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Overview
TokenID
315
Total Transfers
-
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract
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Minimal Proxy Contract for 0xc20138a9f737bdd1e0db8edb926bede7fbd5cd94
Contract Name:
ERC721SequentialId
Compiler Version
v0.8.23+commit.f704f362
Optimization Enabled:
Yes with 200 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.23; import {ERC721Base} from "./ERC721Base.sol"; import {INOStorage} from "../INOStorage.sol"; contract ERC721SequentialId is ERC721Base // 12 inherited components { function initialize( INOStorage.NFTCollectionData calldata data, address initialOwner, address ino_ ) public override { super.initialize(data, initialOwner, ino_); emit NFTDeployed( Type.Sequential, initialOwner, data.name, data.symbol ); } }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.23; import {ERC2981Upgradeable} from "openzeppelin-contracts-upgradeable/token/common/ERC2981Upgradeable.sol"; import {ReentrancyGuardUpgradeable} from "openzeppelin-contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol"; import {INFT} from "./interfaces/INFT.sol"; import {INFTInternal} from "./interfaces/INFTInternal.sol"; import {ISaleReadable} from "../../common/readable/ISaleReadable.sol"; /// @custom:audit OpenSea base contract (imported in `seadrop` library) - very few changes import {ERC721ContractMetadataCloneable} from "./imported/ERC721ContractMetadataCloneable.sol"; import {INOStorage} from "../INOStorage.sol"; // import struct import {Status} from "../../common/SaleStruct.sol"; abstract contract ERC721Base is INFT, // 1 inherited component INFTInternal, // 1 inherited component ERC2981Upgradeable, // 4 inherited components ERC721ContractMetadataCloneable, // 7 inherited components ReentrancyGuardUpgradeable // 2 inherited components { uint256 public startTokenId; address public ino; function deleteDefaultRoyalty() external override { _onlyOwnerOrSelf(); _deleteDefaultRoyalty(); } /// @inheritdoc INFT function mint( address minter, uint256 quantity ) external virtual override nonReentrant { _onlyIno(msg.sender); // Extra safety check to ensure the max supply is not exceeded. if (_totalMinted() + quantity > maxSupply()) { revert ERC721Base_MintQuantityExceedsMaxSupply( _totalMinted() + quantity, maxSupply() ); } // Mint the quantity of tokens to the minter. _safeMint(minter, quantity); } /// @inheritdoc INFT function postmintAllUnsold(address receiver) external override onlyOwner { _onlyIfInoCompleted(); uint256 quantity = maxSupply() - _totalMinted(); _safeMint(receiver, quantity); emit MintedAllUnsold(quantity); } /// @inheritdoc INFT function postmintAndReduceSupply( address receiver, uint256 quantity ) external override onlyOwner returns (uint256 reducedBy) { _onlyIfInoCompleted(); uint256 newTotal = _totalMinted() + quantity; uint256 oldMaxSupply = _maxSupply; if (newTotal > oldMaxSupply) { revert ERC721Base_PostmintAndReduceSupply_QuantityExceedsMaxSupply( oldMaxSupply, newTotal - oldMaxSupply ); } reducedBy = oldMaxSupply - newTotal; _safeMint(receiver, quantity); _setMaxSupply(_totalMinted()); emit MintedSomeUnsoldAndReducedSupply(quantity, reducedBy, _maxSupply); } /// @inheritdoc INFT function premint( address receiver, uint256 quantity ) external override onlyOwner { Status status = ISaleReadable(ino).saleStatus(); if (status != Status.NOT_STARTED) { revert ERC721Base_Premint_INOStarted(status); } _safeMint(receiver, quantity); emit Preminted(receiver, quantity, _startTokenId()); } function resetTokenRoyalty(uint256 tokenId) external override { _onlyOwnerOrSelf(); _resetTokenRoyalty(tokenId); } function setDefaultRoyalty( address receiver, uint96 feeNumerator ) external override { _onlyOwnerOrSelf(); _setDefaultRoyalty(receiver, feeNumerator); emit RoyaltyInfoUpdated(receiver, feeNumerator); } function setTokenRoyalty( uint256 tokenId, address receiver, uint96 feeNumerator ) external override { _onlyOwnerOrSelf(); _setTokenRoyalty(tokenId, receiver, feeNumerator); emit TokenRoyaltyInfoUpdated(tokenId, receiver, feeNumerator); } /// @inheritdoc INFT /// @dev Child contract MUST override it to emit an event. function initialize( INOStorage.NFTCollectionData calldata data, address initialOwner, address ino_ ) public virtual override initializer { if (data.maxCap > 2 ** 64 - 1) { revert CannotExceedMaxSupplyOfUint64(data.maxCap); } _maxSupply = data.maxCap; _tokenBaseURI = data.uri; startTokenId = data.startTokenId; // init after {startTokenId} is set __ERC721ACloneable__init(data.name, data.symbol); __ReentrancyGuard_init(); _transferOwnership(initialOwner); ino = ino_; } /// @inheritdoc INFT function reduceSupplyTo(uint256 newMaxSupply) public override { _onlyIfInoCompleted(); if (newMaxSupply >= _maxSupply) { revert ERC721Base_ReduceSupplyTo_NotGreaterEqThan(_maxSupply); } if (newMaxSupply <= _totalMinted()) { revert ERC721Base_ReduceSupplyTo_NotLowerEqThan(_totalMinted()); } emit SupplyReduced(_maxSupply, newMaxSupply); _setMaxSupply(newMaxSupply); /// @custom:audit cotains {_onlyOwnerOrSelf()} } function supportsInterface( bytes4 interfaceId ) public view virtual override(ERC721ContractMetadataCloneable, ERC2981Upgradeable) returns (bool) { return ERC2981Upgradeable.supportsInterface(interfaceId) || ERC721ContractMetadataCloneable.supportsInterface(interfaceId); } /// @inheritdoc INFT function getMintStats( address minter ) external view override returns ( uint256 minterNumMinted, uint256 currentTotalSupply, uint256 maxSupply_ ) { minterNumMinted = _numberMinted(minter); currentTotalSupply = _totalMinted(); maxSupply_ = _maxSupply; } function _onlyIno(address minter) internal view { if (minter != ino) { revert ERC721Base_InoOnlyApprovedMinter(); } } function _onlyIfInoCompleted() internal view { Status status = ISaleReadable(ino).saleStatus(); if (status != Status.COMPLETED) { revert ERC721Base_OnlyIfInoCompleted(status); } } function _startTokenId() internal view override returns (uint256) { return startTokenId; } }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.23; /** * @title INOStorage * @notice Mapps the storage layout of the {INO} contract. * @dev Diamond proxy (ERC-2535) storage style. */ library INOStorage { /** * @notice Struct reprensenting the main setup of the INO. * * @param paymentReceiver The address which will receive the funds from the INO. * @param projectWallet The address of the project issuing NFTs - transfer ownership once sale closed. */ struct SetUp { address paymentReceiver; address projectWallet; } /** * @notice Struct reprensenting the data of the NFT collection to be deployed through INO. * * @param name The name of the NFTs to be minted during the INO. * @param symbol The symbol of the NFTs to be minted during the INO. * @param uri The base URI of the NFTs to be minted during the INO - only used for reveal on minint, * otherwise the uri will be an empty string (blackbox and reveal date cases). * @param maxCap The maximum number of NFTs to be minted during and after (if not sold out) the INO. * @param startTokenId The first token id to be minted during the INO. */ struct NFTCollectionData { string name; string symbol; string uri; uint256 maxCap; uint256 startTokenId; } /** * @notice Struct reprensenting the whole storage layout of the INO contract. * * @param setUp Struct reprensenting the main setup of the INO - modified by owner interactions only. * @param nftData Struct reprensenting the data of the NFT collection to be deployed through INO * - modified by owner interactions only. * @param collection The address of the NFT collection to be deployed and minted through INO - modified * by owner interactions only. * @param phaseMaxMint Maximum number of NFTs to be minted in a specific phase - modified by owner * interactions only. * @param mintedInPhase Number of NFTs minted in a specific phase - modified by INO contract * interaction. * @param totalMinted Total number of NFTs minted in the whole INO - modified by INO contract * interaction. */ struct INOStruct { // modified by owner interactions only SetUp setUp; NFTCollectionData nftData; address collection; mapping(string => uint256) phaseMaxMint; // modified by INO contract interaction mapping(string => uint256) mintedInPhase; uint256 totalMinted; } /// @notice Storage position of {INOStruct} in {INO} contract. bytes32 public constant INO_STORAGE = keccak256("ino.storage"); /** * @return inoStruct Whole storage of {INO} contract. */ function layout() internal pure returns (INOStruct storage inoStruct) { bytes32 position = INO_STORAGE; assembly { inoStruct.slot := position } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/common/ERC2981.sol) pragma solidity ^0.8.0; import "../../interfaces/IERC2981Upgradeable.sol"; import "../../utils/introspection/ERC165Upgradeable.sol"; import "../../proxy/utils/Initializable.sol"; /** * @dev Implementation of the NFT Royalty