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ERC-20
DeFi
Overview
Max Total Supply
10,116,059.053171917456126992 USDz
Holders
455 ( 0.440%)
Market
Price
$0.98 @ 0.000299 ETH (+0.96%)
Onchain Market Cap
$9,944,035.47
Circulating Supply Market Cap
$95,169,742.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
20 USDzValue
$19.66 ( ~0.00597544619135757 Eth) [0.0002%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Source Code Verified (Exact Match)
Contract Name:
USDz
Compiler Version
v0.8.24+commit.e11b9ed9
Optimization Enabled:
Yes with 200 runs
Other Settings:
cancun EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.21; import "@openzeppelin/contracts/access/AccessControl.sol"; import "@openzeppelin/contracts/utils/Pausable.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Permit.sol"; import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol"; import "@layerzerolabs/lz-evm-oapp-v2/contracts/oft/OFT.sol"; import "./utils/SafeMath.sol"; import "./interfaces/ISPCTPool.sol"; import "./interfaces/ISPCTPriceOracle.sol"; /** * @title Stablecoin backed by RWA for Anzen protocol. */ contract USDz is OFT, ERC20Permit, AccessControl, Pausable { using SafeERC20 for IERC20; using SafeMath for uint256; bytes32 public constant POOL_MANAGER_ROLE = keccak256("POOL_MANAGER_ROLE"); // Migration mode (disable deposits) bool public mode; // false by default // Used to calculate total pooled SPCT. uint256 public totalPooledSPCT; // Used to calculate collateral rate. uint256 public constant collateralRate = 1; // Fee Zone uint256 public constant FEE_COEFFICIENT = 1e8; // Fee should be less than 1%. uint256 public constant maxMintFeeRate = FEE_COEFFICIENT / 100; uint256 public constant maxRedeemFeeRate = FEE_COEFFICIENT / 100; uint256 public mintFeeRate; uint256 public redeemFeeRate; // Protocol treasury should be a mulsig wallet. address public treasury; // Make owner transfer 2 step. address private _pendingOwner; // Lend token IERC20 public immutable usdc; // Collateral token ISPCTPool public immutable spct; // Price oracle ISPCTPriceOracle public oracle; /** * @dev Blacklist. */ mapping(address => bool) private _blacklist; event ModeSwitch(bool mode); event Deposit(address indexed user, uint256 indexed amount); event Redeem(address indexed user, uint256 indexed amount); event Mint(address indexed user, uint256 indexed amount); event Burn(address indexed user, uint256 indexed amount); event MintFeeRateChanged(uint256 indexed newFeeRate); event RedeemFeeRateChanged(uint256 indexed newFeeRate); event TreasuryChanged(address indexed newTreasury); event OracleChanged(address newOracle); event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner); constructor(address _admin, address _endpoint, IERC20 _usdc, ISPCTPool _spct, ISPCTPriceOracle _oracle) OFT("USDz", "USDz", _endpoint, _admin) ERC20Permit("USDz") Ownable(_admin) { _grantRole(DEFAULT_ADMIN_ROLE, _admin); usdc = _usdc; spct = _spct; oracle = _oracle; } // @dev Sets an implicit cap on the amount of tokens, over uint64.max() will need some sort of outbound cap / totalSupply cap // Lowest common decimal denominator between chains. // Defaults to 6 decimal places to provide up to 18,446,744,073,709.551615 units (max uint64). // For tokens exceeding this totalSupply(), they will need to override the sharedDecimals function with something smaller. // ie. 4 sharedDecimals would be 1,844,674,407,370,955.1615 function sharedDecimals() public pure override returns (uint8) { return 8; } modifier checkCollateralRate() { _checkCollateralRate(); _; } /** * @notice Check collateral rate. */ function _checkCollateralRate() internal view { require(oracle.getPrice() / 1e18 >= collateralRate, "UNDER_COLLATERAL_RATE,SMART_CONTRACT_IS_PAUSED_NOW"); } /** * @notice Pause the contract. Revert if already paused. */ function pause() external onlyRole(DEFAULT_ADMIN_ROLE) { _pause(); } /** * @notice Unpause the contract. Revert if already unpaused. */ function unpause() external onlyRole(DEFAULT_ADMIN_ROLE) { _unpause(); } /** * @notice Switch to interest mode. * Emits a `ModeSwitch` event. */ function switchMode() external onlyRole(DEFAULT_ADMIN_ROLE) { mode = !mode; emit ModeSwitch(mode); } /** * @notice deposit USDC. (borrow USDC from user and deposit collateral) * Emits a `Deposit` event. * * @param _amount the amount of USDC */ function deposit(uint256 _amount) external whenNotPaused checkCollateralRate { if (mode) revert("PLEASE_MIGRATE_TO_NEW_VERSION"); require(_amount > 0, "DEPOSIT_AMOUNT_IS_ZERO"); require(!_blacklist[msg.sender], "RECIPIENT_IN_BLACKLIST"); IERC20(usdc).safeTransferFrom(msg.sender, address(this), _amount); IERC20(usdc).safeIncreaseAllowance(address(spct), _amount); // approve for depositing collateral // Due to different precisions, convert it to USDz. uint256 convertToSPCT = _amount.mul(1e12); // Get mint rate from spct for calculating. uint256 spctMintFeeRate = spct.mintFeeRate(); // calculate fee with USDz if (mintFeeRate == 0) { if (spctMintFeeRate == 0) { _mintUSDz(msg.sender, convertToSPCT); spct.deposit(_amount); } else { uint256 spctFeeAmount = convertToSPCT.mul(spctMintFeeRate).div(FEE_COEFFICIENT); uint256 spctAmountAfterFee = convertToSPCT.sub(spctFeeAmount); _mintUSDz(msg.sender, spctAmountAfterFee); spct.deposit(_amount); } } else { if (spctMintFeeRate == 0) { uint256 feeAmount = convertToSPCT.mul(mintFeeRate).div(FEE_COEFFICIENT); uint256 amountAfterFee = convertToSPCT.sub(feeAmount); _mintUSDz(msg.sender, amountAfterFee); if (feeAmount != 0) { _mintUSDz(treasury, feeAmount); } spct.deposit(_amount); } else { uint256 spctFeeAmount = convertToSPCT.mul(spctMintFeeRate).div(FEE_COEFFICIENT); uint256 spctAmountAfterFee = convertToSPCT.sub(spctFeeAmount); uint256 feeAmount = spctAmountAfterFee.mul(mintFeeRate).div(FEE_COEFFICIENT); uint256 amountAfterFee = spctAmountAfterFee.sub(feeAmount); _mintUSDz(msg.sender, amountAfterFee); if (feeAmount != 0) { _mintUSDz(treasury, feeAmount); } spct.deposit(_amount); } } emit Deposit(msg.sender, _amount); } /** * @notice deposit SPCT. (deposit collateral to mint USDz) * Emits a `Deposit` event. * * @param _amount the amount of SPCT */ function depositBySPCT(uint256 _amount) external whenNotPaused checkCollateralRate { require(mode == false, "PLEASE_MIGRATE_TO_NEW_VERSION"); require(_amount > 0, "DEPOSIT_AMOUNT_IS_ZERO"); require(!_blacklist[msg.sender], "RECIPIENT_IN_BLACKLIST"); IERC20(address(spct)).safeTransferFrom(msg.sender, address(this), _amount); // calculate fee with USDz if (mintFeeRate == 0) { _mintUSDz(msg.sender, _amount); } else { uint256 feeAmount = _amount.mul(mintFeeRate).div(FEE_COEFFICIENT); uint256 amountAfterFee = _amount.sub(feeAmount); _mintUSDz(msg.sender, amountAfterFee); if (feeAmount != 0) { _mintUSDz(treasury, feeAmount); } } emit Deposit(msg.sender, _amount); } /** * @notice redeem USDz. (get back USDC from borrower and release collateral) * 18 decimal input * Emits a `Redeem` event. * * @param _amount the amount of USDz. */ function redeem(uint256 _amount) external whenNotPaused checkCollateralRate { require(spct.reserveUSD().mul(1e12) >= _amount, "RESERVE_INSUFFICIENT"); require(_amount > 0, "REDEEM_AMOUNT_IS_ZERO"); require(!_blacklist[msg.sender], "RECIPIENT_IN_BLACKLIST"); // Due to different precisions, convert it to USDz. uint256 convertToUSDC; // Get redeem rate from spct for calculating. uint256 spctRedeemFeeRate = spct.redeemFeeRate(); // calculate fee with USDz if (redeemFeeRate == 0) { if (spctRedeemFeeRate == 0) { _burnUSDz(msg.sender, _amount); spct.redeem(_amount); convertToUSDC = _amount.div(1e12); IERC20(usdc).safeTransfer(msg.sender, convertToUSDC); } else { uint256 spctFeeAmount = _amount.mul(spctRedeemFeeRate).div(FEE_COEFFICIENT); uint256 spctAmountAfterFee = _amount.sub(spctFeeAmount); _burnUSDz(msg.sender, _amount); spct.redeem(_amount); convertToUSDC = spctAmountAfterFee.div(1e12); IERC20(usdc).safeTransfer(msg.sender, convertToUSDC); } } else { if (spctRedeemFeeRate == 0) { uint256 feeAmount = _amount.mul(redeemFeeRate).div(FEE_COEFFICIENT); uint256 amountAfterFee = _amount.sub(feeAmount); _burnUSDz(msg.sender, amountAfterFee); if (feeAmount != 0) { _transfer(msg.sender, treasury, feeAmount); } spct.redeem(amountAfterFee); convertToUSDC = amountAfterFee.div(1e12); IERC20(usdc).safeTransfer(msg.sender, convertToUSDC); } else { uint256 feeAmount = _amount.mul(redeemFeeRate).div(FEE_COEFFICIENT); uint256 amountAfterFee = _amount.sub(feeAmount); uint256 spctFeeAmount = amountAfterFee.mul(spctRedeemFeeRate).div(FEE_COEFFICIENT); uint256 spctAmountAfterFee = amountAfterFee.sub(spctFeeAmount); _burnUSDz(msg.sender, amountAfterFee); if (feeAmount != 0) { _transfer(msg.sender, treasury, feeAmount); } spct.redeem(amountAfterFee); convertToUSDC = spctAmountAfterFee.div(1e12); IERC20(usdc).safeTransfer(msg.sender, convertToUSDC); } } emit Redeem(msg.sender, _amount); } /** * @notice redeem USDz. (get back SPCT) * Emits a `Redeem` event. * * @param _amount the amount of USDz. */ function redeemBackSPCT(uint256 _amount) external whenNotPaused checkCollateralRate { require(_amount > 0, "REDEEM_AMOUNT_IS_ZERO"); require(!_blacklist[msg.sender], "SENDER_IN_BLACKLIST"); // calculate fee with SPCT if (redeemFeeRate == 0) { _burnUSDz(msg.sender, _amount); IERC20(address(spct)).safeTransfer(msg.sender, _amount); } else { uint256 feeAmount = _amount.mul(redeemFeeRate).div(FEE_COEFFICIENT); uint256 amountAfterFee = _amount.sub(feeAmount); _burnUSDz(msg.sender, amountAfterFee); if (feeAmount != 0) { _transfer(msg.sender, treasury, feeAmount); } IERC20(address(spct)).safeTransfer(msg.sender, amountAfterFee); } emit Redeem(msg.sender, _amount); } /** * @dev mint USDz for _receiver. * Emits `Mint` and `Transfer` event. * * @param _receiver address to receive SPCT. * @param _amount the amount of SPCT. */ function _mintUSDz(address _receiver, uint256 _amount) internal { _mint(_receiver, _amount); totalPooledSPCT = totalPooledSPCT.add(_amount); emit Mint(msg.sender, _amount); } /** * @dev burn USDz from _receiver. * Emits `Burn` and `Transfer` event. * * @param _account address to burn USDz from. * @param _amount the amount of USDz. */ function _burnUSDz(address _account, uint256 _amount) internal { _burn(_account, _amount); totalPooledSPCT = totalPooledSPCT.sub(_amount); emit Burn(msg.sender, _amount); } /** * @notice Moves `_amount` tokens from `_sender` to `_recipient`. * Emits a `Transfer` event. */ function _update(address _sender, address _recipient, uint256 _amount) internal override { require(!_blacklist[_sender], "SENDER_IN_BLACKLIST"); require(!_blacklist[_recipient], "RECIPIENT_IN_BLACKLIST"); super._update(_sender, _recipient, _amount); } /** * @return true if user in list. */ function isBlacklist(address _user) external view returns (bool) { return _blacklist[_user]; } function addToBlacklist(address _user) external onlyRole(POOL_MANAGER_ROLE) { _blacklist[_user] = true; } function addBatchToBlacklist(address[] calldata _users) external onlyRole(POOL_MANAGER_ROLE) { uint256 numUsers = _users.length; for (uint256 i; i < numUsers; ++i) { _blacklist[_users[i]] = true; } } function removeFromBlacklist(address _user) external onlyRole(POOL_MANAGER_ROLE) { _blacklist[_user] = false; } function removeBatchFromBlacklist(address[] calldata _users) external onlyRole(POOL_MANAGER_ROLE) { uint256 numUsers = _users.length; for (uint256 i; i < numUsers; ++i) { _blacklist[_users[i]] = false; } } /** * @notice Mint fee. * * @param newMintFeeRate new mint fee rate. */ function setMintFeeRate(uint256 newMintFeeRate) external onlyRole(POOL_MANAGER_ROLE) { require(newMintFeeRate <= maxMintFeeRate, "SHOULD_BE_LESS_THAN_OR_EQUAL_TO_1P"); mintFeeRate = newMintFeeRate; emit MintFeeRateChanged(mintFeeRate); } /** * @notice Redeem fee. * * @param newRedeemFeeRate new redeem fee rate. */ function setRedeemFeeRate(uint256 newRedeemFeeRate) external onlyRole(POOL_MANAGER_ROLE) { require(newRedeemFeeRate <= maxRedeemFeeRate, "SHOULD_BE_LESS_THAN_OR_EQUAL_TO_1P"); redeemFeeRate = newRedeemFeeRate; emit RedeemFeeRateChanged(redeemFeeRate); } /** * @notice Treasury address. * * @param newTreasury new treasury address. */ function setTreasury(address newTreasury) external onlyRole(POOL_MANAGER_ROLE) { require(newTreasury != address(0), "SET_UP_TO_ZERO_ADDR"); treasury = newTreasury; emit TreasuryChanged(treasury); } /** * @notice Oracle address. * * @param newOracle new Oracle address. */ function setOracle(address newOracle) external onlyRole(POOL_MANAGER_ROLE) { require(newOracle != address(0), "SET_UP_TO_ZERO_ADDR"); oracle = ISPCTPriceOracle(newOracle); emit OracleChanged(newOracle); } // override to allow pausing function _debit(uint256 _amountLD, uint256 _minAmountLD, uint32 _dstEid) internal override whenNotPaused returns (uint256 amountSentLD, uint256 amountReceivedLD) { return super._debit(_amountLD, _minAmountLD, _dstEid); } // override to allow pausing function _credit(address _to, uint256 _amountLD, uint32 _srcEid) internal override whenNotPaused returns (uint256 amountReceivedLD) { return super._credit(_to, _amountLD, _srcEid); } /* -------------------------------------------------------------------------- */ /* Ownable2Step */ /* -------------------------------------------------------------------------- */ /** * @dev Returns the address of the pending owner. */ function pendingOwner() public view returns (address) { return _pendingOwner; } /** * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one. * Can only be called by the current owner. */ function transferOwnership(address newOwner) public override onlyOwner { _pendingOwner = newOwner; emit OwnershipTransferStarted(owner(), newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner. * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal override { delete _pendingOwner; super._transferOwnership(newOwner); } /** * @dev The new owner accepts the ownership transfer. */ function acceptOwnership() public { address sender = _msgSender(); if (pendingOwner() != sender) { revert OwnableUnauthorizedAccount(sender); } _transferOwnership(sender); } /* --------------------------- End of Ownable2Step -------------------------- */ /** * @notice Rescue ERC20 tokens locked up in this contract. * @param token ERC20 token contract address. * @param to recipient address. * @param amount amount to withdraw. */ function rescueERC20(IERC20 token, address to, uint256 amount) external onlyRole(POOL_MANAGER_ROLE) { // If is SPCT, check total pooled amount first. if (address(token) == address(spct)) { require(amount <= spct.balanceOf(address(this)).sub(totalPooledSPCT), "SPCT_RESCUE_AMOUNT_EXCEED_DEBIT"); } token.safeTransfer(to, amount); } }
// 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) (utils/Pausable.sol) pragma solidity ^0.8.20; import {Context} from "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { bool private _paused; /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); /** * @dev The operation failed because the contract is paused. */ error EnforcedPause(); /** * @dev The operation failed because the contract is not paused. */ error ExpectedPause(); /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { if (paused()) { revert EnforcedPause(); } } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { if (!paused()) { revert ExpectedPause(); } } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } }
// 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) (token/ERC20/extensions/ERC20Permit.sol) pragma solidity ^0.8.20; import {IERC20Permit} from "./IERC20Permit.sol"; import {ERC20} from "../ERC20.sol"; import {ECDSA} from "../../../utils/cryptography/ECDSA.sol"; import {EIP712} from "../../../utils/cryptography/EIP712.sol"; import {Nonces} from "../../../utils/Nonces.sol"; /** * @dev Implementation of the 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. */ abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712, Nonces { bytes32 private constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); /** * @dev Permit deadline has expired. */ error ERC2612ExpiredSignature(uint256 deadline); /** * @dev Mismatched signature. */ error ERC2612InvalidSigner(address signer, address owner); /** * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`. * * It's a good idea to use the same `name` that is defined as the ERC20 token name. */ constructor(string memory name) EIP712(name, "1") {} /** * @inheritdoc IERC20Permit */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public virtual { if (block.timestamp > deadline) { revert ERC2612ExpiredSignature(deadline); } bytes32 structHash = keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline)); bytes32 hash = _hashTypedDataV4(structHash); address signer = ECDSA.recover(hash, v, r, s); if (signer != owner) { revert ERC2612InvalidSigner(signer, owner); } _approve(owner, spender, value); } /** * @inheritdoc IERC20Permit */ function nonces(address owner) public view virtual override(IERC20Permit, Nonces) returns (uint256) { return super.nonces(owner); } /** * @inheritdoc IERC20Permit */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view virtual returns (bytes32) { return _domainSeparatorV4(); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol) pragma solidity ^0.8.20; import {Context} from "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * The initial owner is set to the address provided by the deployer. This can * later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; /** * @dev The caller account is not authorized to perform an operation. */ error OwnableUnauthorizedAccount(address account); /** * @dev The owner is not a valid owner account. (eg. `address(0)`) */ error OwnableInvalidOwner(address owner); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the address provided by the deployer as the initial owner. */ constructor(address initialOwner) { if (initialOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(initialOwner); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { if (owner() != _msgSender()) { revert OwnableUnauthorizedAccount(_msgSender()); } } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { if (newOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import { IOFT, OFTCore } from "./OFTCore.sol"; /** * @title OFT Contract * @dev OFT is an ERC-20 token that extends the functionality of the OFTCore contract. */ abstract contract OFT is OFTCore, ERC20 { /** * @dev Constructor for the OFT contract. * @param _name The name of the OFT. * @param _symbol The symbol of the OFT. * @param _lzEndpoint The LayerZero endpoint address. * @param _delegate The delegate capable of making OApp configurations inside of the endpoint. */ constructor( string memory _name, string memory _symbol, address _lzEndpoint, address _delegate ) ERC20(_name, _symbol) OFTCore(decimals(), _lzEndpoint, _delegate) {} /** * @notice Retrieves interfaceID and the version of the OFT. * @return interfaceId The interface ID. * @return version The version. * * @dev interfaceId: This specific interface ID is '0x02e49c2c'. * @dev version: Indicates a cross-chain compatible msg encoding with other OFTs. * @dev If a new feature is added to the OFT cross-chain msg encoding, the version will be incremented. * ie. localOFT version(x,1) CAN send messages to remoteOFT version(x,1) */ function oftVersion() external pure virtual returns (bytes4 interfaceId, uint64 version) { return (type(IOFT).interfaceId, 1); } /** * @dev Retrieves the address of the underlying ERC20 implementation. * @return The address of the OFT token. * * @dev In the case of OFT, address(this) and erc20 are the same contract. */ function token() external view returns (address) { return address(this); } /** * @notice Indicates whether the OFT contract requires approval of the 'token()' to send. * @return requiresApproval Needs approval of the underlying token implementation. * * @dev In the case of OFT where the contract IS the token, approval is NOT required. */ function approvalRequired() external pure virtual returns (bool) { return false; } /** * @dev Burns tokens from the sender's specified balance. * @param _amountLD The amount of tokens to send in local decimals. * @param _minAmountLD The minimum amount to send in local decimals. * @param _dstEid The destination chain ID. * @return amountSentLD The amount sent in local decimals. * @return amountReceivedLD The amount received in local decimals on the remote. */ function _debit( uint256 _amountLD, uint256 _minAmountLD, uint32 _dstEid ) internal virtual override returns (uint256 amountSentLD, uint256 amountReceivedLD) { (amountSentLD, amountReceivedLD) = _debitView(_amountLD, _minAmountLD, _dstEid); // @dev In NON-default OFT, amountSentLD could be 100, with a 10% fee, the amountReceivedLD amount is 90, // therefore amountSentLD CAN differ from amountReceivedLD. // @dev Default OFT burns on src. _burn(msg.sender, amountSentLD); } /** * @dev Credits tokens to the specified address. * @param _to The address to credit the tokens to. * @param _amountLD The amount of tokens to credit in local decimals. * @dev _srcEid The source chain ID. * @return amountReceivedLD The amount of tokens ACTUALLY received in local decimals. */ function _credit( address _to, uint256 _amountLD, uint32 /*_srcEid*/ ) internal virtual override returns (uint256 amountReceivedLD) { // @dev Default OFT mints on dst. _mint(_to, _amountLD); // @dev In the case of NON-default OFT, the _amountLD MIGHT not be == amountReceivedLD. return _amountLD; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/math/SafeMath.sol) pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler * now has built in overflow checking. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ 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. * * _Available since v3.4._ */ 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. * * _Available since v3.4._ */ 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. * * _Available since v3.4._ */ 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. * * _Available since v3.4._ */ 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 addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.21; interface ISPCTPool { error AccessControlBadConfirmation(); error AccessControlUnauthorizedAccount(address account, bytes32 neededRole); error AddressEmptyCode(address target); error AddressInsufficientBalance(address account); error ECDSAInvalidSignature(); error ECDSAInvalidSignatureLength(uint256 length); error ECDSAInvalidSignatureS(bytes32 s); error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed); error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed); error ERC20InvalidApprover(address approver); error ERC20InvalidReceiver(address receiver); error ERC20InvalidSender(address sender); error ERC20InvalidSpender(address spender); error ERC2612ExpiredSignature(uint256 deadline); error ERC2612InvalidSigner(address signer, address owner); error EnforcedPause(); error ExpectedPause(); error FailedInnerCall(); error InvalidAccountNonce(address account, uint256 currentNonce); error InvalidShortString(); error SafeERC20FailedOperation(address token); error StringTooLong(string str); event Approval(address indexed owner, address indexed spender, uint256 value); event Deposit(address indexed user, uint256 indexed amount); event EIP712DomainChanged(); event Execute(uint256 indexed amount); event MintFeeRateChanged(uint256 indexed newFeeRate); event Paused(address account); event Redeem(address indexed user, uint256 indexed amount); event RedeemFeeRateChanged(uint256 indexed newFeeRate); event Repay(uint256 indexed amount); event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); event Transfer(address indexed from, address indexed to, uint256 value); event TreasuryChanged(address newTreasury); event Unpaused(address account); function DEFAULT_ADMIN_ROLE() external view returns (bytes32); function DOMAIN_SEPARATOR() external view returns (bytes32); function FEE_COEFFICIENT() external view returns (uint256); function POOL_MANAGER_ROLE() external view returns (bytes32); function addBatchToWhitelist(address[] memory _users) external; function addToWhitelist(address _user) external; function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 value) external returns (bool); function balanceOf(address account) external view returns (uint256); function decimals() external view returns (uint8); function deposit(uint256 _amount) external; function depositByFiat(address _user, uint256 _amount) external; function eip712Domain() external view returns ( bytes1 fields, string memory name, string memory version, uint256 chainId, address verifyingContract, bytes32 salt, uint256[] memory extensions ); function execute(uint256 _amount) external; function executedUSD() external view returns (uint256); function getRoleAdmin(bytes32 role) external view returns (bytes32); function grantRole(bytes32 role, address account) external; function hasRole(bytes32 role, address account) external view returns (bool); function isWhitelist(address _user) external view returns (bool); function maxMintFeeRate() external view returns (uint256); function maxRedeemFeeRate() external view returns (uint256); function mintFeeRate() external view returns (uint256); function name() external view returns (string memory); function nonces(address owner) external view returns (uint256); function pause() external; function paused() external view returns (bool); function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external; function redeem(uint256 _amount) external; function redeemByFiat(address _user, uint256 _amount) external; function redeemFeeRate() external view returns (uint256); function removeBatchFromWhitelist(address[] memory _users) external; function removeFromWhitelist(address _user) external; function renounceRole(bytes32 role, address callerConfirmation) external; function repay(uint256 _amount) external; function rescueERC20(address token, address to, uint256 amount) external; function reserveUSD() external view returns (uint256); function revokeRole(bytes32 role, address account) external; function setMintFeeRate(uint256 newMintFeeRate) external; function setRedeemFeeRate(uint256 newRedeemFeeRate) external; function setTreasury(address newTreasury) external; function supportsInterface(bytes4 interfaceId) external view returns (bool); function symbol() external view returns (string memory); function totalPooledUSD() external view returns (uint256); function totalSupply() external view returns (uint256); function transfer(address to, uint256 value) external returns (bool); function transferFrom(address from, address to, uint256 value) external returns (bool); function treasury() external view returns (address); function unpause() external; function usdc() external view returns (address); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.21; interface ISPCTPriceOracle { function SPCT_USD_ORACLE_ADDRESS() external view returns (address); function getPrice() external view returns (uint256); function heartbeat() external view returns (uint256); }
// 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 v5.0.1) (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) (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/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) (utils/Address.sol) pragma solidity ^0.8.20; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev The ETH balance of the account is not enough to perform the operation. */ error AddressInsufficientBalance(address account); /** * @dev There's no code at `target` (it is not a contract). */ error AddressEmptyCode(address target); /** * @dev A call to an address target failed. The target may have reverted. */ error FailedInnerCall(); /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { if (address(this).balance < amount) { revert AddressInsufficientBalance(address(this)); } (bool success, ) = recipient.call{value: amount}(""); if (!success) { revert FailedInnerCall(); } } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason or custom error, it is bubbled * up by this function (like regular Solidity function calls). However, if * the call reverted with no returned reason, this function reverts with a * {FailedInnerCall} error. * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { if (address(this).balance < value) { revert AddressInsufficientBalance(address(this)); } (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an * unsuccessful call. */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata ) internal view returns (bytes memory) { if (!success) { _revert(returndata); } else { // only check if target is a contract if the call was successful and the return data is empty // otherwise we already know that it was a contract if (returndata.length == 0 && target.code.length == 0) { revert AddressEmptyCode(target); } return returndata; } } /** * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the * revert reason or with a default {FailedInnerCall} error. */ function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) { if (!success) { _revert(returndata); } else { return returndata; } } /** * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}. */ function _revert(bytes memory returndata) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert FailedInnerCall(); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "./IERC20.sol"; import {IERC20Metadata} from "./extensions/IERC20Metadata.sol"; import {Context} from "../../utils/Context.sol"; import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * * TIP: For a detailed writeup see our guide * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * The default value of {decimals} is 18. To change this, you should override * this function so it returns a different value. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. */ abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors { mapping(address account => uint256) private _balances; mapping(address account => mapping(address spender => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the default value returned by this function, unless * it's overridden. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `value`. */ function transfer(address to, uint256 value) public virtual returns (bool) { address owner = _msgSender(); _transfer(owner, to, value); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 value) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, value); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `value`. * - the caller must have allowance for ``from``'s tokens of at least * `value`. */ function transferFrom(address from, address to, uint256 value) public virtual returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, value); _transfer(from, to, value); return true; } /** * @dev Moves a `value` amount of tokens from `from` to `to`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * NOTE: This function is not virtual, {_update} should be overridden instead. */ function _transfer(address from, address to, uint256 value) internal { if (from == address(0)) { revert ERC20InvalidSender(address(0)); } if (to == address(0)) { revert ERC20InvalidReceiver(address(0)); } _update(from, to, value); } /** * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from` * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding * this function. * * Emits a {Transfer} event. */ function _update(address from, address to, uint256 value) internal virtual { if (from == address(0)) { // Overflow check required: The rest of the code assumes that totalSupply never overflows _totalSupply += value; } else { uint256 fromBalance = _balances[from]; if (fromBalance < value) { revert ERC20InsufficientBalance(from, fromBalance, value); } unchecked { // Overflow not possible: value <= fromBalance <= totalSupply. _balances[from] = fromBalance - value; } } if (to == address(0)) { unchecked { // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply. _totalSupply -= value; } } else { unchecked { // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256. _balances[to] += value; } } emit Transfer(from, to, value); } /** * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0). * Relies on the `_update` mechanism * * Emits a {Transfer} event with `from` set to the zero address. * * NOTE: This function is not virtual, {_update} should be overridden instead. */ function _mint(address account, uint256 value) internal { if (account == address(0)) { revert ERC20InvalidReceiver(address(0)); } _update(address(0), account, value); } /** * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply. * Relies on the `_update` mechanism. * * Emits a {Transfer} event