// 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 >=0.6.0 <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 >=0.6.2 <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: AGPL-3.0-or-later
// Copyright (C) 2021 Dai Foundation
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
pragma solidity ^0.6.11;
interface ApproveLike {
  function approve(address, uint256) external;
}
// Escrow funds on L1, manage approval rights
contract L1Escrow {
  // --- Auth ---
  mapping(address => uint256) public wards;
  function rely(address usr) external auth {
    wards[usr] = 1;
    emit Rely(usr);
  }
  function deny(address usr) external auth {
    wards[usr] = 0;
    emit Deny(usr);
  }
  modifier auth() {
    require(wards[msg.sender] == 1, "L1Escrow/not-authorized");
    _;
  }
  event Rely(address indexed usr);
  event Deny(address indexed usr);
  event Approve(address indexed token, address indexed spender, uint256 value);
  constructor() public {
    wards[msg.sender] = 1;
    emit Rely(msg.sender);
  }
  function approve(
    address token,
    address spender,
    uint256 value
  ) external auth {
    emit Approve(token, spender, value);
    ApproveLike(token).approve(spender, value);
  }
}

// hevm: flattened sources of /nix/store/8xb41r4qd0cjb63wcrxf1qmfg88p0961-dss-6fd7de0/src/dai.sol
pragma solidity =0.5.12;

////// /nix/store/8xb41r4qd0cjb63wcrxf1qmfg88p0961-dss-6fd7de0/src/lib.sol
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

/* pragma solidity 0.5.12; */

contract LibNote {
    event LogNote(
        bytes4   indexed  sig,
        address  indexed  usr,
        bytes32  indexed  arg1,
        bytes32  indexed  arg2,
        bytes             data
    ) anonymous;

    modifier note {
        _;
        assembly {
            // log an 'anonymous' event with a constant 6 words of calldata
            // and four indexed topics: selector, caller, arg1 and arg2
            let mark := msize                         // end of memory ensures zero
            mstore(0x40, add(mark, 288))              // update free memory pointer
            mstore(mark, 0x20)                        // bytes type data offset
            mstore(add(mark, 0x20), 224)              // bytes size (padded)
            calldatacopy(add(mark, 0x40), 0, 224)     // bytes payload
            log4(mark, 288,                           // calldata
                 shl(224, shr(224, calldataload(0))), // msg.sig
                 caller,                              // msg.sender
                 calldataload(4),                     // arg1
                 calldataload(36)                     // arg2
                )
        }
    }
}

////// /nix/store/8xb41r4qd0cjb63wcrxf1qmfg88p0961-dss-6fd7de0/src/dai.sol
// Copyright (C) 2017, 2018, 2019 dbrock, rain, mrchico

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

/* pragma solidity 0.5.12; */

/* import "./lib.sol"; */

contract Dai is LibNote {
    // --- Auth ---
    mapping (address => uint) public wards;
    function rely(address guy) external note auth { wards[guy] = 1; }
    function deny(address guy) external note auth { wards[guy] = 0; }
    modifier auth {
        require(wards[msg.sender] == 1, "Dai/not-authorized");
        _;
    }

    // --- ERC20 Data ---
    string  public constant name     = "Dai Stablecoin";
    string  public constant symbol   = "DAI";
    string  public constant version  = "1";
    uint8   public constant decimals = 18;
    uint256 public totalSupply;

    mapping (address => uint)                      public balanceOf;
    mapping (address => mapping (address => uint)) public allowance;
    mapping (address => uint)                      public nonces;

    event Approval(address indexed src, address indexed guy, uint wad);
    event Transfer(address indexed src, address indexed dst, uint wad);

    // --- Math ---
    function add(uint x, uint y) internal pure returns (uint z) {
        require((z = x + y) >= x);
    }
    function sub(uint x, uint y) internal pure returns (uint z) {
        require((z = x - y) <= x);
    }

    // --- EIP712 niceties ---
    bytes32 public DOMAIN_SEPARATOR;
    // bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address holder,address spender,uint256 nonce,uint256 expiry,bool allowed)");
    bytes32 public constant PERMIT_TYPEHASH = 0xea2aa0a1be11a07ed86d755c93467f4f82362b452371d1ba94d1715123511acb;

    constructor(uint256 chainId_) public {
        wards[msg.sender] = 1;
        DOMAIN_SEPARATOR = keccak256(abi.encode(
            keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
            keccak256(bytes(name)),
            keccak256(bytes(version)),
            chainId_,
            address(this)
        ));
    }

    // --- Token ---
    function transfer(address dst, uint wad) external returns (bool) {
        return transferFrom(msg.sender, dst, wad);
    }
    function transferFrom(address src, address dst, uint wad)
        public returns (bool)
    {
        require(balanceOf[src] >= wad, "Dai/insufficient-balance");
        if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) {
            require(allowance[src][msg.sender] >= wad, "Dai/insufficient-allowance");
            allowance[src][msg.sender] = sub(allowance[src][msg.sender], wad);
        }
        balanceOf[src] = sub(balanceOf[src], wad);
        balanceOf[dst] = add(balanceOf[dst], wad);
        emit Transfer(src, dst, wad);
        return true;
    }
    function mint(address usr, uint wad) external auth {
        balanceOf[usr] = add(balanceOf[usr], wad);
        totalSupply    = add(totalSupply, wad);
        emit Transfer(address(0), usr, wad);
    }
    function burn(address usr, uint wad) external {
        require(balanceOf[usr] >= wad, "Dai/insufficient-balance");
        if (usr != msg.sender && allowance[usr][msg.sender] != uint(-1)) {
            require(allowance[usr][msg.sender] >= wad, "Dai/insufficient-allowance");
            allowance[usr][msg.sender] = sub(allowance[usr][msg.sender], wad);
        }
        balanceOf[usr] = sub(balanceOf[usr], wad);
        totalSupply    = sub(totalSupply, wad);
        emit Transfer(usr, address(0), wad);
    }
    function approve(address usr, uint wad) external returns (bool) {
        allowance[msg.sender][usr] = wad;
        emit Approval(msg.sender, usr, wad);
        return true;
    }

    // --- Alias ---
    function push(address usr, uint wad) external {
        transferFrom(msg.sender, usr, wad);
    }
    function pull(address usr, uint wad) external {
        transferFrom(usr, msg.sender, wad);
    }
    function move(address src, address dst, uint wad) external {
        transferFrom(src, dst, wad);
    }

    // --- Approve by signature ---
    function permit(address holder, address spender, uint256 nonce, uint256 expiry,
                    bool allowed, uint8 v, bytes32 r, bytes32 s) external
    {
        bytes32 digest =
            keccak256(abi.encodePacked(
                "\x19\x01",
                DOMAIN_SEPARATOR,
                keccak256(abi.encode(PERMIT_TYPEHASH,
                                     holder,
                                     spender,
                                     nonce,
                                     expiry,
                                     allowed))
        ));

        require(holder != address(0), "Dai/invalid-address-0");
        require(holder == ecrecover(digest, v, r, s), "Dai/invalid-permit");
        require(expiry == 0 || now <= expiry, "Dai/permit-expired");
        require(nonce == nonces[holder]++, "Dai/invalid-nonce");
        uint wad = allowed ? uint(-1) : 0;
        allowance[holder][spender] = wad;
        emit Approval(holder, spender, wad);
    }
}

// SPDX-License-Identifier: AGPL-3.0-or-later
// Copyright (C) 2021 Dai Foundation
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
pragma solidity ^0.6.11;
import "./L1ITokenGateway.sol";
import "../l2/L2ITokenGateway.sol";
import "./L1CrossDomainEnabled.sol";
interface TokenLike {
  function transferFrom(
    address _from,
    address _to,
    uint256 _value
  ) external returns (bool success);
}
contract L1DaiGateway is L1CrossDomainEnabled, L1ITokenGateway {
  // --- Auth ---
  mapping(address => uint256) public wards;
  function rely(address usr) external auth {
    wards[usr] = 1;
    emit Rely(usr);
  }
  function deny(address usr) external auth {
    wards[usr] = 0;
    emit Deny(usr);
  }
  modifier auth() {
    require(wards[msg.sender] == 1, "L1DaiGateway/not-authorized");
    _;
  }
  event Rely(address indexed usr);
  event Deny(address indexed usr);
  address public immutable l1Dai;
  address public immutable l2Dai;
  address public immutable l1Escrow;
  address public immutable l1Router;
  address public immutable l2Counterpart;
  uint256 public isOpen = 1;
  event Closed();
  constructor(
    address _l2Counterpart,
    address _l1Router,
    address _inbox,
    address _l1Dai,
    address _l2Dai,
    address _l1Escrow
  ) public L1CrossDomainEnabled(_inbox) {
    wards[msg.sender] = 1;
    emit Rely(msg.sender);
    l1Dai = _l1Dai;
    l2Dai = _l2Dai;
    l1Escrow = _l1Escrow;
    l1Router = _l1Router;
    l2Counterpart = _l2Counterpart;
  }
  function close() external auth {
    isOpen = 0;
    emit Closed();
  }
  function outboundTransfer(
    address l1Token,
    address to,
    uint256 amount,
    uint256 maxGas,
    uint256 gasPriceBid,
    bytes calldata data
  ) external payable override returns (bytes memory) {
    // do not allow initiating new xchain messages if bridge is closed
    require(isOpen == 1, "L1DaiGateway/closed");
    require(l1Token == l1Dai, "L1DaiGateway/token-not-dai");
    // we use nested scope to avoid stack too deep errors
    address from;
    uint256 seqNum;
    bytes memory extraData;
    {
      uint256 maxSubmissionCost;
      (from, maxSubmissionCost, extraData) = parseOutboundData(data);
      require(extraData.length == 0, "L1DaiGateway/call-hook-data-not-allowed");
      TokenLike(l1Token).transferFrom(from, l1Escrow, amount);
      bytes memory outboundCalldata = getOutboundCalldata(l1Token, from, to, amount, extraData);
      seqNum = sendTxToL2(
        l2Counterpart,
        from,
        maxSubmissionCost,
        maxGas,
        gasPriceBid,
        outboundCalldata
      );
    }
    emit DepositInitiated(l1Token, from, to, seqNum, amount);
    return abi.encode(seqNum);
  }
  function getOutboundCalldata(
    address l1Token,
    address from,
    address to,
    uint256 amount,
    bytes memory data
  ) public pure returns (bytes memory outboundCalldata) {
    bytes memory emptyBytes = "";
    outboundCalldata = abi.encodeWithSelector(
      L2ITokenGateway.finalizeInboundTransfer.selector,
      l1Token,
      from,
      to,
      amount,
      abi.encode(emptyBytes, data)
    );
    return outboundCalldata;
  }
  function finalizeInboundTransfer(
    address l1Token,
    address from,
    address to,
    uint256 amount,
    bytes calldata data
  ) external override onlyL2Counterpart(l2Counterpart) {
    require(l1Token == l1Dai, "L1DaiGateway/token-not-dai");
    (uint256 exitNum, ) = abi.decode(data, (uint256, bytes));
    TokenLike(l1Token).transferFrom(l1Escrow, to, amount);
    emit WithdrawalFinalized(l1Token, from, to, exitNum, amount);
  }
  function parseOutboundData(bytes memory data)
    internal
    view
    returns (
      address from,
      uint256 maxSubmissionCost,
      bytes memory extraData
    )
  {
    if (msg.sender == l1Router) {
      // router encoded
      (from, extraData) = abi.decode(data, (address, bytes));
    } else {
      from = msg.sender;
      extraData = data;
    }
    // user encoded
    (maxSubmissionCost, extraData) = abi.decode(extraData, (uint256, bytes));
  }
  function calculateL2TokenAddress(address l1Token) external view override returns (address) {
    if (l1Token != l1Dai) {
      return address(0);
    }
    return l2Dai;
  }
  function counterpartGateway() external view override returns (address) {
    return l2Counterpart;
  }
}
// SPDX-License-Identifier: AGPL-3.0-or-later
// Copyright (C) 2021 Dai Foundation
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
pragma solidity ^0.6.11;
// differences between L1 and L2 version of this interface:
// - payable modifier on outboundTransfer
// - events
interface L1ITokenGateway {
  event DepositInitiated(
    address l1Token,
    address indexed from,
    address indexed to,
    uint256 indexed sequenceNumber,
    uint256 amount
  );
  event WithdrawalFinalized(
    address l1Token,
    address indexed from,
    address indexed to,
    uint256 indexed exitNum,
    uint256 amount
  );
  function outboundTransfer(
    address token,
    address to,
    uint256 amount,
    uint256 maxGas,
    uint256 gasPriceBid,
    bytes calldata data
  ) external payable returns (bytes memory);
  function finalizeInboundTransfer(
    address token,
    address from,
    address to,
    uint256 amount,
    bytes calldata data
  ) external;
  // if token is not supported this should return 0x0 address
  function calculateL2TokenAddress(address l1Token) external view returns (address);
  // used by router
  function counterpartGateway() external view returns (address);
}
// SPDX-License-Identifier: AGPL-3.0-or-later
// Copyright (C) 2021 Dai Foundation
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
pragma solidity ^0.6.11;
interface L2ITokenGateway {
  event DepositFinalized(
    address indexed l1Token,
    address indexed from,
    address indexed to,
    uint256 amount
  );
  event WithdrawalInitiated(
    address l1Token,
    address indexed from,
    address indexed to,
    uint256 indexed l2ToL1Id,
    uint256 exitNum,
    uint256 amount
  );
  function outboundTransfer(
    address token,
    address to,
    uint256 amount,
    uint256 maxGas,
    uint256 gasPriceBid,
    bytes calldata data
  ) external returns (bytes memory);
  function finalizeInboundTransfer(
    address token,
    address from,
    address to,
    uint256 amount,
    bytes calldata data
  ) external;
  // if token is not supported this should return 0x0 address
  function calculateL2TokenAddress(address l1Token) external view returns (address);
  // used by router
  function counterpartGateway() external view returns (address);
}
// SPDX-License-Identifier: AGPL-3.0-or-later
// Copyright (C) 2021 Dai Foundation
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
pragma solidity ^0.6.11;
import "../arbitrum/IBridge.sol";
import "../arbitrum/IInbox.sol";
import "../arbitrum/IOutbox.sol";
abstract contract L1CrossDomainEnabled {
  IInbox public immutable inbox;
  event TxToL2(address indexed from, address indexed to, uint256 indexed seqNum, bytes data);
  constructor(address _inbox) public {
    inbox = IInbox(_inbox);
  }
  modifier onlyL2Counterpart(address l2Counterpart) {
    // a message coming from the counterpart gateway was executed by the bridge
    address bridge = inbox.bridge();
    require(msg.sender == bridge, "NOT_FROM_BRIDGE");
    // and the outbox reports that the L2 address of the sender is the counterpart gateway
    address l2ToL1Sender = IOutbox(IBridge(bridge).activeOutbox()).l2ToL1Sender();
    require(l2ToL1Sender == l2Counterpart, "ONLY_COUNTERPART_GATEWAY");
    _;
  }
  function sendTxToL2(
    address target,
    address user,
    uint256 maxSubmissionCost,
    uint256 maxGas,
    uint256 gasPriceBid,
    bytes memory data
  ) internal returns (uint256) {
    uint256 seqNum = inbox.createRetryableTicket{value: msg.value}(
      target,
      0, // we always assume that l2CallValue = 0
      maxSubmissionCost,
      user,
      user,
      maxGas,
      gasPriceBid,
      data
    );
    emit TxToL2(user, target, seqNum, data);
    return seqNum;
  }
  function sendTxToL2NoAliasing(
    address target,
    address user,
    uint256 l1CallValue,
    uint256 maxSubmissionCost,
    uint256 maxGas,
    uint256 gasPriceBid,
    bytes memory data
  ) internal returns (uint256) {
    uint256 seqNum = inbox.createRetryableTicketNoRefundAliasRewrite{value: l1CallValue}(
      target,
      0, // we always assume that l2CallValue = 0
      maxSubmissionCost,
      user,
      user,
      maxGas,
      gasPriceBid,
      data
    );
    emit TxToL2(user, target, seqNum, data);
    return seqNum;
  }
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
interface IBridge {
  event MessageDelivered(
    uint256 indexed messageIndex,
    bytes32 indexed beforeInboxAcc,
    address inbox,
    uint8 kind,
    address sender,
    bytes32 messageDataHash
  );
  event BridgeCallTriggered(
    address indexed outbox,
    address indexed destAddr,
    uint256 amount,
    bytes data
  );
  event InboxToggle(address indexed inbox, bool enabled);
  event OutboxToggle(address indexed outbox, bool enabled);
  function deliverMessageToInbox(
    uint8 kind,
    address sender,
    bytes32 messageDataHash
  ) external payable returns (uint256);
  function executeCall(
    address destAddr,
    uint256 amount,
    bytes calldata data
  ) external returns (bool success, bytes memory returnData);
  // These are only callable by the admin
  function setInbox(address inbox, bool enabled) external;
  function setOutbox(address inbox, bool enabled) external;
  // View functions
  function activeOutbox() external view returns (address);
  function allowedInboxes(address inbox) external view returns (bool);
  function allowedOutboxes(address outbox) external view returns (bool);
  function inboxAccs(uint256 index) external view returns (bytes32);
  function messageCount() external view returns (uint256);
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
import "./IMessageProvider.sol";
interface IInbox is IMessageProvider {
  function sendL2Message(bytes calldata messageData) external returns (uint256);
  function sendUnsignedTransaction(
    uint256 maxGas,
    uint256 gasPriceBid,
    uint256 nonce,
    address destAddr,
    uint256 amount,
    bytes calldata data
  ) external returns (uint256);
  function sendContractTransaction(
    uint256 maxGas,
    uint256 gasPriceBid,
    address destAddr,
    uint256 amount,
    bytes calldata data
  ) external returns (uint256);
  function sendL1FundedUnsignedTransaction(
    uint256 maxGas,
    uint256 gasPriceBid,
    uint256 nonce,
    address destAddr,
    bytes calldata data
  ) external payable returns (uint256);
  function sendL1FundedContractTransaction(
    uint256 maxGas,
    uint256 gasPriceBid,
    address destAddr,
    bytes calldata data
  ) external payable returns (uint256);
  function createRetryableTicket(
    address destAddr,
    uint256 arbTxCallValue,
    uint256 maxSubmissionCost,
    address submissionRefundAddress,
    address valueRefundAddress,
    uint256 maxGas,
    uint256 gasPriceBid,
    bytes calldata data
  ) external payable returns (uint256);
  function createRetryableTicketNoRefundAliasRewrite(
    address destAddr,
    uint256 arbTxCallValue,
    uint256 maxSubmissionCost,
    address submissionRefundAddress,
    address valueRefundAddress,
    uint256 maxGas,
    uint256 gasPriceBid,
    bytes calldata data
  ) external payable returns (uint256);
  function depositEth(uint256 maxSubmissionCost) external payable returns (uint256);
  function bridge() external view returns (address);
  function pauseCreateRetryables() external;
  function unpauseCreateRetryables() external;
  function startRewriteAddress() external;
  function stopRewriteAddress() external;
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
interface IOutbox {
  event OutboxEntryCreated(
    uint256 indexed batchNum,
    uint256 outboxEntryIndex,
    bytes32 outputRoot,
    uint256 numInBatch
  );
  event OutBoxTransactionExecuted(
    address indexed destAddr,
    address indexed l2Sender,
    uint256 indexed outboxEntryIndex,
    uint256 transactionIndex
  );
  function l2ToL1Sender() external view returns (address);
  function l2ToL1Block() external view returns (uint256);
  function l2ToL1EthBlock() external view returns (uint256);
  function l2ToL1Timestamp() external view returns (uint256);
  function l2ToL1BatchNum() external view returns (uint256);
  function l2ToL1OutputId() external view returns (bytes32);
  function processOutgoingMessages(bytes calldata sendsData, uint256[] calldata sendLengths)
    external;
  function outboxEntryExists(uint256 batchNum) external view returns (bool);
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
interface IMessageProvider {
  event InboxMessageDelivered(uint256 indexed messageNum, bytes data);
  event InboxMessageDeliveredFromOrigin(uint256 indexed messageNum);
}