Standard, a standardized way to retrieve royalty payment information. * * Royalty information can be specified globally for all token ids via {_setDefaultRoyalty}, and/or individually for * specific token ids via {_setTokenRoyalty}. The latter takes precedence over the first. * * Royalty is specified as a fraction of sale price. {_feeDenominator} is overridable but defaults to 10000, meaning the * fee is specified in basis points by default. * * IMPORTANT: ERC-2981 only specifies a way to signal royalty information and does not enforce its payment. See * https://eips.ethereum.org/EIPS/eip-2981#optional-royalty-payments[Rationale] in the EIP. Marketplaces are expected to * voluntarily pay royalties together with sales, but note that this standard is not yet widely supported. * * _Available since v4.5._ */ abstract contract ERC2981Upgradeable is Initializable, IERC2981Upgradeable, ERC165Upgradeable { function __ERC2981_init() internal onlyInitializing { } function __ERC2981_init_unchained() internal onlyInitializing { } struct RoyaltyInfo { address receiver; uint96 royaltyFraction; } RoyaltyInfo private _defaultRoyaltyInfo; mapping(uint256 => RoyaltyInfo) private _tokenRoyaltyInfo; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165Upgradeable, ERC165Upgradeable) returns (bool) { return interfaceId == type(IERC2981Upgradeable).interfaceId || super.supportsInterface(interfaceId); } /** * @inheritdoc IERC2981Upgradeable */ function royaltyInfo(uint256 tokenId, uint256 salePrice) public view virtual override returns (address, uint256) { RoyaltyInfo memory royalty = _tokenRoyaltyInfo[tokenId]; if (royalty.receiver == address(0)) { royalty = _defaultRoyaltyInfo; } uint256 royaltyAmount = (salePrice * royalty.royaltyFraction) / _feeDenominator(); return (royalty.receiver, royaltyAmount); } /** * @dev The denominator with which to interpret the fee set in {_setTokenRoyalty} and {_setDefaultRoyalty} as a * fraction of the sale price. Defaults to 10000 so fees are expressed in basis points, but may be customized by an * override. */ function _feeDenominator() internal pure virtual returns (uint96) { return 10000; } /** * @dev Sets the royalty information that all ids in this contract will default to. * * Requirements: * * - `receiver` cannot be the zero address. * - `feeNumerator` cannot be greater than the fee denominator. */ function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual { require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice"); require(receiver != address(0), "ERC2981: invalid receiver"); _defaultRoyaltyInfo = RoyaltyInfo(receiver, feeNumerator); } /** * @dev Removes default royalty information. */ function _deleteDefaultRoyalty() internal virtual { delete _defaultRoyaltyInfo; } /** * @dev Sets the royalty information for a specific token id, overriding the global default. * * Requirements: * * - `receiver` cannot be the zero address. * - `feeNumerator` cannot be greater than the fee denominator. */ function _setTokenRoyalty(uint256 tokenId, address receiver, uint96 feeNumerator) internal virtual { require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice"); require(receiver != address(0), "ERC2981: Invalid parameters"); _tokenRoyaltyInfo[tokenId] = RoyaltyInfo(receiver, feeNumerator); } /** * @dev Resets royalty information for the token id back to the global default. */ function _resetTokenRoyalty(uint256 tokenId) internal virtual { delete _tokenRoyaltyInfo[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[48] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuardUpgradeable is Initializable { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; function __ReentrancyGuard_init() internal onlyInitializing { __ReentrancyGuard_init_unchained(); } function __ReentrancyGuard_init_unchained() internal onlyInitializing { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be _NOT_ENTERED require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == _ENTERED; } /** * @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: UNLICENSED pragma solidity 0.8.23; import {INOStorage} from "../../INOStorage.sol"; /** * @title INFT * @notice Define external and public functions used by NFTs listed in INOs. */ interface INFT { /// @dev Removes default royalty information. function deleteDefaultRoyalty() external; /** * @notice Initialize a clones NFT to sell & mint for an INO. * @dev Need to be public as childs override it while calling {super.initialize()}. * * @param data The NFT collection data. * @param initialOwner The initial owner of the NFT collection. * @param ino_ The linked INO contract address. */ function initialize( INOStorage.NFTCollectionData calldata data, address initialOwner, address ino_ ) external; /** * @notice Mint tokens, restricted to the INO contract. * * @dev If the implementing token uses _safeMint(), or a feeRecipient with a malicious receive() * hook is specified, the token or fee recipients may be able to execute another mint in the * same transaction via a separate INO contract. * This is dangerous if an implementing token does not correctly update the minterNumMinted * and currentTotalSupply values before transferring minted tokens, as INO references these * values to enforce token limits on a per-wallet and per-stage basis. * * ERC721A tracks these values automatically, but this note and nonReentrant modifier are left * here to encourage best-practices when referencing this contract. * * @param minter The address to mint to. * @param quantity The number of tokens to mint. */ function mint(address minter, uint256 quantity) external; /** * @notice Mint all unsold NFTs to `receiver`. */ function postmintAllUnsold(address receiver) external; /// @notice Mints `toMint` to `receiver` and reduces the max supply if does not mint all left. function postmintAndReduceSupply( address receiver, uint256 toMint ) external returns (uint256 reducedBy); /** * @notice Allow NFT collection owner to mint NFTs to his wallet BEFORE the INO starts. Mostly used to * reward the team behind the project. Can also be used if airdrops/giveaway are introduced * after the INO contract has been deployed. * @dev Can not be called even if INO is paused. */ function premint(address receiver, uint256 amount) external; /** * @notice BE CAREFUL: once max supply is reduced it can never be increased again. * @dev Can only reduce the max supply between `totalSupply()` and `maxSupply()`. */ function reduceSupplyTo(uint256 newMaxSupply) external; /// @dev Resets royalty information for the token id back to the global default. function resetTokenRoyalty(uint256 tokenId) external; /** * @dev Sets the royalty information that all ids in this contract will default to. * * @param receiver Address receiving royalties. * @param feeNumerator Royalties in basis points. */ function setDefaultRoyalty(address receiver, uint96 feeNumerator) external; function setTokenRoyalty( uint256 tokenId, address receiver, uint96 feeNumerator ) external; /** * @notice Returns a set of mint stats for the address. * * @dev NOTE: Implementing contracts should always update these numbers before transferring any tokens * with _safeMint() to mitigate consequences of malicious onERC721Received() hooks. * * @param minter The minter address. * * @return minterNumMinted The number of tokens minted by `minter`. * @return currentTotalSupply The current total supply of NFT. * @return maxSupply The maximum supply of NFT. */ function getMintStats( address minter ) external view returns ( uint256 minterNumMinted, uint256 currentTotalSupply, uint256 maxSupply ); }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.23; import {Status} from "../../../common/SaleStruct.sol"; /** * @title INFTInternal * @notice Define enum, struct, event and errors used by NFTs listed in INOs. */ interface INFTInternal { /// @ notice Define the type of NFT according to INO needs. enum Type { Sequential, RandomisedUri, ConfigRoyalty } /// @notice Thrown when someone other than the INO tries to mint. error ERC721Base_InoOnlyApprovedMinter(); /// @notice Thrown when trying to mint more than maximum supply. error ERC721Base_MintQuantityExceedsMaxSupply( uint256 total, uint256 maxSupply ); /// @notice Thrown when trying to make an action BUT INO is not completed. error ERC721Base_OnlyIfInoCompleted(Status current); error ERC721Base_PostmintAndReduceSupply_QuantityExceedsMaxSupply( uint256 maxSupply, uint256 exceededBy ); /// @notice Thrown when trying to premint wheras INO already started, even if paused. error ERC721Base_Premint_INOStarted(Status current); /// @notice Thrown when updating provenance hash once INO is opened, paused or closed. error ERC721Base_SetProvenanceHash(Status current); /** * @notice Thrown when updating base URI once INO is opened, paused or closed, except if reveal date * and new uri equls provenan hash. */ error ERC721Base_SetBaseURI(Status current); /// @notice Thrown when trying to increase