Contract
0xCF790788Ef1DA81d555cEC33F04F7e9E13DCae11
8
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Parent Txn Hash | Block | From | To | Value | |||
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0xb370918d0bff671044fce8421f17f623a706de672453c9779c467dadb14b0e63 | 1431832 | 190 days 12 hrs ago | 0x4e59b44847b379578588920ca78fbf26c0b4956c | Contract Creation | 0 ETH |
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Contract Source Code Verified (Exact Match)
Contract Name:
DiamondLoupeFacet
Compiler Version
v0.8.17+commit.8df45f5f
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; /******************************************************************************\ * Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen) * EIP-2535 Diamonds: https://eips.ethereum.org/EIPS/eip-2535 /******************************************************************************/ import {LibDiamond} from "../libraries/LibDiamond.sol"; import {IDiamondLoupe} from "../interfaces/IDiamondLoupe.sol"; import {IERC165} from "../interfaces/IERC165.sol"; // The functions in DiamondLoupeFacet MUST be added to a diamond. // The EIP-2535 Diamond standard requires these functions. contract DiamondLoupeFacet is IDiamondLoupe, IERC165 { // Diamond Loupe Functions //////////////////////////////////////////////////////////////////// /// These functions are expected to be called frequently by tools. // // struct Facet { // address facetAddress; // bytes4[] functionSelectors; // } /// @notice Gets all facets and their selectors. /// @return facets_ Facet function facets() external view override returns (Facet[] memory facets_) { LibDiamond.DiamondStorage storage ds = LibDiamond.diamondStorage(); uint256 numFacets = ds.facetAddresses.length; facets_ = new Facet[](numFacets); for (uint256 i; i < numFacets; ) { address facetAddress_ = ds.facetAddresses[i]; facets_[i].facetAddress = facetAddress_; facets_[i].functionSelectors = ds.facetFunctionSelectors[facetAddress_].functionSelectors; unchecked { ++i; } } } /// @notice Gets all the function selectors provided by a facet. /// @param _facet The facet address. /// @return facetFunctionSelectors_ function facetFunctionSelectors(address _facet) external view override returns (bytes4[] memory facetFunctionSelectors_) { LibDiamond.DiamondStorage storage ds = LibDiamond.diamondStorage(); facetFunctionSelectors_ = ds.facetFunctionSelectors[_facet].functionSelectors; } /// @notice Get all the facet addresses used by a diamond. /// @return facetAddresses_ function facetAddresses() external view override returns (address[] memory facetAddresses_) { LibDiamond.DiamondStorage storage ds = LibDiamond.diamondStorage(); facetAddresses_ = ds.facetAddresses; } /// @notice Gets the facet that supports the given selector. /// @dev If facet is not found return address(0). /// @param _functionSelector The function selector. /// @return facetAddress_ The facet address. function facetAddress(bytes4 _functionSelector) external view override returns (address facetAddress_) { LibDiamond.DiamondStorage storage ds = LibDiamond.diamondStorage(); facetAddress_ = ds.selectorToFacetAndPosition[_functionSelector].facetAddress; } // This implements ERC-165. function supportsInterface(bytes4 _interfaceId) external view override returns (bool) { LibDiamond.DiamondStorage storage ds = LibDiamond.diamondStorage(); return ds.supportedInterfaces[_interfaceId]; } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; /******************************************************************************\ * Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen) * EIP-2535 Diamonds: https://eips.ethereum.org/EIPS/eip-2535 /******************************************************************************/ interface IDiamondCut { enum FacetCutAction { Add, Replace, Remove } // Add=0, Replace=1, Remove=2 struct FacetCut { address facetAddress; FacetCutAction action; bytes4[] functionSelectors; } /// @notice Propose to add/replace/remove any number of functions and optionally execute /// a function with delegatecall /// @param _diamondCut Contains the facet addresses and function selectors /// @param _init The address of the contract or facet to execute _calldata /// @param _calldata A function