// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())
            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())
            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }
    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);
    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }
    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback () external payable virtual {
        _fallback();
    }
    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive () external payable virtual {
        _fallback();
    }
    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./UpgradeableProxy.sol";
/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 *
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
 * clashing], which can potentially be used in an attack, this contract uses the
 * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
 * things that go hand in hand:
 *
 * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
 * that call matches one of the admin functions exposed by the proxy itself.
 * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
 * implementation. If the admin tries to call a function on the implementation it will fail with an error that says
 * "admin cannot fallback to proxy target".
 *
 * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
 * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
 * to sudden errors when trying to call a function from the proxy implementation.
 *
 * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
 * you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
 */
contract TransparentUpgradeableProxy is UpgradeableProxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
     */
    constructor(address _logic, address admin_, bytes memory _data) public payable UpgradeableProxy(_logic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _setAdmin(admin_);
    }
    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);
    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
    /**
     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
     */
    modifier ifAdmin() {
        if (msg.sender == _admin()) {
            _;
        } else {
            _fallback();
        }
    }
    /**
     * @dev Returns the current admin.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function admin() external ifAdmin returns (address admin_) {
        admin_ = _admin();
    }
    /**
     * @dev Returns the current implementation.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
     */
    function implementation() external ifAdmin returns (address implementation_) {
        implementation_ = _implementation();
    }
    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
     */
    function changeAdmin(address newAdmin) external virtual ifAdmin {
        require(newAdmin != address(0), "TransparentUpgradeableProxy: new admin is the zero address");
        emit AdminChanged(_admin(), newAdmin);
        _setAdmin(newAdmin);
    }
    /**
     * @dev Upgrade the implementation of the proxy.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    function upgradeTo(address newImplementation) external virtual ifAdmin {
        _upgradeTo(newImplementation);
    }
    /**
     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
     * proxied contract.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable virtual ifAdmin {
        _upgradeTo(newImplementation);
        Address.functionDelegateCall(newImplementation, data);
    }
    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view virtual returns (address adm) {
        bytes32 slot = _ADMIN_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            adm := sload(slot)
        }
    }
    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        bytes32 slot = _ADMIN_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newAdmin)
        }
    }
    /**
     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
     */
    function _beforeFallback() internal virtual override {
        require(msg.sender != _admin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
        super._beforeFallback();
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./Proxy.sol";
import "../utils/Address.sol";
/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 *
 * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
 * {TransparentUpgradeableProxy}.
 */
contract UpgradeableProxy is Proxy {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     *
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializating the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) public payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _setImplementation(_logic);
        if(_data.length > 0) {
            Address.functionDelegateCall(_logic, _data);
        }
    }
    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);
    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal view virtual override returns (address impl) {
        bytes32 slot = _IMPLEMENTATION_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            impl := sload(slot)
        }
    }
    /**
     * @dev Upgrades the proxy to a new implementation.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal virtual {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }
    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "UpgradeableProxy: new implementation is not a contract");
        bytes32 slot = _IMPLEMENTATION_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newImplementation)
        }
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.
        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 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");
        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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");
        // solhint-disable-next-line avoid-low-level-calls
        (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");
        // solhint-disable-next-line avoid-low-level-calls
        (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");
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }
    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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
                // solhint-disable-next-line no-inline-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 (proxy/transparent/TransparentUpgradeableProxy.sol)
pragma solidity ^0.8.0;
import "../ERC1967/ERC1967Proxy.sol";
/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 *
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
 * clashing], which can potentially be used in an attack, this contract uses the
 * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
 * things that go hand in hand:
 *
 * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
 * that call matches one of the admin functions exposed by the proxy itself.
 * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
 * implementation. If the admin tries to call a function on the implementation it will fail with an error that says
 * "admin cannot fallback to proxy target".
 *
 * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
 * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
 * to sudden errors when trying to call a function from the proxy implementation.
 *
 * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
 * you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
 */
contract TransparentUpgradeableProxy is ERC1967Proxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {ERC1967Proxy-constructor}.
     */
    constructor(
        address _logic,
        address admin_,
        bytes memory _data
    ) payable ERC1967Proxy(_logic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _changeAdmin(admin_);
    }
    /**
     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
     */
    modifier ifAdmin() {
        if (msg.sender == _getAdmin()) {
            _;
        } else {
            _fallback();
        }
    }
    /**
     * @dev Returns the current admin.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function admin() external ifAdmin returns (address admin_) {
        admin_ = _getAdmin();
    }
    /**
     * @dev Returns the current implementation.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
     */
    function implementation() external ifAdmin returns (address implementation_) {
        implementation_ = _implementation();
    }
    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
     */
    function changeAdmin(address newAdmin) external virtual ifAdmin {
        _changeAdmin(newAdmin);
    }
    /**
     * @dev Upgrade the implementation of the proxy.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    function upgradeTo(address newImplementation) external ifAdmin {
        _upgradeToAndCall(newImplementation, bytes(""), false);
    }
    /**
     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
     * proxied contract.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
        _upgradeToAndCall(newImplementation, data, true);
    }
    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view virtual returns (address) {
        return _getAdmin();
    }
    /**
     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
     */
    function _beforeFallback() internal virtual override {
        require(msg.sender != _getAdmin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
        super._beforeFallback();
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/ERC1967/ERC1967Proxy.sol)
pragma solidity ^0.8.0;
import "../Proxy.sol";
import "./ERC1967Upgrade.sol";
/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 */
contract ERC1967Proxy is Proxy, ERC1967Upgrade {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     *
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializating the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _upgradeToAndCall(_logic, _data, false);
    }
    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal view virtual override returns (address impl) {
        return ERC1967Upgrade._getImplementation();
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/Proxy.sol)
pragma solidity ^0.8.0;
/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())
            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())
            switch result
            // delegatecall returns 0 on error.
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }
    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);
    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }
    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback() external payable virtual {
        _fallback();
    }
    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive() external payable virtual {
        _fallback();
    }
    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/ERC1967/ERC1967Upgrade.sol)
pragma solidity ^0.8.2;
import "../beacon/IBeacon.sol";
import "../../interfaces/draft-IERC1822.sol";
import "../../utils/Address.sol";
import "../../utils/StorageSlot.sol";
/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract ERC1967Upgrade {
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;
    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);
    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }
    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }
    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }
    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(
        address newImplementation,
        bytes memory data,
        bool forceCall
    ) internal {
        _upgradeTo(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }
    }
    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallUUPS(
        address newImplementation,
        bytes memory data,
        bool forceCall
    ) internal {
        // Upgrades from old implementations will perform a rollback test. This test requires the new
        // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
        // this special case will break upgrade paths from old UUPS implementation to new ones.
        if (StorageSlot.getBooleanSlot(_ROLLBACK_SLOT).value) {
            _setImplementation(newImplementation);
        } else {
            try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
                require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
            } catch {
                revert("ERC1967Upgrade: new implementation is not UUPS");
            }
            _upgradeToAndCall(newImplementation, data, forceCall);
        }
    }
    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);
    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
    }
    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }
    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }
    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;
    /**
     * @dev Emitted when the beacon is upgraded.
     */
    event BeaconUpgraded(address indexed beacon);
    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
    }
    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(Address.isContract(newBeacon), "ERC1967: new beacon is not a contract");
        require(
            Address.isContract(IBeacon(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }
    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(
        address newBeacon,
        bytes memory data,
        bool forceCall
    ) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
        }
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)
pragma solidity ^0.8.0;
/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)
pragma solidity ^0.8.0;
/**
 * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
 * proxy whose upgrades are fully controlled by the current implementation.
 */
interface IERC1822Proxiable {
    /**
     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
     * address.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy.
     */
    function proxiableUUID() external view returns (bytes32);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (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
                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/StorageSlot.sol)
pragma solidity ^0.8.0;
/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }
    struct BooleanSlot {
        bool value;
    }
    struct Bytes32Slot {
        bytes32 value;
    }
    struct Uint256Slot {
        uint256 value;
    }
    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        assembly {
            r.slot := slot
        }
    }
    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        assembly {
            r.slot := slot
        }
    }
    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        assembly {
            r.slot := slot
        }
    }
    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        assembly {
            r.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/AddressUpgradeable.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) || (!AddressUpgradeable.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) (security/Pausable.sol)
pragma solidity ^0.8.0;
import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";
/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract PausableUpgradeable is Initializable, ContextUpgradeable {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);
    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);
    bool private _paused;
    /**
     * @dev Initializes the contract in unpaused state.
     */
    function __Pausable_init() internal onlyInitializing {
        __Pausable_init_unchained();
    }
    function __Pausable_init_unchained() internal onlyInitializing {
        _paused = false;
    }
    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }
    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }
    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }
    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }
    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }
    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }
    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}
// 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 AddressUpgradeable {
    /**
     * @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 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;
import "../proxy/utils/Initializable.sol";
/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }
    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/StorageSlot.sol)
pragma solidity ^0.8.0;
/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlotUpgradeable {
    struct AddressSlot {
        address value;
    }
    struct BooleanSlot {
        bool value;
    }
    struct Bytes32Slot {
        bytes32 value;
    }
    struct Uint256Slot {
        uint256 value;
    }
    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }
    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }
    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }
    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.4;
import {
    DataTooLarge,
    GasLimitTooLarge,
    InsufficientValue,
    InsufficientSubmissionCost,
    L1Forked,
    NotAllowedOrigin,
    NotCodelessOrigin,
    NotRollupOrOwner,
    RetryableData
} from "../libraries/Error.sol";
import "./IInboxBase.sol";
import "./ISequencerInbox.sol";
import "./IBridge.sol";
import "../libraries/AddressAliasHelper.sol";
import "../libraries/CallerChecker.sol";
import "../libraries/DelegateCallAware.sol";
import {
    L1MessageType_submitRetryableTx,
    L2MessageType_unsignedContractTx,
    L2MessageType_unsignedEOATx,
    L2_MSG
} from "../libraries/MessageTypes.sol";
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/StorageSlotUpgradeable.sol";
/**
 * @title Inbox for user and contract originated messages
 * @notice Messages created via this inbox are enqueued in the delayed accumulator
 * to await inclusion in the SequencerInbox
 */
abstract contract AbsInbox is DelegateCallAware, PausableUpgradeable, IInboxBase {
    /// @dev Storage slot with the admin of the contract.
    /// This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1.
    bytes32 internal constant _ADMIN_SLOT =
        0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
    /// @inheritdoc IInboxBase
    IBridge public bridge;
    /// @inheritdoc IInboxBase
    ISequencerInbox public sequencerInbox;
    /// ------------------------------------ allow list start ------------------------------------ ///
    /// @inheritdoc IInboxBase
    bool public allowListEnabled;
    /// @inheritdoc IInboxBase
    mapping(address => bool) public isAllowed;
    event AllowListAddressSet(address indexed user, bool val);
    event AllowListEnabledUpdated(bool isEnabled);
    /// @inheritdoc IInboxBase
    function setAllowList(address[] memory user, bool[] memory val) external onlyRollupOrOwner {
        require(user.length == val.length, "INVALID_INPUT");
        for (uint256 i = 0; i < user.length; i++) {
            isAllowed[user[i]] = val[i];
            emit AllowListAddressSet(user[i], val[i]);
        }
    }
    /// @inheritdoc IInboxBase
    function setAllowListEnabled(
        bool _allowListEnabled
    ) external onlyRollupOrOwner {
        require(_allowListEnabled != allowListEnabled, "ALREADY_SET");
        allowListEnabled = _allowListEnabled;
        emit AllowListEnabledUpdated(_allowListEnabled);
    }
    /// @dev this modifier checks the tx.origin instead of msg.sender for convenience (ie it allows
    /// allowed users to interact with the token bridge without needing the token bridge to be allowList aware).
