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Contract Name:
L2StandardBridge
Compiler Version
v0.8.15+commit.e14f2714
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;
// Contracts
import { StandardBridge } from "src/universal/StandardBridge.sol";
import { OptimismMintableERC20 } from "src/universal/OptimismMintableERC20.sol";
import { L1Block } from "src/L2/L1Block.sol";
// Libraries
import { Predeploys } from "src/libraries/Predeploys.sol";
// Interfaces
import { ISemver } from "src/universal/interfaces/ISemver.sol";
import { ICrossDomainMessenger } from "src/universal/interfaces/ICrossDomainMessenger.sol";
/// @custom:proxied true
/// @custom:predeploy 0x4200000000000000000000000000000000000010
/// @title L2StandardBridge
/// @notice The L2StandardBridge is responsible for transfering ETH and ERC20 tokens between L1 and
/// L2. In the case that an ERC20 token is native to L2, it will be escrowed within this
/// contract. If the ERC20 token is native to L1, it will be burnt.
/// NOTE: this contract is not intended to support all variations of ERC20 tokens. Examples
/// of some token types that may not be properly supported by this contract include, but are
/// not limited to: tokens with transfer fees, rebasing tokens, and tokens with blocklists.
contract L2StandardBridge is StandardBridge, ISemver {
/// @custom:legacy
/// @notice Emitted whenever a withdrawal from L2 to L1 is initiated.
/// @param l1Token Address of the token on L1.
/// @param l2Token Address of the corresponding token on L2.
/// @param from Address of the withdrawer.
/// @param to Address of the recipient on L1.
/// @param amount Amount of the ERC20 withdrawn.
/// @param extraData Extra data attached to the withdrawal.
event WithdrawalInitiated(
address indexed l1Token,
address indexed l2Token,
address indexed from,
address to,
uint256 amount,
bytes extraData
);
/// @custom:legacy
/// @notice Emitted whenever an ERC20 deposit is finalized.
/// @param l1Token Address of the token on L1.
/// @param l2Token Address of the corresponding token on L2.
/// @param from Address of the depositor.
/// @param to Address of the recipient on L2.
/// @param amount Amount of the ERC20 deposited.
/// @param extraData Extra data attached to the deposit.
event DepositFinalized(
address indexed l1Token,
address indexed l2Token,
address indexed from,
address to,
uint256 amount,
bytes extraData
);
/// @notice Semantic version.
/// @custom:semver 1.11.1-beta.1
function version() public pure virtual returns (string memory) {
return "1.11.1-beta.1";
}
/// @notice Constructs the L2StandardBridge contract.
constructor() StandardBridge() {
initialize({ _otherBridge: StandardBridge(payable(address(0))) });
}
/// @notice Initializer.
/// @param _otherBridge Contract for the corresponding bridge on the other chain.
function initialize(StandardBridge _otherBridge) public initializer {
__StandardBridge_init({
_messenger: ICrossDomainMessenger(Predeploys.L2_CROSS_DOMAIN_MESSENGER),
_otherBridge: _otherBridge
});
}
/// @notice Allows EOAs to bridge ETH by sending directly to the bridge.
receive() external payable override onlyEOA {
_initiateWithdrawal(
Predeploys.LEGACY_ERC20_ETH, msg.sender, msg.sender, msg.value, RECEIVE_DEFAULT_GAS_LIMIT, bytes("")
);
}
/// @inheritdoc StandardBridge
function gasPayingToken() internal view override returns (address addr_, uint8 decimals_) {
(addr_, decimals_) = L1Block(Predeploys.L1_BLOCK_ATTRIBUTES).gasPayingToken();
}
/// @custom:legacy
/// @notice Initiates a withdrawal from L2 to L1.
/// This function only works with OptimismMintableERC20 tokens or ether. Use the
/// `bridgeERC20` function to bridge native L2 tokens to L1.
/// Subject to be deprecated in the future.
/// @param _l2Token Address of the L2 token to withdraw.
/// @param _amount Amount of the L2 token to withdraw.
/// @param _minGasLimit Minimum gas limit to use for the transaction.
/// @param _extraData Extra data attached to the withdrawal.
function withdraw(
address _l2Token,
uint256 _amount,
uint32 _minGasLimit,
bytes calldata _extraData
)
external
payable
virtual
onlyEOA
{
require(isCustomGasToken() == false, "L2StandardBridge: not supported with custom gas token");
_initiateWithdrawal(_l2Token, msg.sender, msg.sender, _amount, _minGasLimit, _extraData);
}
/// @custom:legacy
/// @notice Initiates a withdrawal from L2 to L1 to a target account on L1.
/// Note that if ETH is sent to a contract on L1 and the call fails, then that ETH will
/// be locked in the L1StandardBridge. ETH may be recoverable if the call can be
/// successfully replayed by increasing the amount of gas supplied to the call. If the
/// call will fail for any amount of gas, then the ETH will be locked permanently.
/// This function only works with OptimismMintableERC20 tokens or ether. Use the
/// `bridgeERC20To` function to bridge native L2 tokens to L1.
/// Subject to be deprecated in the future.
/// @param _l2Token Address of the L2 token to withdraw.
/// @param _to Recipient account on L1.
/// @param _amount Amount of the L2 token to withdraw.
/// @param _minGasLimit Minimum gas limit to use for the transaction.
/// @param _extraData Extra data attached to the withdrawal.
function withdrawTo(
address _l2Token,
address _to,
uint256 _amount,
uint32 _minGasLimit,
bytes calldata _extraData
)
external
payable
virtual
{
require(isCustomGasToken() == false, "L2StandardBridge: not supported with custom gas token");
_initiateWithdrawal(_l2Token, msg.sender, _to, _amount, _minGasLimit, _extraData);
}
/// @custom:legacy
/// @notice Retrieves the access of the corresponding L1 bridge contract.
/// @return Address of the corresponding L1 bridge contract.
function l1TokenBridge() external view returns (address) {
return address(otherBridge);
}
/// @custom:legacy
/// @notice Internal function to initiate a withdrawal from L2 to L1 to a target account on L1.
/// @param _l2Token Address of the L2 token to withdraw.
/// @param _from Address of the withdrawer.
/// @param _to Recipient account on L1.
/// @param _amount Amount of the L2 token to withdraw.
/// @param _minGasLimit Minimum gas limit to use for the transaction.
/// @param _extraData Extra data attached to the withdrawal.
function _initiateWithdrawal(
address _l2Token,
address _from,
address _to,
uint256 _amount,
uint32 _minGasLimit,
bytes memory _extraData
)
internal
{
if (_l2Token == Predeploys.LEGACY_ERC20_ETH) {
_initiateBridgeETH(_from, _to, _amount, _minGasLimit, _extraData);
} else {
address l1Token = OptimismMintableERC20(_l2Token).l1Token();
_initiateBridgeERC20(_l2Token, l1Token, _from, _to, _amount, _minGasLimit, _extraData);
}
}
/// @notice Emits the legacy WithdrawalInitiated event followed by the ETHBridgeInitiated event.
/// This is necessary for backwards compatibility with the legacy bridge.
/// @inheritdoc StandardBridge
function _emitETHBridgeInitiated(
address _from,
address _to,
uint256 _amount,
bytes memory _extraData
)
internal
override
{
emit WithdrawalInitiated(address(0), Predeploys.LEGACY_ERC20_ETH, _from, _to, _amount, _extraData);
super._emitETHBridgeInitiated(_from, _to, _amount, _extraData);
}
/// @notice Emits the legacy DepositFinalized event followed by the ETHBridgeFinalized event.
/// This is necessary for backwards compatibility with the legacy bridge.
/// @inheritdoc StandardBridge
function _emitETHBridgeFinalized(
address _from,
address _to,
uint256 _amount,
bytes memory _extraData
)
internal
override
{
emit DepositFinalized(address(0), Predeploys.LEGACY_ERC20_ETH, _from, _to, _amount, _extraData);
super._emitETHBridgeFinalized(_from, _to, _amount, _extraData);
}
/// @notice Emits the legacy WithdrawalInitiated event followed by the ERC20BridgeInitiated
/// event. This is necessary for backwards compatibility with the legacy bridge.
/// @inheritdoc StandardBridge
function _emitERC20BridgeInitiated(
address _localToken,
address _remoteToken,
address _from,
address _to,
uint256 _amount,
bytes memory _extraData
)
internal
override
{
emit WithdrawalInitiated(_remoteToken, _localToken, _from, _to, _amount, _extraData);
super._emitERC20BridgeInitiated(_localToken, _remoteToken, _from, _to, _amount, _extraData);
}
/// @notice Emits the legacy DepositFinalized event followed by the ERC20BridgeFinalized event.
/// This is necessary for backwards compatibility with the legacy bridge.
/// @inheritdoc StandardBridge
function _emitERC20BridgeFinalized(
address _localToken,
address _remoteToken,
address _from,
address _to,
uint256 _amount,
bytes memory _extraData
)
internal
override
{
emit DepositFinalized(_remoteToken, _localToken, _from, _to, _amount, _extraData);
super._emitERC20BridgeFinalized(_localToken, _remoteToken, _from, _to, _amount, _extraData);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/Address.sol";
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
* ====
* Avoid leaving a contract uninitialized.
*
* An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
* contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
* the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() {
* _disableInitializers();
* }
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
* @custom:oz-retyped-from bool
*/
uint8 private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint8 version);
/**
* @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
* `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
*/
modifier initializer() {
bool isTopLevelCall = !_initializing;
require(
(isTopLevelCall && _initialized < 1) || (!Address.isContract(address(this)) && _initialized == 1),
"Initializable: contract is already initialized"
);
_initialized = 1;
if (isTopLevelCall) {
_initializing = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
emit Initialized(1);
}
}
/**
* @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
* contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
* used to initialize parent contracts.
*
* `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original
* initialization step. This is essential to configure modules that are added through upgrades and that require
* initialization.
*
* Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
* a contract, executing them in the right order is up to the developer or operator.
*/
modifier reinitializer(uint8 version) {
require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
_initialized = version;
_initializing = true;
_;
_initializing = false;
emit Initialized(version);
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} and {reinitializer} modifiers, directly or indirectly.
*/
modifier onlyInitializing() {
require(_initializing, "Initializable: contract is not initializing");
_;
}
/**
* @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
* Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
* to any version. It is recommended to use this to lock implementation contracts that are designed to be called
* through proxies.
*/
function _disableInitializers() internal virtual {
require(!_initializing, "Initializable: contract is initializing");
if (_initialized < type(uint8).max) {
_initialized = type(uint8).max;
emit Initialized(type(uint8).max);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.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}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* 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.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* 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 override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override 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 value {ERC20} uses, unless this function is
* 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 override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override 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 `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` 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 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
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 `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `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.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` 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.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
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.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
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 v4.6.0) (token/ERC20/extensions/draft-ERC20Permit.sol)
pragma solidity ^0.8.0;
import "./draft-IERC20Permit.sol";
import "../ERC20.sol";
import "../../../utils/cryptography/draft-EIP712.sol";
import "../../../utils/cryptography/ECDSA.sol";
import "../../../utils/Counters.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.
*
* _Available since v3.4._
*/
abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {
using Counters for Counters.Counter;
mapping(address => Counters.Counter) private _nonces;
// solhint-disable-next-line var-name-mixedcase
bytes32 private constant _PERMIT_TYPEHASH =
keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
/**
* @dev In previous versions `_PERMIT_TYPEHASH` was declared as `immutable`.
* However, to ensure consistency with the upgradeable transpiler, we will continue
* to reserve a slot.
* @custom:oz-renamed-from _PERMIT_TYPEHASH
*/
// solhint-disable-next-line var-name-mixedcase
bytes32 private _PERMIT_TYPEHASH_DEPRECATED_SLOT;
/**
* @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") {}
/**
* @dev See {IERC20Permit-permit}.
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) public virtual override {
require(block.timestamp <= deadline, "ERC20Permit: expired 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);
require(signer == owner, "ERC20Permit: invalid signature");
_approve(owner, spender, value);
}
/**
* @dev See {IERC20Permit-nonces}.
*/
function nonces(address owner) public view virtual override returns (uint256) {
return _nonces[owner].current();
}
/**
* @dev See {IERC20Permit-DOMAIN_SEPARATOR}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view override returns (bytes32) {
return _domainSeparatorV4();
}
/**
* @dev "Consume a nonce": return the current value and increment.
*
* _Available since v4.1._
*/
function _useNonce(address owner) internal virtual returns (uint256 current) {
Counters.Counter storage nonce = _nonces[owner];
current = nonce.current();
nonce.increment();
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
* @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.
*/
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].
*/
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 v4.7.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../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;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
function safePermit(
IERC20Permit token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
/**
* @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, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @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://diligence.consensys.net/posts/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/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @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, it is bubbled up by this
* function (like regular Solidity function calls).
*
* 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.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @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`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// 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(errorMessage);
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)
pragma solidity ^0.8.0;
/**
* @title Counters
* @author Matt Condon (@shrugs)
* @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
* of elements in a mapping, issuing ERC721 ids, or counting request ids.
*
* Include with `using Counters for Counters.Counter;`
*/
library Counters {
struct Counter {
// This variable should never be directly accessed by users of the library: interactions must be restricted to
// the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
// this feature: see https://github.com/ethereum/solidity/issues/4637
uint256 _value; // default: 0
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
unchecked {
counter._value += 1;
}
}
function decrement(Counter storage counter) internal {
uint256 value = counter._value;
require(value > 0, "Counter: decrement overflow");
unchecked {
counter._value = value - 1;
}
}
function reset(Counter storage counter) internal {
counter._value = 0;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
uint8 private constant _ADDRESS_LENGTH = 20;
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
*/
function toHexString(address addr) internal pure returns (string memory) {
return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.3) (utils/cryptography/ECDSA.sol)
pragma solidity ^0.8.0;
import "../Strings.sol";
/**
* @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,
InvalidSignatureV
}
function _throwError(RecoverError error) private pure {
if (error == RecoverError.NoError) {
return; // no error: do nothing
} else if (error == RecoverError.InvalidSignature) {
revert("ECDSA: invalid signature");
} else if (error == RecoverError.InvalidSignatureLength) {
revert("ECDSA: invalid signature length");
} else if (error == RecoverError.InvalidSignatureS) {
revert("ECDSA: invalid signature 's' value");
} else if (error == RecoverError.InvalidSignatureV) {
revert("ECDSA: invalid signature 'v' value");
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature` or error string. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode 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 {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]
*
* _Available since v4.3._
*/
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
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);
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode 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 {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, signature);
_throwError(error);
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]
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address, RecoverError) {
bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
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.
*
* _Available since v4.2._
*/
function recover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `v`,
* `r` and `s` signature fields separately.
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address, RecoverError) {
// 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);
}
if (v != 27 && v != 28) {
return (address(0), RecoverError.InvalidSignatureV);
}
// 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);
}
return (signer, RecoverError.NoError);
}
/**
* @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) = tryRecover(hash, v, r, s);
_throwError(error);
return recovered;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
/**
* @dev Returns an Ethereum Signed Message, created from `s`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
}
/**
* @dev Returns an Ethereum Signed Typed Data, created from a
* `domainSeparator` and a `structHash`. This produces hash corresponding
* to the one signed with the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
* JSON-RPC method as part of EIP-712.
*
* See {recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol)
pragma solidity ^0.8.0;
import "./ECDSA.sol";
/**
* @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
*
* The encoding specified in the EIP is very generic, and such a generic 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 their contracts 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].
*
* _Available since v3.4._
*/
abstract contract EIP712 {
/* solhint-disable var-name-mixedcase */
// 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 _CACHED_DOMAIN_SEPARATOR;
uint256 private immutable _CACHED_CHAIN_ID;
address private immutable _CACHED_THIS;
bytes32 private immutable _HASHED_NAME;
bytes32 private immutable _HASHED_VERSION;
bytes32 private immutable _TYPE_HASH;
/* solhint-enable var-name-mixedcase */
/**
* @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) {
bytes32 hashedName = keccak256(bytes(name));
bytes32 hashedVersion = keccak256(bytes(version));
bytes32 typeHash = keccak256(
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
);
_HASHED_NAME = hashedName;
_HASHED_VERSION = hashedVersion;
_CACHED_CHAIN_ID = block.chainid;
_CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
_CACHED_THIS = address(this);
_TYPE_HASH = typeHash;
}
/**
* @dev Returns the domain separator for the current chain.
