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Transfer | 22768387 | 38 hrs ago | IN | 0 ETH | 0.00053455 | ||||
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0x60c06040 | 22280256 | 69 days ago | Contract Creation | 0 ETH |
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Contract Source Code Verified (Exact Match)
Contract Name:
CrosschainERC20
Compiler Version
v0.8.25+commit.b61c2a91
Optimization Enabled:
Yes with 10000 runs
Other Settings:
cancun EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.25; // Contracts import {XERC20} from '@xERC20/contracts/XERC20.sol'; // Interfaces import {IXERC20} from '@xERC20/interfaces/IXERC20.sol'; import {IERC20} from 'forge-std/interfaces/IERC20.sol'; import {ICrosschainERC20} from 'interfaces/ICrosschainERC20.sol'; import {IERC165, IERC7802} from 'interfaces/external/IERC7802.sol'; /// @title CrosschainERC20 /// @notice A standard ERC20 extension implementing IERC7281 and IERC7802 for /// unified cross-chain fungibility across any bridge. contract CrosschainERC20 is XERC20, ICrosschainERC20 { /// @notice Constructs the CrosschainERC20 contract. /// @param __name Name of the token. /// @param __symbol Symbol of the token. /// @param __decimals Decimals of the token. /// @param __factory Address of the factory contract. constructor( string memory __name, string memory __symbol, uint8 __decimals, address __factory ) XERC20(__name, __symbol, __decimals, __factory) {} /// @inheritdoc IERC7802 function crosschainMint(address _to, uint256 _amount) external { _mintWithCaller(msg.sender, _to, _amount); emit CrosschainMint(_to, _amount, msg.sender); } /// @inheritdoc IERC7802 function crosschainBurn(address _from, uint256 _amount) external { if (msg.sender != _from) { _spendAllowance(_from, msg.sender, _amount); } _burnWithCaller(msg.sender, _from, _amount); emit CrosschainBurn(_from, _amount, msg.sender); } /// @inheritdoc IERC165 function supportsInterface(bytes4 _interfaceId) public view virtual returns (bool) { return _interfaceId == type(IERC7802).interfaceId || _interfaceId == type(IERC20).interfaceId || _interfaceId == type(IERC165).interfaceId || _interfaceId == type(IXERC20).interfaceId; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.4 <0.9.0; import {IXERC20} from '../interfaces/IXERC20.sol'; import {ERC20} from 'solady/tokens/ERC20.sol'; import {Ownable} from 'solady/auth/Ownable.sol'; contract XERC20 is ERC20, Ownable, IXERC20 { /** * @notice The duration it takes for the limits to fully replenish */ uint256 private constant _DURATION = 1 days; /** * @notice The maximum limit of a bridge */ uint256 private constant _MAX_LIMIT = type(uint256).max >> 1; /** * @notice The number of decimals of the token */ uint8 private immutable _DECIMALS; /** * @notice The address of the factory which deployed this contract */ address public immutable FACTORY; /** * @notice The name of the token */ string private _name; /** * @notice The symbol of the token */ string private _symbol; /** * @notice The address of the lockbox contract */ address public lockbox; /** * @notice Maps bridge address to bridge configurations */ mapping(address => Bridge) public bridges; /** * @notice Constructs the initial config of the XERC20 * * @param __name The name of the token * @param __symbol The symbol of the token * @param __decimals The number of decimals of the token * @param __factory The factory which deployed this contract */ constructor(string memory __name, string memory __symbol, uint8 __decimals, address __factory) { _name = __name; _symbol = __symbol; _DECIMALS = __decimals; FACTORY = __factory; _initializeOwner(__factory); } /** * @notice Returns the name of the token * @return name_ The name of the token */ function name() public view override returns (string memory name_) { return _name; } /** * @notice Returns the symbol of the token * @return symbol_ The symbol of the token */ function symbol() public view override returns (string memory symbol_) { return _symbol; } /** * @notice Returns the number of decimals of the token * @return decimals_ The number of decimals of the token */ function decimals() public view override returns (uint8 decimals_) { return _DECIMALS; } /** * @notice Mints tokens for a user * @dev Can only be called by a bridge * @param _user The address of the user who needs tokens minted * @param _amount The amount of tokens being minted */ function mint(address _user, uint256 _amount) public { _mintWithCaller(msg.sender, _user, _amount); } /** * @notice Burns tokens for a user * @dev Can only be called by a bridge * @param _user The address of the user who needs tokens burned * @param _amount The amount of tokens being burned */ function burn(address _user, uint256 _amount) public { if (msg.sender != _user) { _spendAllowance(_user, msg.sender, _amount); } _burnWithCaller(msg.sender, _user, _amount); } /** * @notice Sets the lockbox address * * @param _lockbox The address of the lockbox */ function setLockbox( address _lockbox ) public { if (msg.sender != FACTORY) revert IXERC20_NotFactory(); lockbox = _lockbox; emit LockboxSet(_lockbox); } /** * @notice Updates the limits of any bridge * @dev Can only be called by the owner * @param _mintingLimit The updated minting limit we are setting to the bridge * @param _burningLimit The updated burning limit we are setting to the bridge * @param _bridge The address of the bridge we are setting the limits too */ function setLimits(address _bridge, uint256 _mintingLimit, uint256 _burningLimit) external onlyOwner { if (_mintingLimit > _MAX_LIMIT || _burningLimit > _MAX_LIMIT) { revert IXERC20_LimitsTooHigh(); } _changeMinterLimit(_bridge, _mintingLimit); _changeBurnerLimit(_bridge, _burningLimit); emit BridgeLimitsSet(_mintingLimit, _burningLimit, _bridge); } /** * @notice Returns the max limit of a bridge * * @param _bridge the bridge we are viewing the limits of * @return _limit The limit the bridge has */ function mintingMaxLimitOf( address _bridge ) public view returns (uint256 _limit) { _limit = bridges[_bridge].minterParams.maxLimit; } /** * @notice Returns the max limit of a bridge * * @param _bridge the bridge we are viewing the limits of * @return _limit The limit the bridge has */ function burningMaxLimitOf( address _bridge ) public view returns (uint256 _limit) { _limit = bridges[_bridge].burnerParams.maxLimit; } /** * @notice Returns the current limit of a bridge * * @param _bridge the bridge we are viewing the limits of * @return _limit The limit the bridge has */ function mintingCurrentLimitOf( address _bridge ) public view returns (uint256 _limit) { _limit = _getCurrentLimit( bridges[_bridge].minterParams.currentLimit, bridges[_bridge].minterParams.maxLimit, bridges[_bridge].minterParams.timestamp, bridges[_bridge].minterParams.ratePerSecond ); } /** * @notice Returns the current limit of a bridge * * @param _bridge the bridge we are viewing the limits of * @return _limit The limit the bridge has */ function burningCurrentLimitOf( address _bridge ) public view returns (uint256 _limit) { _limit = _getCurrentLimit( bridges[_bridge].burnerParams.currentLimit, bridges[_bridge].burnerParams.maxLimit, bridges[_bridge].burnerParams.timestamp, bridges[_bridge].burnerParams.ratePerSecond ); } /** * @notice Uses the limit of any bridge * @param _bridge The address of the bridge who is being changed * @param _change The change in the limit */ function _useMinterLimits(address _bridge, uint256 _change) internal { uint256 _currentLimit = mintingCurrentLimitOf(_bridge); bridges[_bridge].minterParams.timestamp = block.timestamp; bridges[_bridge].minterParams.currentLimit = _currentLimit - _change; } /** * @notice Uses the limit of any bridge * @param _bridge The address of the bridge who is being changed * @param _change The change in the limit */ function _useBurnerLimits(address _bridge, uint256 _change) internal { uint256 _currentLimit = burningCurrentLimitOf(_bridge); bridges[_bridge].burnerParams.timestamp = block.timestamp; bridges[_bridge].burnerParams.currentLimit = _currentLimit - _change; } /** * @notice Updates the limit of any bridge * @dev Can only be called by the owner * @param _bridge The address of the bridge we are setting the limit too * @param _limit The updated limit we are setting to the bridge */ function _changeMinterLimit(address _bridge, uint256 _limit) internal { uint256 _oldLimit = bridges[_bridge].minterParams.maxLimit; uint256 _currentLimit = mintingCurrentLimitOf(_bridge); bridges[_bridge].minterParams.maxLimit = _limit; bridges[_bridge].minterParams.currentLimit = _calculateNewCurrentLimit(_limit, _oldLimit, _currentLimit); bridges[_bridge].minterParams.ratePerSecond = _limit / _DURATION; bridges[_bridge].minterParams.timestamp = block.timestamp; } /** * @notice Updates the limit of any bridge * @dev Can only be called by the owner * @param _bridge The address of the bridge we are setting the limit too * @param _limit The updated limit we are setting to the bridge */ function _changeBurnerLimit(address _bridge, uint256 _limit) internal { uint256 _oldLimit = bridges[_bridge].burnerParams.maxLimit; uint256 _currentLimit = burningCurrentLimitOf(_bridge); bridges[_bridge].burnerParams.maxLimit = _limit; bridges[_bridge].burnerParams.currentLimit = _calculateNewCurrentLimit(_limit, _oldLimit, _currentLimit); bridges[_bridge].burnerParams.ratePerSecond = _limit / _DURATION; bridges[_bridge].burnerParams.timestamp = block.timestamp; } /** * @notice Updates the current limit * * @param _limit The new limit * @param _oldLimit The old limit * @param _currentLimit The current limit * @return _newCurrentLimit The new current limit */ function _calculateNewCurrentLimit( uint256 _limit, uint256 _oldLimit, uint256 _currentLimit ) internal pure returns (uint256 _newCurrentLimit) { uint256 _difference; if (_oldLimit > _limit) { _difference = _oldLimit - _limit; _newCurrentLimit = _currentLimit > _difference ? _currentLimit - _difference : 0; } else { _difference = _limit - _oldLimit; _newCurrentLimit = _currentLimit + _difference; } } /** * @notice Gets the current limit * * @param _currentLimit The current limit * @param _maxLimit The max limit * @param _timestamp The timestamp of the last update * @param _ratePerSecond The rate per second * @return _limit The current limit */ function _getCurrentLimit( uint256 _currentLimit, uint256 _maxLimit, uint256 _timestamp, uint256 _ratePerSecond ) internal view returns (uint256 _limit) { _limit = _currentLimit; if (_limit == _maxLimit) { return _limit; } else if (_timestamp + _DURATION <= block.timestamp) { _limit = _maxLimit; } else if (_timestamp + _DURATION > block.timestamp) { uint256 _timePassed = block.timestamp - _timestamp; uint256 _calculatedLimit = _limit + (_timePassed * _ratePerSecond); _limit = _calculatedLimit > _maxLimit ? _maxLimit : _calculatedLimit; } } /** * @notice Internal function for burning tokens * * @param _caller The caller address * @param _user The user address * @param _amount The amount to burn */ function _burnWithCaller(address _caller, address _user, uint256 _amount) internal { if (_caller != lockbox) { uint256 _currentLimit = burningCurrentLimitOf(_caller); if (_currentLimit < _amount) revert IXERC20_NotHighEnoughLimits(); _useBurnerLimits(_caller, _amount); } _burn(_user, _amount); } /** * @notice Internal function for minting tokens * * @param _caller The caller address * @param _user The user address * @param _amount The amount to mint */ function _mintWithCaller(address _caller, address _user, uint256 _amount) internal { if (_caller != lockbox) { uint256 _currentLimit = mintingCurrentLimitOf(_caller); if (_currentLimit < _amount) revert IXERC20_NotHighEnoughLimits(); _useMinterLimits(_caller, _amount); } _mint(_user, _amount); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.4 <0.9.0; interface IXERC20 { /** * @notice Emits when a lockbox is set * * @param _lockbox The address of the lockbox */ event LockboxSet(address _lockbox); /** * @notice Emits when a limit is set * * @param _mintingLimit The updated minting limit we are setting to the bridge * @param _burningLimit The updated burning limit we are setting to the bridge * @param _bridge The address of the bridge we are setting the limit too */ event BridgeLimitsSet(uint256 _mintingLimit, uint256 _burningLimit, address indexed _bridge); /** * @notice Reverts when a user with too low of a limit tries to call mint/burn */ error IXERC20_NotHighEnoughLimits(); /** * @notice Reverts when caller is not the factory */ error IXERC20_NotFactory(); /** * @notice Reverts when limits are too high */ error IXERC20_LimitsTooHigh(); /** * @notice Contains the full minting and burning data for a particular bridge * * @param minterParams The minting parameters for the bridge * @param burnerParams The burning parameters for the bridge */ struct Bridge { BridgeParameters minterParams; BridgeParameters burnerParams; } /** * @notice Contains the mint or burn parameters for a bridge * * @param timestamp The timestamp of the last mint/burn * @param ratePerSecond The rate per second of the bridge * @param maxLimit The max limit of the bridge * @param currentLimit The current limit of the bridge */ struct BridgeParameters { uint256 timestamp; uint256 ratePerSecond; uint256 maxLimit; uint256 currentLimit; } /** * @notice Sets the lockbox address * * @param _lockbox The address of the lockbox */ function setLockbox( address _lockbox ) external; /** * @notice Updates the limits of any bridge * @dev Can only be called by the owner * @param _mintingLimit The updated minting limit we are setting to the bridge * @param _burningLimit The updated burning limit we are setting to the bridge * @param _bridge The address of the bridge we are setting the limits too */ function setLimits(address _bridge, uint256 _mintingLimit, uint256 _burningLimit) external; /** * @notice Returns the max limit of a minter * * @param _minter The minter we are viewing the limits of * @return _limit The limit the minter has */ function mintingMaxLimitOf( address _minter ) external view returns (uint256 _limit); /** * @notice Returns the max limit of a bridge * * @param _bridge the bridge we are