    /// this modifier is not intended to use to be used for security (since this opens the allowList to
    /// a smart contract phishing risk).
    modifier onlyAllowed() {
        // solhint-disable-next-line avoid-tx-origin
        if (allowListEnabled && !isAllowed[tx.origin]) revert NotAllowedOrigin(tx.origin);
        _;
    }
    /// ------------------------------------ allow list end ------------------------------------ ///
    modifier onlyRollupOrOwner() {
        IOwnable rollup = bridge.rollup();
        if (msg.sender != address(rollup)) {
            address rollupOwner = rollup.owner();
            if (msg.sender != rollupOwner) {
                revert NotRollupOrOwner(msg.sender, address(rollup), rollupOwner);
            }
        }
        _;
    }
    // On L1 this should be set to 117964: 90% of Geth's 128KB tx size limit, leaving ~13KB for proving
    uint256 public immutable maxDataSize;
    uint256 internal immutable deployTimeChainId = block.chainid;
    constructor(
        uint256 _maxDataSize
    ) {
        maxDataSize = _maxDataSize;
    }
    function _chainIdChanged() internal view returns (bool) {
        return deployTimeChainId != block.chainid;
    }
    /// @inheritdoc IInboxBase
    function pause() external onlyRollupOrOwner {
        _pause();
    }
    /// @inheritdoc IInboxBase
    function unpause() external onlyRollupOrOwner {
        _unpause();
    }
    /* solhint-disable func-name-mixedcase */
    function __AbsInbox_init(
        IBridge _bridge,
        ISequencerInbox _sequencerInbox
    ) internal onlyInitializing {
        bridge = _bridge;
        sequencerInbox = _sequencerInbox;
        allowListEnabled = false;
        __Pausable_init();
    }
    /// @inheritdoc IInboxBase
    function sendL2MessageFromOrigin(
        bytes calldata messageData
    ) external whenNotPaused onlyAllowed returns (uint256) {
        if (_chainIdChanged()) revert L1Forked();
        if (!CallerChecker.isCallerCodelessOrigin()) revert NotCodelessOrigin();
        if (messageData.length > maxDataSize) revert DataTooLarge(messageData.length, maxDataSize);
        uint256 msgNum = _deliverToBridge(L2_MSG, msg.sender, keccak256(messageData), 0);
        emit InboxMessageDeliveredFromOrigin(msgNum);
        return msgNum;
    }
    /// @inheritdoc IInboxBase
    function sendL2Message(
        bytes calldata messageData
    ) external whenNotPaused onlyAllowed returns (uint256) {
        if (_chainIdChanged()) revert L1Forked();
        return _deliverMessage(L2_MSG, msg.sender, messageData, 0);
    }
    /// @inheritdoc IInboxBase
    function sendUnsignedTransaction(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        uint256 nonce,
        address to,
        uint256 value,
        bytes calldata data
    ) external whenNotPaused onlyAllowed returns (uint256) {
        // arbos will discard unsigned tx with gas limit too large
        if (gasLimit > type(uint64).max) {
            revert GasLimitTooLarge();
        }
        return _deliverMessage(
            L2_MSG,
            msg.sender,
            abi.encodePacked(
                L2MessageType_unsignedEOATx,
                gasLimit,
                maxFeePerGas,
                nonce,
                uint256(uint160(to)),
                value,
                data
            ),
            0
        );
    }
    /// @inheritdoc IInboxBase
    function sendContractTransaction(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        address to,
        uint256 value,
        bytes calldata data
    ) external whenNotPaused onlyAllowed returns (uint256) {
        // arbos will discard unsigned tx with gas limit too large
        if (gasLimit > type(uint64).max) {
            revert GasLimitTooLarge();
        }
        return _deliverMessage(
            L2_MSG,
            msg.sender,
            abi.encodePacked(
                L2MessageType_unsignedContractTx,
                gasLimit,
                maxFeePerGas,
                uint256(uint160(to)),
                value,
                data
            ),
            0
        );
    }
    /// @inheritdoc IInboxBase
    function getProxyAdmin() external view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value;
    }
    function _createRetryableTicket(
        address to,
        uint256 l2CallValue,
        uint256 maxSubmissionCost,
        address excessFeeRefundAddress,
        address callValueRefundAddress,
        uint256 gasLimit,
        uint256 maxFeePerGas,
        uint256 amount,
        bytes calldata data
    ) internal returns (uint256) {
        // Ensure the user's deposit alone will make submission succeed.
        // In case of native token having non-18 decimals: 'amount' is denominated in native token's decimals. All other
        // value params - l2CallValue, maxSubmissionCost and maxFeePerGas are denominated in child chain's native 18 decimals.
        uint256 amountToBeMintedOnL2 = _fromNativeTo18Decimals(amount);
        if (amountToBeMintedOnL2 < (maxSubmissionCost + l2CallValue + gasLimit * maxFeePerGas)) {
            revert InsufficientValue(
                maxSubmissionCost + l2CallValue + gasLimit * maxFeePerGas, amountToBeMintedOnL2
            );
        }
        // if a refund address is a contract, we apply the alias to it
        // so that it can access its funds on the L2
        // since the beneficiary and other refund addresses don't get rewritten by arb-os
        if (AddressUpgradeable.isContract(excessFeeRefundAddress)) {
            excessFeeRefundAddress = AddressAliasHelper.applyL1ToL2Alias(excessFeeRefundAddress);
        }
        if (AddressUpgradeable.isContract(callValueRefundAddress)) {
            // this is the beneficiary. be careful since this is the address that can cancel the retryable in the L2
            callValueRefundAddress = AddressAliasHelper.applyL1ToL2Alias(callValueRefundAddress);
        }
        // gas limit is validated to be within uint64 in unsafeCreateRetryableTicket
        return _unsafeCreateRetryableTicket(
            to,
            l2CallValue,
            maxSubmissionCost,
            excessFeeRefundAddress,
            callValueRefundAddress,
            gasLimit,
            maxFeePerGas,
            amount,
            data
        );
    }
    function _unsafeCreateRetryableTicket(
        address to,
        uint256 l2CallValue,
        uint256 maxSubmissionCost,
        address excessFeeRefundAddress,
        address callValueRefundAddress,
        uint256 gasLimit,
        uint256 maxFeePerGas,
        uint256 amount,
        bytes calldata data
    ) internal returns (uint256) {
        // gas price and limit of 1 should never be a valid input, so instead they are used as
        // magic values to trigger a revert in eth calls that surface data without requiring a tx trace
        if (gasLimit == 1 || maxFeePerGas == 1) {
            revert RetryableData(
                msg.sender,
                to,
                l2CallValue,
                amount,
                maxSubmissionCost,
                excessFeeRefundAddress,
                callValueRefundAddress,
                gasLimit,
                maxFeePerGas,
                data
            );
        }
        // arbos will discard retryable with gas limit too large
        if (gasLimit > type(uint64).max) {
            revert GasLimitTooLarge();
        }
        uint256 submissionFee = calculateRetryableSubmissionFee(data.length, block.basefee);
        if (maxSubmissionCost < submissionFee) {
            revert InsufficientSubmissionCost(submissionFee, maxSubmissionCost);
        }
        return _deliverMessage(
            L1MessageType_submitRetryableTx,
            msg.sender,
            abi.encodePacked(
                uint256(uint160(to)),
                l2CallValue,
                _fromNativeTo18Decimals(amount),
                maxSubmissionCost,
                uint256(uint160(excessFeeRefundAddress)),
                uint256(uint160(callValueRefundAddress)),
                gasLimit,
                maxFeePerGas,
                data.length,
                data
            ),
            amount
        );
    }
    function _deliverMessage(
        uint8 _kind,
        address _sender,
        bytes memory _messageData,
        uint256 amount
    ) internal returns (uint256) {
        if (_messageData.length > maxDataSize) {
            revert DataTooLarge(_messageData.length, maxDataSize);
        }
        uint256 msgNum = _deliverToBridge(_kind, _sender, keccak256(_messageData), amount);
        emit InboxMessageDelivered(msgNum, _messageData);
        return msgNum;
    }
    function _deliverToBridge(
        uint8 kind,
        address sender,
        bytes32 messageDataHash,
        uint256 amount
    ) internal virtual returns (uint256);
    function calculateRetryableSubmissionFee(
        uint256 dataLength,
        uint256 baseFee
    ) public view virtual returns (uint256);
    /// @notice get amount of ETH/token to mint on child chain based on provided value.
    ///         In case of ETH-based rollup this amount will always equal the provided
    ///         value. In case of ERC20-based rollup where native token has number of
    ///         decimals different thatn 18, amount will be re-adjusted to reflect 18
    ///         decimals used for native currency on child chain.
    /// @dev    provided value has to be less than 'type(uint256).max/10**(18-decimalsIn)'
    ///         or otherwise it will overflow.
    function _fromNativeTo18Decimals(
        uint256 value
    ) internal view virtual returns (uint256);
    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[47] private __gap;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
import "./Messages.sol";
pragma solidity >=0.6.9 <0.9.0;
/// @notice Delay buffer and delay threshold settings
/// @param threshold The maximum amount of blocks that a message is expected to be delayed
/// @param max The maximum buffer in blocks
/// @param replenishRateInBasis The amount to replenish the buffer per block in basis points.
struct BufferConfig {
    uint64 threshold;
    uint64 max;
    uint64 replenishRateInBasis;
}
/// @notice The delay buffer data.
/// @param bufferBlocks The buffer in blocks.
/// @param max The maximum buffer in blocks
/// @param threshold The maximum amount of blocks that a message is expected to be delayed
/// @param prevBlockNumber The blocknumber of the last included delay message.
/// @param replenishRateInBasis The amount to replenish the buffer per block in basis points.
/// @param prevSequencedBlockNumber The blocknumber when last included delay message was sequenced.
struct BufferData {
    uint64 bufferBlocks;
    uint64 max;
    uint64 threshold;
    uint64 prevBlockNumber;
    uint64 replenishRateInBasis;
    uint64 prevSequencedBlockNumber;
}
struct DelayProof {
    bytes32 beforeDelayedAcc;
    Messages.Message delayedMessage;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "./IOwnable.sol";
interface IBridge {
    /// @dev This is an instruction to offchain readers to inform them where to look
    ///      for sequencer inbox batch data. This is not the type of data (eg. das, brotli encoded, or blob versioned hash)
    ///      and this enum is not used in the state transition function, rather it informs an offchain
    ///      reader where to find the data so that they can supply it to the replay binary
    enum BatchDataLocation {
        /// @notice The data can be found in the transaction call data
        TxInput,
        /// @notice The data can be found in an event emitted during the transaction
        SeparateBatchEvent,
        /// @notice This batch contains no data
        NoData,
        /// @notice The data can be found in the 4844 data blobs on this transaction
        Blob
    }
    struct TimeBounds {
        uint64 minTimestamp;
        uint64 maxTimestamp;
        uint64 minBlockNumber;
        uint64 maxBlockNumber;
    }
    event MessageDelivered(
        uint256 indexed messageIndex,
        bytes32 indexed beforeInboxAcc,
        address inbox,
        uint8 kind,
        address sender,
        bytes32 messageDataHash,
        uint256 baseFeeL1,
        uint64 timestamp
    );
    event BridgeCallTriggered(
        address indexed outbox, address indexed to, uint256 value, bytes data
    );
    event InboxToggle(address indexed inbox, bool enabled);
    event OutboxToggle(address indexed outbox, bool enabled);
    event SequencerInboxUpdated(address newSequencerInbox);
    event RollupUpdated(address rollup);
    function allowedDelayedInboxList(
        uint256
    ) external returns (address);
    function allowedOutboxList(
        uint256
    ) external returns (address);
    /// @dev Accumulator for delayed inbox messages; tail represents hash of the current state; each element represents the inclusion of a new message.
    function delayedInboxAccs(
        uint256
    ) external view returns (bytes32);
    /// @dev Accumulator for sequencer inbox messages; tail represents hash of the current state; each element represents the inclusion of a new message.
    function sequencerInboxAccs(
        uint256
    ) external view returns (bytes32);
    function rollup() external view returns (IOwnable);
    function sequencerInbox() external view returns (address);
    function activeOutbox() external view returns (address);
    function allowedDelayedInboxes(
        address inbox
    ) external view returns (bool);
    function allowedOutboxes(
        address outbox
    ) external view returns (bool);
    function sequencerReportedSubMessageCount() external view returns (uint256);
    function executeCall(
        address to,
        uint256 value,
        bytes calldata data
    ) external returns (bool success, bytes memory returnData);
    function delayedMessageCount() external view returns (uint256);
    function sequencerMessageCount() external view returns (uint256);
    // ---------- onlySequencerInbox functions ----------
    function enqueueSequencerMessage(
        bytes32 dataHash,
        uint256 afterDelayedMessagesRead,
        uint256 prevMessageCount,
        uint256 newMessageCount
    )
        external
        returns (uint256 seqMessageIndex, bytes32 beforeAcc, bytes32 delayedAcc, bytes32 acc);
    /**
     * @dev Allows the sequencer inbox to submit a delayed message of the batchPostingReport type
     *      This is done through a separate function entrypoint instead of allowing the sequencer inbox
     *      to call `enqueueDelayedMessage` to avoid the gas overhead of an extra SLOAD in either
     *      every delayed inbox or every sequencer inbox call.