// 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: Apache-2.0
/*
 * Copyright 2019-2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
import "./interfaces/IOutbox.sol";
import "./interfaces/IBridge.sol";
import { NitroReadyMagicNums } from "./NitroMigratorUtil.sol";
import "./Messages.sol";
import "../libraries/MerkleLib.sol";
import "../libraries/BytesLib.sol";
import "../libraries/Cloneable.sol";
import "../rollup/Rollup.sol";
import "@openzeppelin/contracts/proxy/BeaconProxy.sol";
import "@openzeppelin/contracts/proxy/UpgradeableBeacon.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
contract Outbox is IOutbox, Cloneable {
    using BytesLib for bytes;
    struct OutboxEntry {
        // merkle root of outputs
        bytes32 root;
        // mapping from output id => is spent
        mapping(bytes32 => bool) spentOutput;
    }
    bytes1 internal constant MSG_ROOT = 0;
    uint8 internal constant SendType_sendTxToL1 = 3;
    address public rollup;
    IBridge public bridge;
    mapping(uint256 => OutboxEntry) public outboxEntries;
    struct L2ToL1Context {
        uint128 l2Block;
        uint128 l1Block;
        uint128 timestamp;
        uint128 batchNum;
        bytes32 outputId;
        address sender;
    }
    // Note, these variables are set and then wiped during a single transaction.
    // Therefore their values don't need to be maintained, and their slots will
    // be empty outside of transactions
    L2ToL1Context internal context;
    uint128 public constant OUTBOX_VERSION = 1;
    function initialize(address _rollup, IBridge _bridge) external {
        require(rollup == address(0), "ALREADY_INIT");
        rollup = _rollup;
        bridge = _bridge;
    }
    /// @notice When l2ToL1Sender returns a nonzero address, the message was originated by an L2 account
    /// When the return value is zero, that means this is a system message
    /// @dev the l2ToL1Sender behaves as the tx.origin, the msg.sender should be validated to protect against reentrancies
    function l2ToL1Sender() external view override returns (address) {
        return context.sender;
    }
    function l2ToL1Block() external view override returns (uint256) {
        return uint256(context.l2Block);
    }
    function l2ToL1EthBlock() external view override returns (uint256) {
        return uint256(context.l1Block);
    }
    function l2ToL1Timestamp() external view override returns (uint256) {
        return uint256(context.timestamp);
    }
    function l2ToL1BatchNum() external view override returns (uint256) {
        return uint256(context.batchNum);
    }
    function l2ToL1OutputId() external view override returns (bytes32) {
        return context.outputId;
    }
    function processOutgoingMessages(bytes calldata sendsData, uint256[] calldata sendLengths)
        external
        override
    {
        require(msg.sender == rollup, "ONLY_ROLLUP");
        // If we've reached here, we've already confirmed that sum(sendLengths) == sendsData.length
        uint256 messageCount = sendLengths.length;
        uint256 offset = 0;
        for (uint256 i = 0; i < messageCount; i++) {
            handleOutgoingMessage(bytes(sendsData[offset:offset + sendLengths[i]]));
            offset += sendLengths[i];
        }
    }
    function handleOutgoingMessage(bytes memory data) private {
        // Otherwise we have an unsupported message type and we skip the message
        if (data[0] == MSG_ROOT) {
            require(data.length == 97, "BAD_LENGTH");
            uint256 batchNum = data.toUint(1);
            // Ensure no outbox entry already exists w/ batch number
            require(!outboxEntryExists(batchNum), "ENTRY_ALREADY_EXISTS");
            // This is the total number of msgs included in the root, it can be used to
            // detect when all msgs were executed against a root.
            // It currently isn't stored, but instead emitted in an event for utility
            uint256 numInBatch = data.toUint(33);
            bytes32 outputRoot = data.toBytes32(65);
            OutboxEntry memory newOutboxEntry = OutboxEntry(outputRoot);
            outboxEntries[batchNum] = newOutboxEntry;
            // keeping redundant batchnum in event (batchnum and old outboxindex field) for outbox version interface compatibility
            emit OutboxEntryCreated(batchNum, batchNum, outputRoot, numInBatch);
        }
    }
    /**
     * @notice Executes a messages in an Outbox entry.
     * @dev Reverts if dispute period hasn't expired, since the outbox entry
     * is only created once the rollup confirms the respective assertion.
     * @param batchNum Index of OutboxEntry in outboxEntries array
     * @param proof Merkle proof of message inclusion in outbox entry
     * @param index Merkle path to message
     * @param l2Sender sender if original message (i.e., caller of ArbSys.sendTxToL1)
     * @param destAddr destination address for L1 contract call
     * @param l2Block l2 block number at which sendTxToL1 call was made
     * @param l1Block l1 block number at which sendTxToL1 call was made
     * @param l2Timestamp l2 Timestamp at which sendTxToL1 call was made
     * @param amount value in L1 message in wei
     * @param calldataForL1 abi-encoded L1 message data
     */
    function executeTransaction(
        uint256 batchNum,
        bytes32[] calldata proof,
        uint256 index,
        address l2Sender,
        address destAddr,
        uint256 l2Block,
        uint256 l1Block,
        uint256 l2Timestamp,
        uint256 amount,
        bytes calldata calldataForL1
    ) external virtual {
        bytes32 outputId;
        {
            bytes32 userTx = calculateItemHash(
                l2Sender,
                destAddr,
                l2Block,
                l1Block,
                l2Timestamp,
                amount,
                calldataForL1
            );
            outputId = recordOutputAsSpent(batchNum, proof, index, userTx);
            emit OutBoxTransactionExecuted(destAddr, l2Sender, batchNum, index);
        }
        // we temporarily store the previous values so the outbox can naturally
        // unwind itself when there are nested calls to `executeTransaction`
        L2ToL1Context memory prevContext = context;
        context = L2ToL1Context({
            sender: l2Sender,
            l2Block: uint128(l2Block),
            l1Block: uint128(l1Block),
            timestamp: uint128(l2Timestamp),
            batchNum: uint128(batchNum),
            outputId: outputId
        });
        // set and reset vars around execution so they remain valid during call
        executeBridgeCall(destAddr, amount, calldataForL1);
        context = prevContext;
    }
    function recordOutputAsSpent(
        uint256 batchNum,
        bytes32[] memory proof,
        uint256 path,
        bytes32 item
    ) internal returns (bytes32) {
        require(proof.length < 256, "PROOF_TOO_LONG");
        require(path < 2**proof.length, "PATH_NOT_MINIMAL");
        // Hash the leaf an extra time to prove it's a leaf
        bytes32 calcRoot = calculateMerkleRoot(proof, path, item);
        OutboxEntry storage outboxEntry = outboxEntries[batchNum];
        require(outboxEntry.root != bytes32(0), "NO_OUTBOX_ENTRY");
        // With a minimal path, the pair of path and proof length should always identify
        // a unique leaf. The path itself is not enough since the path length to different
        // leaves could potentially be different
        bytes32 uniqueKey = keccak256(abi.encodePacked(path, proof.length));
        require(!outboxEntry.spentOutput[uniqueKey], "ALREADY_SPENT");
        require(calcRoot == outboxEntry.root, "BAD_ROOT");
        outboxEntry.spentOutput[uniqueKey] = true;
        return uniqueKey;
    }
    function executeBridgeCall(
        address destAddr,
        uint256 amount,
        bytes memory data
    ) internal {
        (bool success, bytes memory returndata) = bridge.executeCall(destAddr, amount, data);
        if (!success) {
            if (returndata.length > 0) {
                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert("BRIDGE_CALL_FAILED");
            }
        }
    }
    function calculateItemHash(
        address l2Sender,
        address destAddr,
        uint256 l2Block,
        uint256 l1Block,
        uint256 l2Timestamp,
        uint256 amount,
        bytes calldata calldataForL1
    ) public pure returns (bytes32) {
        return
            keccak256(
                abi.encodePacked(
                    SendType_sendTxToL1,
                    uint256(uint160(bytes20(l2Sender))),
                    uint256(uint160(bytes20(destAddr))),
                    l2Block,
                    l1Block,
                    l2Timestamp,
                    amount,
                    calldataForL1
                )
            );
    }
    function calculateMerkleRoot(
        bytes32[] memory proof,
        uint256 path,
        bytes32 item
    ) public pure returns (bytes32) {
        return MerkleLib.calculateRoot(proof, path, keccak256(abi.encodePacked(item)));
    }
    function outboxEntryExists(uint256 batchNum) public view override returns (bool) {
        return outboxEntries[batchNum].root != bytes32(0);
    }
    function setBridge(IBridge newBridge) external override {
        require(msg.sender == OwnableUpgradeable(address(bridge)).owner(), "NOT_BRIDGE_OWNER");
        bridge = newBridge;
    }
    function isNitroReady() external pure override returns (uint256) {
        return NitroReadyMagicNums.OUTBOX;
    }
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "./IBridge.sol";
interface IOutbox {
    event OutboxEntryCreated(
        uint256 indexed batchNum,
        uint256 outboxEntryIndex,
        bytes32 outputRoot,
        uint256 numInBatch
    );
    event OutBoxTransactionExecuted(
        address indexed destAddr,
        address indexed l2Sender,
        uint256 indexed outboxEntryIndex,
        uint256 transactionIndex
    );
    function l2ToL1Sender() external view returns (address);
    function l2ToL1Block() external view returns (uint256);
    function l2ToL1EthBlock() external view returns (uint256);
    function l2ToL1Timestamp() external view returns (uint256);
    function l2ToL1BatchNum() external view returns (uint256);
    function l2ToL1OutputId() external view returns (bytes32);
    function processOutgoingMessages(bytes calldata sendsData, uint256[] calldata sendLengths)
        external;
    function outboxEntryExists(uint256 batchNum) external view returns (bool);
    function setBridge(IBridge newBridge) external;
    function isNitroReady() external pure returns (uint256);
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
interface IBridge {
    event MessageDelivered(
        uint256 indexed messageIndex,
        bytes32 indexed beforeInboxAcc,
        address inbox,
        uint8 kind,
        address sender,
        bytes32 messageDataHash
    );
    event BridgeCallTriggered(
        address indexed outbox,
        address indexed destAddr,
        uint256 amount,
        bytes data
    );
    event InboxToggle(address indexed inbox, bool enabled);
    event OutboxToggle(address indexed outbox, bool enabled);
    function deliverMessageToInbox(
        uint8 kind,
        address sender,
        bytes32 messageDataHash
    ) external payable returns (uint256);
    function executeCall(
        address destAddr,
        uint256 amount,
        bytes calldata data
    ) external returns (bool success, bytes memory returnData);
    // These are only callable by the admin
    function setInbox(address inbox, bool enabled) external;
    function setOutbox(address inbox, bool enabled) external;
    // View functions
    function activeOutbox() external view returns (address);
    function allowedInboxes(address inbox) external view returns (bool);
    function allowedOutboxes(address outbox) external view returns (bool);
    function inboxAccs(uint256 index) external view returns (bytes32);
    function messageCount() external view returns (uint256);
    function isNitroReady() external view returns (uint256);
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2019-2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
pragma experimental ABIEncoderV2;
import "./interfaces/IInbox.sol";
import "@arbitrum/nitro-contracts/src/bridge/IBridge.sol" as INitroBridge;
import "@arbitrum/nitro-contracts/src/bridge/IInbox.sol" as INitroInbox;
interface INitroRollup {
    struct GlobalState {
        bytes32[2] bytes32Vals;
        uint64[2] u64Vals;
    }
    enum MachineStatus {
        RUNNING,
        FINISHED,
        ERRORED,
        TOO_FAR
    }
    struct ExecutionState {
        GlobalState globalState;
        MachineStatus machineStatus;
    }
    struct NitroRollupAssertion {
        ExecutionState beforeState;
        ExecutionState afterState;
        uint64 numBlocks;
    }
    function bridge() external view returns (INitroBridge.IBridge);
    function inbox() external view returns (INitroInbox.IInbox);
    function setInbox(IInbox newInbox) external;
    function setOwner(address newOwner) external;
    function paused() external view returns (bool);
    function pause() external;
    function resume() external;
    function latestNodeCreated() external returns (uint64);
    function createNitroMigrationGenesis(NitroRollupAssertion calldata assertion) external;
}
interface IArbOwner {
    function addChainOwner(address newOwner) external;
}
/// @dev lib used since file level consts aren't available in this solc version
library NitroReadyMagicNums {
    uint256 constant ROLLUP_USER = 0xa4b1;
    uint256 constant ROLLUP_ADMIN = 0xa4b2;
    uint256 constant NODE_BEACON = 0xa4b3;
    uint256 constant OUTBOX = 0xa4b4;
    uint256 constant BRIDGE = 0xa4b5;
    uint256 constant DELAYED_INBOX = 0xa4b6;
    uint256 constant SEQ_INBOX = 0xa4b7;
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2019-2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
library Messages {
    function messageHash(
        uint8 kind,
        address sender,
        uint256 blockNumber,
        uint256 timestamp,
        uint256 inboxSeqNum,
        uint256 gasPriceL1,
        bytes32 messageDataHash
    ) internal pure returns (bytes32) {
        return
            keccak256(
                abi.encodePacked(
                    kind,
                    sender,
                    blockNumber,
                    timestamp,
                    inboxSeqNum,
                    gasPriceL1,
                    messageDataHash
                )
            );
    }
    function addMessageToInbox(bytes32 inbox, bytes32 message) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(inbox, message));
    }
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2019-2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
library MerkleLib {
    function generateRoot(bytes32[] memory _hashes) internal pure returns (bytes32) {
        bytes32[] memory prevLayer = _hashes;
        while (prevLayer.length > 1) {
            bytes32[] memory nextLayer = new bytes32[]((prevLayer.length + 1) / 2);
            for (uint256 i = 0; i < nextLayer.length; i++) {
                if (2 * i + 1 < prevLayer.length) {
                    nextLayer[i] = keccak256(
                        abi.encodePacked(prevLayer[2 * i], prevLayer[2 * i + 1])
                    );
                } else {
                    nextLayer[i] = prevLayer[2 * i];
                }
            }
            prevLayer = nextLayer;
        }
        return prevLayer[0];
    }
    function calculateRoot(
        bytes32[] memory nodes,
        uint256 route,
        bytes32 item
    ) internal pure returns (bytes32) {
        uint256 proofItems = nodes.length;
        require(proofItems <= 256);
        bytes32 h = item;
        for (uint256 i = 0; i < proofItems; i++) {
            if (route % 2 == 0) {
                h = keccak256(abi.encodePacked(nodes[i], h));
            } else {
                h = keccak256(abi.encodePacked(h, nodes[i]));
            }
            route /= 2;
        }
        return h;
    }
}
// SPDX-License-Identifier: MIT
/*
 * @title Solidity Bytes Arrays Utils
 * @author Gonçalo Sá <[email protected]>
 *
 * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity.
 *      The library lets you concatenate, slice and type cast bytes arrays both in memory and storage.
 */
pragma solidity ^0.6.11;
/* solhint-disable no-inline-assembly */
library BytesLib {
    function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) {
        require(_bytes.length >= (_start + 20), "Read out of bounds");
        address tempAddress;
        assembly {
            tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000)
        }
        return tempAddress;
    }
    function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) {
        require(_bytes.length >= (_start + 1), "Read out of bounds");
        uint8 tempUint;
        assembly {
            tempUint := mload(add(add(_bytes, 0x1), _start))
        }
        return tempUint;
    }
    function toUint(bytes memory _bytes, uint256 _start) internal pure returns (uint256) {
        require(_bytes.length >= (_start + 32), "Read out of bounds");
        uint256 tempUint;
        assembly {
            tempUint := mload(add(add(_bytes, 0x20), _start))
        }
        return tempUint;
    }
    function toBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32) {
        require(_bytes.length >= (_start + 32), "Read out of bounds");
        bytes32 tempBytes32;
        assembly {
            tempBytes32 := mload(add(add(_bytes, 0x20), _start))
        }
        return tempBytes32;
    }
}
/* solhint-enable no-inline-assembly */
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2019-2020, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
import "./ICloneable.sol";
contract Cloneable is ICloneable {
    string private constant NOT_CLONE = "NOT_CLONE";
    bool private isMasterCopy;
    constructor() public {
        isMasterCopy = true;
    }
    function isMaster() external view override returns (bool) {
        return isMasterCopy;
    }
    function safeSelfDestruct(address payable dest) internal {
        require(!isMasterCopy, NOT_CLONE);
        selfdestruct(dest);
    }
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
