ERC-721
Overview
Max Total Supply
10,000 SCAPE
Holders
2,929
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
2 SCAPELoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
Scapes
Compiler Version
v0.8.16+commit.07a7930e
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.16; import {SolidStateDiamond} from "@solidstate/contracts/proxy/diamond/SolidStateDiamond.sol"; /** * @title Scapes * @notice Welcome home. * @author akuti.eth, jalil.eth | scapes.eth * @dev This is a Diamond Contract following EIP-2535. * To view its ABI and interact with functions, * use an EIP-2535 compatible explorer. */ contract Scapes is SolidStateDiamond { /** * * ____ _____ ___ ___ ____ ____ * / __// ___// _ | / _ \ / __// __/ * _\ \ / /__ / __ | / ___// _/ _\ \ * /___/ \___//_/ |_|/_/ /___//___/ * * * This journey began on September 24th, 2021, * when the original PunkScapes smart contract went live. * The mission was simple: Create "10,000 homes for the CryptoPunks." * * But as we received more and more love from other communities, * it became clear that we wanted to become a HOME FOR EVERYONE. * From this realization, we embarked on a mission * to build a world centered around that idea. * * The metadata and art of PunkScapes * was originally hosted on the Interplanetary File System (IPFS). * But we soon realized, in order to fulfill their true potential, * they needed to go fully onchain. * * As time passed, * we felt the weight of our old contract, * and knew it was time to move on. * * So, on the 20th of December, * we burned the old world to the ground, * leaving behind only ashes and memories. * From those ashes, we built a new world, * one that would be our home for all time. * * And thus, the Scapes were created. * * Welcome home. */ }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { IERC173 } from '../../interfaces/IERC173.sol'; interface IOwnable is IERC173 {}
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { IERC173Internal } from '../../interfaces/IERC173Internal.sol'; interface IOwnableInternal is IERC173Internal { error Ownable__NotOwner(); error Ownable__NotTransitiveOwner(); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { IOwnable } from './IOwnable.sol'; interface ISafeOwnable is IOwnable { /** * @notice get the nominated owner who has permission to call acceptOwnership */ function nomineeOwner() external view returns (address); /** * @notice accept transfer of contract ownership */ function acceptOwnership() external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { IOwnableInternal } from './IOwnableInternal.sol'; interface ISafeOwnableInternal is IOwnableInternal { error SafeOwnable__NotNomineeOwner(); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { IERC173 } from '../../interfaces/IERC173.sol'; import { IOwnable } from './IOwnable.sol'; import { OwnableInternal } from './OwnableInternal.sol'; import { OwnableStorage } from './OwnableStorage.sol'; /** * @title Ownership access control based on ERC173 */ abstract contract Ownable is IOwnable, OwnableInternal { using OwnableStorage for OwnableStorage.Layout; /** * @inheritdoc IERC173 */ function owner() public view virtual returns (address) { return _owner(); } /** * @inheritdoc IERC173 */ function transferOwnership(address account) public virtual onlyOwner { _transferOwnership(account); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { IERC173 } from '../../interfaces/IERC173.sol'; import { AddressUtils } from '../../utils/AddressUtils.sol'; import { IOwnableInternal } from './IOwnableInternal.sol'; import { OwnableStorage } from './OwnableStorage.sol'; abstract contract OwnableInternal is IOwnableInternal { using AddressUtils for address; using OwnableStorage for OwnableStorage.Layout; modifier onlyOwner() { if (msg.sender != _owner()) revert Ownable__NotOwner(); _; } modifier onlyTransitiveOwner() { if (msg.sender != _transitiveOwner()) revert Ownable__NotTransitiveOwner(); _; } function _owner() internal view virtual returns (address) { return OwnableStorage.layout().owner; } function _transitiveOwner() internal view virtual returns (address) { address owner = _owner(); while (owner.isContract()) { try IERC173(owner).owner() returns (address transitiveOwner) { owner = transitiveOwner; } catch { return owner; } } return owner; } function _transferOwnership(address account) internal virtual { OwnableStorage.layout().setOwner(account); emit OwnershipTransferred(msg.sender, account); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; library OwnableStorage { struct Layout { address owner; } bytes32 internal constant STORAGE_SLOT = keccak256('solidstate.contracts.storage.Ownable'); function layout() internal pure returns (Layout storage l) { bytes32 slot = STORAGE_SLOT; assembly { l.slot := slot } } function setOwner(Layout storage l, address owner) internal { l.owner = owner; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { Ownable, OwnableStorage } from './Ownable.sol'; import { ISafeOwnable } from './ISafeOwnable.sol'; import { OwnableInternal } from './OwnableInternal.sol'; import { SafeOwnableInternal } from './SafeOwnableInternal.sol'; /** * @title Ownership access control based on ERC173 with ownership transfer safety check */ abstract contract SafeOwnable is ISafeOwnable, Ownable, SafeOwnableInternal { /** * @inheritdoc ISafeOwnable */ function nomineeOwner() public view virtual returns (address) { return _nomineeOwner(); } /** * @inheritdoc ISafeOwnable */ function acceptOwnership() public virtual onlyNomineeOwner { _acceptOwnership(); } function _transferOwnership( address account ) internal virtual override(OwnableInternal, SafeOwnableInternal) { super._transferOwnership(account); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { ISafeOwnableInternal } from './ISafeOwnableInternal.sol'; import { OwnableInternal } from './OwnableInternal.sol'; import { OwnableStorage } from './OwnableStorage.sol'; import { SafeOwnableStorage } from './SafeOwnableStorage.sol'; abstract contract SafeOwnableInternal is ISafeOwnableInternal, OwnableInternal { using OwnableStorage for OwnableStorage.Layout; using SafeOwnableStorage for SafeOwnableStorage.Layout; modifier onlyNomineeOwner() { if (msg.sender != _nomineeOwner()) revert SafeOwnable__NotNomineeOwner(); _; } /** * @notice get the nominated owner who has permission to call acceptOwnership */ function _nomineeOwner() internal view virtual returns (address) { return SafeOwnableStorage.layout().nomineeOwner; } /** * @notice accept transfer of contract ownership */ function _acceptOwnership() internal virtual { OwnableStorage.Layout storage l = OwnableStorage.layout(); emit OwnershipTransferred(l.owner, msg.sender); l.setOwner(msg.sender); SafeOwnableStorage.layout().setNomineeOwner(address(0)); } /** * @notice set nominee owner, granting permission to call acceptOwnership */ function _transferOwnership(address account) internal virtual override { SafeOwnableStorage.layout().setNomineeOwner(account); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; library SafeOwnableStorage { struct Layout { address nomineeOwner; } bytes32 internal constant STORAGE_SLOT = keccak256('solidstate.contracts.storage.SafeOwnable'); function layout() internal pure returns (Layout storage l) { bytes32 slot = STORAGE_SLOT; assembly { l.slot := slot } } function setNomineeOwner(Layout storage l, address nomineeOwner) internal { l.nomineeOwner = nomineeOwner; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; /** * @title ERC165 interface registration interface * @dev see https://eips.ethereum.org/EIPS/eip-165 */ interface IERC165 { /** * @notice query whether contract has registered support for given interface * @param interfaceId interface id * @return bool whether interface is supported */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { IERC173Internal } from './IERC173Internal.sol'; /** * @title Contract ownership standard interface * @dev see https://eips.ethereum.org/EIPS/eip-173 */ interface IERC173 is IERC173Internal { /** * @notice get the ERC173 contract owner * @return conrtact owner */ function owner() external view returns (address); /** * @notice transfer contract ownership to new account * @param account address of new owner */ function transferOwnership(address account) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; /** * @title Partial ERC173 interface needed by internal functions */ interface IERC173Internal { event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { IERC165 } from '../interfaces/IERC165.sol'; import { ERC165Storage } from './ERC165Storage.sol'; /** * @title ERC165 implementation */ abstract contract ERC165 is IERC165 { using ERC165Storage for ERC165Storage.Layout; /** * @inheritdoc IERC165 */ function supportsInterface(bytes4 interfaceId) public view returns (bool) { return ERC165Storage.layout().isSupportedInterface(interfaceId); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; library ERC165Storage { error ERC165Storage__InvalidInterfaceId(); struct Layout { mapping(bytes4 => bool) supportedInterfaces; } bytes32 internal constant STORAGE_SLOT = keccak256('solidstate.contracts.storage.ERC165'); function layout() internal pure returns (Layout storage l) { bytes32 slot = STORAGE_SLOT; assembly { l.slot := slot } } function isSupportedInterface( Layout storage l, bytes4 interfaceId ) internal view returns (bool) { return l.supportedInterfaces[interfaceId]; } function setSupportedInterface( Layout storage l, bytes4 interfaceId, bool status ) internal { if (interfaceId == 0xffffffff) revert ERC165Storage__InvalidInterfaceId(); l.supportedInterfaces[interfaceId] = status; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { Proxy } from '../../Proxy.sol'; import { IDiamondBase } from './IDiamondBase.sol'; import { DiamondBaseStorage } from './DiamondBaseStorage.sol'; /** * @title EIP-2535 "Diamond" proxy base contract * @dev see