*/
function _domainSeparatorV4() internal view returns (bytes32) {
if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) {
return _CACHED_DOMAIN_SEPARATOR;
} else {
return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
}
}
function _buildDomainSeparator(
bytes32 typeHash,
bytes32 nameHash,
bytes32 versionHash
) private view returns (bytes32) {
return keccak256(abi.encode(typeHash, nameHash, versionHash, 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 ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.2) (utils/introspection/ERC165Checker.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Library used to query support of an interface declared via {IERC165}.
*
* Note that these functions return the actual result of the query: they do not
* `revert` if an interface is not supported. It is up to the caller to decide
* what to do in these cases.
*/
library ERC165Checker {
// As per the EIP-165 spec, no interface should ever match 0xffffffff
bytes4 private constant _INTERFACE_ID_INVALID = 0xffffffff;
/**
* @dev Returns true if `account` supports the {IERC165} interface,
*/
function supportsERC165(address account) internal view returns (bool) {
// Any contract that implements ERC165 must explicitly indicate support of
// InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid
return
_supportsERC165Interface(account, type(IERC165).interfaceId) &&
!_supportsERC165Interface(account, _INTERFACE_ID_INVALID);
}
/**
* @dev Returns true if `account` supports the interface defined by
* `interfaceId`. Support for {IERC165} itself is queried automatically.
*
* See {IERC165-supportsInterface}.
*/
function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) {
// query support of both ERC165 as per the spec and support of _interfaceId
return supportsERC165(account) && _supportsERC165Interface(account, interfaceId);
}
/**
* @dev Returns a boolean array where each value corresponds to the
* interfaces passed in and whether they're supported or not. This allows
* you to batch check interfaces for a contract where your expectation
* is that some interfaces may not be supported.
*
* See {IERC165-supportsInterface}.
*
* _Available since v3.4._
*/
function getSupportedInterfaces(address account, bytes4[] memory interfaceIds)
internal
view
returns (bool[] memory)
{
// an array of booleans corresponding to interfaceIds and whether they're supported or not
bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length);
// query support of ERC165 itself
if (supportsERC165(account)) {
// query support of each interface in interfaceIds
for (uint256 i = 0; i < interfaceIds.length; i++) {
interfaceIdsSupported[i] = _supportsERC165Interface(account, interfaceIds[i]);
}
}
return interfaceIdsSupported;
}
/**
* @dev Returns true if `account` supports all the interfaces defined in
* `interfaceIds`. Support for {IERC165} itself is queried automatically.
*
* Batch-querying can lead to gas savings by skipping repeated checks for
* {IERC165} support.
*
* See {IERC165-supportsInterface}.
*/
function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) {
// query support of ERC165 itself
if (!supportsERC165(account)) {
return false;
}
// query support of each interface in _interfaceIds
for (uint256 i = 0; i < interfaceIds.length; i++) {
if (!_supportsERC165Interface(account, interfaceIds[i])) {
return false;
}
}
// all interfaces supported
return true;
}
/**
* @notice Query if a contract implements an interface, does not check ERC165 support
* @param account The address of the contract to query for support of an interface
* @param interfaceId The interface identifier, as specified in ERC-165
* @return true if the contract at account indicates support of the interface with
* identifier interfaceId, false otherwise
* @dev Assumes that account contains a contract that supports ERC165, otherwise
* the behavior of this method is undefined. This precondition can be checked
* with {supportsERC165}.
* Interface identification is specified in ERC-165.
*/
function _supportsERC165Interface(address account, bytes4 interfaceId) private view returns (bool) {
// prepare call
bytes memory encodedParams = abi.encodeWithSelector(IERC165.supportsInterface.selector, interfaceId);
// perform static call
bool success;
uint256 returnSize;
uint256 returnValue;
assembly {
success := staticcall(30000, account, add(encodedParams, 0x20), mload(encodedParams), 0x00, 0x20)
returnSize := returndatasize()
returnValue := mload(0x00)
}
return success && returnSize >= 0x20 && returnValue > 0;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
/// @notice Library for converting numbers into strings and other string operations.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/LibString.sol)
/// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/LibString.sol)
///
/// Note:
/// For performance and bytecode compactness, most of the string operations are restricted to
/// byte strings (7-bit ASCII), except where otherwise specified.
/// Usage of byte string operations on charsets with runes spanning two or more bytes
/// can lead to undefined behavior.
library LibString {
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* CUSTOM ERRORS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev The length of the output is too small to contain all the hex digits.
error HexLengthInsufficient();
/// @dev The length of the string is more than 32 bytes.
error TooBigForSmallString();
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* CONSTANTS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev The constant returned when the `search` is not found in the string.
uint256 internal constant NOT_FOUND = type(uint256).max;
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* DECIMAL OPERATIONS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev Returns the base 10 decimal representation of `value`.
function toString(uint256 value) internal pure returns (string memory str) {
/// @solidity memory-safe-assembly
assembly {
// The maximum value of a uint256 contains 78 digits (1 byte per digit), but
// we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned.
// We will need 1 word for the trailing zeros padding, 1 word for the length,
// and 3 words for a maximum of 78 digits.
str := add(mload(0x40), 0x80)
// Update the free memory pointer to allocate.
mstore(0x40, add(str, 0x20))
// Zeroize the slot after the string.
mstore(str, 0)
// Cache the end of the memory to calculate the length later.
let end := str
let w := not(0) // Tsk.
// We write the string from rightmost digit to leftmost digit.
// The following is essentially a do-while loop that also handles the zero case.
for { let temp := value } 1 {} {
str := add(str, w) // `sub(str, 1)`.
// Write the character to the pointer.
// The ASCII index of the '0' character is 48.
mstore8(str, add(48, mod(temp, 10)))
// Keep dividing `temp` until zero.
temp := div(temp, 10)
if iszero(temp) { break }
}
let length := sub(end, str)
// Move the pointer 32 bytes leftwards to make room for the length.
str := sub(str, 0x20)
// Store the length.
mstore(str, length)
}
}
/// @dev Returns the base 10 decimal representation of `value`.
function toString(int256 value) internal pure returns (string memory str) {
if (value >= 0) {
return toString(uint256(value));
}
unchecked {
str = toString(uint256(-value));
}
/// @solidity memory-safe-assembly
assembly {
// We still have some spare memory space on the left,
// as we have allocated 3 words (96 bytes) for up to 78 digits.
let length := mload(str) // Load the string length.
mstore(str, 0x2d) // Store the '-' character.
str := sub(str, 1) // Move back the string pointer by a byte.
mstore(str, add(length, 1)) // Update the string length.
}
}
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* HEXADECIMAL OPERATIONS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev Returns the hexadecimal representation of `value`,
/// left-padded to an input length of `length` bytes.
/// The output is prefixed with "0x" encoded using 2 hexadecimal digits per byte,
/// giving a total length of `length * 2 + 2` bytes.
/// Reverts if `length` is too small for the output to contain all the digits.
function toHexString(uint256 value, uint256 length) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value, length);
/// @solidity memory-safe-assembly
assembly {
let strLength := add(mload(str), 2) // Compute the length.
mstore(str, 0x3078) // Write the "0x" prefix.
str := sub(str, 2) // Move the pointer.
mstore(str, strLength) // Write the length.
}
}
/// @dev Returns the hexadecimal representation of `value`,
/// left-padded to an input length of `length` bytes.
/// The output is prefixed with "0x" encoded using 2 hexadecimal digits per byte,
/// giving a total length of `length * 2` bytes.
/// Reverts if `length` is too small for the output to contain all the digits.
function toHexStringNoPrefix(uint256 value, uint256 length)
internal
pure
returns (string memory str)
{
/// @solidity memory-safe-assembly
assembly {
// We need 0x20 bytes for the trailing zeros padding, `length * 2` bytes
// for the digits, 0x02 bytes for the prefix, and 0x20 bytes for the length.
// We add 0x20 to the total and round down to a multiple of 0x20.
// (0x20 + 0x20 + 0x02 + 0x20) = 0x62.
str := add(mload(0x40), and(add(shl(1, length), 0x42), not(0x1f)))
// Allocate the memory.
mstore(0x40, add(str, 0x20))
// Zeroize the slot after the string.
mstore(str, 0)
// Cache the end to calculate the length later.
let end := str
// Store "0123456789abcdef" in scratch space.
mstore(0x0f, 0x30313233343536373839616263646566)
let start := sub(str, add(length, length))
let w := not(1) // Tsk.
let temp := value
// We write the string from rightmost digit to leftmost digit.
// The following is essentially a do-while loop that also handles the zero case.
for {} 1 {} {
str := add(str, w) // `sub(str, 2)`.
mstore8(add(str, 1), mload(and(temp, 15)))
mstore8(str, mload(and(shr(4, temp), 15)))
temp := shr(8, temp)
if iszero(xor(str, start)) { break }
}
if temp {
mstore(0x00, 0x2194895a) // `HexLengthInsufficient()`.
revert(0x1c, 0x04)
}
// Compute the string's length.
let strLength := sub(end, str)
// Move the pointer and write the length.
str := sub(str, 0x20)
mstore(str, strLength)
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is prefixed with "0x" and encoded using 2 hexadecimal digits per byte.
/// As address are 20 bytes long, the output will left-padded to have
/// a length of `20 * 2 + 2` bytes.
function toHexString(uint256 value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
/// @solidity memory-safe-assembly
assembly {
let strLength := add(mload(str), 2) // Compute the length.
mstore(str, 0x3078) // Write the "0x" prefix.
str := sub(str, 2) // Move the pointer.
mstore(str, strLength) // Write the length.
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is prefixed with "0x".
/// The output excludes leading "0" from the `toHexString` output.
/// `0x00: "0x0", 0x01: "0x1", 0x12: "0x12", 0x123: "0x123"`.
function toMinimalHexString(uint256 value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
/// @solidity memory-safe-assembly
assembly {
let o := eq(byte(0, mload(add(str, 0x20))), 0x30) // Whether leading zero is present.
let strLength := add(mload(str), 2) // Compute the length.
mstore(add(str, o), 0x3078) // Write the "0x" prefix, accounting for leading zero.
str := sub(add(str, o), 2) // Move the pointer, accounting for leading zero.
mstore(str, sub(strLength, o)) // Write the length, accounting for leading zero.
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output excludes leading "0" from the `toHexStringNoPrefix` output.
/// `0x00: "0", 0x01: "1", 0x12: "12", 0x123: "123"`.
function toMinimalHexStringNoPrefix(uint256 value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
/// @solidity memory-safe-assembly
assembly {
let o := eq(byte(0, mload(add(str, 0x20))), 0x30) // Whether leading zero is present.
let strLength := mload(str) // Get the length.
str := add(str, o) // Move the pointer, accounting for leading zero.
mstore(str, sub(strLength, o)) // Write the length, accounting for leading zero.
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is encoded using 2 hexadecimal digits per byte.
/// As address are 20 bytes long, the output will left-padded to have
/// a length of `20 * 2` bytes.
function toHexStringNoPrefix(uint256 value) internal pure returns (string memory str) {
/// @solidity memory-safe-assembly
assembly {
// We need 0x20 bytes for the trailing zeros padding, 0x20 bytes for the length,
// 0x02 bytes for the prefix, and 0x40 bytes for the digits.
// The next multiple of 0x20 above (0x20 + 0x20 + 0x02 + 0x40) is 0xa0.
str := add(mload(0x40), 0x80)
// Allocate the memory.
mstore(0x40, add(str, 0x20))
// Zeroize the slot after the string.
mstore(str, 0)
// Cache the end to calculate the length later.
let end := str
// Store "0123456789abcdef" in scratch space.
mstore(0x0f, 0x30313233343536373839616263646566)
let w := not(1) // Tsk.
// We write the string from rightmost digit to leftmost digit.
// The following is essentially a do-while loop that also handles the zero case.
for { let temp := value } 1 {} {
str := add(str, w) // `sub(str, 2)`.
mstore8(add(str, 1), mload(and(temp, 15)))
mstore8(str, mload(and(shr(4, temp), 15)))
temp := shr(8, temp)
if iszero(temp) { break }
}
// Compute the string's length.
let strLength := sub(end, str)
// Move the pointer and write the length.
str := sub(str, 0x20)
mstore(str, strLength)
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is prefixed with "0x", encoded using 2 hexadecimal digits per byte,
/// and the alphabets are capitalized conditionally according to
/// https://eips.ethereum.org/EIPS/eip-55
function toHexStringChecksummed(address value) internal pure returns (string memory str) {
str = toHexString(value);
/// @solidity memory-safe-assembly
assembly {
let mask := shl(6, div(not(0), 255)) // `0b010000000100000000 ...`
let o := add(str, 0x22)
let hashed := and(keccak256(o, 40), mul(34, mask)) // `0b10001000 ... `
let t := shl(240, 136) // `0b10001000 << 240`
for { let i := 0 } 1 {} {
mstore(add(i, i), mul(t, byte(i, hashed)))
i := add(i, 1)
if eq(i, 20) { break }
}
mstore(o, xor(mload(o), shr(1, and(mload(0x00), and(mload(o), mask)))))
o := add(o, 0x20)
mstore(o, xor(mload(o), shr(1, and(mload(0x20), and(mload(o), mask)))))
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is prefixed with "0x" and encoded using 2 hexadecimal digits per byte.
function toHexString(address value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
/// @solidity memory-safe-assembly
assembly {
let strLength := add(mload(str), 2) // Compute the length.
mstore(str, 0x3078) // Write the "0x" prefix.
str := sub(str, 2) // Move the pointer.
mstore(str, strLength) // Write the length.
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is encoded using 2 hexadecimal digits per byte.
function toHexStringNoPrefix(address value) internal pure returns (string memory str) {
/// @solidity memory-safe-assembly
assembly {
str := mload(0x40)
// Allocate the memory.
// We need 0x20 bytes for the trailing zeros padding, 0x20 bytes for the length,
// 0x02 bytes for the prefix, and 0x28 bytes for the digits.
// The next multiple of 0x20 above (0x20 + 0x20 + 0x02 + 0x28) is 0x80.
mstore(0x40, add(str, 0x80))
// Store "0123456789abcdef" in scratch space.
mstore(0x0f, 0x30313233343536373839616263646566)
str := add(str, 2)
mstore(str, 40)
let o := add(str, 0x20)
mstore(add(o, 40), 0)
value := shl(96, value)
// We write the string from rightmost digit to leftmost digit.
// The following is essentially a do-while loop that also handles the zero case.
for { let i := 0 } 1 {} {
let p := add(o, add(i, i))
let temp := byte(i, value)
mstore8(add(p, 1), mload(and(temp, 15)))
mstore8(p, mload(shr(4, temp)))
i := add(i, 1)
if eq(i, 20) { break }
}
}
}
/// @dev Returns the hex encoded string from the raw bytes.
/// The output is encoded using 2 hexadecimal digits per byte.
function toHexString(bytes memory raw) internal pure returns (string memory str) {
str = toHexStringNoPrefix(raw);
/// @solidity memory-safe-assembly
assembly {
let strLength := add(mload(str), 2) // Compute the length.
mstore(str, 0x3078) // Write the "0x" prefix.
str := sub(str, 2) // Move the pointer.
mstore(str, strLength) // Write the length.
}
}
/// @dev Returns the hex encoded string from the raw bytes.
/// The output is encoded using 2 hexadecimal digits per byte.
function toHexStringNoPrefix(bytes memory raw) internal pure returns (string memory str) {
/// @solidity memory-safe-assembly
assembly {
let length := mload(raw)
str := add(mload(0x40), 2) // Skip 2 bytes for the optional prefix.
mstore(str, add(length, length)) // Store the length of the output.
// Store "0123456789abcdef" in scratch space.
mstore(0x0f, 0x30313233343536373839616263646566)
let o := add(str, 0x20)
let end := add(raw, length)
for {} iszero(eq(raw, end)) {} {
raw := add(raw, 1)
mstore8(add(o, 1), mload(and(mload(raw), 15)))
mstore8(o, mload(and(shr(4, mload(raw)), 15)))
o := add(o, 2)
}
mstore(o, 0) // Zeroize the slot after the string.
mstore(0x40, add(o, 0x20)) // Allocate the memory.
}
}
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* RUNE STRING OPERATIONS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev Returns the number of UTF characters in the string.
function runeCount(string memory s) internal pure returns (uint256 result) {
/// @solidity memory-safe-assembly
assembly {
if mload(s) {
mstore(0x00, div(not(0), 255))
mstore(0x20, 0x0202020202020202020202020202020202020202020202020303030304040506)
let o := add(s, 0x20)
let end := add(o, mload(s))
for { result := 1 } 1 { result := add(result, 1) } {
o := add(o, byte(0, mload(shr(250, mload(o)))))
if iszero(lt(o, end)) { break }
}
}
}
}
/// @dev Returns if this string is a 7-bit ASCII string.