import "@openzeppelin/contracts/utils/Pausable.sol";
import "@openzeppelin/contracts/proxy/Proxy.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "./RollupEventBridge.sol";
import "./RollupCore.sol";
import "./RollupLib.sol";
import "./INode.sol";
import "./INodeFactory.sol";
import "../challenge/IChallenge.sol";
import "../challenge/IChallengeFactory.sol";
import "../bridge/interfaces/IBridge.sol";
import "../bridge/interfaces/IOutbox.sol";
import "../bridge/Messages.sol";
import "../libraries/ProxyUtil.sol";
import "../libraries/Cloneable.sol";
import "./facets/IRollupFacets.sol";
abstract contract RollupBase is Cloneable, RollupCore, Pausable {
    // Rollup Config
    uint256 public confirmPeriodBlocks;
    uint256 public extraChallengeTimeBlocks;
    uint256 public avmGasSpeedLimitPerBlock;
    uint256 public baseStake;
    // Bridge is an IInbox and IOutbox
    IBridge public delayedBridge;
    ISequencerInbox public sequencerBridge;
    IOutbox public outbox;
    RollupEventBridge public rollupEventBridge;
    IChallengeFactory public challengeFactory;
    INodeFactory public nodeFactory;
    address public owner;
    address public stakeToken;
    uint256 public minimumAssertionPeriod;
    uint256 public STORAGE_GAP_1;
    uint256 public STORAGE_GAP_2;
    uint256 public challengeExecutionBisectionDegree;
    address[] internal facets;
    mapping(address => bool) isValidator;
    /// @dev indicates the block which the rollup starts the shutdown for nitro mode
    uint256 public shutdownForNitroBlock;
    /// @dev indicates if rollup is in shutdown for nitro mode
    function shutdownForNitroMode() public view returns (bool) {
        return block.number >= shutdownForNitroBlock;
    }
    /// @dev allows a function to be executed either if contract is either in `shutdownForNitroMode` or not paused
    modifier whenInShutdownModeOrNotPaused() {
        if (!shutdownForNitroMode()) {
            require(!paused(), "Pausable: paused");
        }
        _;
    }
    /// @notice DEPRECATED -- this method is deprecated but still mantained for backward compatibility
    /// @dev this actually returns the avmGasSpeedLimitPerBlock
    /// @return this actually returns the avmGasSpeedLimitPerBlock
    function arbGasSpeedLimitPerBlock() external view returns (uint256) {
        return avmGasSpeedLimitPerBlock;
    }
}
contract Rollup is Proxy, RollupBase {
    using Address for address;
    constructor(uint256 _confirmPeriodBlocks) public Cloneable() Pausable() {
        // constructor is used so logic contract can't be init'ed
        confirmPeriodBlocks = _confirmPeriodBlocks;
        require(isInit(), "CONSTRUCTOR_NOT_INIT");
    }
    function isInit() internal view returns (bool) {
        return confirmPeriodBlocks != 0;
    }
    // _rollupParams = [ confirmPeriodBlocks, extraChallengeTimeBlocks, avmGasSpeedLimitPerBlock, baseStake ]
    // connectedContracts = [delayedBridge, sequencerInbox, outbox, rollupEventBridge, challengeFactory, nodeFactory]
    function initialize(
        bytes32 _machineHash,
        uint256[4] calldata _rollupParams,
        address _stakeToken,
        address _owner,
        bytes calldata _extraConfig,
        address[6] calldata connectedContracts,
        address[2] calldata _facets,
        uint256[2] calldata sequencerInboxParams
    ) public {
        require(!isInit(), "ALREADY_INIT");
        // calls initialize method in user facet
        require(_facets[0].isContract(), "FACET_0_NOT_CONTRACT");
        require(_facets[1].isContract(), "FACET_1_NOT_CONTRACT");
        (bool success, ) = _facets[1].delegatecall(
            abi.encodeWithSelector(IRollupUser.initialize.selector, _stakeToken)
        );
        require(success, "FAIL_INIT_FACET");
        delayedBridge = IBridge(connectedContracts[0]);
        sequencerBridge = ISequencerInbox(connectedContracts[1]);
        outbox = IOutbox(connectedContracts[2]);
        delayedBridge.setOutbox(connectedContracts[2], true);
        rollupEventBridge = RollupEventBridge(connectedContracts[3]);
        delayedBridge.setInbox(connectedContracts[3], true);
        rollupEventBridge.rollupInitialized(
            _rollupParams[0],
            _rollupParams[2],
            _owner,
            _extraConfig
        );
        challengeFactory = IChallengeFactory(connectedContracts[4]);
        nodeFactory = INodeFactory(connectedContracts[5]);
        INode node = createInitialNode(_machineHash);
        initializeCore(node);
        confirmPeriodBlocks = _rollupParams[0];
        extraChallengeTimeBlocks = _rollupParams[1];
        avmGasSpeedLimitPerBlock = _rollupParams[2];
        baseStake = _rollupParams[3];
        owner = _owner;
        // A little over 15 minutes
        minimumAssertionPeriod = 75;
        challengeExecutionBisectionDegree = 400;
        sequencerBridge.setMaxDelay(sequencerInboxParams[0], sequencerInboxParams[1]);
        // facets[0] == admin, facets[1] == user
        facets = _facets;
        shutdownForNitroBlock = type(uint256).max;
        emit RollupCreated(_machineHash);
        require(isInit(), "INITIALIZE_NOT_INIT");
    }
    function postUpgradeInit() external {
        // it is assumed the rollup contract is behind a Proxy controlled by a proxy admin
        // this function can only be called by the proxy admin contract
        address proxyAdmin = ProxyUtil.getProxyAdmin();
        require(msg.sender == proxyAdmin, "NOT_FROM_ADMIN");
        shutdownForNitroBlock = type(uint256).max;
    }
    function createInitialNode(bytes32 _machineHash) private returns (INode) {
        bytes32 state = RollupLib.stateHash(
            RollupLib.ExecutionState(
                0, // total gas used
                _machineHash,
                0, // inbox count
                0, // send count
                0, // log count
                0, // send acc
                0, // log acc
                block.number, // block proposed
                1 // Initialization message already in inbox
            )
        );
        return
            INode(
                nodeFactory.createNode(
                    state,
                    0, // challenge hash (not challengeable)
                    0, // confirm data
                    0, // prev node
                    block.number // deadline block (not challengeable)
                )
            );
    }
    /**
     * This contract uses a dispatch pattern from EIP-2535: Diamonds
     * together with Open Zeppelin's proxy
     */
    function getFacets() external view returns (address, address) {
        return (getAdminFacet(), getUserFacet());
    }
    function getAdminFacet() public view returns (address) {
        return facets[0];
    }
    function getUserFacet() public view returns (address) {
        return facets[1];
    }
    /**
     * @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 override returns (address) {
        require(msg.data.length >= 4, "NO_FUNC_SIG");
        address rollupOwner = owner;
        // if there is an owner and it is the sender, delegate to admin facet
        address target = rollupOwner != address(0) && rollupOwner == msg.sender
            ? getAdminFacet()
            : getUserFacet();
        require(target.isContract(), "TARGET_NOT_CONTRACT");
        return target;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./Proxy.sol";
import "../utils/Address.sol";
import "./IBeacon.sol";
/**
 * @dev This contract implements a proxy that gets the implementation address for each call from a {UpgradeableBeacon}.
 *
 * The beacon address is stored in storage slot `uint256(keccak256('eip1967.proxy.beacon')) - 1`, so that it doesn't
 * conflict with the storage layout of the implementation behind the proxy.
 *
 * _Available since v3.4._
 */
contract BeaconProxy is Proxy {
    /**
     * @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 private constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;
    /**
     * @dev Initializes the proxy with `beacon`.
     *
     * If `data` is nonempty, it's used as data in a delegate call to the implementation returned by the beacon. This
     * will typically be an encoded function call, and allows initializating the storage of the proxy like a Solidity
     * constructor.
     *
     * Requirements:
     *
     * - `beacon` must be a contract with the interface {IBeacon}.
     */
    constructor(address beacon, bytes memory data) public payable {
        assert(_BEACON_SLOT == bytes32(uint256(keccak256("eip1967.proxy.beacon")) - 1));
        _setBeacon(beacon, data);
    }
    /**
     * @dev Returns the current beacon address.
     */
    function _beacon() internal view virtual returns (address beacon) {
        bytes32 slot = _BEACON_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            beacon := sload(slot)
        }
    }
    /**
     * @dev Returns the current implementation address of the associated beacon.
     */
    function _implementation() internal view virtual override returns (address) {
        return IBeacon(_beacon()).implementation();
    }
    /**
     * @dev Changes the proxy to use a new beacon.
     *
     * If `data` is nonempty, it's used as data in a delegate call to the implementation returned by the beacon.
     *
     * Requirements:
     *
     * - `beacon` must be a contract.
     * - The implementation returned by `beacon` must be a contract.
     */
    function _setBeacon(address beacon, bytes memory data) internal virtual {
        require(
            Address.isContract(beacon),
            "BeaconProxy: beacon is not a contract"
        );
        require(
            Address.isContract(IBeacon(beacon).implementation()),
            "BeaconProxy: beacon implementation is not a contract"
        );
        bytes32 slot = _BEACON_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, beacon)
        }
        if (data.length > 0) {
            Address.functionDelegateCall(_implementation(), data, "BeaconProxy: function call failed");
        }
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./IBeacon.sol";
import "../access/Ownable.sol";
import "../utils/Address.sol";
/**
 * @dev This contract is used in conjunction with one or more instances of {BeaconProxy} to determine their
 * implementation contract, which is where they will delegate all function calls.
 *
 * An owner is able to change the implementation the beacon points to, thus upgrading the proxies that use this beacon.
 */
contract UpgradeableBeacon is IBeacon, Ownable {
    address private _implementation;
    /**
     * @dev Emitted when the implementation returned by the beacon is changed.
     */
    event Upgraded(address indexed implementation);
    /**
     * @dev Sets the address of the initial implementation, and the deployer account as the owner who can upgrade the
     * beacon.
     */
    constructor(address implementation_) public {
        _setImplementation(implementation_);
    }
    /**
     * @dev Returns the current implementation address.
     */
    function implementation() public view virtual override returns (address) {
        return _implementation;
    }
    /**
     * @dev Upgrades the beacon to a new implementation.
     *
     * Emits an {Upgraded} event.
     *
     * Requirements:
     *
     * - msg.sender must be the owner of the contract.
     * - `newImplementation` must be a contract.
     */
    function upgradeTo(address newImplementation) public virtual onlyOwner {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }
    /**
     * @dev Sets the implementation contract address for this beacon
     *
     * Requirements:
     *
     * - `newImplementation` must be a contract.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "UpgradeableBeacon: implementation is not a contract");
        _implementation = newImplementation;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../utils/ContextUpgradeable.sol";
import "../proxy/Initializable.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal initializer {
        __Context_init_unchained();
        __Ownable_init_unchained();
    }
    function __Ownable_init_unchained() internal initializer {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }
    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }
    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }
    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }
    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
    uint256[49] private __gap;
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "./IBridge.sol";
import "./IMessageProvider.sol";
interface IInbox is IMessageProvider {
    function sendL2Message(bytes calldata messageData) external returns (uint256);
    function sendUnsignedTransaction(
        uint256 maxGas,
        uint256 gasPriceBid,
        uint256 nonce,
        address destAddr,
        uint256 amount,
        bytes calldata data
    ) external returns (uint256);
    function sendContractTransaction(
        uint256 maxGas,
        uint256 gasPriceBid,
        address destAddr,
        uint256 amount,
        bytes calldata data
    ) external returns (uint256);
    function sendL1FundedUnsignedTransaction(
        uint256 maxGas,
        uint256 gasPriceBid,
        uint256 nonce,
        address destAddr,
        bytes calldata data
    ) external payable returns (uint256);
    function sendL1FundedContractTransaction(
        uint256 maxGas,
        uint256 gasPriceBid,
        address destAddr,
        bytes calldata data
    ) external payable returns (uint256);
    function createRetryableTicket(
        address destAddr,
        uint256 arbTxCallValue,
        uint256 maxSubmissionCost,
        address submissionRefundAddress,
        address valueRefundAddress,
        uint256 maxGas,
        uint256 gasPriceBid,
        bytes calldata data
    ) external payable returns (uint256);
    function unsafeCreateRetryableTicket(
        address destAddr,
        uint256 arbTxCallValue,
        uint256 maxSubmissionCost,
        address submissionRefundAddress,
        address valueRefundAddress,
        uint256 maxGas,
        uint256 gasPriceBid,
        bytes calldata data
    ) external payable returns (uint256);
    function depositEth(uint256 maxSubmissionCost) external payable returns (uint256);
    function bridge() external view returns (IBridge);
    function pauseCreateRetryables() external;
    function unpauseCreateRetryables() external;
    function startRewriteAddress() external;
    function stopRewriteAddress() external;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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 {
    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);
    function enqueueDelayedMessage(
        uint8 kind,
        address sender,
        bytes32 messageDataHash
    ) external payable returns (uint256);
    function enqueueSequencerMessage(bytes32 dataHash, uint256 afterDelayedMessagesRead)
        external
        returns (
            uint256 seqMessageIndex,
            bytes32 beforeAcc,
            bytes32 delayedAcc,
            bytes32 acc
        );
    function submitBatchSpendingReport(address batchPoster, bytes32 dataHash)
        external
        returns (uint256 msgNum);
    function executeCall(
        address to,
        uint256 value,
        bytes calldata data
    ) external returns (bool success, bytes memory returnData);
    // These are only callable by the admin
    function setDelayedInbox(address inbox, bool enabled) external;
    function setOutbox(address inbox, bool enabled) external;
    function setSequencerInbox(address _sequencerInbox) external;
    // View functions
    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 delayedInboxAccs(uint256 index) external view returns (bytes32);
    function sequencerInboxAccs(uint256 index) external view returns (bytes32);
    function delayedMessageCount() external view returns (uint256);
    function sequencerMessageCount() external view returns (uint256);
    function rollup() external view returns (IOwnable);
    function acceptFundsFromOldBridge() external payable;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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";
interface IInbox is IDelayedMessageProvider {
    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);
    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 Gas limit and maxFeePerGas should not be set to 1 as that is used to trigger the RetryableData error
    function createRetryableTicket(
        address to,
        uint256 arbTxCallValue,
        uint256 maxSubmissionCost,
        address submissionRefundAddress,
        address valueRefundAddress,
        uint256 gasLimit,
        uint256 maxFeePerGas,
        bytes calldata data
    ) external payable returns (uint256);
    /// @dev Gas limit and maxFeePerGas should not be set to 1 as that is used to trigger the RetryableData error
    function unsafeCreateRetryableTicket(
        address to,
        uint256 arbTxCallValue,
        uint256 maxSubmissionCost,
        address submissionRefundAddress,
        address valueRefundAddress,
        uint256 gasLimit,
        uint256 maxFeePerGas,
        bytes calldata data
    ) external payable returns (uint256);
    function depositEth() external payable returns (uint256);
    /// @notice deprecated in favour of depositEth with no parameters
    function depositEth(uint256 maxSubmissionCost) external payable returns (uint256);
    function bridge() external view returns (IBridge);
    function postUpgradeInit(IBridge _bridge) external;
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
interface IMessageProvider {
    event InboxMessageDelivered(uint256 indexed messageNum, bytes data);
    event InboxMessageDeliveredFromOrigin(uint256 indexed messageNum);
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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/nitro/blob/master/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);
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2019, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
interface ICloneable {
    function isMaster() external view returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./Context.sol";
/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @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.