https://eips.ethereum.org/EIPS/eip-2535 */ abstract contract DiamondBase is IDiamondBase, Proxy { /** * @inheritdoc Proxy */ function _getImplementation() internal view virtual override returns (address implementation) { // inline storage layout retrieval uses less gas DiamondBaseStorage.Layout storage l; bytes32 slot = DiamondBaseStorage.STORAGE_SLOT; assembly { l.slot := slot } implementation = address(bytes20(l.facets[msg.sig])); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; /** * @dev derived from https://github.com/mudgen/diamond-2 (MIT license) */ library DiamondBaseStorage { struct Layout { // function selector => (facet address, selector slot position) mapping(bytes4 => bytes32) facets; // total number of selectors registered uint16 selectorCount; // array of selector slots with 8 selectors per slot mapping(uint256 => bytes32) selectorSlots; address fallbackAddress; } bytes32 internal constant STORAGE_SLOT = keccak256('solidstate.contracts.storage.DiamondBase'); function layout() internal pure returns (Layout storage l) { bytes32 slot = STORAGE_SLOT; assembly { l.slot := slot } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { IProxy } from '../../IProxy.sol'; interface IDiamondBase is IProxy {}
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { OwnableInternal } from '../../../access/ownable/OwnableInternal.sol'; import { DiamondBase } from '../base/DiamondBase.sol'; import { DiamondBaseStorage } from '../base/DiamondBaseStorage.sol'; import { IDiamondFallback } from './IDiamondFallback.sol'; // TODO: DiamondFallback interface /** * @title Fallback feature for EIP-2535 "Diamond" proxy */ abstract contract DiamondFallback is IDiamondFallback, OwnableInternal, DiamondBase { /** * @inheritdoc IDiamondFallback */ function getFallbackAddress() external view returns (address fallbackAddress) { fallbackAddress = _getFallbackAddress(); } /** * @inheritdoc IDiamondFallback */ function setFallbackAddress(address fallbackAddress) external onlyOwner { _setFallbackAddress(fallbackAddress); } /** * @inheritdoc DiamondBase * @notice query custom fallback address is no implementation is found */ function _getImplementation() internal view virtual override returns (address implementation) { implementation = super._getImplementation(); if (implementation == address(0)) { implementation = _getFallbackAddress(); } } /** * @notice query the address of the fallback implementation * @return fallbackAddress address of fallback implementation */ function _getFallbackAddress() internal view virtual returns (address fallbackAddress) { fallbackAddress = DiamondBaseStorage.layout().fallbackAddress; } /** * @notice set the address of the fallback implementation * @param fallbackAddress address of fallback implementation */ function _setFallbackAddress(address fallbackAddress) internal virtual { DiamondBaseStorage.layout().fallbackAddress = fallbackAddress; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { IDiamondBase } from '../base/IDiamondBase.sol'; interface IDiamondFallback is IDiamondBase { /** * @notice query the address of the fallback implementation * @return fallbackAddress address of fallback implementation */ function getFallbackAddress() external view returns (address fallbackAddress); /** * @notice set the address of the fallback implementation * @param fallbackAddress address of fallback implementation */ function setFallbackAddress(address fallbackAddress) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { ISafeOwnable } from '../../access/ownable/ISafeOwnable.sol'; import { IERC165 } from '../../interfaces/IERC165.sol'; import { IDiamondBase } from './base/IDiamondBase.sol'; import { IDiamondFallback } from './fallback/IDiamondFallback.sol'; import { IDiamondReadable } from './readable/IDiamondReadable.sol'; import { IDiamondWritable } from './writable/IDiamondWritable.sol'; interface ISolidStateDiamond is IDiamondBase, IDiamondFallback, IDiamondReadable, IDiamondWritable, ISafeOwnable, IERC165 { receive() external payable; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { DiamondBaseStorage } from '../base/DiamondBaseStorage.sol'; import { IDiamondReadable } from './IDiamondReadable.sol'; /** * @title EIP-2535 "Diamond" proxy introspection contract * @dev derived from https://github.com/mudgen/diamond-2 (MIT license) */ abstract contract DiamondReadable is IDiamondReadable { /** * @inheritdoc IDiamondReadable */ function facets() external view returns (Facet[] memory diamondFacets) { DiamondBaseStorage.Layout storage l = DiamondBaseStorage.layout(); diamondFacets = new Facet[](l.selectorCount); uint8[] memory numFacetSelectors = new uint8[](l.selectorCount); uint256 numFacets; uint256 selectorIndex; // loop through function selectors for (uint256 slotIndex; selectorIndex < l.selectorCount; slotIndex++) { bytes32 slot = l.selectorSlots[slotIndex]; for ( uint256 selectorSlotIndex; selectorSlotIndex < 8; selectorSlotIndex++ ) { selectorIndex++; if (selectorIndex > l.selectorCount) { break; } bytes4 selector = bytes4(slot << (selectorSlotIndex << 5)); address facet = address(bytes20(l.facets[selector])); bool continueLoop; for (uint256 facetIndex; facetIndex < numFacets; facetIndex++) { if (diamondFacets[facetIndex].target == facet) { diamondFacets[facetIndex].selectors[ numFacetSelectors[facetIndex] ] = selector; // probably will never have more than 256 functions from one facet contract require(numFacetSelectors[facetIndex] < 255); numFacetSelectors[facetIndex]++; continueLoop = true; break; } } if (continueLoop) { continue; } diamondFacets[numFacets].target = facet; diamondFacets[numFacets].selectors = new bytes4[]( l.selectorCount ); diamondFacets[numFacets].selectors[0] = selector; numFacetSelectors[numFacets] = 1; numFacets++; } } for (uint256 facetIndex; facetIndex < numFacets; facetIndex++) { uint256 numSelectors = numFacetSelectors[facetIndex]; bytes4[] memory selectors = diamondFacets[facetIndex].selectors; // setting the number of selectors assembly { mstore(selectors, numSelectors) } } // setting the number of facets assembly { mstore(diamondFacets, numFacets) } } /** * @inheritdoc IDiamondReadable */ function facetFunctionSelectors( address facet ) external view returns (bytes4[] memory selectors) { DiamondBaseStorage.Layout storage l = DiamondBaseStorage.layout(); selectors = new bytes4[](l.selectorCount); uint256 numSelectors; uint256 selectorIndex; // loop through function selectors for (uint256 slotIndex; selectorIndex < l.selectorCount; slotIndex++) { bytes32 slot = l.selectorSlots[slotIndex]; for ( uint256 selectorSlotIndex; selectorSlotIndex < 8; selectorSlotIndex++ ) { selectorIndex++; if (selectorIndex > l.selectorCount) { break; } bytes4 selector = bytes4(slot << (selectorSlotIndex << 5)); if (facet == address(bytes20(l.facets[selector]))) { selectors[numSelectors] = selector; numSelectors++; } } } // set the number of selectors in the array assembly { mstore(selectors, numSelectors) } } /** * @inheritdoc IDiamondReadable */ function facetAddresses() external view returns (address[] memory addresses) { DiamondBaseStorage.Layout storage l = DiamondBaseStorage.layout(); addresses = new address[](l.selectorCount); uint256 numFacets; uint256 selectorIndex; for (uint256 slotIndex; selectorIndex < l.selectorCount; slotIndex++) { bytes32 slot = l.selectorSlots[slotIndex]; for ( uint256 selectorSlotIndex; selectorSlotIndex < 8; selectorSlotIndex++ ) { selectorIndex++; if (selectorIndex > l.selectorCount) { break; } bytes4 selector = bytes4(slot << (selectorSlotIndex << 5)); address facet = address(bytes20(l.facets[selector])); bool continueLoop; for (uint256 facetIndex; facetIndex < numFacets; facetIndex++) { if (facet == addresses[facetIndex]) { continueLoop = true; break; } } if (continueLoop) { continue; } addresses[numFacets] = facet; numFacets++; } } // set the number of facet addresses in the array assembly { mstore(addresses, numFacets) } } /** * @inheritdoc IDiamondReadable */ function facetAddress( bytes4 selector ) external view returns (address facet) { facet = address(bytes20(DiamondBaseStorage.layout().facets[selector])); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; /** * @title Diamond proxy introspection interface * @dev see https://eips.ethereum.org/EIPS/eip-2535 */ interface IDiamondReadable { struct Facet { address target; bytes4[] selectors; } /** * @notice get all facets and their selectors * @return diamondFacets array of structured facet data */ function facets() external view returns (Facet[] memory diamondFacets); /** * @notice get all selectors for given facet address * @param facet address of facet to query * @return selectors array of function selectors */ function facetFunctionSelectors( address facet ) external view returns (bytes4[] memory selectors); /** * @notice get addresses of all facets used by diamond * @return addresses array of facet addresses */ function facetAddresses() external view returns (address[] memory addresses); /** * @notice get the address of the facet associated with given selector * @param selector function selector to query * @return facet facet address (zero address if not found) */ function facetAddress( bytes4 selector ) external view returns (address facet); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { IOwnable, Ownable, OwnableInternal, OwnableStorage } from '../../access/ownable/Ownable.sol'; import { ISafeOwnable, SafeOwnable } from '../../access/ownable/SafeOwnable.sol'; import { IERC173 } from '../../interfaces/IERC173.sol'; import { ERC165, IERC165, ERC165Storage } from '../../introspection/ERC165.sol'; import { DiamondBase, DiamondBaseStorage } from './base/DiamondBase.sol'; import { DiamondFallback, IDiamondFallback } from './fallback/DiamondFallback.sol'; import { DiamondReadable, IDiamondReadable } from './readable/DiamondReadable.sol'; import { DiamondWritable, IDiamondWritable } from './writable/DiamondWritable.sol'; import { ISolidStateDiamond } from './ISolidStateDiamond.sol'; /** * @title SolidState "Diamond" proxy reference implementation */ abstract contract SolidStateDiamond is ISolidStateDiamond, DiamondBase, DiamondFallback, DiamondReadable, DiamondWritable, SafeOwnable, ERC165 { using DiamondBaseStorage for DiamondBaseStorage.Layout; using ERC165Storage for ERC165Storage.Layout; using OwnableStorage for OwnableStorage.Layout; constructor() { ERC165Storage.Layout storage erc165 = ERC165Storage.layout(); bytes4[] memory selectors = new bytes4[](12); uint256 selectorIndex; // register DiamondFallback selectors[selectorIndex++] = IDiamondFallback .getFallbackAddress .selector; selectors[selectorIndex++] = IDiamondFallback .setFallbackAddress .selector; erc165.setSupportedInterface(type(IDiamondFallback).interfaceId, true); // register DiamondWritable selectors[selectorIndex++] = IDiamondWritable.diamondCut.selector; erc165.setSupportedInterface(type(IDiamondWritable).interfaceId, true); // register DiamondReadable selectors[selectorIndex++] = IDiamondReadable.facets.selector; selectors[selectorIndex++] = IDiamondReadable .facetFunctionSelectors .selector; selectors[selectorIndex++] = IDiamondReadable.facetAddresses.selector; selectors[selectorIndex++] = IDiamondReadable.facetAddress.selector; erc165.setSupportedInterface(type(IDiamondReadable).interfaceId, true); // register ERC165 selectors[selectorIndex++] = IERC165.supportsInterface.selector; erc165.setSupportedInterface(type(IERC165).interfaceId, true); // register SafeOwnable selectors[selectorIndex++] = Ownable.owner.selector; selectors[selectorIndex++] = SafeOwnable.nomineeOwner.selector; selectors[selectorIndex++] = Ownable.transferOwnership.selector; selectors[selectorIndex++] = SafeOwnable.acceptOwnership.selector; erc165.setSupportedInterface(type(IERC173).interfaceId, true); // diamond cut FacetCut[] memory facetCuts = new FacetCut[](1); facetCuts[0] = FacetCut({ target: address(this), action: FacetCutAction.ADD, selectors: selectors }); _diamondCut(facetCuts, address(0), ''); // set owner OwnableStorage.layout().setOwner(msg.sender); } receive() external payable {} function _transferOwnership( address account ) internal virtual override(OwnableInternal, SafeOwnable) { super._transferOwnership(account); } /** * @inheritdoc DiamondFallback */ function _getImplementation() internal view override(DiamondBase, DiamondFallback) returns (address implementation) { implementation = super._getImplementation(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { OwnableInternal } from '../../../access/ownable/OwnableInternal.sol'; import { DiamondBaseStorage } from '../base/DiamondBaseStorage.sol'; import { IDiamondWritable } from './IDiamondWritable.sol'; import { DiamondWritableInternal } from './DiamondWritableInternal.sol'; /** * @title EIP-2535 "Diamond" proxy update contract */ abstract contract DiamondWritable is IDiamondWritable, DiamondWritableInternal, OwnableInternal { using DiamondBaseStorage for DiamondBaseStorage.Layout; /** * @inheritdoc IDiamondWritable */ function diamondCut( FacetCut[] calldata facetCuts, address target, bytes calldata data ) external onlyOwner { _diamondCut(facetCuts, target, data); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import { AddressUtils } from '../../../utils/AddressUtils.sol'; import { DiamondBaseStorage } from '../base/DiamondBaseStorage.sol'; import { IDiamondWritableInternal } from './IDiamondWritableInternal.sol'; abstract contract DiamondWritableInternal is IDiamondWritableInternal { using AddressUtils for address; bytes32 private constant CLEAR_ADDRESS_MASK = bytes32(uint256(0xffffffffffffffffffffffff)); bytes32 private constant CLEAR_SELECTOR_MASK = bytes32(uint256(0xffffffff << 224)); /** * @notice update functions callable on Diamond proxy * @param facetCuts array of structured Diamond facet update data * @param target optional recipient of initialization delegatecall * @param data optional initialization call data */ function _diamondCut( FacetCut[] memory facetCuts, address target, bytes memory data ) internal { DiamondBaseStorage.Layout storage l = DiamondBaseStorage.layout(); unchecked { uint256 originalSelectorCount = l.selectorCount; uint256 selectorCount = originalSelectorCount; bytes32 selectorSlot; // Check if last selector slot is not full if (selectorCount & 7 > 0) { // get last selectorSlot selectorSlot = l.selectorSlots[selectorCount >> 3]; } for (uint256 i; i < facetCuts.length; i++) { FacetCut memory facetCut = facetCuts[i]; FacetCutAction action = facetCut.action; if (facetCut.selectors.length == 0) revert DiamondWritable__SelectorNotSpecified(); if (action == FacetCutAction.ADD) { (selectorCount, selectorSlot) = _addFacetSelectors( l, selectorCount, selectorSlot, facetCut ); } else if (action == FacetCutAction.REPLACE) { _replaceFacetSelectors(l, facetCut); } else if (action == FacetCutAction.REMOVE) { (selectorCount, selectorSlot) = _removeFacetSelectors( l, selectorCount, selectorSlot, facetCut ); } } if (selectorCount != originalSelectorCount) { l.selectorCount = uint16(selectorCount); } // If last selector slot is not full if (selectorCount & 7 > 0) { l.selectorSlots[selectorCount >> 3] = selectorSlot; } emit DiamondCut(facetCuts, target, data); _initialize(target, data); } } function _addFacetSelectors( DiamondBaseStorage.Layout storage l, uint256 selectorCount, bytes32 selectorSlot, FacetCut memory facetCut ) internal returns (uint256, bytes32) { unchecked { if ( facetCut.target != address(this) && !facetCut.target.isContract() ) revert DiamondWritable__TargetHasNoCode(); for (uint256 i; i < facetCut.selectors.length; i++) { bytes4 selector = facetCut.selectors[i]; bytes32 oldFacet = l.facets[selector]; if (address(bytes20(oldFacet)) != address(0)) revert DiamondWritable__SelectorAlreadyAdded(); // add facet for selector l.facets[selector] = bytes20(facetCut.target) | bytes32(selectorCount); uint256 selectorInSlotPosition = (selectorCount & 7) << 5; // clear selector position in slot and add selector selectorSlot = (selectorSlot & ~(CLEAR_SELECTOR_MASK >> selectorInSlotPosition)) | (bytes32(selector) >> selectorInSlotPosition); // if slot is full then write it to storage if (selectorInSlotPosition == 224) { l.selectorSlots[selectorCount >> 3] = selectorSlot; selectorSlot = 0; } selectorCount++; } return (selectorCount, selectorSlot); } } function _removeFacetSelectors( DiamondBaseStorage.Layout storage l, uint256 selectorCount, bytes32 selectorSlot, FacetCut memory facetCut ) internal returns (uint256, bytes32) { unchecked { if (facetCut.target != address(0)) revert DiamondWritable__RemoveTargetNotZeroAddress(); uint256 selectorSlotCount = selectorCount >> 3; uint256 selectorInSlotIndex = selectorCount & 7; for (uint256 i; i < facetCut.selectors.length; i++) { bytes4 selector = facetCut.selectors[i]; bytes32 oldFacet = l.facets[selector]; if (address(bytes20(oldFacet)) == address(0)) revert DiamondWritable__SelectorNotFound(); if (address(bytes20(oldFacet)) == address(this)) revert DiamondWritable__SelectorIsImmutable(); if (selectorSlot == 0) { selectorSlotCount--; selectorSlot = l.selectorSlots[selectorSlotCount]; selectorInSlotIndex = 7; } else { selectorInSlotIndex--; } bytes4 lastSelector; uint256 oldSelectorsSlotCount; uint256 oldSelectorInSlotPosition; // adding a block here prevents stack too deep error { // replace selector with last selector in l.facets lastSelector = bytes4( selectorSlot << (selectorInSlotIndex << 5) ); if (lastSelector != selector) { // update last selector slot position info l.facets[lastSelector] = (oldFacet & CLEAR_ADDRESS_MASK) | bytes20(l.facets[lastSelector]); } delete l.facets[selector]; uint256 oldSelectorCount = uint16(uint256(oldFacet)); oldSelectorsSlotCount = oldSelectorCount >> 3; oldSelectorInSlotPosition = (oldSelectorCount & 7) << 5; } if (oldSelectorsSlotCount != selectorSlotCount) { bytes32 oldSelectorSlot = l.selectorSlots[ oldSelectorsSlotCount ]; // clears the selector we are deleting and puts the last selector in its place. oldSelectorSlot = (oldSelectorSlot & ~(CLEAR_SELECTOR_MASK >> oldSelectorInSlotPosition)) | (bytes32(lastSelector) >> oldSelectorInSlotPosition); // update storage with the modified slot l.selectorSlots[oldSelectorsSlotCount] = oldSelectorSlot; } else { // clears the selector we are deleting and puts the last selector in its place. selectorSlot = (selectorSlot & ~(CLEAR_SELECTOR_MASK >> oldSelectorInSlotPosition)) | (bytes32(lastSelector) >> oldSelectorInSlotPosition); } if (selectorInSlotIndex == 0) { delete l.selectorSlots[selectorSlotCount]; selectorSlot = 0; } } selectorCount = (selectorSlotCount << 3) | selectorInSlotIndex; return (selectorCount, selectorSlot); } } function _replaceFacetSelectors( DiamondBaseStorage.Layout storage l, FacetCut memory facetCut ) internal { unchecked { if (!facetCut.target.isContract()) revert DiamondWritable__TargetHasNoCode(); for (uint256 i; i < facetCut.selectors.length; i++) { bytes4 selector = facetCut.selectors[i]; bytes32 oldFacet = l.facets[selector]; address oldFacetAddress = address(bytes20(oldFacet)); if (oldFacetAddress == address(0)) revert DiamondWritable__SelectorNotFound(); if (oldFacetAddress == address(this)) revert DiamondWritable__SelectorIsImmutable(); if (oldFacetAddress == facetCut.target) revert DiamondWritable__ReplaceTargetIsIdentical(); // replace old facet address l.facets[selector] = (oldFacet & CLEAR_ADDRESS_MASK) | bytes20(facetCut.target); } } } function _initialize(address target, bytes memory data) private { if ((target == address(0)) != (data.length == 0)) revert DiamondWritable__InvalidInitializationParameters(); if (target != address(0)) { if (target != address(this)) { if (!target.isContract()) revert DiamondWritable__TargetHasNoCode(); } (bool success, ) = target.delegatecall(data); if (!success) { assembly { returndatacopy(0, 