     */
    function submitBatchSpendingReport(
        address batchPoster,
        bytes32 dataHash
    ) external returns (uint256 msgNum);
    // ---------- onlyRollupOrOwner functions ----------
    function setSequencerInbox(
        address _sequencerInbox
    ) external;
    function setDelayedInbox(address inbox, bool enabled) external;
    function setOutbox(address inbox, bool enabled) external;
    function updateRollupAddress(
        IOwnable _rollup
    ) external;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
interface IDelayedMessageProvider {
    /// @dev event emitted when a inbox message is added to the Bridge's delayed accumulator
    event InboxMessageDelivered(uint256 indexed messageNum, bytes data);
    /// @dev event emitted when a inbox message is added to the Bridge's delayed accumulator
    /// same as InboxMessageDelivered but the batch data is available in tx.input
    event InboxMessageDeliveredFromOrigin(uint256 indexed messageNum);
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "./IOwnable.sol";
import "./IBridge.sol";
interface IEthBridge is IBridge {
    /**
     * @dev Enqueue a message in the delayed inbox accumulator.
     *      These messages are later sequenced in the SequencerInbox, either
     *      by the sequencer as part of a normal batch, or by force inclusion.
     */
    function enqueueDelayedMessage(
        uint8 kind,
        address sender,
        bytes32 messageDataHash
    ) external payable returns (uint256);
    // ---------- initializer ----------
    function initialize(
        IOwnable rollup_
    ) external;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "./IBridge.sol";
import "./IInboxBase.sol";
interface IInbox is IInboxBase {
    function sendL1FundedUnsignedTransaction(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        uint256 nonce,
        address to,
        bytes calldata data
    ) external payable returns (uint256);
    function sendL1FundedContractTransaction(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        address to,
        bytes calldata data
    ) external payable returns (uint256);
    /**
     * @dev This method can only be called upon L1 fork and will not alias the caller
     *      This method will revert if not called from origin
     */
    function sendL1FundedUnsignedTransactionToFork(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        uint256 nonce,
        address to,
        bytes calldata data
    ) external payable returns (uint256);
    /**
     * @dev This method can only be called upon L1 fork and will not alias the caller
     *      This method will revert if not called from origin
     */
    function sendUnsignedTransactionToFork(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        uint256 nonce,
        address to,
        uint256 value,
        bytes calldata data
    ) external returns (uint256);
    /**
     * @notice Send a message to initiate L2 withdrawal
     * @dev This method can only be called upon L1 fork and will not alias the caller
     *      This method will revert if not called from origin
     */
    function sendWithdrawEthToFork(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        uint256 nonce,
        uint256 value,
        address withdrawTo
    ) external returns (uint256);
    /**
     * @notice Deposit eth from L1 to L2 to address of the sender if sender is an EOA, and to its aliased address if the sender is a contract
     * @dev This does not trigger the fallback function when receiving in the L2 side.
     *      Look into retryable tickets if you are interested in this functionality.
     * @dev This function should not be called inside contract constructors
     */
    function depositEth() external payable returns (uint256);
    /**
     * @notice Put a message in the L2 inbox that can be reexecuted for some fixed amount of time if it reverts
     * @dev all msg.value will deposited to callValueRefundAddress on L2
     * @dev Gas limit and maxFeePerGas should not be set to 1 as that is used to trigger the RetryableData error
     * @param to destination L2 contract address
     * @param l2CallValue call value for retryable L2 message
     * @param maxSubmissionCost Max gas deducted from user's L2 balance to cover base submission fee
     * @param excessFeeRefundAddress the address which receives the difference between execution fee paid and the actual execution cost. In case this address is a contract, funds will be received in its alias on L2.
     * @param callValueRefundAddress l2Callvalue gets credited here on L2 if retryable txn times out or gets cancelled. In case this address is a contract, funds will be received in its alias on L2.
     * @param gasLimit Max gas deducted from user's L2 balance to cover L2 execution. Should not be set to 1 (magic value used to trigger the RetryableData error)
     * @param maxFeePerGas price bid for L2 execution. Should not be set to 1 (magic value used to trigger the RetryableData error)
     * @param data ABI encoded data of L2 message
     * @return unique message number of the retryable transaction
     */
    function createRetryableTicket(
        address to,
        uint256 l2CallValue,
        uint256 maxSubmissionCost,
        address excessFeeRefundAddress,
        address callValueRefundAddress,
        uint256 gasLimit,
        uint256 maxFeePerGas,
        bytes calldata data
    ) external payable returns (uint256);
    /**
     * @notice Put a message in the L2 inbox that can be reexecuted for some fixed amount of time if it reverts
     * @dev Same as createRetryableTicket, but does not guarantee that submission will succeed by requiring the needed funds
     * come from the deposit alone, rather than falling back on the user's L2 balance
     * @dev Advanced usage only (does not rewrite aliases for excessFeeRefundAddress and callValueRefundAddress).
     * createRetryableTicket method is the recommended standard.
     * @dev Gas limit and maxFeePerGas should not be set to 1 as that is used to trigger the RetryableData error
     * @param to destination L2 contract address
     * @param l2CallValue call value for retryable L2 message
     * @param maxSubmissionCost Max gas deducted from user's L2 balance to cover base submission fee
     * @param excessFeeRefundAddress the address which receives the difference between execution fee paid and the actual execution cost
     * @param callValueRefundAddress l2Callvalue gets credited here on L2 if retryable txn times out or gets cancelled
     * @param gasLimit Max gas deducted from user's L2 balance to cover L2 execution. Should not be set to 1 (magic value used to trigger the RetryableData error)
     * @param maxFeePerGas price bid for L2 execution. Should not be set to 1 (magic value used to trigger the RetryableData error)
     * @param data ABI encoded data of L2 message
     * @return unique message number of the retryable transaction
     */
    function unsafeCreateRetryableTicket(
        address to,
        uint256 l2CallValue,
        uint256 maxSubmissionCost,
        address excessFeeRefundAddress,
        address callValueRefundAddress,
        uint256 gasLimit,
        uint256 maxFeePerGas,
        bytes calldata data
    ) external payable returns (uint256);
    // ---------- initializer ----------
    /**
     * @dev function to be called one time during the inbox upgrade process
     *      this is used to fix the storage slots
     */
    function postUpgradeInit(
        IBridge _bridge
    ) external;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "./IBridge.sol";
import "./IDelayedMessageProvider.sol";
import "./ISequencerInbox.sol";
interface IInboxBase is IDelayedMessageProvider {
    function bridge() external view returns (IBridge);
    function sequencerInbox() external view returns (ISequencerInbox);
    function maxDataSize() external view returns (uint256);
    /**
     * @notice Send a generic L2 message to the chain
     * @dev This method is an optimization to avoid having to emit the entirety of the messageData in a log. Instead validators are expected to be able to parse the data from the transaction's input
     * @param messageData Data of the message being sent
     */
    function sendL2MessageFromOrigin(
        bytes calldata messageData
    ) external returns (uint256);
    /**
     * @notice Send a generic L2 message to the chain
     * @dev This method can be used to send any type of message that doesn't require L1 validation
     * @param messageData Data of the message being sent
     */
    function sendL2Message(
        bytes calldata messageData
    ) external returns (uint256);
    function sendUnsignedTransaction(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        uint256 nonce,
        address to,
        uint256 value,
        bytes calldata data
    ) external returns (uint256);
    function sendContractTransaction(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        address to,
        uint256 value,
        bytes calldata data
    ) external returns (uint256);
    /**
     * @notice Get the L1 fee for submitting a retryable
     * @dev This fee can be paid by funds already in the L2 aliased address or by the current message value
     * @dev This formula may change in the future, to future proof your code query this method instead of inlining!!
     * @param dataLength The length of the retryable's calldata, in bytes
     * @param baseFee The block basefee when the retryable is included in the chain, if 0 current block.basefee will be used
     */
    function calculateRetryableSubmissionFee(
        uint256 dataLength,
        uint256 baseFee
    ) external view returns (uint256);
    // ---------- onlyRollupOrOwner functions ----------
    /// @notice pauses all inbox functionality
    function pause() external;
    /// @notice unpauses all inbox functionality
    function unpause() external;
    /// @notice add or remove users from allowList
    function setAllowList(address[] memory user, bool[] memory val) external;
    /// @notice enable or disable allowList
    function setAllowListEnabled(
        bool _allowListEnabled
    ) external;
    /// @notice check if user is in allowList
    function isAllowed(
        address user
    ) external view returns (bool);
    /// @notice check if allowList is enabled
    function allowListEnabled() external view returns (bool);
    function initialize(IBridge _bridge, ISequencerInbox _sequencerInbox) external;
    /// @notice returns the current admin
    function getProxyAdmin() external view returns (address);
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.4;
import {NotOrigin, NotForked, GasLimitTooLarge} from "../libraries/Error.sol";
import "./AbsInbox.sol";
import "./IInbox.sol";
import "./IBridge.sol";
import "./IEthBridge.sol";
import "../libraries/AddressAliasHelper.sol";
import {
    L2_MSG,
    L1MessageType_L2FundedByL1,
    L1MessageType_ethDeposit,
    L2MessageType_unsignedEOATx,
    L2MessageType_unsignedContractTx
} from "../libraries/MessageTypes.sol";
import "../precompiles/ArbSys.sol";
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
/**
 * @title Inbox for user and contract originated messages
 * @notice Messages created via this inbox are enqueued in the delayed accumulator
 * to await inclusion in the SequencerInbox
 */
contract Inbox is AbsInbox, IInbox {
    constructor(
        uint256 _maxDataSize
    ) AbsInbox(_maxDataSize) {}
    /// @inheritdoc IInboxBase
    function initialize(
        IBridge _bridge,
        ISequencerInbox _sequencerInbox
    ) external initializer onlyDelegated {
        __AbsInbox_init(_bridge, _sequencerInbox);
    }
    /// @inheritdoc IInbox
    function postUpgradeInit(
        IBridge
    ) external onlyDelegated onlyProxyOwner {}
    /// @inheritdoc IInbox
    function sendL1FundedUnsignedTransaction(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        uint256 nonce,
        address to,
        bytes calldata data
    ) external payable whenNotPaused onlyAllowed returns (uint256) {
        // arbos will discard unsigned tx with gas limit too large
        if (gasLimit > type(uint64).max) {
            revert GasLimitTooLarge();
        }
        return _deliverMessage(
            L1MessageType_L2FundedByL1,
            msg.sender,
            abi.encodePacked(
                L2MessageType_unsignedEOATx,
                gasLimit,
                maxFeePerGas,
                nonce,
                uint256(uint160(to)),
                msg.value,
                data
            ),
            msg.value
        );
    }
    /// @inheritdoc IInbox
    function sendL1FundedContractTransaction(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        address to,
        bytes calldata data
    ) external payable whenNotPaused onlyAllowed returns (uint256) {
        // arbos will discard unsigned tx with gas limit too large
        if (gasLimit > type(uint64).max) {
            revert GasLimitTooLarge();
        }
        return _deliverMessage(
            L1MessageType_L2FundedByL1,
            msg.sender,
            abi.encodePacked(
                L2MessageType_unsignedContractTx,
                gasLimit,
                maxFeePerGas,
                uint256(uint160(to)),
                msg.value,
                data
            ),
            msg.value
        );
    }
    /// @inheritdoc IInbox
    function sendL1FundedUnsignedTransactionToFork(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        uint256 nonce,
        address to,
        bytes calldata data
    ) external payable whenNotPaused onlyAllowed returns (uint256) {
        if (!_chainIdChanged()) revert NotForked();
        // solhint-disable-next-line avoid-tx-origin
        if (msg.sender != tx.origin) revert NotOrigin();
        // no code size check required because we only want to know if msg.sender is an EOA to undo alias
        // arbos will discard unsigned tx with gas limit too large
        if (gasLimit > type(uint64).max) {
            revert GasLimitTooLarge();
        }
        return _deliverMessage(
            L1MessageType_L2FundedByL1,
            // undoing sender alias here to cancel out the aliasing
            AddressAliasHelper.undoL1ToL2Alias(msg.sender),
            abi.encodePacked(
                L2MessageType_unsignedEOATx,
                gasLimit,
                maxFeePerGas,
                nonce,
                uint256(uint160(to)),
                msg.value,
                data
            ),
            msg.value
        );
    }
    /// @inheritdoc IInbox
    function sendUnsignedTransactionToFork(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        uint256 nonce,
        address to,
        uint256 value,
        bytes calldata data
    ) external whenNotPaused onlyAllowed returns (uint256) {
        if (!_chainIdChanged()) revert NotForked();
        // solhint-disable-next-line avoid-tx-origin
        if (msg.sender != tx.origin) revert NotOrigin();
        // no code size check required because we only want to know if msg.sender is an EOA to undo alias
        // arbos will discard unsigned tx with gas limit too large
        if (gasLimit > type(uint64).max) {
            revert GasLimitTooLarge();
        }
        return _deliverMessage(
            L2_MSG,
            // undoing sender alias here to cancel out the aliasing
            AddressAliasHelper.undoL1ToL2Alias(msg.sender),
            abi.encodePacked(
                L2MessageType_unsignedEOATx,
                gasLimit,
                maxFeePerGas,
                nonce,
                uint256(uint160(to)),
                value,
                data
            ),
            0
        );
    }
    /// @inheritdoc IInbox
    function sendWithdrawEthToFork(
        uint256 gasLimit,
        uint256 maxFeePerGas,
        uint256 nonce,
        uint256 value,
        address withdrawTo
    ) external whenNotPaused onlyAllowed returns (uint256) {
        if (!_chainIdChanged()) revert NotForked();
        // solhint-disable-next-line avoid-tx-origin
        if (msg.sender != tx.origin) revert NotOrigin();
        // no code size check required because we only want to know if msg.sender is an EOA to undo alias
        // arbos will discard unsigned tx with gas limit too large
        if (gasLimit > type(uint64).max) {
            revert GasLimitTooLarge();
        }
        return _deliverMessage(
            L2_MSG,
            // undoing sender alias here to cancel out the aliasing
            AddressAliasHelper.undoL1ToL2Alias(msg.sender),
            abi.encodePacked(
                L2MessageType_unsignedEOATx,
                gasLimit,
                maxFeePerGas,
                nonce,
                uint256(uint160(address(100))), // ArbSys address
                value,
                abi.encodeWithSelector(ArbSys.withdrawEth.selector, withdrawTo)
            ),
            0
        );
    }
    /// @inheritdoc IInbox
    function depositEth() public payable whenNotPaused onlyAllowed returns (uint256) {
        address dest = msg.sender;
        // solhint-disable-next-line avoid-tx-origin
        if (AddressUpgradeable.isContract(msg.sender) || tx.origin != msg.sender) {
            // isContract check fails if this function is called during a contract's constructor.
