRACTS_ROLE) { _setHub(chainId, contractAddress); } function setAddressOracle(IAddressOracle newAddressOracle) external onlyRole(CONFIG_CONTRACTS_ROLE) { _setAddressOracle(newAddressOracle); } function _setHub(uint16 chainId, bytes32 contractAddress) internal { _hub = SpokeState.Hub({ chainId: chainId, contractAddress: contractAddress }); } function _setAddressOracle(IAddressOracle newAddressOracle) internal { _addressOracle = newAddressOracle; } function getHubChainId() public view returns (uint16) { return _hub.chainId; } function getHubContractAddress() public view returns (bytes32) { return _hub.contractAddress; } function getAddressOracle() public view returns (address) { return address(_addressOracle); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.8.20; import "@openzeppelin/contracts/utils/ReentrancyGuard.sol"; import "@solidity-bytes-utils/contracts/BytesLib.sol"; import "../bridge/BridgeMessenger.sol"; import "../bridge/interfaces/IBridgeRouter.sol"; import "../bridge/libraries/Messages.sol"; import "./interfaces/IAddressOracle.sol"; import "./RateLimited.sol"; import "./SpokeState.sol"; abstract contract SpokeToken is BridgeMessenger, SpokeState, RateLimited { using BytesLib for bytes; error HubUnknown(uint16 chainId, bytes32 addr); uint8 public immutable poolId; constructor( address admin, IBridgeRouter bridgeRouter, uint16 hubChainId, bytes32 hubContractAddress, IAddressOracle addressOracle, BucketConfig memory bucketConfig, uint8 poolId_ ) BridgeMessenger(bridgeRouter) SpokeState(admin, hubChainId, hubContractAddress, addressOracle) RateLimited(admin, bucketConfig) { poolId = poolId_; } /** * @notice Create loan and deposit token into new loan * @param params The parameters for sending message to hub chain * @param accountId The account id of the loan * @param loanId The loan id to create and deposit into * @param amount The amount to deposit * @param loanTypeId The load type to create * @param loanName The loan name to help identify the loan to user */ function createLoanAndDeposit( Messages.MessageParams memory params, bytes32 accountId, bytes32 loanId, uint256 amount, uint16 loanTypeId, bytes32 loanName ) external payable nonReentrant { _doOperation( params, Messages.Action.CreateLoanAndDeposit, accountId, amount, abi.encodePacked(loanId, poolId, amount, loanTypeId, loanName) ); } /** * @notice Deposit token into specified loan * @param params The parameters for sending message to hub chain * @param accountId The account id of the loan * @param loanId The loan id to deposit into * @param amount The amount to deposit */ function deposit( Messages.MessageParams memory params, bytes32 accountId, bytes32 loanId, uint256 amount ) external payable nonReentrant { _doOperation(params, Messages.Action.Deposit, accountId, amount, abi.encodePacked(loanId, poolId, amount)); } /** * @notice Repay borrow in specified loan * @param params The parameters for sending message to hub chain * @param accountId The account id of the loan * @param loanId The loan id to repay in * @param amount The amount to repay * @param maxOverRepayment The maximum acceptable threshold to over-repay by (excess not refunded) */ function repay( Messages.MessageParams memory params, bytes32 accountId, bytes32 loanId, uint256 amount, uint256 maxOverRepayment ) external payable nonReentrant { _doOperation( params, Messages.Action.Repay, accountId, amount, abi.encodePacked(loanId, poolId, amount, maxOverRepayment) ); } function _doOperation( Messages.MessageParams memory params, Messages.Action action, bytes32 accountId, uint256 amount, bytes memory data ) internal { // check sender is eligible to do given action if (!