ETH Price: $3,776.79 (+1.18%)
Gas: 11 Gwei

Contract

0xf3d58D1794f2634d6649a978f2dc093898FEEBc0
 

Overview

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0 ETH

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$0.00

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Transaction Hash
Method
Block
From
To
Value
Switch Sequencer136421812021-11-18 23:09:46916 days ago1637276986IN
Metis Andromeda: MVM L2 Chain Manager
0 ETH0.02723334139.03002583
Set Owner136304862021-11-17 3:08:23918 days ago1637118503IN
Metis Andromeda: MVM L2 Chain Manager
0 ETH0.00323643120.93853243
Set Owner136286042021-11-16 20:07:02918 days ago1637093222IN
Metis Andromeda: MVM L2 Chain Manager
0 ETH0.00358045149.42834542
Set Storage136285892021-11-16 20:02:23918 days ago1637092943IN
Metis Andromeda: MVM L2 Chain Manager
0 ETH0.00618849134.25819117
Set Storage136283822021-11-16 19:16:45918 days ago1637090205IN
Metis Andromeda: MVM L2 Chain Manager
0 ETH0.00541965117.60890674
Set Code136283652021-11-16 19:12:59918 days ago1637089979IN
Metis Andromeda: MVM L2 Chain Manager
0 ETH0.06862287126.82246593
0x60806040136283262021-11-16 19:04:24918 days ago1637089464IN
 Create: L1ChugSplashProxy
0 ETH0.07778336126.59455321

Latest 1 internal transaction

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Parent Transaction Hash Block From To Value
136283652021-11-16 19:12:59918 days ago1637089979
Metis Andromeda: MVM L2 Chain Manager
 Contract Creation0 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
L1ChugSplashProxy

Compiler Version
v0.8.9+commit.e5eed63a

Optimization Enabled:
Yes with 10000 runs

Other Settings:
default evmVersion
File 1 of 2 : L1ChugSplashProxy.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import { iL1ChugSplashDeployer } from "./interfaces/iL1ChugSplashDeployer.sol";

/**
 * @title L1ChugSplashProxy
 * @dev Basic ChugSplash proxy contract for L1. Very close to being a normal proxy but has added
 * functions `setCode` and `setStorage` for changing the code or storage of the contract. Nifty!
 *
 * Note for future developers: do NOT make anything in this contract 'public' unless you know what
 * you're doing. Anything public can potentially have a function signature that conflicts with a
 * signature attached to the implementation contract. Public functions SHOULD always have the
 * 'proxyCallIfNotOwner' modifier unless there's some *really* good reason not to have that
 * modifier. And there almost certainly is not a good reason to not have that modifier. Beware!
 */
contract L1ChugSplashProxy {

    /*************
     * Constants *
     *************/

    // "Magic" prefix. When prepended to some arbitrary bytecode and used to create a contract, the
    // appended bytecode will be deployed as given.
    bytes13 internal constant DEPLOY_CODE_PREFIX = 0x600D380380600D6000396000f3;

    // bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)
    bytes32 internal constant IMPLEMENTATION_KEY =
        0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    // bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1)
    bytes32 internal constant OWNER_KEY =
        0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /***************
     * Constructor *
     ***************/

    /**
     * @param _owner Address of the initial contract owner.
     */
    constructor(address _owner) {
        _setOwner(_owner);
    }

    /**********************
     * Function Modifiers *
     **********************/

    /**
     * Blocks a function from being called when the parent signals that the system should be paused
     * via an isUpgrading function.
     */
    modifier onlyWhenNotPaused() {
        address owner = _getOwner();

        // We do a low-level call because there's no guarantee that the owner actually *is* an
        // L1ChugSplashDeployer contract and Solidity will throw errors if we do a normal call and
        // it turns out that it isn't the right type of contract.
        (bool success, bytes memory returndata) = owner.staticcall(
            abi.encodeWithSelector(iL1ChugSplashDeployer.isUpgrading.selector)
        );

        // If the call was unsuccessful then we assume that there's no "isUpgrading" method and we
        // can just continue as normal. We also expect that the return value is exactly 32 bytes
        // long. If this isn't the case then we can safely ignore the result.
        if (success && returndata.length == 32) {
            // Although the expected value is a *boolean*, it's safer to decode as a uint256 in the
            // case that the isUpgrading function returned something other than 0 or 1. But we only
            // really care about the case where this value is 0 (= false).
            uint256 ret = abi.decode(returndata, (uint256));
            require(ret == 0, "L1ChugSplashProxy: system is currently being upgraded");
        }

        _;
    }

    /**
     * Makes a proxy call instead of triggering the given function when the caller is either the
     * owner or the zero address. Caller can only ever be the zero address if this function is
     * being called off-chain via eth_call, which is totally fine and can be convenient for
     * client-side tooling. Avoids situations where the proxy and implementation share a sighash
     * and the proxy function ends up being called instead of the implementation one.
     *
     * Note: msg.sender == address(0) can ONLY be triggered off-chain via eth_call. If there's a
     * way for someone to send a transaction with msg.sender == address(0) in any real context then
     * we have much bigger problems. Primary reason to include this additional allowed sender is
     * because the owner address can be changed dynamically and we do not want clients to have to
     * keep track of the current owner in order to make an eth_call that doesn't trigger the
     * proxied contract.
     */
    modifier proxyCallIfNotOwner() {
        if (msg.sender == _getOwner() || msg.sender == address(0)) {
            _;
        } else {
            // This WILL halt the call frame on completion.
            _doProxyCall();
        }
    }