     */
    constructor () internal {
        _paused = false;
    }
    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }
    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!paused(), "Pausable: paused");
        _;
    }
    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        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());
    }
}
// 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 >=0.6.2 <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
pragma solidity >=0.6.0 <0.8.0;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);
    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);
    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);
    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);
    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);
    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);
    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
import "./Rollup.sol";
import "./facets/IRollupFacets.sol";
import "../bridge/interfaces/IBridge.sol";
import "../bridge/interfaces/IMessageProvider.sol";
import "./INode.sol";
import "../libraries/Cloneable.sol";
contract RollupEventBridge is IMessageProvider, Cloneable {
    uint8 internal constant INITIALIZATION_MSG_TYPE = 11;
    uint8 internal constant ROLLUP_PROTOCOL_EVENT_TYPE = 8;
    uint8 internal constant CREATE_NODE_EVENT = 0;
    uint8 internal constant CONFIRM_NODE_EVENT = 1;
    uint8 internal constant REJECT_NODE_EVENT = 2;
    uint8 internal constant STAKE_CREATED_EVENT = 3;
    IBridge bridge;
    address rollup;
    modifier onlyRollup() {
        require(msg.sender == rollup, "ONLY_ROLLUP");
        _;
    }
    function initialize(address _bridge, address _rollup) external {
        require(rollup == address(0), "ALREADY_INIT");
        bridge = IBridge(_bridge);
        rollup = _rollup;
    }
    function rollupInitialized(
        uint256 confirmPeriodBlocks,
        uint256 avmGasSpeedLimitPerBlock,
        address owner,
        bytes calldata extraConfig
    ) external onlyRollup {
        bytes memory initMsg = abi.encodePacked(
            keccak256("ChallengePeriodEthBlocks"),
            confirmPeriodBlocks,
            keccak256("SpeedLimitPerSecond"),
            avmGasSpeedLimitPerBlock / 100, // convert avm gas to arbgas
            keccak256("ChainOwner"),
            uint256(uint160(bytes20(owner))),
            extraConfig
        );
        uint256 num = bridge.deliverMessageToInbox(
            INITIALIZATION_MSG_TYPE,
            address(0),
            keccak256(initMsg)
        );
        emit InboxMessageDelivered(num, initMsg);
    }
    function nodeCreated(
        uint256 nodeNum,
        uint256 prev,
        uint256 deadline,
        address asserter
    ) external onlyRollup {
        deliverToBridge(
            abi.encodePacked(
                CREATE_NODE_EVENT,
                nodeNum,
                prev,
                block.number,
                deadline,
                uint256(uint160(bytes20(asserter)))
            )
        );
    }
    function nodeConfirmed(uint256 nodeNum) external onlyRollup {
        deliverToBridge(abi.encodePacked(CONFIRM_NODE_EVENT, nodeNum));
    }
    function nodeRejected(uint256 nodeNum) external onlyRollup {
        deliverToBridge(abi.encodePacked(REJECT_NODE_EVENT, nodeNum));
    }
    function stakeCreated(address staker, uint256 nodeNum) external onlyRollup {
        deliverToBridge(
            abi.encodePacked(
                STAKE_CREATED_EVENT,
                uint256(uint160(bytes20(staker))),
                nodeNum,
                block.number
            )
        );
    }
    function deliverToBridge(bytes memory message) private {
        emit InboxMessageDelivered(
            bridge.deliverMessageToInbox(
                ROLLUP_PROTOCOL_EVENT_TYPE,
                msg.sender,
                keccak256(message)
            ),
            message
        );
    }
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
import "./INode.sol";
import "./IRollupCore.sol";
import "./RollupLib.sol";
import "./INodeFactory.sol";
import "./RollupEventBridge.sol";
import "../bridge/interfaces/ISequencerInbox.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
contract RollupCore is IRollupCore {
    using SafeMath for uint256;
    // Stakers become Zombies after losing a challenge
    struct Zombie {
        address stakerAddress;
        uint256 latestStakedNode;
    }
    struct Staker {
        uint256 index;
        uint256 latestStakedNode;
        uint256 amountStaked;
        // currentChallenge is 0 if staker is not in a challenge
        address currentChallenge;
        bool isStaked;
    }
    uint256 private _latestConfirmed;
    uint256 private _firstUnresolvedNode;
    uint256 private _latestNodeCreated;
    uint256 private _lastStakeBlock;
    mapping(uint256 => INode) private _nodes;
    mapping(uint256 => bytes32) private _nodeHashes;
    address payable[] private _stakerList;
    mapping(address => Staker) public override _stakerMap;
    Zombie[] private _zombies;
    mapping(address => uint256) private _withdrawableFunds;
    /**
     * @notice Get the address of the Node contract for the given node
     * @param nodeNum Index of the node
     * @return Address of the Node contract
     */
    function getNode(uint256 nodeNum) public view override returns (INode) {
        return _nodes[nodeNum];
    }
    /**
     * @notice Get the address of the staker at the given index
     * @param stakerNum Index of the staker
     * @return Address of the staker
     */
    function getStakerAddress(uint256 stakerNum) public view override returns (address) {
        return _stakerList[stakerNum];
    }
    /**
     * @notice Check whether the given staker is staked
     * @param staker Staker address to check
     * @return True or False for whether the staker was staked
     */
    function isStaked(address staker) public view override returns (bool) {
        return _stakerMap[staker].isStaked;
    }
    /**
     * @notice Get the latest staked node of the given staker
     * @param staker Staker address to lookup
     * @return Latest node staked of the staker
     */
    function latestStakedNode(address staker) public view override returns (uint256) {
        return _stakerMap[staker].latestStakedNode;
    }
    /**
     * @notice Get the current challenge of the given staker
     * @param staker Staker address to lookup
     * @return Current challenge of the staker
     */
    function currentChallenge(address staker) public view override returns (address) {
        return _stakerMap[staker].currentChallenge;
    }
    /**
     * @notice Get the amount staked of the given staker
     * @param staker Staker address to lookup
     * @return Amount staked of the staker
     */
    function amountStaked(address staker) public view override returns (uint256) {
        return _stakerMap[staker].amountStaked;
    }
    /**
     * @notice Get the original staker address of the zombie at the given index
     * @param zombieNum Index of the zombie to lookup
     * @return Original staker address of the zombie
     */
    function zombieAddress(uint256 zombieNum) public view override returns (address) {
        return _zombies[zombieNum].stakerAddress;
    }
    /**
     * @notice Get Latest node that the given zombie at the given index is staked on
     * @param zombieNum Index of the zombie to lookup
     * @return Latest node that the given zombie is staked on
     */
    function zombieLatestStakedNode(uint256 zombieNum) public view override returns (uint256) {
        return _zombies[zombieNum].latestStakedNode;
    }
    /// @return Current number of un-removed zombies
    function zombieCount() public view override returns (uint256) {
        return _zombies.length;
    }
    function isZombie(address staker) public view override returns (bool) {
        for (uint256 i = 0; i < _zombies.length; i++) {
            if (staker == _zombies[i].stakerAddress) {
                return true;
            }
        }
        return false;
    }
    /**
     * @notice Get the amount of funds withdrawable by the given address
     * @param owner Address to check the funds of
     * @return Amount of funds withdrawable by owner
     */
    function withdrawableFunds(address owner) external view override returns (uint256) {
        return _withdrawableFunds[owner];
    }
    /**
     * @return Index of the first unresolved node
     * @dev If all nodes have been resolved, this will be latestNodeCreated + 1
     */
    function firstUnresolvedNode() public view override returns (uint256) {
        return _firstUnresolvedNode;
    }
    /// @return Index of the latest confirmed node
    function latestConfirmed() public view override returns (uint256) {
        return _latestConfirmed;
    }
    /// @return Index of the latest rollup node created
    function latestNodeCreated() public view override returns (uint256) {
        return _latestNodeCreated;
    }
    /// @return Ethereum block that the most recent stake was created
    function lastStakeBlock() external view override returns (uint256) {
        return _lastStakeBlock;
    }
    /// @return Number of active stakers currently staked
    function stakerCount() public view override returns (uint256) {
        return _stakerList.length;
    }
    /**
     * @notice Initialize the core with an initial node
     * @param initialNode Initial node to start the chain with
     */
    function initializeCore(INode initialNode) internal {
        _nodes[0] = initialNode;
        _firstUnresolvedNode = 1;
    }
    /**
     * @notice React to a new node being created by storing it an incrementing the latest node counter
     * @param node Node that was newly created
     * @param nodeHash The hash of said node
     */
    function nodeCreated(INode node, bytes32 nodeHash) internal {
        _latestNodeCreated++;
        _nodes[_latestNodeCreated] = node;
        _nodeHashes[_latestNodeCreated] = nodeHash;
    }
    /// @return Node hash as of this node number
    function getNodeHash(uint256 index) public view override returns (bytes32) {
        return _nodeHashes[index];
    }
    /// @notice Reject the next unresolved node
    function _rejectNextNode() internal {
        destroyNode(_firstUnresolvedNode);
        _firstUnresolvedNode++;
    }
    /// @notice Confirm the next unresolved node
    function confirmNextNode(
        bytes32 beforeSendAcc,
        bytes calldata sendsData,
        uint256[] calldata sendLengths,
        uint256 afterSendCount,
        bytes32 afterLogAcc,
        uint256 afterLogCount,
        IOutbox outbox,
        RollupEventBridge rollupEventBridge
    ) internal {
        confirmNode(
            _firstUnresolvedNode,
            beforeSendAcc,
            sendsData,
            sendLengths,
            afterSendCount,
            afterLogAcc,
            afterLogCount,
            outbox,
            rollupEventBridge
        );
    }
    function confirmNode(
        uint256 nodeNum,
        bytes32 beforeSendAcc,
        bytes calldata sendsData,
        uint256[] calldata sendLengths,
        uint256 afterSendCount,
        bytes32 afterLogAcc,
        uint256 afterLogCount,
        IOutbox outbox,
        RollupEventBridge rollupEventBridge
    ) internal {
        bytes32 afterSendAcc = RollupLib.feedAccumulator(sendsData, sendLengths, beforeSendAcc);
        INode node = getNode(nodeNum);
        // Authenticate data against node's confirm data pre-image
        require(
            node.confirmData() ==
                RollupLib.confirmHash(
                    beforeSendAcc,
                    afterSendAcc,
                    afterLogAcc,
                    afterSendCount,
                    afterLogCount
                ),
            "CONFIRM_DATA"
        );
        // trusted external call to outbox
        outbox.processOutgoingMessages(sendsData, sendLengths);
        destroyNode(_latestConfirmed);
        _latestConfirmed = nodeNum;
        _firstUnresolvedNode = nodeNum + 1;
        rollupEventBridge.nodeConfirmed(nodeNum);
        emit NodeConfirmed(nodeNum, afterSendAcc, afterSendCount, afterLogAcc, afterLogCount);
    }
    /**
     * @notice Create a new stake at latest confirmed node
     * @param stakerAddress Address of the new staker
     * @param depositAmount Stake amount of the new staker
     */
    function createNewStake(address payable stakerAddress, uint256 depositAmount) internal {
        uint256 stakerIndex = _stakerList.length;
        _stakerList.push(stakerAddress);
        _stakerMap[stakerAddress] = Staker(
            stakerIndex,
            _latestConfirmed,
            depositAmount,
            address(0), // new staker is not in challenge
            true
        );
        _lastStakeBlock = block.number;
        emit UserStakeUpdated(stakerAddress, 0, depositAmount);
    }
    /**
     * @notice Check to see whether the two stakers are in the same challenge
     * @param stakerAddress1 Address of the first staker
     * @param stakerAddress2 Address of the second staker
     * @return Address of the challenge that the two stakers are in
     */
    function inChallenge(address stakerAddress1, address stakerAddress2)
        internal
        view
        returns (address)
    {
        Staker storage staker1 = _stakerMap[stakerAddress1];
        Staker storage staker2 = _stakerMap[stakerAddress2];
        address challenge = staker1.currentChallenge;
        require(challenge != address(0), "NO_CHAL");
        require(challenge == staker2.currentChallenge, "DIFF_IN_CHAL");
        return challenge;
    }
    /**
     * @notice Make the given staker as not being in a challenge
     * @param stakerAddress Address of the staker to remove from a challenge
     */
    function clearChallenge(address stakerAddress) internal {
        Staker storage staker = _stakerMap[stakerAddress];
        staker.currentChallenge = address(0);
    }
    /**
     * @notice Mark both the given stakers as engaged in the challenge
     * @param staker1 Address of the first staker
     * @param staker2 Address of the second staker
     * @param challenge Address of the challenge both stakers are now in
     */
    function challengeStarted(
        address staker1,
        address staker2,
        address challenge
    ) internal {
        _stakerMap[staker1].currentChallenge = challenge;
        _stakerMap[staker2].currentChallenge = challenge;
    }
    /**
     * @notice Add to the stake of the given staker by the given amount
     * @param stakerAddress Address of the staker to increase the stake of
     * @param amountAdded Amount of stake to add to the staker
     */
    function increaseStakeBy(address stakerAddress, uint256 amountAdded) internal {
        Staker storage staker = _stakerMap[stakerAddress];
        uint256 initialStaked = staker.amountStaked;
        uint256 finalStaked = initialStaked.add(amountAdded);
        staker.amountStaked = finalStaked;
        emit UserStakeUpdated(stakerAddress, initialStaked, finalStaked);
    }
    /**
     * @notice Reduce the stake of the given staker to the given target
     * @param stakerAddress Address of the staker to reduce the stake of
     * @param target Amount of stake to leave with the staker
     * @return Amount of value released from the stake
     */
    function reduceStakeTo(address stakerAddress, uint256 target) internal returns (uint256) {
        Staker storage staker = _stakerMap[stakerAddress];
        uint256 current = staker.amountStaked;
        require(target <= current, "TOO_LITTLE_STAKE");
        uint256 amountWithdrawn = current.sub(target);
        staker.amountStaked = target;
        increaseWithdrawableFunds(stakerAddress, amountWithdrawn);
        emit UserStakeUpdated(stakerAddress, current, target);
        return amountWithdrawn;
    }
    /**
     * @notice Remove the given staker and turn them into a zombie
     * @param stakerAddress Address of the staker to remove
     */
    function turnIntoZombie(address stakerAddress) internal {
        Staker storage staker = _stakerMap[stakerAddress];
        _zombies.push(Zombie(stakerAddress, staker.latestStakedNode));
        deleteStaker(stakerAddress);
    }
    /**
     * @notice Update the latest staked node of the zombie at the given index
     * @param zombieNum Index of the zombie to move
     * @param latest New latest node the zombie is staked on
     */
    function zombieUpdateLatestStakedNode(uint256 zombieNum, uint256 latest) internal {
        _zombies[zombieNum].latestStakedNode = latest;
    }
    /**
     * @notice Remove the zombie at the given index
     * @param zombieNum Index of the zombie to remove
     */
    function removeZombie(uint256 zombieNum) internal {
        _zombies[zombieNum] = _zombies[_zombies.length - 1];
        _zombies.pop();
    }
    /**
     * @notice Remove the given staker and return their stake
     * @param stakerAddress Address of the staker withdrawing their stake
     */
    function withdrawStaker(address stakerAddress) internal {
        Staker storage staker = _stakerMap[stakerAddress];
        uint256 initialStaked = staker.amountStaked;
        increaseWithdrawableFunds(stakerAddress, initialStaked);
        deleteStaker(stakerAddress);
        emit UserStakeUpdated(stakerAddress, initialStaked, 0);
    }
    /**
     * @notice Advance the given staker to the given node
     * @param stakerAddress Address of the staker adding their stake
     * @param nodeNum Index of the node to stake on
     */
    function stakeOnNode(
        address stakerAddress,
        uint256 nodeNum,
        uint256 confirmPeriodBlocks
    ) internal {
        Staker storage staker = _stakerMap[stakerAddress];
        INode node = _nodes[nodeNum];
        uint256 newStakerCount = node.addStaker(stakerAddress);
        staker.latestStakedNode = nodeNum;
        if (newStakerCount == 1) {
            INode parent = _nodes[node.prev()];
            parent.newChildConfirmDeadline(block.number.add(confirmPeriodBlocks));
        }
    }
    /**
     * @notice Clear the withdrawable funds for the given address
     * @param owner Address of the account to remove funds from
     * @return Amount of funds removed from account
