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Contract Name:
LazySovereignNFTRoyaltyGuardDeadmanTrigger
Compiler Version
v0.8.15+commit.e14f2714
Optimization Enabled:
Yes with 200 runs
Other Settings:
london EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// contracts/token/ERC721/sovereign/SovereignNFT.sol // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "royalty-guard/extensions/RoyaltyGuardDeadmanTrigger.sol"; import "../LazySovereignNFT.sol"; contract LazySovereignNFTRoyaltyGuardDeadmanTrigger is LazySovereignNFT, RoyaltyGuardDeadmanTrigger { /*////////////////////////////////////////////////////////////////////////// ERC165 LOGIC //////////////////////////////////////////////////////////////////////////*/ /// @dev See {IERC165-supportsInterface}. function supportsInterface(bytes4 _interfaceId) public view virtual override(LazySovereignNFT, RoyaltyGuard) returns (bool) { return RoyaltyGuard.supportsInterface(_interfaceId) || LazySovereignNFT.supportsInterface(_interfaceId); } /*////////////////////////////////////////////////////////////////////////// RoyaltyGuard LOGIC //////////////////////////////////////////////////////////////////////////*/ /// @inheritdoc RoyaltyGuard function hasAdminPermission(address _addr) public view virtual override(IRoyaltyGuard, RoyaltyGuard) returns (bool) { return _addr == owner(); } /// @dev Guards {approve} based on the type of list and depending if {_spender} is on the list. function approve(address _spender, uint256 _id) public virtual override checkList(_spender) { super.approve(_spender, _id); } /// @dev Guards {setApprovalForAll} based on the type of list and depending if {_operator} is on the list. function setApprovalForAll(address _operator, bool _approved) public virtual override checkList(_operator) { super.setApprovalForAll(_operator, _approved); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.15; import {IRoyaltyGuardDeadmanTrigger} from "../extensions/IRoyaltyGuardDeadmanTrigger.sol"; import {IRoyaltyGuard, RoyaltyGuard} from "../RoyaltyGuard.sol"; import {EnumerableSet} from "openzeppelin-contracts/utils/structs/EnumerableSet.sol"; import {ERC165} from "openzeppelin-contracts/utils/introspection/ERC165.sol"; /// @title RoyaltyGuard /// @author highland, koloz, van arman /// @notice An abstract contract with the necessary functions, structures, modifiers to ensure royalties are paid. /// @dev Inherriting this contract requires implementing {hasAdminPermission} and connecting the desired functions to the {checkList} modifier. abstract contract RoyaltyGuardDeadmanTrigger is IRoyaltyGuardDeadmanTrigger, RoyaltyGuard { /*////////////////////////////////////////////////////////////////////////// Private Contract Storage //////////////////////////////////////////////////////////////////////////*/ uint256 private deadmanListTriggerAfterDatetime; /*////////////////////////////////////////////////////////////////////////// Admin Functions //////////////////////////////////////////////////////////////////////////*/ /// @dev Only the contract owner can call this function. /// @inheritdoc IRoyaltyGuardDeadmanTrigger function setDeadmanListTriggerRenewalDuration(uint256 _numYears) external virtual onlyAdmin { _setDeadmanTriggerRenewalInYears(_numYears); } /*////////////////////////////////////////////////////////////////////////// Public Write Functions //////////////////////////////////////////////////////////////////////////*/ /// @dev Can only be called if deadmanListTriggerAfterDatetime is in the past. /// @inheritdoc IRoyaltyGuardDeadmanTrigger function activateDeadmanListTrigger() external virtual { if (deadmanListTriggerAfterDatetime > block.timestamp) revert IRoyaltyGuardDeadmanTrigger.DeadmanTriggerStillActive(); _setListType(IRoyaltyGuard.ListType.OFF); emit DeadmanTriggerActivated(msg.sender); } /*////////////////////////////////////////////////////////////////////////// Public Read Functions //////////////////////////////////////////////////////////////////////////*/ /// @inheritdoc IRoyaltyGuardDeadmanTrigger function getDeadmanTriggerAvailableDatetime() external virtual view returns (uint256) { return deadmanListTriggerAfterDatetime; } /*////////////////////////////////////////////////////////////////////////// Internal Functions //////////////////////////////////////////////////////////////////////////*/ /// @dev Internal method to set deadman trigger datetime. Main usage is constructor. function _setDeadmanTriggerRenewalInYears(uint256 _numYears) internal { uint256 newDatetime = block.timestamp + _numYears * 365 days; emit DeadmanTriggerDatetimeUpdated(msg.sender, deadmanListTriggerAfterDatetime, newDatetime); deadmanListTriggerAfterDatetime = newDatetime; } }