/// (i.e. all characters codes are in [0..127])
function is7BitASCII(string memory s) internal pure returns (bool result) {
/// @solidity memory-safe-assembly
assembly {
let mask := shl(7, div(not(0), 255))
result := 1
let n := mload(s)
if n {
let o := add(s, 0x20)
let end := add(o, n)
let last := mload(end)
mstore(end, 0)
for {} 1 {} {
if and(mask, mload(o)) {
result := 0
break
}
o := add(o, 0x20)
if iszero(lt(o, end)) { break }
}
mstore(end, last)
}
}
}
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* BYTE STRING OPERATIONS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
// For performance and bytecode compactness, byte string operations are restricted
// to 7-bit ASCII strings. All offsets are byte offsets, not UTF character offsets.
// Usage of byte string operations on charsets with runes spanning two or more bytes
// can lead to undefined behavior.
/// @dev Returns `subject` all occurrences of `search` replaced with `replacement`.
function replace(string memory subject, string memory search, string memory replacement)
internal
pure
returns (string memory result)
{
/// @solidity memory-safe-assembly
assembly {
let subjectLength := mload(subject)
let searchLength := mload(search)
let replacementLength := mload(replacement)
subject := add(subject, 0x20)
search := add(search, 0x20)
replacement := add(replacement, 0x20)
result := add(mload(0x40), 0x20)
let subjectEnd := add(subject, subjectLength)
if iszero(gt(searchLength, subjectLength)) {
let subjectSearchEnd := add(sub(subjectEnd, searchLength), 1)
let h := 0
if iszero(lt(searchLength, 0x20)) { h := keccak256(search, searchLength) }
let m := shl(3, sub(0x20, and(searchLength, 0x1f)))
let s := mload(search)
for {} 1 {} {
let t := mload(subject)
// Whether the first `searchLength % 32` bytes of
// `subject` and `search` matches.
if iszero(shr(m, xor(t, s))) {
if h {
if iszero(eq(keccak256(subject, searchLength), h)) {
mstore(result, t)
result := add(result, 1)
subject := add(subject, 1)
if iszero(lt(subject, subjectSearchEnd)) { break }
continue
}
}
// Copy the `replacement` one word at a time.
for { let o := 0 } 1 {} {
mstore(add(result, o), mload(add(replacement, o)))
o := add(o, 0x20)
if iszero(lt(o, replacementLength)) { break }
}
result := add(result, replacementLength)
subject := add(subject, searchLength)
if searchLength {
if iszero(lt(subject, subjectSearchEnd)) { break }
continue
}
}
mstore(result, t)
result := add(result, 1)
subject := add(subject, 1)
if iszero(lt(subject, subjectSearchEnd)) { break }
}
}
let resultRemainder := result
result := add(mload(0x40), 0x20)
let k := add(sub(resultRemainder, result), sub(subjectEnd, subject))
// Copy the rest of the string one word at a time.
for {} lt(subject, subjectEnd) {} {
mstore(resultRemainder, mload(subject))
resultRemainder := add(resultRemainder, 0x20)
subject := add(subject, 0x20)
}
result := sub(result, 0x20)
let last := add(add(result, 0x20), k) // Zeroize the slot after the string.
mstore(last, 0)
mstore(0x40, add(last, 0x20)) // Allocate the memory.
mstore(result, k) // Store the length.
}
}
/// @dev Returns the byte index of the first location of `search` in `subject`,
/// searching from left to right, starting from `from`.
/// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `search` is not found.
function indexOf(string memory subject, string memory search, uint256 from)
internal
pure
returns (uint256 result)
{
/// @solidity memory-safe-assembly
assembly {
for { let subjectLength := mload(subject) } 1 {} {
if iszero(mload(search)) {
if iszero(gt(from, subjectLength)) {
result := from
break
}
result := subjectLength
break
}
let searchLength := mload(search)
let subjectStart := add(subject, 0x20)
result := not(0) // Initialize to `NOT_FOUND`.
subject := add(subjectStart, from)
let end := add(sub(add(subjectStart, subjectLength), searchLength), 1)
let m := shl(3, sub(0x20, and(searchLength, 0x1f)))
let s := mload(add(search, 0x20))
if iszero(and(lt(subject, end), lt(from, subjectLength))) { break }
if iszero(lt(searchLength, 0x20)) {
for { let h := keccak256(add(search, 0x20), searchLength) } 1 {} {
if iszero(shr(m, xor(mload(subject), s))) {
if eq(keccak256(subject, searchLength), h) {
result := sub(subject, subjectStart)
break
}
}
subject := add(subject, 1)
if iszero(lt(subject, end)) { break }
}
break
}
for {} 1 {} {
if iszero(shr(m, xor(mload(subject), s))) {
result := sub(subject, subjectStart)
break
}
subject := add(subject, 1)
if iszero(lt(subject, end)) { break }
}
break
}
}
}
/// @dev Returns the byte index of the first location of `search` in `subject`,
/// searching from left to right.
/// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `search` is not found.
function indexOf(string memory subject, string memory search)
internal
pure
returns (uint256 result)
{
result = indexOf(subject, search, 0);
}
/// @dev Returns the byte index of the first location of `search` in `subject`,
/// searching from right to left, starting from `from`.
/// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `search` is not found.
function lastIndexOf(string memory subject, string memory search, uint256 from)
internal
pure
returns (uint256 result)
{
/// @solidity memory-safe-assembly
assembly {
for {} 1 {} {
result := not(0) // Initialize to `NOT_FOUND`.
let searchLength := mload(search)
if gt(searchLength, mload(subject)) { break }
let w := result
let fromMax := sub(mload(subject), searchLength)
if iszero(gt(fromMax, from)) { from := fromMax }
let end := add(add(subject, 0x20), w)
subject := add(add(subject, 0x20), from)
if iszero(gt(subject, end)) { break }
// As this function is not too often used,
// we shall simply use keccak256 for smaller bytecode size.
for { let h := keccak256(add(search, 0x20), searchLength) } 1 {} {
if eq(keccak256(subject, searchLength), h) {
result := sub(subject, add(end, 1))
break
}
subject := add(subject, w) // `sub(subject, 1)`.
if iszero(gt(subject, end)) { break }
}
break
}
}
}
/// @dev Returns the byte index of the first location of `search` in `subject`,
/// searching from right to left.
/// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `search` is not found.
function lastIndexOf(string memory subject, string memory search)
internal
pure
returns (uint256 result)
{
result = lastIndexOf(subject, search, uint256(int256(-1)));
}
/// @dev Returns true if `search` is found in `subject`, false otherwise.
function contains(string memory subject, string memory search) internal pure returns (bool) {
return indexOf(subject, search) != NOT_FOUND;
}
/// @dev Returns whether `subject` starts with `search`.
function startsWith(string memory subject, string memory search)
internal
pure
returns (bool result)
{
/// @solidity memory-safe-assembly
assembly {
let searchLength := mload(search)
// Just using keccak256 directly is actually cheaper.
// forgefmt: disable-next-item
result := and(
iszero(gt(searchLength, mload(subject))),
eq(
keccak256(add(subject, 0x20), searchLength),
keccak256(add(search, 0x20), searchLength)
)
)
}
}
/// @dev Returns whether `subject` ends with `search`.
function endsWith(string memory subject, string memory search)
internal
pure
returns (bool result)
{
/// @solidity memory-safe-assembly
assembly {
let searchLength := mload(search)
let subjectLength := mload(subject)
// Whether `search` is not longer than `subject`.
let withinRange := iszero(gt(searchLength, subjectLength))
// Just using keccak256 directly is actually cheaper.
// forgefmt: disable-next-item
result := and(
withinRange,
eq(
keccak256(
// `subject + 0x20 + max(subjectLength - searchLength, 0)`.
add(add(subject, 0x20), mul(withinRange, sub(subjectLength, searchLength))),
searchLength
),
keccak256(add(search, 0x20), searchLength)
)
)
}
}
/// @dev Returns `subject` repeated `times`.
function repeat(string memory subject, uint256 times)
internal
pure
returns (string memory result)
{
/// @solidity memory-safe-assembly
assembly {
let subjectLength := mload(subject)
if iszero(or(iszero(times), iszero(subjectLength))) {
subject := add(subject, 0x20)
result := mload(0x40)
let output := add(result, 0x20)
for {} 1 {} {
// Copy the `subject` one word at a time.
for { let o := 0 } 1 {} {
mstore(add(output, o), mload(add(subject, o)))
o := add(o, 0x20)
if iszero(lt(o, subjectLength)) { break }
}
output := add(output, subjectLength)
times := sub(times, 1)
if iszero(times) { break }
}
mstore(output, 0) // Zeroize the slot after the string.
let resultLength := sub(output, add(result, 0x20))
mstore(result, resultLength) // Store the length.
// Allocate the memory.
mstore(0x40, add(result, add(resultLength, 0x20)))
}
}
}
/// @dev Returns a copy of `subject` sliced from `start` to `end` (exclusive).
/// `start` and `end` are byte offsets.
function slice(string memory subject, uint256 start, uint256 end)
internal
pure
returns (string memory result)
{
/// @solidity memory-safe-assembly
assembly {
let subjectLength := mload(subject)
if iszero(gt(subjectLength, end)) { end := subjectLength }
if iszero(gt(subjectLength, start)) { start := subjectLength }
if lt(start, end) {
result := mload(0x40)
let resultLength := sub(end, start)
mstore(result, resultLength)
subject := add(subject, start)
let w := not(0x1f)
// Copy the `subject` one word at a time, backwards.
for { let o := and(add(resultLength, 0x1f), w) } 1 {} {
mstore(add(result, o), mload(add(subject, o)))
o := add(o, w) // `sub(o, 0x20)`.
if iszero(o) { break }
}
// Zeroize the slot after the string.
mstore(add(add(result, 0x20), resultLength), 0)
// Allocate memory for the length and the bytes,
// rounded up to a multiple of 32.
mstore(0x40, add(result, and(add(resultLength, 0x3f), w)))
}
}
}
/// @dev Returns a copy of `subject` sliced from `start` to the end of the string.
/// `start` is a byte offset.
function slice(string memory subject, uint256 start)
internal
pure
returns (string memory result)
{
result = slice(subject, start, uint256(int256(-1)));
}
/// @dev Returns all the indices of `search` in `subject`.
/// The indices are byte offsets.
function indicesOf(string memory subject, string memory search)
internal
pure
returns (uint256[] memory result)
{
/// @solidity memory-safe-assembly
assembly {
let subjectLength := mload(subject)
let searchLength := mload(search)
if iszero(gt(searchLength, subjectLength)) {
subject := add(subject, 0x20)
search := add(search, 0x20)
result := add(mload(0x40), 0x20)
let subjectStart := subject
let subjectSearchEnd := add(sub(add(subject, subjectLength), searchLength), 1)
let h := 0
if iszero(lt(searchLength, 0x20)) { h := keccak256(search, searchLength) }
let m := shl(3, sub(0x20, and(searchLength, 0x1f)))
let s := mload(search)
for {} 1 {} {
let t := mload(subject)
// Whether the first `searchLength % 32` bytes of
// `subject` and `search` matches.
if iszero(shr(m, xor(t, s))) {
if h {
if iszero(eq(keccak256(subject, searchLength), h)) {
subject := add(subject, 1)
if iszero(lt(subject, subjectSearchEnd)) { break }
continue
}
}
// Append to `result`.
mstore(result, sub(subject, subjectStart))
result := add(result, 0x20)
// Advance `subject` by `searchLength`.
subject := add(subject, searchLength)
if searchLength {
if iszero(lt(subject, subjectSearchEnd)) { break }
continue
}
}
subject := add(subject, 1)
if iszero(lt(subject, subjectSearchEnd)) { break }
}
let resultEnd := result
// Assign `result` to the free memory pointer.
result := mload(0x40)
// Store the length of `result`.
mstore(result, shr(5, sub(resultEnd, add(result, 0x20))))
// Allocate memory for result.
// We allocate one more word, so this array can be recycled for {split}.
mstore(0x40, add(resultEnd, 0x20))
}
}
}
/// @dev Returns a arrays of strings based on the `delimiter` inside of the `subject` string.
function split(string memory subject, string memory delimiter)
internal
pure
returns (string[] memory result)
{
uint256[] memory indices = indicesOf(subject, delimiter);
/// @solidity memory-safe-assembly
assembly {
let w := not(0x1f)
let indexPtr := add(indices, 0x20)
let indicesEnd := add(indexPtr, shl(5, add(mload(indices), 1)))
mstore(add(indicesEnd, w), mload(subject))
mstore(indices, add(mload(indices), 1))
let prevIndex := 0
for {} 1 {} {
let index := mload(indexPtr)
mstore(indexPtr, 0x60)
if iszero(eq(index, prevIndex)) {
let element := mload(0x40)
let elementLength := sub(index, prevIndex)
mstore(element, elementLength)
// Copy the `subject` one word at a time, backwards.
for { let o := and(add(elementLength, 0x1f), w) } 1 {} {
mstore(add(element, o), mload(add(add(subject, prevIndex), o)))
o := add(o, w) // `sub(o, 0x20)`.
if iszero(o) { break }
}
// Zeroize the slot after the string.
mstore(add(add(element, 0x20), elementLength), 0)
// Allocate memory for the length and the bytes,
// rounded up to a multiple of 32.
mstore(0x40, add(element, and(add(elementLength, 0x3f), w)))
// Store the `element` into the array.
mstore(indexPtr, element)
}
prevIndex := add(index, mload(delimiter))
indexPtr := add(indexPtr, 0x20)
if iszero(lt(indexPtr, indicesEnd)) { break }
}
result := indices
if iszero(mload(delimiter)) {
result := add(indices, 0x20)
mstore(result, sub(mload(indices), 2))
}
}
}
/// @dev Returns a concatenated string of `a` and `b`.
/// Cheaper than `string.concat()` and does not de-align the free memory pointer.
function concat(string memory a, string memory b)
internal
pure
returns (string memory result)
{
/// @solidity memory-safe-assembly
assembly {
let w := not(0x1f)
result := mload(0x40)
let aLength := mload(a)
// Copy `a` one word at a time, backwards.
for { let o := and(add(aLength, 0x20), w) } 1 {} {
mstore(add(result, o), mload(add(a, o)))
o := add(o, w) // `sub(o, 0x20)`.
if iszero(o) { break }
}
let bLength := mload(b)
let output := add(result, aLength)
// Copy `b` one word at a time, backwards.
for { let o := and(add(bLength, 0x20), w) } 1 {} {
mstore(add(output, o), mload(add(b, o)))
o := add(o, w) // `sub(o, 0x20)`.
if iszero(o) { break }
}
let totalLength := add(aLength, bLength)
let last := add(add(result, 0x20), totalLength)
// Zeroize the slot after the string.
mstore(last, 0)
// Stores the length.
mstore(result, totalLength)
// Allocate memory for the length and the bytes,
// rounded up to a multiple of 32.
mstore(0x40, and(add(last, 0x1f), w))
}
}
/// @dev Returns a copy of the string in either lowercase or UPPERCASE.
/// WARNING! This function is only compatible with 7-bit ASCII strings.
function toCase(string memory subject, bool toUpper)
internal
pure
returns (string memory result)
{
/// @solidity memory-safe-assembly
assembly {
let length := mload(subject)
if length {
result := add(mload(0x40), 0x20)
subject := add(subject, 1)
let flags := shl(add(70, shl(5, toUpper)), 0x3ffffff)
let w := not(0)
for { let o := length } 1 {} {
o := add(o, w)
let b := and(0xff, mload(add(subject, o)))
mstore8(add(result, o), xor(b, and(shr(b, flags), 0x20)))
if iszero(o) { break }
}
result := mload(0x40)
mstore(result, length) // Store the length.
let last := add(add(result, 0x20), length)
mstore(last, 0) // Zeroize the slot after the string.
mstore(0x40, add(last, 0x20)) // Allocate the memory.
}
}
}
/// @dev Returns a string from a small bytes32 string.