maximum supply. error ERC721Base_ReduceSupplyTo_NotGreaterEqThan(uint256 maxSupply); /// @notice Thrown when trying to decrease maximum supply below total quantity supply. error ERC721Base_ReduceSupplyTo_NotLowerEqThan(uint256 totalSupply); event MintedAllUnsold(uint256 indexed quantity); event MintedSomeUnsoldAndReducedSupply( uint256 indexed quantity, uint256 indexed reducedBy, uint256 indexed newSupply ); event NFTDeployed( Type indexed nftType, address indexed initialOwner, string indexed name, string symbol ); event Preminted( address indexed receiver, uint256 indexed quantity, uint256 indexed startTokenId ); /// @dev Emit an event when the royalties info is updated. event RoyaltyInfoUpdated(address receiver, uint256 bps); /// @dev Emit an event when the royalties info for a token is updated. event TokenRoyaltyInfoUpdated( uint256 tokenId, address receiver, uint256 bps ); event SupplyReduced(uint256 indexed oldSupply, uint256 indexed newSupply); }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.23; // import struct import {Status, Phase} from "../SaleStruct.sol"; /** * @title ISaleReadable * @notice Interface made for read-only data from {Sale}. */ interface ISaleReadable { /** * @param account Address of the user. * @param phaseId Identifier of the phase. * * @return amount Amount of paymentToken paid by phase by each user, * expressed in {SetUp.paymentToken}. */ function freeAllocationMintedBy( address account, string calldata phaseId ) external view returns (uint256); /** * @return Total Sum of maximum cap of each phase, expressed in {SetUp.paymentToken}. */ function summedMaxPhaseCap() external view returns (uint256); /** * @param account Address of the user. * @param phaseId Identifier of the phase. * * @return Amount of {SaleStorage.SetUp.paymentToken} paid by `account` for the phase `phaseId`. * If `address(0)` is returned, it means native (ETH, BNB, MATCI, etc...). */ function allocationReservedByIn( address account, string calldata phaseId ) external view returns (uint256); /** * @param phaseId Identifier of the phase. * @return phase_ Phase struct representing the data of the phase `phaseId`. */ function phase( string memory phaseId ) external view returns (Phase memory phase_); /// @return phaseIds_ List of all phases identifiers. function phaseIds() external view returns (string[] memory phaseIds_); /** * @param phaseId Identifier of the phase. * * @return Amount of {SaleStorage.SetUp.paymentToken} raised for the phase `phaseId`. * If `address(0)` is returned, it means native (ETH, BNB, MATCI, etc...). */ function raisedInPhase( string memory phaseId ) external view returns (uint256); /// @return Enum representing the current status of the Sale. function saleStatus() external view returns (Status); /** * @return paymentToken Address of the default token used to reserve allocation through the Sale. * If `address(0)` is returned, it means native (ETH, BNB, MATCI, etc...). * @return permit2 Address of Permit2 contract. */ function setUp() external view returns (address paymentToken, address permit2); /// @return Total amount of {SaleStorage.SetUp.paymentToken} raised for this Sale. function totalRaised() external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.23; import {IERC165} from "openzeppelin-contracts/utils/introspection/IERC165.sol"; import {INFTContractMetadata} from "./INFTContractMetadata.sol"; import {ERC721ACloneable} from "./ERC721ACloneable.sol"; import {Ownable2StepUpgradeable} from "openzeppelin-contracts-upgradeable/access/Ownable2StepUpgradeable.sol"; /** * @title ERC721ContractMetadataCloneable * @author James Wenzel (emo.eth) * @author Ryan Ghods (ralxz.eth) * @author Stephan Min (stephanm.eth) * @notice ERC721ContractMetadata is a token contract that extends ERC721A * with additional metadata and ownership capabilities. * * @custom:audit Only changes from base contract in `seadrop` library are located in {setBaseURI} and * {_setMaxSupply}. */ abstract contract ERC721ContractMetadataCloneable is ERC721ACloneable, // 3 inherited components Ownable2StepUpgradeable, // 2 inherited components INFTContractMetadata // 1 inherited component { /// @notice Track the max supply. uint256 _maxSupply; /// @notice Track the base URI for token metadata. string _tokenBaseURI; /// @notice Track the contract URI for contract metadata. string _contractURI; /// @notice Track the provenance hash for guaranteeing metadata order /// for random reveals. /// @custom:audit Made `internal` compared to `seadrop` library. bytes32 internal _provenanceHash; error OnlyOwner(); /** * @dev Reverts if the sender is not the owner or the contract itself. * This function is inlined instead of being a modifier * to save contract space from being inlined N times. */ function _onlyOwnerOrSelf() internal view { if ( _cast(msg.sender == owner()) | _cast(msg.sender == address(this)) == 0 ) { revert OnlyOwner(); } } /** * @notice Sets the base URI for the token metadata and emits an event. * * @param newBaseURI The new base URI to set. * * @custom:audit Only changed visibility function (external to public) + `virtual` keyword compared * to `seadrop` library. * Made public to call through {super.setBaseURI} */ function setBaseURI(string calldata newBaseURI) public virtual override { // Ensure the sender is only the owner or contract itself. _onlyOwnerOrSelf(); // Set the new base URI. _tokenBaseURI = newBaseURI; // Emit an event with the update. if (totalSupply() != 0) { emit BatchMetadataUpdate(_startTokenId(), _nextTokenId() - 1); } } /** * @notice Sets the contract URI for contract metadata. * * @param newContractURI The new contract URI. */ function setContractURI(string calldata newContractURI) external override { // Ensure the sender is only the owner or contract itself. _onlyOwnerOrSelf(); // Set the new contract URI. _contractURI = newContractURI; // Emit an event with the update. emit ContractURIUpdated(newContractURI); } /** * @notice Emit an event notifying metadata updates for * a range of token ids, according to EIP-4906. * * @param fromTokenId The start token id. * @param toTokenId The end token id. */ function emitBatchMetadataUpdate( uint256 fromTokenId, uint256 toTokenId ) external { // Ensure the sender is only the owner or contract itself. _onlyOwnerOrSelf(); // Emit an event with the update. emit BatchMetadataUpdate(fromTokenId, toTokenId); } /** * @notice Sets the max token supply and emits an event. * * @param newMaxSupply The new max supply to set. * * * @custom:audit Only changed visibility function (external to internal) compared * to `seadrop` library. */ function _setMaxSupply(uint256 newMaxSupply) internal { // Ensure the sender is only the owner or contract itself. _onlyOwnerOrSelf(); // Ensure the max supply does not exceed the maximum value of uint64. if (newMaxSupply > 2 ** 64 - 1) { revert CannotExceedMaxSupplyOfUint64(newMaxSupply); } // Set the new max supply. _maxSupply = newMaxSupply; // Emit an event with the update. emit MaxSupplyUpdated(newMaxSupply); } /** * @notice Sets the provenance hash and emits an event. * * The provenance hash is used for random reveals, which * is a hash of the ordered metadata to show it has not been * modified after mint started. * * In INO case, only useful for mint strategies with reveal date. Blackbox and reveal on mint * will not use this. * * This function will revert after the first item has been minted. * * @param newProvenanceHash The new provenance hash to set. * * * @custom:audit Only added `virtual` and changed from `external` to `public` compared to `seadrop` * library. */ function setProvenanceHash(bytes32 newProvenanceHash) public virtual { // Ensure the sender is only the owner or contract itself. _onlyOwnerOrSelf(); // Revert if any items have been minted. if (_totalMinted() > 0) { revert ProvenanceHashCannotBeSetAfterMintStarted(); } // Keep track of the old provenance hash for emitting with the event. bytes32 oldProvenanceHash = _provenanceHash; // Set the new provenance hash. _provenanceHash = newProvenanceHash; // Emit an event with the update. emit ProvenanceHashUpdated(oldProvenanceHash, newProvenanceHash); } /** * @notice Returns the base URI for token metadata. */ function baseURI() external view override returns (string memory) { return _baseURI(); } /** * @notice Returns the base URI for the contract, which ERC721A uses * to return tokenURI. */ function _baseURI() internal view virtual override returns (string memory) { return _tokenBaseURI; } /** * @notice Returns the contract URI for contract metadata. */ function contractURI() external view override returns (string memory) { return _contractURI; } /** * @notice Returns the max token supply. */ function maxSupply() public view returns (uint256) { return _maxSupply; } /** * @notice Returns the provenance hash. * The provenance hash is used for random reveals, which * is a hash of the ordered metadata to show it is