// contracts/token/ERC721/sovereign/SovereignNFT.sol // SPDX-License-Identifier: MIT pragma solidity 0.8.15; import "openzeppelin-contracts-upgradeable/token/ERC721/ERC721Upgradeable.sol"; import "openzeppelin-contracts-upgradeable/token/ERC721/extensions/ERC721BurnableUpgradeable.sol"; import "openzeppelin-contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol"; import "openzeppelin-contracts-upgradeable/access/OwnableUpgradeable.sol"; import "openzeppelin-contracts-upgradeable/utils/CountersUpgradeable.sol"; import "openzeppelin-contracts-upgradeable/utils/math/SafeMathUpgradeable.sol"; import "../../../extensions/ITokenCreator.sol"; import "../../../extensions/ERC2981Upgradeable.sol"; /** * @title LazySovereignNFT * @dev This contract implements an ERC721 compliant NFT (Non-Fungible Token) with lazy minting. */ contract LazySovereignNFT is OwnableUpgradeable, ERC165Upgradeable, ERC721Upgradeable, ITokenCreator, ERC721BurnableUpgradeable, ERC2981Upgradeable { using SafeMathUpgradeable for uint256; using StringsUpgradeable for uint256; using CountersUpgradeable for CountersUpgradeable.Counter; ///////////////////////////////////////////////////////////////////////////// // Structs ///////////////////////////////////////////////////////////////////////////// struct MintConfig { uint256 numberOfTokens; string baseURI; bool lockedMetadata; } ///////////////////////////////////////////////////////////////////////////// // Storage ///////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////// // Public ////////////////////////////////////////////// // Disabled flag bool public disabled; // Maximum number of tokens that can be minted uint256 public maxTokens; ////////////////////////////////////////////// // Private ////////////////////////////////////////////// // Mapping from token ID to approved address mapping(uint256 => address) private tokenApprovals; // Mapping from addresses that can mint outside of the owner mapping(address => bool) private minterAddresses; // Optional mapping for token URIs mapping(uint256 => string) private _tokenURIs; // Counter to keep track of the current token id. CountersUpgradeable.Counter private tokenIdCounter; // Mint batches for batch minting MintConfig private mintConfig; ///////////////////////////////////////////////////////////////////////////// // Events ///////////////////////////////////////////////////////////////////////////// // Emits when the contract is disabled. event ContractDisabled(address indexed user); // Emits when prepared for minting. event PrepareMint(uint256 indexed numberOfTokens, string baseURI); // Emits when metadata is locked. event MetadataLocked(string baseURI); // Emits when metadata is updated. event MetadataUpdated(string baseURI); // Emits when token URI is updated. event TokenURIUpdated(uint256 indexed tokenId, string metadataUri); ///////////////////////////////////////////////////////////////////////////// // Init ///////////////////////////////////////////////////////////////////////////// /** * @dev Contract initialization function. * @param _name The name of the NFT contract. * @param _symbol The symbol of the NFT contract. * @param _creator The address of the contract creator. * @param _maxTokens The maximum number of tokens that can be minted. */ function init( string calldata _name, string calldata _symbol, address _creator, uint256 _maxTokens ) public initializer { require(_creator != address(0), "creator cannot be null address"); _setDefaultRoyaltyPercentage(10); disabled = false; maxTokens = _maxTokens; __Ownable_init(); __ERC721_init(_name, _symbol); __ERC165_init(); __ERC2981__init(); _setDefaultRoyaltyReceiver(_creator); super.transferOwnership(_creator); } ///////////////////////////////////////////////////////////////////////////// // Modifiers ///////////////////////////////////////////////////////////////////////////// /** * @dev Modifier to check if the contract is not disabled. */ modifier ifNotDisabled() { require(!disabled, "Contract must not be disabled."); _; } ///////////////////////////////////////////////////////////////////////////// // Write Functions ///////////////////////////////////////////////////////////////////////////// /** * @dev Set a minter for the contract * @param _minter address of the minter. * @param _isMinter bool of whether the address is a minter. */ function setMinterApproval( address _minter, bool _isMinter ) public onlyOwner ifNotDisabled { minterAddresses[_minter] = _isMinter; } /** * @dev Prepare a minting batch with a specified base URI and number of tokens. * @param _baseURI The base URI for token metadata. * @param _numberOfTokens The number of tokens to prepare for minting. */ function prepareMint( string calldata _baseURI, uint256 _numberOfTokens ) public onlyOwner ifNotDisabled { _prepareMint(_baseURI, _numberOfTokens); } /** * @dev Prepare a minting batch with a specified base URI and number of tokens, and assign a minter address. * @param _baseURI The base URI for token metadata. * @param _numberOfTokens The number of tokens to prepare for minting. * @param _minter The address of the minter. */ function prepareMintWithMinter( string calldata _baseURI, uint256 _numberOfTokens, address _minter ) public onlyOwner ifNotDisabled { _prepareMint(_baseURI, _numberOfTokens); minterAddresses[_minter] = true; } /** * @dev Mint a new token to the specified receiver. * @param _receiver The address of the token receiver. * @return uint256 Token Id of the new token. */ function mintTo( address _receiver ) external ifNotDisabled returns (uint256) { require( msg.sender == owner() || minterAddresses[msg.sender], "lazyMint::only owner or approved minter can mint" ); return _createToken( _receiver, getDefaultRoyaltyPercentage(), getDefaultRoyaltyReceiver() ); } /** * @dev Delete a token with the given ID. * @param _tokenId The ID of the token to delete. */ function deleteToken(uint256 _tokenId) public { require( ownerOf(_tokenId) == msg.sender, "Must be the owner of the token." ); burn(_tokenId); } /** * @dev Disable the contract, preventing further minting. */ function disableContract() public onlyOwner { disabled = true; emit ContractDisabled(msg.sender); } /** * @dev Set the default royalty receiver address. * @param _receiver The address of the default royalty receiver. */ function setDefaultRoyaltyReceiver(address _receiver) external onlyOwner { _setDefaultRoyaltyReceiver(_receiver); } /** * @dev Set a specific royalty receiver address for a token. * @param _receiver The address of the royalty receiver. * @param _tokenId The ID of the token. */ function setRoyaltyReceiverForToken( address _receiver, uint256 _tokenId ) external onlyOwner { royaltyReceivers[_tokenId] = _receiver; } /** * @dev Update the base URI. * @param _baseURI The new base URI. */ function updateBaseURI(string calldata _baseURI) external onlyOwner { require( !mintConfig.lockedMetadata, "updateBaseURI::metadata is locked" ); mintConfig.baseURI = _baseURI; emit MetadataUpdated(_baseURI); } /** * @dev Update the token metadata URI. * @param _metadataUri The new metadata URI. */ function updateTokenURI( uint256 _tokenId, string calldata _metadataUri ) external onlyOwner { require( !mintConfig.lockedMetadata, "updateTokenURI::metadata is locked" ); _tokenURIs[_tokenId] = _metadataUri; emit TokenURIUpdated(_tokenId, _metadataUri); } /** * @dev Lock the metadata to prevent further updates. */ function lockBaseURI() external onlyOwner { emit MetadataLocked(mintConfig.baseURI); mintConfig.lockedMetadata = true; } ///////////////////////////////////////////////////////////////////////////// // Read Functions ///////////////////////////////////////////////////////////////////////////// /** * @dev Checks if the supplied address is approved for minting * @param _address The address of the minter. * @return bool, whether the address is approved for minting. */ function isApprovedMinter(address _address) public view returns (bool) { return minterAddresses[_address]; } /** * @dev Get the address of the token creator for a given token ID. * @param _tokenId The ID of the token. * @return address of the token creator. */ function tokenCreator( uint256 _tokenId ) public view override returns (address payable) { return payable(owner()); } /** * @dev Get the current minting configuration. * @return mintConfig the mint config. */ function getMintConfig() public view returns (MintConfig memory) { return mintConfig; } /** * @dev Get the token URI for a specific token. If a token has a set URI, * it will return that, otherwise it will return the token URI computed from * the base URI. * @param _tokenId The ID of the token. * @return The token's URI. */ function tokenURI( uint256 _tokenId ) public view virtual override returns (string memory) { if (bytes(_tokenURIs[_tokenId]).length > 0) { return _tokenURIs[_tokenId]; } return string( abi.encodePacked( mintConfig.baseURI, "/", _tokenId.toString(), ".json" ) ); } /** * @dev Get the total supply of tokens in existence. * @return The total supply of tokens. */ function totalSupply() public view virtual returns (uint256) { return tokenIdCounter.current(); } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface( bytes4 interfaceId ) public view virtual override(ERC165Upgradeable, ERC2981Upgradeable, ERC721Upgradeable) returns (bool) { return interfaceId == type(ITokenCreator).interfaceId || ERC165Upgradeable.supportsInterface(interfaceId) || ERC2981Upgradeable.supportsInterface(interfaceId) || ERC721Upgradeable.supportsInterface(interfaceId); } ///////////////////////////////////////////////////////////////////////////// // Internal Functions ///////////////////////////////////////////////////////////////////////////// /** * @dev Create a new token and assign it to the specified recipient. * @param _to The address of the token recipient. * @param _royaltyPercentage The royalty percentage for the token. * @param _royaltyReceiver The address of the royalty receiver for the token. * @return The ID of the newly created token. */ function _createToken( address _to, uint256 _royaltyPercentage, address _royaltyReceiver ) internal returns (uint256) { tokenIdCounter.increment(); uint256 tokenId = tokenIdCounter.current(); require(tokenId <= maxTokens, "_createToken::exceeded maxTokens"); _safeMint(_to, tokenId); _setRoyaltyPercentage(tokenId, _royaltyPercentage); _setRoyaltyReceiver(tokenId, _royaltyReceiver); return tokenId; } /** * @dev Prepare a minting batch with a specified base URI and number of tokens. * @param _baseURI The base URI for token metadata. * @param _numberOfTokens The number of tokens to prepare for minting. */ function _prepareMint( string calldata _baseURI, uint256 _numberOfTokens ) internal { require( _numberOfTokens <= maxTokens, "_prepareMint::exceeded maxTokens" ); require( tokenIdCounter.current() == 0, "_prepareMint::can only prepare mint with 0 tokens" ); mintConfig = MintConfig(_numberOfTokens, _baseURI, false); emit PrepareMint(_numberOfTokens, _baseURI); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.15; import {IRoyaltyGuard} from "../IRoyaltyGuard.sol"; /// @title IRoyaltyGuard /// @author highland, koloz, van arman /// @notice Interface for a deadman trigger extension to IRoyaltyGuard interface IRoyaltyGuardDeadmanTrigger is IRoyaltyGuard { /*////////////////////////////////////////////////////////////////////////// Events //////////////////////////////////////////////////////////////////////////*/ /// @notice Emitted when deadman trigger datetime has been updated. event DeadmanTriggerDatetimeUpdated(address indexed _updater, uint256 _oldDatetime, uint256 _newDatetime); /// @notice Emitted when the deadman switch is activated. event DeadmanTriggerActivated(address indexed _activator); /*////////////////////////////////////////////////////////////////////////// Custom Errors //////////////////////////////////////////////////////////////////////////*/ /// @notice Emitted when the deadman trigger datetime threshold hasnt passed but tries to get called. error DeadmanTriggerStillActive(); /*////////////////////////////////////////////////////////////////////////// External Write Functions //////////////////////////////////////////////////////////////////////////*/ /// @notice Sets the deadman list trigger for the specified number of years from current block timestamp /// @param _numYears to renew the trigger for. function setDeadmanListTriggerRenewalDuration(uint256 _numYears) external; /// @notice Triggers the deadman switch for the list function activateDeadmanListTrigger() external; /// @notice The datetime threshold after which the deadman trigger can be called by anyone. /// @return uint256 denoting unix epoch time after which the deadman trigger can be activated. function getDeadmanTriggerAvailableDatetime() external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.15; import {IRoyaltyGuard} from "./IRoyaltyGuard.sol"; import {EnumerableSet} from "openzeppelin-contracts/utils/structs/EnumerableSet.sol"; import {ERC165} from "openzeppelin-contracts/utils/introspection/ERC165.sol"; /// @title RoyaltyGuard /// @author highland, koloz, van arman /// @notice An abstract contract with the necessary functions, structures, modifiers to ensure royalties are paid. /// @dev Inherriting this contract requires implementing {hasAdminPermission} and connecting the desired functions to the {checkList} modifier. abstract contract RoyaltyGuard is IRoyaltyGuard, ERC165 { using EnumerableSet for EnumerableSet.AddressSet; /*////////////////////////////////////////////////////////////////////////// Private Contract Storage //////////////////////////////////////////////////////////////////////////*/ mapping(IRoyaltyGuard.ListType => EnumerableSet.AddressSet) private list; IRoyaltyGuard.ListType private listType; /*////////////////////////////////////////////////////////////////////////// Modifiers //////////////////////////////////////////////////////////////////////////*/ /// @notice Checks if