/// `s` must be null-terminated, or behavior will be undefined.
function fromSmallString(bytes32 s) internal pure returns (string memory result) {
/// @solidity memory-safe-assembly
assembly {
result := mload(0x40)
let n := 0
for {} byte(n, s) { n := add(n, 1) } {} // Scan for '\0'.
mstore(result, n)
let o := add(result, 0x20)
mstore(o, s)
mstore(add(o, n), 0)
mstore(0x40, add(result, 0x40))
}
}
/// @dev Returns the small string, with all bytes after the first null byte zeroized.
function normalizeSmallString(bytes32 s) internal pure returns (bytes32 result) {
/// @solidity memory-safe-assembly
assembly {
for {} byte(result, s) { result := add(result, 1) } {} // Scan for '\0'.
mstore(0x00, s)
mstore(result, 0x00)
result := mload(0x00)
}
}
/// @dev Returns the string as a normalized null-terminated small string.
function toSmallString(string memory s) internal pure returns (bytes32 result) {
/// @solidity memory-safe-assembly
assembly {
result := mload(s)
if iszero(lt(result, 33)) {
mstore(0x00, 0xec92f9a3) // `TooBigForSmallString()`.
revert(0x1c, 0x04)
}
result := shl(shl(3, sub(32, result)), mload(add(s, result)))
}
}
/// @dev Returns a lowercased copy of the string.
/// WARNING! This function is only compatible with 7-bit ASCII strings.
function lower(string memory subject) internal pure returns (string memory result) {
result = toCase(subject, false);
}
/// @dev Returns an UPPERCASED copy of the string.
/// WARNING! This function is only compatible with 7-bit ASCII strings.
function upper(string memory subject) internal pure returns (string memory result) {
result = toCase(subject, true);
}
/// @dev Escapes the string to be used within HTML tags.
function escapeHTML(string memory s) internal pure returns (string memory result) {
/// @solidity memory-safe-assembly
assembly {
let end := add(s, mload(s))
result := add(mload(0x40), 0x20)
// Store the bytes of the packed offsets and strides into the scratch space.
// `packed = (stride << 5) | offset`. Max offset is 20. Max stride is 6.
mstore(0x1f, 0x900094)
mstore(0x08, 0xc0000000a6ab)
// Store ""&'<>" into the scratch space.
mstore(0x00, shl(64, 0x2671756f743b26616d703b262333393b266c743b2667743b))
for {} iszero(eq(s, end)) {} {
s := add(s, 1)
let c := and(mload(s), 0xff)
// Not in `["\"","'","&","<",">"]`.
if iszero(and(shl(c, 1), 0x500000c400000000)) {
mstore8(result, c)
result := add(result, 1)
continue
}
let t := shr(248, mload(c))
mstore(result, mload(and(t, 0x1f)))
result := add(result, shr(5, t))
}
let last := result
mstore(last, 0) // Zeroize the slot after the string.
result := mload(0x40)
mstore(result, sub(last, add(result, 0x20))) // Store the length.
mstore(0x40, add(last, 0x20)) // Allocate the memory.
}
}
/// @dev Escapes the string to be used within double-quotes in a JSON.
/// If `addDoubleQuotes` is true, the result will be enclosed in double-quotes.
function escapeJSON(string memory s, bool addDoubleQuotes)
internal
pure
returns (string memory result)
{
/// @solidity memory-safe-assembly
assembly {
let end := add(s, mload(s))
result := add(mload(0x40), 0x20)
if addDoubleQuotes {
mstore8(result, 34)
result := add(1, result)
}
// Store "\\u0000" in scratch space.
// Store "0123456789abcdef" in scratch space.
// Also, store `{0x08:"b", 0x09:"t", 0x0a:"n", 0x0c:"f", 0x0d:"r"}`.
// into the scratch space.
mstore(0x15, 0x5c75303030303031323334353637383961626364656662746e006672)
// Bitmask for detecting `["\"","\\"]`.
let e := or(shl(0x22, 1), shl(0x5c, 1))
for {} iszero(eq(s, end)) {} {
s := add(s, 1)
let c := and(mload(s), 0xff)
if iszero(lt(c, 0x20)) {
if iszero(and(shl(c, 1), e)) {
// Not in `["\"","\\"]`.
mstore8(result, c)
result := add(result, 1)
continue
}
mstore8(result, 0x5c) // "\\".
mstore8(add(result, 1), c)
result := add(result, 2)
continue
}
if iszero(and(shl(c, 1), 0x3700)) {
// Not in `["\b","\t","\n","\f","\d"]`.
mstore8(0x1d, mload(shr(4, c))) // Hex value.
mstore8(0x1e, mload(and(c, 15))) // Hex value.
mstore(result, mload(0x19)) // "\\u00XX".
result := add(result, 6)
continue
}
mstore8(result, 0x5c) // "\\".
mstore8(add(result, 1), mload(add(c, 8)))
result := add(result, 2)
}
if addDoubleQuotes {
mstore8(result, 34)
result := add(1, result)
}
let last := result
mstore(last, 0) // Zeroize the slot after the string.
result := mload(0x40)
mstore(result, sub(last, add(result, 0x20))) // Store the length.
mstore(0x40, add(last, 0x20)) // Allocate the memory.
}
}
/// @dev Escapes the string to be used within double-quotes in a JSON.
function escapeJSON(string memory s) internal pure returns (string memory result) {
result = escapeJSON(s, false);
}
/// @dev Returns whether `a` equals `b`.
function eq(string memory a, string memory b) internal pure returns (bool result) {
/// @solidity memory-safe-assembly
assembly {
result := eq(keccak256(add(a, 0x20), mload(a)), keccak256(add(b, 0x20), mload(b)))
}
}
/// @dev Returns whether `a` equals `b`, where `b` is a null-terminated small string.
function eqs(string memory a, bytes32 b) internal pure returns (bool result) {
/// @solidity memory-safe-assembly
assembly {
// These should be evaluated on compile time, as far as possible.
let m := not(shl(7, div(not(iszero(b)), 255))) // `0x7f7f ...`.
let x := not(or(m, or(b, add(m, and(b, m)))))
let r := shl(7, iszero(iszero(shr(128, x))))
r := or(r, shl(6, iszero(iszero(shr(64, shr(r, x))))))
r := or(r, shl(5, lt(0xffffffff, shr(r, x))))
r := or(r, shl(4, lt(0xffff, shr(r, x))))
r := or(r, shl(3, lt(0xff, shr(r, x))))
// forgefmt: disable-next-item
result := gt(eq(mload(a), add(iszero(x), xor(31, shr(3, r)))),
xor(shr(add(8, r), b), shr(add(8, r), mload(add(a, 0x20)))))
}
}
/// @dev Packs a single string with its length into a single word.
/// Returns `bytes32(0)` if the length is zero or greater than 31.
function packOne(string memory a) internal pure returns (bytes32 result) {
/// @solidity memory-safe-assembly
assembly {
// We don't need to zero right pad the string,
// since this is our own custom non-standard packing scheme.
result :=
mul(
// Load the length and the bytes.
mload(add(a, 0x1f)),
// `length != 0 && length < 32`. Abuses underflow.
// Assumes that the length is valid and within the block gas limit.
lt(sub(mload(a), 1), 0x1f)
)
}
}
/// @dev Unpacks a string packed using {packOne}.
/// Returns the empty string if `packed` is `bytes32(0)`.
/// If `packed` is not an output of {packOne}, the output behavior is undefined.
function unpackOne(bytes32 packed) internal pure returns (string memory result) {
/// @solidity memory-safe-assembly
assembly {
// Grab the free memory pointer.
result := mload(0x40)
// Allocate 2 words (1 for the length, 1 for the bytes).
mstore(0x40, add(result, 0x40))
// Zeroize the length slot.
mstore(result, 0)
// Store the length and bytes.
mstore(add(result, 0x1f), packed)
// Right pad with zeroes.
mstore(add(add(result, 0x20), mload(result)), 0)
}
}
/// @dev Packs two strings with their lengths into a single word.
/// Returns `bytes32(0)` if combined length is zero or greater than 30.
function packTwo(string memory a, string memory b) internal pure returns (bytes32 result) {
/// @solidity memory-safe-assembly
assembly {
let aLength := mload(a)
// We don't need to zero right pad the strings,
// since this is our own custom non-standard packing scheme.
result :=
mul(
// Load the length and the bytes of `a` and `b`.
or(
shl(shl(3, sub(0x1f, aLength)), mload(add(a, aLength))),
mload(sub(add(b, 0x1e), aLength))
),
// `totalLength != 0 && totalLength < 31`. Abuses underflow.
// Assumes that the lengths are valid and within the block gas limit.
lt(sub(add(aLength, mload(b)), 1), 0x1e)
)
}
}
/// @dev Unpacks strings packed using {packTwo}.
/// Returns the empty strings if `packed` is `bytes32(0)`.
/// If `packed` is not an output of {packTwo}, the output behavior is undefined.
function unpackTwo(bytes32 packed)
internal
pure
returns (string memory resultA, string memory resultB)
{
/// @solidity memory-safe-assembly
assembly {
// Grab the free memory pointer.
resultA := mload(0x40)
resultB := add(resultA, 0x40)
// Allocate 2 words for each string (1 for the length, 1 for the byte). Total 4 words.
mstore(0x40, add(resultB, 0x40))
// Zeroize the length slots.
mstore(resultA, 0)
mstore(resultB, 0)
// Store the lengths and bytes.
mstore(add(resultA, 0x1f), packed)
mstore(add(resultB, 0x1f), mload(add(add(resultA, 0x20), mload(resultA))))
// Right pad with zeroes.
mstore(add(add(resultA, 0x20), mload(resultA)), 0)
mstore(add(add(resultB, 0x20), mload(resultB)), 0)
}
}
/// @dev Directly returns `a` without copying.
function directReturn(string memory a) internal pure {
assembly {
// Assumes that the string does not start from the scratch space.
let retStart := sub(a, 0x20)
let retSize := add(mload(a), 0x40)
// Right pad with zeroes. Just in case the string is produced
// by a method that doesn't zero right pad.
mstore(add(retStart, retSize), 0)
// Store the return offset.
mstore(retStart, 0x20)
// End the transaction, returning the string.
return(retStart, retSize)
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IResourceMetering {
struct ResourceParams {
uint128 prevBaseFee;
uint64 prevBoughtGas;
uint64 prevBlockNum;
}
struct ResourceConfig {
uint32 maxResourceLimit;
uint8 elasticityMultiplier;
uint8 baseFeeMaxChangeDenominator;
uint32 minimumBaseFee;
uint32 systemTxMaxGas;
uint128 maximumBaseFee;
}
error OutOfGas();
event Initialized(uint8 version);
function params() external view returns (uint128 prevBaseFee, uint64 prevBoughtGas, uint64 prevBlockNum);
}// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;
import { ISemver } from "src/universal/interfaces/ISemver.sol";
import { Constants } from "src/libraries/Constants.sol";
import { GasPayingToken, IGasToken } from "src/libraries/GasPayingToken.sol";
import "src/libraries/L1BlockErrors.sol";
/// @custom:proxied true
/// @custom:predeploy 0x4200000000000000000000000000000000000015
/// @title L1Block
/// @notice The L1Block predeploy gives users access to information about the last known L1 block.
/// Values within this contract are updated once per epoch (every L1 block) and can only be
/// set by the "depositor" account, a special system address. Depositor account transactions
/// are created by the protocol whenever we move to a new epoch.
contract L1Block is ISemver, IGasToken {
/// @notice Event emitted when the gas paying token is set.
event GasPayingTokenSet(address indexed token, uint8 indexed decimals, bytes32 name, bytes32 symbol);
/// @notice Address of the special depositor account.
function DEPOSITOR_ACCOUNT() public pure returns (address addr_) {
addr_ = Constants.DEPOSITOR_ACCOUNT;
}
/// @notice The latest L1 block number known by the L2 system.
uint64 public number;
/// @notice The latest L1 timestamp known by the L2 system.
uint64 public timestamp;
/// @notice The latest L1 base fee.
uint256 public basefee;
/// @notice The latest L1 blockhash.
bytes32 public hash;
/// @notice The number of L2 blocks in the same epoch.
uint64 public sequenceNumber;
/// @notice The scalar value applied to the L1 blob base fee portion of the blob-capable L1 cost func.
uint32 public blobBaseFeeScalar;
/// @notice The scalar value applied to the L1 base fee portion of the blob-capable L1 cost func.
uint32 public baseFeeScalar;
/// @notice The versioned hash to authenticate the batcher by.
bytes32 public batcherHash;
/// @notice The overhead value applied to the L1 portion of the transaction fee.
/// @custom:legacy
uint256 public l1FeeOverhead;
/// @notice The scalar value applied to the L1 portion of the transaction fee.
/// @custom:legacy
uint256 public l1FeeScalar;
/// @notice The latest L1 blob base fee.
uint256 public blobBaseFee;
/// @custom:semver 1.5.1-beta.1
function version() public pure virtual returns (string memory) {
return "1.5.1-beta.1";
}
/// @notice Returns the gas paying token, its decimals, name and symbol.
/// If nothing is set in state, then it means ether is used.
function gasPayingToken() public view returns (address addr_, uint8 decimals_) {
(addr_, decimals_) = GasPayingToken.getToken();
}
/// @notice Returns the gas paying token name.
/// If nothing is set in state, then it means ether is used.
function gasPayingTokenName() public view returns (string memory name_) {
name_ = GasPayingToken.getName();
}
/// @notice Returns the gas paying token symbol.
/// If nothing is set in state, then it means ether is used.
function gasPayingTokenSymbol() public view returns (string memory symbol_) {
symbol_ = GasPayingToken.getSymbol();
}
/// @notice Getter for custom gas token paying networks. Returns true if the
/// network uses a custom gas token.
function isCustomGasToken() public view returns (bool) {
(address token,) = gasPayingToken();
return token != Constants.ETHER;
}
/// @custom:legacy
/// @notice Updates the L1 block values.
/// @param _number L1 blocknumber.
/// @param _timestamp L1 timestamp.
/// @param _basefee L1 basefee.
/// @param _hash L1 blockhash.
/// @param _sequenceNumber Number of L2 blocks since epoch start.
/// @param _batcherHash Versioned hash to authenticate batcher by.
/// @param _l1FeeOverhead L1 fee overhead.
/// @param _l1FeeScalar L1 fee scalar.
function setL1BlockValues(
uint64 _number,
uint64 _timestamp,
uint256 _basefee,
bytes32 _hash,
uint64 _sequenceNumber,
bytes32 _batcherHash,
uint256 _l1FeeOverhead,
uint256 _l1FeeScalar
)
external
{
require(msg.sender == DEPOSITOR_ACCOUNT(), "L1Block: only the depositor account can set L1 block values");
number = _number;
timestamp = _timestamp;
basefee = _basefee;
hash = _hash;
sequenceNumber = _sequenceNumber;
batcherHash = _batcherHash;
l1FeeOverhead = _l1FeeOverhead;
l1FeeScalar = _l1FeeScalar;
}
/// @notice Updates the L1 block values for an Ecotone upgraded chain.
/// Params are packed and passed in as raw msg.data instead of ABI to reduce calldata size.
/// Params are expected to be in the following order:
/// 1. _baseFeeScalar L1 base fee scalar
/// 2. _blobBaseFeeScalar L1 blob base fee scalar
/// 3. _sequenceNumber Number of L2 blocks since epoch start.
/// 4. _timestamp L1 timestamp.
/// 5. _number L1 blocknumber.
/// 6. _basefee L1 base fee.
/// 7. _blobBaseFee L1 blob base fee.
/// 8. _hash L1 blockhash.
/// 9. _batcherHash Versioned hash to authenticate batcher by.
function setL1BlockValuesEcotone() public {
_setL1BlockValuesEcotone();
}
/// @notice Updates the L1 block values for an Ecotone upgraded chain.
/// Params are packed and passed in as raw msg.data instead of ABI to reduce calldata size.
/// Params are expected to be in the following order:
/// 1. _baseFeeScalar L1 base fee scalar
/// 2. _blobBaseFeeScalar L1 blob base fee scalar
/// 3. _sequenceNumber Number of L2 blocks since epoch start.
/// 4. _timestamp L1 timestamp.
/// 5. _number L1 blocknumber.
/// 6. _basefee L1 base fee.
/// 7. _blobBaseFee L1 blob base fee.
/// 8. _hash L1 blockhash.