            dest = AddressAliasHelper.applyL1ToL2Alias(msg.sender);
        }
        return _deliverMessage(
            L1MessageType_ethDeposit, msg.sender, abi.encodePacked(dest, msg.value), msg.value
        );
    }
    /// @notice deprecated in favour of depositEth with no parameters
    function depositEth(
        uint256
    ) external payable whenNotPaused onlyAllowed returns (uint256) {
        return depositEth();
    }
    /**
     * @notice deprecated in favour of unsafeCreateRetryableTicket
     * @dev deprecated in favour of unsafeCreateRetryableTicket
     * @dev Gas limit and maxFeePerGas should not be set to 1 as that is used to trigger the RetryableData error
     * @param to destination L2 contract address
     * @param l2CallValue call value for retryable L2 message
     * @param maxSubmissionCost Max gas deducted from user's L2 balance to cover base submission fee
     * @param excessFeeRefundAddress the address which receives the difference between execution fee paid and the actual execution cost
     * @param callValueRefundAddress l2Callvalue gets credited here on L2 if retryable txn times out or gets cancelled
     * @param gasLimit Max gas deducted from user's L2 balance to cover L2 execution. Should not be set to 1 (magic value used to trigger the RetryableData error)
     * @param maxFeePerGas price bid for L2 execution. Should not be set to 1 (magic value used to trigger the RetryableData error)
     * @param data ABI encoded data of L2 message
     * @return unique message number of the retryable transaction
     */
    function createRetryableTicketNoRefundAliasRewrite(
        address to,
        uint256 l2CallValue,
        uint256 maxSubmissionCost,
        address excessFeeRefundAddress,
        address callValueRefundAddress,
        uint256 gasLimit,
        uint256 maxFeePerGas,
        bytes calldata data
    ) external payable whenNotPaused onlyAllowed returns (uint256) {
        // gas limit is validated to be within uint64 in unsafeCreateRetryableTicket
        return unsafeCreateRetryableTicket(
            to,
            l2CallValue,
            maxSubmissionCost,
            excessFeeRefundAddress,
            callValueRefundAddress,
            gasLimit,
            maxFeePerGas,
            data
        );
    }
    /// @inheritdoc IInbox
    function createRetryableTicket(
        address to,
        uint256 l2CallValue,
        uint256 maxSubmissionCost,
        address excessFeeRefundAddress,
        address callValueRefundAddress,
        uint256 gasLimit,
        uint256 maxFeePerGas,
        bytes calldata data
    ) external payable whenNotPaused onlyAllowed returns (uint256) {
        return _createRetryableTicket(
            to,
            l2CallValue,
            maxSubmissionCost,
            excessFeeRefundAddress,
            callValueRefundAddress,
            gasLimit,
            maxFeePerGas,
            msg.value,
            data
        );
    }
    /// @inheritdoc IInbox
    function unsafeCreateRetryableTicket(
        address to,
        uint256 l2CallValue,
        uint256 maxSubmissionCost,
        address excessFeeRefundAddress,
        address callValueRefundAddress,
        uint256 gasLimit,
        uint256 maxFeePerGas,
        bytes calldata data
    ) public payable whenNotPaused onlyAllowed returns (uint256) {
        return _unsafeCreateRetryableTicket(
            to,
            l2CallValue,
            maxSubmissionCost,
            excessFeeRefundAddress,
            callValueRefundAddress,
            gasLimit,
            maxFeePerGas,
            msg.value,
            data
        );
    }
    /// @inheritdoc IInboxBase
    function calculateRetryableSubmissionFee(
        uint256 dataLength,
        uint256 baseFee
    ) public view override(AbsInbox, IInboxBase) returns (uint256) {
        // Use current block basefee if baseFee parameter is 0
        return (1400 + 6 * dataLength) * (baseFee == 0 ? block.basefee : baseFee);
    }
    function _deliverToBridge(
        uint8 kind,
        address sender,
        bytes32 messageDataHash,
        uint256 amount
    ) internal override returns (uint256) {
        return IEthBridge(address(bridge)).enqueueDelayedMessage{value: amount}(
            kind, AddressAliasHelper.applyL1ToL2Alias(sender), messageDataHash
        );
    }
    /// @inheritdoc AbsInbox
    function _fromNativeTo18Decimals(
        uint256 value
    ) internal pure override returns (uint256) {
        return value;
    }
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.4.21 <0.9.0;
interface IOwnable {
    function owner() external view returns (address);
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
pragma experimental ABIEncoderV2;
import "../libraries/IGasRefunder.sol";
import "./IDelayedMessageProvider.sol";
import "./IBridge.sol";
import "./Messages.sol";
import "./DelayBufferTypes.sol";
interface ISequencerInbox is IDelayedMessageProvider {
    /// @notice The maximum amount of time variatin between a message being posted on the L1 and being executed on the L2
    /// @param delayBlocks The max amount of blocks in the past that a message can be received on L2
    /// @param futureBlocks The max amount of blocks in the future that a message can be received on L2
    /// @param delaySeconds The max amount of seconds in the past that a message can be received on L2
    /// @param futureSeconds The max amount of seconds in the future that a message can be received on L2
    struct MaxTimeVariation {
        uint256 delayBlocks;
        uint256 futureBlocks;
        uint256 delaySeconds;
        uint256 futureSeconds;
    }
    event SequencerBatchDelivered(
        uint256 indexed batchSequenceNumber,
        bytes32 indexed beforeAcc,
        bytes32 indexed afterAcc,
        bytes32 delayedAcc,
        uint256 afterDelayedMessagesRead,
        IBridge.TimeBounds timeBounds,
        IBridge.BatchDataLocation dataLocation
    );
    event OwnerFunctionCalled(uint256 indexed id);
    /// @dev a separate event that emits batch data when this isn't easily accessible in the tx.input
    event SequencerBatchData(uint256 indexed batchSequenceNumber, bytes data);
    /// @dev a valid keyset was added
    event SetValidKeyset(bytes32 indexed keysetHash, bytes keysetBytes);
    /// @dev a keyset was invalidated
    event InvalidateKeyset(bytes32 indexed keysetHash);
    /// @dev Owner set max time variation.
    ///      This event may have been introduced in an upgrade and therefore might not give the full history.
    ///      To get the full history, search for `OwnerFunctionCalled(0)` events.
    event MaxTimeVariationSet(MaxTimeVariation maxTimeVariation);
    /// @dev Owner set a batch poster.
    ///      This event may have been introduced in an upgrade and therefore might not give the full history.
    ///      To get the full history, search for `OwnerFunctionCalled(1)` events.
    event BatchPosterSet(address batchPoster, bool isBatchPoster);
    /// @dev Owner or batch poster manager set a sequencer.
    ///      This event may have been introduced in an upgrade and therefore might not give the full history.
    ///      To get the full history, search for `OwnerFunctionCalled(4)` events.
    event SequencerSet(address addr, bool isSequencer);
    /// @dev Owner set the batch poster manager.
    ///      This event may have been introduced in an upgrade and therefore might not give the full history.
    ///      To get the full history, search for `OwnerFunctionCalled(5)` events.
    event BatchPosterManagerSet(address newBatchPosterManager);
    /// @dev Owner set the buffer config.
    event BufferConfigSet(BufferConfig bufferConfig);
    function totalDelayedMessagesRead() external view returns (uint256);
    function bridge() external view returns (IBridge);
    /// @dev The size of the batch header
    // solhint-disable-next-line func-name-mixedcase
    function HEADER_LENGTH() external view returns (uint256);
    /// @dev If the first batch data byte after the header has this bit set,
    ///      the sequencer inbox has authenticated the data. Currently only used for 4844 blob support.
    ///      See: https://github.com/OffchainLabs/nitro/blob/69de0603abf6f900a4128cab7933df60cad54ded/arbstate/das_reader.go
    // solhint-disable-next-line func-name-mixedcase
    function DATA_AUTHENTICATED_FLAG() external view returns (bytes1);
    /// @dev If the first data byte after the header has this bit set,
    ///      then the batch data is to be found in 4844 data blobs
    ///      See: https://github.com/OffchainLabs/nitro/blob/69de0603abf6f900a4128cab7933df60cad54ded/arbstate/das_reader.go
    // solhint-disable-next-line func-name-mixedcase
    function DATA_BLOB_HEADER_FLAG() external view returns (bytes1);
    /// @dev If the first data byte after the header has this bit set,
    ///      then the batch data is a das message
    ///      See: https://github.com/OffchainLabs/nitro/blob/69de0603abf6f900a4128cab7933df60cad54ded/arbstate/das_reader.go
    // solhint-disable-next-line func-name-mixedcase
    function DAS_MESSAGE_HEADER_FLAG() external view returns (bytes1);
    /// @dev If the first data byte after the header has this bit set,
    ///      then the batch data is a das message that employs a merklesization strategy
    ///      See: https://github.com/OffchainLabs/nitro/blob/69de0603abf6f900a4128cab7933df60cad54ded/arbstate/das_reader.go
    // solhint-disable-next-line func-name-mixedcase
    function TREE_DAS_MESSAGE_HEADER_FLAG() external view returns (bytes1);
    /// @dev If the first data byte after the header has this bit set,
    ///      then the batch data has been brotli compressed
    ///      See: https://github.com/OffchainLabs/nitro/blob/69de0603abf6f900a4128cab7933df60cad54ded/arbstate/das_reader.go
    // solhint-disable-next-line func-name-mixedcase
    function BROTLI_MESSAGE_HEADER_FLAG() external view returns (bytes1);
    /// @dev If the first data byte after the header has this bit set,
    ///      then the batch data uses a zero heavy encoding
    ///      See: https://github.com/OffchainLabs/nitro/blob/69de0603abf6f900a4128cab7933df60cad54ded/arbstate/das_reader.go
    // solhint-disable-next-line func-name-mixedcase
    function ZERO_HEAVY_MESSAGE_HEADER_FLAG() external view returns (bytes1);
    function rollup() external view returns (IOwnable);
    function isBatchPoster(
        address
    ) external view returns (bool);
    function isSequencer(
        address
    ) external view returns (bool);
    /// @notice True is the sequencer inbox is delay bufferable
    function isDelayBufferable() external view returns (bool);
    function maxDataSize() external view returns (uint256);
    /// @notice The batch poster manager has the ability to change the batch poster addresses
    ///         This enables the batch poster to do key rotation
    function batchPosterManager() external view returns (address);
    struct DasKeySetInfo {
        bool isValidKeyset;
        uint64 creationBlock;
    }
    /// @dev returns 4 uint256 to be compatible with older version
    function maxTimeVariation()
        external
        view
        returns (
            uint256 delayBlocks,
            uint256 futureBlocks,
            uint256 delaySeconds,
            uint256 futureSeconds
        );
    function dasKeySetInfo(
        bytes32
    ) external view returns (bool, uint64);
    /// @notice Remove force inclusion delay after a L1 chainId fork
    function removeDelayAfterFork() external;
    /// @notice Force messages from the delayed inbox to be included in the chain
    ///         Callable by any address, but message can only be force-included after maxTimeVariation.delayBlocks
    ///         has elapsed. As part of normal behaviour the sequencer will include these
    ///         messages so it's only necessary to call this if the sequencer is down, or not including any delayed messages.