call, including function selector and arguments /// _calldata is executed with delegatecall on _init function proposeDiamondCut( FacetCut[] calldata _diamondCut, address _init, bytes calldata _calldata ) external; event DiamondCutProposed(FacetCut[] _diamondCut, address _init, bytes _calldata, uint256 deadline); /// @notice Add/replace/remove any number of functions and optionally execute /// a function with delegatecall /// @param _diamondCut Contains the facet addresses and function selectors /// @param _init The address of the contract or facet to execute _calldata /// @param _calldata A function call, including function selector and arguments /// _calldata is executed with delegatecall on _init function diamondCut( FacetCut[] calldata _diamondCut, address _init, bytes calldata _calldata ) external; event DiamondCut(FacetCut[] _diamondCut, address _init, bytes _calldata); /// @notice Propose to add/replace/remove any number of functions and optionally execute /// a function with delegatecall /// @param _diamondCut Contains the facet addresses and function selectors /// @param _init The address of the contract or facet to execute _calldata /// @param _calldata A function call, including function selector and arguments /// _calldata is executed with delegatecall on _init function rescindDiamondCut( FacetCut[] calldata _diamondCut, address _init, bytes calldata _calldata ) external; /** * @notice Returns the acceptance time for a given proposal * @param _diamondCut Contains the facet addresses and function selectors * @param _init The address of the contract or facet to execute _calldata * @param _calldata A function call, including function selector and arguments _calldata is * executed with delegatecall on _init */ function getAcceptanceTime( FacetCut[] calldata _diamondCut, address _init, bytes calldata _calldata ) external returns (uint256); event DiamondCutRescinded(FacetCut[] _diamondCut, address _init, bytes _calldata); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; /******************************************************************************\ * Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen) * EIP-2535 Diamonds: https://eips.ethereum.org/EIPS/eip-2535 /******************************************************************************/ // A loupe is a small magnifying glass used to look at diamonds. // These functions look at diamonds interface IDiamondLoupe { /// These functions are expected to be called frequently /// by tools. struct Facet { address facetAddress; bytes4[] functionSelectors; } /// @notice Gets all facet addresses and their four byte function selectors. /// @return facets_ Facet function facets() external view returns (Facet[] memory facets_); /// @notice Gets all the function selectors supported by a specific facet. /// @param _facet The facet address. /// @return facetFunctionSelectors_ function facetFunctionSelectors(address _facet) external view returns (bytes4[] memory facetFunctionSelectors_); /// @notice Get all the facet addresses used by a diamond. /// @return facetAddresses_ function facetAddresses() external view returns (address[] memory facetAddresses_); /// @notice Gets the facet that supports the given selector. /// @dev If facet is not found return address(0). /// @param _functionSelector The function selector. /// @return facetAddress_ The facet address. function facetAddress(bytes4 _functionSelector) external view returns (address facetAddress_); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; interface IERC165 { /// @notice Query if a contract implements an interface /// @param interfaceId The interface identifier, as specified in ERC-165 /// @dev Interface identification is specified in ERC-165. This function /// uses less than 30,000 gas. /// @return `true` if the contract implements `interfaceID` and /// `interfaceID` is not 0xffffffff, `false` otherwise function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; /******************************************************************************\ * Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen) * EIP-2535 Diamonds: https://eips.ethereum.org/EIPS/eip-2535 /******************************************************************************/ import {IDiamondCut} from "../interfaces/IDiamondCut.sol"; // Remember to add the loupe functions from DiamondLoupeFacet to the diamond. // The loupe functions are required by the EIP2535 Diamonds standard library LibDiamond { bytes32 constant DIAMOND_STORAGE_POSITION = keccak256("diamond.standard.diamond.storage"); struct FacetAddressAndPosition { address facetAddress; uint96 functionSelectorPosition; // position in facetFunctionSelectors.functionSelectors array } struct FacetFunctionSelectors { bytes4[] functionSelectors; uint256 facetAddressPosition; // position of facetAddress in facetAddresses array } struct DiamondStorage { // maps function selector to the facet address and // the position of the selector in the facetFunctionSelectors.selectors array mapping(bytes4 => FacetAddressAndPosition) selectorToFacetAndPosition; // maps facet addresses to function selectors mapping(address => FacetFunctionSelectors) facetFunctionSelectors; // facet addresses address[] facetAddresses; // Used to query if a contract implements an interface. // Used to implement ERC-165. mapping(bytes4 => bool) supportedInterfaces; // owner of the contract address contractOwner; // hash of proposed facets => acceptance time mapping(bytes32 => uint256) acceptanceTimes; // acceptance delay for upgrading facets uint256 acceptanceDelay; } function diamondStorage() internal pure returns (DiamondStorage storage ds) { bytes32 position = DIAMOND_STORAGE_POSITION; assembly { ds.slot := position } } event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); function setContractOwner(address _newOwner) internal { DiamondStorage storage ds = diamondStorage(); emit OwnershipTransferred(ds.contractOwner, _newOwner); ds.contractOwner = _newOwner; } function contractOwner() internal view returns (address contractOwner_) { contractOwner_ = diamondStorage().contractOwner; } function acceptanceDelay() internal view returns (uint256) { return diamondStorage().acceptanceDelay; } function acceptanceTime(bytes32 _key) internal view returns (uint256) { return diamondStorage().acceptanceTimes[_key]; } function enforceIsContractOwner() internal view { require(msg.sender == diamondStorage().contractOwner, "LibDiamond: !contract owner"); } event DiamondCutProposed(IDiamondCut.FacetCut[] _diamondCut, address _init, bytes _calldata, uint256 deadline); function proposeDiamondCut( IDiamondCut.FacetCut[] memory _diamondCut, address _init, bytes memory _calldata ) internal { // NOTE: to save gas, verification that `proposeDiamondCut` and `diamondCut` are not // included is performed in `diamondCut`, where there is already a loop over facets. // In the case where these cuts are performed, admins must call `rescindDiamondCut` DiamondStorage storage ds = diamondStorage(); uint256 acceptance = block.timestamp + ds.acceptanceDelay; ds.acceptanceTimes[keccak256(abi.encode(_diamondCut, _init, _calldata))] = acceptance; emit DiamondCutProposed(_diamondCut, _init, _calldata, acceptance); } event DiamondCutRescinded(IDiamondCut.FacetCut[] _diamondCut, address _init, bytes _calldata); function rescindDiamondCut( IDiamondCut.FacetCut[] memory _diamondCut, address _init, bytes memory _calldata ) internal { // NOTE: you can always rescind a proposed facet cut as the owner, even if outside of the validity // period or befor the delay elpases delete diamondStorage().acceptanceTimes[keccak256(abi.encode(_diamondCut, _init, _calldata))]; emit DiamondCutRescinded(_diamondCut, _init, _calldata); } event DiamondCut(IDiamondCut.FacetCut[] _diamondCut, address _init, bytes _calldata); // Internal function version of diamondCut function diamondCut( IDiamondCut.FacetCut[] memory _diamondCut, address _init, bytes memory _calldata ) internal { DiamondStorage storage ds = diamondStorage(); bytes32 key = keccak256(abi.encode(_diamondCut, _init, _calldata)); if (ds.facetAddresses.length != 0) { uint256 time = ds.acceptanceTimes[key]; require(time != 0 && time <= block.timestamp, "LibDiamond: delay not elapsed"); // Reset the acceptance time to ensure the same set of updates cannot be replayed // without going through a proposal window // NOTE: the only time this will not be set to 0 is when there are no // existing facet addresses (on initialization, or when starting