/// 9. _batcherHash Versioned hash to authenticate batcher by.
function _setL1BlockValuesEcotone() internal {
address depositor = DEPOSITOR_ACCOUNT();
assembly {
// Revert if the caller is not the depositor account.
if xor(caller(), depositor) {
mstore(0x00, 0x3cc50b45) // 0x3cc50b45 is the 4-byte selector of "NotDepositor()"
revert(0x1C, 0x04) // returns the stored 4-byte selector from above
}
// sequencenum (uint64), blobBaseFeeScalar (uint32), baseFeeScalar (uint32)
sstore(sequenceNumber.slot, shr(128, calldataload(4)))
// number (uint64) and timestamp (uint64)
sstore(number.slot, shr(128, calldataload(20)))
sstore(basefee.slot, calldataload(36)) // uint256
sstore(blobBaseFee.slot, calldataload(68)) // uint256
sstore(hash.slot, calldataload(100)) // bytes32
sstore(batcherHash.slot, calldataload(132)) // bytes32
}
}
/// @notice Sets the gas paying token for the L2 system. Can only be called by the special
/// depositor account. This function is not called on every L2 block but instead
/// only called by specially crafted L1 deposit transactions.
function setGasPayingToken(address _token, uint8 _decimals, bytes32 _name, bytes32 _symbol) external {
if (msg.sender != DEPOSITOR_ACCOUNT()) revert NotDepositor();
GasPayingToken.set({ _token: _token, _decimals: _decimals, _name: _name, _symbol: _symbol });
emit GasPayingTokenSet({ token: _token, decimals: _decimals, name: _name, symbol: _symbol });
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { IResourceMetering } from "src/L1/interfaces/IResourceMetering.sol";
/// @title Constants
/// @notice Constants is a library for storing constants. Simple! Don't put everything in here, just
/// the stuff used in multiple contracts. Constants that only apply to a single contract
/// should be defined in that contract instead.
library Constants {
/// @notice Special address to be used as the tx origin for gas estimation calls in the
/// OptimismPortal and CrossDomainMessenger calls. You only need to use this address if
/// the minimum gas limit specified by the user is not actually enough to execute the
/// given message and you're attempting to estimate the actual necessary gas limit. We
/// use address(1) because it's the ecrecover precompile and therefore guaranteed to
/// never have any code on any EVM chain.
address internal constant ESTIMATION_ADDRESS = address(1);
/// @notice Value used for the L2 sender storage slot in both the OptimismPortal and the
/// CrossDomainMessenger contracts before an actual sender is set. This value is
/// non-zero to reduce the gas cost of message passing transactions.
address internal constant DEFAULT_L2_SENDER = 0x000000000000000000000000000000000000dEaD;
/// @notice The storage slot that holds the address of a proxy implementation.
/// @dev `bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)`
bytes32 internal constant PROXY_IMPLEMENTATION_ADDRESS =
0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/// @notice The storage slot that holds the address of the owner.
/// @dev `bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1)`
bytes32 internal constant PROXY_OWNER_ADDRESS = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
/// @notice The address that represents ether when dealing with ERC20 token addresses.
address internal constant ETHER = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
/// @notice The address that represents the system caller responsible for L1 attributes
/// transactions.
address internal constant DEPOSITOR_ACCOUNT = 0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001;
/// @notice Returns the default values for the ResourceConfig. These are the recommended values
/// for a production network.
function DEFAULT_RESOURCE_CONFIG() internal pure returns (IResourceMetering.ResourceConfig memory) {
IResourceMetering.ResourceConfig memory config = IResourceMetering.ResourceConfig({
maxResourceLimit: 20_000_000,
elasticityMultiplier: 10,
baseFeeMaxChangeDenominator: 8,
minimumBaseFee: 1 gwei,
systemTxMaxGas: 1_000_000,
maximumBaseFee: type(uint128).max
});
return config;
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { Storage } from "src/libraries/Storage.sol";
import { Constants } from "src/libraries/Constants.sol";
import { LibString } from "@solady/utils/LibString.sol";
/// @title IGasToken
/// @notice Implemented by contracts that are aware of the custom gas token used
/// by the L2 network.
interface IGasToken {
/// @notice Getter for the ERC20 token address that is used to pay for gas and its decimals.
function gasPayingToken() external view returns (address, uint8);
/// @notice Returns the gas token name.
function gasPayingTokenName() external view returns (string memory);
/// @notice Returns the gas token symbol.
function gasPayingTokenSymbol() external view returns (string memory);
/// @notice Returns true if the network uses a custom gas token.
function isCustomGasToken() external view returns (bool);
}
/// @title GasPayingToken
/// @notice Handles reading and writing the custom gas token to storage.
/// To be used in any place where gas token information is read or
/// written to state. If multiple contracts use this library, the
/// values in storage should be kept in sync between them.
library GasPayingToken {
/// @notice The storage slot that contains the address and decimals of the gas paying token
bytes32 internal constant GAS_PAYING_TOKEN_SLOT = bytes32(uint256(keccak256("opstack.gaspayingtoken")) - 1);
/// @notice The storage slot that contains the ERC20 `name()` of the gas paying token
bytes32 internal constant GAS_PAYING_TOKEN_NAME_SLOT = bytes32(uint256(keccak256("opstack.gaspayingtokenname")) - 1);
/// @notice the storage slot that contains the ERC20 `symbol()` of the gas paying token
bytes32 internal constant GAS_PAYING_TOKEN_SYMBOL_SLOT =
bytes32(uint256(keccak256("opstack.gaspayingtokensymbol")) - 1);
/// @notice Reads the gas paying token and its decimals from the magic
/// storage slot. If nothing is set in storage, then the ether
/// address is returned instead.
function getToken() internal view returns (address addr_, uint8 decimals_) {
bytes32 slot = Storage.getBytes32(GAS_PAYING_TOKEN_SLOT);
addr_ = address(uint160(uint256(slot) & uint256(type(uint160).max)));
if (addr_ == address(0)) {
addr_ = Constants.ETHER;
decimals_ = 18;
} else {
decimals_ = uint8(uint256(slot) >> 160);
}
}
/// @notice Reads the gas paying token's name from the magic storage slot.
/// If nothing is set in storage, then the ether name, 'Ether', is returned instead.
function getName() internal view returns (string memory name_) {
(address addr,) = getToken();
if (addr == Constants.ETHER) {
name_ = "Ether";
} else {
name_ = LibString.fromSmallString(Storage.getBytes32(GAS_PAYING_TOKEN_NAME_SLOT));
}
}
/// @notice Reads the gas paying token's symbol from the magic storage slot.
/// If nothing is set in storage, then the ether symbol, 'ETH', is returned instead.
function getSymbol() internal view returns (string memory symbol_) {
(address addr,) = getToken();
if (addr == Constants.ETHER) {
symbol_ = "ETH";
} else {
symbol_ = LibString.fromSmallString(Storage.getBytes32(GAS_PAYING_TOKEN_SYMBOL_SLOT));
}
}
/// @notice Writes the gas paying token, its decimals, name and symbol to the magic storage slot.
function set(address _token, uint8 _decimals, bytes32 _name, bytes32 _symbol) internal {
Storage.setBytes32(GAS_PAYING_TOKEN_SLOT, bytes32(uint256(_decimals) << 160 | uint256(uint160(_token))));
Storage.setBytes32(GAS_PAYING_TOKEN_NAME_SLOT, _name);
Storage.setBytes32(GAS_PAYING_TOKEN_SYMBOL_SLOT, _symbol);
}
/// @notice Maps a string to a normalized null-terminated small string.
function sanitize(string memory _str) internal pure returns (bytes32) {
require(bytes(_str).length <= 32, "GasPayingToken: string cannot be greater than 32 bytes");
return LibString.toSmallString(_str);
}
}// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @notice Error returns when a non-depositor account tries to set L1 block values. error NotDepositor(); /// @notice Error when a non-cross L2 Inbox sender tries to call the `isDeposit()` method. error NotCrossL2Inbox(); /// @notice Error when a chain ID is not in the interop dependency set. error NotDependency(); /// @notice Error when the interop dependency set size is too large. error DependencySetSizeTooLarge(); /// @notice Error when a chain ID already in the interop dependency set is attempted to be added. error AlreadyDependency(); /// @notice Error when the chain's chain ID is attempted to be removed from the interop dependency set. error CantRemovedDependency();
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title Predeploys
/// @notice Contains constant addresses for protocol contracts that are pre-deployed to the L2 system.
// This excludes the preinstalls (non-protocol contracts).
library Predeploys {
/// @notice Number of predeploy-namespace addresses reserved for protocol usage.
uint256 internal constant PREDEPLOY_COUNT = 2048;
/// @custom:legacy
/// @notice Address of the LegacyMessagePasser predeploy. Deprecate. Use the updated
/// L2ToL1MessagePasser contract instead.
address internal constant LEGACY_MESSAGE_PASSER = 0x4200000000000000000000000000000000000000;
/// @custom:legacy
/// @notice Address of the L1MessageSender predeploy. Deprecated. Use L2CrossDomainMessenger
/// or access tx.origin (or msg.sender) in a L1 to L2 transaction instead.
/// Not embedded into new OP-Stack chains.
address internal constant L1_MESSAGE_SENDER = 0x4200000000000000000000000000000000000001;
/// @custom:legacy
/// @notice Address of the DeployerWhitelist predeploy. No longer active.
address internal constant DEPLOYER_WHITELIST = 0x4200000000000000000000000000000000000002;
/// @notice Address of the canonical WETH contract.
address internal constant WETH = 0x4200000000000000000000000000000000000006;
/// @notice Address of the L2CrossDomainMessenger predeploy.
address internal constant L2_CROSS_DOMAIN_MESSENGER = 0x4200000000000000000000000000000000000007;
/// @notice Address of the GasPriceOracle predeploy. Includes fee information
/// and helpers for computing the L1 portion of the transaction fee.
address internal constant GAS_PRICE_ORACLE = 0x420000000000000000000000000000000000000F;
/// @notice Address of the L2StandardBridge predeploy.
address internal constant L2_STANDARD_BRIDGE = 0x4200000000000000000000000000000000000010;
//// @notice Address of the SequencerFeeWallet predeploy.
address internal constant SEQUENCER_FEE_WALLET = 0x4200000000000000000000000000000000000011;
/// @notice Address of the OptimismMintableERC20Factory predeploy.
address internal constant OPTIMISM_MINTABLE_ERC20_FACTORY = 0x4200000000000000000000000000000000000012;
/// @custom:legacy
/// @notice Address of the L1BlockNumber predeploy. Deprecated. Use the L1Block predeploy
/// instead, which exposes more information about the L1 state.
address internal constant L1_BLOCK_NUMBER = 0x4200000000000000000000000000000000000013;
/// @notice Address of the L2ERC721Bridge predeploy.
address internal constant L2_ERC721_BRIDGE = 0x4200000000000000000000000000000000000014;
/// @notice Address of the L1Block predeploy.
address internal constant L1_BLOCK_ATTRIBUTES = 0x4200000000000000000000000000000000000015;
/// @notice Address of the L2ToL1MessagePasser predeploy.
address internal constant L2_TO_L1_MESSAGE_PASSER = 0x4200000000000000000000000000000000000016;
/// @notice Address of the OptimismMintableERC721Factory predeploy.
address internal constant OPTIMISM_MINTABLE_ERC721_FACTORY = 0x4200000000000000000000000000000000000017;
/// @notice Address of the ProxyAdmin predeploy.
address internal constant PROXY_ADMIN = 0x4200000000000000000000000000000000000018;
/// @notice Address of the BaseFeeVault predeploy.
address internal constant BASE_FEE_VAULT = 0x4200000000000000000000000000000000000019;
/// @notice Address of the L1FeeVault predeploy.
address internal constant L1_FEE_VAULT = 0x420000000000000000000000000000000000001A;
/// @notice Address of the SchemaRegistry predeploy.
address internal constant SCHEMA_REGISTRY = 0x4200000000000000000000000000000000000020;
/// @notice Address of the EAS predeploy.
address internal constant EAS = 0x4200000000000000000000000000000000000021;
/// @notice Address of the GovernanceToken predeploy.
address internal constant GOVERNANCE_TOKEN = 0x4200000000000000000000000000000000000042;
/// @custom:legacy
/// @notice Address of the LegacyERC20ETH predeploy. Deprecated. Balances are migrated to the
/// state trie as of the Bedrock upgrade. Contract has been locked and write functions
/// can no longer be accessed.
address internal constant LEGACY_ERC20_ETH = 0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000;
/// @notice Address of the CrossL2Inbox predeploy.
address internal constant CROSS_L2_INBOX = 0x4200000000000000000000000000000000000022;
/// @notice Address of the L2ToL2CrossDomainMessenger predeploy.
address internal constant L2_TO_L2_CROSS_DOMAIN_MESSENGER = 0x4200000000000000000000000000000000000023;
/// @notice Address of the SuperchainWETH predeploy.
address internal constant SUPERCHAIN_WETH = 0x4200000000000000000000000000000000000024;
/// @notice Address of the ETHLiquidity predeploy.
address internal constant ETH_LIQUIDITY = 0x4200000000000000000000000000000000000025;
/// @notice Address of the OptimismSuperchainERC20Factory predeploy.
address internal constant OPTIMISM_SUPERCHAIN_ERC20_FACTORY = 0x4200000000000000000000000000000000000026;
/// @notice Address of the OptimismSuperchainERC20Beacon predeploy.
address internal constant OPTIMISM_SUPERCHAIN_ERC20_BEACON = 0x4200000000000000000000000000000000000027;
// TODO: Precalculate the address of the implementation contract
/// @notice Arbitrary address of the OptimismSuperchainERC20 implementation contract.
address internal constant OPTIMISM_SUPERCHAIN_ERC20 = 0xB9415c6cA93bdC545D4c5177512FCC22EFa38F28;
/// @notice Returns the name of the predeploy at the given address.
function getName(address _addr) internal pure returns (string memory out_) {
require(isPredeployNamespace(_addr), "Predeploys: address must be a predeploy");
if (_addr == LEGACY_MESSAGE_PASSER) return "LegacyMessagePasser";
if (_addr == L1_MESSAGE_SENDER) return "L1MessageSender";
if (_addr == DEPLOYER_WHITELIST) return "DeployerWhitelist";
if (_addr == WETH) return "WETH";
if (_addr == L2_CROSS_DOMAIN_MESSENGER) return "L2CrossDomainMessenger";
if (_addr == GAS_PRICE_ORACLE) return "GasPriceOracle";
if (_addr == L2_STANDARD_BRIDGE) return "L2StandardBridge";
if (_addr == SEQUENCER_FEE_WALLET) return "SequencerFeeVault";
if (_addr == OPTIMISM_MINTABLE_ERC20_FACTORY) return "OptimismMintableERC20Factory";
if (_addr == L1_BLOCK_NUMBER) return "L1BlockNumber";
if (_addr == L2_ERC721_BRIDGE) return "L2ERC721Bridge";
if (_addr == L1_BLOCK_ATTRIBUTES) return "L1Block";
if (_addr == L2_TO_L1_MESSAGE_PASSER) return "L2ToL1MessagePasser";
if (_addr == OPTIMISM_MINTABLE_ERC721_FACTORY) return "OptimismMintableERC721Factory";
if (_addr == PROXY_ADMIN) return "ProxyAdmin";
if (_addr == BASE_FEE_VAULT) return "BaseFeeVault";
if (_addr == L1_FEE_VAULT) return "L1FeeVault";
if (_addr == SCHEMA_REGISTRY) return "SchemaRegistry";
if (_addr == EAS) return "EAS";
if (_addr == GOVERNANCE_TOKEN) return "GovernanceToken";
if (_addr == LEGACY_ERC20_ETH) return "LegacyERC20ETH";
if (_addr == CROSS_L2_INBOX) return "CrossL2Inbox";
if (_addr == L2_TO_L2_CROSS_DOMAIN_MESSENGER) return "L2ToL2CrossDomainMessenger";
if (_addr == SUPERCHAIN_WETH) return "SuperchainWETH";
if (_addr == ETH_LIQUIDITY) return "ETHLiquidity";
if (_addr == OPTIMISM_SUPERCHAIN_ERC20_FACTORY) return "OptimismSuperchainERC20Factory";
if (_addr == OPTIMISM_SUPERCHAIN_ERC20_BEACON) return "OptimismSuperchainERC20Beacon";
revert("Predeploys: unnamed predeploy");
}
/// @notice Returns true if the predeploy is not proxied.
function notProxied(address _addr) internal pure returns (bool) {
return _addr == GOVERNANCE_TOKEN || _addr == WETH;
}
/// @notice Returns true if the address is a defined predeploy that is embedded into new OP-Stack chains.
function isSupportedPredeploy(address _addr, bool _useInterop) internal pure returns (bool) {
return _addr == LEGACY_MESSAGE_PASSER || _addr == DEPLOYER_WHITELIST || _addr == WETH
|| _addr == L2_CROSS_DOMAIN_MESSENGER || _addr == GAS_PRICE_ORACLE || _addr == L2_STANDARD_BRIDGE
|| _addr == SEQUENCER_FEE_WALLET || _addr == OPTIMISM_MINTABLE_ERC20_FACTORY || _addr == L1_BLOCK_NUMBER
|| _addr == L2_ERC721_BRIDGE || _addr == L1_BLOCK_ATTRIBUTES || _addr == L2_TO_L1_MESSAGE_PASSER
|| _addr == OPTIMISM_MINTABLE_ERC721_FACTORY || _addr == PROXY_ADMIN || _addr == BASE_FEE_VAULT
|| _addr == L1_FEE_VAULT || _addr == SCHEMA_REGISTRY || _addr == EAS || _addr == GOVERNANCE_TOKEN
|| (_useInterop && _addr == CROSS_L2_INBOX) || (_useInterop && _addr == L2_TO_L2_CROSS_DOMAIN_MESSENGER)
|| (_useInterop && _addr == SUPERCHAIN_WETH) || (_useInterop && _addr == ETH_LIQUIDITY)
|| (_useInterop && _addr == OPTIMISM_SUPERCHAIN_ERC20_FACTORY)
|| (_useInterop && _addr == OPTIMISM_SUPERCHAIN_ERC20_BEACON);
}
function isPredeployNamespace(address _addr) internal pure returns (bool) {
return uint160(_addr) >> 11 == uint160(0x4200000000000000000000000000000000000000) >> 11;
}
/// @notice Function to compute the expected address of the predeploy implementation
/// in the genesis state.
function predeployToCodeNamespace(address _addr) internal pure returns (address) {
require(
isPredeployNamespace(_addr), "Predeploys: can only derive code-namespace address for predeploy addresses"
);
return address(
uint160(uint256(uint160(_addr)) & 0xffff | uint256(uint160(0xc0D3C0d3C0d3C0D3c0d3C0d3c0D3C0d3c0d30000)))
);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title Preinstalls
/// @notice Contains constant addresses for non-protocol contracts that are pre-deployed to the L2 system.