     */
    function withdrawFunds(address owner) internal returns (uint256) {
        uint256 amount = _withdrawableFunds[owner];
        _withdrawableFunds[owner] = 0;
        emit UserWithdrawableFundsUpdated(owner, amount, 0);
        return amount;
    }
    /**
     * @notice Increase the withdrawable funds for the given address
     * @param owner Address of the account to add withdrawable funds to
     */
    function increaseWithdrawableFunds(address owner, uint256 amount) internal {
        uint256 initialWithdrawable = _withdrawableFunds[owner];
        uint256 finalWithdrawable = initialWithdrawable.add(amount);
        _withdrawableFunds[owner] = finalWithdrawable;
        emit UserWithdrawableFundsUpdated(owner, initialWithdrawable, finalWithdrawable);
    }
    /**
     * @notice Remove the given staker
     * @param stakerAddress Address of the staker to remove
     */
    function deleteStaker(address stakerAddress) private {
        Staker storage staker = _stakerMap[stakerAddress];
        uint256 stakerIndex = staker.index;
        _stakerList[stakerIndex] = _stakerList[_stakerList.length - 1];
        _stakerMap[_stakerList[stakerIndex]].index = stakerIndex;
        _stakerList.pop();
        delete _stakerMap[stakerAddress];
    }
    /**
     * @notice Destroy the given node and clear out its address
     * @param nodeNum Index of the node to remove
     */
    function destroyNode(uint256 nodeNum) internal {
        _nodes[nodeNum].destroy();
        _nodes[nodeNum] = INode(0);
    }
    function nodeDeadline(
        uint256 avmGasSpeedLimitPerBlock,
        uint256 gasUsed,
        uint256 confirmPeriodBlocks,
        INode prevNode
    ) internal view returns (uint256 deadlineBlock) {
        // Set deadline rounding up to the nearest block
        uint256 checkTime = gasUsed.add(avmGasSpeedLimitPerBlock.sub(1)).div(
            avmGasSpeedLimitPerBlock
        );
        deadlineBlock = max(block.number.add(confirmPeriodBlocks), prevNode.deadlineBlock()).add(
            checkTime
        );
        uint256 olderSibling = prevNode.latestChildNumber();
        if (olderSibling != 0) {
            deadlineBlock = max(deadlineBlock, getNode(olderSibling).deadlineBlock());
        }
        return deadlineBlock;
    }
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }
    struct StakeOnNewNodeFrame {
        uint256 currentInboxSize;
        INode node;
        bytes32 executionHash;
        INode prevNode;
        bytes32 lastHash;
        bool hasSibling;
        uint256 deadlineBlock;
        uint256 gasUsed;
        uint256 sequencerBatchEnd;
        bytes32 sequencerBatchAcc;
    }
    struct CreateNodeDataFrame {
        uint256 prevNode;
        uint256 confirmPeriodBlocks;
        uint256 avmGasSpeedLimitPerBlock;
        ISequencerInbox sequencerInbox;
        RollupEventBridge rollupEventBridge;
        INodeFactory nodeFactory;
    }
    uint8 internal constant MAX_SEND_COUNT = 100;
    function createNewNode(
        RollupLib.Assertion memory assertion,
        bytes32[3][2] calldata assertionBytes32Fields,
        uint256[4][2] calldata assertionIntFields,
        bytes calldata sequencerBatchProof,
        CreateNodeDataFrame memory inputDataFrame,
        bytes32 expectedNodeHash
    ) internal returns (bytes32 newNodeHash) {
        StakeOnNewNodeFrame memory memoryFrame;
        {
            // validate data
            memoryFrame.gasUsed = RollupLib.assertionGasUsed(assertion);
            memoryFrame.prevNode = getNode(inputDataFrame.prevNode);
            memoryFrame.currentInboxSize = inputDataFrame.sequencerInbox.messageCount();
            // Make sure the previous state is correct against the node being built on
            require(
                RollupLib.stateHash(assertion.beforeState) == memoryFrame.prevNode.stateHash(),
                "PREV_STATE_HASH"
            );
            // Ensure that the assertion doesn't read past the end of the current inbox
            require(
                assertion.afterState.inboxCount <= memoryFrame.currentInboxSize,
                "INBOX_PAST_END"
            );
            // Insure inbox tip after assertion is included in a sequencer-inbox batch and return inbox acc; this gives replay protection against the state of the inbox
            (memoryFrame.sequencerBatchEnd, memoryFrame.sequencerBatchAcc) = inputDataFrame
                .sequencerInbox
                .proveInboxContainsMessage(sequencerBatchProof, assertion.afterState.inboxCount);
        }
        {
            memoryFrame.executionHash = RollupLib.executionHash(assertion);
            memoryFrame.deadlineBlock = nodeDeadline(
                inputDataFrame.avmGasSpeedLimitPerBlock,
                memoryFrame.gasUsed,
                inputDataFrame.confirmPeriodBlocks,
                memoryFrame.prevNode
            );
            memoryFrame.hasSibling = memoryFrame.prevNode.latestChildNumber() > 0;
            // here we don't use ternacy operator to remain compatible with slither
            if (memoryFrame.hasSibling) {
                memoryFrame.lastHash = getNodeHash(memoryFrame.prevNode.latestChildNumber());
            } else {
                memoryFrame.lastHash = getNodeHash(inputDataFrame.prevNode);
            }
            memoryFrame.node = INode(
                inputDataFrame.nodeFactory.createNode(
                    RollupLib.stateHash(assertion.afterState),
                    RollupLib.challengeRoot(assertion, memoryFrame.executionHash, block.number),
                    RollupLib.confirmHash(assertion),
                    inputDataFrame.prevNode,
                    memoryFrame.deadlineBlock
                )
            );
        }
        {
            uint256 nodeNum = latestNodeCreated() + 1;
            memoryFrame.prevNode.childCreated(nodeNum);
            newNodeHash = RollupLib.nodeHash(
                memoryFrame.hasSibling,
                memoryFrame.lastHash,
                memoryFrame.executionHash,
                memoryFrame.sequencerBatchAcc
            );
            require(newNodeHash == expectedNodeHash, "UNEXPECTED_NODE_HASH");
            nodeCreated(memoryFrame.node, newNodeHash);
            inputDataFrame.rollupEventBridge.nodeCreated(
                nodeNum,
                inputDataFrame.prevNode,
                memoryFrame.deadlineBlock,
                msg.sender
            );
        }
        emit NodeCreated(
            latestNodeCreated(),
            getNodeHash(inputDataFrame.prevNode),
            newNodeHash,
            memoryFrame.executionHash,
            memoryFrame.currentInboxSize,
            memoryFrame.sequencerBatchEnd,
            memoryFrame.sequencerBatchAcc,
            assertionBytes32Fields,
            assertionIntFields
        );
        return newNodeHash;
    }
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
import "../challenge/ChallengeLib.sol";
import "./INode.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
library RollupLib {
    using SafeMath for uint256;
    struct Config {
        bytes32 machineHash;
        uint256 confirmPeriodBlocks;
        uint256 extraChallengeTimeBlocks;
        uint256 avmGasSpeedLimitPerBlock;
        uint256 baseStake;
        address stakeToken;
        address owner;
        address sequencer;
        uint256 sequencerDelayBlocks;
        uint256 sequencerDelaySeconds;
        bytes extraConfig;
    }
    struct ExecutionState {
        uint256 gasUsed;
        bytes32 machineHash;
        uint256 inboxCount;
        uint256 sendCount;
        uint256 logCount;
        bytes32 sendAcc;
        bytes32 logAcc;
        uint256 proposedBlock;
        uint256 inboxMaxCount;
    }
    function stateHash(ExecutionState memory execState) internal pure returns (bytes32) {
        return
            keccak256(
                abi.encodePacked(
                    execState.gasUsed,
                    execState.machineHash,
                    execState.inboxCount,
                    execState.sendCount,
                    execState.logCount,
                    execState.sendAcc,
                    execState.logAcc,
                    execState.proposedBlock,
                    execState.inboxMaxCount
                )
            );
    }
    struct Assertion {
        ExecutionState beforeState;
        ExecutionState afterState;
    }
    function decodeExecutionState(
        bytes32[3] memory bytes32Fields,
        uint256[4] memory intFields,
        uint256 proposedBlock,
        uint256 inboxMaxCount
    ) internal pure returns (ExecutionState memory) {
        return
            ExecutionState(
                intFields[0],
                bytes32Fields[0],
                intFields[1],
                intFields[2],
                intFields[3],
                bytes32Fields[1],
                bytes32Fields[2],
                proposedBlock,
                inboxMaxCount
            );
    }
    function decodeAssertion(
        bytes32[3][2] memory bytes32Fields,
        uint256[4][2] memory intFields,
        uint256 beforeProposedBlock,
        uint256 beforeInboxMaxCount,
        uint256 inboxMaxCount
    ) internal view returns (Assertion memory) {
        return
            Assertion(
                decodeExecutionState(
                    bytes32Fields[0],
                    intFields[0],
                    beforeProposedBlock,
                    beforeInboxMaxCount
                ),
                decodeExecutionState(bytes32Fields[1], intFields[1], block.number, inboxMaxCount)
            );
    }
    function executionStateChallengeHash(ExecutionState memory state)
        internal
        pure
        returns (bytes32)
    {
        return
            ChallengeLib.assertionHash(
                state.gasUsed,
                ChallengeLib.assertionRestHash(
                    state.inboxCount,
                    state.machineHash,
                    state.sendAcc,
                    state.sendCount,
                    state.logAcc,
                    state.logCount
                )
            );
    }
    function executionHash(Assertion memory assertion) internal pure returns (bytes32) {
        return
            ChallengeLib.bisectionChunkHash(
                assertion.beforeState.gasUsed,
                assertion.afterState.gasUsed - assertion.beforeState.gasUsed,
                RollupLib.executionStateChallengeHash(assertion.beforeState),
                RollupLib.executionStateChallengeHash(assertion.afterState)
            );
    }
    function assertionGasUsed(RollupLib.Assertion memory assertion)
        internal
        pure
        returns (uint256)
    {
        return assertion.afterState.gasUsed.sub(assertion.beforeState.gasUsed);
    }
    function challengeRoot(
        Assertion memory assertion,
        bytes32 assertionExecHash,
        uint256 blockProposed
    ) internal pure returns (bytes32) {
        return challengeRootHash(assertionExecHash, blockProposed, assertion.afterState.inboxCount);
    }
    function challengeRootHash(
        bytes32 execution,
        uint256 proposedTime,
        uint256 maxMessageCount
    ) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(execution, proposedTime, maxMessageCount));
    }
    function confirmHash(Assertion memory assertion) internal pure returns (bytes32) {
        return
            confirmHash(
                assertion.beforeState.sendAcc,
                assertion.afterState.sendAcc,
                assertion.afterState.logAcc,
                assertion.afterState.sendCount,
                assertion.afterState.logCount
            );
    }
    function confirmHash(
        bytes32 beforeSendAcc,
        bytes32 afterSendAcc,
        bytes32 afterLogAcc,
        uint256 afterSendCount,
        uint256 afterLogCount
    ) internal pure returns (bytes32) {
        return
            keccak256(
                abi.encodePacked(
                    beforeSendAcc,
                    afterSendAcc,
                    afterSendCount,
                    afterLogAcc,
                    afterLogCount
                )
            );
    }
    function feedAccumulator(
        bytes memory messageData,
        uint256[] memory messageLengths,
        bytes32 beforeAcc
    ) internal pure returns (bytes32) {
        uint256 offset = 0;
        uint256 messageCount = messageLengths.length;
        uint256 dataLength = messageData.length;
        bytes32 messageAcc = beforeAcc;
        for (uint256 i = 0; i < messageCount; i++) {
            uint256 messageLength = messageLengths[i];
            require(offset + messageLength <= dataLength, "DATA_OVERRUN");
            bytes32 messageHash;
            assembly {
                messageHash := keccak256(add(messageData, add(offset, 32)), messageLength)
            }
            messageAcc = keccak256(abi.encodePacked(messageAcc, messageHash));
            offset += messageLength;
        }
        require(offset == dataLength, "DATA_LENGTH");
        return messageAcc;
    }
    function nodeHash(
        bool hasSibling,
        bytes32 lastHash,
        bytes32 assertionExecHash,
        bytes32 inboxAcc
    ) internal pure returns (bytes32) {
        uint8 hasSiblingInt = hasSibling ? 1 : 0;
        return keccak256(abi.encodePacked(hasSiblingInt, lastHash, assertionExecHash, inboxAcc));
    }
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
interface INode {
    function initialize(
        address _rollup,
        bytes32 _stateHash,
        bytes32 _challengeHash,
        bytes32 _confirmData,
        uint256 _prev,
        uint256 _deadlineBlock
    ) external;
    function destroy() external;
    function addStaker(address staker) external returns (uint256);
    function removeStaker(address staker) external;
    function childCreated(uint256) external;
    function newChildConfirmDeadline(uint256 deadline) external;
    function stateHash() external view returns (bytes32);
    function challengeHash() external view returns (bytes32);
    function confirmData() external view returns (bytes32);
    function prev() external view returns (uint256);
    function deadlineBlock() external view returns (uint256);
    function noChildConfirmedBeforeBlock() external view returns (uint256);
    function stakerCount() external view returns (uint256);
    function stakers(address staker) external view returns (bool);
    function firstChildBlock() external view returns (uint256);
    function latestChildNumber() external view returns (uint256);
    function requirePastDeadline() external view;
    function requirePastChildConfirmDeadline() external view;
    function isNitroReady() external pure returns (uint256);
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
interface INodeFactory {
    function createNode(
        bytes32 _stateHash,
        bytes32 _challengeHash,
        bytes32 _confirmData,
        uint256 _prev,
        uint256 _deadlineBlock
    ) external returns (address);
    function beacon() external view returns (address);
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "../bridge/interfaces/IBridge.sol";
import "../bridge/interfaces/ISequencerInbox.sol";
import "../arch/IOneStepProof.sol";
interface IChallenge {
    function initializeChallenge(
        IOneStepProof[] calldata _executors,
        address _resultReceiver,
        bytes32 _executionHash,
        uint256 _maxMessageCount,
        address _asserter,
        address _challenger,
        uint256 _asserterTimeLeft,
        uint256 _challengerTimeLeft,
        ISequencerInbox _sequencerBridge,
        IBridge _delayedBridge
    ) external;
    function currentResponderTimeLeft() external view returns (uint256);
    function lastMoveBlock() external view returns (uint256);
    function timeout() external;
    function asserter() external view returns (address);
    function challenger() external view returns (address);
    function clearChallenge() external;
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2019-2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "../bridge/interfaces/IBridge.sol";
import "../bridge/interfaces/ISequencerInbox.sol";
interface IChallengeFactory {
    function createChallenge(
        address _resultReceiver,
        bytes32 _executionHash,
        uint256 _maxMessageCount,
        address _asserter,
        address _challenger,
        uint256 _asserterTimeLeft,
        uint256 _challengerTimeLeft,
        ISequencerInbox _sequencerBridge,
        IBridge _delayedBridge
    ) external returns (address);
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
library ProxyUtil {
    function getProxyAdmin() internal view returns (address admin) {
        // https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.4.0/contracts/proxy/TransparentUpgradeableProxy.sol#L48
        // Storage slot with the admin of the proxy contract.
        // This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
        bytes32 slot = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
        assembly {
            admin := sload(slot)
        }
    }
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "../INode.sol";
import "../../bridge/interfaces/IOutbox.sol";
interface IRollupUser {
    function initialize(address _stakeToken) external;
    function completeChallenge(address winningStaker, address losingStaker) external;
    function returnOldDeposit(address stakerAddress) external;
    function requireUnresolved(uint256 nodeNum) external view;
    function requireUnresolvedExists() external view;
    function countStakedZombies(INode node) external view returns (uint256);
}
interface IRollupAdmin {
    event OwnerFunctionCalled(uint256 indexed id);
    /**
     * @notice Add a contract authorized to put messages into this rollup's inbox
     * @param _outbox Outbox contract to add
     */
    function setOutbox(IOutbox _outbox) external;
    /**
     * @notice Disable an old outbox from interacting with the bridge
     * @param _outbox Outbox contract to remove
     */
    function removeOldOutbox(address _outbox) external;
    /**
     * @notice Enable or disable an inbox contract
     * @param _inbox Inbox contract to add or remove
     * @param _enabled New status of inbox
     */
    function setInbox(address _inbox, bool _enabled) external;
    /**