with `to` set to the zero address. * * NOTE: This function is not virtual, {_update} should be overridden instead */ function _burn(address account, uint256 value) internal { if (account == address(0)) { revert ERC20InvalidSender(address(0)); } _update(account, address(0), value); } /** * @dev Sets `value` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. * * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument. */ function _approve(address owner, address spender, uint256 value) internal { _approve(owner, spender, value, true); } /** * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event. * * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any * `Approval` event during `transferFrom` operations. * * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to * true using the following override: * ``` * function _approve(address owner, address spender, uint256 value, bool) internal virtual override { * super._approve(owner, spender, value, true); * } * ``` * * Requirements are the same as {_approve}. */ function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual { if (owner == address(0)) { revert ERC20InvalidApprover(address(0)); } if (spender == address(0)) { revert ERC20InvalidSpender(address(0)); } _allowances[owner][spender] = value; if (emitEvent) { emit Approval(owner, spender, value); } } /** * @dev Updates `owner` s allowance for `spender` based on spent `value`. * * Does not update the allowance value in case of infinite allowance. * Revert if not enough allowance is available. * * Does not emit an {Approval} event. */ function _spendAllowance(address owner, address spender, uint256 value) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { if (currentAllowance < value) { revert ERC20InsufficientAllowance(spender, currentAllowance, value); } unchecked { _approve(owner, spender, currentAllowance - value, false); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.20; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS } /** * @dev The signature derives the `address(0)`. */ error ECDSAInvalidSignature(); /** * @dev The signature has an invalid length. */ error ECDSAInvalidSignatureLength(uint256 length); /** * @dev The signature has an S value that is in the upper half order. */ error ECDSAInvalidSignatureS(bytes32 s); /** * @dev Returns the address that signed a hashed message (`hash`) with `signature` or an error. This will not * return address(0) without also returning an error description. Errors are documented using an enum (error type) * and a bytes32 providing additional information about the error. * * If no error is returned, then the address can be used for verification purposes. * * The `ecrecover` EVM precompile allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError, bytes32) { if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else { return (address(0), RecoverError.InvalidSignatureLength, bytes32(signature.length)); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM precompile allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, signature); _throwError(error, errorArg); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] */ function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError, bytes32) { unchecked { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); // We do not check for an overflow here since the shift operation results in 0 or 1. uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. */ function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) { (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, r, vs); _throwError(error, errorArg); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError, bytes32) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS, s); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature, bytes32(0)); } return (signer, RecoverError.NoError, bytes32(0)); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) { (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, v, r, s); _throwError(error, errorArg); return recovered; } /** * @dev Optionally reverts with the corresponding custom error according to the `error` argument provided. */ function _throwError(RecoverError error, bytes32 errorArg) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert ECDSAInvalidSignature(); } else if (error == RecoverError.InvalidSignatureLength) { revert ECDSAInvalidSignatureLength(uint256(errorArg)); } else if (error == RecoverError.InvalidSignatureS) { revert ECDSAInvalidSignatureS(errorArg); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/EIP712.sol) pragma solidity ^0.8.20; import {MessageHashUtils} from "./MessageHashUtils.sol"; import {ShortStrings, ShortString} from "../ShortStrings.sol"; import {IERC5267} from "../../interfaces/IERC5267.sol"; /** * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data. * * The encoding scheme specified in the EIP requires a domain separator and a hash of the typed structured data, whose * encoding is very generic and therefore its implementation in Solidity is not feasible, thus this contract * does not implement the encoding itself. Protocols need to implement the type-specific encoding they need in order to * produce the hash of their typed data using a combination of `abi.encode` and `keccak256`. * * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA * ({_hashTypedDataV4}). * * The implementation of the domain separator was designed to be as efficient as possible while still properly updating * the chain id to protect against replay attacks on an eventual fork of the chain. * * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask]. * * NOTE: In the upgradeable version of this contract, the cached values will correspond to the address, and the domain * separator of the implementation contract. This will cause the {_domainSeparatorV4} function to always rebuild the * separator from the immutable values, which is cheaper than accessing a cached version in cold storage. * * @custom:oz-upgrades-unsafe-allow state-variable-immutable */ abstract contract EIP712 is IERC5267 { using ShortStrings for *; bytes32 private constant TYPE_HASH = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"); // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to // invalidate the cached domain separator if the chain id changes. bytes32 private immutable _cachedDomainSeparator; uint256 private immutable _cachedChainId; address private immutable _cachedThis; bytes32 private immutable _hashedName; bytes32 private immutable _hashedVersion; ShortString private immutable _name; ShortString private immutable _version; string private _nameFallback; string private _versionFallback; /** * @dev Initializes the domain separator and parameter caches. * * The meaning of `name` and `version` is specified in * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]: * * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol. * - `version`: the current major version of the signing domain. * * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart * contract upgrade]. */ constructor(string memory name, string memory version) { _name = name.toShortStringWithFallback(_nameFallback); _version = version.toShortStringWithFallback(_versionFallback); _hashedName = keccak256(bytes(name)); _hashedVersion = keccak256(bytes(version)); _cachedChainId = block.chainid; _cachedDomainSeparator = _buildDomainSeparator(); _cachedThis = address(this); } /** * @dev Returns the domain separator for the current chain. */ function _domainSeparatorV4() internal view returns (bytes32) { if (address(this) == _cachedThis && block.chainid == _cachedChainId) { return _cachedDomainSeparator; } else { return _buildDomainSeparator(); } } function _buildDomainSeparator() private view returns (bytes32) { return keccak256(abi.encode(TYPE_HASH, _hashedName, _hashedVersion, block.chainid, address(this))); } /** * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this * function returns the hash of the fully encoded EIP712 message for this domain. * * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example: * * ```solidity * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode( * keccak256("Mail(address to,string contents)"), * mailTo, * keccak256(bytes(mailContents)) * ))); * address signer = ECDSA.recover(digest, signature); * ``` */ function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) { return MessageHashUtils.toTypedDataHash(_domainSeparatorV4(), structHash); } /** * @dev See {IERC-5267}. */ function eip712Domain() public view virtual returns ( bytes1 fields, string memory name, string memory version, uint256 chainId, address verifyingContract, bytes32 salt, uint256[] memory extensions ) { return ( hex"0f", // 01111 _EIP712Name(), _EIP712Version(), block.chainid, address(this), bytes32(0), new uint256[](0) ); } /** * @dev The name parameter for the EIP712 domain. * * NOTE: By default this function reads _name which is an immutable value. * It only reads from storage if necessary (in case the value is too large to fit in a ShortString). */ // solhint-disable-next-line func-name-mixedcase function _EIP712Name() internal view returns (string memory) { return _name.toStringWithFallback(_nameFallback); } /** * @dev The version parameter for the EIP712 domain. * * NOTE: By default this function reads _version which is an immutable value. * It only reads from storage if necessary (in case the value is too large to fit in a ShortString). */ // solhint-disable-next-line func-name-mixedcase function _EIP712Version() internal view returns (string memory) { return _version.toStringWithFallback(_versionFallback); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Nonces.sol) pragma solidity ^0.8.20; /** * @dev Provides tracking nonces for addresses. Nonces will only increment. */ abstract contract Nonces { /** * @dev The nonce used for an `account` is not the expected current nonce. */ error InvalidAccountNonce(address account, uint256 currentNonce); mapping(address account => uint256) private _nonces; /** * @dev Returns the next unused nonce for an address. */ function nonces(address owner) public view virtual returns (uint256) { return _nonces[owner]; } /** * @dev Consumes a nonce. * * Returns the current value and increments nonce. */ function _useNonce(address owner) internal virtual returns (uint256) { // For each account, the nonce has an initial value of 0, can only be incremented by one, and cannot be // decremented or reset. This guarantees that the nonce never overflows. unchecked { // It is important to do x++ and not ++x here. return _nonces[owner]++; } } /** * @dev Same as {_useNonce} but checking that `nonce` is the next valid for `owner`. */ function _useCheckedNonce(address owner, uint256 nonce) internal virtual { uint256 current = _useNonce(owner); if (nonce != current) { revert InvalidAccountNonce(owner, current); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import { OApp, Origin } from "../oapp/OApp.sol"; import { OAppOptionsType3 } from "../oapp/libs/OAppOptionsType3.sol"; import { IOAppMsgInspector } from "../oapp/interfaces/IOAppMsgInspector.sol"; import { OAppPreCrimeSimulator } from "../precrime/OAppPreCrimeSimulator.sol"; import { IOFT, SendParam, OFTLimit, OFTReceipt, OFTFeeDetail, MessagingReceipt, MessagingFee } from "./interfaces/IOFT.sol"; import { OFTMsgCodec } from "./libs/OFTMsgCodec.sol"; import { OFTComposeMsgCodec } from "./libs/OFTComposeMsgCodec.sol"; /** * @title OFTCore * @dev Abstract contract for the OftChain (OFT) token. */ abstract contract OFTCore is IOFT, OApp, OAppPreCrimeSimulator, OAppOptionsType3 { using OFTMsgCodec for bytes; using OFTMsgCodec for bytes32; // @notice Provides a conversion rate when swapping between denominations of SD and LD // - shareDecimals == SD == shared Decimals // - localDecimals == LD == local decimals // @dev Considers that tokens have different decimal amounts on various chains. // @dev eg. // For a token // - locally with 4 decimals --> 1.2345 => uint(12345) // - remotely with 2 decimals --> 1.23 => uint(123) // - The conversion rate would be 10 ** (4 - 2) = 100 // @dev If you want to send 1.2345 -> (uint 12345), you CANNOT represent that value on the remote, // you can only display 1.23 -> uint(123). // @dev To preserve the dust that would otherwise be lost on that conversion, // we need to unify a denomination that can be represented on ALL chains inside of the OFT mesh uint256 public immutable decimalConversionRate; // @notice Msg types that are used to identify the various OFT operations. // @dev This can be extended in child contracts for non-default oft operations // @dev These values are used in things like combineOptions() in OAppOptionsType3.sol. uint16 public constant SEND = 1; uint16 public constant SEND_AND_CALL = 2; // Address of an optional contract to inspect both 'message' and 'options' address public msgInspector; event MsgInspectorSet(address inspector); /** * @dev Constructor. * @param _localDecimals The decimals of the token on the local chain (this chain). * @param _endpoint The address of the LayerZero endpoint. * @param _delegate The delegate capable of making OApp configurations inside of the endpoint. */ constructor(uint8 _localDecimals, address _endpoint, address _delegate) OApp(_endpoint, _delegate) { if (_localDecimals < sharedDecimals()) revert InvalidLocalDecimals(); decimalConversionRate = 10 ** (_localDecimals - sharedDecimals()); } /** * @dev Retrieves the shared decimals of the OFT. * @return The shared decimals of the OFT. * * @dev Sets an implicit cap on the amount of tokens, over uint64.max() will need some sort of outbound cap / totalSupply cap * Lowest common decimal denominator between chains. * Defaults to 6 decimal places to provide up to 18,446,744,073,709.551615 units (max uint64). * For tokens exceeding this totalSupply(), they will need to override the sharedDecimals function with something smaller. * ie. 4 sharedDecimals would be 1,844,674,407,370,955.1615 */ function sharedDecimals() public pure virtual returns (uint8) { return 6; } /** * @dev Sets the message inspector address for the OFT. * @param _msgInspector The address of the message inspector. * * @dev This is an optional contract that can be used to inspect both 'message' and 'options'. * @dev Set it to address(0) to disable it, or set it to a contract address to enable it. */ function setMsgInspector(address _msgInspector) public virtual onlyOwner { msgInspector = _msgInspector; emit MsgInspectorSet(_msgInspector); } /** * @notice Provides a quote for OFT-related operations. * @param _sendParam The parameters for the send operation. * @return oftLimit The OFT limit information. * @return oftFeeDetails The details of OFT fees. * @return oftReceipt The OFT receipt information. */ function quoteOFT( SendParam calldata _sendParam ) external view virtual returns (OFTLimit memory oftLimit, OFTFeeDetail[] memory oftFeeDetails, OFTReceipt memory oftReceipt) { uint256 minAmountLD = 0; // Unused in the default implementation. uint256 maxAmountLD = type(uint64).max; // Unused in the default implementation. oftLimit = OFTLimit(minAmountLD, maxAmountLD); // Unused in the default implementation; reserved for future complex fee details. oftFeeDetails = new OFTFeeDetail[](0); // @dev This is the same as the send() operation, but without the actual send. // - amountSentLD is the amount in local decimals that would be sent from the sender. // - amountReceivedLD is the amount in local decimals that will be credited to the recipient on the remote OFT instance. // @dev The amountSentLD MIGHT not equal the amount the user actually receives. HOWEVER, the default does. (uint256 amountSentLD, uint256 amountReceivedLD) = _debitView( _sendParam.amountLD, _sendParam.minAmountLD, _sendParam.dstEid ); oftReceipt = OFTReceipt(amountSentLD, amountReceivedLD); } /** * @notice Provides a quote for the send() operation. * @param _sendParam The parameters for the send() operation. * @param _payInLzToken Flag indicating whether the caller is paying in the LZ token. * @return msgFee The calculated LayerZero messaging fee from the send() operation. * * @dev MessagingFee: LayerZero msg fee * - nativeFee: The native fee. * - lzTokenFee: The lzToken fee. */ function quoteSend( SendParam calldata _sendParam, bool _payInLzToken ) external view virtual returns (MessagingFee