// This excludes the predeploys (protocol contracts).
library Preinstalls {
/// @notice Address of the MultiCall3 predeploy.
address internal constant MultiCall3 = 0xcA11bde05977b3631167028862bE2a173976CA11;
/// @notice Address of the Create2Deployer predeploy.
address internal constant Create2Deployer = 0x13b0D85CcB8bf860b6b79AF3029fCA081AE9beF2;
/// @notice Address of the Safe_v130 predeploy.
address internal constant Safe_v130 = 0x69f4D1788e39c87893C980c06EdF4b7f686e2938;
/// @notice Address of the SafeL2_v130 predeploy.
address internal constant SafeL2_v130 = 0xfb1bffC9d739B8D520DaF37dF666da4C687191EA;
/// @notice Address of the MultiSendCallOnly_v130 predeploy.
address internal constant MultiSendCallOnly_v130 = 0xA1dabEF33b3B82c7814B6D82A79e50F4AC44102B;
/// @notice Address of the SafeSingletonFactory predeploy.
address internal constant SafeSingletonFactory = 0x914d7Fec6aaC8cd542e72Bca78B30650d45643d7;
/// @notice Address of the DeterministicDeploymentProxy predeploy.
address internal constant DeterministicDeploymentProxy = 0x4e59b44847b379578588920cA78FbF26c0B4956C;
/// @notice Address of the MultiSend_v130 predeploy.
address internal constant MultiSend_v130 = 0x998739BFdAAdde7C933B942a68053933098f9EDa;
/// @notice Address of the Permit2 predeploy.
address internal constant Permit2 = 0x000000000022D473030F116dDEE9F6B43aC78BA3;
/// @notice Address of the SenderCreator_v060 predeploy.
address internal constant SenderCreator_v060 = 0x7fc98430eAEdbb6070B35B39D798725049088348;
/// @notice Address of the EntryPoint_v060 predeploy.
address internal constant EntryPoint_v060 = 0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789;
/// @notice Address of the SenderCreator_v070 predeploy.
address internal constant SenderCreator_v070 = 0xEFC2c1444eBCC4Db75e7613d20C6a62fF67A167C;
/// @notice Address of the EntryPoint_v070 predeploy.
address internal constant EntryPoint_v070 = 0x0000000071727De22E5E9d8BAf0edAc6f37da032;
/// @notice Address of the CreateX predeploy.
address internal constant CreateX = 0xba5Ed099633D3B313e4D5F7bdc1305d3c28ba5Ed;
/// @notice Address of beacon block roots contract, introduced in the Cancun upgrade.
/// See BEACON_ROOTS_ADDRESS in EIP-4788.
/// This contract is introduced in L2 through an Ecotone upgrade transaction, if not already in genesis.
address internal constant BeaconBlockRoots = 0x000F3df6D732807Ef1319fB7B8bB8522d0Beac02;
/// @notice See https://eips.ethereum.org/EIPS/eip-4788, this is the address of the sender of the deployment tx.
/// The nonce of this account must be non-zero, to ensure the Ecotone upgrade tx is still successful
/// if the code is already in place.
address internal constant BeaconBlockRootsSender = 0x0B799C86a49DEeb90402691F1041aa3AF2d3C875;
// @notice Permit2 code is templated. The template is a copy of the Mainnet Ethereum L1 Permit2 deployment.
// This deployed bytecode contains two immutable values _CACHED_CHAIN_ID and _CACHED_DOMAIN_SEPARATOR,
// which depend on the chain-ID (the domain-separator is computed with the chain-ID as input).
// Note that the _CACHED_DOMAIN_SEPARATOR in the Permit2 deployed-bytecode of the
// Permit2 test-utils is wrong, and does not match the chain-ID of 31337 in said bytecode.
// These two values are substituted for accuracy when the code is retrieved with getPermit2Code(chainid).
bytes internal constant Permit2TemplateCode =
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bytes internal constant MultiCall3Code =
hex"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bytes internal constant Create2DeployerCode =
hex"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";
bytes internal constant Safe_v130Code =
hex"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bytes internal constant SafeL2_v130Code =
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bytes internal constant MultiSendCallOnly_v130Code =
hex"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";
bytes internal constant SafeSingletonFactoryCode =
hex"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe03601600081602082378035828234f58015156039578182fd5b8082525050506014600cf3";
bytes internal constant DeterministicDeploymentProxyCode =
hex"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe03601600081602082378035828234f58015156039578182fd5b8082525050506014600cf3";
bytes internal constant MultiSend_v130Code =
hex"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";
bytes internal constant SenderCreator_v060Code =
hex"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";
bytes internal constant EntryPoint_v060Code =
hex"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bytes internal constant SenderCreator_v070Code =
hex"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";
bytes internal constant EntryPoint_v070Code =
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bytes internal constant CreateXCode =
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bytes internal constant BeaconBlockRootsCode =
hex"3373fffffffffffffffffffffffffffffffffffffffe14604d57602036146024575f5ffd5b5f35801560495762001fff810690815414603c575f5ffd5b62001fff01545f5260205ff35b5f5ffd5b62001fff42064281555f359062001fff015500";
function getDeployedCode(address _addr, uint256 _chainID) internal pure returns (bytes memory out_) {
if (_addr == MultiCall3) return MultiCall3Code;
if (_addr == Create2Deployer) return Create2DeployerCode;
if (_addr == Safe_v130) return Safe_v130Code;
if (_addr == SafeL2_v130) return SafeL2_v130Code;
if (_addr == MultiSendCallOnly_v130) return MultiSendCallOnly_v130Code;
if (_addr == SafeSingletonFactory) return SafeSingletonFactoryCode;
if (_addr == DeterministicDeploymentProxy) return DeterministicDeploymentProxyCode;
if (_addr == MultiSend_v130) return MultiSend_v130Code;
if (_addr == SenderCreator_v060) return SenderCreator_v060Code;
if (_addr == EntryPoint_v060) return EntryPoint_v060Code;
if (_addr == SenderCreator_v070) return SenderCreator_v070Code;
if (_addr == EntryPoint_v070) return EntryPoint_v070Code;
if (_addr == Permit2) return getPermit2Code(_chainID);
if (_addr == BeaconBlockRoots) return BeaconBlockRootsCode;
if (_addr == CreateX) return CreateXCode;
revert("Preinstalls: unknown preinstall");
}
/// @notice Returns the name of the preinstall at the given address.
function getName(address _addr) internal pure returns (string memory out_) {
if (_addr == Permit2) return "Permit2";
if (_addr == MultiCall3) return "MultiCall3";
if (_addr == Create2Deployer) return "Create2Deployer";
if (_addr == Safe_v130) return "Safe_v130";
if (_addr == SafeL2_v130) return "SafeL2_v130";
if (_addr == MultiSendCallOnly_v130) return "MultiSendCallOnly_v130";
if (_addr == SafeSingletonFactory) return "SafeSingletonFactory";
if (_addr == DeterministicDeploymentProxy) return "DeterministicDeploymentProxy";
if (_addr == MultiSend_v130) return "MultiSend_v130";
if (_addr == SenderCreator_v060) return "SenderCreator_v060";
if (_addr == EntryPoint_v060) return "EntryPoint_v060";
if (_addr == SenderCreator_v070) return "SenderCreator_v070";
if (_addr == EntryPoint_v070) return "EntryPoint_v070";
if (_addr == BeaconBlockRoots) return "BeaconBlockRoots";
if (_addr == CreateX) return "CreateX";
revert("Preinstalls: unnamed preinstall");
}
function getPermit2Code(uint256 _chainID) internal pure returns (bytes memory out_) {
bytes32 nameHash = keccak256(abi.encodePacked("Permit2"));
bytes32 typeHash =
keccak256(abi.encodePacked("EIP712Domain(string name,uint256 chainId,address verifyingContract)"));
bytes32 domainSeparator = keccak256(abi.encode(typeHash, nameHash, _chainID, Permit2));
out_ = Permit2TemplateCode;
assembly {
mstore(add(add(out_, 0x20), 6945), _chainID)
mstore(add(add(out_, 0x20), 6983), domainSeparator)
}
return out_;
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title SafeCall
/// @notice Perform low level safe calls
library SafeCall {
/// @notice Performs a low level call without copying any returndata.
/// @dev Passes no calldata to the call context.
/// @param _target Address to call
/// @param _gas Amount of gas to pass to the call
/// @param _value Amount of value to pass to the call
function send(address _target, uint256 _gas, uint256 _value) internal returns (bool success_) {
assembly {
success_ :=
call(
_gas, // gas
_target, // recipient
_value, // ether value
0, // inloc
0, // inlen
0, // outloc
0 // outlen
)
}
}
/// @notice Perform a low level call with all gas without copying any returndata
/// @param _target Address to call
/// @param _value Amount of value to pass to the call
function send(address _target, uint256 _value) internal returns (bool success_) {
success_ = send(_target, gasleft(), _value);
}
/// @notice Perform a low level call without copying any returndata
/// @param _target Address to call
/// @param _gas Amount of gas to pass to the call
/// @param _value Amount of value to pass to the call
/// @param _calldata Calldata to pass to the call
function call(
address _target,
uint256 _gas,
uint256 _value,
bytes memory _calldata
)
internal
returns (bool success_)
{
assembly {
success_ :=
call(
_gas, // gas
_target, // recipient
_value, // ether value
add(_calldata, 32), // inloc
mload(_calldata), // inlen
0, // outloc
0 // outlen
)
}
}
/// @notice Perform a low level call without copying any returndata
/// @param _target Address to call
/// @param _value Amount of value to pass to the call
/// @param _calldata Calldata to pass to the call
function call(address _target, uint256 _value, bytes memory _calldata) internal returns (bool success_) {
success_ = call({ _target: _target, _gas: gasleft(), _value: _value, _calldata: _calldata });
}
/// @notice Perform a low level call without copying any returndata
/// @param _target Address to call
/// @param _calldata Calldata to pass to the call
function call(address _target, bytes memory _calldata) internal returns (bool success_) {
success_ = call({ _target: _target, _gas: gasleft(), _value: 0, _calldata: _calldata });
}
/// @notice Helper function to determine if there is sufficient gas remaining within the context
/// to guarantee that the minimum gas requirement for a call will be met as well as
/// optionally reserving a specified amount of gas for after the call has concluded.
/// @param _minGas The minimum amount of gas that may be passed to the target context.
/// @param _reservedGas Optional amount of gas to reserve for the caller after the execution
/// of the target context.
/// @return `true` if there is enough gas remaining to safely supply `_minGas` to the target
/// context as well as reserve `_reservedGas` for the caller after the execution of
/// the target context.
/// @dev !!!!! FOOTGUN ALERT !!!!!
/// 1.) The 40_000 base buffer is to account for the worst case of the dynamic cost of the
/// `CALL` opcode's `address_access_cost`, `positive_value_cost`, and
/// `value_to_empty_account_cost` factors with an added buffer of 5,700 gas. It is
/// still possible to self-rekt by initiating a withdrawal with a minimum gas limit
/// that does not account for the `memory_expansion_cost` & `code_execution_cost`
/// factors of the dynamic cost of the `CALL` opcode.
/// 2.) This function should *directly* precede the external call if possible. There is an
/// added buffer to account for gas consumed between this check and the call, but it
/// is only 5,700 gas.
/// 3.) Because EIP-150 ensures that a maximum of 63/64ths of the remaining gas in the call
/// frame may be passed to a subcontext, we need to ensure that the gas will not be
/// truncated.
/// 4.) Use wisely. This function is not a silver bullet.
function hasMinGas(uint256 _minGas, uint256 _reservedGas) internal view returns (bool) {
bool _hasMinGas;
assembly {
// Equation: gas × 63 ≥ minGas × 64 + 63(40_000 + reservedGas)
_hasMinGas := iszero(lt(mul(gas(), 63), add(mul(_minGas, 64), mul(add(40000, _reservedGas), 63))))
}
return _hasMinGas;
}
/// @notice Perform a low level call without copying any returndata. This function
/// will revert if the call cannot be performed with the specified minimum
/// gas.
/// @param _target Address to call
/// @param _minGas The minimum amount of gas that may be passed to the call
/// @param _value Amount of value to pass to the call
/// @param _calldata Calldata to pass to the call
function callWithMinGas(
address _target,
uint256 _minGas,
uint256 _value,
bytes memory _calldata
)
internal
returns (bool)
{
bool _success;
bool _hasMinGas = hasMinGas(_minGas, 0);
assembly {
// Assertion: gasleft() >= (_minGas * 64) / 63 + 40_000
if iszero(_hasMinGas) {
// Store the "Error(string)" selector in scratch space.
mstore(0, 0x08c379a0)
// Store the pointer to the string length in scratch space.
mstore(32, 32)
// Store the string.
//
// SAFETY:
// - We pad the beginning of the string with two zero bytes as well as the
// length (24) to ensure that we override the free memory pointer at offset
// 0x40. This is necessary because the free memory pointer is likely to
// be greater than 1 byte when this function is called, but it is incredibly
// unlikely that it will be greater than 3 bytes. As for the data within
// 0x60, it is ensured that it is 0 due to 0x60 being the zero offset.
// - It's fine to clobber the free memory pointer, we're reverting.
mstore(88, 0x0000185361666543616c6c3a204e6f7420656e6f75676820676173)
// Revert with 'Error("SafeCall: Not enough gas")'
revert(28, 100)
}
// The call will be supplied at least ((_minGas * 64) / 63) gas due to the
// above assertion. This ensures that, in all circumstances (except for when the
// `_minGas` does not account for the `memory_expansion_cost` and `code_execution_cost`
// factors of the dynamic cost of the `CALL` opcode), the call will receive at least
// the minimum amount of gas specified.
_success :=
call(
gas(), // gas
_target, // recipient
_value, // ether value
add(_calldata, 32), // inloc
mload(_calldata), // inlen
0x00, // outloc
0x00 // outlen
)
}
return _success;
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title Storage
/// @notice Storage handles reading and writing to arbitary storage locations
library Storage {
/// @notice Returns an address stored in an arbitrary storage slot.
/// These storage slots decouple the storage layout from
/// solc's automation.
/// @param _slot The storage slot to retrieve the address from.
function getAddress(bytes32 _slot) internal view returns (address addr_) {
assembly {
addr_ := sload(_slot)
}
}
/// @notice Stores an address in an arbitrary storage slot, `_slot`.
/// @param _slot The storage slot to store the address in.
/// @param _address The protocol version to store
/// @dev WARNING! This function must be used cautiously, as it allows for overwriting addresses
/// in arbitrary storage slots.
function setAddress(bytes32 _slot, address _address) internal {
assembly {
sstore(_slot, _address)
}
}
/// @notice Returns a uint256 stored in an arbitrary storage slot.