an address is part the current, in-use list /// @dev depending on list type and if the address is on the list will throw {IRoyaltyGuard.Unauthorized} modifier checkList(address _addr) { if (listType == IRoyaltyGuard.ListType.ALLOW) { if (!list[IRoyaltyGuard.ListType.ALLOW].contains(_addr)) revert IRoyaltyGuard.Unauthorized(); } else if (listType == IRoyaltyGuard.ListType.DENY) { if (list[IRoyaltyGuard.ListType.DENY].contains(_addr)) revert IRoyaltyGuard.Unauthorized(); } _; } /// @notice Checks to see if the msg.sender has admin permissions. /// @dev {hasAdminPermissions} is an abstract function that the implementing contract will define. /// @dev if msg.sender doesnt have permission will throw {IRoyaltyGuard.MustBeAdmin} modifier onlyAdmin() { if (!hasAdminPermission(msg.sender)) revert IRoyaltyGuard.MustBeAdmin(); _; } /*////////////////////////////////////////////////////////////////////////// Admin Functions //////////////////////////////////////////////////////////////////////////*/ /// @dev Only the contract owner can call this function. /// @inheritdoc IRoyaltyGuard function toggleListType(IRoyaltyGuard.ListType _newListType) external virtual onlyAdmin { _setListType(_newListType); } /// @dev Only the contract owner can call this function. /// @dev Cannot add to the OFF list /// @inheritdoc IRoyaltyGuard function batchAddAddressToRoyaltyList(IRoyaltyGuard.ListType _listType, address[] calldata _addrs) external virtual onlyAdmin { if (_listType == IRoyaltyGuard.ListType.OFF) revert IRoyaltyGuard.CantAddToOFFList(); _batchUpdateList(_listType, _addrs, true); } /// @dev Only the contract owner can call this function. /// @inheritdoc IRoyaltyGuard function batchRemoveAddressToRoyaltyList(IRoyaltyGuard.ListType _listType, address[] calldata _addrs) external virtual onlyAdmin { _batchUpdateList(_listType, _addrs, false); } /// @dev Only the contract owner can call this function. /// @inheritdoc IRoyaltyGuard function clearList(IRoyaltyGuard.ListType _listType) external virtual onlyAdmin { delete list[_listType]; emit ListCleared(msg.sender, _listType); } /*////////////////////////////////////////////////////////////////////////// Public Read Functions //////////////////////////////////////////////////////////////////////////*/ /// @inheritdoc IRoyaltyGuard function getList(IRoyaltyGuard.ListType _listType) external virtual view returns (address[] memory) { return list[_listType].values(); } /// @inheritdoc IRoyaltyGuard function getInUseList() external virtual view returns (address[] memory) { return list[listType].values(); } /// @inheritdoc IRoyaltyGuard function isOperatorInList(address _operator) external virtual view returns (bool) { return list[listType].contains(_operator); } /// @inheritdoc IRoyaltyGuard function getListType() external virtual view returns (IRoyaltyGuard.ListType) { return listType; } /// @dev used in the {onlyAdmin} modifier /// @inheritdoc IRoyaltyGuard function hasAdminPermission(address _addr) public virtual view returns (bool); /*////////////////////////////////////////////////////////////////////////// ERC165 Overrides //////////////////////////////////////////////////////////////////////////*/ /// @inheritdoc ERC165 function supportsInterface(bytes4 _interfaceId) public virtual view override returns (bool) { return _interfaceId == type(IRoyaltyGuard).interfaceId || super.supportsInterface(_interfaceId); } /*////////////////////////////////////////////////////////////////////////// Internal Functions //////////////////////////////////////////////////////////////////////////*/ /// @dev Internal method to set list type. Main usage is constructor. function _setListType(IRoyaltyGuard.ListType _newListType) internal { emit ListTypeUpdated(msg.sender, listType, _newListType); listType = _newListType; } /// @dev Internal method to update a certain list. Main usage is constructor. function _batchUpdateList(IRoyaltyGuard.ListType _listType, address[] memory _addrs, bool _onList) internal { if (_listType != IRoyaltyGuard.ListType.OFF) { for (uint256 i = 0; i < _addrs.length; i++) { if (_onList) { list[_listType].add(_addrs[i]); emit AddressAddedToList(msg.sender, _addrs[i], _listType); } else { list[_listType].remove(_addrs[i]); emit AddressRemovedList(msg.sender, _addrs[i], _listType); } } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (utils/structs/EnumerableSet.sol) pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastValue; // Update the index for the moved value set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { return _values(set._inner); } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; assembly { result := store } return result; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721Upgradeable.sol"; import "./IERC721ReceiverUpgradeable.sol"; import "./extensions/IERC721MetadataUpgradeable.sol"; import "../../utils/AddressUpgradeable.sol"; import "../../utils/ContextUpgradeable.sol"; import "../../utils/StringsUpgradeable.sol"; import "../../utils/introspection/ERC165Upgradeable.sol"; import "../../proxy/utils/Initializable.