after a bad upgrade, // for example). // The only relevant case is the initial case, which has no acceptance time. otherwise, // there is no way to update the facet selector mapping to call `diamondCut`. // Avoiding setting the empty value will save gas on the initial deployment. delete ds.acceptanceTimes[key]; } // Otherwise, this is the first instance of deployment and it can be set automatically uint256 len = _diamondCut.length; for (uint256 facetIndex; facetIndex < len; ) { IDiamondCut.FacetCutAction action = _diamondCut[facetIndex].action; if (action == IDiamondCut.FacetCutAction.Add) { addFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors); } else if (action == IDiamondCut.FacetCutAction.Replace) { replaceFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors); } else if (action == IDiamondCut.FacetCutAction.Remove) { removeFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors); } else { revert("LibDiamondCut: Incorrect FacetCutAction"); } unchecked { ++facetIndex; } } emit DiamondCut(_diamondCut, _init, _calldata); initializeDiamondCut(_init, _calldata); } function addFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal { require(_functionSelectors.length != 0, "LibDiamondCut: No selectors in facet to cut"); DiamondStorage storage ds = diamondStorage(); require(_facetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)"); uint96 selectorPosition = uint96(ds.facetFunctionSelectors[_facetAddress].functionSelectors.length); // add new facet address if it does not exist if (selectorPosition == 0) { addFacet(ds, _facetAddress); } uint256 len = _functionSelectors.length; for (uint256 selectorIndex; selectorIndex < len; ) { bytes4 selector = _functionSelectors[selectorIndex]; address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress; require(oldFacetAddress == address(0), "LibDiamondCut: Can't add function that already exists"); addFunction(ds, selector, selectorPosition, _facetAddress); selectorPosition++; unchecked { ++selectorIndex; } } } function replaceFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal { uint256 len = _functionSelectors.length; require(len != 0, "LibDiamondCut: No selectors in facet to cut"); DiamondStorage storage ds = diamondStorage(); require(_facetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)"); uint96 selectorPosition = uint96(ds.facetFunctionSelectors[_facetAddress].functionSelectors.length); // add new facet address if it does not exist if (selectorPosition == 0) { addFacet(ds, _facetAddress); } for (uint256 selectorIndex; selectorIndex < len; ) { bytes4 selector = _functionSelectors[selectorIndex]; address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress; require(oldFacetAddress != _facetAddress, "LibDiamondCut: Can't replace function with same function"); removeFunction(ds, oldFacetAddress, selector); addFunction(ds, selector, selectorPosition, _facetAddress); selectorPosition++; unchecked { ++selectorIndex; } } } function removeFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal { require(_functionSelectors.length != 0, "LibDiamondCut: No selectors in facet to cut"); DiamondStorage storage ds = diamondStorage(); // get the propose and cut selectors -- can never remove these bytes4 proposeSelector = IDiamondCut.proposeDiamondCut.selector; bytes4 cutSelector = IDiamondCut.diamondCut.selector; // if function does not exist then do nothing and return require(_facetAddress == address(0), "LibDiamondCut: Remove facet address must be address(0)"); uint256 len = _functionSelectors.length; for (uint256 selectorIndex; selectorIndex < len; ) { bytes4 selector = _functionSelectors[selectorIndex]; require(selector != proposeSelector && selector != cutSelector, "LibDiamondCut: Cannot remove cut selectors"); address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress; removeFunction(ds, oldFacetAddress, selector); unchecked { ++selectorIndex; } } } function addFacet(DiamondStorage storage ds, address _facetAddress) internal { enforceHasContractCode(_facetAddress, "LibDiamondCut: New facet has no code"); ds.facetFunctionSelectors[_facetAddress].facetAddressPosition = ds.facetAddresses.length; ds.facetAddresses.push(_facetAddress); } function addFunction( DiamondStorage storage ds, bytes4 _selector, uint96 _selectorPosition, address _facetAddress ) internal { ds.selectorToFacetAndPosition[_selector].functionSelectorPosition = _selectorPosition; ds.facetFunctionSelectors[_facetAddress].functionSelectors.push(_selector); ds.selectorToFacetAndPosition[_selector].facetAddress = _facetAddress; } function removeFunction( DiamondStorage storage ds, address _facetAddress, bytes4 _selector ) internal { require(_facetAddress != address(0), "LibDiamondCut: Can't remove function that doesn't exist"); // an immutable function is a function defined directly in a diamond require(_facetAddress != address(this), "LibDiamondCut: Can't remove immutable function"); // replace selector with last selector, then delete last selector uint256 selectorPosition = ds.selectorToFacetAndPosition[_selector].functionSelectorPosition; uint256 lastSelectorPosition = ds.facetFunctionSelectors[_facetAddress].functionSelectors.length - 1; // if not the same then replace _selector with lastSelector if (selectorPosition != lastSelectorPosition) { bytes4 lastSelector = ds.facetFunctionSelectors[_facetAddress].functionSelectors[lastSelectorPosition]; ds.facetFunctionSelectors[_facetAddress].functionSelectors[selectorPosition] = lastSelector; ds.selectorToFacetAndPosition[lastSelector].functionSelectorPosition = uint96(selectorPosition); } // delete the last selector ds.facetFunctionSelectors[_facetAddress].functionSelectors.pop(); delete ds.selectorToFacetAndPosition[_selector]; // if no more selectors for facet address then delete the facet address if (lastSelectorPosition == 0) { // replace facet address with last facet address and delete last facet address uint256 lastFacetAddressPosition = ds.facetAddresses.length - 1; uint256 facetAddressPosition = ds.facetFunctionSelectors[_facetAddress].facetAddressPosition; if (facetAddressPosition != lastFacetAddressPosition) { address lastFacetAddress = ds.facetAddresses[lastFacetAddressPosition]; ds.facetAddresses[facetAddressPosition] = lastFacetAddress; ds.facetFunctionSelectors[lastFacetAddress].facetAddressPosition = facetAddressPosition; } ds.facetAddresses.pop(); delete ds.facetFunctionSelectors[_facetAddress].facetAddressPosition; } } function initializeDiamondCut(address _init, bytes memory _calldata) internal { if (_init == address(0)) { require(_calldata.length == 0, "LibDiamondCut: _init is address(0) but_calldata is not empty"); } else { require(_calldata.length != 0, "LibDiamondCut: _calldata is empty but _init is not address(0)"); if (_init != address(this)) { enforceHasContractCode(_init, "LibDiamondCut: _init address has no code"); } (bool success, bytes memory error) = _init.delegatecall(_calldata); if (!success) { if (error.length != 0) { // bubble up the error revert(string(error)); } else { revert("LibDiamondCut: _init function reverted"); } } } } function enforceHasContractCode(address _contract, string memory _errorMessage) internal view { require(_contract.code.length != 0, _errorMessage); } }
{ "evmVersion": "london", "libraries": {}, "metadata": { "bytecodeHash": "ipfs", "useLiteralContent": true }, "optimizer": { "enabled": true, "runs": 200 }, "remappings": [], "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
[{"inputs":[{"internalType":"bytes4","name":"_functionSelector","type":"bytes4"}],"name":"facetAddress","outputs":[{"internalType":"address","name":"facetAddress_","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"facetAddresses","outputs":[{"internalType":"address[]","name":"facetAddresses_","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_facet","type":"address"}],"name":"facetFunctionSelectors","outputs":[{"internalType":"bytes4[]","name":"facetFunctionSelectors_","type":"bytes4[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"facets","outputs":[{"components":[{"internalType":"address","name":"facetAddress","type":"address"},{"internalType":"bytes4[]","name":"functionSelectors","type":"bytes4[]"}],"internalType":"struct IDiamondLoupe.Facet[]","name":"facets_","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"_interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Age | Block | Fee Address | BC Fee Address | Voting Power | Jailed | Incoming |
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