/// These storage slots decouple the storage layout from
/// solc's automation.
/// @param _slot The storage slot to retrieve the address from.
function getUint(bytes32 _slot) internal view returns (uint256 value_) {
assembly {
value_ := sload(_slot)
}
}
/// @notice Stores a value in an arbitrary storage slot, `_slot`.
/// @param _slot The storage slot to store the address in.
/// @param _value The protocol version to store
/// @dev WARNING! This function must be used cautiously, as it allows for overwriting values
/// in arbitrary storage slots.
function setUint(bytes32 _slot, uint256 _value) internal {
assembly {
sstore(_slot, _value)
}
}
/// @notice Returns a bytes32 stored in an arbitrary storage slot.
/// These storage slots decouple the storage layout from
/// solc's automation.
/// @param _slot The storage slot to retrieve the address from.
function getBytes32(bytes32 _slot) internal view returns (bytes32 value_) {
assembly {
value_ := sload(_slot)
}
}
/// @notice Stores a bytes32 value in an arbitrary storage slot, `_slot`.
/// @param _slot The storage slot to store the address in.
/// @param _value The bytes32 value to store.
/// @dev WARNING! This function must be used cautiously, as it allows for overwriting values
/// in arbitrary storage slots.
function setBytes32(bytes32 _slot, bytes32 _value) internal {
assembly {
sstore(_slot, _value)
}
}
/// @notice Stores a bool value in an arbitrary storage slot, `_slot`.
/// @param _slot The storage slot to store the bool in.
/// @param _value The bool value to store
/// @dev WARNING! This function must be used cautiously, as it allows for overwriting values
/// in arbitrary storage slots.
function setBool(bytes32 _slot, bool _value) internal {
assembly {
sstore(_slot, _value)
}
}
/// @notice Returns a bool stored in an arbitrary storage slot.
/// @param _slot The storage slot to retrieve the bool from.
function getBool(bytes32 _slot) internal view returns (bool value_) {
assembly {
value_ := sload(_slot)
}
}
}// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;
import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import { ERC20Permit } from "@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol";
import { IERC165 } from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import { ILegacyMintableERC20, IOptimismMintableERC20 } from "src/universal/interfaces/IOptimismMintableERC20.sol";
import { ISemver } from "src/universal/interfaces/ISemver.sol";
import { Preinstalls } from "src/libraries/Preinstalls.sol";
/// @title OptimismMintableERC20
/// @notice OptimismMintableERC20 is a standard extension of the base ERC20 token contract designed
/// to allow the StandardBridge contracts to mint and burn tokens. This makes it possible to
/// use an OptimismMintablERC20 as the L2 representation of an L1 token, or vice-versa.
/// Designed to be backwards compatible with the older StandardL2ERC20 token which was only
/// meant for use on L2.
contract OptimismMintableERC20 is IOptimismMintableERC20, ILegacyMintableERC20, ERC20Permit, ISemver {
/// @notice Address of the corresponding version of this token on the remote chain.
address public immutable REMOTE_TOKEN;
/// @notice Address of the StandardBridge on this network.
address public immutable BRIDGE;
/// @notice Decimals of the token
uint8 private immutable DECIMALS;
/// @notice Emitted whenever tokens are minted for an account.
/// @param account Address of the account tokens are being minted for.
/// @param amount Amount of tokens minted.
event Mint(address indexed account, uint256 amount);
/// @notice Emitted whenever tokens are burned from an account.
/// @param account Address of the account tokens are being burned from.
/// @param amount Amount of tokens burned.
event Burn(address indexed account, uint256 amount);
/// @notice A modifier that only allows the bridge to call
modifier onlyBridge() {
require(msg.sender == BRIDGE, "OptimismMintableERC20: only bridge can mint and burn");
_;
}
/// @notice Semantic version.
/// @custom:semver 1.4.0-beta.1
string public constant version = "1.4.0-beta.1";
/// @notice Getter function for the permit2 address. It deterministically deployed
/// so it will always be at the same address. It is also included as a preinstall,
/// so it exists in the genesis state of chains.
/// @return Address of permit2 on this network.
function PERMIT2() public pure returns (address) {
return Preinstalls.Permit2;
}
/// @param _bridge Address of the L2 standard bridge.
/// @param _remoteToken Address of the corresponding L1 token.
/// @param _name ERC20 name.
/// @param _symbol ERC20 symbol.
constructor(
address _bridge,
address _remoteToken,
string memory _name,
string memory _symbol,
uint8 _decimals
)
ERC20(_name, _symbol)
ERC20Permit(_name)
{
REMOTE_TOKEN = _remoteToken;
BRIDGE = _bridge;
DECIMALS = _decimals;
}
/// @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`).
/// 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 override returns (uint8) {
return DECIMALS;
}
/// @notice Returns the allowance for a spender on the owner's tokens.
/// If the spender is the permit2 address, returns the maximum uint256 value.
/// @param _owner owner of the tokens.
/// @param _spender spender of the tokens.
/// @return Allowance for the spender.
function allowance(address _owner, address _spender) public view override returns (uint256) {
if (_spender == PERMIT2()) {
return type(uint256).max;
}
return super.allowance(_owner, _spender);
}
/// @notice Allows the StandardBridge on this network to mint tokens.
/// @param _to Address to mint tokens to.
/// @param _amount Amount of tokens to mint.
function mint(
address _to,
uint256 _amount
)
external
virtual
override(IOptimismMintableERC20, ILegacyMintableERC20)
onlyBridge
{
_mint(_to, _amount);
emit Mint(_to, _amount);
}
/// @notice Allows the StandardBridge on this network to burn tokens.
/// @param _from Address to burn tokens from.
/// @param _amount Amount of tokens to burn.
function burn(
address _from,
uint256 _amount
)
external
virtual
override(IOptimismMintableERC20, ILegacyMintableERC20)
onlyBridge
{
_burn(_from, _amount);
emit Burn(_from, _amount);
}
/// @notice ERC165 interface check function.
/// @param _interfaceId Interface ID to check.
/// @return Whether or not the interface is supported by this contract.
function supportsInterface(bytes4 _interfaceId) external pure virtual returns (bool) {
bytes4 iface1 = type(IERC165).interfaceId;
// Interface corresponding to the legacy L2StandardERC20.
bytes4 iface2 = type(ILegacyMintableERC20).interfaceId;
// Interface corresponding to the updated OptimismMintableERC20 (this contract).
bytes4 iface3 = type(IOptimismMintableERC20).interfaceId;
return _interfaceId == iface1 || _interfaceId == iface2 || _interfaceId == iface3;
}
/// @custom:legacy
/// @notice Legacy getter for the remote token. Use REMOTE_TOKEN going forward.
function l1Token() public view returns (address) {
return REMOTE_TOKEN;
}
/// @custom:legacy
/// @notice Legacy getter for the bridge. Use BRIDGE going forward.
function l2Bridge() public view returns (address) {
return BRIDGE;
}
/// @custom:legacy
/// @notice Legacy getter for REMOTE_TOKEN.
function remoteToken() public view returns (address) {
return REMOTE_TOKEN;
}
/// @custom:legacy
/// @notice Legacy getter for BRIDGE.
function bridge() public view returns (address) {
return BRIDGE;
}
}// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { ERC165Checker } from "@openzeppelin/contracts/utils/introspection/ERC165Checker.sol";
import { Address } from "@openzeppelin/contracts/utils/Address.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { SafeCall } from "src/libraries/SafeCall.sol";
import { IOptimismMintableERC20, ILegacyMintableERC20 } from "src/universal/interfaces/IOptimismMintableERC20.sol";
import { ICrossDomainMessenger } from "src/universal/interfaces/ICrossDomainMessenger.sol";
import { OptimismMintableERC20 } from "src/universal/OptimismMintableERC20.sol";
import { Initializable } from "@openzeppelin/contracts/proxy/utils/Initializable.sol";
import { Constants } from "src/libraries/Constants.sol";
/// @custom:upgradeable
/// @title StandardBridge
/// @notice StandardBridge is a base contract for the L1 and L2 standard ERC20 bridges. It handles
/// the core bridging logic, including escrowing tokens that are native to the local chain
/// and minting/burning tokens that are native to the remote chain.
abstract contract StandardBridge is Initializable {
using SafeERC20 for IERC20;
/// @notice The L2 gas limit set when eth is depoisited using the receive() function.
uint32 internal constant RECEIVE_DEFAULT_GAS_LIMIT = 200_000;
/// @custom:legacy
/// @custom:spacer messenger
/// @notice Spacer for backwards compatibility.
bytes30 private spacer_0_2_30;
/// @custom:legacy
/// @custom:spacer l2TokenBridge
/// @notice Spacer for backwards compatibility.
address private spacer_1_0_20;
/// @notice Mapping that stores deposits for a given pair of local and remote tokens.
mapping(address => mapping(address => uint256)) public deposits;
/// @notice Messenger contract on this domain.
/// @custom:network-specific
ICrossDomainMessenger public messenger;
/// @notice Corresponding bridge on the other domain.
/// @custom:network-specific
StandardBridge public otherBridge;
/// @notice Reserve extra slots (to a total of 50) in the storage layout for future upgrades.
/// A gap size of 45 was chosen here, so that the first slot used in a child contract
/// would be a multiple of 50.
uint256[45] private __gap;
/// @notice Emitted when an ETH bridge is initiated to the other chain.
/// @param from Address of the sender.
/// @param to Address of the receiver.
/// @param amount Amount of ETH sent.
/// @param extraData Extra data sent with the transaction.
event ETHBridgeInitiated(address indexed from, address indexed to, uint256 amount, bytes extraData);
/// @notice Emitted when an ETH bridge is finalized on this chain.
/// @param from Address of the sender.
/// @param to Address of the receiver.
/// @param amount Amount of ETH sent.
/// @param extraData Extra data sent with the transaction.
event ETHBridgeFinalized(address indexed from, address indexed to, uint256 amount, bytes extraData);
/// @notice Emitted when an ERC20 bridge is initiated to the other chain.
/// @param localToken Address of the ERC20 on this chain.
/// @param remoteToken Address of the ERC20 on the remote chain.
/// @param from Address of the sender.
/// @param to Address of the receiver.
/// @param amount Amount of the ERC20 sent.
/// @param extraData Extra data sent with the transaction.
event ERC20BridgeInitiated(
address indexed localToken,
address indexed remoteToken,
address indexed from,
address to,
uint256 amount,
bytes extraData
);
/// @notice Emitted when an ERC20 bridge is finalized on this chain.
/// @param localToken Address of the ERC20 on this chain.
/// @param remoteToken Address of the ERC20 on the remote chain.
/// @param from Address of the sender.
/// @param to Address of the receiver.
/// @param amount Amount of the ERC20 sent.
/// @param extraData Extra data sent with the transaction.
event ERC20BridgeFinalized(
address indexed localToken,
address indexed remoteToken,
address indexed from,
address to,
uint256 amount,
bytes extraData
);
/// @notice Only allow EOAs to call the functions. Note that this is not safe against contracts
/// calling code within their constructors, but also doesn't really matter since we're
/// just trying to prevent users accidentally depositing with smart contract wallets.
modifier onlyEOA() {
require(!Address.isContract(msg.sender), "StandardBridge: function can only be called from an EOA");
_;
}
/// @notice Ensures that the caller is a cross-chain message from the other bridge.
modifier onlyOtherBridge() {
require(
msg.sender == address(messenger) && messenger.xDomainMessageSender() == address(otherBridge),
"StandardBridge: function can only be called from the other bridge"
);
_;
}
/// @notice Initializer.
/// @param _messenger Contract for CrossDomainMessenger on this network.
/// @param _otherBridge Contract for the other StandardBridge contract.
function __StandardBridge_init(
ICrossDomainMessenger _messenger,
StandardBridge _otherBridge
)
internal
onlyInitializing
{
messenger = _messenger;
otherBridge = _otherBridge;
}
/// @notice Allows EOAs to bridge ETH by sending directly to the bridge.
/// Must be implemented by contracts that inherit.
receive() external payable virtual;
/// @notice Returns the address of the custom gas token and the token's decimals.
function gasPayingToken() internal view virtual returns (address, uint8);
/// @notice Returns whether the chain uses a custom gas token or not.
function isCustomGasToken() internal view returns (bool) {
(address token,) = gasPayingToken();
return token != Constants.ETHER;
}
/// @notice Getter for messenger contract.
/// Public getter is legacy and will be removed in the future. Use `messenger` instead.
/// @return Contract of the messenger on this domain.
/// @custom:legacy
function MESSENGER() external view returns (ICrossDomainMessenger) {
return messenger;
}
/// @notice Getter for the other bridge contract.
/// Public getter is legacy and will be removed in the future. Use `otherBridge` instead.
/// @return Contract of the bridge on the other network.
/// @custom:legacy
function OTHER_BRIDGE() external view returns (StandardBridge) {
return otherBridge;
}
/// @notice This function should return true if the contract is paused.
/// On L1 this function will check the SuperchainConfig for its paused status.
/// On L2 this function should be a no-op.
/// @return Whether or not the contract is paused.
function paused() public view virtual returns (bool) {
return false;
}
/// @notice Sends ETH to the sender's address on the other chain.
/// @param _minGasLimit Minimum amount of gas that the bridge can be relayed with.
/// @param _extraData Extra data to be sent with the transaction. Note that the recipient will
/// not be triggered with this data, but it will be emitted and can be used
/// to identify the transaction.
function bridgeETH(uint32 _minGasLimit, bytes calldata _extraData) public payable onlyEOA {
_initiateBridgeETH(msg.sender, msg.sender, msg.value, _minGasLimit, _extraData);
}
/// @notice Sends ETH to a receiver's address on the other chain. Note that if ETH is sent to a
/// smart contract and the call fails, the ETH will be temporarily locked in the
/// StandardBridge on the other chain until the call is replayed. If the call cannot be
/// replayed with any amount of gas (call always reverts), then the ETH will be
/// permanently locked in the StandardBridge on the other chain. ETH will also
/// be locked if the receiver is the other bridge, because finalizeBridgeETH will revert
/// in that case.
/// @param _to Address of the receiver.
/// @param _minGasLimit Minimum amount of gas that the bridge can be relayed with.
/// @param _extraData Extra data to be sent with the transaction. Note that the recipient will
/// not be triggered with this data, but it will be emitted and can be used
/// to identify the transaction.
function bridgeETHTo(address _to, uint32 _minGasLimit, bytes calldata _extraData) public payable {
_initiateBridgeETH(msg.sender, _to, msg.value, _minGasLimit, _extraData);
}
/// @notice Sends ERC20 tokens to the sender's address on the other chain.
/// @param _localToken Address of the ERC20 on this chain.
/// @param _remoteToken Address of the corresponding token on the remote chain.
/// @param _amount Amount of local tokens to deposit.
/// @param _minGasLimit Minimum amount of gas that the bridge can be relayed with.
/// @param _extraData Extra data to be sent with the transaction. Note that the recipient will
/// not be triggered with this data, but it will be emitted and can be used
/// to identify the transaction.
function bridgeERC20(
address _localToken,
address _remoteToken,
uint256 _amount,
uint32 _minGasLimit,
bytes calldata _extraData
)
public
virtual
onlyEOA
{
_initiateBridgeERC20(_localToken, _remoteToken, msg.sender, msg.sender, _amount, _minGasLimit, _extraData);
}
/// @notice Sends ERC20 tokens to a receiver's address on the other chain.
/// @param _localToken Address of the ERC20 on this chain.
/// @param _remoteToken Address of the corresponding token on the remote chain.
/// @param _to Address of the receiver.
/// @param _amount Amount of local tokens to deposit.
/// @param _minGasLimit Minimum amount of gas that the bridge can be relayed with.
/// @param _extraData Extra data to be sent with the transaction. Note that the recipient will
/// not be triggered with this data, but it will be emitted and can be used
/// to identify the transaction.
function bridgeERC20To(
address _localToken,
address _remoteToken,
address _to,
uint256 _amount,
uint32 _minGasLimit,
bytes calldata _extraData
)
public
virtual
{
_initiateBridgeERC20(_localToken, _remoteToken, msg.sender, _to, _amount, _minGasLimit, _extraData);
}
/// @notice Finalizes an ETH bridge on this chain. Can only be triggered by the other
/// StandardBridge contract on the remote chain.
/// @param _from Address of the sender.
/// @param _to Address of the receiver.
/// @param _amount Amount of ETH being bridged.