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable { using AddressUpgradeable for address; using StringsUpgradeable for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ function __ERC721_init(string memory name_, string memory symbol_) internal onlyInitializing { __ERC721_init_unchained(name_, symbol_); } function __ERC721_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) { return interfaceId == type(IERC721Upgradeable).interfaceId || interfaceId == type(IERC721MetadataUpgradeable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: address zero is not a valid owner"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overridden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721Upgradeable.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721Upgradeable.ownerOf(tokenId); return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721Upgradeable.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721ReceiverUpgradeable.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[44] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Burnable.sol) pragma solidity ^0.8.0; import "../ERC721Upgradeable.sol"; import "../../../utils/ContextUpgradeable.sol"; import "../../../proxy/utils/Initializable.sol"; /** * @title ERC721 Burnable Token * @dev ERC721 Token that can be irreversibly burned (destroyed). */ abstract contract ERC721BurnableUpgradeable is Initializable, ContextUpgradeable, ERC721Upgradeable { function __ERC721Burnable_init() internal onlyInitializing { } function __ERC721Burnable_init_unchained() internal onlyInitializing { } /** * @dev Burns `tokenId`. See {ERC721-_burn}. * * Requirements: * * - The caller must own `tokenId` or be an approved operator. */ function burn(uint256 tokenId) public virtual { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved"); _burn(tokenId); } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165Upgradeable.sol"; import "../../proxy/utils/Initializable.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable { function __ERC165_init() internal onlyInitializing { } function __ERC165_init_unchained() internal onlyInitializing { } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165Upgradeable).interfaceId; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/ContextUpgradeable.sol"; import "../proxy/utils/Initializable.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function __Ownable_init() internal onlyInitializing { __Ownable_init_unchained(); } function __Ownable_init_unchained() internal onlyInitializing { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Counters.sol) pragma solidity ^0.8.0; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` */ library CountersUpgradeable { struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { unchecked { counter._value += 1; } } function decrement(Counter storage counter) internal { uint256 value = counter._value; require(value > 0, "Counter: decrement overflow"); unchecked { counter._value = value - 1; } } function reset(Counter storage counter) internal { counter._value = 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/math/SafeMath.sol) pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler * now has built in overflow checking. */ library SafeMathUpgradeable { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the subtraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface ITokenCreator { // bytes4(keccak256(tokenCreator(uint256))) == 0x40c1a064 function tokenCreator(uint256 _tokenId) external view returns (address payable); }
// contracts/royalty/ERC2981.sol // SPDX-License-Identifier: MIT pragma solidity ^0.8.10; import "openzeppelin-contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol"; import "openzeppelin-contracts-upgradeable/utils/math/SafeMathUpgradeable.sol"; import "./IERC2981.sol"; abstract contract ERC2981Upgradeable is IERC2981, ERC165Upgradeable { using SafeMathUpgradeable for uint256; // bytes4(keccak256("royaltyInfo(uint256,uint256)")) == 0x2a55205a bytes4 private constant _INTERFACE_ID_ERC2981 = 0x2a55205a; address private defaultRoyaltyReceiver; uint256 private defaultRoyaltyPercentage; mapping(uint256 => address) royaltyReceivers; mapping(uint256 => uint256) royaltyPercentages; constructor() {} function __ERC2981__init() internal onlyInitializing { __ERC165_init(); } function royaltyInfo(uint256 _tokenId, uint256 _salePrice) public view virtual override returns (address receiver, uint256 royaltyAmount) { receiver = royaltyReceivers[_tokenId] != address(0) ? royaltyReceivers[_tokenId] : defaultRoyaltyReceiver; royaltyAmount = _salePrice .mul( royaltyPercentages[_tokenId] != 0 ? royaltyPercentages[_tokenId] : defaultRoyaltyPercentage ) .div(100); } function _setDefaultRoyaltyReceiver(address _receiver) internal { defaultRoyaltyReceiver = _receiver; } function _setRoyaltyReceiver(uint256 _tokenId, address _newReceiver) internal { royaltyReceivers[_tokenId] = _newReceiver; } function _setRoyaltyPercentage(uint256 _tokenId, uint256 _percentage) internal { royaltyPercentages[_tokenId] = _percentage; } function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId); } function _setDefaultRoyaltyPercentage(uint256 _percentage) internal { defaultRoyaltyPercentage = _percentage; } function getDefaultRoyaltyReceiver() public view returns (address) { return defaultRoyaltyReceiver; } function getDefaultRoyaltyPercentage() public view returns (uint256) { return defaultRoyaltyPercentage; } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.15; /// @title IRoyaltyGuard /// @author highland, koloz, van arman /// @notice Interface for the royalty guard with all the fields, errors, functions, etc. interface IRoyaltyGuard { /*////////////////////////////////////////////////////////////////////////// Enums //////////////////////////////////////////////////////////////////////////*/ /// @notice An enum denoting 3 types for a list: OFF (0), ALLOW (1), DENY (2) enum ListType { OFF, ALLOW, DENY } /*////////////////////////////////////////////////////////////////////////// Events //////////////////////////////////////////////////////////////////////////*/ /// @notice Emitted when the list type is updated. event ListTypeUpdated(address indexed _updater, ListType indexed _oldListType, ListType indexed _newListType); /// @notice Emitted when an address is added to a list. event AddressAddedToList(address indexed _updater, address indexed _addedAddr, ListType indexed _ListType); /// @notice Emitted when an address is removed from a list. event AddressRemovedList(address indexed _updater, address indexed _removedAddr, ListType indexed _ListType); /// @notice Emitted when a list is cleared. event ListCleared(address indexed _updater, ListType _listType); /*////////////////////////////////////////////////////////////////////////// Custom Errors //////////////////////////////////////////////////////////////////////////*/ /// @notice Emitted when an unauthorized party tries to call a specific function. error Unauthorized(); /// @notice Emitted when trying to add an address to a list with type OFF. error CantAddToOFFList(); /// @notice Emitted when an admin only function tries to be called by a non-admin. error MustBeAdmin(); /*////////////////////////////////////////////////////////////////////////// External Write Functions //////////////////////////////////////////////////////////////////////////*/ /// @notice Toggles the list type between ALLOW, DENY, or OFF /// @param _newListType to be applied to the list. Options are 0 (OFF), 1 (ALLOW), 2 (DENY) function toggleListType(IRoyaltyGuard.ListType _newListType) external; /// @notice Adds a list of addresses to the specified list. /// @param _listType that addresses are being added to /// @param _addrs being added to the designated list function batchAddAddressToRoyaltyList(IRoyaltyGuard.ListType _listType, address[] calldata _addrs) external; /// @notice Removes a list of addresses to the specified list. /// @param _listType that addresses are being removed from /// @param _addrs being removed from the designated list function batchRemoveAddressToRoyaltyList(IRoyaltyGuard.ListType _listType, address[] calldata _addrs) external; /// @notice Clears an entire list. /// @param _listType of list being cleared. function clearList(IRoyaltyGuard.ListType _listType) external; /*////////////////////////////////////////////////////////////////////////// External Read Functions //////////////////////////////////////////////////////////////////////////*/ /// @notice Returns the set of addresses on a list. /// @param _listType of list being retrieved. /// @return list of addresses on a given list. function getList(IRoyaltyGuard.ListType _listType) external view returns (address[] memory); /// @notice Returns the set of addresses on a list. /// @return list of addresses on a given list. function getInUseList() external view returns (address[] memory); /// @notice Returns if the supplied operator address in part of the current in use list. /// @param _operator address being checked. /// @return bool relating to if the operator is on the list. function isOperatorInList(address _operator) external view returns (bool); /// @notice States whether or not an address has admin permission. /// @return bool denoting if _addr has admin permission. function hasAdminPermission(address _addr) external view returns (bool); /// @notice Returns the ListType currently being used; /// @return ListType of the list. Values are: 0 (OFF), 1 (ALLOW), 2 (DENY) function getListType() external view returns (ListType); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165Upgradeable.