    /*********************
     * Fallback Function *
     *********************/

    fallback() external payable {
        // Proxy call by default.
        _doProxyCall();
    }


    /********************
     * Public Functions *
     ********************/

    /**
     * Sets the code that should be running behind this proxy. Note that this scheme is a bit
     * different from the standard proxy scheme where one would typically deploy the code
     * separately and then set the implementation address. We're doing it this way because it gives
     * us a lot more freedom on the client side. Can only be triggered by the contract owner.
     * @param _code New contract code to run inside this contract.
     */
    function setCode(bytes memory _code) public proxyCallIfNotOwner {
        // Get the code hash of the current implementation.
        address implementation = _getImplementation();

        // If the code hash matches the new implementation then we return early.
        if (keccak256(_code) == _getAccountCodeHash(implementation)) {
            return;
        }

        // Create the deploycode by appending the magic prefix.
        bytes memory deploycode = abi.encodePacked(DEPLOY_CODE_PREFIX, _code);

        // Deploy the code and set the new implementation address.
        address newImplementation;
        assembly {
            newImplementation := create(0x0, add(deploycode, 0x20), mload(deploycode))
        }

        // Check that the code was actually deployed correctly. I'm not sure if you can ever
        // actually fail this check. Should only happen if the contract creation from above runs
        // out of gas but this parent execution thread does NOT run out of gas. Seems like we
        // should be doing this check anyway though.
        require(
            _getAccountCodeHash(newImplementation) == keccak256(_code),
            "L1ChugSplashProxy: code was not correctly deployed."
        );

        _setImplementation(newImplementation);
    }

    /**
     * Modifies some storage slot within the proxy contract. Gives us a lot of power to perform
     * upgrades in a more transparent way. Only callable by the owner.
     * @param _key Storage key to modify.
     * @param _value New value for the storage key.
     */
    function setStorage(bytes32 _key, bytes32 _value) public proxyCallIfNotOwner {
        assembly {
            sstore(_key, _value)
        }
    }

    /**
     * Changes the owner of the proxy contract. Only callable by the owner.
     * @param _owner New owner of the proxy contract.
     */
    function setOwner(address _owner) public proxyCallIfNotOwner {
        _setOwner(_owner);
    }

    /**
     * Queries the owner of the proxy contract. Can only be called by the owner OR by making an
     * eth_call and setting the "from" address to address(0).
     * @return Owner address.
     */
    function getOwner() public proxyCallIfNotOwner returns (address) {
        return _getOwner();
    }

    /**
     * Queries the implementation address. Can only be called by the owner OR by making an
     * eth_call and setting the "from" address to address(0).
     * @return Implementation address.
     */
    function getImplementation() public proxyCallIfNotOwner returns (address) {
        return _getImplementation();
    }

    /**********************
     * Internal Functions *
     **********************/

    /**
     * Sets the implementation address.
     * @param _implementation New implementation address.
     */
    function _setImplementation(address _implementation) internal {
        assembly {
            sstore(IMPLEMENTATION_KEY, _implementation)
        }
    }

    /**
     * Queries the implementation address.
     * @return Implementation address.
     */
    function _getImplementation() internal view returns (address) {
        address implementation;
        assembly {
            implementation := sload(IMPLEMENTATION_KEY)
        }
        return implementation;
    }

    /**
     * Changes the owner of the proxy contract.
     * @param _owner New owner of the proxy contract.
     */
    function _setOwner(address _owner) internal {
        assembly {
            sstore(OWNER_KEY, _owner)
        }
    }

    /**
     * Queries the owner of the proxy contract.
     * @return Owner address.
     */
    function _getOwner() internal view returns (address) {
        address owner;
        assembly {
            owner := sload(OWNER_KEY)
        }
        return owner;
    }

    /**
     * Gets the code hash for a given account.
     * @param _account Address of the account to get a code hash for.
     * @return Code hash for the account.
     */
    function _getAccountCodeHash(address _account) internal view returns (bytes32) {
        bytes32 codeHash;
        assembly {
            codeHash := extcodehash(_account)
        }
        return codeHash;
    }

    /**
     * Performs the proxy call via a delegatecall.
     */
    function _doProxyCall() internal onlyWhenNotPaused {
        address implementation = _getImplementation();

        require(implementation != address(0), "L1ChugSplashProxy: implementation is not set yet");

        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(), implementation, 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())
        }
    }
}

File 3 of 2 : iL1ChugSplashDeployer.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

/**
 * @title iL1ChugSplashDeployer
 */
interface iL1ChugSplashDeployer {
    function isUpgrading() external view returns (bool);
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"getImplementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes","name":"_code","type":"bytes"}],"name":"setCode","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"setOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_key","type":"bytes32"},{"internalType":"bytes32","name":"_value","type":"bytes32"}],"name":"setStorage","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Deployed Bytecode

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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000dd6ffc7d9a4fb420b637747edc6456340d12d377

-----Decoded View---------------
Arg [0] : _owner (address): 0xDD6FFC7D9a4Fb420b637747edc6456340d12d377

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000dd6ffc7d9a4fb420b637747edc6456340d12d377


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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.