0, returndatasize()) revert(0, returndatasize()) } } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { IDiamondWritableInternal } from './IDiamondWritableInternal.sol'; /** * @title Diamond proxy upgrade interface * @dev see https://eips.ethereum.org/EIPS/eip-2535 */ interface IDiamondWritable is IDiamondWritableInternal { /** * @notice update diamond facets and optionally execute arbitrary initialization function * @param facetCuts array of structured Diamond facet update data * @param target optional target of initialization delegatecall * @param data optional initialization function call data */ function diamondCut( FacetCut[] calldata facetCuts, address target, bytes calldata data ) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; interface IDiamondWritableInternal { enum FacetCutAction { ADD, REPLACE, REMOVE } event DiamondCut(FacetCut[] facetCuts, address target, bytes data); error DiamondWritable__InvalidInitializationParameters(); error DiamondWritable__RemoveTargetNotZeroAddress(); error DiamondWritable__ReplaceTargetIsIdentical(); error DiamondWritable__SelectorAlreadyAdded(); error DiamondWritable__SelectorIsImmutable(); error DiamondWritable__SelectorNotFound(); error DiamondWritable__SelectorNotSpecified(); error DiamondWritable__TargetHasNoCode(); struct FacetCut { address target; FacetCutAction action; bytes4[] selectors; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; interface IProxy { error Proxy__ImplementationIsNotContract(); fallback() external payable; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { AddressUtils } from '../utils/AddressUtils.sol'; import { IProxy } from './IProxy.sol'; /** * @title Base proxy contract */ abstract contract Proxy is IProxy { using AddressUtils for address; /** * @notice delegate all calls to implementation contract * @dev reverts if implementation address contains no code, for compatibility with metamorphic contracts * @dev memory location in use by assembly may be unsafe in other contexts */ fallback() external payable virtual { address implementation = _getImplementation(); if (!implementation.isContract()) revert Proxy__ImplementationIsNotContract(); assembly { calldatacopy(0, 0, calldatasize()) let result := delegatecall( gas(), implementation, 0, calldatasize(), 0, 0 ) returndatacopy(0, 0, returndatasize()) switch result case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /** * @notice get logic implementation address * @return implementation address */ function _getImplementation() internal virtual returns (address); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import { UintUtils } from './UintUtils.sol'; library AddressUtils { using UintUtils for uint256; error AddressUtils__InsufficientBalance(); error AddressUtils__NotContract(); error AddressUtils__SendValueFailed(); function toString(address account) internal pure returns (string memory) { return uint256(uint160(account)).toHexString(20); } function isContract(address account) internal view returns (bool) { uint256 size; assembly { size := extcodesize(account) } return size > 0; } function sendValue(address payable account, uint256 amount) internal { (bool success, ) = account.call{ value: amount }(''); if (!success) revert AddressUtils__SendValueFailed(); } function functionCall( address target, bytes memory data ) internal returns (bytes memory) { return functionCall(target, data, 'AddressUtils: failed low-level call'); } function functionCall( address target, bytes memory data, string memory error ) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, error); } function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue( target, data, value, 'AddressUtils: failed low-level call with value' ); } function functionCallWithValue( address target, bytes memory data, uint256 value, string memory error ) internal returns (bytes memory) { if (value > address(this).balance) revert AddressUtils__InsufficientBalance(); return _functionCallWithValue(target, data, value, error); } /** * @notice execute arbitrary external call with limited gas usage and amount of copied return data * @dev derived from https://github.com/nomad-xyz/ExcessivelySafeCall (MIT License) * @param target recipient of call * @param gasAmount gas allowance for call * @param value native token value to include in call * @param maxCopy maximum number of bytes to copy from return data * @param data encoded call data * @return success whether call is successful * @return returnData copied return data */ function excessivelySafeCall( address target, uint256 gasAmount, uint256 value, uint16 maxCopy, bytes memory data ) internal returns (bool success, bytes memory returnData) { returnData = new bytes(maxCopy); assembly { // execute external call via assembly to avoid automatic copying of return data success := call( gasAmount, target, value, add(data, 0x20), mload(data), 0, 0 ) // determine whether to limit amount of data to copy let toCopy := returndatasize() if