    /// @param _totalDelayedMessagesRead The total number of messages to read up to
    /// @param kind The kind of the last message to be included
    /// @param l1BlockAndTime The l1 block and the l1 timestamp of the last message to be included
    /// @param baseFeeL1 The l1 gas price of the last message to be included
    /// @param sender The sender of the last message to be included
    /// @param messageDataHash The messageDataHash of the last message to be included
    function forceInclusion(
        uint256 _totalDelayedMessagesRead,
        uint8 kind,
        uint64[2] calldata l1BlockAndTime,
        uint256 baseFeeL1,
        address sender,
        bytes32 messageDataHash
    ) external;
    function inboxAccs(
        uint256 index
    ) external view returns (bytes32);
    function batchCount() external view returns (uint256);
    function isValidKeysetHash(
        bytes32 ksHash
    ) external view returns (bool);
    /// @notice the creation block is intended to still be available after a keyset is deleted
    function getKeysetCreationBlock(
        bytes32 ksHash
    ) external view returns (uint256);
    /// @dev    The delay buffer can change due to pending depletion/replenishment.
    ///         This function applies pending buffer changes to proactively calculate the force inclusion deadline.
    ///         This is only relevant when the buffer is less than the delayBlocks (unhappy case), otherwise force inclusion deadline is fixed at delayBlocks.
    /// @notice Calculates the upper bounds of the delay buffer
    /// @param blockNumber The block number when a delayed message was created
    /// @return blockNumberDeadline The block number at when the message can be force included
    function forceInclusionDeadline(
        uint64 blockNumber
    ) external view returns (uint64 blockNumberDeadline);
    // ---------- BatchPoster functions ----------
    /// @dev Deprecated, kept for abi generation and will be removed in the future
    function addSequencerL2BatchFromOrigin(
        uint256 sequenceNumber,
        bytes calldata data,
        uint256 afterDelayedMessagesRead,
        IGasRefunder gasRefunder
    ) external;
    /// @dev Will be deprecated due to EIP-3074, use `addSequencerL2Batch` instead
    function addSequencerL2BatchFromOrigin(
        uint256 sequenceNumber,
        bytes calldata data,
        uint256 afterDelayedMessagesRead,
        IGasRefunder gasRefunder,
        uint256 prevMessageCount,
        uint256 newMessageCount
    ) external;
    function addSequencerL2Batch(
        uint256 sequenceNumber,
        bytes calldata data,
        uint256 afterDelayedMessagesRead,
        IGasRefunder gasRefunder,
        uint256 prevMessageCount,
        uint256 newMessageCount
    ) external;
    function addSequencerL2BatchFromBlobs(
        uint256 sequenceNumber,
        uint256 afterDelayedMessagesRead,
        IGasRefunder gasRefunder,
        uint256 prevMessageCount,
        uint256 newMessageCount
    ) external;
    /// @dev    Proves message delays, updates delay buffers, and posts an L2 batch with blob data.
    ///         DelayProof proves the delay of the message and syncs the delay buffer.
    function addSequencerL2BatchFromBlobsDelayProof(
        uint256 sequenceNumber,
        uint256 afterDelayedMessagesRead,
        IGasRefunder gasRefunder,
        uint256 prevMessageCount,
        uint256 newMessageCount,
        DelayProof calldata delayProof
    ) external;
    /// @dev    Proves message delays, updates delay buffers, and posts an L2 batch with calldata posted from an EOA.
    ///         DelayProof proves the delay of the message and syncs the delay buffer.
    ///         Will be deprecated due to EIP-3074, use `addSequencerL2BatchDelayProof` instead
    function addSequencerL2BatchFromOriginDelayProof(
        uint256 sequenceNumber,
        bytes calldata data,
        uint256 afterDelayedMessagesRead,
        IGasRefunder gasRefunder,
        uint256 prevMessageCount,
        uint256 newMessageCount,
        DelayProof calldata delayProof
    ) external;
    /// @dev    Proves message delays, updates delay buffers, and posts an L2 batch with calldata.
    ///         delayProof is used to prove the delay of the message and syncs the delay buffer.
    function addSequencerL2BatchDelayProof(
        uint256 sequenceNumber,
        bytes calldata data,
        uint256 afterDelayedMessagesRead,
        IGasRefunder gasRefunder,
        uint256 prevMessageCount,
        uint256 newMessageCount,
        DelayProof calldata delayProof
    ) external;
    // ---------- onlyRollupOrOwner functions ----------
    /**
     * @notice Set max delay for sequencer inbox
     * @param maxTimeVariation_ the maximum time variation parameters
     */
    function setMaxTimeVariation(
        MaxTimeVariation memory maxTimeVariation_
    ) external;
    /**
     * @notice Updates whether an address is authorized to be a batch poster at the sequencer inbox
     * @param addr the address
     * @param isBatchPoster_ if the specified address should be authorized as a batch poster
     */
    function setIsBatchPoster(address addr, bool isBatchPoster_) external;
    /**
     * @notice Makes Data Availability Service keyset valid
     * @param keysetBytes bytes of the serialized keyset
     */
    function setValidKeyset(
        bytes calldata keysetBytes
    ) external;
    /**
     * @notice Invalidates a Data Availability Service keyset
     * @param ksHash hash of the keyset
     */
    function invalidateKeysetHash(
        bytes32 ksHash
    ) external;
    /**
     * @notice Updates whether an address is authorized to be a sequencer.
     * @dev The IsSequencer information is used only off-chain by the nitro node to validate sequencer feed signer.
     * @param addr the address
     * @param isSequencer_ if the specified address should be authorized as a sequencer
     */
    function setIsSequencer(address addr, bool isSequencer_) external;
    /**
     * @notice Updates the batch poster manager, the address which has the ability to rotate batch poster keys
     * @param newBatchPosterManager The new batch poster manager to be set
     */
    function setBatchPosterManager(
        address newBatchPosterManager
    ) external;
    /// @notice Allows the rollup owner to sync the rollup address
    function updateRollupAddress() external;
    // ---------- initializer ----------
    function initialize(
        IBridge bridge_,
        MaxTimeVariation calldata maxTimeVariation_,
        BufferConfig calldata bufferConfig_
    ) external;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
pragma experimental ABIEncoderV2;
library Messages {
    struct Message {
        uint8 kind;
        address sender;
        uint64 blockNumber;
        uint64 timestamp;
        uint256 inboxSeqNum;
        uint256 baseFeeL1;
        bytes32 messageDataHash;
    }
    function messageHash(
        Message memory message
    ) internal pure returns (bytes32) {
        return messageHash(
            message.kind,
            message.sender,
            message.blockNumber,
            message.timestamp,
            message.inboxSeqNum,
            message.baseFeeL1,
            message.messageDataHash
        );
    }
    function messageHash(
        uint8 kind,
        address sender,
        uint64 blockNumber,
        uint64 timestamp,
        uint256 inboxSeqNum,
        uint256 baseFeeL1,
        bytes32 messageDataHash
    ) internal pure returns (bytes32) {
        return keccak256(
            abi.encodePacked(
                kind, sender, blockNumber, timestamp, inboxSeqNum, baseFeeL1, messageDataHash
            )
        );
    }
    function accumulateInboxMessage(
        bytes32 prevAcc,
        bytes32 message
    ) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(prevAcc, message));
    }
    /// @dev   Validates a delayed accumulator preimage
    /// @param delayedAcc The delayed accumulator to validate against
    /// @param beforeDelayedAcc The previous delayed accumulator
    /// @param message The message to validate
    function isValidDelayedAccPreimage(
        bytes32 delayedAcc,
        bytes32 beforeDelayedAcc,
        Message memory message
    ) internal pure returns (bool) {
        return delayedAcc == accumulateInboxMessage(beforeDelayedAcc, messageHash(message));
    }
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
library AddressAliasHelper {
    uint160 internal constant OFFSET = uint160(0x1111000000000000000000000000000000001111);
    /// @notice Utility function that converts the address in the L1 that submitted a tx to
    /// the inbox to the msg.sender viewed in the L2
    /// @param l1Address the address in the L1 that triggered the tx to L2
    /// @return l2Address L2 address as viewed in msg.sender
    function applyL1ToL2Alias(
        address l1Address
    ) internal pure returns (address l2Address) {
        unchecked {
            l2Address = address(uint160(l1Address) + OFFSET);
        }
    }
    /// @notice Utility function that converts the msg.sender viewed in the L2 to the
    /// address in the L1 that submitted a tx to the inbox
    /// @param l2Address L2 address as viewed in msg.sender
    /// @return l1Address the address in the L1 that triggered the tx to L2
    function undoL1ToL2Alias(
        address l2Address
    ) internal pure returns (address l1Address) {
        unchecked {
            l1Address = address(uint160(l2Address) - OFFSET);
        }
    }
}
// Copyright 2021-2024, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
library CallerChecker {
    /**
     * @notice A EIP-7702 safe check to ensure the caller is the origin and is codeless
     * @return bool true if the caller is the origin and is codeless, false otherwise
     * @dev    If the caller is the origin and is codeless, then msg.data is guaranteed to be same as tx.data
     *         It also mean the caller would not be able to call a contract multiple times with the same transaction
     */
    function isCallerCodelessOrigin() internal view returns (bool) {
        // solhint-disable-next-line avoid-tx-origin
        return msg.sender == tx.origin && msg.sender.code.length == 0;
    }
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
import {NotOwner} from "./Error.sol";
/// @dev A stateless contract that allows you to infer if the current call has been delegated or not
/// Pattern used here is from UUPS implementation by the OpenZeppelin team
abstract contract DelegateCallAware {
    address private immutable __self = address(this);
    /**
     * @dev Check that the execution is being performed through a delegate call. This allows a function to be
     * callable on the proxy contract but not on the logic contract.
     */
    modifier onlyDelegated() {
        require(address(this) != __self, "Function must be called through delegatecall");
        _;
    }
    /**
     * @dev Check that the execution is not being performed through a delegate call. This allows a function to be
     * callable on the implementing contract but not through proxies.