/// @param _extraData Extra data to be sent with the transaction. Note that the recipient will
/// not be triggered with this data, but it will be emitted and can be used
/// to identify the transaction.
function finalizeBridgeETH(
address _from,
address _to,
uint256 _amount,
bytes calldata _extraData
)
public
payable
onlyOtherBridge
{
require(paused() == false, "StandardBridge: paused");
require(isCustomGasToken() == false, "StandardBridge: cannot bridge ETH with custom gas token");
require(msg.value == _amount, "StandardBridge: amount sent does not match amount required");
require(_to != address(this), "StandardBridge: cannot send to self");
require(_to != address(messenger), "StandardBridge: cannot send to messenger");
// Emit the correct events. By default this will be _amount, but child
// contracts may override this function in order to emit legacy events as well.
_emitETHBridgeFinalized(_from, _to, _amount, _extraData);
bool success = SafeCall.call(_to, gasleft(), _amount, hex"");
require(success, "StandardBridge: ETH transfer failed");
}
/// @notice Finalizes an ERC20 bridge on this chain. Can only be triggered by the other
/// StandardBridge contract on the remote chain.
/// @param _localToken Address of the ERC20 on this chain.
/// @param _remoteToken Address of the corresponding token on the remote chain.
/// @param _from Address of the sender.
/// @param _to Address of the receiver.
/// @param _amount Amount of the ERC20 being bridged.
/// @param _extraData Extra data to be sent with the transaction. Note that the recipient will
/// not be triggered with this data, but it will be emitted and can be used
/// to identify the transaction.
function finalizeBridgeERC20(
address _localToken,
address _remoteToken,
address _from,
address _to,
uint256 _amount,
bytes calldata _extraData
)
public
onlyOtherBridge
{
require(paused() == false, "StandardBridge: paused");
if (_isOptimismMintableERC20(_localToken)) {
require(
_isCorrectTokenPair(_localToken, _remoteToken),
"StandardBridge: wrong remote token for Optimism Mintable ERC20 local token"
);
OptimismMintableERC20(_localToken).mint(_to, _amount);
} else {
deposits[_localToken][_remoteToken] = deposits[_localToken][_remoteToken] - _amount;
IERC20(_localToken).safeTransfer(_to, _amount);
}
// Emit the correct events. By default this will be ERC20BridgeFinalized, but child
// contracts may override this function in order to emit legacy events as well.
_emitERC20BridgeFinalized(_localToken, _remoteToken, _from, _to, _amount, _extraData);
}
/// @notice Initiates a bridge of ETH through the CrossDomainMessenger.
/// @param _from Address of the sender.
/// @param _to Address of the receiver.
/// @param _amount Amount of ETH being bridged.
/// @param _minGasLimit Minimum amount of gas that the bridge can be relayed with.
/// @param _extraData Extra data to be sent with the transaction. Note that the recipient will
/// not be triggered with this data, but it will be emitted and can be used
/// to identify the transaction.
function _initiateBridgeETH(
address _from,
address _to,
uint256 _amount,
uint32 _minGasLimit,
bytes memory _extraData
)
internal
{
require(isCustomGasToken() == false, "StandardBridge: cannot bridge ETH with custom gas token");
require(msg.value == _amount, "StandardBridge: bridging ETH must include sufficient ETH value");
// Emit the correct events. By default this will be _amount, but child
// contracts may override this function in order to emit legacy events as well.
_emitETHBridgeInitiated(_from, _to, _amount, _extraData);
messenger.sendMessage{ value: _amount }({
_target: address(otherBridge),
_message: abi.encodeWithSelector(this.finalizeBridgeETH.selector, _from, _to, _amount, _extraData),
_minGasLimit: _minGasLimit
});
}
/// @notice Sends ERC20 tokens to a receiver's address on the other chain.
/// @param _localToken Address of the ERC20 on this chain.
/// @param _remoteToken Address of the corresponding token on the remote chain.
/// @param _to Address of the receiver.
/// @param _amount Amount of local tokens to deposit.
/// @param _minGasLimit Minimum amount of gas that the bridge can be relayed with.
/// @param _extraData Extra data to be sent with the transaction. Note that the recipient will
/// not be triggered with this data, but it will be emitted and can be used
/// to identify the transaction.
function _initiateBridgeERC20(
address _localToken,
address _remoteToken,
address _from,
address _to,
uint256 _amount,
uint32 _minGasLimit,
bytes memory _extraData
)
internal
{
require(msg.value == 0, "StandardBridge: cannot send value");
if (_isOptimismMintableERC20(_localToken)) {
require(
_isCorrectTokenPair(_localToken, _remoteToken),
"StandardBridge: wrong remote token for Optimism Mintable ERC20 local token"
);
OptimismMintableERC20(_localToken).burn(_from, _amount);
} else {
IERC20(_localToken).safeTransferFrom(_from, address(this), _amount);
deposits[_localToken][_remoteToken] = deposits[_localToken][_remoteToken] + _amount;
}
// Emit the correct events. By default this will be ERC20BridgeInitiated, but child
// contracts may override this function in order to emit legacy events as well.
_emitERC20BridgeInitiated(_localToken, _remoteToken, _from, _to, _amount, _extraData);
messenger.sendMessage({
_target: address(otherBridge),
_message: abi.encodeWithSelector(
this.finalizeBridgeERC20.selector,
// Because this call will be executed on the remote chain, we reverse the order of
// the remote and local token addresses relative to their order in the
// finalizeBridgeERC20 function.
_remoteToken,
_localToken,
_from,
_to,
_amount,
_extraData
),
_minGasLimit: _minGasLimit
});
}
/// @notice Checks if a given address is an OptimismMintableERC20. Not perfect, but good enough.
/// Just the way we like it.
/// @param _token Address of the token to check.
/// @return True if the token is an OptimismMintableERC20.
function _isOptimismMintableERC20(address _token) internal view returns (bool) {
return ERC165Checker.supportsInterface(_token, type(ILegacyMintableERC20).interfaceId)
|| ERC165Checker.supportsInterface(_token, type(IOptimismMintableERC20).interfaceId);
}
/// @notice Checks if the "other token" is the correct pair token for the OptimismMintableERC20.
/// Calls can be saved in the future by combining this logic with
/// `_isOptimismMintableERC20`.
/// @param _mintableToken OptimismMintableERC20 to check against.
/// @param _otherToken Pair token to check.
/// @return True if the other token is the correct pair token for the OptimismMintableERC20.
function _isCorrectTokenPair(address _mintableToken, address _otherToken) internal view returns (bool) {
if (ERC165Checker.supportsInterface(_mintableToken, type(ILegacyMintableERC20).interfaceId)) {
return _otherToken == ILegacyMintableERC20(_mintableToken).l1Token();
} else {
return _otherToken == IOptimismMintableERC20(_mintableToken).remoteToken();
}
}
/// @notice Emits the ETHBridgeInitiated event and if necessary the appropriate legacy event
/// when an ETH bridge is finalized on this chain.
/// @param _from Address of the sender.
/// @param _to Address of the receiver.
/// @param _amount Amount of ETH sent.
/// @param _extraData Extra data sent with the transaction.
function _emitETHBridgeInitiated(
address _from,
address _to,
uint256 _amount,
bytes memory _extraData
)
internal
virtual
{
emit ETHBridgeInitiated(_from, _to, _amount, _extraData);
}
/// @notice Emits the ETHBridgeFinalized and if necessary the appropriate legacy event when an
/// ETH bridge is finalized on this chain.
/// @param _from Address of the sender.
/// @param _to Address of the receiver.
/// @param _amount Amount of ETH sent.
/// @param _extraData Extra data sent with the transaction.
function _emitETHBridgeFinalized(
address _from,
address _to,
uint256 _amount,
bytes memory _extraData
)
internal
virtual
{
emit ETHBridgeFinalized(_from, _to, _amount, _extraData);
}
/// @notice Emits the ERC20BridgeInitiated event and if necessary the appropriate legacy
/// event when an ERC20 bridge is initiated to the other chain.
/// @param _localToken Address of the ERC20 on this chain.
/// @param _remoteToken Address of the ERC20 on the remote chain.
/// @param _from Address of the sender.
/// @param _to Address of the receiver.
/// @param _amount Amount of the ERC20 sent.
/// @param _extraData Extra data sent with the transaction.
function _emitERC20BridgeInitiated(
address _localToken,
address _remoteToken,
address _from,
address _to,
uint256 _amount,
bytes memory _extraData
)
internal
virtual
{
emit ERC20BridgeInitiated(_localToken, _remoteToken, _from, _to, _amount, _extraData);
}
/// @notice Emits the ERC20BridgeFinalized event and if necessary the appropriate legacy
/// event when an ERC20 bridge is initiated to the other chain.
/// @param _localToken Address of the ERC20 on this chain.
/// @param _remoteToken Address of the ERC20 on the remote chain.
/// @param _from Address of the sender.
/// @param _to Address of the receiver.
/// @param _amount Amount of the ERC20 sent.
/// @param _extraData Extra data sent with the transaction.
function _emitERC20BridgeFinalized(
address _localToken,
address _remoteToken,
address _from,
address _to,
uint256 _amount,
bytes memory _extraData
)
internal
virtual
{
emit ERC20BridgeFinalized(_localToken, _remoteToken, _from, _to, _amount, _extraData);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface ICrossDomainMessenger {
event FailedRelayedMessage(bytes32 indexed msgHash);
event Initialized(uint8 version);
event RelayedMessage(bytes32 indexed msgHash);
event SentMessage(address indexed target, address sender, bytes message, uint256 messageNonce, uint256 gasLimit);
event SentMessageExtension1(address indexed sender, uint256 value);
function MESSAGE_VERSION() external view returns (uint16);
function MIN_GAS_CALLDATA_OVERHEAD() external view returns (uint64);
function MIN_GAS_DYNAMIC_OVERHEAD_DENOMINATOR() external view returns (uint64);
function MIN_GAS_DYNAMIC_OVERHEAD_NUMERATOR() external view returns (uint64);
function OTHER_MESSENGER() external view returns (ICrossDomainMessenger);
function RELAY_CALL_OVERHEAD() external view returns (uint64);
function RELAY_CONSTANT_OVERHEAD() external view returns (uint64);
function RELAY_GAS_CHECK_BUFFER() external view returns (uint64);
function RELAY_RESERVED_GAS() external view returns (uint64);
function baseGas(bytes memory _message, uint32 _minGasLimit) external pure returns (uint64);
function failedMessages(bytes32) external view returns (bool);
function messageNonce() external view returns (uint256);
function otherMessenger() external view returns (ICrossDomainMessenger);
function paused() external view returns (bool);
function relayMessage(
uint256 _nonce,
address _sender,
address _target,
uint256 _value,
uint256 _minGasLimit,
bytes memory _message
)
external
payable;
function sendMessage(address _target, bytes memory _message, uint32 _minGasLimit) external payable;
function successfulMessages(bytes32) external view returns (bool);
function xDomainMessageSender() external view returns (address);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { IERC165 } from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
/// @title IOptimismMintableERC20
/// @notice This interface is available on the OptimismMintableERC20 contract.
/// We declare it as a separate interface so that it can be used in
/// custom implementations of OptimismMintableERC20.
interface IOptimismMintableERC20 is IERC165 {
function remoteToken() external view returns (address);
function bridge() external returns (address);
function mint(address _to, uint256 _amount) external;
function burn(address _from, uint256 _amount) external;
}
/// @custom:legacy
/// @title ILegacyMintableERC20
/// @notice This interface was available on the legacy L2StandardERC20 contract.
/// It remains available on the OptimismMintableERC20 contract for
/// backwards compatibility.
interface ILegacyMintableERC20 is IERC165 {
function l1Token() external view returns (address);
function mint(address _to, uint256 _amount) external;
function burn(address _from, uint256 _amount) external;
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title ISemver
/// @notice ISemver is a simple contract for ensuring that contracts are
/// versioned using semantic versioning.
interface ISemver {
/// @notice Getter for the semantic version of the contract. This is not
/// meant to be used onchain but instead meant to be used by offchain
/// tooling.
/// @return Semver contract version as a string.
function version() external view returns (string memory);
}{
"remappings": [
"@lib-keccak/=lib/lib-keccak/contracts/lib/",
"@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
"@openzeppelin/contracts-v5/=lib/openzeppelin-contracts-v5/contracts/",
"@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
"@rari-capital/solmate/=lib/solmate/",
"@solady-test/=lib/lib-keccak/lib/solady/test/",
"@solady/=lib/solady/src/",
"automate/=lib/automate/contracts/",
"ds-test/=lib/forge-std/lib/ds-test/src/",
"erc4626-tests/=lib/openzeppelin-contracts-v5/lib/erc4626-tests/",
"forge-std/=lib/forge-std/src/",
"gelato/=lib/automate/contracts/",
"hardhat/=lib/automate/node_modules/hardhat/",
"kontrol-cheatcodes/=lib/kontrol-cheatcodes/src/",
"lib-keccak/=lib/lib-keccak/contracts/",
"openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
"openzeppelin-contracts-v5/=lib/openzeppelin-contracts-v5/",
"openzeppelin-contracts/=lib/openzeppelin-contracts/",
"prb-test/=lib/automate/lib/prb-test/src/",
"prb/-est/=lib/automate/lib/prb-test/src/",
"safe-contracts/=lib/safe-contracts/contracts/",
"solady/=lib/solady/",
"solmate/=lib/solmate/src/"
],
"optimizer": {
"enabled": true,
"runs": 999999
},
"metadata": {
"bytecodeHash": "none"
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"abi"
]
}
},
"evmVersion": "london",
"libraries": {}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
API[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"l1Token","type":"address"},{"indexed":true,"internalType":"address","name":"l2Token","type":"address"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"extraData","type":"bytes"}],"name":"DepositFinalized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"localToken","type":"address"},{"indexed":true,"internalType":"address","name":"remoteToken","type":"address"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"extraData","type":"bytes"}],"name":"ERC20BridgeFinalized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"localToken","type":"address"},{"indexed":true,"internalType":"address","name":"remoteToken","type":"address"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"extraData","type":"bytes"}],"name":"ERC20BridgeInitiated","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"},{"indexed":false,"internalType":"bytes","name":"extraData","type":"bytes"}],"name":"ETHBridgeFinalized","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"},{"indexed":false,"internalType":"bytes","name":"extraData","type":"bytes"}],"name":"ETHBridgeInitiated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"l1Token","type":"address"},{"indexed":true,"internalType":"address","name":"l2Token","type":"address"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"extraData","type":"bytes"}],"name":"WithdrawalInitiated","type":"event"},{"inputs":[],"name":"MESSENGER","outputs":[{"internalType":"contract ICrossDomainMessenger","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"OTHER_BRIDGE","outputs":[{"internalType":"contract StandardBridge","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_localToken","type":"address"},{"internalType":"address","name":"_remoteToken","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint32","name":"_minGasLimit","type":"uint32"},{"internalType":"bytes","name":"_extraData","type":"bytes"}],"name":"bridgeERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_localToken","type":"address"},{"internalType":"address","name":"_remoteToken","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint32","name":"_minGasLimit","type":"uint32"},{"internalType":"bytes","name":"_extraData","type":"bytes"}],"name":"bridgeERC20To","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"_minGasLimit","type":"uint32"},{"internalType":"bytes","name":"_extraData","type":"bytes"}],"name":"bridgeETH","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint32","name":"_minGasLimit","type":"uint32"},{"internalType":"bytes","name":"_extraData","type":"bytes"}],"name":"bridgeETHTo","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"deposits","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_localToken","type":"address"},{"internalType":"address","name":"_remoteToken","type":"address"},{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bytes","name":"_extraData","type":"bytes"}],"name":"finalizeBridgeERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bytes","name":"_extraData","type":"bytes"}],"name":"finalizeBridgeETH","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract StandardBridge","name":"_otherBridge","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"l1TokenBridge","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"messenger","outputs":[{"internalType":"contract ICrossDomainMessenger","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"otherBridge","outputs":[{"internalType":"contract StandardBridge","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"_l2Token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint32","name":"_minGasLimit","type":"uint32"},{"internalType":"bytes","name":"_extraData","type":"bytes"}],"name":"withdraw","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_l2Token","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint32","name":"_minGasLimit","type":"uint32"},{"internalType":"bytes","name":"_extraData","type":"bytes"}],"name":"withdrawTo","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]Contract Creation Code
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Swarm Source
none
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0xC0d3c0d3c0D3c0d3C0D3c0D3C0d3C0D3C0D30010
Net Worth in USD
$0.00
Net Worth in ETH
0
Multichain Portfolio | 35 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
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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.