unmodified * after mint has started. */ function provenanceHash() external view override returns (bytes32) { return _provenanceHash; } /** * @notice Returns whether the interface is supported. * * @param interfaceId The interface id to check against. */ function supportsInterface( bytes4 interfaceId ) public view virtual override(ERC721ACloneable) returns (bool) { return interfaceId == 0x49064906 || // ERC-4906 super.supportsInterface(interfaceId); } /** * @dev Internal pure function to cast a `bool` value to a `uint256` value. * * @param b The `bool` value to cast. * * @return u The `uint256` value. */ function _cast(bool b) internal pure returns (uint256 u) { assembly { u := b } } }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.23; /** * @notice Shared enum representing the different status of a phase or the whole IGO. * * @custom:value NOT_STARTED IGO/Phase created but not started; allocations/buyAndMint are allowed. * @custom:value OPENED IGO/Phase started according to start date; allocations/buyAndMint are allowed. * @custom:value COMPLETED IGO/Phase everything has been sold or time has been elapsed; * allocations/buyAndMint can't be reserved anymore. * @custom:value PAUSED IGO/Phase has been paused by the owner; allocations/buyAndMint can't be * reserved until further notice. */ enum Status { NOT_STARTED, OPENED, COMPLETED, PAUSED } /** * @notice Struct representing an allocation of a wallet for a specific phase of a sale. * * @param phaseId Phase identifier of the in the current sale, e.g. "vpr-social-task", * "sale-public-phase-1", "ino-public" etc... * @param maxAllocation Maximum amount to spend in {SaleStorage.SetUp.paymentToken}. * @param saleTokenPerPaymentToken Price per token/nft of the project behind the Sale, expressed in * {SaleStorage.SetUp.paymentToken}. */ struct Allocation { string phaseId; uint256 maxAllocation; uint256 saleTokenPerPaymentToken; } /** * @notice Struct representing a buy permission signed by `msg.sender` for * {SaleWritable.reserveAllocation} function to use with {Permit2} library. * * @dev Compulsory to interact with {Permit2.permitTransferFrom} in * {SaleWritableInternal._reserveAllocation}. * * @param signature {Permit2} signature to transfer tokens from the buyer to {SaleVesting}. * @param deadline Seadline on the permit signature. * @param nonce Unique value for every token owner's signature to prevent signature replays. */ struct BuyPermission { bytes signature; uint256 deadline; uint256 nonce; } /** * @notice Shared struct representing the data of a phase. * * @param status Enum representing the current status of the phase. * @param merkleRoot Merkle root of the merkle tree containing whitelisted data. * @param startAt Timestamp at which the phase will be opened to reserve allocation. * @param endAt Timestamp at which the phase will not accept allocation reservation anymore. * @param maxPhaseCap Maximum amount of {SaleStorage.SetUp.paymentToken} for this phase. */ struct Phase { Status status; // contains wallet and allocation per wallet bytes32 merkleRoot; uint128 startAt; uint128 endAt; uint256 maxPhaseCap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC2981.sol) pragma solidity ^0.8.0; import "../utils/introspection/IERC165Upgradeable.sol"; /** * @dev Interface for the NFT Royalty Standard. * * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal * support for royalty payments across all NFT marketplaces and ecosystem participants. * * _Available since v4.5._ */ interface IERC2981Upgradeable is IERC165Upgradeable { /** * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of * exchange. The royalty amount is denominated and should be paid in that same unit of exchange. */ function royaltyInfo( uint256 tokenId, uint256 salePrice ) external view returns (address receiver, uint256 royaltyAmount); }
// 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 (last updated v4.9.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; 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] * ```solidity * 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. * * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a * constructor. * * Emits an {Initialized} event. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1), "Initializable: contract is already initialized" ); _initialized = 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. * * 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. * * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer` * cannot be nested. If one is invoked in the context of another, execution will revert. * * 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. * * WARNING: setting the version to 255 will prevent any future reinitialization. * * Emits an {Initialized} event. */ modifier reinitializer(uint8 version) { require(!_initializing && _initialized < version, "Initializable: contract is already initialized"); _initialized = version; _initializing = true; _; _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. * * Emits an {Initialized} event the first time it is successfully executed. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized != type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } /** * @dev Returns the highest version that has been initialized. See {reinitializer}. */ function _getInitializedVersion() internal view returns (uint8) { return _initialized; } /** * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}. */ function _isInitializing() internal view returns (bool) { return _initializing; } }
// 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 pragma solidity 0.8.23; /** * @custom:audit Changes from base contract `seadrop/src/interfaces/ISeaDropTokenContractMetadata.sol`: * - deleted {setMaxSupply}, * - deleted everything related to royalties. */ interface INFTContractMetadata { /** * @notice Throw if the max supply exceeds uint64, a limit * due to the storage of bit-packed variables in ERC721A. */ error CannotExceedMaxSupplyOfUint64(uint256 newMaxSupply); /** * @dev Revert with an error when attempting to set the provenance * hash after the mint has started. */ error ProvenanceHashCannotBeSetAfterMintStarted(); /** * @dev Emit an event for token metadata reveals/updates, * according to EIP-4906. * * @param _fromTokenId The start token id. * @param _toTokenId The end token id. */ event BatchMetadataUpdate(uint256 _fromTokenId, uint256 _toTokenId); /** * @dev Emit an event when the URI for the collection-level metadata * is updated. */ event ContractURIUpdated(string newContractURI); /** * @dev Emit an event when the max token supply is updated. */ event MaxSupplyUpdated(uint256 newMaxSupply); /** * @dev Emit an event with the previous and new provenance hash after * being updated. */ event ProvenanceHashUpdated(bytes32 previousHash, bytes32 newHash); /** * @notice Sets the base URI for the token metadata and emits an event. * * @param tokenURI The new base URI to set. */ function setBaseURI(string calldata tokenURI) external; /** * @notice Sets the contract URI for contract metadata. * * @param newContractURI The new contract URI. */ function setContractURI(string calldata newContractURI) external; /** * @notice Sets the provenance hash and emits an event. * * The provenance hash is used for random reveals, which * is a hash of the ordered metadata to show it has not been * modified after mint started. * * This function will revert after the first item has been minted. * * @param newProvenanceHash The new provenance hash to set. */ function setProvenanceHash(bytes32 newProvenanceHash) external; /** * @notice Returns the base URI for token metadata. */ function baseURI() external view returns (string memory); /** * @notice Returns the contract URI. */ function contractURI() external view returns (string memory); /** * @notice Returns the max token supply. */ function maxSupply() external view returns (uint256); /** * @notice Returns the provenance hash. * The provenance hash is used for random reveals, which * is a hash of the ordered metadata to show it is unmodified * after mint has started. */ function provenanceHash() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // ERC721A Contracts v4.2.2 // Creator: Chiru Labs pragma solidity ^0.8.23; import {IERC721A} from "ERC721A/IERC721A.sol"; import {Initializable} from "openzeppelin-contracts-upgradeable/proxy/utils/Initializable.sol"; /** * @dev Interface of ERC721 token receiver. */ interface ERC721A__IERC721Receiver { function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } /** * @custom:audit Added `minterOf` support in `_mint`, compared to OpenSea base contract. * * @title ERC721A * * @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721) * Non-Fungible Token Standard, including the Metadata extension. * Optimized for lower gas during batch mints. * * Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...) * starting from `_startTokenId()`. * * Assumptions: * * - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply. * - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256). * */ contract ERC721ACloneable is IERC721A, Initializable { // Bypass for a `--via-ir` bug (https://github.com/chiru-labs/ERC721A/pull/364). struct TokenApprovalRef { address value; } // ============================================================= // CONSTANTS // ============================================================= // Mask of an entry in packed address data. uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1; // The bit position of `numberMinted` in packed address data. uint256 private constant _BITPOS_NUMBER_MINTED = 64; // The bit position of `numberBurned` in packed address data. uint256 private constant _BITPOS_NUMBER_BURNED = 128; // The bit position of `aux` in packed address data. uint256 private constant _BITPOS_AUX = 192; // Mask of all 256 bits in packed address data except the 64 bits for `aux`. uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1; // The bit position of `startTimestamp` in packed ownership. uint256 private constant _BITPOS_START_TIMESTAMP = 160; // The bit mask of the `burned` bit in packed ownership. uint256 private constant _BITMASK_BURNED = 1 << 224; // The bit position of the `nextInitialized` bit in packed ownership. uint256 private constant _BITPOS_NEXT_INITIALIZED = 225; // The bit mask of the `nextInitialized` bit in packed ownership. uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225; // The bit position of `extraData` in packed ownership. uint256 private constant _BITPOS_EXTRA_DATA = 232; // Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`. uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1; // The mask of the lower 160 bits for addresses. uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1; // The maximum `quantity` that can be minted with {_mintERC2309}. // This limit is to prevent overflows on the address data entries. // For a limit of 5000, a total of 3.689e15 calls to {_mintERC2309} // is required to cause an overflow, which is unrealistic. uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000; // The `Transfer` event signature is given by: // `keccak256(bytes("Transfer(address,address,uint256)"))`. bytes32 private constant _TRANSFER_EVENT_SIGNATURE = 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef; // ============================================================= // STORAGE // ============================================================= // The next token ID to be minted. uint256 private _currentIndex; // The number of tokens burned. uint256 private _burnCounter; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to ownership details // An empty struct value does not necessarily mean the token is unowned. // See {_packedOwnershipOf} implementation for details. // // Bits Layout: // - [0..159] `addr` // - [160..223] `startTimestamp` // - [224] `burned` // - [225] `nextInitialized` // - [232..255] `extraData` mapping(uint256 => uint256) private _packedOwnerships; // Mapping owner address to address data. // // Bits Layout: // - [0..63] `balance` // - [64..127] `numberMinted` // - [128..191] `numberBurned` // - [192..255] `aux` mapping(address => uint256) private _packedAddressData; // Mapping from token ID to approved address. mapping(uint256 => TokenApprovalRef) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; mapping(uint256 => address) public minterOf; // ============================================================= // CONSTRUCTOR // ============================================================= function __ERC721ACloneable__init( string memory name_, string memory symbol_ ) internal onlyInitializing { _name = name_; _symbol = symbol_; _currentIndex = _startTokenId(); } // ============================================================= // TOKEN COUNTING OPERATIONS // ============================================================= /** * @dev Returns the starting token ID. * To change the starting token ID, please override this function. */ function _startTokenId() internal view virtual returns (uint256) { return 0; } /** * @dev Returns the next token ID to be minted. */ function _nextTokenId() internal view virtual returns (uint256) { return _currentIndex; } /** * @dev Returns the total number of tokens in existence. * Burned tokens will reduce the count. * To get the total number of tokens minted, please see {_totalMinted}. */ function totalSupply() public view virtual override returns (uint256) { // Counter underflow is impossible as _burnCounter cannot be incremented // more than `_currentIndex - _startTokenId()` times. unchecked { return _currentIndex - _burnCounter - _startTokenId(); } } /** * @dev Returns the total amount of tokens minted in the contract. */ function _totalMinted() internal view virtual returns (uint256) { // Counter underflow is impossible as `_currentIndex` does not decrement, // and it is initialized to `_startTokenId()`. unchecked { return _currentIndex - _startTokenId(); } } /** * @dev Returns the total number of tokens burned. */ function _totalBurned() internal view virtual returns (uint256) { return _burnCounter; } // ============================================================= // ADDRESS DATA OPERATIONS // ============================================================= /** * @dev Returns the number of tokens in `owner`'s account. */ function balanceOf( address owner ) public view virtual override returns (uint256) { if (owner == address(0)) revert BalanceQueryForZeroAddress(); return _packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the number of tokens minted by `owner`. */ function _numberMinted(address owner) internal view returns (uint256) { return (_packedAddressData[owner] >> _BITPOS_NUMBER_MINTED) & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the number of tokens burned by or on behalf of `owner`. */ function _numberBurned(address owner) internal view returns (uint256) { return (_packedAddressData[owner] >> _BITPOS_NUMBER_BURNED) & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used). */ function _getAux(address owner) internal view returns (uint64) { return uint64(_packedAddressData[owner] >> _BITPOS_AUX); } /** * Sets the auxiliary data for `owner`. (e.g. number of whitelist mint slots used). * If there are multiple variables, please pack them into a uint64. */ function _setAux(address owner, uint64 aux) internal virtual { uint256 packed = _packedAddressData[owner]; uint256 auxCasted; // Cast `aux` with assembly to avoid redundant masking. assembly { auxCasted := aux } packed = (packed & _BITMASK_AUX_COMPLEMENT) | (auxCasted << _BITPOS_AUX); _packedAddressData[owner] = packed; } // ============================================================= // IERC165 // ============================================================= /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified) * to learn more about how these ids are created. * * This function call must use less than 30000 gas. */ function supportsInterface( bytes4 interfaceId ) public view virtual override returns (bool) { // The interface IDs are constants representing the first 4 bytes // of the XOR of all function selectors in the interface. // See: [ERC165](https://eips.ethereum.org/EIPS/eip-165) // (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`) return interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165. interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721. interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata. } // ============================================================= // IERC721Metadata // ============================================================= /** * @dev Returns the token collection name. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the token collection symbol. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI( uint256 tokenId ) public view virtual override returns (string memory) { if (!