     */
    modifier notDelegated() {
        require(address(this) == __self, "Function must not be called through delegatecall");
        _;
    }
    /// @dev Check that msg.sender is the current EIP 1967 proxy admin
    modifier onlyProxyOwner() {
        // Storage slot with the admin of the proxy contract
        // This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1
        bytes32 slot = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
        address admin;
        assembly {
            admin := sload(slot)
        }
        if (msg.sender != admin) revert NotOwner(msg.sender, admin);
        _;
    }
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.4;
/// @dev Init was already called
error AlreadyInit();
/// @dev Init was called with param set to zero that must be nonzero
error HadZeroInit();
/// @dev Thrown when post upgrade init validation fails
error BadPostUpgradeInit();
/// @dev Thrown when the caller is not a codeless origin
error NotCodelessOrigin();
/// @dev Thrown when non owner tries to access an only-owner function
/// @param sender The msg.sender who is not the owner
/// @param owner The owner address
error NotOwner(address sender, address owner);
/// @dev Thrown when an address that is not the rollup tries to call an only-rollup function
/// @param sender The sender who is not the rollup
/// @param rollup The rollup address authorized to call this function
error NotRollup(address sender, address rollup);
/// @dev Thrown when the contract was not called directly from the origin ie msg.sender != tx.origin
error NotOrigin();
/// @dev Provided data was too large
/// @param dataLength The length of the data that is too large
/// @param maxDataLength The max length the data can be
error DataTooLarge(uint256 dataLength, uint256 maxDataLength);
/// @dev The provided is not a contract and was expected to be
/// @param addr The adddress in question
error NotContract(address addr);
/// @dev The merkle proof provided was too long
/// @param actualLength The length of the merkle proof provided
/// @param maxProofLength The max length a merkle proof can have
error MerkleProofTooLong(uint256 actualLength, uint256 maxProofLength);
/// @dev Thrown when an un-authorized address tries to access an admin function
/// @param sender The un-authorized sender
/// @param rollup The rollup, which would be authorized
/// @param owner The rollup's owner, which would be authorized
error NotRollupOrOwner(address sender, address rollup, address owner);
// Bridge Errors
/// @dev Thrown when an un-authorized address tries to access an only-inbox function
/// @param sender The un-authorized sender
error NotDelayedInbox(address sender);
/// @dev Thrown when an un-authorized address tries to access an only-sequencer-inbox function
/// @param sender The un-authorized sender
error NotSequencerInbox(address sender);
/// @dev Thrown when an un-authorized address tries to access an only-outbox function
/// @param sender The un-authorized sender
error NotOutbox(address sender);
/// @dev the provided outbox address isn't valid
/// @param outbox address of outbox being set
error InvalidOutboxSet(address outbox);
/// @dev The provided token address isn't valid
/// @param token address of token being set
error InvalidTokenSet(address token);
/// @dev Call to this specific address is not allowed
/// @param target address of the call receiver
error CallTargetNotAllowed(address target);
/// @dev Call that changes the balance of ERC20Bridge is not allowed
error CallNotAllowed();
// Inbox Errors
/// @dev msg.value sent to the inbox isn't high enough
error InsufficientValue(uint256 expected, uint256 actual);
/// @dev submission cost provided isn't enough to create retryable ticket
error InsufficientSubmissionCost(uint256 expected, uint256 actual);
/// @dev address not allowed to interact with the given contract
error NotAllowedOrigin(address origin);
/// @dev used to convey retryable tx data in eth calls without requiring a tx trace
/// this follows a pattern similar to EIP-3668 where reverts surface call information
error RetryableData(
    address from,
    address to,
    uint256 l2CallValue,
    uint256 deposit,
    uint256 maxSubmissionCost,
    address excessFeeRefundAddress,
    address callValueRefundAddress,
    uint256 gasLimit,
    uint256 maxFeePerGas,
    bytes data
);
/// @dev Thrown when a L1 chainId fork is detected
error L1Forked();
/// @dev Thrown when a L1 chainId fork is not detected
error NotForked();
/// @dev The provided gasLimit is larger than uint64
error GasLimitTooLarge();
/// @dev The provided amount cannot be adjusted to 18 decimals due to overflow
error AmountTooLarge(uint256 amount);
/// @dev Number of native token's decimals is restricted to enable conversions to 18 decimals
error NativeTokenDecimalsTooLarge(uint256 decimals);
// Outbox Errors
/// @dev The provided proof was too long
/// @param proofLength The length of the too-long proof
error ProofTooLong(uint256 proofLength);
/// @dev The output index was greater than the maximum
/// @param index The output index
/// @param maxIndex The max the index could be
error PathNotMinimal(uint256 index, uint256 maxIndex);
/// @dev The calculated root does not exist
/// @param root The calculated root
error UnknownRoot(bytes32 root);
/// @dev The record has already been spent
/// @param index The index of the spent record
error AlreadySpent(uint256 index);
/// @dev A call to the bridge failed with no return data
error BridgeCallFailed();
// Sequencer Inbox Errors
/// @dev Thrown when someone attempts to read fewer messages than have already been read
error DelayedBackwards();
/// @dev Thrown when someone attempts to read more messages than exist
error DelayedTooFar();
/// @dev Force include can only read messages more blocks old than the delay period
error ForceIncludeBlockTooSoon();
/// @dev The message provided did not match the hash in the delayed inbox
error IncorrectMessagePreimage();
/// @dev This can only be called by the batch poster
error NotBatchPoster();
/// @dev The sequence number provided to this message was inconsistent with the number of batches already included
error BadSequencerNumber(uint256 stored, uint256 received);
/// @dev The sequence message number provided to this message was inconsistent with the previous one
error BadSequencerMessageNumber(uint256 stored, uint256 received);
/// @dev Tried to create an already valid Data Availability Service keyset
error AlreadyValidDASKeyset(bytes32);
/// @dev Tried to use or invalidate an already invalid Data Availability Service keyset
error NoSuchKeyset(bytes32);
/// @dev Thrown when the provided address is not the designated batch poster manager
error NotBatchPosterManager(address);
/// @dev Thrown when a data blob feature is attempted to be used on a chain that doesnt support it
error DataBlobsNotSupported();
/// @dev Thrown when batches are posted without buffer proof, this is only allowed in a sync state or when no new delayed messages are read
error DelayProofRequired();
/// @dev The DelayedAccPreimage is invalid
error InvalidDelayedAccPreimage();
/// @dev Thrown when the sequencer attempts to post a batch with delay / sync proofs without delay bufferability enabled
error NotDelayBufferable();
/// @dev Thrown when an init param was supplied as empty
error InitParamZero(string name);
/// @dev Thrown when data hashes where expected but not where present on the tx
error MissingDataHashes();
/// @dev Thrown when rollup is not updated with updateRollupAddress
error RollupNotChanged();
/// @dev Unsupported header flag was provided
error InvalidHeaderFlag(bytes1);
/// @dev SequencerInbox and Bridge are not in the same feeToken/ETH mode
error NativeTokenMismatch();
/// @dev Thrown when a deprecated function is called
error Deprecated();
/// @dev Thrown when any component of maxTimeVariation is over uint64
error BadMaxTimeVariation();
/// @dev Thrown when any component of bufferConfig is zero
error BadBufferConfig();
/// @dev Thrown when extra gas is not a uint64
error ExtraGasNotUint64();
/// @dev Thrown when keysetBytes is too large
error KeysetTooLarge();
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
interface IGasRefunder {
    function onGasSpent(
        address payable spender,
        uint256 gasUsed,
        uint256 calldataSize
    ) external returns (bool success);
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.4;
uint8 constant L2_MSG = 3;
uint8 constant L1MessageType_L2FundedByL1 = 7;
uint8 constant L1MessageType_submitRetryableTx = 9;
uint8 constant L1MessageType_ethDeposit = 12;
uint8 constant L1MessageType_batchPostingReport = 13;
uint8 constant L2MessageType_unsignedEOATx = 0;
uint8 constant L2MessageType_unsignedContractTx = 1;
uint8 constant ROLLUP_PROTOCOL_EVENT_TYPE = 8;
uint8 constant INITIALIZATION_MSG_TYPE = 11;
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.4.21 <0.9.0;
/**
 * @title System level functionality
 * @notice For use by contracts to interact with core L2-specific functionality.
 * Precompiled contract that exists in every Arbitrum chain at address(100), 0x0000000000000000000000000000000000000064.
 */
interface ArbSys {
    /**
     * @notice Get Arbitrum block number (distinct from L1 block number; Arbitrum genesis block has block number 0)
     * @return block number as int
     */
    function arbBlockNumber() external view returns (uint256);
    /**
     * @notice Get Arbitrum block hash (reverts unless currentBlockNum-256 <= arbBlockNum < currentBlockNum)
     * @return block hash
     */
    function arbBlockHash(
        uint256 arbBlockNum
    ) external view returns (bytes32);
    /**
     * @notice Gets the rollup's unique chain identifier
     * @return Chain identifier as int
     */
    function arbChainID() external view returns (uint256);
    /**
     * @notice Get internal version number identifying an ArbOS build, this is `55 + nitroArbOS version number`
     *         e.g. on ArbOS 31 this would return 86. This is the only function that have the 55 offset.
     * @return version number as int
     */
    function arbOSVersion() external view returns (uint256);
    /**
     * @notice Returns 0 since Nitro has no concept of storage gas
     * @return uint 0
     */
    function getStorageGasAvailable() external view returns (uint256);
    /**
     * @notice (deprecated) check if current call is top level (meaning it was triggered by an EoA or a L1 contract)
     * @dev this call has been deprecated and may be removed in a future release
     * @return true if current execution frame is not a call by another L2 contract
     */
    function isTopLevelCall() external view returns (bool);
    /**
     * @notice map L1 sender contract address to its L2 alias
     * @param sender sender address
     * @param unused argument no longer used
     * @return aliased sender address
     */
    function mapL1SenderContractAddressToL2Alias(
        address sender,
        address unused
    ) external pure returns (address);
    /**
     * @notice check if the caller (of this caller of this) is an aliased L1 contract address
     * @return true iff the caller's address is an alias for an L1 contract address
     */
    function wasMyCallersAddressAliased() external view returns (bool);
    /**
     * @notice return the address of the caller (of this caller of this), without applying L1 contract address aliasing
     * @return address of the caller's caller, without applying L1 contract address aliasing
     */
    function myCallersAddressWithoutAliasing() external view returns (address);
    /**
     * @notice Send given amount of Eth to dest from sender.
     * This is a convenience function, which is equivalent to calling sendTxToL1 with empty data.
     * @param destination recipient address on L1
     * @return unique identifier for this L2-to-L1 transaction.
     */
    function withdrawEth(
        address destination
    ) external payable returns (uint256);
    /**
     * @notice Send a transaction to L1
     * @dev it is not possible to execute on the L1 any L2-to-L1 transaction which contains data
     * to a contract address without any code (as enforced by the Bridge contract).
     * @param destination recipient address on L1
     * @param data (optional) calldata for L1 contract call
     * @return a unique identifier for this L2-to-L1 transaction.
     */
    function sendTxToL1(
        address destination,
        bytes calldata data
    ) external payable returns (uint256);
    /**
     * @notice Get send Merkle tree state
     * @return size number of sends in the history
     * @return root root hash of the send history
     * @return partials hashes of partial subtrees in the send history tree
     */
    function sendMerkleTreeState()
        external
        view
        returns (uint256 size, bytes32 root, bytes32[] memory partials);
    /**
     * @notice creates a send txn from L2 to L1
     * @param position = (level << 192) + leaf = (0 << 192) + leaf = leaf
     */
    event L2ToL1Tx(
        address caller,
        address indexed destination,
        uint256 indexed hash,
        uint256 indexed position,
        uint256 arbBlockNum,
        uint256 ethBlockNum,
        uint256 timestamp,
        uint256 callvalue,
        bytes data
    );
    /// @dev DEPRECATED in favour of the new L2ToL1Tx event above after the nitro upgrade
    event L2ToL1Transaction(
        address caller,
        address indexed destination,
        uint256 indexed uniqueId,
        uint256 indexed batchNumber,
        uint256 indexInBatch,
        uint256 arbBlockNum,
        uint256 ethBlockNum,
        uint256 timestamp,
        uint256 callvalue,
        bytes data
    );
    /**
     * @notice logs a merkle branch for proof synthesis
     * @param reserved an index meant only to align the 4th index with L2ToL1Transaction's 4th event
     * @param hash the merkle hash
     * @param position = (level << 192) + leaf
     */
    event SendMerkleUpdate(
        uint256 indexed reserved, bytes32 indexed hash, uint256 indexed position
    );
    error InvalidBlockNumber(uint256 requested, uint256 current);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/AddressUpgradeable.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) || (!AddressUpgradeable.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) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @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 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);
            }
        }
    }
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.4;
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
import {
    NotContract,
    NotRollupOrOwner,
    NotDelayedInbox,
    NotSequencerInbox,
    NotOutbox,
    InvalidOutboxSet,
    BadSequencerMessageNumber
} from "../libraries/Error.sol";
import "./IBridge.sol";
import "./Messages.sol";
import "../libraries/DelegateCallAware.sol";
import {L1MessageType_batchPostingReport} from "../libraries/MessageTypes.sol";
/**
 * @title Staging ground for incoming and outgoing messages
 * @notice Holds the inbox accumulator for sequenced and delayed messages.
 * Since the escrow is held here, this contract also contains a list of allowed
 * outboxes that can make calls from here and withdraw this escrow.