     * @notice Pause interaction with the rollup contract
     */
    function pause() external;
    /**
     * @notice Resume interaction with the rollup contract
     */
    function resume() external;
    /**
     * @notice Set the addresses of rollup logic facets called
     * @param newAdminFacet address of logic that owner of rollup calls
     * @param newUserFacet ddress of logic that user of rollup calls
     */
    function setFacets(address newAdminFacet, address newUserFacet) external;
    /**
     * @notice Set the addresses of the validator whitelist
     * @dev It is expected that both arrays are same length, and validator at
     * position i corresponds to the value at position i
     * @param _validator addresses to set in the whitelist
     * @param _val value to set in the whitelist for corresponding address
     */
    function setValidator(address[] memory _validator, bool[] memory _val) external;
    /**
     * @notice Set a new owner address for the rollup
     * @param newOwner address of new rollup owner
     */
    function setOwner(address newOwner) external;
    /**
     * @notice Set minimum assertion period for the rollup
     * @param newPeriod new minimum period for assertions
     */
    function setMinimumAssertionPeriod(uint256 newPeriod) external;
    /**
     * @notice Set number of blocks until a node is considered confirmed
     * @param newConfirmPeriod new number of blocks until a node is confirmed
     */
    function setConfirmPeriodBlocks(uint256 newConfirmPeriod) external;
    /**
     * @notice Set number of extra blocks after a challenge
     * @param newExtraTimeBlocks new number of blocks
     */
    function setExtraChallengeTimeBlocks(uint256 newExtraTimeBlocks) external;
    /**
     * @notice Set speed limit per block
     * @param newAvmGasSpeedLimitPerBlock maximum avmgas to be used per block
     */
    function setAvmGasSpeedLimitPerBlock(uint256 newAvmGasSpeedLimitPerBlock) external;
    /**
     * @notice Set base stake required for an assertion
     * @param newBaseStake maximum avmgas to be used per block
     */
    function setBaseStake(uint256 newBaseStake) external;
    /**
     * @notice Set the token used for stake, where address(0) == eth
     * @dev Before changing the base stake token, you might need to change the
     * implementation of the Rollup User facet!
     * @param newStakeToken address of token used for staking
     */
    function setStakeToken(address newStakeToken) external;
    /**
     * @notice Set max delay for sequencer inbox
     * @param newSequencerInboxMaxDelayBlocks max number of blocks
     * @param newSequencerInboxMaxDelaySeconds max number of seconds
     */
    function setSequencerInboxMaxDelay(
        uint256 newSequencerInboxMaxDelayBlocks,
        uint256 newSequencerInboxMaxDelaySeconds
    ) external;
    /**
     * @notice Set execution bisection degree
     * @param newChallengeExecutionBisectionDegree execution bisection degree
     */
    function setChallengeExecutionBisectionDegree(uint256 newChallengeExecutionBisectionDegree)
        external;
    /**
     * @notice Updates a whitelist address for its consumers
     * @dev setting the newWhitelist to address(0) disables it for consumers
     * @param whitelist old whitelist to be deprecated
     * @param newWhitelist new whitelist to be used
     * @param targets whitelist consumers to be triggered
     */
    function updateWhitelistConsumers(
        address whitelist,
        address newWhitelist,
        address[] memory targets
    ) external;
    /**
     * @notice Updates a whitelist's entries
     * @dev user at position i will be assigned value i
     * @param whitelist whitelist to be updated
     * @param user users to be updated in the whitelist
     * @param val if user is or not allowed in the whitelist
     */
    function setWhitelistEntries(
        address whitelist,
        address[] memory user,
        bool[] memory val
    ) external;
    /**
     * @notice Updates whether an address is a sequencer at the sequencer inbox
     * @param newSequencer address to be modified
     * @param isSequencer whether this address should be authorized as a sequencer
     */
    function setIsSequencer(address newSequencer, bool isSequencer) external;
    /**
     * @notice Upgrades the implementation of a beacon controlled by the rollup
     * @param beacon address of beacon to be upgraded
     * @param newImplementation new address of implementation
     */
    function upgradeBeacon(address beacon, address newImplementation) external;
    function forceResolveChallenge(address[] memory stackerA, address[] memory stackerB) external;
    function forceRefundStaker(address[] memory stacker) external;
    function forceCreateNode(
        bytes32 expectedNodeHash,
        bytes32[3][2] calldata assertionBytes32Fields,
        uint256[4][2] calldata assertionIntFields,
        bytes calldata sequencerBatchProof,
        uint256 beforeProposedBlock,
        uint256 beforeInboxMaxCount,
        uint256 prevNode
    ) external;
    function forceConfirmNode(
        uint256 nodeNum,
        bytes32 beforeSendAcc,
        bytes calldata sendsData,
        uint256[] calldata sendLengths,
        uint256 afterSendCount,
        bytes32 afterLogAcc,
        uint256 afterLogCount
    ) external;
}
interface INitroRollupCore {
    function inbox() external view returns (address);
    function owner() external view returns (address);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "./INode.sol";
interface IRollupCore {
    function _stakerMap(address stakerAddress)
        external
        view
        returns (
            uint256,
            uint256,
            uint256,
            address,
            bool
        );
    event RollupCreated(bytes32 machineHash);
    event NodeCreated(
        uint256 indexed nodeNum,
        bytes32 indexed parentNodeHash,
        bytes32 nodeHash,
        bytes32 executionHash,
        uint256 inboxMaxCount,
        uint256 afterInboxBatchEndCount,
        bytes32 afterInboxBatchAcc,
        bytes32[3][2] assertionBytes32Fields,
        uint256[4][2] assertionIntFields
    );
    event NodeConfirmed(
        uint256 indexed nodeNum,
        bytes32 afterSendAcc,
        uint256 afterSendCount,
        bytes32 afterLogAcc,
        uint256 afterLogCount
    );
    event NodeRejected(uint256 indexed nodeNum);
    event RollupChallengeStarted(
        address indexed challengeContract,
        address asserter,
        address challenger,
        uint256 challengedNode
    );
    event UserStakeUpdated(address indexed user, uint256 initialBalance, uint256 finalBalance);
    event UserWithdrawableFundsUpdated(
        address indexed user,
        uint256 initialBalance,
        uint256 finalBalance
    );
    function getNode(uint256 nodeNum) external view returns (INode);
    /**
     * @notice Get the address of the staker at the given index
     * @param stakerNum Index of the staker
     * @return Address of the staker
     */
    function getStakerAddress(uint256 stakerNum) external view returns (address);
    /**
     * @notice Check whether the given staker is staked
     * @param staker Staker address to check
     * @return True or False for whether the staker was staked
     */
    function isStaked(address staker) external view returns (bool);
    /**
     * @notice Get the latest staked node of the given staker
     * @param staker Staker address to lookup
     * @return Latest node staked of the staker
     */
    function latestStakedNode(address staker) external view returns (uint256);
    /**
     * @notice Get the current challenge of the given staker
     * @param staker Staker address to lookup
     * @return Current challenge of the staker
     */
    function currentChallenge(address staker) external view returns (address);
    /**
     * @notice Get the amount staked of the given staker
     * @param staker Staker address to lookup
     * @return Amount staked of the staker
     */
    function amountStaked(address staker) external view returns (uint256);
    /**
     * @notice Get the original staker address of the zombie at the given index
     * @param zombieNum Index of the zombie to lookup
     * @return Original staker address of the zombie
     */
    function zombieAddress(uint256 zombieNum) external view returns (address);
    /**
     * @notice Get Latest node that the given zombie at the given index is staked on
     * @param zombieNum Index of the zombie to lookup
     * @return Latest node that the given zombie is staked on
     */
    function zombieLatestStakedNode(uint256 zombieNum) external view returns (uint256);
    /// @return Current number of un-removed zombies
    function zombieCount() external view returns (uint256);
    function isZombie(address staker) external view returns (bool);
    /**
     * @notice Get the amount of funds withdrawable by the given address
     * @param owner Address to check the funds of
     * @return Amount of funds withdrawable by owner
     */
    function withdrawableFunds(address owner) external view returns (uint256);
    /**
     * @return Index of the first unresolved node
     * @dev If all nodes have been resolved, this will be latestNodeCreated + 1
     */
    function firstUnresolvedNode() external view returns (uint256);
    /// @return Index of the latest confirmed node
    function latestConfirmed() external view returns (uint256);
    /// @return Index of the latest rollup node created
    function latestNodeCreated() external view returns (uint256);
    /// @return Ethereum block that the most recent stake was created
    function lastStakeBlock() external view returns (uint256);
    /// @return Number of active stakers currently staked
    function stakerCount() external view returns (uint256);
    /// @return Node hash as of this node number
    function getNodeHash(uint256 index) external view returns (bytes32);
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
interface ISequencerInbox {
    event SequencerBatchDelivered(
        uint256 indexed firstMessageNum,
        bytes32 indexed beforeAcc,
        uint256 newMessageCount,
        bytes32 afterAcc,
        bytes transactions,
        uint256[] lengths,
        uint256[] sectionsMetadata,
        uint256 seqBatchIndex,
        address sequencer
    );
    event SequencerBatchDeliveredFromOrigin(
        uint256 indexed firstMessageNum,
        bytes32 indexed beforeAcc,
        uint256 newMessageCount,
        bytes32 afterAcc,
        uint256 seqBatchIndex
    );
    event DelayedInboxForced(
        uint256 indexed firstMessageNum,
        bytes32 indexed beforeAcc,
        uint256 newMessageCount,
        uint256 totalDelayedMessagesRead,
        bytes32[2] afterAccAndDelayed,
        uint256 seqBatchIndex
    );
    /// @notice DEPRECATED - look at IsSequencerUpdated for new updates
    // event SequencerAddressUpdated(address newAddress);
    event IsSequencerUpdated(address addr, bool isSequencer);
    event MaxDelayUpdated(uint256 newMaxDelayBlocks, uint256 newMaxDelaySeconds);
    event ShutdownForNitroSet(bool shutdown);
    /// @notice DEPRECATED - look at MaxDelayUpdated for new updates
    // event MaxDelayBlocksUpdated(uint256 newValue);
    /// @notice DEPRECATED - look at MaxDelayUpdated for new updates
    // event MaxDelaySecondsUpdated(uint256 newValue);
    function setMaxDelay(uint256 newMaxDelayBlocks, uint256 newMaxDelaySeconds) external;
    function setIsSequencer(address addr, bool isSequencer) external;
    function messageCount() external view returns (uint256);
    function maxDelayBlocks() external view returns (uint256);
    function maxDelaySeconds() external view returns (uint256);
    function inboxAccs(uint256 index) external view returns (bytes32);
    function getInboxAccsLength() external view returns (uint256);
    function proveInboxContainsMessage(bytes calldata proof, uint256 inboxCount)
        external
        view
        returns (uint256, bytes32);
    /// @notice DEPRECATED - use isSequencer instead
    function sequencer() external view returns (address);
    function isSequencer(address seq) external view returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2019-2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.6.11;
import "../libraries/MerkleLib.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
library ChallengeLib {
    using SafeMath for uint256;
    function firstSegmentSize(uint256 totalCount, uint256 bisectionCount)
        internal
        pure
        returns (uint256)
    {
        return totalCount / bisectionCount + (totalCount % bisectionCount);
    }
    function otherSegmentSize(uint256 totalCount, uint256 bisectionCount)
        internal
        pure
        returns (uint256)
    {
        return totalCount / bisectionCount;
    }
    function bisectionChunkHash(
        uint256 _segmentStart,
        uint256 _segmentLength,
        bytes32 _startHash,
        bytes32 _endHash
    ) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(_segmentStart, _segmentLength, _startHash, _endHash));
    }
    function assertionHash(uint256 _avmGasUsed, bytes32 _restHash) internal pure returns (bytes32) {
        // Note: make sure this doesn't return Challenge.UNREACHABLE_ASSERTION (currently 0)
        return keccak256(abi.encodePacked(_avmGasUsed, _restHash));
    }
    function assertionRestHash(
        uint256 _totalMessagesRead,
        bytes32 _machineState,
        bytes32 _sendAcc,
        uint256 _sendCount,
        bytes32 _logAcc,
        uint256 _logCount
    ) internal pure returns (bytes32) {
        return
            keccak256(
                abi.encodePacked(
                    _totalMessagesRead,
                    _machineState,
                    _sendAcc,
                    _sendCount,
                    _logAcc,
                    _logCount
                )
            );
    }
    function updatedBisectionRoot(
        bytes32[] memory _chainHashes,
        uint256 _challengedSegmentStart,
        uint256 _challengedSegmentLength
    ) internal pure returns (bytes32) {
        uint256 bisectionCount = _chainHashes.length - 1;
        bytes32[] memory hashes = new bytes32[](bisectionCount);
        uint256 chunkSize = ChallengeLib.firstSegmentSize(_challengedSegmentLength, bisectionCount);
        uint256 segmentStart = _challengedSegmentStart;
        hashes[0] = ChallengeLib.bisectionChunkHash(
            segmentStart,
            chunkSize,
            _chainHashes[0],
            _chainHashes[1]
        );
        segmentStart = segmentStart.add(chunkSize);
        chunkSize = ChallengeLib.otherSegmentSize(_challengedSegmentLength, bisectionCount);
        for (uint256 i = 1; i < bisectionCount; i++) {
            hashes[i] = ChallengeLib.bisectionChunkHash(
                segmentStart,
                chunkSize,
                _chainHashes[i],
                _chainHashes[i + 1]
            );
            segmentStart = segmentStart.add(chunkSize);
        }
        return MerkleLib.generateRoot(hashes);
    }
    function verifySegmentProof(
        bytes32 challengeState,
        bytes32 item,
        bytes32[] calldata _merkleNodes,
        uint256 _merkleRoute
    ) internal pure returns (bool) {
        return challengeState == MerkleLib.calculateRoot(_merkleNodes, _merkleRoute, item);
    }
}
// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright 2020, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "../bridge/interfaces/IBridge.sol";
import "../bridge/interfaces/ISequencerInbox.sol";
interface IOneStepProof {
    // Bridges is sequencer bridge then delayed bridge
    function executeStep(
        address[2] calldata bridges,
        uint256 initialMessagesRead,
        bytes32[2] calldata accs,
        bytes calldata proof,
        bytes calldata bproof
    )
        external
        view
        returns (
            uint64 gas,
            uint256 afterMessagesRead,
            bytes32[4] memory fields
        );
    function executeStepDebug(
        address[2] calldata bridges,
        uint256 initialMessagesRead,
        bytes32[2] calldata accs,
        bytes calldata proof,
        bytes calldata bproof
    ) external view returns (string memory startMachine, string memory afterMachine);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <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
pragma solidity >=0.6.0 <0.8.0;
import "../utils/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }
    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }
    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }
    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }
    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../proxy/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 GSN 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 initializer {
        __Context_init_unchained();
    }
    function __Context_init_unchained() internal initializer {
    }
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
    uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
// solhint-disable-next-line compiler-version
pragma solidity >=0.4.24 <0.8.0;
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 a proxied contract can't have 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.
 *
 * 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 {UpgradeableProxy-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.
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;
    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;
    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        require(_initializing || _isConstructor() || !_initialized, "Initializable: contract is already initialized");
        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
        }
    }
    /// @dev Returns true if and only if the function is running in the constructor
    function _isConstructor() private view returns (bool) {
        return !AddressUpgradeable.isContract(address(this));
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
 * @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
     * ====
     */
    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);
    }
    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);
            }
        }
    }
}

// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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.
 * It is also the ETH escrow for value sent with these 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.
 */
contract Bridge 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 private _activeOutbox;
    /// @inheritdoc IBridge
    bytes32[] public delayedInboxAccs;
    /// @inheritdoc IBridge
    bytes32[] public sequencerInboxAccs;
    IOwnable public rollup;
    address public sequencerInbox;
    uint256 public override sequencerReportedSubMessageCount;
    address private constant EMPTY_ACTIVEOUTBOX = address(type(uint160).max);
    function initialize(IOwnable rollup_) external initializer onlyDelegated {
        _activeOutbox = EMPTY_ACTIVEOUTBOX;
        rollup = rollup_;
    }
    modifier onlyRollupOrOwner() {
        if (msg.sender != address(rollup)) {
            address rollupOwner = rollup.owner();
            if (msg.sender != rollupOwner) {
                revert NotRollupOrOwner(msg.sender, address(rollup), rollupOwner);
            }
        }
        _;
    }
    /// @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) external view returns (bool) {
        return allowedDelayedInboxesMap[inbox].allowed;
    }
    function allowedOutboxes(address outbox) external 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 (sequencerInboxAccs.length > 0) {
            beforeAcc = sequencerInboxAccs[sequencerInboxAccs.length - 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
            );
    }
    /// @inheritdoc IBridge
    function enqueueDelayedMessage(
        uint8 kind,
        address sender,
        bytes32 messageDataHash
    ) external payable returns (uint256) {
        if (!allowedDelayedInboxesMap[msg.sender].allowed) revert NotDelayedInbox(msg.sender);
        return
            addMessageToDelayedAccumulator(
                kind,
                sender,
                uint64(block.number),
                uint64(block.timestamp), // solhint-disable-line not-rely-on-time
                block.basefee,
                messageDataHash
            );
    }
    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;
    }
    function executeCall(
        address to,
        uint256 value,
        bytes calldata data
    ) external returns (bool success, bytes memory returnData) {
        if (!allowedOutboxesMap[msg.sender].allowed) 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
        // solhint-disable-next-line avoid-low-level-calls
        (success, returnData) = to.call{value: 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) || (!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) || (!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 {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.0;
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.
 *
 * 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 initialize the implementation contract, you can either invoke the
 * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() initializer {}
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;
    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;
    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        // If the contract is initializing we ignore whether _initialized is set in order to support multiple
        // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the
        // contract may have been reentered.
        require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized");
        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
        }
    }
    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} modifier, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }
    function _isConstructor() private view returns (bool) {
        return !AddressUpgradeable.isContract(address(this));
    }
}
// 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 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
                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/nitro/blob/master/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.4;
/// @dev Init was already called
error AlreadyInit();
/// Init was called with param set to zero that must be nonzero
error HadZeroInit();
/// @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);
// Inbox Errors
/// @dev The contract is paused, so cannot be paused
error AlreadyPaused();
/// @dev The contract is unpaused, so cannot be unpaused
error AlreadyUnpaused();
/// @dev The contract is paused
error Paused();
/// @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
);
// 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 Force include can only read messages more seconds old than the delay period
error ForceIncludeTimeTooSoon();
/// @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 The batch data has the inbox authenticated bit set, but the batch data was not authenticated by the inbox
error DataNotAuthenticated();
/// @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);
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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 {
    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);
    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);
    /**
     * @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);
    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;
    // ---------- initializer ----------
    function initialize(IOwnable rollup_) external;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
library Messages {
    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));
    }
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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/nitro/blob/master/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/nitro/blob/master/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);
}