memory msgFee) { // @dev mock the amount to receive, this is the same operation used in the send(). // The quote is as similar as possible to the actual send() operation. (, uint256 amountReceivedLD) = _debitView(_sendParam.amountLD, _sendParam.minAmountLD, _sendParam.dstEid); // @dev Builds the options and OFT message to quote in the endpoint. (bytes memory message, bytes memory options) = _buildMsgAndOptions(_sendParam, amountReceivedLD); // @dev Calculates the LayerZero fee for the send() operation. return _quote(_sendParam.dstEid, message, options, _payInLzToken); } /** * @dev Executes the send operation. * @param _sendParam The parameters for the send operation. * @param _fee The calculated fee for the send() operation. * - nativeFee: The native fee. * - lzTokenFee: The lzToken fee. * @param _refundAddress The address to receive any excess funds. * @return msgReceipt The receipt for the send operation. * @return oftReceipt The OFT receipt information. * * @dev MessagingReceipt: LayerZero msg receipt * - guid: The unique identifier for the sent message. * - nonce: The nonce of the sent message. * - fee: The LayerZero fee incurred for the message. */ function send( SendParam calldata _sendParam, MessagingFee calldata _fee, address _refundAddress ) external payable virtual returns (MessagingReceipt memory msgReceipt, OFTReceipt memory oftReceipt) { // @dev Applies the token transfers regarding this send() operation. // - amountSentLD is the amount in local decimals that was ACTUALLY sent/debited from the sender. // - amountReceivedLD is the amount in local decimals that will be received/credited to the recipient on the remote OFT instance. (uint256 amountSentLD, uint256 amountReceivedLD) = _debit( _sendParam.amountLD, _sendParam.minAmountLD, _sendParam.dstEid ); // @dev Builds the options and OFT message to quote in the endpoint. (bytes memory message, bytes memory options) = _buildMsgAndOptions(_sendParam, amountReceivedLD); // @dev Sends the message to the LayerZero endpoint and returns the LayerZero msg receipt. msgReceipt = _lzSend(_sendParam.dstEid, message, options, _fee, _refundAddress); // @dev Formulate the OFT receipt. oftReceipt = OFTReceipt(amountSentLD, amountReceivedLD); emit OFTSent(msgReceipt.guid, _sendParam.dstEid, msg.sender, amountSentLD, amountReceivedLD); } /** * @dev Internal function to build the message and options. * @param _sendParam The parameters for the send() operation. * @param _amountLD The amount in local decimals. * @return message The encoded message. * @return options The encoded options. */ function _buildMsgAndOptions( SendParam calldata _sendParam, uint256 _amountLD ) internal view virtual returns (bytes memory message, bytes memory options) { bool hasCompose; // @dev This generated message has the msg.sender encoded into the payload so the remote knows who the caller is. (message, hasCompose) = OFTMsgCodec.encode( _sendParam.to, _toSD(_amountLD), // @dev Must be include a non empty bytes if you want to compose, EVEN if you dont need it on the remote. // EVEN if you dont require an arbitrary payload to be sent... eg. '0x01' _sendParam.composeMsg ); // @dev Change the msg type depending if its composed or not. uint16 msgType = hasCompose ? SEND_AND_CALL : SEND; // @dev Combine the callers _extraOptions with the enforced options via the OAppOptionsType3. options = combineOptions(_sendParam.dstEid, msgType, _sendParam.extraOptions); // @dev Optionally inspect the message and options depending if the OApp owner has set a msg inspector. // @dev If it fails inspection, needs to revert in the implementation. ie. does not rely on return boolean if (msgInspector != address(0)) IOAppMsgInspector(msgInspector).inspect(message, options); } /** * @dev Internal function to handle the receive on the LayerZero endpoint. * @param _origin The origin information. * - srcEid: The source chain endpoint ID. * - sender: The sender address from the src chain. * - nonce: The nonce of the LayerZero message. * @param _guid The unique identifier for the received LayerZero message. * @param _message The encoded message. * @dev _executor The address of the executor. * @dev _extraData Additional data. */ function _lzReceive( Origin calldata _origin, bytes32 _guid, bytes calldata _message, address /*_executor*/, // @dev unused in the default implementation. bytes calldata /*_extraData*/ // @dev unused in the default implementation. ) internal virtual override { // @dev The src sending chain doesnt know the address length on this chain (potentially non-evm) // Thus everything is bytes32() encoded in flight. address toAddress = _message.sendTo().bytes32ToAddress(); // @dev Credit the amountLD to the recipient and return the ACTUAL amount the recipient received in local decimals uint256 amountReceivedLD = _credit(toAddress, _toLD(_message.amountSD()), _origin.srcEid); if (_message.isComposed()) { // @dev Proprietary composeMsg format for the OFT. bytes memory composeMsg = OFTComposeMsgCodec.encode( _origin.nonce, _origin.srcEid, amountReceivedLD, _message.composeMsg() ); // @dev Stores the lzCompose payload that will be executed in a separate tx. // Standardizes functionality for executing arbitrary contract invocation on some non-evm chains. // @dev The off-chain executor will listen and process the msg based on the src-chain-callers compose options passed. // @dev The index is used when a OApp needs to compose multiple msgs on lzReceive. // For default OFT implementation there is only 1 compose msg per lzReceive, thus its always 0. endpoint.sendCompose(toAddress, _guid, 0 /* the index of the composed message*/, composeMsg); } emit OFTReceived(_guid, _origin.srcEid, toAddress, amountReceivedLD); } /** * @dev Internal function to handle the OAppPreCrimeSimulator simulated receive. * @param _origin The origin information. * - srcEid: The source chain endpoint ID. * - sender: The sender address from the src chain. * - nonce: The nonce of the LayerZero message. * @param _guid The unique identifier for the received LayerZero message. * @param _message The LayerZero message. * @param _executor The address of the off-chain executor. * @param _extraData Arbitrary data passed by the msg executor. * * @dev Enables the preCrime simulator to mock sending lzReceive() messages, * routes the msg down from the OAppPreCrimeSimulator, and back up to the OAppReceiver. */ function _lzReceiveSimulate( Origin calldata _origin, bytes32 _guid, bytes calldata _message, address _executor, bytes calldata _extraData ) internal virtual override { _lzReceive(_origin, _guid, _message, _executor, _extraData); } /** * @dev Check if the peer is considered 'trusted' by the OApp. * @param _eid The endpoint ID to check. * @param _peer The peer to check. * @return Whether the peer passed is considered 'trusted' by the OApp. * * @dev Enables OAppPreCrimeSimulator to check whether a potential Inbound Packet is from a trusted source. */ function isPeer(uint32 _eid, bytes32 _peer) public view virtual override returns (bool) { return peers[_eid] == _peer; } /** * @dev Internal function to remove dust from the given local decimal amount. * @param _amountLD The amount in local decimals. * @return amountLD The amount after removing dust. * * @dev Prevents the loss of dust when moving amounts between chains with different decimals. * @dev eg. uint(123) with a conversion rate of 100 becomes uint(100). */ function _removeDust(uint256 _amountLD) internal view virtual returns (uint256 amountLD) { return (_amountLD / decimalConversionRate) * decimalConversionRate; } /** * @dev Internal function to convert an amount from shared decimals into local decimals. * @param _amountSD The amount in shared decimals. * @return amountLD The amount in local decimals. */ function _toLD(uint64 _amountSD) internal view virtual returns (uint256 amountLD) { return _amountSD * decimalConversionRate; } /** * @dev Internal function to convert an amount from local decimals into shared decimals. * @param _amountLD The amount in local decimals. * @return amountSD The amount in shared decimals. */ function _toSD(uint256 _amountLD) internal view virtual returns (uint64 amountSD) { return uint64(_amountLD / decimalConversionRate); } /** * @dev Internal function to mock the amount mutation from a OFT debit() operation. * @param _amountLD The amount to send in local decimals. * @param _minAmountLD The minimum amount to send in local decimals. * @dev _dstEid The destination endpoint ID. * @return amountSentLD The amount sent, in local decimals. * @return amountReceivedLD The amount to be received on the remote chain, in local decimals. * * @dev This is where things like fees would be calculated and deducted from the amount to be received on the remote. */ function _debitView( uint256 _amountLD, uint256 _minAmountLD, uint32 /*_dstEid*/ ) internal view virtual returns (uint256 amountSentLD, uint256 amountReceivedLD) { // @dev Remove the dust so nothing is lost on the conversion between chains with different decimals for the token. amountSentLD = _removeDust(_amountLD); // @dev The amount to send is the same as amount received in the default implementation. amountReceivedLD = amountSentLD; // @dev Check for slippage. if (amountReceivedLD < _minAmountLD) { revert SlippageExceeded(amountReceivedLD, _minAmountLD); } } /** * @dev Internal function to perform a debit operation. * @param _amountLD The amount to send in local decimals. * @param _minAmountLD The minimum amount to send in local decimals. * @param _dstEid The destination endpoint ID. * @return amountSentLD The amount sent in local decimals. * @return amountReceivedLD The amount received in local decimals on the remote. * * @dev Defined here but are intended to be overriden depending on the OFT implementation. * @dev Depending on OFT implementation the _amountLD could differ from the amountReceivedLD. */ function _debit( uint256 _amountLD, uint256 _minAmountLD, uint32 _dstEid ) internal virtual returns (uint256 amountSentLD, uint256 amountReceivedLD); /** * @dev Internal function to perform a credit operation. * @param _to The address to credit. * @param _amountLD The amount to credit in local decimals. * @param _srcEid The source endpoint ID. * @return amountReceivedLD The amount ACTUALLY received in local decimals. * * @dev Defined here but are intended to be overriden depending on the OFT implementation. * @dev Depending on OFT implementation the _amountLD could differ from the amountReceivedLD. */ function _credit( address _to, uint256 _amountLD, uint32 _srcEid ) internal virtual returns (uint256 amountReceivedLD); }
// 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) (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol) pragma solidity ^0.8.20; /** * @dev Standard ERC20 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens. */ interface IERC20Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC20InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC20InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers. * @param spender Address that may be allowed to operate on tokens without being their owner. * @param allowance Amount of tokens a `spender` is allowed to operate with. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC20InvalidApprover(address approver); /** * @dev Indicates a failure with the `spender` to be approved. Used in approvals. * @param spender Address that may be allowed to operate on tokens without being their owner. */ error ERC20InvalidSpender(address spender); } /** * @dev Standard ERC721 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens. */ interface IERC721Errors { /** * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. * Used in balance queries. * @param owner Address of the current owner of a token. */ error ERC721InvalidOwner(address owner); /** * @dev Indicates a `tokenId` whose `owner` is the zero address. * @param tokenId Identifier number of a token. */ error ERC721NonexistentToken(uint256 tokenId); /** * @dev Indicates an error related to the ownership over a particular token. Used in transfers. * @param sender Address whose tokens are being transferred. * @param tokenId Identifier number of a token. * @param owner Address of the current owner of a token. */ error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC721InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC721InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param tokenId Identifier number of a token. */ error ERC721InsufficientApproval(address operator, uint256 tokenId); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC721InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC721InvalidOperator(address operator); } /** * @dev Standard ERC1155 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens. */ interface IERC1155Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. * @param tokenId Identifier number of a token. */ error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC1155InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC1155InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param owner Address of the current owner of a token. */ error ERC1155MissingApprovalForAll(address operator, address owner); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC1155InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC1155InvalidOperator(address operator); /** * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation. * Used in batch transfers. * @param idsLength Length of the array of token identifiers * @param valuesLength Length of the array of token amounts */ error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/MessageHashUtils.sol) pragma solidity ^0.8.20; import {Strings} from "../Strings.sol"; /** * @dev Signature message hash utilities for producing digests to be consumed by {ECDSA} recovery or signing. * * The library provides methods for generating a hash of a message that conforms to the * https://eips.ethereum.org/EIPS/eip-191[EIP 191] and https://eips.ethereum.org/EIPS/eip-712[EIP 712] * specifications. */ library MessageHashUtils { /** * @dev Returns the keccak256 digest of an EIP-191 signed data with version * `0x45` (`personal_sign` messages). * * The digest is calculated by prefixing a bytes32 `messageHash` with * `"\x19Ethereum Signed Message:\n32"` and hashing the result. It corresponds with the * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method. * * NOTE: The `messageHash` parameter is intended to be the result of hashing a raw message with * keccak256, although any bytes32 value can be safely used because the final digest will * be re-hashed. * * See {ECDSA-recover}. */ function toEthSignedMessageHash(bytes32 messageHash) internal pure returns (bytes32 digest) { /// @solidity memory-safe-assembly assembly { mstore(0x00, "\x19Ethereum Signed Message:\n32") // 32 is the bytes-length of messageHash mstore(0x1c, messageHash) // 0x1c (28) is the length of the prefix digest := keccak256(0x00, 0x3c) // 0x3c is the length of the prefix (0x1c) + messageHash (0x20) } } /** * @dev Returns the keccak256 digest of an EIP-191 signed data with version * `0x45` (`personal_sign` messages). * * The digest is calculated by prefixing an arbitrary `message` with * `"\x19Ethereum Signed Message:\n" + len(message)` and hashing the result. It corresponds with the * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method. * * See {ECDSA-recover}. */ function toEthSignedMessageHash(bytes memory message) internal pure returns (bytes32) { return keccak256(bytes.concat("\x19Ethereum Signed Message:\n", bytes(Strings.toString(message.length)), message)); } /** * @dev Returns the keccak256 digest of an EIP-191 signed data with version * `0x00` (data with intended validator). * * The digest is calculated by prefixing an arbitrary `data` with `"\x19\x00"` and the intended * `validator` address. Then hashing the result. * * See {ECDSA-recover}. */ function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) { return keccak256(abi.encodePacked(hex"19_00", validator, data)); } /** * @dev Returns the keccak256 digest of an EIP-712 typed data (EIP-191 version `0x01`). * * The digest is calculated from a `domainSeparator` and a `structHash`, by prefixing them with * `\x19\x01` and hashing the result. It corresponds to the hash signed by the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] JSON-RPC