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// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;

import { Constants } from "src/libraries/Constants.sol";

/// @title Proxy
/// @notice Proxy is a transparent proxy that passes through the call if the caller is the owner or
///         if the caller is address(0), meaning that the call originated from an off-chain
///         simulation.
contract Proxy {
    /// @notice An event that is emitted each time the implementation is changed. This event is part
    ///         of the EIP-1967 specification.
    /// @param implementation The address of the implementation contract
    event Upgraded(address indexed implementation);

    /// @notice An event that is emitted each time the owner is upgraded. This event is part of the
    ///         EIP-1967 specification.
    /// @param previousAdmin The previous owner of the contract
    /// @param newAdmin      The new owner of the contract
    event AdminChanged(address previousAdmin, address newAdmin);

    /// @notice A modifier that reverts if not called by the owner or by address(0) to allow
    ///         eth_call to interact with this proxy without needing to use low-level storage
    ///         inspection. We assume that nobody is able to trigger calls from address(0) during
    ///         normal EVM execution.
    modifier proxyCallIfNotAdmin() {
        if (msg.sender == _getAdmin() || msg.sender == address(0)) {
            _;
        } else {
            // This WILL halt the call frame on completion.
            _doProxyCall();
        }
    }

    /// @notice Sets the initial admin during contract deployment. Admin address is stored at the
    ///         EIP-1967 admin storage slot so that accidental storage collision with the
    ///         implementation is not possible.
    /// @param _admin Address of the initial contract admin. Admin has the ability to access the
    ///               transparent proxy interface.
    constructor(address _admin) {
        _changeAdmin(_admin);
    }

    // slither-disable-next-line locked-ether
    receive() external payable {
        // Proxy call by default.
        _doProxyCall();
    }

    // slither-disable-next-line locked-ether
    fallback() external payable {
        // Proxy call by default.
        _doProxyCall();
    }

    /// @notice Set the implementation contract address. The code at the given address will execute
    ///         when this contract is called.
    /// @param _implementation Address of the implementation contract.
    function upgradeTo(address _implementation) public virtual proxyCallIfNotAdmin {
        _setImplementation(_implementation);
    }

    /// @notice Set the implementation and call a function in a single transaction. Useful to ensure
    ///         atomic execution of initialization-based upgrades.
    /// @param _implementation Address of the implementation contract.
    /// @param _data           Calldata to delegatecall the new implementation with.
    function upgradeToAndCall(
        address _implementation,
        bytes calldata _data
    )
        public
        payable
        virtual
        proxyCallIfNotAdmin
        returns (bytes memory)
    {
        _setImplementation(_implementation);
        (bool success, bytes memory returndata) = _implementation.delegatecall(_data);
        require(success, "Proxy: delegatecall to new implementation contract failed");
        return returndata;
    }

    /// @notice Changes the owner of the proxy contract. Only callable by the owner.
    /// @param _admin New owner of the proxy contract.
    function changeAdmin(address _admin) public virtual proxyCallIfNotAdmin {
        _changeAdmin(_admin);
    }

    /// @notice Gets the owner of the proxy contract.
    /// @return Owner address.
    function admin() public virtual proxyCallIfNotAdmin returns (address) {
        return _getAdmin();
    }

    //// @notice Queries the implementation address.
    /// @return Implementation address.
    function implementation() public virtual proxyCallIfNotAdmin returns (address) {
        return _getImplementation();
    }

    /// @notice Sets the implementation address.
    /// @param _implementation New implementation address.
    function _setImplementation(address _implementation) internal {
        bytes32 proxyImplementation = Constants.PROXY_IMPLEMENTATION_ADDRESS;
        assembly {
            sstore(proxyImplementation, _implementation)
        }
        emit Upgraded(_implementation);
    }

    /// @notice Changes the owner of the proxy contract.
    /// @param _admin New owner of the proxy contract.
    function _changeAdmin(address _admin) internal {
        address previous = _getAdmin();
        bytes32 proxyOwner = Constants.PROXY_OWNER_ADDRESS;
        assembly {
            sstore(proxyOwner, _admin)
        }
        emit AdminChanged(previous, _admin);
    }

    /// @notice Performs the proxy call via a delegatecall.
    function _doProxyCall() internal {
        address impl = _getImplementation();
        require(impl != address(0), "Proxy: implementation not initialized");

        assembly {
            // Copy calldata into memory at 0x0....calldatasize.
            calldatacopy(0x0, 0x0, calldatasize())

            // Perform the delegatecall, make sure to pass all available gas.
            let success := delegatecall(gas(), impl, 0x0, calldatasize(), 0x0, 0x0)

            // Copy returndata into memory at 0x0....returndatasize. Note that this *will*
            // overwrite the calldata that we just copied into memory but that doesn't really
            // matter because we'll be returning in a second anyway.
            returndatacopy(0x0, 0x0, returndatasize())

            // Success == 0 means a revert. We'll revert too and pass the data up.
            if iszero(success) { revert(0x0, returndatasize()) }