_exists(tokenId)) revert URIQueryForNonexistentToken(); string memory baseURI = _baseURI(); return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, _toString(tokenId))) : ""; } /** * @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, it can be overridden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } // ============================================================= // OWNERSHIPS OPERATIONS // ============================================================= /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf( uint256 tokenId ) public view virtual override returns (address) { return address(uint160(_packedOwnershipOf(tokenId))); } /** * @dev Gas spent here starts off proportional to the maximum mint batch size. * It gradually moves to O(1) as tokens get transferred around over time. */ function _ownershipOf( uint256 tokenId ) internal view virtual returns (TokenOwnership memory) { return _unpackedOwnership(_packedOwnershipOf(tokenId)); } /** * @dev Returns the unpacked `TokenOwnership` struct at `index`. */ function _ownershipAt( uint256 index ) internal view virtual returns (TokenOwnership memory) { return _unpackedOwnership(_packedOwnerships[index]); } /** * @dev Initializes the ownership slot minted at `index` for efficiency purposes. */ function _initializeOwnershipAt(uint256 index) internal virtual { if (_packedOwnerships[index] == 0) { _packedOwnerships[index] = _packedOwnershipOf(index); } } /** * Returns the packed ownership data of `tokenId`. */ function _packedOwnershipOf( uint256 tokenId ) private view returns (uint256) { uint256 curr = tokenId; unchecked { if (_startTokenId() <= curr) { if (curr < _currentIndex) { uint256 packed = _packedOwnerships[curr]; // If not burned. if (packed & _BITMASK_BURNED == 0) { // Invariant: // There will always be an initialized ownership slot // (i.e. `ownership.addr != address(0) && ownership.burned == false`) // before an unintialized ownership slot // (i.e. `ownership.addr == address(0) && ownership.burned == false`) // Hence, `curr` will not underflow. // // We can directly compare the packed value. // If the address is zero, packed will be zero. while (packed == 0) { packed = _packedOwnerships[--curr]; } return packed; } } } } revert OwnerQueryForNonexistentToken(); } /** * @dev Returns the unpacked `TokenOwnership` struct from `packed`. */ function _unpackedOwnership( uint256 packed ) private pure returns (TokenOwnership memory ownership) { ownership.addr = address(uint160(packed)); ownership.startTimestamp = uint64(packed >> _BITPOS_START_TIMESTAMP); ownership.burned = packed & _BITMASK_BURNED != 0; ownership.extraData = uint24(packed >> _BITPOS_EXTRA_DATA); } /** * @dev Packs ownership data into a single uint256. */ function _packOwnershipData( address owner, uint256 flags ) private view returns (uint256 result) { assembly { // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean. owner := and(owner, _BITMASK_ADDRESS) // `owner | (block.timestamp << _BITPOS_START_TIMESTAMP) | flags`. result := or( owner, or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags) ) } } /** * @dev Returns the `nextInitialized` flag set if `quantity` equals 1. */ function _nextInitializedFlag( uint256 quantity ) private pure returns (uint256 result) { // For branchless setting of the `nextInitialized` flag. assembly { // `(quantity == 1) << _BITPOS_NEXT_INITIALIZED`. result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1)) } } // ============================================================= // APPROVAL OPERATIONS // ============================================================= /** * @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) public virtual override { address owner = ownerOf(tokenId); if (_msgSenderERC721A() != owner) { if (!isApprovedForAll(owner, _msgSenderERC721A())) { revert ApprovalCallerNotOwnerNorApproved(); } } _tokenApprovals[tokenId].value = to; emit Approval(owner, to, tokenId); } /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved( uint256 tokenId ) public view virtual override returns (address) { if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken(); return _tokenApprovals[tokenId].value; } /** * @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 ) public virtual override { _operatorApprovals[_msgSenderERC721A()][operator] = approved; emit ApprovalForAll(_msgSenderERC721A(), operator, approved); } /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll}. */ function isApprovedForAll( address owner, address operator ) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @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. See {_mint}. */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _startTokenId() <= tokenId && tokenId < _currentIndex && // If within bounds, _packedOwnerships[tokenId] & _BITMASK_BURNED == 0; // and not burned. } /** * @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`. */ function _isSenderApprovedOrOwner( address approvedAddress, address owner, address msgSender ) private pure returns (bool result) { assembly { // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean. owner := and(owner, _BITMASK_ADDRESS) // Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean. msgSender := and(msgSender, _BITMASK_ADDRESS) // `msgSender == owner || msgSender == approvedAddress`. result := or(eq(msgSender, owner), eq(msgSender, approvedAddress)) } } /** * @dev Returns the storage slot and value for the approved address of `tokenId`. */ function _getApprovedSlotAndAddress( uint256 tokenId ) private view returns (uint256 approvedAddressSlot, address approvedAddress) { TokenApprovalRef storage tokenApproval = _tokenApprovals[tokenId]; // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId].value`. assembly { approvedAddressSlot := tokenApproval.slot approvedAddress := sload(approvedAddressSlot) } } // ============================================================= // TRANSFER OPERATIONS // ============================================================= /** * @dev Transfers `tokenId` from `from` to `to`. * * 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 ) public virtual override { uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId); if (address(uint160(prevOwnershipPacked)) != from) revert TransferFromIncorrectOwner(); ( uint256 approvedAddressSlot, address approvedAddress ) = _getApprovedSlotAndAddress(tokenId); // The nested ifs save around 20+ gas over a compound boolean condition. if ( !_isSenderApprovedOrOwner( approvedAddress, from, _msgSenderERC721A() ) ) { if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved(); } if (to == address(0)) revert TransferToZeroAddress(); _beforeTokenTransfers(from, to, tokenId, 1); // Clear approvals from the previous owner. assembly { if approvedAddress { // This is equivalent to `delete _tokenApprovals[tokenId]`. sstore(approvedAddressSlot, 0) } } // Underflow of the sender's balance is impossible because we check for // ownership above and the recipient's balance can't realistically overflow. // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256. unchecked { // We can directly increment and decrement the balances. --_packedAddressData[from]; // Updates: `balance -= 1`. ++_packedAddressData[to]; // Updates: `balance += 1`. // Updates: // - `address` to the next owner. // - `startTimestamp` to the timestamp of transfering. // - `burned` to `false`. // - `nextInitialized` to `true`. _packedOwnerships[tokenId] = _packOwnershipData( to, _BITMASK_NEXT_INITIALIZED | _nextExtraData(from, to, prevOwnershipPacked) ); // If the next slot may not have been initialized (i.e. `nextInitialized == false`) . if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) { uint256 nextTokenId = tokenId + 1; // If the next slot's address is zero and not burned (i.e. packed value is zero). if (_packedOwnerships[nextTokenId] == 0) { // If the next slot is within bounds. if (nextTokenId != _currentIndex) { // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`. _packedOwnerships[nextTokenId] = prevOwnershipPacked; } } } } emit Transfer(from, to, tokenId); _afterTokenTransfers(from, to, tokenId, 1); } /** * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @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 memory _data ) public virtual override { transferFrom(from, to, tokenId); if (to.code.length != 0) { if (!_checkContractOnERC721Received(from, to, tokenId, _data)) { revert TransferToNonERC721ReceiverImplementer(); } } } /** * @dev Hook that is called before a set of serially-ordered token IDs * are about to be transferred. This includes minting. * And also called before burning one token. * * `startTokenId` - the first token ID to be transferred. * `quantity` - the amount to be transferred. * * 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, `tokenId` will be burned by `from`. * - `from` and `to` are never both zero. */ function _beforeTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual {} /** * @dev Hook that is called after a set of serially-ordered token IDs * have been transferred. This includes minting. * And also called after one token has been burned. * * `startTokenId` - the first token ID to be transferred. * `quantity` - the amount to be transferred. * * Calling conditions: * * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been * transferred to `to`. * - When `from` is zero, `tokenId` has been minted for `to`. * - When `to` is zero, `tokenId` has been burned by `from`. * - `from` and `to` are never both zero. */ function _afterTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual {} /** * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract. * * `from` - Previous owner of the given token ID. * `to` - Target address that will receive the token. * `tokenId` - Token ID to be transferred. * `_data` - Optional data to send along with the call. * * Returns whether the call correctly returned the expected magic value. */ function _checkContractOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { try ERC721A__IERC721Receiver(to).onERC721Received( _msgSenderERC721A(), from, tokenId, _data ) returns (bytes4 retval) { return retval == ERC721A__IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert TransferToNonERC721ReceiverImplementer(); } else { assembly { revert(add(32, reason), mload(reason)) } } } } // ============================================================= // MINT OPERATIONS // ============================================================= /** * @dev Mints `quantity` tokens and transfers them to `to`. * * Requirements: * * - `to` cannot be the zero address. * - `quantity` must be greater than 0. * * Emits a {Transfer} event for each mint. */ function _mint(address to, uint256 quantity) internal virtual { uint256 startTokenId = _currentIndex; if (quantity == 0) revert MintZeroQuantity(); _beforeTokenTransfers(address(0), to, startTokenId, quantity); // Overflows are incredibly unrealistic. // `balance` and `numberMinted` have a maximum limit of 2**64. // `tokenId` has a maximum limit of 2**256. unchecked { // Updates: // - `balance += quantity`. // - `numberMinted += quantity`. // // We can directly add to the `balance` and `numberMinted`. _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1); // Updates: // - `address` to the owner. // - `startTimestamp` to the timestamp of minting. // - `burned` to `false`. // - `nextInitialized` to `quantity == 1`. _packedOwnerships[startTokenId] = _packOwnershipData( to, _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0) ); uint256 toMasked; uint256 end = startTokenId + quantity; // Use assembly to loop and emit the `Transfer` event for gas savings. // The duplicated `log4` removes an extra check and reduces stack juggling. // The assembly, together with the surrounding Solidity code, have been // delicately arranged to nudge the compiler into producing optimized opcodes. assembly { // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean. toMasked := and(to, _BITMASK_ADDRESS) // Emit the `Transfer` event. log4( 0, // Start of data (0, since no data). 0, // End of data (0, since no data). _TRANSFER_EVENT_SIGNATURE, // Signature. 0, // `address(0)`. toMasked, // `to`. startTokenId // `tokenId`. ) /// @custom:audit adding compared to OpenSea original contract // minterOf[tokenId] = to sstore(hashLocation(startTokenId, minterOf.slot), to) /// @custom:audit adding compared to OpenSea original contract function hashLocation(key, slot) -> location { mstore(0x80, key) mstore(0xa0, slot) location := keccak256(0x80, 0x40) } // The `iszero(eq(,))` check ensures that large values of `quantity` // that overflows uint256 will make the loop run out of gas. // The compiler will optimize the `iszero` away for performance. for { let tokenId := add(startTokenId, 1) } iszero(eq(tokenId, end)) { tokenId := add(tokenId, 1) } { /// @custom:audit adding compared to OpenSea original contract // minterOf[tokenId] = to sstore(hashLocation(tokenId, minterOf.slot), to) // Emit the `Transfer` event. Similar to above. log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId) } } if (toMasked == 0) revert MintToZeroAddress(); _currentIndex = end; } _afterTokenTransfers(address(0), to, startTokenId, quantity); } /** * @dev This mint function excludes update of `minterOf`. * @dev Mints `quantity` tokens and transfers them to `to`. * * This function is intended for efficient minting only during contract creation. * * It emits only one {ConsecutiveTransfer} as defined in * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309), * instead of a sequence of {Transfer} event(s). * * Calling this function outside of contract creation WILL make your contract * non-compliant with the ERC721 standard. * For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309 * {ConsecutiveTransfer} event is only permissible during contract creation. * * Requirements: * * - `to` cannot be the zero address. * - `quantity` must be greater than 0. * * Emits a {ConsecutiveTransfer} event. */ function _mintERC2309(address to, uint256 quantity) internal virtual { uint256 startTokenId = _currentIndex; if (to == address(0)) revert MintToZeroAddress(); if (quantity == 0) revert MintZeroQuantity(); if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT) revert MintERC2309QuantityExceedsLimit(); _beforeTokenTransfers(address(0), to, startTokenId, quantity); // Overflows are unrealistic due to the above check for `quantity` to be below the limit. unchecked { // Updates: // - `balance += quantity`. // - `numberMinted += quantity`. // // We can directly add to the `balance` and `numberMinted`. _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1); // Updates: // - `address` to the owner. // - `startTimestamp` to the timestamp of minting. // - `burned` to `false`. // - `nextInitialized` to `quantity == 1`. _packedOwnerships[startTokenId] = _packOwnershipData( to, _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0) ); emit ConsecutiveTransfer( startTokenId, startTokenId + quantity - 1, address(0), to ); _currentIndex = startTokenId + quantity; } _afterTokenTransfers(address(0), to, startTokenId, quantity); } /** * @dev Safely mints `quantity` tokens and transfers them to `to`. * * Requirements: * * - If `to` refers to a smart contract, it must implement * {IERC721Receiver-onERC721Received}, which is called for each safe transfer. * - `quantity` must be greater than 0. * * See {_mint}. * * Emits a {Transfer} event for each mint. */ function _safeMint( address to, uint256 quantity, bytes memory _data ) internal virtual { _mint(to, quantity); unchecked { if (to.code.length != 0) { uint256 end = _currentIndex; uint256 index = end - quantity; do { if ( !_checkContractOnERC721Received( address(0), to, index++, _data ) ) { revert TransferToNonERC721ReceiverImplementer(); } } while (index < end); // Reentrancy protection. if (_currentIndex != end) revert(); } } } /** * @dev Equivalent to `_safeMint(to, quantity, '')`. */ function _safeMint(address to, uint256 quantity) internal virtual { _safeMint(to, quantity, ""); } // ============================================================= // BURN OPERATIONS // ============================================================= /** * @dev Equivalent to `_burn(tokenId, false)`. */ function _burn(uint256 tokenId) internal virtual { _burn(tokenId, false); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId, bool approvalCheck) internal virtual { uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId); address from = address(uint160(prevOwnershipPacked)); ( uint256 approvedAddressSlot, address approvedAddress ) = _getApprovedSlotAndAddress(tokenId); if (approvalCheck) { // The nested ifs save around 20+ gas over a compound boolean condition. if ( !_isSenderApprovedOrOwner( approvedAddress, from, _msgSenderERC721A() ) ) { if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved(); } } _beforeTokenTransfers(from, address(0), tokenId, 1); // Clear approvals from the previous owner. assembly { if approvedAddress { // This is equivalent to `delete _tokenApprovals[tokenId]`. sstore(approvedAddressSlot, 0) } } // Underflow of the sender's balance is impossible because we check for // ownership above and the recipient's balance can't realistically overflow. // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256. unchecked { // Updates: // - `balance -= 1`. // - `numberBurned += 1`. // // We can directly decrement the balance, and increment the number burned. // This is equivalent to `packed -= 1; packed += 1 << _BITPOS_NUMBER_BURNED;`. _packedAddressData[from] += (1 << _BITPOS_NUMBER_BURNED) - 1; // Updates: // - `address` to the last owner. // - `startTimestamp` to the timestamp of burning. // - `burned` to `true`. // - `nextInitialized` to `true`. _packedOwnerships[tokenId] = _packOwnershipData( from, (_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) | _nextExtraData(from, address(0), prevOwnershipPacked) ); // If the next slot may not have been initialized (i.e. `nextInitialized == false`) . if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) { uint256 nextTokenId = tokenId + 1; // If the next slot's address is zero and not burned (i.e. packed value is zero). if (_packedOwnerships[nextTokenId] == 0) { // If the next slot is within bounds. if (nextTokenId != _currentIndex) { // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`. _packedOwnerships[nextTokenId] = prevOwnershipPacked; } } } } emit Transfer(from, address(0), tokenId); _afterTokenTransfers(from, address(0), tokenId, 1); // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times. unchecked { _burnCounter++; } } // ============================================================= // EXTRA DATA OPERATIONS // ============================================================= /** * @dev Directly sets the extra data for the ownership data `index`. */ function _setExtraDataAt( uint256 index, uint24 extraData ) internal virtual { uint256 packed = _packedOwnerships[index]; if (packed == 0) revert OwnershipNotInitializedForExtraData(); uint256 extraDataCasted; // Cast `extraData` with assembly to avoid redundant masking. assembly { extraDataCasted := extraData } packed = (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) | (extraDataCasted << _BITPOS_EXTRA_DATA); _packedOwnerships[index] = packed; } /** * @dev Called during each token transfer to set the 24bit `extraData` field. * Intended to be overridden by the cosumer contract. * * `previousExtraData` - the value of `extraData` before transfer. * * 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, `tokenId` will be burned by `from`. * - `from` and `to` are never both zero. */ function _extraData( address from, address to, uint24 previousExtraData ) internal view virtual returns (uint24) {} /** * @dev Returns the next extra data for the packed ownership data. * The returned result is shifted into position. */ function _nextExtraData( address from, address to, uint256 prevOwnershipPacked ) private view returns (uint256) { uint24 extraData = uint24(prevOwnershipPacked >> _BITPOS_EXTRA_DATA); return uint256(_extraData(from, to, extraData)) << _BITPOS_EXTRA_DATA; } // ============================================================= // OTHER OPERATIONS // ============================================================= /** * @dev Returns the message sender (defaults to `msg.sender`). * * If you are writing GSN compatible contracts, you need to override this function. */ function _msgSenderERC721A() internal view virtual returns (address) { return msg.sender; } /** * @dev Converts a uint256 to its ASCII string decimal representation. */ function _toString( uint256 value ) internal pure virtual returns (string memory str) { assembly { // The maximum value of a uint256 contains 78 digits (1 byte per digit), but // we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned. // We will need 1 word for the trailing zeros padding, 1 word for the length, // and 3 words for a maximum of 78 digits. Total: 5 * 0x20 = 0xa0. let m := add(mload(0x40), 0xa0) // Update the free memory pointer to allocate. mstore(0x40, m) // Assign the `str` to the end. str := sub(m, 0x20) // Zeroize the slot after the string. mstore(str, 0) // Cache the end of the memory to calculate the length later. let end := str // We write the string from rightmost digit to leftmost digit. // The following is essentially a do-while loop that also handles the zero case. // prettier-ignore for { let temp := value } 1 {} { str := sub(str, 1) // Write the character to the pointer. // The ASCII index of the '0' character is 48. mstore8(str, add(48, mod(temp, 10))) // Keep dividing `temp` until zero. temp := div(temp, 10) // prettier-ignore if iszero(temp) { break } } let length := sub(end, str) // Move the pointer 32 bytes leftwards to make room for the length. str := sub(str, 0x20) // Store the length. mstore(str, length) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable2Step.sol) pragma solidity ^0.8.0; import "./OwnableUpgradeable.sol"; import "../proxy/utils/Initializable.sol"; /** * @dev Contract module which provides 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} and {acceptOwnership}. * * This module is used through inheritance. It will make available all functions * from parent (Ownable). */ abstract contract Ownable2StepUpgradeable is Initializable, OwnableUpgradeable { function __Ownable2Step_init() internal onlyInitializing { __Ownable_init_unchained(); } function __Ownable2Step_init_unchained() internal onlyInitializing { } address private _pendingOwner; event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner); /** * @dev Returns the address of the pending owner. */ function pendingOwner() public view virtual returns (address) { return _pendingOwner; } /** * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one. * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual override onlyOwner { _pendingOwner = newOwner; emit OwnershipTransferStarted(owner(), newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner. * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual override { delete _pendingOwner; super._transferOwnership(newOwner); } /** * @dev The new owner accepts the ownership transfer. */ function acceptOwnership() public virtual { address sender = _msgSender(); require(pendingOwner() == sender, "Ownable2Step: caller is not the new owner"); _transferOwnership(sender); } /** * @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/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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (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 * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or 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 { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // 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 /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // ERC721A Contracts v4.2.2 // Creator: Chiru Labs pragma solidity ^0.8.4; /** * @dev Interface of ERC721A. */ interface IERC721A { /** * The caller must own the token or be an approved operator. */ error ApprovalCallerNotOwnerNorApproved(); /** * The token does not exist. */ error ApprovalQueryForNonexistentToken(); /** * The caller cannot approve to their own address. */ error ApproveToCaller(); /** * Cannot query the balance for the zero address. */ error BalanceQueryForZeroAddress(); /** * Cannot mint to the zero address. */ error MintToZeroAddress(); /** * The quantity of tokens minted must be more than zero. */ error MintZeroQuantity(); /** * The token does not exist. */ error OwnerQueryForNonexistentToken(); /** * The caller must own the token or be an approved operator. */ error TransferCallerNotOwnerNorApproved(); /** * The token must be owned by `from`. */ error TransferFromIncorrectOwner(); /** * Cannot safely transfer to a contract that does not implement the * ERC721Receiver interface. */ error TransferToNonERC721ReceiverImplementer(); /** * Cannot transfer to the zero address. */ error TransferToZeroAddress(); /** * The token does not exist. */ error URIQueryForNonexistentToken(); /** * The `quantity` minted with ERC2309 exceeds the safety limit. */ error MintERC2309QuantityExceedsLimit(); /** * The `extraData` cannot be set on an unintialized ownership slot. */ error OwnershipNotInitializedForExtraData(); // ============================================================= // STRUCTS // ============================================================= struct TokenOwnership { // The address of the owner. address addr; // Stores the start time of ownership with minimal overhead for tokenomics. uint64 startTimestamp; // Whether the token has been burned. bool burned; // Arbitrary data similar to `startTimestamp` that can be set via {_extraData}. uint24 extraData; } // ============================================================= // TOKEN COUNTERS // ============================================================= /** * @dev Returns the total number of tokens in existence. * Burned tokens will reduce the count. * To get the total number of tokens minted, please see {_totalMinted}. */ function totalSupply() external view returns (uint256); // ============================================================= // IERC165 // ============================================================= /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified) * to learn more about how these ids are created. * * This function call must use less than 30000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); // ============================================================= // IERC721 // ============================================================= /** * @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`, * 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, bytes calldata data ) external; /** * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` 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); // ============================================================= // IERC721Metadata // ============================================================= /** * @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); // ============================================================= // IERC2309 // ============================================================= /** * @dev Emitted when tokens in `fromTokenId` to `toTokenId` * (inclusive) is transferred from `from` to `to`, as defined in the * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard. * * See {_mintERC2309} for more details. */ event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (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 Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling 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/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; }
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