 */
abstract contract AbsBridge is Initializable, DelegateCallAware, IBridge {
    using AddressUpgradeable for address;
    struct InOutInfo {
        uint256 index;
        bool allowed;
    }
    mapping(address => InOutInfo) private allowedDelayedInboxesMap;
    mapping(address => InOutInfo) private allowedOutboxesMap;
    address[] public allowedDelayedInboxList;
    address[] public allowedOutboxList;
    address internal _activeOutbox;
    /// @inheritdoc IBridge
    bytes32[] public delayedInboxAccs;
    /// @inheritdoc IBridge
    bytes32[] public sequencerInboxAccs;
    IOwnable public rollup;
    address public sequencerInbox;
    uint256 public override sequencerReportedSubMessageCount;
    address internal constant EMPTY_ACTIVEOUTBOX = address(type(uint160).max);
    modifier onlyRollupOrOwner() {
        if (msg.sender != address(rollup)) {
            address rollupOwner = rollup.owner();
            if (msg.sender != rollupOwner) {
                revert NotRollupOrOwner(msg.sender, address(rollup), rollupOwner);
            }
        }
        _;
    }
    /// @notice Allows the rollup owner to set another rollup address
    function updateRollupAddress(
        IOwnable _rollup
    ) external onlyRollupOrOwner {
        rollup = _rollup;
        emit RollupUpdated(address(_rollup));
    }
    /// @dev returns the address of current active Outbox, or zero if no outbox is active
    function activeOutbox() public view returns (address) {
        address outbox = _activeOutbox;
        // address zero is returned if no outbox is set, but the value used in storage
        // is non-zero to save users some gas (as storage refunds are usually maxed out)
        // EIP-1153 would help here.
        // we don't return `EMPTY_ACTIVEOUTBOX` to avoid a breaking change on the current api
        if (outbox == EMPTY_ACTIVEOUTBOX) return address(0);
        return outbox;
    }
    function allowedDelayedInboxes(
        address inbox
    ) public view returns (bool) {
        return allowedDelayedInboxesMap[inbox].allowed;
    }
    function allowedOutboxes(
        address outbox
    ) public view returns (bool) {
        return allowedOutboxesMap[outbox].allowed;
    }
    modifier onlySequencerInbox() {
        if (msg.sender != sequencerInbox) revert NotSequencerInbox(msg.sender);
        _;
    }
    function enqueueSequencerMessage(
        bytes32 dataHash,
        uint256 afterDelayedMessagesRead,
        uint256 prevMessageCount,
        uint256 newMessageCount
    )
        external
        onlySequencerInbox
        returns (uint256 seqMessageIndex, bytes32 beforeAcc, bytes32 delayedAcc, bytes32 acc)
    {
        if (
            sequencerReportedSubMessageCount != prevMessageCount && prevMessageCount != 0
                && sequencerReportedSubMessageCount != 0
        ) {
            revert BadSequencerMessageNumber(sequencerReportedSubMessageCount, prevMessageCount);
        }
        sequencerReportedSubMessageCount = newMessageCount;
        seqMessageIndex = sequencerInboxAccs.length;
        if (seqMessageIndex > 0) {
            beforeAcc = sequencerInboxAccs[seqMessageIndex - 1];
        }
        if (afterDelayedMessagesRead > 0) {
            delayedAcc = delayedInboxAccs[afterDelayedMessagesRead - 1];
        }
        acc = keccak256(abi.encodePacked(beforeAcc, dataHash, delayedAcc));
        sequencerInboxAccs.push(acc);
    }
    /// @inheritdoc IBridge
    function submitBatchSpendingReport(
        address sender,
        bytes32 messageDataHash
    ) external onlySequencerInbox returns (uint256) {
        return addMessageToDelayedAccumulator(
            L1MessageType_batchPostingReport,
            sender,
            uint64(block.number),
            uint64(block.timestamp), // solhint-disable-line not-rely-on-time,
            block.basefee,
            messageDataHash
        );
    }
    function _enqueueDelayedMessage(
        uint8 kind,
        address sender,
        bytes32 messageDataHash,
        uint256 amount
    ) internal returns (uint256) {
        if (!allowedDelayedInboxes(msg.sender)) revert NotDelayedInbox(msg.sender);
        uint256 messageCount = addMessageToDelayedAccumulator(
            kind,
            sender,
            uint64(block.number),
            uint64(block.timestamp), // solhint-disable-line not-rely-on-time
            _baseFeeToReport(),
            messageDataHash
        );
        _transferFunds(amount);
        return messageCount;
    }
    function addMessageToDelayedAccumulator(
        uint8 kind,
        address sender,
        uint64 blockNumber,
        uint64 blockTimestamp,
        uint256 baseFeeL1,
        bytes32 messageDataHash
    ) internal returns (uint256) {
        uint256 count = delayedInboxAccs.length;
        bytes32 messageHash = Messages.messageHash(
            kind, sender, blockNumber, blockTimestamp, count, baseFeeL1, messageDataHash
        );
        bytes32 prevAcc = 0;
        if (count > 0) {
            prevAcc = delayedInboxAccs[count - 1];
        }
        delayedInboxAccs.push(Messages.accumulateInboxMessage(prevAcc, messageHash));
        emit MessageDelivered(
            count, prevAcc, msg.sender, kind, sender, messageDataHash, baseFeeL1, blockTimestamp
        );
        return count;
    }
    /// @inheritdoc IBridge
    function executeCall(
        address to,
        uint256 value,
        bytes calldata data
    ) external returns (bool success, bytes memory returnData) {
        if (!allowedOutboxes(msg.sender)) revert NotOutbox(msg.sender);
        if (data.length > 0 && !to.isContract()) revert NotContract(to);
        address prevOutbox = _activeOutbox;
        _activeOutbox = msg.sender;
        // We set and reset active outbox around external call so activeOutbox remains valid during call
        // We use a low level call here since we want to bubble up whether it succeeded or failed to the caller
        // rather than reverting on failure as well as allow contract and non-contract calls
        (success, returnData) = _executeLowLevelCall(to, value, data);
        _activeOutbox = prevOutbox;
        emit BridgeCallTriggered(msg.sender, to, value, data);
    }
    function setSequencerInbox(
        address _sequencerInbox
    ) external onlyRollupOrOwner {
        sequencerInbox = _sequencerInbox;
        emit SequencerInboxUpdated(_sequencerInbox);
    }
    function setDelayedInbox(address inbox, bool enabled) external onlyRollupOrOwner {
        InOutInfo storage info = allowedDelayedInboxesMap[inbox];
        bool alreadyEnabled = info.allowed;
        emit InboxToggle(inbox, enabled);
        if (alreadyEnabled == enabled) {
            return;
        }
        if (enabled) {
            allowedDelayedInboxesMap[inbox] = InOutInfo(allowedDelayedInboxList.length, true);
            allowedDelayedInboxList.push(inbox);
        } else {
            allowedDelayedInboxList[info.index] =
                allowedDelayedInboxList[allowedDelayedInboxList.length - 1];
            allowedDelayedInboxesMap[allowedDelayedInboxList[info.index]].index = info.index;
            allowedDelayedInboxList.pop();
            delete allowedDelayedInboxesMap[inbox];
        }
    }
    function setOutbox(address outbox, bool enabled) external onlyRollupOrOwner {
        if (outbox == EMPTY_ACTIVEOUTBOX) revert InvalidOutboxSet(outbox);
        InOutInfo storage info = allowedOutboxesMap[outbox];
        bool alreadyEnabled = info.allowed;
        emit OutboxToggle(outbox, enabled);
        if (alreadyEnabled == enabled) {
            return;
        }
        if (enabled) {
            allowedOutboxesMap[outbox] = InOutInfo(allowedOutboxList.length, true);
            allowedOutboxList.push(outbox);
        } else {
            allowedOutboxList[info.index] = allowedOutboxList[allowedOutboxList.length - 1];
            allowedOutboxesMap[allowedOutboxList[info.index]].index = info.index;
            allowedOutboxList.pop();
            delete allowedOutboxesMap[outbox];
        }
    }
    function setSequencerReportedSubMessageCount(
        uint256 newMsgCount
    ) external onlyRollupOrOwner {
        sequencerReportedSubMessageCount = newMsgCount;
    }
    function delayedMessageCount() external view override returns (uint256) {
        return delayedInboxAccs.length;
    }
    function sequencerMessageCount() external view returns (uint256) {
        return sequencerInboxAccs.length;
    }
    /// @dev For the classic -> nitro migration. TODO: remove post-migration.
    function acceptFundsFromOldBridge() external payable {}
    /// @dev transfer funds provided to pay for crosschain msg
    function _transferFunds(
        uint256 amount
    ) internal virtual;
    function _executeLowLevelCall(
        address to,
        uint256 value,
        bytes memory data
    ) internal virtual returns (bool success, bytes memory returnData);
    /// @dev get base fee which is emitted in `MessageDelivered` event and then picked up and
    /// used in ArbOs to calculate the submission fee for retryable ticket
    function _baseFeeToReport() internal view virtual returns (uint256);
    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[40] private __gap;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.4;
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
import "./AbsBridge.sol";
import "./IEthBridge.sol";
import "./Messages.sol";
import "../libraries/DelegateCallAware.sol";
/**
 * @title Staging ground for incoming and outgoing messages
 * @notice It is also the ETH escrow for value sent with these messages.
 */
contract Bridge is AbsBridge, IEthBridge {
    using AddressUpgradeable for address;
    /// @inheritdoc IEthBridge
    function initialize(
        IOwnable rollup_
    ) external initializer onlyDelegated {
        _activeOutbox = EMPTY_ACTIVEOUTBOX;
        rollup = rollup_;
    }
    /// @inheritdoc IEthBridge
    function enqueueDelayedMessage(
        uint8 kind,
        address sender,
        bytes32 messageDataHash
    ) external payable returns (uint256) {
        return _enqueueDelayedMessage(kind, sender, messageDataHash, msg.value);
    }
    function _transferFunds(
        uint256
    ) internal override {
        // do nothing as Eth transfer is part of TX execution
    }
    function _executeLowLevelCall(
        address to,
        uint256 value,
        bytes memory data
    ) internal override returns (bool success, bytes memory returnData) {
        // solhint-disable-next-line avoid-low-level-calls
        (success, returnData) = to.call{value: value}(data);
    }
    function _baseFeeToReport() internal view override returns (uint256) {
        return block.basefee;
    }
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "./IOwnable.sol";
interface IBridge {
    /// @dev This is an instruction to offchain readers to inform them where to look
    ///      for sequencer inbox batch data. This is not the type of data (eg. das, brotli encoded, or blob versioned hash)
    ///      and this enum is not used in the state transition function, rather it informs an offchain
    ///      reader where to find the data so that they can supply it to the replay binary
    enum BatchDataLocation {
        /// @notice The data can be found in the transaction call data
        TxInput,
        /// @notice The data can be found in an event emitted during the transaction
        SeparateBatchEvent,
        /// @notice This batch contains no data
        NoData,
        /// @notice The data can be found in the 4844 data blobs on this transaction
        Blob
    }
    struct TimeBounds {
        uint64 minTimestamp;
        uint64 maxTimestamp;
        uint64 minBlockNumber;
        uint64 maxBlockNumber;
    }
    event MessageDelivered(
        uint256 indexed messageIndex,
        bytes32 indexed beforeInboxAcc,
        address inbox,
        uint8 kind,
        address sender,
        bytes32 messageDataHash,
        uint256 baseFeeL1,
        uint64 timestamp
    );
    event BridgeCallTriggered(
        address indexed outbox, address indexed to, uint256 value, bytes data
    );
    event InboxToggle(address indexed inbox, bool enabled);
    event OutboxToggle(address indexed outbox, bool enabled);
    event SequencerInboxUpdated(address newSequencerInbox);
    event RollupUpdated(address rollup);
    function allowedDelayedInboxList(
        uint256
    ) external returns (address);
    function allowedOutboxList(
        uint256
    ) external returns (address);
    /// @dev Accumulator for delayed inbox messages; tail represents hash of the current state; each element represents the inclusion of a new message.
    function delayedInboxAccs(
        uint256
    ) external view returns (bytes32);
    /// @dev Accumulator for sequencer inbox messages; tail represents hash of the current state; each element represents the inclusion of a new message.
    function sequencerInboxAccs(
        uint256
    ) external view returns (bytes32);
    function rollup() external view returns (IOwnable);
    function sequencerInbox() external view returns (address);
    function activeOutbox() external view returns (address);
    function allowedDelayedInboxes(
        address inbox
    ) external view returns (bool);
    function allowedOutboxes(
        address outbox
    ) external view returns (bool);
    function sequencerReportedSubMessageCount() external view returns (uint256);
    function executeCall(
        address to,
        uint256 value,
        bytes calldata data
    ) external returns (bool success, bytes memory returnData);
    function delayedMessageCount() external view returns (uint256);
    function sequencerMessageCount() external view returns (uint256);
    // ---------- onlySequencerInbox functions ----------
    function enqueueSequencerMessage(
        bytes32 dataHash,
        uint256 afterDelayedMessagesRead,
        uint256 prevMessageCount,
        uint256 newMessageCount
    )
        external
        returns (uint256 seqMessageIndex, bytes32 beforeAcc, bytes32 delayedAcc, bytes32 acc);
    /**
     * @dev Allows the sequencer inbox to submit a delayed message of the batchPostingReport type
     *      This is done through a separate function entrypoint instead of allowing the sequencer inbox
     *      to call `enqueueDelayedMessage` to avoid the gas overhead of an extra SLOAD in either
     *      every delayed inbox or every sequencer inbox call.