method as part of EIP-712. * * See {ECDSA-recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 digest) { /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) mstore(ptr, hex"19_01") mstore(add(ptr, 0x02), domainSeparator) mstore(add(ptr, 0x22), structHash) digest := keccak256(ptr, 0x42) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/ShortStrings.sol) pragma solidity ^0.8.20; import {StorageSlot} from "./StorageSlot.sol"; // | string | 0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA | // | length | 0x BB | type ShortString is bytes32; /** * @dev This library provides functions to convert short memory strings * into a `ShortString` type that can be used as an immutable variable. * * Strings of arbitrary length can be optimized using this library if * they are short enough (up to 31 bytes) by packing them with their * length (1 byte) in a single EVM word (32 bytes). Additionally, a * fallback mechanism can be used for every other case. * * Usage example: * * ```solidity * contract Named { * using ShortStrings for *; * * ShortString private immutable _name; * string private _nameFallback; * * constructor(string memory contractName) { * _name = contractName.toShortStringWithFallback(_nameFallback); * } * * function name() external view returns (string memory) { * return _name.toStringWithFallback(_nameFallback); * } * } * ``` */ library ShortStrings { // Used as an identifier for strings longer than 31 bytes. bytes32 private constant FALLBACK_SENTINEL = 0x00000000000000000000000000000000000000000000000000000000000000FF; error StringTooLong(string str); error InvalidShortString(); /** * @dev Encode a string of at most 31 chars into a `ShortString`. * * This will trigger a `StringTooLong` error is the input string is too long. */ function toShortString(string memory str) internal pure returns (ShortString) { bytes memory bstr = bytes(str); if (bstr.length > 31) { revert StringTooLong(str); } return ShortString.wrap(bytes32(uint256(bytes32(bstr)) | bstr.length)); } /** * @dev Decode a `ShortString` back to a "normal" string. */ function toString(ShortString sstr) internal pure returns (string memory) { uint256 len = byteLength(sstr); // using `new string(len)` would work locally but is not memory safe. string memory str = new string(32); /// @solidity memory-safe-assembly assembly { mstore(str, len) mstore(add(str, 0x20), sstr) } return str; } /** * @dev Return the length of a `ShortString`. */ function byteLength(ShortString sstr) internal pure returns (uint256) { uint256 result = uint256(ShortString.unwrap(sstr)) & 0xFF; if (result > 31) { revert InvalidShortString(); } return result; } /** * @dev Encode a string into a `ShortString`, or write it to storage if it is too long. */ function toShortStringWithFallback(string memory value, string storage store) internal returns (ShortString) { if (bytes(value).length < 32) { return toShortString(value); } else { StorageSlot.getStringSlot(store).value = value; return ShortString.wrap(FALLBACK_SENTINEL); } } /** * @dev Decode a string that was encoded to `ShortString` or written to storage using {setWithFallback}. */ function toStringWithFallback(ShortString value, string storage store) internal pure returns (string memory) { if (ShortString.unwrap(value) != FALLBACK_SENTINEL) { return toString(value); } else { return store; } } /** * @dev Return the length of a string that was encoded to `ShortString` or written to storage using * {setWithFallback}. * * WARNING: This will return the "byte length" of the string. This may not reflect the actual length in terms of * actual characters as the UTF-8 encoding of a single character can span over multiple bytes. */ function byteLengthWithFallback(ShortString value, string storage store) internal view returns (uint256) { if (ShortString.unwrap(value) != FALLBACK_SENTINEL) { return byteLength(value); } else { return bytes(store).length; } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC5267.sol) pragma solidity ^0.8.20; interface IERC5267 { /** * @dev MAY be emitted to signal that the domain could have changed. */ event EIP712DomainChanged(); /** * @dev returns the fields and values that describe the domain separator used by this contract for EIP-712 * signature. */ function eip712Domain() external view returns ( bytes1 fields, string memory name, string memory version, uint256 chainId, address verifyingContract, bytes32 salt, uint256[] memory extensions ); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; // @dev Import the 'MessagingFee' and 'MessagingReceipt' so it's exposed to OApp implementers // solhint-disable-next-line no-unused-import import { OAppSender, MessagingFee, MessagingReceipt } from "./OAppSender.sol"; // @dev Import the 'Origin' so it's exposed to OApp implementers // solhint-disable-next-line no-unused-import import { OAppReceiver, Origin } from "./OAppReceiver.sol"; import { OAppCore } from "./OAppCore.sol"; /** * @title OApp * @dev Abstract contract serving as the base for OApp implementation, combining OAppSender and OAppReceiver functionality. */ abstract contract OApp is OAppSender, OAppReceiver { /** * @dev Constructor to initialize the OApp with the provided endpoint and owner. * @param _endpoint The address of the LOCAL LayerZero endpoint. * @param _delegate The delegate capable of making OApp configurations inside of the endpoint. */ constructor(address _endpoint, address _delegate) OAppCore(_endpoint, _delegate) {} /** * @notice Retrieves the OApp version information. * @return senderVersion The version of the OAppSender.sol implementation. * @return receiverVersion The version of the OAppReceiver.sol implementation. */ function oAppVersion() public pure virtual override(OAppSender, OAppReceiver) returns (uint64 senderVersion, uint64 receiverVersion) { return (SENDER_VERSION, RECEIVER_VERSION); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol"; import { IOAppOptionsType3, EnforcedOptionParam } from "../interfaces/IOAppOptionsType3.sol"; /** * @title OAppOptionsType3 * @dev Abstract contract implementing the IOAppOptionsType3 interface with type 3 options. */ abstract contract OAppOptionsType3 is IOAppOptionsType3, Ownable { uint16 internal constant OPTION_TYPE_3 = 3; // @dev The "msgType" should be defined in the child contract. mapping(uint32 eid => mapping(uint16 msgType => bytes enforcedOption)) public enforcedOptions; /** * @dev Sets the enforced options for specific endpoint and message type combinations. * @param _enforcedOptions An array of EnforcedOptionParam structures specifying enforced options. * * @dev Only the owner/admin of the OApp can call this function. * @dev Provides a way for the OApp to enforce things like paying for PreCrime, AND/OR minimum dst lzReceive gas amounts etc. * @dev These enforced options can vary as the potential options/execution on the remote may differ as per the msgType. * eg. Amount of lzReceive() gas necessary to deliver a lzCompose() message adds overhead you dont want to pay * if you are only making a standard LayerZero message ie. lzReceive() WITHOUT sendCompose(). */ function setEnforcedOptions(EnforcedOptionParam[] calldata _enforcedOptions) public virtual onlyOwner { for (uint256 i = 0; i < _enforcedOptions.length; i++) { // @dev Enforced options are only available for optionType 3, as type 1 and 2 dont support combining. _assertOptionsType3(_enforcedOptions[i].options); enforcedOptions[_enforcedOptions[i].eid][_enforcedOptions[i].msgType] = _enforcedOptions[i].options; } emit EnforcedOptionSet(_enforcedOptions); } /** * @notice Combines options for a given endpoint and message type. * @param _eid The endpoint ID. * @param _msgType The OAPP message type. * @param _extraOptions Additional options passed by the caller. * @return options The combination of caller specified options AND enforced options. * * @dev If there is an enforced lzReceive option: * - {gasLimit: 200k, msg.value: 1 ether} AND a caller supplies a lzReceive option: {gasLimit: 100k, msg.value: 0.5 ether} * - The resulting options will be {gasLimit: 300k, msg.value: 1.5 ether} when the message is executed on the remote lzReceive() function. * @dev This presence of duplicated options is handled off-chain in the verifier/executor. */ function combineOptions( uint32 _eid, uint16 _msgType, bytes calldata _extraOptions ) public view virtual returns (bytes memory) { bytes memory enforced = enforcedOptions[_eid][_msgType]; // No enforced options, pass whatever the caller supplied, even if it's empty or legacy type 1/2 options. if (enforced.length == 0) return _extraOptions; // No caller options, return enforced if (_extraOptions.length == 0) return enforced; // @dev If caller provided _extraOptions, must be type 3 as its the ONLY type that can be combined. if (_extraOptions.length >= 2) { _assertOptionsType3(_extraOptions); // @dev Remove the first 2 bytes containing the type from the _extraOptions and combine with enforced. return bytes.concat(enforced, _extraOptions[2:]); } // No valid set of options was found. revert InvalidOptions(_extraOptions); } /** * @dev Internal function to assert that options are of type 3. * @param _options The options to be checked. */ function _assertOptionsType3(bytes calldata _options) internal pure virtual { uint16 optionsType = uint16(bytes2(_options[0:2])); if (optionsType != OPTION_TYPE_3) revert InvalidOptions(_options); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; /** * @title IOAppMsgInspector * @dev Interface for the OApp Message Inspector, allowing examination of message and options contents. */ interface IOAppMsgInspector { // Custom error message for inspection failure error InspectionFailed(bytes message, bytes options); /** * @notice Allows the inspector to examine LayerZero message contents and optionally throw a revert if invalid. * @param _message The message payload to be inspected. * @param _options Additional options or parameters for inspection. * @return valid A boolean indicating whether the inspection passed (true) or failed (false). * * @dev Optionally done as a revert, OR use the boolean provided to handle the failure. */ function inspect(bytes calldata _message, bytes calldata _options) external view returns (bool valid); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol"; import { IPreCrime } from "./interfaces/IPreCrime.sol"; import { IOAppPreCrimeSimulator, InboundPacket, Origin } from "./interfaces/IOAppPreCrimeSimulator.sol"; /** * @title OAppPreCrimeSimulator * @dev Abstract contract serving as the base for preCrime simulation functionality in an OApp. */ abstract contract OAppPreCrimeSimulator is IOAppPreCrimeSimulator, Ownable { // The address of the preCrime implementation. address public preCrime; /** * @dev Retrieves the address of the OApp contract. * @return The address of the OApp contract. * * @dev The simulator contract is the base contract for the OApp by default. * @dev If the simulator is a separate contract, override this function. */ function oApp() external view virtual returns (address) { return address(this); } /** * @dev Sets the preCrime contract address. * @param _preCrime The address of the preCrime contract. */ function setPreCrime(address _preCrime) public virtual onlyOwner { preCrime = _preCrime; emit PreCrimeSet(_preCrime); } /** * @dev Interface for pre-crime simulations. Always reverts at the end with the simulation results. * @param _packets An array of InboundPacket objects representing received packets to be delivered. * * @dev WARNING: MUST revert at the end with the simulation results. * @dev Gives the preCrime implementation the ability to mock sending packets to the lzReceive function, * WITHOUT actually executing them. */ function lzReceiveAndRevert(InboundPacket[] calldata _packets) public payable virtual { for (uint256 i = 0; i < _packets.length; i++) { InboundPacket calldata packet = _packets[i]; // Ignore packets that are not from trusted peers. if (!isPeer(packet.origin.srcEid, packet.origin.sender)) continue; // @dev Because a verifier is calling this function, it doesnt have access to executor params: // - address _executor // - bytes calldata _extraData // preCrime will NOT work for OApps that rely on these two parameters inside of their _lzReceive(). // They are instead stubbed to default values, address(0) and bytes("") // @dev Calling this.lzReceiveSimulate removes ability for assembly return 0 callstack exit, // which would cause the revert to be ignored. this.lzReceiveSimulate{ value: packet.value }( packet.origin, packet.guid, packet.message, packet.executor, packet.extraData ); } // @dev Revert with the simulation results. msg.sender must implement IPreCrime.buildSimulationResult(). revert SimulationResult(IPreCrime(msg.sender).buildSimulationResult()); } /** * @dev Is effectively an internal function because msg.sender must be address(this). * Allows resetting the call stack for 'internal' calls. * @param _origin The origin information containing the source endpoint and sender address. * - srcEid: The source chain endpoint ID. * - sender: The sender address on the src chain. * - nonce: The nonce of the message. * @param _guid The unique identifier of the packet. * @param _message The message payload of the packet. * @param _executor The executor address for the packet. * @param _extraData Additional data for the packet. */ function lzReceiveSimulate( Origin calldata _origin, bytes32 _guid, bytes calldata _message, address _executor, bytes calldata _extraData ) external payable virtual { // @dev Ensure ONLY can be called 'internally'. if (msg.sender != address(this)) revert OnlySelf(); _lzReceiveSimulate(_origin, _guid, _message, _executor, _extraData); } /** * @dev Internal function to handle the OAppPreCrimeSimulator simulated receive. * @param _origin The origin information. * - srcEid: The source chain endpoint ID. * - sender: The sender address from the src chain. * - nonce: The nonce of the LayerZero message. * @param _guid The GUID of the LayerZero message. * @param _message The LayerZero message. * @param _executor The address of the off-chain executor. * @param _extraData Arbitrary data passed by the msg executor. * * @dev Enables the preCrime simulator to mock sending lzReceive() messages, * routes the msg down from the OAppPreCrimeSimulator, and back up to the OAppReceiver. */ function _lzReceiveSimulate( Origin calldata _origin, bytes32 _guid, bytes calldata _message, address _executor, bytes calldata _extraData ) internal virtual; /** * @dev checks if the specified peer is considered 'trusted' by the OApp. * @param _eid The endpoint Id to check. * @param _peer The peer to check. * @return Whether the peer passed is considered 'trusted' by the OApp. */ function isPeer(uint32 _eid, bytes32 _peer) public view virtual returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import { MessagingReceipt, MessagingFee } from "../../oapp/OAppSender.sol"; /** * @dev Struct representing token parameters for the OFT send() operation. */ struct SendParam { uint32 dstEid; // Destination endpoint ID. bytes32 to; // Recipient address. uint256 amountLD; // Amount to send in local decimals. uint256 minAmountLD; // Minimum amount to send in local decimals. bytes extraOptions; // Additional options supplied by the caller to be used in the LayerZero message. bytes composeMsg; // The composed message for the send() operation. bytes oftCmd; // The OFT command to be executed, unused in default OFT implementations. } /** * @dev Struct representing OFT limit information. * @dev These amounts can change dynamically and are up the the specific oft implementation. */ struct OFTLimit { uint256 minAmountLD; // Minimum amount in local decimals that can be sent to the recipient. uint256 maxAmountLD; // Maximum amount in local decimals that can be sent to the recipient. } /** * @dev Struct representing OFT receipt information. */ struct OFTReceipt { uint256 amountSentLD; // Amount of tokens ACTUALLY debited from the sender in local decimals. // @dev In non-default implementations, the amountReceivedLD COULD differ from this value. uint256 amountReceivedLD; // Amount of tokens to be received on the remote side. } /** * @dev Struct representing OFT fee details. * @dev Future proof mechanism to provide a standardized way to communicate fees to things like