viewing the limits of * @return _limit The limit the bridge has */ function burningMaxLimitOf( address _bridge ) external view returns (uint256 _limit); /** * @notice Returns the current limit of a minter * * @param _minter The minter we are viewing the limits of * @return _limit The limit the minter has */ function mintingCurrentLimitOf( address _minter ) external view returns (uint256 _limit); /** * @notice Returns the current limit of a bridge * * @param _bridge the bridge we are viewing the limits of * @return _limit The limit the bridge has */ function burningCurrentLimitOf( address _bridge ) external view returns (uint256 _limit); /** * @notice Mints tokens for a user * @dev Can only be called by a minter * @param _user The address of the user who needs tokens minted * @param _amount The amount of tokens being minted */ function mint(address _user, uint256 _amount) external; /** * @notice Burns tokens for a user * @dev Can only be called by a minter * @param _user The address of the user who needs tokens burned * @param _amount The amount of tokens being burned */ function burn(address _user, uint256 _amount) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.2; /// @dev Interface of the ERC20 standard as defined in the EIP. /// @dev This includes the optional name, symbol, and decimals metadata. interface IERC20 { /// @dev Emitted when `value` tokens are moved from one account (`from`) to another (`to`). event Transfer(address indexed from, address indexed to, uint256 value); /// @dev Emitted when the allowance of a `spender` for an `owner` is set, where `value` /// is the new allowance. event Approval(address indexed owner, address indexed spender, uint256 value); /// @notice Returns the amount of tokens in existence. function totalSupply() external view returns (uint256); /// @notice Returns the amount of tokens owned by `account`. function balanceOf(address account) external view returns (uint256); /// @notice Moves `amount` tokens from the caller's account to `to`. function transfer(address to, uint256 amount) external returns (bool); /// @notice Returns the remaining number of tokens that `spender` is allowed /// to spend on behalf of `owner` function allowance(address owner, address spender) external view returns (uint256); /// @notice Sets `amount` as the allowance of `spender` over the caller's tokens. /// @dev Be aware of front-running risks: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 function approve(address spender, uint256 amount) external returns (bool); /// @notice Moves `amount` tokens from `from` to `to` using the allowance mechanism. /// `amount` is then deducted from the caller's allowance. function transferFrom(address from, address to, uint256 amount) external returns (bool); /// @notice Returns the name of the token. function name() external view returns (string memory); /// @notice Returns the symbol of the token. function symbol() external view returns (string memory); /// @notice Returns the decimals places of the token. function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.23; // Interfaces import {IXERC20} from '@xERC20/interfaces/IXERC20.sol'; import {IERC7802} from 'interfaces/external/IERC7802.sol'; /// @title ICrosschainERC20 /// @notice This interface is available on the CrosschainERC20 contract. interface ICrosschainERC20 is IXERC20, IERC7802 {}
// SPDX-License-Identifier: MIT pragma solidity ^0.8.23; import {IERC165} from 'forge-std/interfaces/IERC165.sol'; /// @title ERC-7802 Crosschain Fungibility Extension for ERC-20 /// @dev See https://eips.ethereum.org/EIPS/eip-7802 /// @dev Note: the ERC-165 identifier for this interface is 0x3333199400000000000000000000000000000000000000000000000000000000. interface IERC7802 is IERC165 { /// @notice Emitted when tokens are minted by a bridge. /// @param to The address of the recipient. /// @param amount The amount of tokens minted. /// @param bridge The address of the bridge that minted the tokens. event CrosschainMint(address indexed to, uint256 amount, address indexed bridge); /// @notice Emitted when tokens are burned by a bridge. /// @param from The address of the sender. /// @param amount The amount of tokens burned. /// @param bridge The address of the bridge that burned the tokens. event CrosschainBurn(address indexed from, uint256 amount, address indexed bridge); /// @notice Mints tokens to the recipient. /// @param to The address of the recipient. /// @param amount The amount of tokens to mint. function crosschainMint(address to, uint256 amount) external; /// @notice Burns tokens from the sender. /// @param from The address of the sender. /// @param amount The amount of tokens to burn. function crosschainBurn(address from, uint256 amount) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /// @notice Simple ERC20 + EIP-2612 implementation. /// @author Solady (https://github.com/vectorized/solady/blob/main/src/tokens/ERC20.sol) /// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC20.sol) /// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol) /// /// @dev Note: /// - The ERC20 standard allows minting and transferring to and from the zero address, /// minting and transferring zero tokens, as well as self-approvals. /// For performance, this implementation WILL NOT revert for such actions. /// Please add any checks with overrides if desired. /// - The `permit` function uses the ecrecover precompile (0x1). /// /// If you are overriding: /// - NEVER violate the ERC20 invariant: /// the total sum of all balances must be equal to `totalSupply()`. /// - Check that the overridden function is actually used in the function you want to /// change the behavior of. Much of the code has been manually inlined for performance. abstract contract ERC20 { /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* CUSTOM ERRORS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev The total supply has overflowed. error TotalSupplyOverflow(); /// @dev The allowance has overflowed. error AllowanceOverflow(); /// @dev The allowance has underflowed. error AllowanceUnderflow(); /// @dev Insufficient balance. error InsufficientBalance(); /// @dev Insufficient allowance. error InsufficientAllowance(); /// @dev The permit is invalid. error InvalidPermit(); /// @dev The permit has expired. error PermitExpired(); /// @dev The allowance of Permit2 is fixed at infinity. error Permit2AllowanceIsFixedAtInfinity(); /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* EVENTS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Emitted when `amount` tokens is transferred from `from` to `to`. event Transfer(address indexed from, address indexed to, uint256 amount); /// @dev Emitted when `amount` tokens is approved by `owner` to be used by `spender`. event Approval(address indexed owner, address indexed spender, uint256 amount); /// @dev `keccak256(bytes("Transfer(address,address,uint256)"))`. uint256 private constant _TRANSFER_EVENT_SIGNATURE = 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef; /// @dev `keccak256(bytes("Approval(address,address,uint256)"))`. uint256 