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721Upgradeable is IERC165Upgradeable { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721ReceiverUpgradeable { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721Upgradeable.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721MetadataUpgradeable is IERC721Upgradeable { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { } function __Context_init_unchained() internal onlyInitializing { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library StringsUpgradeable { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol 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); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed 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"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.0; import "../../utils/AddressUpgradeable.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ``` * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. * @custom:oz-retyped-from bool */ uint8 private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint8 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`. */ modifier initializer() { bool isTopLevelCall = _setInitializedVersion(1); if (isTopLevelCall) { _initializing = true; } _; if (isTopLevelCall) { _initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original * initialization step. This is essential to configure modules that are added through upgrades and that require * initialization. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. */ modifier reinitializer(uint8 version) { bool isTopLevelCall = _setInitializedVersion(version); if (isTopLevelCall) { _initializing = true; } _; if (isTopLevelCall) { _initializing = false; emit Initialized(version); } } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. */ function _disableInitializers() internal virtual { _setInitializedVersion(type(uint8).max); } function _setInitializedVersion(uint8 version) private returns (bool) { // If the contract is initializing we ignore whether _initialized is set in order to support multiple // inheritance patterns, but we only do this in the context of a constructor, and for the lowest level // of initializers, because in other contexts the contract may have been reentered. if (_initializing) { require( version == 1 && !AddressUpgradeable.isContract(address(this)), "Initializable: contract is already initialized" ); return false; } else { require(_initialized < version, "Initializable: contract is already initialized"); _initialized = version; return true; } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165Upgradeable { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// contracts/royalty/IERC2981.sol // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @dev Interface for the NFT Royalty Standard interface IERC2981 { /// ERC165 bytes to add to interface array - set in parent contract /// implementing this standard /// /// bytes4(keccak256("royaltyInfo(uint256,uint256)")) == 0x2a55205a /// bytes4 private constant _INTERFACE_ID_ERC2981 = 0x2a55205a; /// _registerInterface(_INTERFACE_ID_ERC2981); /// @notice Called with the sale price to determine how much royalty // is owed and to whom. /// @param _tokenId - the NFT asset queried for royalty information /// @param _salePrice - the sale price of the NFT asset specified by _tokenId /// @return receiver - address of who should be sent the royalty payment /// @return royaltyAmount - the royalty payment amount for _salePrice function royaltyInfo(uint256 _tokenId, uint256 _salePrice) external view returns (address receiver, uint256 royaltyAmount); }
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Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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Contract Creation Code
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Multichain Portfolio | 26 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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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.