gt(toCopy, maxCopy) { toCopy := maxCopy } // store the length of the copied bytes mstore(returnData, toCopy) // copy the bytes from returndata[0:toCopy] returndatacopy(add(returnData, 0x20), 0, toCopy) } } function _functionCallWithValue( address target, bytes memory data, uint256 value, string memory error ) private returns (bytes memory) { if (!isContract(target)) revert AddressUtils__NotContract(); (bool success, bytes memory returnData) = target.call{ value: value }( data ); if (success) { return returnData; } else if (returnData.length > 0) { assembly { let returnData_size := mload(returnData) revert(add(32, returnData), returnData_size) } } else { revert(error); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; /** * @title utility functions for uint256 operations * @dev derived from https://github.com/OpenZeppelin/openzeppelin-contracts/ (MIT license) */ library UintUtils { error UintUtils__InsufficientHexLength(); bytes16 private constant HEX_SYMBOLS = '0123456789abcdef'; function add(uint256 a, int256 b) internal pure returns (uint256) { return b < 0 ? sub(a, -b) : a + uint256(b); } function sub(uint256 a, int256 b) internal pure returns (uint256) { return b < 0 ? add(a, -b) : a - uint256(b); } function toString(uint256 value) internal pure returns (string memory) { if (value == 0) { return '0'; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return '0x00'; } uint256 length = 0; for (uint256 temp = value; temp != 0; temp >>= 8) { unchecked { length++; } } return toHexString(value, length); } function toHexString( uint256 value, uint256 length ) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = '0'; buffer[1] = 'x'; unchecked { for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = HEX_SYMBOLS[value & 0xf]; value >>= 4; } } if (value != 0) revert UintUtils__InsufficientHexLength(); return string(buffer); } }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[],"name":"DiamondWritable__InvalidInitializationParameters","type":"error"},{"inputs":[],"name":"DiamondWritable__RemoveTargetNotZeroAddress","type":"error"},{"inputs":[],"name":"DiamondWritable__ReplaceTargetIsIdentical","type":"error"},{"inputs":[],"name":"DiamondWritable__SelectorAlreadyAdded","type":"error"},{"inputs":[],"name":"DiamondWritable__SelectorIsImmutable","type":"error"},{"inputs":[],"name":"DiamondWritable__SelectorNotFound","type":"error"},{"inputs":[],"name":"DiamondWritable__SelectorNotSpecified","type":"error"},{"inputs":[],"name":"DiamondWritable__TargetHasNoCode","type":"error"},{"inputs":[],"name":"ERC165Storage__InvalidInterfaceId","type":"error"},{"inputs":[],"name":"Ownable__NotOwner","type":"error"},{"inputs":[],"name":"Ownable__NotTransitiveOwner","type":"error"},{"inputs":[],"name":"Proxy__ImplementationIsNotContract","type":"error"},{"inputs":[],"name":"SafeOwnable__NotNomineeOwner","type":"error"},{"anonymous":false,"inputs":[{"components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"enum IDiamondWritableInternal.FacetCutAction","name":"action","type":"uint8"},{"internalType":"bytes4[]","name":"selectors","type":"bytes4[]"}],"indexed":false,"internalType":"struct IDiamondWritableInternal.FacetCut[]","name":"facetCuts","type":"tuple[]"},{"indexed":false,"internalType":"address","name":"target","type":"address"},{"indexed":false,"internalType":"bytes","name":"data","type":"bytes"}],"name":"DiamondCut","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"enum IDiamondWritableInternal.FacetCutAction","name":"action","type":"uint8"},{"internalType":"bytes4[]","name":"selectors","type":"bytes4[]"}],"internalType":"struct IDiamondWritableInternal.FacetCut[]","name":"facetCuts","type":"tuple[]"},{"internalType":"address","name":"target","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"diamondCut","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"selector","type":"bytes4"}],"name":"facetAddress","outputs":[{"internalType":"address","name":"facet","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"facetAddresses","outputs":[{"internalType":"address[]","name":"addresses","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"facet","type":"address"}],"name":"facetFunctionSelectors","outputs":[{"internalType":"bytes4[]","name":"selectors","type":"bytes4[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"facets","outputs":[{"components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"bytes4[]","name":"selectors","type":"bytes4[]"}],"internalType":"struct IDiamondReadable.Facet[]","name":"diamondFacets","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getFallbackAddress","outputs":[{"internalType":"address","name":"fallbackAddress","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nomineeOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"fallbackAddress","type":"address"}],"name":"setFallbackAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]
Contract Creation Code
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