_addressOracle.isEligible(msg.sender, uint16(action))) revert IAddressOracle.AddressIneligible(msg.sender, uint16(action)); // increase rate limit token capacity temporarily for period _increaseCapacity(amount); // receive tokens from msg.sender (bytes memory extraArgs, uint256 feeAmount) = _receiveToken(params, amount); // construct message Messages.MessageToSend memory message = Messages.MessageToSend({ params: params, sender: Messages.convertEVMAddressToGenericAddress(address(this)), destinationChainId: _hub.chainId, handler: _hub.contractAddress, payload: Messages.encodeMessagePayload( Messages.MessagePayload({ action: action, accountId: accountId, userAddress: Messages.convertEVMAddressToGenericAddress(msg.sender), data: data }) ), finalityLevel: 1, // finalised extraArgs: extraArgs }); // send message _sendMessage(message, feeAmount); } /** * @notice Receive token from msg.sender into Spoke (or adapter if being bridged) * @param params The parameters for sending message to hub chain * @param amount The amount of token to receive * @return extraArgs needed when sending message and fee amount to use */ function _receiveToken( Messages.MessageParams memory params, uint256 amount ) internal virtual returns (bytes memory extraArgs, uint256 feeAmount); /** * @notice Send token from Spoke to recipient * @param recipient The token recipient * @param amount The amount of token to send */ function _sendToken(address recipient, uint256 amount) internal virtual; function _receiveMessage(Messages.MessageReceived memory message) internal override { Messages.MessagePayload memory payload = Messages.decodeActionPayload(message.payload); // ensure message sender is recognised bool isHub = message.sourceChainId == _hub.chainId && message.sourceAddress == _hub.contractAddress; if (!isHub) revert HubUnknown(message.sourceChainId, message.sourceAddress); // switch on payload action uint256 index = 0; if (payload.action == Messages.Action.SendToken) { address recipient = Messages.convertGenericAddressToEVMAddress(payload.userAddress); uint256 amount = payload.data.toUint256(index); // ensure capacity is sufficient, and if so, send token to user _decreaseCapacity(amount); _sendToken(recipient, amount); } else { revert CannotReceiveMessage(message.messageId); } } function _reverseMessage(Messages.MessageReceived memory message, bytes memory) internal pure override { revert CannotReverseMessage(message.messageId); } }
{ "evmVersion": "paris", "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": {} }
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Messages.MessageReceived","name":"message","type":"tuple"}],"name":"receiveMessage","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"uint16","name":"adapterId","type":"uint16"},{"internalType":"uint16","name":"returnAdapterId","type":"uint16"},{"internalType":"uint256","name":"receiverValue","type":"uint256"},{"internalType":"uint256","name":"gasLimit","type":"uint256"},{"internalType":"uint256","name":"returnGasLimit","type":"uint256"}],"internalType":"struct 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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : admin (address): 0x16870a6A85cD152229B97d018194d66740f932d6
Arg [1] : bridgeRouter (address): 0xBeF7aB7C5e6CeFF384cde460dd20C862047CDFa5
Arg [2] : hubChainId (uint16): 1
Arg [3] : hubContractAddress (bytes32): 0x000000000000000000000000ae4c62510f4d930a5c8796dbfb8c4bc7b9b62140
Arg [4] : addressOracle (address): 0x2b760759e4f8D994BeB2B9aFBA8De37eCf13F9B3
Arg [5] : bucketConfig (tuple): System.Collections.Generic.List`1[Nethereum.ABI.FunctionEncoding.ParameterOutput]
Arg [6] : poolId (uint8): 132
Arg [7] : token_ (address): 0x779877A7B0D9E8603169DdbD7836e478b4624789
-----Encoded View---------------
10 Constructor Arguments found :
Arg [0] : 00000000000000000000000016870a6a85cd152229b97d018194d66740f932d6
Arg [1] : 000000000000000000000000bef7ab7c5e6ceff384cde460dd20c862047cdfa5
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [3] : 000000000000000000000000ae4c62510f4d930a5c8796dbfb8c4bc7b9b62140
Arg [4] : 0000000000000000000000002b760759e4f8d994beb2b9afba8de37ecf13f9b3
Arg [5] : 0000000000000000000000000000000000000000000000000000000000015180
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [7] : 00000000000000000000000000000000000000000000001b1ae4d6e2ef500000
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000084
Arg [9] : 000000000000000000000000779877a7b0d9e8603169ddbd7836e478b4624789
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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.