// 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);
            }
        }
    }
}

// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.4;
import {
    AlreadyInit,
    NotOrigin,
    DataTooLarge,
    AlreadyPaused,
    AlreadyUnpaused,
    Paused,
    InsufficientValue,
    InsufficientSubmissionCost,
    NotAllowedOrigin,
    RetryableData,
    NotRollupOrOwner,
    L1Forked,
    NotForked,
    GasLimitTooLarge
} from "../libraries/Error.sol";
import "./IInbox.sol";
import "./ISequencerInbox.sol";
import "./IBridge.sol";
import "./Messages.sol";
import "../libraries/AddressAliasHelper.sol";
import "../libraries/DelegateCallAware.sol";
import {
    L2_MSG,
    L1MessageType_L2FundedByL1,
    L1MessageType_submitRetryableTx,
    L1MessageType_ethDeposit,
    L2MessageType_unsignedEOATx,
    L2MessageType_unsignedContractTx
} from "../libraries/MessageTypes.sol";
import {MAX_DATA_SIZE, UNISWAP_L1_TIMELOCK, UNISWAP_L2_FACTORY} from "../libraries/Constants.sol";
import "../precompiles/ArbSys.sol";
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.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 DelegateCallAware, PausableUpgradeable, IInbox {
    IBridge public bridge;
    ISequencerInbox public sequencerInbox;
    /// ------------------------------------ allow list start ------------------------------------ ///
    bool public allowListEnabled;
    mapping(address => bool) public isAllowed;
    event AllowListAddressSet(address indexed user, bool val);
    event AllowListEnabledUpdated(bool isEnabled);
    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]);
        }
    }
    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);
            }
        }
        _;
    }
    uint256 internal immutable deployTimeChainId = block.chainid;
    function _chainIdChanged() internal view returns (bool) {
        return deployTimeChainId != block.chainid;
    }
    /// @inheritdoc IInbox
    function pause() external onlyRollupOrOwner {
        _pause();
    }
    /// @inheritdoc IInbox
    function unpause() external onlyRollupOrOwner {
        _unpause();
    }
    function initialize(IBridge _bridge, ISequencerInbox _sequencerInbox)
        external
        initializer
        onlyDelegated
    {
        bridge = _bridge;
        sequencerInbox = _sequencerInbox;
        allowListEnabled = false;
        __Pausable_init();
    }
    /// @inheritdoc IInbox
    function postUpgradeInit(IBridge) external onlyDelegated onlyProxyOwner {}
    /// @inheritdoc IInbox
    function sendL2MessageFromOrigin(bytes calldata messageData)
        external
        whenNotPaused
        onlyAllowed
        returns (uint256)
    {
        if (_chainIdChanged()) revert L1Forked();
        // solhint-disable-next-line avoid-tx-origin
        if (msg.sender != tx.origin) revert NotOrigin();
        if (messageData.length > MAX_DATA_SIZE)
            revert DataTooLarge(messageData.length, MAX_DATA_SIZE);
        uint256 msgNum = deliverToBridge(L2_MSG, msg.sender, keccak256(messageData));
        emit InboxMessageDeliveredFromOrigin(msgNum);
        return msgNum;
    }
    /// @inheritdoc IInbox
    function sendL2Message(bytes calldata messageData)
        external
        whenNotPaused
        onlyAllowed
        returns (uint256)
    {
        if (_chainIdChanged()) revert L1Forked();
        return _deliverMessage(L2_MSG, msg.sender, messageData);
    }
    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
                )
            );
    }
    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
                )
            );
    }
    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
                )
            );
    }
    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
                )
            );
    }
    /// @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();
        // 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
                )
            );
    }
    /// @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();
        // 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
                )
            );
    }
    /// @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();
        // 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.encode(ArbSys.withdrawEth.selector, withdrawTo)
                )
            );
    }
    /// @inheritdoc IInbox
    function calculateRetryableSubmissionFee(uint256 dataLength, uint256 baseFee)
        public
        view
        returns (uint256)
    {
        // Use current block basefee if baseFee parameter is 0
        return (1400 + 6 * dataLength) * (baseFee == 0 ? block.basefee : baseFee);
    }
    /// @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)
            );
    }
    /// @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 gasLimit x maxFeePerGas - execution cost gets credited here on L2 balance
     * @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) {
        // ensure the user's deposit alone will make submission succeed
        if (msg.value < (maxSubmissionCost + l2CallValue + gasLimit * maxFeePerGas)) {
            revert InsufficientValue(
                maxSubmissionCost + l2CallValue + gasLimit * maxFeePerGas,
                msg.value
            );
        }
        // 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,
                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) {
        // 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,
                msg.value,
                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,
                    msg.value,
                    maxSubmissionCost,
                    uint256(uint160(excessFeeRefundAddress)),
                    uint256(uint160(callValueRefundAddress)),
                    gasLimit,
                    maxFeePerGas,
                    data.length,
                    data
                )
            );
    }
    /// @notice This is an one-time-exception to resolve a misconfiguration of Uniswap Arbitrum deployment
    ///         Only the Uniswap L1 Timelock may call this function and it is allowed to create a crosschain
    ///         retryable ticket without address aliasing. More info here:
    ///         https://gov.uniswap.org/t/consensus-check-fix-the-cross-chain-messaging-bridge-on-arbitrum/18547
    /// @dev    This function will be removed in future releases
    function uniswapCreateRetryableTicket(
        address to,
        uint256 l2CallValue,
        uint256 maxSubmissionCost,
        address excessFeeRefundAddress,
        address callValueRefundAddress,
        uint256 gasLimit,
        uint256 maxFeePerGas,
        bytes calldata data
    ) external payable whenNotPaused onlyAllowed returns (uint256) {
        // this can only be called by UNISWAP_L1_TIMELOCK
        require(msg.sender == UNISWAP_L1_TIMELOCK, "NOT_UNISWAP_L1_TIMELOCK");
        // the retryable can only call UNISWAP_L2_FACTORY
        require(to == UNISWAP_L2_FACTORY, "NOT_TO_UNISWAP_L2_FACTORY");
        // ensure the user's deposit alone will make submission succeed
        if (msg.value < (maxSubmissionCost + l2CallValue + gasLimit * maxFeePerGas)) {
            revert InsufficientValue(
                maxSubmissionCost + l2CallValue + gasLimit * maxFeePerGas,
                msg.value
            );
        }
        // 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 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,
                msg.value,
                maxSubmissionCost,
                excessFeeRefundAddress,
                callValueRefundAddress,
                gasLimit,
                maxFeePerGas,
                data
            );
        uint256 submissionFee = calculateRetryableSubmissionFee(data.length, block.basefee);
        if (maxSubmissionCost < submissionFee)
            revert InsufficientSubmissionCost(submissionFee, maxSubmissionCost);
        return
            _deliverMessage(
                L1MessageType_submitRetryableTx,
                AddressAliasHelper.undoL1ToL2Alias(msg.sender),
                abi.encodePacked(
                    uint256(uint160(to)),
                    l2CallValue,
                    msg.value,
                    maxSubmissionCost,
                    uint256(uint160(excessFeeRefundAddress)),
                    uint256(uint160(callValueRefundAddress)),
                    gasLimit,
                    maxFeePerGas,
                    data.length,
                    data
                )
            );
    }
    function _deliverMessage(
        uint8 _kind,
        address _sender,
        bytes memory _messageData
    ) internal returns (uint256) {
        if (_messageData.length > MAX_DATA_SIZE)
            revert DataTooLarge(_messageData.length, MAX_DATA_SIZE);
        uint256 msgNum = deliverToBridge(_kind, _sender, keccak256(_messageData));
        emit InboxMessageDelivered(msgNum, _messageData);
        return msgNum;
    }
    function deliverToBridge(
        uint8 kind,
        address sender,
        bytes32 messageDataHash
    ) internal returns (uint256) {
        return
            bridge.enqueueDelayedMessage{value: msg.value}(
                kind,
                AddressAliasHelper.applyL1ToL2Alias(sender),
                messageDataHash
            );
    }
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.4;
/// @dev Init was already called
error AlreadyInit();
/// Init was called with param set to zero that must be nonzero
error HadZeroInit();
/// @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);
// Inbox Errors
/// @dev The contract is paused, so cannot be paused
error AlreadyPaused();
/// @dev The contract is unpaused, so cannot be unpaused
error AlreadyUnpaused();
/// @dev The contract is paused
error Paused();
/// @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();
// 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 Force include can only read messages more seconds old than the delay period
error ForceIncludeTimeTooSoon();
/// @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 The batch data has the inbox authenticated bit set, but the batch data was not authenticated by the inbox
error DataNotAuthenticated();
/// @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);
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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 IInbox is IDelayedMessageProvider {
    function bridge() external view returns (IBridge);
    function sequencerInbox() external view returns (ISequencerInbox);
    /**
     * @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
     *      This method will be disabled upon L1 fork to prevent replay attacks on L2
     * @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
     *      This method will be disabled upon L1 fork to prevent replay attacks on L2
     * @param messageData Data of the message being sent
     */
    function sendL2Message(bytes calldata messageData) external returns (uint256);
    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);
    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);
    /**
     * @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 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);
    /**
     * @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 gasLimit x maxFeePerGas - execution cost gets credited here on L2 balance
     * @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 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 gasLimit x maxFeePerGas - execution cost gets credited here on L2 balance
     * @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);
    // ---------- onlyRollupOrOwner functions ----------
    /// @notice pauses all inbox functionality
    function pause() external;
    /// @notice unpauses all inbox functionality
    function unpause() external;
    // ---------- 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;
    function initialize(IBridge _bridge, ISequencerInbox _sequencerInbox) external;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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";
interface ISequencerInbox is IDelayedMessageProvider {
    struct MaxTimeVariation {
        uint256 delayBlocks;
        uint256 futureBlocks;
        uint256 delaySeconds;
        uint256 futureSeconds;
    }
    struct TimeBounds {
        uint64 minTimestamp;
        uint64 maxTimestamp;
        uint64 minBlockNumber;
        uint64 maxBlockNumber;
    }
    enum BatchDataLocation {
        TxInput,
        SeparateBatchEvent,
        NoData
    }
    event SequencerBatchDelivered(
        uint256 indexed batchSequenceNumber,
        bytes32 indexed beforeAcc,
        bytes32 indexed afterAcc,
        bytes32 delayedAcc,
        uint256 afterDelayedMessagesRead,
        TimeBounds timeBounds,
        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);
    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 not used.
    // solhint-disable-next-line func-name-mixedcase
    function DATA_AUTHENTICATED_FLAG() external view returns (bytes1);
    function rollup() external view returns (IOwnable);
    function isBatchPoster(address) external view returns (bool);
    struct DasKeySetInfo {
        bool isValidKeyset;
        uint64 creationBlock;
    }
    // https://github.com/ethereum/solidity/issues/11826
    // function maxTimeVariation() external view returns (MaxTimeVariation calldata);
    // function dasKeySetInfo(bytes32) external view returns (DasKeySetInfo calldata);
    /// @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 and
    ///         maxTimeVariation.delaySeconds 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);
    // ---------- BatchPoster functions ----------
    function addSequencerL2BatchFromOrigin(
        uint256 sequenceNumber,
        bytes calldata data,
        uint256 afterDelayedMessagesRead,
        IGasRefunder gasRefunder
    ) external;
    function addSequencerL2Batch(
        uint256 sequenceNumber,
        bytes calldata data,
        uint256 afterDelayedMessagesRead,
        IGasRefunder gasRefunder,
        uint256 prevMessageCount,
        uint256 newMessageCount
    ) 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;
    // ---------- initializer ----------
    function initialize(IBridge bridge_, MaxTimeVariation calldata maxTimeVariation_) external;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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 {
    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);
    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);
    /**
     * @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);
    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;
    // ---------- initializer ----------
    function initialize(IOwnable rollup_) external;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
library Messages {
    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));
    }
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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/nitro/blob/master/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/nitro/blob/master/LICENSE
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.4;
// 90% of Geth's 128KB tx size limit, leaving ~13KB for proving
uint256 constant MAX_DATA_SIZE = 117964;
uint64 constant NO_CHAL_INDEX = 0;
// Expected seconds per block in Ethereum PoS
uint256 constant ETH_POS_BLOCK_TIME = 12;
address constant UNISWAP_L1_TIMELOCK = 0x1a9C8182C09F50C8318d769245beA52c32BE35BC;
address constant UNISWAP_L2_FACTORY = 0x1F98431c8aD98523631AE4a59f267346ea31F984;
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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
     * @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
    );
}
// 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 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
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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 Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }
    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!paused(), "Pausable: paused");
        _;
    }
    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        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;
}
// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/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/nitro/blob/master/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/nitro/blob/master/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);
}
abstract contract GasRefundEnabled {
    /// @dev this refunds the sender for execution costs of the tx
    /// calldata costs are only refunded if `msg.sender == tx.origin` to guarantee the value refunded relates to charging
    /// for the `tx.input`. this avoids a possible attack where you generate large calldata from a contract and get over-refunded
    modifier refundsGas(IGasRefunder gasRefunder) {
        uint256 startGasLeft = gasleft();
        _;
        if (address(gasRefunder) != address(0)) {
            uint256 calldataSize;
            assembly {
                calldataSize := calldatasize()
            }
            uint256 calldataWords = (calldataSize + 31) / 32;
            // account for the CALLDATACOPY cost of the proxy contract, including the memory expansion cost
            startGasLeft += calldataWords * 6 + (calldataWords**2) / 512;
            // if triggered in a contract call, the spender may be overrefunded by appending dummy data to the call
            // so we check if it is a top level call, which would mean the sender paid calldata as part of tx.input
            // solhint-disable-next-line avoid-tx-origin
            if (msg.sender != tx.origin) {
                // We can't be sure if this calldata came from the top level tx,
                // so to be safe we tell the gas refunder there was no calldata.
                calldataSize = 0;
            }
            gasRefunder.onGasSpent(payable(msg.sender), startGasLeft - gasleft(), calldataSize);
        }
    }
}
// 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 v4.5.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.0;
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.
 *
 * 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 initialize the implementation contract, you can either invoke the
 * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() initializer {}
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;
    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;
    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        // If the contract is initializing we ignore whether _initialized is set in order to support multiple
        // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the
        // contract may have been reentered.
        require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized");
        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
        }
    }
    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} modifier, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }
    function _isConstructor() private view returns (bool) {
        return !AddressUpgradeable.isContract(address(this));
    }
}