     */
    function submitBatchSpendingReport(
        address batchPoster,
        bytes32 dataHash
    ) external returns (uint256 msgNum);
    // ---------- onlyRollupOrOwner functions ----------
    function setSequencerInbox(
        address _sequencerInbox
    ) external;
    function setDelayedInbox(address inbox, bool enabled) external;
    function setOutbox(address inbox, bool enabled) external;
    function updateRollupAddress(
        IOwnable _rollup
    ) external;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "./IOwnable.sol";
import "./IBridge.sol";
interface IEthBridge is IBridge {
    /**
     * @dev Enqueue a message in the delayed inbox accumulator.
     *      These messages are later sequenced in the SequencerInbox, either
     *      by the sequencer as part of a normal batch, or by force inclusion.
     */
    function enqueueDelayedMessage(
        uint8 kind,
        address sender,
        bytes32 messageDataHash
    ) external payable returns (uint256);
    // ---------- initializer ----------
    function initialize(
        IOwnable rollup_
    ) external;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.4.21 <0.9.0;
interface IOwnable {
    function owner() external view returns (address);
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
pragma experimental ABIEncoderV2;
library Messages {
    struct Message {
        uint8 kind;
        address sender;
        uint64 blockNumber;
        uint64 timestamp;
        uint256 inboxSeqNum;
        uint256 baseFeeL1;
        bytes32 messageDataHash;
    }
    function messageHash(
        Message memory message
    ) internal pure returns (bytes32) {
        return messageHash(
            message.kind,
            message.sender,
            message.blockNumber,
            message.timestamp,
            message.inboxSeqNum,
            message.baseFeeL1,
            message.messageDataHash
        );
    }
    function messageHash(
        uint8 kind,
        address sender,
        uint64 blockNumber,
        uint64 timestamp,
        uint256 inboxSeqNum,
        uint256 baseFeeL1,
        bytes32 messageDataHash
    ) internal pure returns (bytes32) {
        return keccak256(
            abi.encodePacked(
                kind, sender, blockNumber, timestamp, inboxSeqNum, baseFeeL1, messageDataHash
            )
        );
    }
    function accumulateInboxMessage(
        bytes32 prevAcc,
        bytes32 message
    ) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(prevAcc, message));
    }
    /// @dev   Validates a delayed accumulator preimage
    /// @param delayedAcc The delayed accumulator to validate against
    /// @param beforeDelayedAcc The previous delayed accumulator
    /// @param message The message to validate
    function isValidDelayedAccPreimage(
        bytes32 delayedAcc,
        bytes32 beforeDelayedAcc,
        Message memory message
    ) internal pure returns (bool) {
        return delayedAcc == accumulateInboxMessage(beforeDelayedAcc, messageHash(message));
    }
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
import {NotOwner} from "./Error.sol";
/// @dev A stateless contract that allows you to infer if the current call has been delegated or not
/// Pattern used here is from UUPS implementation by the OpenZeppelin team
abstract contract DelegateCallAware {
    address private immutable __self = address(this);
    /**
     * @dev Check that the execution is being performed through a delegate call. This allows a function to be
     * callable on the proxy contract but not on the logic contract.
     */
    modifier onlyDelegated() {
        require(address(this) != __self, "Function must be called through delegatecall");
        _;
    }
    /**
     * @dev Check that the execution is not being performed through a delegate call. This allows a function to be
     * callable on the implementing contract but not through proxies.
     */
    modifier notDelegated() {
        require(address(this) == __self, "Function must not be called through delegatecall");
        _;
    }
    /// @dev Check that msg.sender is the current EIP 1967 proxy admin
    modifier onlyProxyOwner() {
        // Storage slot with the admin of the proxy contract
        // This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1
        bytes32 slot = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
        address admin;
        assembly {
            admin := sload(slot)
        }
        if (msg.sender != admin) revert NotOwner(msg.sender, admin);
        _;
    }
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.4;
/// @dev Init was already called
error AlreadyInit();
/// @dev Init was called with param set to zero that must be nonzero
error HadZeroInit();
/// @dev Thrown when post upgrade init validation fails
error BadPostUpgradeInit();
/// @dev Thrown when the caller is not a codeless origin
error NotCodelessOrigin();
/// @dev Thrown when non owner tries to access an only-owner function
/// @param sender The msg.sender who is not the owner
/// @param owner The owner address
error NotOwner(address sender, address owner);
/// @dev Thrown when an address that is not the rollup tries to call an only-rollup function
/// @param sender The sender who is not the rollup
/// @param rollup The rollup address authorized to call this function
error NotRollup(address sender, address rollup);
/// @dev Thrown when the contract was not called directly from the origin ie msg.sender != tx.origin
error NotOrigin();
/// @dev Provided data was too large
/// @param dataLength The length of the data that is too large
/// @param maxDataLength The max length the data can be
error DataTooLarge(uint256 dataLength, uint256 maxDataLength);
/// @dev The provided is not a contract and was expected to be
/// @param addr The adddress in question
error NotContract(address addr);
/// @dev The merkle proof provided was too long
/// @param actualLength The length of the merkle proof provided
/// @param maxProofLength The max length a merkle proof can have
error MerkleProofTooLong(uint256 actualLength, uint256 maxProofLength);
/// @dev Thrown when an un-authorized address tries to access an admin function
/// @param sender The un-authorized sender
/// @param rollup The rollup, which would be authorized
/// @param owner The rollup's owner, which would be authorized
error NotRollupOrOwner(address sender, address rollup, address owner);
// Bridge Errors
/// @dev Thrown when an un-authorized address tries to access an only-inbox function
/// @param sender The un-authorized sender
error NotDelayedInbox(address sender);
/// @dev Thrown when an un-authorized address tries to access an only-sequencer-inbox function
/// @param sender The un-authorized sender
error NotSequencerInbox(address sender);
/// @dev Thrown when an un-authorized address tries to access an only-outbox function
/// @param sender The un-authorized sender
error NotOutbox(address sender);
/// @dev the provided outbox address isn't valid
/// @param outbox address of outbox being set
error InvalidOutboxSet(address outbox);
/// @dev The provided token address isn't valid
/// @param token address of token being set
error InvalidTokenSet(address token);
/// @dev Call to this specific address is not allowed
/// @param target address of the call receiver
error CallTargetNotAllowed(address target);
/// @dev Call that changes the balance of ERC20Bridge is not allowed
error CallNotAllowed();
// Inbox Errors
/// @dev msg.value sent to the inbox isn't high enough
error InsufficientValue(uint256 expected, uint256 actual);
/// @dev submission cost provided isn't enough to create retryable ticket
error InsufficientSubmissionCost(uint256 expected, uint256 actual);
/// @dev address not allowed to interact with the given contract
error NotAllowedOrigin(address origin);
/// @dev used to convey retryable tx data in eth calls without requiring a tx trace
/// this follows a pattern similar to EIP-3668 where reverts surface call information
error RetryableData(
    address from,
    address to,
    uint256 l2CallValue,
    uint256 deposit,
    uint256 maxSubmissionCost,
    address excessFeeRefundAddress,
    address callValueRefundAddress,
    uint256 gasLimit,
    uint256 maxFeePerGas,
    bytes data
);
/// @dev Thrown when a L1 chainId fork is detected
error L1Forked();
/// @dev Thrown when a L1 chainId fork is not detected
error NotForked();
/// @dev The provided gasLimit is larger than uint64
error GasLimitTooLarge();
/// @dev The provided amount cannot be adjusted to 18 decimals due to overflow
error AmountTooLarge(uint256 amount);
/// @dev Number of native token's decimals is restricted to enable conversions to 18 decimals
error NativeTokenDecimalsTooLarge(uint256 decimals);
// Outbox Errors
/// @dev The provided proof was too long
/// @param proofLength The length of the too-long proof
error ProofTooLong(uint256 proofLength);
/// @dev The output index was greater than the maximum
/// @param index The output index
/// @param maxIndex The max the index could be
error PathNotMinimal(uint256 index, uint256 maxIndex);
/// @dev The calculated root does not exist
/// @param root The calculated root
error UnknownRoot(bytes32 root);
/// @dev The record has already been spent
/// @param index The index of the spent record
error AlreadySpent(uint256 index);
/// @dev A call to the bridge failed with no return data
error BridgeCallFailed();
// Sequencer Inbox Errors
/// @dev Thrown when someone attempts to read fewer messages than have already been read
error DelayedBackwards();
/// @dev Thrown when someone attempts to read more messages than exist
error DelayedTooFar();
/// @dev Force include can only read messages more blocks old than the delay period
error ForceIncludeBlockTooSoon();
/// @dev The message provided did not match the hash in the delayed inbox
error IncorrectMessagePreimage();
/// @dev This can only be called by the batch poster
error NotBatchPoster();
/// @dev The sequence number provided to this message was inconsistent with the number of batches already included
error BadSequencerNumber(uint256 stored, uint256 received);
/// @dev The sequence message number provided to this message was inconsistent with the previous one
error BadSequencerMessageNumber(uint256 stored, uint256 received);
/// @dev Tried to create an already valid Data Availability Service keyset
error AlreadyValidDASKeyset(bytes32);
/// @dev Tried to use or invalidate an already invalid Data Availability Service keyset
error NoSuchKeyset(bytes32);
/// @dev Thrown when the provided address is not the designated batch poster manager
error NotBatchPosterManager(address);
/// @dev Thrown when a data blob feature is attempted to be used on a chain that doesnt support it
error DataBlobsNotSupported();
/// @dev Thrown when batches are posted without buffer proof, this is only allowed in a sync state or when no new delayed messages are read
error DelayProofRequired();
/// @dev The DelayedAccPreimage is invalid
error InvalidDelayedAccPreimage();
/// @dev Thrown when the sequencer attempts to post a batch with delay / sync proofs without delay bufferability enabled
error NotDelayBufferable();
/// @dev Thrown when an init param was supplied as empty
error InitParamZero(string name);
/// @dev Thrown when data hashes where expected but not where present on the tx
error MissingDataHashes();
/// @dev Thrown when rollup is not updated with updateRollupAddress
error RollupNotChanged();
/// @dev Unsupported header flag was provided
error InvalidHeaderFlag(bytes1);
/// @dev SequencerInbox and Bridge are not in the same feeToken/ETH mode
error NativeTokenMismatch();
/// @dev Thrown when a deprecated function is called
error Deprecated();
/// @dev Thrown when any component of maxTimeVariation is over uint64
error BadMaxTimeVariation();
/// @dev Thrown when any component of bufferConfig is zero
error BadBufferConfig();
/// @dev Thrown when extra gas is not a uint64
error ExtraGasNotUint64();
/// @dev Thrown when keysetBytes is too large
error KeysetTooLarge();
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.4;
uint8 constant L2_MSG = 3;
uint8 constant L1MessageType_L2FundedByL1 = 7;
uint8 constant L1MessageType_submitRetryableTx = 9;
uint8 constant L1MessageType_ethDeposit = 12;
uint8 constant L1MessageType_batchPostingReport = 13;
uint8 constant L2MessageType_unsignedEOATx = 0;
uint8 constant L2MessageType_unsignedContractTx = 1;
uint8 constant ROLLUP_PROTOCOL_EVENT_TYPE = 8;
uint8 constant INITIALIZATION_MSG_TYPE = 11;