private constant _APPROVAL_EVENT_SIGNATURE = 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925; /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* STORAGE */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev The storage slot for the total supply. uint256 private constant _TOTAL_SUPPLY_SLOT = 0x05345cdf77eb68f44c; /// @dev The balance slot of `owner` is given by: /// ``` /// mstore(0x0c, _BALANCE_SLOT_SEED) /// mstore(0x00, owner) /// let balanceSlot := keccak256(0x0c, 0x20) /// ``` uint256 private constant _BALANCE_SLOT_SEED = 0x87a211a2; /// @dev The allowance slot of (`owner`, `spender`) is given by: /// ``` /// mstore(0x20, spender) /// mstore(0x0c, _ALLOWANCE_SLOT_SEED) /// mstore(0x00, owner) /// let allowanceSlot := keccak256(0x0c, 0x34) /// ``` uint256 private constant _ALLOWANCE_SLOT_SEED = 0x7f5e9f20; /// @dev The nonce slot of `owner` is given by: /// ``` /// mstore(0x0c, _NONCES_SLOT_SEED) /// mstore(0x00, owner) /// let nonceSlot := keccak256(0x0c, 0x20) /// ``` uint256 private constant _NONCES_SLOT_SEED = 0x38377508; /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* CONSTANTS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev `(_NONCES_SLOT_SEED << 16) | 0x1901`. uint256 private constant _NONCES_SLOT_SEED_WITH_SIGNATURE_PREFIX = 0x383775081901; /// @dev `keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)")`. bytes32 private constant _DOMAIN_TYPEHASH = 0x8b73c3c69bb8fe3d512ecc4cf759cc79239f7b179b0ffacaa9a75d522b39400f; /// @dev `keccak256("1")`. /// If you need to use a different version, override `_versionHash`. bytes32 private constant _DEFAULT_VERSION_HASH = 0xc89efdaa54c0f20c7adf612882df0950f5a951637e0307cdcb4c672f298b8bc6; /// @dev `keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)")`. bytes32 private constant _PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9; /// @dev The canonical Permit2 address. /// For signature-based allowance granting for single transaction ERC20 `transferFrom`. /// To enable, override `_givePermit2InfiniteAllowance()`. /// [Github](https://github.com/Uniswap/permit2) /// [Etherscan](https://etherscan.io/address/0x000000000022D473030F116dDEE9F6B43aC78BA3) address internal constant _PERMIT2 = 0x000000000022D473030F116dDEE9F6B43aC78BA3; /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* ERC20 METADATA */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Returns the name of the token. function name() public view virtual returns (string memory); /// @dev Returns the symbol of the token. function symbol() public view virtual returns (string memory); /// @dev Returns the decimals places of the token. function decimals() public view virtual returns (uint8) { return 18; } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* ERC20 */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Returns the amount of tokens in existence. function totalSupply() public view virtual returns (uint256 result) { /// @solidity memory-safe-assembly assembly { result := sload(_TOTAL_SUPPLY_SLOT) } } /// @dev Returns the amount of tokens owned by `owner`. function balanceOf(address owner) public view virtual returns (uint256 result) { /// @solidity memory-safe-assembly assembly { mstore(0x0c, _BALANCE_SLOT_SEED) mstore(0x00, owner) result := sload(keccak256(0x0c, 0x20)) } } /// @dev Returns the amount of tokens that `spender` can spend on behalf of `owner`. function allowance(address owner, address spender) public view virtual returns (uint256 result) { if (_givePermit2InfiniteAllowance()) { if (spender == _PERMIT2) return type(uint256).max; } /// @solidity memory-safe-assembly assembly { mstore(0x20, spender) mstore(0x0c, _ALLOWANCE_SLOT_SEED) mstore(0x00, owner) result := sload(keccak256(0x0c, 0x34)) } } /// @dev Sets `amount` as the allowance of `spender` over the caller's tokens. /// /// Emits a {Approval} event. function approve(address spender, uint256 amount) public virtual returns (bool) { if (_givePermit2InfiniteAllowance()) { /// @solidity memory-safe-assembly assembly { // If `spender == _PERMIT2 && amount != type(uint256).max`. if iszero(or(xor(shr(96, shl(96, spender)), _PERMIT2), iszero(not(amount)))) { mstore(0x00, 0x3f68539a) // `Permit2AllowanceIsFixedAtInfinity()`. revert(0x1c, 0x04) } } } /// @solidity memory-safe-assembly assembly { // Compute the allowance slot and store the amount. mstore(0x20, spender) mstore(0x0c, _ALLOWANCE_SLOT_SEED) mstore(0x00, caller()) sstore(keccak256(0x0c, 0x34), amount) // Emit the {Approval} event. mstore(0x00, amount) log3(0x00, 0x20, _APPROVAL_EVENT_SIGNATURE, caller(), shr(96, mload(0x2c))) } return true; } /// @dev Transfer `amount` tokens from the caller to `to`. /// /// Requirements: /// - `from` must at least have `amount`. /// /// Emits a {Transfer} event. function transfer(address to, uint256 amount) public virtual returns (bool) { _beforeTokenTransfer(msg.sender, to, amount); /// @solidity memory-safe-assembly assembly { // Compute the balance slot and load its value. mstore(0x0c, _BALANCE_SLOT_SEED) mstore(0x00, caller()) let fromBalanceSlot := keccak256(0x0c, 0x20) let fromBalance := sload(fromBalanceSlot) // Revert if insufficient balance. if gt(amount, fromBalance) { mstore(0x00, 0xf4d678b8) // `InsufficientBalance()`. revert(0x1c, 0x04) } // Subtract and store the updated balance. sstore(fromBalanceSlot, sub(fromBalance, amount)) // Compute the balance slot of `to`. mstore(0x00, to) let toBalanceSlot := keccak256(0x0c, 0x20) // Add and store the updated balance of `to`. // Will not overflow because the sum of all user balances // cannot exceed the maximum uint256 value. sstore(toBalanceSlot, add(sload(toBalanceSlot), amount)) // Emit the {Transfer} event. mstore(0x20, amount) log3(0x20, 0x20, _TRANSFER_EVENT_SIGNATURE, caller(), shr(96, mload(0x0c))) } _afterTokenTransfer(msg.sender, to, amount); return true; } /// @dev Transfers `amount` tokens from `from` to `to`. /// /// Note: Does not update the allowance if it is the maximum uint256 value. /// /// Requirements: /// - `from` must at least have `amount`. /// - The caller must have at least `amount` of allowance to transfer the tokens of `from`. /// /// Emits a {Transfer} event. function transferFrom(address from, address to, uint256 amount) public virtual returns (bool) { _beforeTokenTransfer(from, to, amount); // Code duplication is for zero-cost abstraction if possible. if (_givePermit2InfiniteAllowance()) { /// @solidity memory-safe-assembly assembly { let from_ := shl(96, from) if iszero(eq(caller(), _PERMIT2)) { // Compute the allowance slot and load its value. mstore(0x20, caller()) mstore(0x0c, or(from_, _ALLOWANCE_SLOT_SEED)) let allowanceSlot := keccak256(0x0c, 0x34) let allowance_ := sload(allowanceSlot) // If the allowance is not the maximum uint256 value. if not(allowance_) { // Revert if the amount to be transferred exceeds the allowance. if gt(amount, allowance_) { mstore(0x00, 0x13be252b) // `InsufficientAllowance()`. revert(0x1c, 0x04) } // Subtract and store the updated allowance. sstore(allowanceSlot, sub(allowance_, amount)) } } // Compute the balance