a UI. */ struct OFTFeeDetail { int256 feeAmountLD; // Amount of the fee in local decimals. string description; // Description of the fee. } /** * @title IOFT * @dev Interface for the OftChain (OFT) token. * @dev Does not inherit ERC20 to accommodate usage by OFTAdapter as well. * @dev This specific interface ID is '0x02e49c2c'. */ interface IOFT { // Custom error messages error InvalidLocalDecimals(); error SlippageExceeded(uint256 amountLD, uint256 minAmountLD); // Events event OFTSent( bytes32 indexed guid, // GUID of the OFT message. uint32 dstEid, // Destination Endpoint ID. address indexed fromAddress, // Address of the sender on the src chain. uint256 amountSentLD, // Amount of tokens sent in local decimals. uint256 amountReceivedLD // Amount of tokens received in local decimals. ); event OFTReceived( bytes32 indexed guid, // GUID of the OFT message. uint32 srcEid, // Source Endpoint ID. address indexed toAddress, // Address of the recipient on the dst chain. uint256 amountReceivedLD // Amount of tokens received in local decimals. ); /** * @notice Retrieves interfaceID and the version of the OFT. * @return interfaceId The interface ID. * @return version The version. * * @dev interfaceId: This specific interface ID is '0x02e49c2c'. * @dev version: Indicates a cross-chain compatible msg encoding with other OFTs. * @dev If a new feature is added to the OFT cross-chain msg encoding, the version will be incremented. * ie. localOFT version(x,1) CAN send messages to remoteOFT version(x,1) */ function oftVersion() external view returns (bytes4 interfaceId, uint64 version); /** * @notice Retrieves the address of the token associated with the OFT. * @return token The address of the ERC20 token implementation. */ function token() external view returns (address); /** * @notice Indicates whether the OFT contract requires approval of the 'token()' to send. * @return requiresApproval Needs approval of the underlying token implementation. * * @dev Allows things like wallet implementers to determine integration requirements, * without understanding the underlying token implementation. */ function approvalRequired() external view returns (bool); /** * @notice Retrieves the shared decimals of the OFT. * @return sharedDecimals The shared decimals of the OFT. */ function sharedDecimals() external view returns (uint8); /** * @notice Provides a quote for OFT-related operations. * @param _sendParam The parameters for the send operation. * @return limit The OFT limit information. * @return oftFeeDetails The details of OFT fees. * @return receipt The OFT receipt information. */ function quoteOFT( SendParam calldata _sendParam ) external view returns (OFTLimit memory, OFTFeeDetail[] memory oftFeeDetails, OFTReceipt memory); /** * @notice Provides a quote for the send() operation. * @param _sendParam The parameters for the send() operation. * @param _payInLzToken Flag indicating whether the caller is paying in the LZ token. * @return fee The calculated LayerZero messaging fee from the send() operation. * * @dev MessagingFee: LayerZero msg fee * - nativeFee: The native fee. * - lzTokenFee: The lzToken fee. */ function quoteSend(SendParam calldata _sendParam, bool _payInLzToken) external view returns (MessagingFee memory); /** * @notice Executes the send() operation. * @param _sendParam The parameters for the send operation. * @param _fee The fee information supplied by the caller. * - nativeFee: The native fee. * - lzTokenFee: The lzToken fee. * @param _refundAddress The address to receive any excess funds from fees etc. on the src. * @return receipt The LayerZero messaging receipt from the send() operation. * @return oftReceipt The OFT receipt information. * * @dev MessagingReceipt: LayerZero msg receipt * - guid: The unique identifier for the sent message. * - nonce: The nonce of the sent message. * - fee: The LayerZero fee incurred for the message. */ function send( SendParam calldata _sendParam, MessagingFee calldata _fee, address _refundAddress ) external payable returns (MessagingReceipt memory, OFTReceipt memory); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; library OFTMsgCodec { // Offset constants for encoding and decoding OFT messages uint8 private constant SEND_TO_OFFSET = 32; uint8 private constant SEND_AMOUNT_SD_OFFSET = 40; /** * @dev Encodes an OFT LayerZero message. * @param _sendTo The recipient address. * @param _amountShared The amount in shared decimals. * @param _composeMsg The composed message. * @return _msg The encoded message. * @return hasCompose A boolean indicating whether the message has a composed payload. */ function encode( bytes32 _sendTo, uint64 _amountShared, bytes memory _composeMsg ) internal view returns (bytes memory _msg, bool hasCompose) { hasCompose = _composeMsg.length > 0; // @dev Remote chains will want to know the composed function caller ie. msg.sender on the src. _msg = hasCompose ? abi.encodePacked(_sendTo, _amountShared, addressToBytes32(msg.sender), _composeMsg) : abi.encodePacked(_sendTo, _amountShared); } /** * @dev Checks if the OFT message is composed. * @param _msg The OFT message. * @return A boolean indicating whether the message is composed. */ function isComposed(bytes calldata _msg) internal pure returns (bool) { return _msg.length > SEND_AMOUNT_SD_OFFSET; } /** * @dev Retrieves the recipient address from the OFT message. * @param _msg The OFT message. * @return The recipient address. */ function sendTo(bytes calldata _msg) internal pure returns (bytes32) { return bytes32(_msg[:SEND_TO_OFFSET]); } /** * @dev Retrieves the amount in shared decimals from the OFT message. * @param _msg The OFT message. * @return The amount in shared decimals. */ function amountSD(bytes calldata _msg) internal pure returns (uint64) { return uint64(bytes8(_msg[SEND_TO_OFFSET:SEND_AMOUNT_SD_OFFSET])); } /** * @dev Retrieves the composed message from the OFT message. * @param _msg The OFT message. * @return The composed message. */ function composeMsg(bytes calldata _msg) internal pure returns (bytes memory) { return _msg[SEND_AMOUNT_SD_OFFSET:]; } /** * @dev Converts an address to bytes32. * @param _addr The address to convert. * @return The bytes32 representation of the address. */ function addressToBytes32(address _addr) internal pure returns (bytes32) { return bytes32(uint256(uint160(_addr))); } /** * @dev Converts bytes32 to an address. * @param _b The bytes32 value to convert. * @return The address representation of bytes32. */ function bytes32ToAddress(bytes32 _b) internal pure returns (address) { return address(uint160(uint256(_b))); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; library OFTComposeMsgCodec { // Offset constants for decoding composed messages uint8 private constant NONCE_OFFSET = 8; uint8 private constant SRC_EID_OFFSET = 12; uint8 private constant AMOUNT_LD_OFFSET = 44; uint8 private constant COMPOSE_FROM_OFFSET = 76; /** * @dev Encodes a OFT composed message. * @param _nonce The nonce value. * @param _srcEid The source endpoint ID. * @param _amountLD The amount in local decimals. * @param _composeMsg The composed message. * @return _msg The encoded Composed message. */ function encode( uint64 _nonce, uint32 _srcEid, uint256 _amountLD, bytes memory _composeMsg // 0x[composeFrom][composeMsg] ) internal pure returns (bytes memory _msg) { _msg = abi.encodePacked(_nonce, _srcEid, _amountLD, _composeMsg); } /** * @dev Retrieves the nonce from the composed message. * @param _msg The message. * @return The nonce value. */ function nonce(bytes calldata _msg) internal pure returns (uint64) { return uint64(bytes8(_msg[:NONCE_OFFSET])); } /** * @dev Retrieves the source endpoint ID from the composed message. * @param _msg The message. * @return The source endpoint ID. */ function srcEid(bytes calldata _msg) internal pure returns (uint32) { return uint32(bytes4(_msg[NONCE_OFFSET:SRC_EID_OFFSET])); } /** * @dev Retrieves the amount in local decimals from the composed message. * @param _msg The message. * @return The amount in local decimals. */ function amountLD(bytes calldata _msg) internal pure returns (uint256) { return uint256(bytes32(_msg[SRC_EID_OFFSET:AMOUNT_LD_OFFSET])); } /** * @dev Retrieves the composeFrom value from the composed message. * @param _msg The message. * @return The composeFrom value. */ function composeFrom(bytes calldata _msg) internal pure returns (bytes32) { return bytes32(_msg[AMOUNT_LD_OFFSET:COMPOSE_FROM_OFFSET]); } /** * @dev Retrieves the composed message. * @param _msg The message. * @return The composed message. */ function composeMsg(bytes calldata _msg) internal pure returns (bytes memory) { return _msg[COMPOSE_FROM_OFFSET:]; } /** * @dev Converts an address to bytes32. * @param _addr The address to convert. * @return The bytes32 representation of the address. */ function addressToBytes32(address _addr) internal pure returns (bytes32) { return bytes32(uint256(uint160(_addr))); } /** * @dev Converts bytes32 to an address. * @param _b The bytes32 value to convert. * @return The address representation of bytes32. */ function bytes32ToAddress(bytes32 _b) internal pure returns (address) { return address(uint160(uint256(_b))); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Strings.sol) pragma solidity ^0.8.20; import {Math} from "./math/Math.sol"; import {SignedMath} from "./math/SignedMath.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant HEX_DIGITS = "0123456789abcdef"; uint8 private constant ADDRESS_LENGTH = 20; /** * @dev The `value` string doesn't fit in the specified `length`. */ error StringsInsufficientHexLength(uint256 value, uint256 length); /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), HEX_DIGITS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `int256` to its ASCII `string` decimal representation. */ function toStringSigned(int256 value) internal pure returns (string memory) { return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value))); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { uint256 localValue = value; bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = HEX_DIGITS[localValue & 0xf]; localValue >>= 4; } if (localValue != 0) { revert StringsInsufficientHexLength(value, length); } return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal * representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH); } /** * @dev Returns true if the two strings are equal. */ function equal(string memory a, string memory b) internal pure returns (bool) { return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/StorageSlot.sol) // This file was procedurally generated from scripts/generate/templates/StorageSlot.js. pragma solidity ^0.8.20; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ```solidity * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(newImplementation.code.length > 0); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` */ library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } struct StringSlot { string value; } struct BytesSlot { bytes value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` with member `value` located at `slot`. */ function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` representation of the string storage pointer `store`. */ function getStringSlot(string storage store) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } /** * @dev Returns an `BytesSlot` with member `value` located at `slot`. */ function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`. */ function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { MessagingParams, MessagingFee, MessagingReceipt } from "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroEndpointV2.sol"; import { OAppCore } from "./OAppCore.sol"; /** * @title OAppSender * @dev Abstract contract implementing the OAppSender functionality for sending messages to a LayerZero endpoint. */ abstract contract OAppSender is OAppCore { using SafeERC20 for IERC20; // Custom error messages error NotEnoughNative(uint256 msgValue); error LzTokenUnavailable(); // @dev The version of the OAppSender implementation. // @dev Version is bumped when changes are made to this contract. uint64 internal constant SENDER_VERSION = 1; /** * @notice Retrieves the OApp version information. * @return senderVersion The version of the OAppSender.sol contract. * @return receiverVersion The version of the OAppReceiver.sol contract. * * @dev Providing 0 as the default for OAppReceiver version. Indicates that the OAppReceiver is not implemented. * ie. this is a SEND only OApp. * @dev If the OApp uses both OAppSender and OAppReceiver, then this needs to be override returning the correct versions */ function oAppVersion() public view virtual returns (uint64 senderVersion, uint64 receiverVersion) { return (SENDER_VERSION, 0); } /** * @dev Internal function to interact with the LayerZero EndpointV2.quote() for fee calculation. * @param _dstEid The destination endpoint ID. * @param _message The message payload. * @param _options Additional options for the message. * @param _payInLzToken Flag indicating whether to pay the fee in LZ tokens. * @return fee The calculated MessagingFee for the message. * - nativeFee: The native fee for the message. * - lzTokenFee: The LZ token fee for the message. */ function _quote( uint32 _dstEid, bytes memory _message, bytes memory _options, bool _payInLzToken ) internal view virtual returns (MessagingFee memory fee) { return endpoint.quote( MessagingParams(_dstEid, _getPeerOrRevert(_dstEid), _message, _options, _payInLzToken), address(this) ); } /** * @dev Internal function to interact with the LayerZero EndpointV2.send() for sending a message. * @param _dstEid The destination endpoint ID. * @param _message The message payload. * @param _options Additional options for the message. * @param _fee The calculated LayerZero fee for the message. * - nativeFee: The native fee. * - lzTokenFee: The lzToken fee. * @param _refundAddress The address to receive any excess fee values sent to the endpoint. * @return receipt The receipt for the sent message. * - guid: The unique identifier for the sent message. * - nonce: The nonce of the sent message. * - fee: The LayerZero fee incurred for the message. */ function _lzSend( uint32 _dstEid, bytes memory _message, bytes memory _options, MessagingFee memory _fee, address _refundAddress ) internal virtual returns (MessagingReceipt memory receipt) { // @dev Push corresponding fees to the endpoint, any excess is sent back to the _refundAddress from the endpoint. uint256 messageValue = _payNative(_fee.nativeFee); if (_fee.lzTokenFee > 0) _payLzToken(_fee.lzTokenFee); return // solhint-disable-next-line check-send-result endpoint.send{ value: messageValue }( MessagingParams(_dstEid, _getPeerOrRevert(_dstEid), _message, _options, _fee.lzTokenFee > 0), _refundAddress ); } /** * @dev Internal function to pay the native fee associated with the message. * @param _nativeFee The native fee to be paid. * @return nativeFee The amount of native currency paid. * * @dev If the OApp needs to initiate MULTIPLE LayerZero messages in a single transaction, * this will need to be overridden because msg.value would contain multiple lzFees. * @dev Should be overridden in the event the LayerZero endpoint requires a different native currency. * @dev Some EVMs use an ERC20 as a method for paying transactions/gasFees. * @dev The endpoint is EITHER/OR, ie. it will NOT support both types of native payment at a time. */ function _payNative(uint256 _nativeFee) internal virtual returns (uint256 nativeFee) { if (msg.value != _nativeFee) revert NotEnoughNative(msg.value); return _nativeFee; } /** * @dev Internal function to pay the LZ token fee associated with the message. * @param _lzTokenFee The LZ token fee to be paid. * * @dev If the caller is trying to pay in the specified lzToken, then the lzTokenFee is passed to the endpoint. * @dev Any excess sent, is passed back to the specified _refundAddress in the _lzSend(). */ function _payLzToken(uint256 _lzTokenFee) internal virtual { // @dev Cannot cache the token because it is not immutable in the endpoint. address lzToken = endpoint.lzToken(); if (lzToken == address(0)) revert LzTokenUnavailable(); // Pay LZ token fee by sending tokens to the endpoint. IERC20(lzToken).safeTransferFrom(msg.sender, address(endpoint), _lzTokenFee); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import { IOAppReceiver, Origin } from "./interfaces/IOAppReceiver.sol"; import { OAppCore } from "./OAppCore.sol"; /** * @title OAppReceiver * @dev Abstract contract implementing the ILayerZeroReceiver interface and extending OAppCore for OApp receivers. */ abstract contract OAppReceiver is IOAppReceiver, OAppCore { // Custom error message for when the caller is not the registered endpoint/ error OnlyEndpoint(address addr); // @dev The version of the OAppReceiver implementation. // @dev Version is bumped when changes are made to this contract. uint64 internal constant RECEIVER_VERSION = 1; /** * @notice Retrieves the OApp version information. * @return senderVersion The version of the OAppSender.sol contract. * @return receiverVersion The version of the OAppReceiver.sol contract. * * @dev Providing 0 as the default for OAppSender version. Indicates that the OAppSender is not implemented. * ie. this is a RECEIVE only OApp. * @dev If the OApp uses both OAppSender and OAppReceiver, then this needs to be override returning the correct versions. */ function oAppVersion() public view virtual returns (uint64 senderVersion, uint64 receiverVersion) { return (0, RECEIVER_VERSION); } /** * @notice Retrieves the address responsible for 'sending' composeMsg's to the Endpoint. * @return sender The address responsible for 'sending' composeMsg's to the Endpoint. * * @dev Applications can optionally choose to implement a separate composeMsg sender that is NOT the bridging layer. * @dev The default sender IS the OApp implementer. */ function composeMsgSender() public view virtual returns (address sender) { return address(this); } /** * @notice Checks if the path initialization is allowed based on the provided origin. * @param origin The origin information containing the source endpoint and sender address. * @return Whether the path has been initialized. * * @dev This indicates to the endpoint that the OApp has enabled msgs for this particular path to be received. * @dev This defaults to assuming if a peer has been set, its initialized. * Can be overridden by the OApp if there is other logic to determine this. */ function allowInitializePath(Origin calldata origin) public view virtual returns (bool) { return peers[origin.srcEid] == origin.sender; } /** * @notice Retrieves the next nonce for a given source endpoint and sender address. * @dev _srcEid The source endpoint ID. * @dev _sender The sender address. * @return nonce The next nonce. * * @dev The path nonce starts from 1. If 0 is returned it means that there is NO nonce ordered enforcement. * @dev Is required by the off-chain executor to determine the OApp expects msg execution is ordered. * @dev This is also enforced by the OApp. * @dev By default this is NOT enabled. ie. nextNonce is hardcoded to return 0. */ function nextNonce(uint32 /*_srcEid*/, bytes32 /*_sender*/) public view virtual returns (uint64 nonce) { return 0; } /** * @dev Entry point for receiving messages or packets from the endpoint. * @param _origin The origin information containing the source endpoint and sender address. * - srcEid: The source chain endpoint ID. * - sender: The sender address on the src chain. * - nonce: The nonce of the message. * @param _guid The unique identifier for the received LayerZero message. * @param _message The payload of the received message. * @param _executor The address of the executor for the received message. * @param _extraData Additional arbitrary data provided by the corresponding executor. * * @dev Entry point for receiving msg/packet from the LayerZero endpoint. */ function lzReceive( Origin calldata _origin, bytes32 _guid, bytes calldata _message, address _executor, bytes calldata _extraData ) public payable virtual { // Ensures that only the endpoint can attempt to lzReceive() messages to this OApp. if (address(endpoint) != msg.sender) revert OnlyEndpoint(msg.sender); // Ensure that the sender matches the expected peer for the source endpoint. if (_getPeerOrRevert(_origin.srcEid) != _origin.sender) revert OnlyPeer(_origin.srcEid, _origin.sender); // Call the internal OApp implementation of lzReceive. _lzReceive(_origin, _guid, _message, _executor, _extraData); } /** * @dev Internal function to implement lzReceive logic without needing to copy the basic parameter validation. */ function _lzReceive( Origin calldata _origin, bytes32 _guid, bytes calldata _message, address _executor, bytes calldata _extraData ) internal virtual; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol"; import { IOAppCore, ILayerZeroEndpointV2 } from "./interfaces/IOAppCore.sol"; /** * @title OAppCore * @dev Abstract contract implementing the IOAppCore interface with basic OApp configurations. */ abstract contract OAppCore is IOAppCore, Ownable { // The LayerZero endpoint associated with the given OApp ILayerZeroEndpointV2 public immutable endpoint; // Mapping to store peers associated with corresponding endpoints mapping(uint32 eid => bytes32 peer) public peers; /** * @dev Constructor to initialize the OAppCore with the provided endpoint and delegate. * @param _endpoint The address of the LOCAL Layer Zero endpoint. * @param _delegate The delegate capable of making OApp configurations inside of the endpoint. * * @dev The delegate typically should be set as the owner of the contract. */ constructor(address _endpoint, address _delegate) { endpoint = ILayerZeroEndpointV2(_endpoint); if (_delegate == address(0)) revert InvalidDelegate(); endpoint.setDelegate(_delegate); } /** * @notice Sets the peer address (OApp instance) for a corresponding endpoint. * @param _eid The endpoint ID. * @param _peer The address of the peer to be associated with the corresponding endpoint. * * @dev Only the owner/admin of the OApp can call this function. * @dev Indicates that the peer is trusted to send LayerZero messages to this OApp. * @dev Set this to bytes32(0) to remove the peer address. * @dev Peer is a bytes32 to accommodate non-evm chains. */ function setPeer(uint32 _eid, bytes32 _peer) public virtual onlyOwner { peers[_eid] = _peer; emit PeerSet(_eid, _peer); } /** * @notice Internal function to get the peer address associated with a specific endpoint; reverts if NOT set. * ie. the peer is set to bytes32(0). * @param _eid The endpoint ID. * @return peer The address of the peer associated with the specified endpoint. */ function _getPeerOrRevert(uint32 _eid) internal view virtual returns (bytes32) { bytes32 peer = peers[_eid]; if (peer == bytes32(0)) revert NoPeer(_eid); return peer; } /** * @notice Sets the delegate address for the OApp. * @param _delegate The address of the delegate to be set. * * @dev Only the owner/admin of the OApp can call this function. * @dev Provides the ability for a delegate to set configs, on behalf of the OApp, directly on the Endpoint contract. */ function setDelegate(address _delegate) public onlyOwner { endpoint.setDelegate(_delegate); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; /** * @dev Struct representing enforced option parameters. */ struct EnforcedOptionParam { uint32 eid; // Endpoint ID uint16 msgType; // Message Type bytes options; // Additional options } /** * @title IOAppOptionsType3 * @dev Interface for the OApp with Type 3 Options, allowing the setting and combining of enforced options. */ interface IOAppOptionsType3 { // Custom error message for invalid options error InvalidOptions(bytes options); // Event emitted when enforced options are set event EnforcedOptionSet(EnforcedOptionParam[] _enforcedOptions); /** * @notice Sets enforced options for specific endpoint and message type combinations. * @param _enforcedOptions An array of EnforcedOptionParam structures specifying enforced options. */ function setEnforcedOptions(EnforcedOptionParam[] calldata _enforcedOptions) external; /** * @notice Combines options for a given endpoint and message type. * @param _eid The endpoint ID. * @param _msgType The OApp message type. * @param _extraOptions Additional options passed by the caller. * @return options The combination of caller specified options AND enforced options. */ function combineOptions( uint32 _eid, uint16 _msgType, bytes calldata _extraOptions ) external view returns (bytes memory options); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; struct PreCrimePeer { uint32 eid; bytes32 preCrime; bytes32 oApp; } // TODO not done yet interface IPreCrime { error OnlyOffChain(); // for simulate() error PacketOversize(uint256 max, uint256 actual); error PacketUnsorted(); error SimulationFailed(bytes reason); // for preCrime() error SimulationResultNotFound(uint32 eid); error InvalidSimulationResult(uint32 eid, bytes reason); error CrimeFound(bytes crime); function getConfig(bytes[] calldata _packets, uint256[] calldata _packetMsgValues) external returns (bytes memory); function simulate( bytes[] calldata _packets, uint256[] calldata _packetMsgValues ) external payable returns (bytes memory); function buildSimulationResult() external view returns (bytes memory); function preCrime( bytes[] calldata _packets, uint256[] calldata _packetMsgValues, bytes[] calldata _simulations ) external; function version() external view returns (uint64 major, uint8 minor); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; // @dev Import the Origin so it's exposed to OAppPreCrimeSimulator implementers. // solhint-disable-next-line no-unused-import import { InboundPacket, Origin } from "../libs/Packet.sol"; /** * @title IOAppPreCrimeSimulator Interface * @dev Interface for the preCrime simulation functionality in an OApp. */ interface IOAppPreCrimeSimulator { // @dev simulation result used in PreCrime implementation error SimulationResult(bytes result); error OnlySelf(); /** * @dev Emitted when the preCrime contract address is set. * @param preCrimeAddress The address of the preCrime contract. */ event PreCrimeSet(address preCrimeAddress); /** * @dev Retrieves the address of the preCrime contract implementation. * @return The address of the preCrime contract. */ function preCrime() external view returns (address); /** * @dev Retrieves the address of the OApp contract. * @return The address of the OApp contract. */ function oApp() external view returns (address); /** * @dev Sets the preCrime contract address. * @param _preCrime The address of the preCrime contract. */ function setPreCrime(address _preCrime) external; /** * @dev Mocks receiving a packet, then reverts with a series of data to infer the state/result. * @param _packets An array of LayerZero InboundPacket objects representing received packets. */ function lzReceiveAndRevert(InboundPacket[] calldata _packets) external payable; /** * @dev checks if the specified peer is considered 'trusted' by the OApp. * @param _eid The endpoint Id to check. * @param _peer The peer to check. * @return Whether the peer passed is considered 'trusted' by the OApp. */ function isPeer(uint32 _eid, bytes32 _peer) 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/SignedMath.sol) pragma solidity ^0.8.20; /** * @dev Standard signed math utilities missing in the Solidity language. */ library SignedMath { /** * @dev Returns the largest of two signed numbers. */ function max(int256 a, int256 b) internal pure returns (int256) { return a > b ? a : b; } /** * @dev Returns the smallest of two signed numbers. */ function min(int256 a, int256 b) internal pure returns (int256) { return a < b ? a : b; } /** * @dev Returns the average of two signed numbers without overflow. * The result is rounded towards zero. */ function average(int256 a, int256 b) internal pure returns (int256) { // Formula from the book "Hacker's Delight" int256 x = (a & b) + ((a ^ b) >> 1); return x + (int256(uint256(x) >> 255) & (a ^ b)); } /** * @dev Returns the absolute unsigned value of a signed value. */ function abs(int256 n) internal pure returns (uint256) { unchecked { // must be unchecked in order to support `n = type(int256).min` return uint256(n >= 0 ? n : -n); } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; import { IMessageLibManager } from "./IMessageLibManager.sol"; import { IMessagingComposer } from "./IMessagingComposer.sol"; import { IMessagingChannel } from "./IMessagingChannel.sol"; import { IMessagingContext } from "./IMessagingContext.sol"; struct MessagingParams { uint32 dstEid; bytes32 receiver; bytes message; bytes options; bool payInLzToken; } struct MessagingReceipt { bytes32 guid; uint64 nonce; MessagingFee fee; } struct MessagingFee { uint256 nativeFee; uint256 lzTokenFee; } struct Origin { uint32 srcEid; bytes32 sender; uint64 nonce; } interface ILayerZeroEndpointV2 is IMessageLibManager, IMessagingComposer, IMessagingChannel, IMessagingContext { event PacketSent(bytes encodedPayload, bytes options, address sendLibrary); event PacketVerified(Origin origin, address receiver, bytes32 payloadHash); event PacketDelivered(Origin origin, address receiver); event LzReceiveAlert( address indexed receiver, address indexed executor, Origin origin, bytes32 guid, uint256 gas, uint256 value, bytes message, bytes extraData, bytes reason ); event LzTokenSet(address token); event DelegateSet(address sender, address delegate); function quote(MessagingParams calldata _params, address _sender) external view returns (MessagingFee memory); function send( MessagingParams calldata _params, address _refundAddress ) external payable returns (MessagingReceipt memory); function verify(Origin calldata _origin, address _receiver, bytes32 _payloadHash) external; function verifiable(Origin calldata _origin, address _receiver) external view returns (bool); function initializable(Origin calldata _origin, address _receiver) external view returns (bool); function lzReceive( Origin calldata _origin, address _receiver, bytes32 _guid, bytes calldata _message, bytes calldata _extraData ) external payable; // oapp can burn messages partially by calling this function with its own business logic if messages are verified in order function clear(address _oapp, Origin calldata _origin, bytes32 _guid, bytes calldata _message) external; function setLzToken(address _lzToken) external; function lzToken() external view returns (address); function nativeToken() external view returns (address); function setDelegate(address _delegate) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import { ILayerZeroReceiver, Origin } from "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroReceiver.sol"; interface IOAppReceiver is ILayerZeroReceiver { /** * @notice Retrieves the address responsible for 'sending' composeMsg's to the Endpoint. * @return sender The address responsible for 'sending' composeMsg's to the Endpoint. * * @dev Applications can optionally choose to implement a separate composeMsg sender that is NOT the bridging layer. * @dev The default sender IS the OApp implementer. */ function composeMsgSender() external view returns (address sender); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import { ILayerZeroEndpointV2 } from "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroEndpointV2.sol"; /** * @title IOAppCore */ interface IOAppCore { // Custom error messages error OnlyPeer(uint32 eid, bytes32 sender); error NoPeer(uint32 eid); error InvalidEndpointCall(); error InvalidDelegate(); // Event emitted when a peer (OApp) is set for a corresponding endpoint event PeerSet(uint32 eid, bytes32 peer); /** * @notice Retrieves the OApp version information. * @return senderVersion The version of the OAppSender.sol contract. * @return receiverVersion The version of the OAppReceiver.sol contract. */ function oAppVersion() external view returns (uint64 senderVersion, uint64 receiverVersion); /** * @notice Retrieves the LayerZero endpoint associated with the OApp. * @return iEndpoint The LayerZero endpoint as an interface. */ function endpoint() external view returns (ILayerZeroEndpointV2 iEndpoint); /** * @notice Retrieves the peer (OApp) associated with a corresponding endpoint. * @param _eid The endpoint ID. * @return peer The peer address (OApp instance) associated with the corresponding endpoint. */ function peers(uint32 _eid) external view returns (bytes32 peer); /** * @notice Sets the peer address (OApp instance) for a corresponding endpoint. * @param _eid The endpoint ID. * @param _peer The address of the peer to be associated with the corresponding endpoint. */ function setPeer(uint32 _eid, bytes32 _peer) external; /** * @notice Sets the delegate address for the OApp Core. * @param _delegate The address of the delegate to be set. */ function setDelegate(address _delegate) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import { Origin } from "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroEndpointV2.sol"; import { PacketV1Codec } from "@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/PacketV1Codec.sol"; /** * @title InboundPacket * @dev Structure representing an inbound packet received by the contract. */ struct InboundPacket { Origin origin; // Origin information of the packet. uint32 dstEid; // Destination endpointId of the packet. address receiver; // Receiver address for the packet. bytes32 guid; // Unique identifier of the packet. uint256 value; // msg.value of the packet. address executor; // Executor address for the packet. bytes message; // Message payload of the packet. bytes extraData; // Additional arbitrary data for the packet. } /** * @title PacketDecoder * @dev Library for decoding LayerZero packets. */ library PacketDecoder { using PacketV1Codec for bytes; /** * @dev Decode an inbound packet from the given packet data. * @param _packet The packet data to decode. * @return packet An InboundPacket struct representing the decoded packet. */ function decode(bytes calldata _packet) internal pure returns (InboundPacket memory packet) { packet.origin = Origin(_packet.srcEid(), _packet.sender(), _packet.nonce()); packet.dstEid = _packet.dstEid(); packet.receiver = _packet.receiverB20(); packet.guid = _packet.guid(); packet.message = _packet.message(); } /** * @dev Decode multiple inbound packets from the given packet data and associated message values. * @param _packets An array of packet data to decode. * @param _packetMsgValues An array of associated message values for each packet. * @return packets An array of InboundPacket structs representing the decoded packets. */ function decode( bytes[] calldata _packets, uint256[] memory _packetMsgValues ) internal pure returns (InboundPacket[] memory packets) { packets = new InboundPacket[](_packets.length); for (uint256 i = 0; i < _packets.length; i++) { bytes calldata packet = _packets[i]; packets[i] = PacketDecoder.decode(packet); // @dev Allows the verifier to specify the msg.value that gets passed in lzReceive. packets[i].value = _packetMsgValues[i]; } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; struct SetConfigParam { uint32 eid; uint32 configType; bytes config; } interface IMessageLibManager { struct Timeout { address lib; uint256 expiry; } event LibraryRegistered(address newLib); event DefaultSendLibrarySet(uint32 eid, address newLib); event DefaultReceiveLibrarySet(uint32 eid, address newLib); event DefaultReceiveLibraryTimeoutSet(uint32 eid, address oldLib, uint256 expiry); event SendLibrarySet(address sender, uint32 eid, address newLib); event ReceiveLibrarySet(address receiver, uint32 eid, address newLib); event ReceiveLibraryTimeoutSet(address receiver, uint32 eid, address oldLib, uint256 timeout); function registerLibrary(address _lib) external; function isRegisteredLibrary(address _lib) external view returns (bool); function getRegisteredLibraries() external view returns (address[] memory); function setDefaultSendLibrary(uint32 _eid, address _newLib) external; function defaultSendLibrary(uint32 _eid) external view returns (address); function setDefaultReceiveLibrary(uint32 _eid, address _newLib, uint256 _timeout) external; function defaultReceiveLibrary(uint32 _eid) external view returns (address); function setDefaultReceiveLibraryTimeout(uint32 _eid, address _lib, uint256 _expiry) external; function defaultReceiveLibraryTimeout(uint32 _eid) external view returns (address lib, uint256 expiry); function isSupportedEid(uint32 _eid) external view returns (bool); function isValidReceiveLibrary(address _receiver, uint32 _eid, address _lib) external view returns (bool); /// ------------------- OApp interfaces ------------------- function setSendLibrary(address _oapp, uint32 _eid, address _newLib) external; function getSendLibrary(address _sender, uint32 _eid) external view returns (address lib); function isDefaultSendLibrary(address _sender, uint32 _eid) external view returns (bool); function setReceiveLibrary(address _oapp, uint32 _eid, address _newLib, uint256 _gracePeriod) external; function getReceiveLibrary(address _receiver, uint32 _eid) external view returns (address lib, bool isDefault); function setReceiveLibraryTimeout(address _oapp, uint32 _eid, address _lib, uint256 _gracePeriod) external; function receiveLibraryTimeout(address _receiver, uint32 _eid) external view returns (address lib, uint256 expiry); function setConfig(address _oapp, address _lib, SetConfigParam[] calldata _params) external; function getConfig( address _oapp, address _lib, uint32 _eid, uint32 _configType ) external view returns (bytes memory config); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; interface IMessagingComposer { event ComposeSent(address from, address to, bytes32 guid, uint16 index, bytes message); event ComposeDelivered(address from, address to, bytes32 guid, uint16 index); event LzComposeAlert( address indexed from, address indexed to, address indexed executor, bytes32 guid, uint16 index, uint256 gas, uint256 value, bytes message, bytes extraData, bytes reason ); function composeQueue( address _from, address _to, bytes32 _guid, uint16 _index ) external view returns (bytes32 messageHash); function sendCompose(address _to, bytes32 _guid, uint16 _index, bytes calldata _message) external; function lzCompose( address _from, address _to, bytes32 _guid, uint16 _index, bytes calldata _message, bytes calldata _extraData ) external payable; }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; interface IMessagingChannel { event InboundNonceSkipped(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce); event PacketNilified(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce, bytes32 payloadHash); event PacketBurnt(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce, bytes32 payloadHash); function eid() external view returns (uint32); // this is an emergency function if a message cannot be verified for some reasons // required to provide _nextNonce to avoid race condition function skip(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce) external; function nilify(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce, bytes32 _payloadHash) external; function burn(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce, bytes32 _payloadHash) external; function nextGuid(address _sender, uint32 _dstEid, bytes32 _receiver) external view returns (bytes32); function inboundNonce(address _receiver, uint32 _srcEid, bytes32 _sender) external view returns (uint64); function outboundNonce(address _sender, uint32 _dstEid, bytes32 _receiver) external view returns (uint64); function inboundPayloadHash( address _receiver, uint32 _srcEid, bytes32 _sender, uint64 _nonce ) external view returns (bytes32); function lazyInboundNonce(address _receiver, uint32 _srcEid, bytes32 _sender) external view returns (uint64); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; interface IMessagingContext { function isSendingMessage() external view returns (bool); function getSendContext() external view returns (uint32 dstEid, address sender); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; import { Origin } from "./ILayerZeroEndpointV2.sol"; interface ILayerZeroReceiver { function allowInitializePath(Origin calldata _origin) external view returns (bool); function nextNonce(uint32 _eid, bytes32 _sender) external view returns (uint64); function lzReceive( Origin calldata _origin, bytes32 _guid, bytes calldata _message, address _executor, bytes calldata _extraData ) external payable; }
// SPDX-License-Identifier: LZBL-1.2 pragma solidity ^0.8.20; import { Packet } from "../../interfaces/ISendLib.sol"; import { AddressCast } from "../../libs/AddressCast.sol"; library PacketV1Codec { using AddressCast for address; using AddressCast for bytes32; uint8 internal constant PACKET_VERSION = 1; // header (version + nonce + path) // version uint256 private constant PACKET_VERSION_OFFSET = 0; // nonce uint256 private constant NONCE_OFFSET = 1; // path uint256 private constant SRC_EID_OFFSET = 9; uint256 private constant SENDER_OFFSET = 13; uint256 private constant DST_EID_OFFSET = 45; uint256 private constant RECEIVER_OFFSET = 49; // payload (guid + message) uint256 private constant GUID_OFFSET = 81; // keccak256(nonce + path) uint256 private constant MESSAGE_OFFSET = 113; function encode(Packet memory _packet) internal pure returns (bytes memory encodedPacket) { encodedPacket = abi.encodePacked( PACKET_VERSION, _packet.nonce, _packet.srcEid, _packet.sender.toBytes32(), _packet.dstEid, _packet.receiver, _packet.guid, _packet.message ); } function encodePacketHeader(Packet memory _packet) internal pure returns (bytes memory) { return abi.encodePacked( PACKET_VERSION, _packet.nonce, _packet.srcEid, _packet.sender.toBytes32(), _packet.dstEid, _packet.receiver ); } function encodePayload(Packet memory _packet) internal pure returns (bytes memory) { return abi.encodePacked(_packet.guid, _packet.message); } function header(bytes calldata _packet) internal pure returns (bytes calldata) { return _packet[0:GUID_OFFSET]; } function version(bytes calldata _packet) internal pure returns (uint8) { return uint8(bytes1(_packet[PACKET_VERSION_OFFSET:NONCE_OFFSET])); } function nonce(bytes calldata _packet) internal pure returns (uint64) { return uint64(bytes8(_packet[NONCE_OFFSET:SRC_EID_OFFSET])); } function srcEid(bytes calldata _packet) internal pure returns (uint32) { return uint32(bytes4(_packet[SRC_EID_OFFSET:SENDER_OFFSET])); } function sender(bytes calldata _packet) internal pure returns (bytes32) { return bytes32(_packet[SENDER_OFFSET:DST_EID_OFFSET]); } function senderAddressB20(bytes calldata _packet) internal pure returns (address) { return sender(_packet).toAddress(); } function dstEid(bytes calldata _packet) internal pure returns (uint32) { return uint32(bytes4(_packet[DST_EID_OFFSET:RECEIVER_OFFSET])); } function receiver(bytes calldata _packet) internal pure returns (bytes32) { return bytes32(_packet[RECEIVER_OFFSET:GUID_OFFSET]); } function receiverB20(bytes calldata _packet) internal pure returns (address) { return receiver(_packet).toAddress(); } function guid(bytes calldata _packet) internal pure returns (bytes32) { return bytes32(_packet[GUID_OFFSET:MESSAGE_OFFSET]); } function message(bytes calldata _packet) internal pure returns (bytes calldata) { return bytes(_packet[MESSAGE_OFFSET:]); } function payload(bytes calldata _packet) internal pure returns (bytes calldata) { return bytes(_packet[GUID_OFFSET:]); } function payloadHash(bytes calldata _packet) internal pure returns (bytes32) { return keccak256(payload(_packet)); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; import { MessagingFee } from "./ILayerZeroEndpointV2.sol"; import { IMessageLib } from "./IMessageLib.sol"; struct Packet { uint64 nonce; uint32 srcEid; address sender; uint32 dstEid; bytes32 receiver; bytes32 guid; bytes message; } interface ISendLib is IMessageLib { function send( Packet calldata _packet, bytes calldata _options, bool _payInLzToken ) external returns (MessagingFee memory, bytes memory encodedPacket); function quote( Packet calldata _packet, bytes calldata _options, bool _payInLzToken ) external view returns (MessagingFee memory); function setTreasury(address _treasury) external; function withdrawFee(address _to, uint256 _amount) external; function withdrawLzTokenFee(address _lzToken, address _to, uint256 _amount) external; }
// SPDX-License-Identifier: LZBL-1.2 pragma solidity ^0.8.20; library AddressCast { error AddressCast_InvalidSizeForAddress(); error AddressCast_InvalidAddress(); function toBytes32(bytes calldata _addressBytes) internal pure returns (bytes32 result) { if (_addressBytes.length > 32) revert AddressCast_InvalidAddress(); result = bytes32(_addressBytes); unchecked { uint256 offset = 32 - _addressBytes.length; result = result >> (offset * 8); } } function toBytes32(address _address) internal pure returns (bytes32 result) { result = bytes32(uint256(uint160(_address))); } function toBytes(bytes32 _addressBytes32, uint256 _size) internal pure returns (bytes memory result) { if (_size == 0 || _size > 32) revert AddressCast_InvalidSizeForAddress(); result = new bytes(_size); unchecked { uint256 offset = 256 - _size * 8; assembly { mstore(add(result, 32), shl(offset, _addressBytes32)) } } } function toAddress(bytes32 _addressBytes32) internal pure returns (address result) { result = address(uint160(uint256(_addressBytes32))); } function toAddress(bytes calldata _addressBytes) internal pure returns (address result) { if (_addressBytes.length != 20) revert AddressCast_InvalidAddress(); result = address(bytes20(_addressBytes)); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; import { IERC165 } from "@openzeppelin/contracts/utils/introspection/IERC165.sol"; import { SetConfigParam } from "./IMessageLibManager.sol"; enum MessageLibType { Send, Receive, SendAndReceive } interface IMessageLib is IERC165 { function setConfig(address _oapp, SetConfigParam[] calldata _config) external; function getConfig(uint32 _eid, address _oapp, uint32 _configType) external view returns (bytes memory config); function isSupportedEid(uint32 _eid) external view returns (bool); // message libs of same major version are compatible function version() external view returns (uint64 major, uint8 minor, uint8 endpointVersion); function messageLibType() external view returns (MessageLibType); }
{ "remappings": [ "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/", "@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/", "@chainlink/contracts/=lib/chainlink/contracts/", "forge-std/=lib/forge-std/src/", "@layerzerolabs/lz-evm-protocol-v2/=lib/LayerZero-v2/protocol/", "@layerzerolabs/lz-evm-oapp-v2/=lib/LayerZero-v2/oapp/", "@createx/=lib/createx/src/", "LayerZero-v2/=lib/LayerZero-v2/", "chainlink/=lib/chainlink/contracts/", "createx/=lib/createx/src/", "ds-test/=lib/createx/lib/forge-std/lib/ds-test/src/", "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/", "forge-std/=lib/forge-std/src/", "openzeppelin-contracts/=lib/openzeppelin-contracts/", "openzeppelin/=lib/createx/lib/openzeppelin-contracts/contracts/", "solady/=lib/createx/lib/solady/" ], "optimizer": { "enabled": true, "runs": 200 }, "metadata": { "useLiteralContent": false, "bytecodeHash": "ipfs", "appendCBOR": true }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "evmVersion": "cancun", "viaIR": true, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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ISPCTPool","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"switchMode","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalPooledSPCT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"treasury","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"usdc","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000003def017cd003f44aa7b49bdfcf95fd61cf5294cb0000000000000000000000001a44076050125825900e736c501f859c50fe728c000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48000000000000000000000000f30a29f1c540724fd8c5c4be1af604a6c6800d29000000000000000000000000900fff3bbf47ded50fd4940d055e1324f38b0d4f
-----Decoded View---------------
Arg [0] : _admin (address): 0x3deF017cd003f44aa7b49BdFcF95fD61cF5294Cb
Arg [1] : _endpoint (address): 0x1a44076050125825900e736c501f859c50fE728c
Arg [2] : _usdc (address): 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
Arg [3] : _spct (address): 0xf30a29F1C540724Fd8c5c4Be1AF604a6C6800D29
Arg [4] : _oracle (address): 0x900FFF3Bbf47dED50Fd4940D055E1324F38B0d4f
-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 0000000000000000000000003def017cd003f44aa7b49bdfcf95fd61cf5294cb
Arg [1] : 0000000000000000000000001a44076050125825900e736c501f859c50fe728c
Arg [2] : 000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
Arg [3] : 000000000000000000000000f30a29f1c540724fd8c5c4be1af604a6c6800d29
Arg [4] : 000000000000000000000000900fff3bbf47ded50fd4940d055e1324f38b0d4f
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