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$0.00More Info
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Set Owner | 16982836 | 627 days ago | IN | 0 ETH | 0.00109316 |
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This contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.
Contract Name:
L1ChugSplashProxy
Compiler Version
v0.8.15+commit.e14f2714
Optimization Enabled:
Yes with 999999 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.15; /** * @title IL1ChugSplashDeployer */ interface IL1ChugSplashDeployer { function isUpgrading() external view returns (bool); } /** * @custom:legacy * @title L1ChugSplashProxy * @notice 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. * * 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 { /** * @notice "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; /** * @notice bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1) */ bytes32 internal constant IMPLEMENTATION_KEY = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @notice bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1) */ bytes32 internal constant OWNER_KEY = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /** * @notice 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"); } _; } /** * @notice 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. */ // slither-disable-next-line incorrect-modifier modifier proxyCallIfNotOwner() { if (msg.sender == _getOwner() || msg.sender == address(0)) { _; } else { // This WILL halt the call frame on completion. _doProxyCall(); } } /** * @param _owner Address of the initial contract owner. */ constructor(address _owner) { _setOwner(_owner); } // 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 Sets the code that should be running behind this proxy. * * Note: 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) external 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); } /** * @notice 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) external proxyCallIfNotOwner { assembly { sstore(_key, _value) } } /** * @notice Changes the owner of the proxy contract. Only callable by the owner. * * @param _owner New owner of the proxy contract. */ function setOwner(address _owner) external proxyCallIfNotOwner { _setOwner(_owner); } /** * @notice 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() external proxyCallIfNotOwner returns (address) { return _getOwner(); } /** * @notice 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() external proxyCallIfNotOwner returns (address) { return _getImplementation(); } /** * @notice Sets the implementation address. * * @param _implementation New implementation address. */ function _setImplementation(address _implementation) internal { assembly { sstore(IMPLEMENTATION_KEY, _implementation) } } /** * @notice 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) } } /** * @notice 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()) } } /** * @notice Queries the implementation address. * * @return Implementation address. */ function _getImplementation() internal view returns (address) { address implementation; assembly { implementation := sload(IMPLEMENTATION_KEY) } return implementation; } /** * @notice 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; } /** * @notice 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; } }
{ "remappings": [ "@openzeppelin/=node_modules/@openzeppelin/", "@openzeppelin/contracts-upgradeable/=node_modules/@openzeppelin/contracts-upgradeable/", "@openzeppelin/contracts/=node_modules/@openzeppelin/contracts/", "@rari-capital/=node_modules/@rari-capital/", "@rari-capital/solmate/=node_modules/@rari-capital/solmate/", "ds-test/=node_modules/ds-test/src/", "forge-std/=node_modules/forge-std/src/" ], "optimizer": { "enabled": true, "runs": 999999 }, "metadata": { "bytecodeHash": "none" }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "evmVersion": "london", "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"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"},{"stateMutability":"payable","type":"receive"}]
Contract Creation Code
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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)
00000000000000000000000078339d822c23d943e4a2d4c3dd5408f66e6d662d
-----Decoded View---------------
Arg [0] : _owner (address): 0x78339d822c23D943E4a2d4c3DD5408F66e6D662D
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000078339d822c23d943e4a2d4c3dd5408f66e6d662d
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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.