slot and load its value. mstore(0x0c, or(from_, _BALANCE_SLOT_SEED)) let fromBalanceSlot := keccak256(0x0c, 0x20) let fromBalance := sload(fromBalanceSlot) // Revert if insufficient balance. if gt(amount, fromBalance) { mstore(0x00, 0xf4d678b8) // `InsufficientBalance()`. revert(0x1c, 0x04) } // Subtract and store the updated balance. sstore(fromBalanceSlot, sub(fromBalance, amount)) // Compute the balance slot of `to`. mstore(0x00, to) let toBalanceSlot := keccak256(0x0c, 0x20) // Add and store the updated balance of `to`. // Will not overflow because the sum of all user balances // cannot exceed the maximum uint256 value. sstore(toBalanceSlot, add(sload(toBalanceSlot), amount)) // Emit the {Transfer} event. mstore(0x20, amount) log3(0x20, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, from_), shr(96, mload(0x0c))) } } else { /// @solidity memory-safe-assembly assembly { let from_ := shl(96, from) // Compute the allowance slot and load its value. mstore(0x20, caller()) mstore(0x0c, or(from_, _ALLOWANCE_SLOT_SEED)) let allowanceSlot := keccak256(0x0c, 0x34) let allowance_ := sload(allowanceSlot) // If the allowance is not the maximum uint256 value. if not(allowance_) { // Revert if the amount to be transferred exceeds the allowance. if gt(amount, allowance_) { mstore(0x00, 0x13be252b) // `InsufficientAllowance()`. revert(0x1c, 0x04) } // Subtract and store the updated allowance. sstore(allowanceSlot, sub(allowance_, amount)) } // Compute the balance slot and load its value. mstore(0x0c, or(from_, _BALANCE_SLOT_SEED)) let fromBalanceSlot := keccak256(0x0c, 0x20) let fromBalance := sload(fromBalanceSlot) // Revert if insufficient balance. if gt(amount, fromBalance) { mstore(0x00, 0xf4d678b8) // `InsufficientBalance()`. revert(0x1c, 0x04) } // Subtract and store the updated balance. sstore(fromBalanceSlot, sub(fromBalance, amount)) // Compute the balance slot of `to`. mstore(0x00, to) let toBalanceSlot := keccak256(0x0c, 0x20) // Add and store the updated balance of `to`. // Will not overflow because the sum of all user balances // cannot exceed the maximum uint256 value. sstore(toBalanceSlot, add(sload(toBalanceSlot), amount)) // Emit the {Transfer} event. mstore(0x20, amount) log3(0x20, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, from_), shr(96, mload(0x0c))) } } _afterTokenTransfer(from, to, amount); return true; } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* EIP-2612 */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev For more performance, override to return the constant value /// of `keccak256(bytes(name()))` if `name()` will never change. function _constantNameHash() internal view virtual returns (bytes32 result) {} /// @dev If you need a different value, override this function. function _versionHash() internal view virtual returns (bytes32 result) { result = _DEFAULT_VERSION_HASH; } /// @dev For inheriting contracts to increment the nonce. function _incrementNonce(address owner) internal virtual { /// @solidity memory-safe-assembly assembly { mstore(0x0c, _NONCES_SLOT_SEED) mstore(0x00, owner) let nonceSlot := keccak256(0x0c, 0x20) sstore(nonceSlot, add(1, sload(nonceSlot))) } } /// @dev Returns the current nonce for `owner`. /// This value is used to compute the signature for EIP-2612 permit. function nonces(address owner) public view virtual returns (uint256 result) { /// @solidity memory-safe-assembly assembly { // Compute the nonce slot and load its value. mstore(0x0c, _NONCES_SLOT_SEED) mstore(0x00, owner) result := sload(keccak256(0x0c, 0x20)) } } /// @dev Sets `value` as the allowance of `spender` over the tokens of `owner`, /// authorized by a signed approval by `owner`. /// /// Emits a {Approval} event. function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public virtual { if (_givePermit2InfiniteAllowance()) { /// @solidity memory-safe-assembly assembly { // If `spender == _PERMIT2 && value != type(uint256).max`. if iszero(or(xor(shr(96, shl(96, spender)), _PERMIT2), iszero(not(value)))) { mstore(0x00, 0x3f68539a) // `Permit2AllowanceIsFixedAtInfinity()`. revert(0x1c, 0x04) } } } bytes32 nameHash = _constantNameHash(); // We simply calculate it on-the-fly to allow for cases where the `name` may change. if (nameHash == bytes32(0)) nameHash = keccak256(bytes(name())); bytes32 versionHash = _versionHash(); /// @solidity memory-safe-assembly assembly { // Revert if the block timestamp is greater than `deadline`. if gt(timestamp(), deadline) { mstore(0x00, 0x1a15a3cc) // `PermitExpired()`. revert(0x1c, 0x04) } let m := mload(0x40) // Grab the free memory pointer. // Clean the upper 96 bits. owner := shr(96, shl(96, owner)) spender := shr(96, shl(96, spender)) // Compute the nonce slot and load its value. mstore(0x0e, _NONCES_SLOT_SEED_WITH_SIGNATURE_PREFIX) mstore(0x00, owner) let nonceSlot := keccak256(0x0c, 0x20) let nonceValue := sload(nonceSlot) // Prepare the domain separator. mstore(m, _DOMAIN_TYPEHASH) mstore(add(m, 0x20), nameHash) mstore(add(m, 0x40), versionHash) mstore(add(m, 0x60), chainid()) mstore(add(m, 0x80), address()) mstore(0x2e, keccak256(m, 0xa0)) // Prepare the struct hash. mstore(m, _PERMIT_TYPEHASH) mstore(add(m, 0x20), owner) mstore(add(m, 0x40), spender) mstore(add(m, 0x60), value) mstore(add(m, 0x80), nonceValue) mstore(add(m, 0xa0), deadline) mstore(0x4e, keccak256(m, 0xc0)) // Prepare the ecrecover calldata. mstore(0x00, keccak256(0x2c, 0x42)) mstore(0x20, and(0xff, v)) mstore(0x40, r) mstore(0x60, s) let t := staticcall(gas(), 1, 0x00, 0x80, 0x20, 0x20) // If the ecrecover fails, the returndatasize will be 0x00, // `owner` will be checked if it equals the hash at 0x00, // which evaluates to false (i.e. 0), and we will revert. // If the ecrecover succeeds, the returndatasize will be 0x20, // `owner` will be compared against the returned address at 0x20. if iszero(eq(mload(returndatasize()), owner)) { mstore(0x00, 0xddafbaef) // `InvalidPermit()`. revert(0x1c, 0x04) } // Increment and store the updated nonce. sstore(nonceSlot, add(nonceValue, t)) // `t` is 1 if ecrecover succeeds. // Compute the allowance slot and store the value. // The `owner` is already at slot 0x20. mstore(0x40, or(shl(160, _ALLOWANCE_SLOT_SEED), spender)) sstore(keccak256(0x2c, 0x34), value) // Emit the {Approval} event. log3(add(m, 0x60), 0x20, _APPROVAL_EVENT_SIGNATURE, owner, spender) mstore(0x40, m) // Restore the free memory pointer. mstore(0x60, 0) // Restore the zero pointer. } } /// @dev Returns the EIP-712 domain separator for the EIP-2612 permit. function DOMAIN_SEPARATOR() public view virtual returns (bytes32 result) { bytes32 nameHash = _constantNameHash(); // We simply calculate it on-the-fly to allow for cases where the `name` may change. if (nameHash == bytes32(0)) nameHash = keccak256(bytes(name())); bytes32 versionHash = _versionHash(); /// @solidity memory-safe-assembly assembly { let m := mload(0x40) // Grab the free memory pointer. mstore(m, _DOMAIN_TYPEHASH) mstore(add(m, 0x20), nameHash) mstore(add(m, 0x40), versionHash) mstore(add(m, 0x60), chainid()) mstore(add(m, 0x80), address()) result := keccak256(m, 0xa0) } } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* INTERNAL MINT FUNCTIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Mints `amount` tokens to `to`, increasing the total supply. /// /// Emits a {Transfer} event. function _mint(address to, uint256 amount) internal virtual { _beforeTokenTransfer(address(0), to, amount); /// @solidity memory-safe-assembly assembly { let totalSupplyBefore := sload(_TOTAL_SUPPLY_SLOT) let totalSupplyAfter := add(totalSupplyBefore, amount) // Revert if the total supply overflows. if lt(totalSupplyAfter, totalSupplyBefore) { mstore(0x00, 0xe5cfe957) // `TotalSupplyOverflow()`. revert(0x1c, 0x04) } // Store the updated total supply. sstore(_TOTAL_SUPPLY_SLOT, totalSupplyAfter) // Compute the balance slot and load its value. mstore(0x0c, _BALANCE_SLOT_SEED) mstore(0x00, to) let toBalanceSlot := keccak256(0x0c, 0x20) // Add and store the updated balance. sstore(toBalanceSlot, add(sload(toBalanceSlot), amount)) // Emit the {Transfer} event. mstore(0x20, amount) log3(0x20, 0x20, _TRANSFER_EVENT_SIGNATURE, 0, shr(96, mload(0x0c))) } _afterTokenTransfer(address(0), to, amount); } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* INTERNAL BURN FUNCTIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Burns `amount` tokens from `from`, reducing the total supply. /// /// Emits a {Transfer} event. function _burn(address from, uint256 amount) internal virtual { _beforeTokenTransfer(from, address(0), amount); /// @solidity memory-safe-assembly assembly { // Compute the balance slot and load its value. mstore(0x0c, _BALANCE_SLOT_SEED) mstore(0x00, from) let fromBalanceSlot := keccak256(0x0c, 0x20) let fromBalance := sload(fromBalanceSlot) // Revert if insufficient balance. if gt(amount, fromBalance) { mstore(0x00, 0xf4d678b8) // `InsufficientBalance()`. revert(0x1c, 0x04) } // Subtract and store the updated balance. sstore(fromBalanceSlot, sub(fromBalance, amount)) // Subtract and store the updated total supply. sstore(_TOTAL_SUPPLY_SLOT, sub(sload(_TOTAL_SUPPLY_SLOT), amount)) // Emit the {Transfer} event. mstore(0x00, amount) log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, shl(96, from)), 0) } _afterTokenTransfer(from, address(0), amount); } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* INTERNAL TRANSFER FUNCTIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Moves `amount` of tokens from `from` to `to`. function _transfer(address from, address to, uint256 amount) internal virtual { _beforeTokenTransfer(from, to, amount); /// @solidity memory-safe-assembly assembly { let from_ := shl(96, from) // Compute the balance slot and load its value. mstore(0x0c, or(from_, _BALANCE_SLOT_SEED)) let fromBalanceSlot := keccak256(0x0c, 0x20) let fromBalance := sload(fromBalanceSlot) // Revert if insufficient balance. if gt(amount, fromBalance) { mstore(0x00, 0xf4d678b8) // `InsufficientBalance()`. revert(0x1c, 0x04) } // Subtract and store the updated balance. sstore(fromBalanceSlot, sub(fromBalance, amount)) // Compute the balance slot of `to`. mstore(0x00, to) let toBalanceSlot := keccak256(0x0c, 0x20) // Add and store the updated balance of `to`. // Will not overflow because the sum of all user balances // cannot exceed the maximum uint256 value. sstore(toBalanceSlot, add(sload(toBalanceSlot), amount)) // Emit the {Transfer} event. mstore(0x20, amount) log3(0x20, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, from_), shr(96, mload(0x0c))) } _afterTokenTransfer(from, to, amount); } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* INTERNAL ALLOWANCE FUNCTIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Updates the allowance of `owner` for `spender` based on spent `amount`. function _spendAllowance(address owner, address spender, uint256 amount) internal virtual { if (_givePermit2InfiniteAllowance()) { if (spender == _PERMIT2) return; // Do nothing, as allowance is infinite. } /// @solidity memory-safe-assembly assembly { // Compute the allowance slot and load its value. mstore(0x20, spender) mstore(0x0c, _ALLOWANCE_SLOT_SEED) mstore(0x00, owner) let allowanceSlot := keccak256(0x0c, 0x34) let allowance_ := sload(allowanceSlot) // If the allowance is not the maximum uint256 value. if not(allowance_) { // Revert if the amount to be transferred exceeds the allowance. if gt(amount, allowance_) { mstore(0x00, 0x13be252b) // `InsufficientAllowance()`. revert(0x1c, 0x04) } // Subtract and store the updated allowance. sstore(allowanceSlot, sub(allowance_, amount)) } } } /// @dev Sets `amount` as the allowance of `spender` over the tokens of `owner`. /// /// Emits a {Approval} event. function _approve(address owner, address spender, uint256 amount) internal virtual { if (_givePermit2InfiniteAllowance()) { /// @solidity memory-safe-assembly assembly { // If `spender == _PERMIT2 && amount != type(uint256).max`. if iszero(or(xor(shr(96, shl(96, spender)), _PERMIT2), iszero(not(amount)))) { mstore(0x00, 0x3f68539a) // `Permit2AllowanceIsFixedAtInfinity()`. revert(0x1c, 0x04) } } } /// @solidity memory-safe-assembly assembly { let owner_ := shl(96, owner) // Compute the allowance slot and store the amount. mstore(0x20, spender) mstore(0x0c, or(owner_, _ALLOWANCE_SLOT_SEED)) sstore(keccak256(0x0c, 0x34), amount) // Emit the {Approval} event. mstore(0x00, amount) log3(0x00, 0x20, _APPROVAL_EVENT_SIGNATURE, shr(96, owner_), shr(96, mload(0x2c))) } } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* HOOKS TO OVERRIDE */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Hook that is called before any transfer of tokens. /// This includes minting and burning. function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {} /// @dev Hook that is called after any transfer of tokens. /// This includes minting and burning. function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {} /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* PERMIT2 */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Returns whether to fix the Permit2 contract's allowance at infinity. /// /// This value should be kept constant after contract initialization, /// or else the actual allowance values may not match with the {Approval} events. /// For best performance, return a compile-time constant for zero-cost abstraction. function _givePermit2InfiniteAllowance() internal view virtual returns (bool) { return true; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /// @notice Simple single owner authorization mixin. /// @author Solady (https://github.com/vectorized/solady/blob/main/src/auth/Ownable.sol) /// /// @dev Note: /// This implementation does NOT auto-initialize the owner to `msg.sender`. /// You MUST call the `_initializeOwner` in the constructor / initializer. /// /// While the ownable portion follows /// [EIP-173](https://eips.ethereum.org/EIPS/eip-173) for compatibility, /// the nomenclature for the 2-step ownership handover may be unique to this codebase. abstract contract Ownable { /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* CUSTOM ERRORS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev The caller is not authorized to call the function. error Unauthorized(); /// @dev The `newOwner` cannot be the zero address. error NewOwnerIsZeroAddress(); /// @dev The `pendingOwner` does not have a valid handover request. error NoHandoverRequest(); /// @dev Cannot double-initialize. error AlreadyInitialized(); /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* EVENTS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev The ownership is transferred from `oldOwner` to `newOwner`. /// This event is intentionally kept the same as OpenZeppelin's Ownable to be /// compatible with indexers and [EIP-173](https://eips.ethereum.org/EIPS/eip-173), /// despite it not being as lightweight as a single argument event. event OwnershipTransferred(address indexed oldOwner, address indexed newOwner); /// @dev An ownership handover to `pendingOwner` has been requested. event OwnershipHandoverRequested(address indexed pendingOwner); /// @dev The ownership handover to `pendingOwner` has been canceled. event OwnershipHandoverCanceled(address indexed pendingOwner); /// @dev `keccak256(bytes("OwnershipTransferred(address,address)"))`. uint256 private constant _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE = 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0; /// @dev `keccak256(bytes("OwnershipHandoverRequested(address)"))`. uint256 private constant _OWNERSHIP_HANDOVER_REQUESTED_EVENT_SIGNATURE = 0xdbf36a107da19e49527a7176a1babf963b4b0ff8cde35ee35d6cd8f1f9ac7e1d; /// @dev `keccak256(bytes("OwnershipHandoverCanceled(address)"))`. uint256 private constant _OWNERSHIP_HANDOVER_CANCELED_EVENT_SIGNATURE = 0xfa7b8eab7da67f412cc9575ed43464468f9bfbae89d1675917346ca6d8fe3c92; /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* STORAGE */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev The owner slot is given by: /// `bytes32(~uint256(uint32(bytes4(keccak256("_OWNER_SLOT_NOT")))))`. /// It is intentionally chosen to be a high value /// to avoid collision with lower slots. /// The choice of manual storage layout is to enable compatibility /// with both regular and upgradeable contracts. bytes32 internal constant _OWNER_SLOT = 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffff74873927; /// The ownership handover slot of `newOwner` is given by: /// ``` /// mstore(0x00, or(shl(96, user), _HANDOVER_SLOT_SEED)) /// let handoverSlot := keccak256(0x00, 0x20) /// ``` /// It stores the expiry timestamp of the two-step ownership handover. uint256 private constant _HANDOVER_SLOT_SEED = 0x389a75e1; /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* INTERNAL FUNCTIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Override to return true to make `_initializeOwner` prevent double-initialization. function _guardInitializeOwner() internal pure virtual returns (bool guard) {} /// @dev Initializes the owner directly without authorization guard. /// This function must be called upon initialization, /// regardless of whether the contract is upgradeable or not. /// This is to enable generalization to both regular and upgradeable contracts, /// and to save gas in case the initial owner is not the caller. /// For performance reasons, this function will not check if there /// is an existing owner. function _initializeOwner(address newOwner) internal virtual { if (_guardInitializeOwner()) { /// @solidity memory-safe-assembly assembly { let ownerSlot := _OWNER_SLOT if sload(ownerSlot) { mstore(0x00, 0x0dc149f0) // `AlreadyInitialized()`. revert(0x1c, 0x04) } // Clean the upper 96 bits. newOwner := shr(96, shl(96, newOwner)) // Store the new value. sstore(ownerSlot, or(newOwner, shl(255, iszero(newOwner)))) // Emit the {OwnershipTransferred} event. log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, 0, newOwner) } } else { /// @solidity memory-safe-assembly assembly { // Clean the upper 96 bits. newOwner := shr(96, shl(96, newOwner)) // Store the new value. sstore(_OWNER_SLOT, newOwner) // Emit the {OwnershipTransferred} event. log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, 0, newOwner) } } } /// @dev Sets the owner directly without authorization guard. function _setOwner(address newOwner) internal virtual { if (_guardInitializeOwner()) { /// @solidity memory-safe-assembly assembly { let ownerSlot := _OWNER_SLOT // Clean the upper 96 bits. newOwner := shr(96, shl(96, newOwner)) // Emit the {OwnershipTransferred} event. log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, sload(ownerSlot), newOwner) // Store the new value. sstore(ownerSlot, or(newOwner, shl(255, iszero(newOwner)))) } } else { /// @solidity memory-safe-assembly assembly { let ownerSlot := _OWNER_SLOT // Clean the upper 96 bits. newOwner := shr(96, shl(96, newOwner)) // Emit the {OwnershipTransferred} event. log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, sload(ownerSlot), newOwner) // Store the new value. sstore(ownerSlot, newOwner) } } } /// @dev Throws if the sender is not the owner. function _checkOwner() internal view virtual { /// @solidity memory-safe-assembly assembly { // If the caller is not the stored owner, revert. if iszero(eq(caller(), sload(_OWNER_SLOT))) { mstore(0x00, 0x82b42900) // `Unauthorized()`. revert(0x1c, 0x04) } } } /// @dev Returns how long a two-step ownership handover is valid for in seconds. /// Override to return a different value if needed. /// Made internal to conserve bytecode. Wrap it in a public function if needed. function _ownershipHandoverValidFor() internal view virtual returns (uint64) { return 48 * 3600; } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* PUBLIC UPDATE FUNCTIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Allows the owner to transfer the ownership to `newOwner`. function transferOwnership(address newOwner) public payable virtual onlyOwner { /// @solidity memory-safe-assembly assembly { if iszero(shl(96, newOwner)) { mstore(0x00, 0x7448fbae) // `NewOwnerIsZeroAddress()`. revert(0x1c, 0x04) } } _setOwner(newOwner); } /// @dev Allows the owner to renounce their ownership. function renounceOwnership() public payable virtual onlyOwner { _setOwner(address(0)); } /// @dev Request a two-step ownership handover to the caller. /// The request will automatically expire in 48 hours (172800 seconds) by default. function requestOwnershipHandover() public payable virtual { unchecked { uint256 expires = block.timestamp + _ownershipHandoverValidFor(); /// @solidity memory-safe-assembly assembly { // Compute and set the handover slot to `expires`. mstore(0x0c, _HANDOVER_SLOT_SEED) mstore(0x00, caller()) sstore(keccak256(0x0c, 0x20), expires) // Emit the {OwnershipHandoverRequested} event. log2(0, 0, _OWNERSHIP_HANDOVER_REQUESTED_EVENT_SIGNATURE, caller()) } } } /// @dev Cancels the two-step ownership handover to the caller, if any. function cancelOwnershipHandover() public payable virtual { /// @solidity memory-safe-assembly assembly { // Compute and set the handover slot to 0. mstore(0x0c, _HANDOVER_SLOT_SEED) mstore(0x00, caller()) sstore(keccak256(0x0c, 0x20), 0) // Emit the {OwnershipHandoverCanceled} event. log2(0, 