            // Otherwise we'll just return and pass the data up.
            return(0x0, returndatasize())
        }
    }

    /// @notice Queries the implementation address.
    /// @return Implementation address.
    function _getImplementation() internal view returns (address) {
        address impl;
        bytes32 proxyImplementation = Constants.PROXY_IMPLEMENTATION_ADDRESS;
        assembly {
            impl := sload(proxyImplementation)
        }
        return impl;
    }

    /// @notice Queries the owner of the proxy contract.
    /// @return Owner address.
    function _getAdmin() internal view returns (address) {
        address owner;
        bytes32 proxyOwner = Constants.PROXY_OWNER_ADDRESS;
        assembly {
            owner := sload(proxyOwner)
        }
        return owner;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IResourceMetering {
    struct ResourceParams {
        uint128 prevBaseFee;
        uint64 prevBoughtGas;
        uint64 prevBlockNum;
    }

    struct ResourceConfig {
        uint32 maxResourceLimit;
        uint8 elasticityMultiplier;
        uint8 baseFeeMaxChangeDenominator;
        uint32 minimumBaseFee;
        uint32 systemTxMaxGas;
        uint128 maximumBaseFee;
    }

    error OutOfGas();

    event Initialized(uint8 version);

    function params() external view returns (uint128 prevBaseFee, uint64 prevBoughtGas, uint64 prevBlockNum);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import { IResourceMetering } from "src/L1/interfaces/IResourceMetering.sol";

/// @title Constants
/// @notice Constants is a library for storing constants. Simple! Don't put everything in here, just
///         the stuff used in multiple contracts. Constants that only apply to a single contract
///         should be defined in that contract instead.
library Constants {
    /// @notice Special address to be used as the tx origin for gas estimation calls in the
    ///         OptimismPortal and CrossDomainMessenger calls. You only need to use this address if
    ///         the minimum gas limit specified by the user is not actually enough to execute the
    ///         given message and you're attempting to estimate the actual necessary gas limit. We
    ///         use address(1) because it's the ecrecover precompile and therefore guaranteed to
    ///         never have any code on any EVM chain.
    address internal constant ESTIMATION_ADDRESS = address(1);

    /// @notice Value used for the L2 sender storage slot in both the OptimismPortal and the
    ///         CrossDomainMessenger contracts before an actual sender is set. This value is
    ///         non-zero to reduce the gas cost of message passing transactions.
    address internal constant DEFAULT_L2_SENDER = 0x000000000000000000000000000000000000dEaD;

    /// @notice The storage slot that holds the address of a proxy implementation.
    /// @dev `bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)`
    bytes32 internal constant PROXY_IMPLEMENTATION_ADDRESS =
        0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /// @notice The storage slot that holds the address of the owner.
    /// @dev `bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1)`
    bytes32 internal constant PROXY_OWNER_ADDRESS = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /// @notice The address that represents ether when dealing with ERC20 token addresses.
    address internal constant ETHER = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

    /// @notice The address that represents the system caller responsible for L1 attributes
    ///         transactions.
    address internal constant DEPOSITOR_ACCOUNT = 0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001;

    /// @notice Returns the default values for the ResourceConfig. These are the recommended values
    ///         for a production network.
    function DEFAULT_RESOURCE_CONFIG() internal pure returns (IResourceMetering.ResourceConfig memory) {
        IResourceMetering.ResourceConfig memory config = IResourceMetering.ResourceConfig({
            maxResourceLimit: 20_000_000,
            elasticityMultiplier: 10,
            baseFeeMaxChangeDenominator: 8,
            minimumBaseFee: 1 gwei,
            systemTxMaxGas: 1_000_000,
            maximumBaseFee: type(uint128).max
        });
        return config;
    }
}

{
  "remappings": [
    "@lib-keccak/=lib/lib-keccak/contracts/lib/",
    "@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "@openzeppelin/contracts-v5/=lib/openzeppelin-contracts-v5/contracts/",
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "@rari-capital/solmate/=lib/solmate/",
    "@solady-test/=lib/lib-keccak/lib/solady/test/",
    "@solady/=lib/solady/src/",
    "automate/=lib/automate/contracts/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts-v5/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "gelato/=lib/automate/contracts/",
    "hardhat/=lib/automate/node_modules/hardhat/",
    "kontrol-cheatcodes/=lib/kontrol-cheatcodes/src/",
    "lib-keccak/=lib/lib-keccak/contracts/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts-v5/=lib/openzeppelin-contracts-v5/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "prb-test/=lib/automate/lib/prb-test/src/",
    "prb/-est/=lib/automate/lib/prb-test/src/",
    "safe-contracts/=lib/safe-contracts/contracts/",
    "solady/=lib/solady/",
    "solmate/=lib/solmate/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "metadata": {
    "bytecodeHash": "none"
  },
  "evmVersion": "london",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

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[{"inputs":[{"internalType":"address","name":"_admin","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_admin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_implementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_implementation","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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none