0, _OWNERSHIP_HANDOVER_CANCELED_EVENT_SIGNATURE, caller()) } } /// @dev Allows the owner to complete the two-step ownership handover to `pendingOwner`. /// Reverts if there is no existing ownership handover requested by `pendingOwner`. function completeOwnershipHandover(address pendingOwner) public payable virtual onlyOwner { /// @solidity memory-safe-assembly assembly { // Compute and set the handover slot to 0. mstore(0x0c, _HANDOVER_SLOT_SEED) mstore(0x00, pendingOwner) let handoverSlot := keccak256(0x0c, 0x20) // If the handover does not exist, or has expired. if gt(timestamp(), sload(handoverSlot)) { mstore(0x00, 0x6f5e8818) // `NoHandoverRequest()`. revert(0x1c, 0x04) } // Set the handover slot to 0. sstore(handoverSlot, 0) } _setOwner(pendingOwner); } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* PUBLIC READ FUNCTIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Returns the owner of the contract. function owner() public view virtual returns (address result) { /// @solidity memory-safe-assembly assembly { result := sload(_OWNER_SLOT) } } /// @dev Returns the expiry timestamp for the two-step ownership handover to `pendingOwner`. function ownershipHandoverExpiresAt(address pendingOwner) public view virtual returns (uint256 result) { /// @solidity memory-safe-assembly assembly { // Compute the handover slot. mstore(0x0c, _HANDOVER_SLOT_SEED) mstore(0x00, pendingOwner) // Load the handover slot. result := sload(keccak256(0x0c, 0x20)) } } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* MODIFIERS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Marks a function as only callable by the owner. modifier onlyOwner() virtual { _checkOwner(); _; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.2; interface IERC165 { /// @notice Query if a contract implements an interface /// @param interfaceID The interface identifier, as specified in ERC-165 /// @dev Interface identification is specified in ERC-165. This function /// uses less than 30,000 gas. /// @return `true` if the contract implements `interfaceID` and /// `interfaceID` is not 0xffffffff, `false` otherwise function supportsInterface(bytes4 interfaceID) external view returns (bool); }
{ "remappings": [ "forge-std/=node_modules/forge-std/src/", "@xERC20/=node_modules/@defi-wonderland/xerc20/solidity/", "solady/=node_modules/solady/src/", "contracts/=src/contracts/", "interfaces/=src/interfaces/", "@defi-wonderland/=node_modules/@defi-wonderland/" ], "optimizer": { "enabled": true, "runs": 10000 }, "metadata": { "useLiteralContent": false, "bytecodeHash": "ipfs", "appendCBOR": true }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "evmVersion": "cancun", "viaIR": false, "libraries": {} }
Contract Security Audit
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Contract ABI
API[{"inputs":[{"internalType":"string","name":"__name","type":"string"},{"internalType":"string","name":"__symbol","type":"string"},{"internalType":"uint8","name":"__decimals","type":"uint8"},{"internalType":"address","name":"__factory","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AllowanceOverflow","type":"error"},{"inputs":[],"name":"AllowanceUnderflow","type":"error"},{"inputs":[],"name":"AlreadyInitialized","type":"error"},{"inputs":[],"name":"IXERC20_LimitsTooHigh","type":"error"},{"inputs":[],"name":"IXERC20_NotFactory","type":"error"},{"inputs":[],"name":"IXERC20_NotHighEnoughLimits","type":"error"},{"inputs":[],"name":"InsufficientAllowance","type":"error"},{"inputs":[],"name":"InsufficientBalance","type":"error"},{"inputs":[],"name":"InvalidPermit","type":"error"},{"inputs":[],"name":"NewOwnerIsZeroAddress","type":"error"},{"inputs":[],"name":"NoHandoverRequest","type":"error"},{"inputs":[],"name":"Permit2AllowanceIsFixedAtInfinity","type":"error"},{"inputs":[],"name":"PermitExpired","type":"error"},{"inputs":[],"name":"TotalSupplyOverflow","type":"error"},{"inputs":[],"name":"Unauthorized","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"_mintingLimit","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_burningLimit","type":"uint256"},{"indexed":true,"internalType":"address","name":"_bridge","type":"address"}],"name":"BridgeLimitsSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":true,"internalType":"address","name":"bridge","type":"address"}],"name":"CrosschainBurn","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":true,"internalType":"address","name":"bridge","type":"address"}],"name":"CrosschainMint","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_lockbox","type":"address"}],"name":"LockboxSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"pendingOwner","type":"address"}],"name":"OwnershipHandoverCanceled","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"pendingOwner","type":"address"}],"name":"OwnershipHandoverRequested","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"result","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"FACTORY","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"result","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"result","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"bridges","outputs":[{"components":[{"internalType":"uint256","name":"timestamp","type":"uint256"},{"internalType":"uint256","name":"ratePerSecond","type":"uint256"},{"internalType":"uint256","name":"maxLimit","type":"uint256"},{"internalType":"uint256","name":"currentLimit","type":"uint256"}],"internalType":"struct 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,"type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","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":"payable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000c00000000000000000000000000000000000000000000000000000000000000012000000000000000000000000c8bfbaeec5699e1e7a9a47386310e1a6a11330550000000000000000000000000000000000000000000000000000000000000009537570657273656564000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000045355505200000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : __name (string): Superseed
Arg [1] : __symbol (string): SUPR
Arg [2] : __decimals (uint8): 18
Arg [3] : __factory (address): 0xc8BFbAeEc5699e1E7a9a47386310E1a6A1133055
-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000012
Arg [3] : 000000000000000000000000c8bfbaeec5699e1e7a9a47386310e1a6a1133055
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000009
Arg [5] : 5375706572736565640000000000000000000000000000000000000000000000
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [7] : 5355505200000000000000000000000000000000000000000000000000000000
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OVERVIEW
Superseed is a network that transforms Ethereum scaling into self-repaying loans. We believe in Ethereum’s ability to enable financial freedom. Superseed extends this by maximizing capital efficiency, returning 100% of protocol revenue to our users.Multichain Portfolio | 35 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
ETH | 100.00% | $0.002087 | 42,324.6196 | $88.33 |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.