ERC-721
Overview
Max Total Supply
9,048 FERALFILE
Holders
129
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
2 FERALFILELoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
FeralfileExhibitionV4_2
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 200 runs
Other Settings:
london EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {Nonces} from "./Nonces.sol"; import {FeralfileExhibitionV4_1} from "./FeralfileArtworkV4_1.sol"; import {IFeralfileVaultV2} from "./IFeralfileVaultV2.sol"; import {FeralfileSaleDataV2} from "./FeralfileSaleDataV2.sol"; contract FeralfileExhibitionV4_2 is FeralfileExhibitionV4_1, FeralfileSaleDataV2, Nonces { error SeriesLengthMismatch(); error NotEnoughToken(); error TokenIDNotFound(); error FunctionNotSupported(); error SaleNotStarted(); error InvalidPaymentAmount(); error TotalBpsOver(); error InvalidAddress(); // vault contract instance IFeralfileVaultV2 public vaultV2; mapping(uint256 => uint256) private seriesNextPurchasableTokenIds; // seriesID -> tokenID constructor( string memory name_, string memory symbol_, bool burnable_, bool bridgeable_, address signer_, address vault_, address costReceiver_, string memory contractURI_, uint256[] memory seriesIds_, uint256[] memory seriesMaxSupplies_, uint256[] memory seriesNextPurchasableTokenIds_ ) FeralfileExhibitionV4_1( name_, symbol_, burnable_, bridgeable_, signer_, vault_, costReceiver_, contractURI_, seriesIds_, seriesMaxSupplies_ ) { if(seriesIds_.length != seriesNextPurchasableTokenIds_.length) { revert SeriesLengthMismatch(); } vaultV2 = IFeralfileVaultV2(payable(vault_)); for (uint256 i = 0; i < seriesIds_.length; i++) { seriesNextPurchasableTokenIds[seriesIds_[i]] = seriesNextPurchasableTokenIds_[i]; } } /// @notice Set vaultV2 contract /// @dev don't allow to set vaultV2 as zero address function setVaultV2(address vault_) external onlyOwner { if (vault_ == address(0)) { revert InvalidAddress(); } vaultV2 = IFeralfileVaultV2(payable(vault_)); } /// @notice override revert setVault function setVault(address) external pure override { revert FunctionNotSupported(); } /// @notice pay to get artworks to a destination address. The pricing, costs and other details is included in the saleData /// @param r_ - part of signature for validating parameters integrity /// @param s_ - part of signature for validating parameters integrity /// @param v_ - part of signature for validating parameters integrity /// @param saleData_ - the sale data function buyBulkArtworks( bytes32 r_, bytes32 s_, uint8 v_, SaleDataV2 calldata saleData_ ) external payable { if (!_selling) { revert SaleNotStarted(); } uint256 balance = balanceOf(address(this)); if (balance < saleData_.quantity) { revert NotEnoughToken(); } validateSaleDataV2(saleData_); bytes32 message = keccak256( abi.encode(block.chainid, address(this), saleData_) ); if (!isValidSignature(message, r_, s_, v_)) { revert InvalidSignature(); } //check nonce _useCheckedNonce(saleData_.destination, saleData_.nonce); if (saleData_.payByVaultContract) { vaultV2.payForSaleV2(r_, s_, v_, saleData_); } else { if (saleData_.price != msg.value) { revert InvalidPaymentAmount(); } } if (saleData_.price < saleData_.cost) { revert InvalidPaymentAmount(); } uint256 totalRevenue = saleData_.price - saleData_.cost; uint256 nextPurchasableTokenId = seriesNextPurchasableTokenIds[saleData_.seriesID]; uint256 i = 0; while (i < saleData_.quantity) { uint256 tokenIdForSale = nextPurchasableTokenId; if (!_exists(tokenIdForSale)) { revert TokenIDNotFound(); } nextPurchasableTokenId++; if (ownerOf(tokenIdForSale) != address(this)) { continue; } // send NFT _safeTransfer( address(this), saleData_.destination, tokenIdForSale, "" ); emit BuyArtworkV2( saleData_.destination, tokenIdForSale, saleData_.nonce ); i++; } // save next sale token id for seriesID seriesNextPurchasableTokenIds[saleData_.seriesID] = nextPurchasableTokenId; // distribute royalty uint256 distributedRevenue; uint256 platformRevenue; RevenueShare[] memory revenueShares = saleData_.revenueShares; uint256 remainingRev = totalRevenue; // deduct advances payment from revenue for (uint256 j = 0; j < revenueShares.length && remainingRev > 0; j++) { uint256 remainingAdvanceAmount = advances[ revenueShares[j].recipient ]; if (remainingAdvanceAmount == 0) { continue; } uint256 prePaidRev = remainingAdvanceAmount >= remainingRev ? remainingRev : remainingAdvanceAmount; platformRevenue += prePaidRev; advances[revenueShares[j].recipient] -= prePaidRev; remainingRev -= prePaidRev; } // distribute revenue if (remainingRev > 0) { for (uint256 j = 0; j < revenueShares.length; j++) { address recipient = revenueShares[j].recipient; uint256 rev = (remainingRev * revenueShares[j].bps) / 10000; if (recipient == costReceiver) { platformRevenue += rev; continue; } distributedRevenue += rev; payable(recipient).transfer(rev); } } if ( saleData_.price - saleData_.cost < distributedRevenue + platformRevenue ) { revert TotalBpsOver(); } // Transfer cost, platform revenue and remaining funds uint256 leftOver = saleData_.price - distributedRevenue; if (leftOver > 0) { payable(costReceiver).transfer(leftOver); } } /// @notice override revert buyArtworks function buyArtworks( bytes32, bytes32, uint8, SaleData calldata ) external payable override { revert FunctionNotSupported(); } /// @notice Event emitted when Artwork has been sold with the additional nonce event BuyArtworkV2( address indexed buyer, uint256 indexed tokenId, uint256 nonce ); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; interface IOperatorFilterRegistry { function isOperatorAllowed(address registrant, address operator) external view returns (bool); function register(address registrant) external; function registerAndSubscribe(address registrant, address subscription) external; function registerAndCopyEntries(address registrant, address registrantToCopy) external; function unregister(address addr) external; function updateOperator(address registrant, address operator, bool filtered) external; function updateOperators(address registrant, address[] calldata operators, bool filtered) external; function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external; function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external; function subscribe(address registrant, address registrantToSubscribe) external; function unsubscribe(address registrant, bool copyExistingEntries) external; function subscriptionOf(address addr) external returns (address registrant); function subscribers(address registrant) external returns (address[] memory); function subscriberAt(address registrant, uint256 index) external returns (address); function copyEntriesOf(address registrant, address registrantToCopy) external; function isOperatorFiltered(address registrant, address operator) external returns (bool); function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool); function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool); function filteredOperators(address addr) external returns (address[] memory); function filteredCodeHashes(address addr) external returns (bytes32[] memory); function filteredOperatorAt(address registrant, uint256 index) external returns (address); function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32); function isRegistered(address addr) external returns (bool); function codeHashOf(address addr) external returns (bytes32); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {IOperatorFilterRegistry} from "./operator-filter-registry/IOperatorFilterRegistry.sol"; import "./Authorizable.sol"; /** * @title UpdateableOperatorFilterer * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another * registrant's entries in the OperatorFilterRegistry. * @dev This smart contract is meant to be inherited by token contracts so they can use the following: * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods. * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods. */ abstract contract UpdateableOperatorFilterer is Authorizable { error OperatorNotAllowed(address operator); address constant DEFAULT_OPERATOR_FILTER_REGISTRY_ADDRESS = address(0x000000000000AAeB6D7670E522A718067333cd4E); address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6); IOperatorFilterRegistry public OperatorFilterRegistry = IOperatorFilterRegistry(DEFAULT_OPERATOR_FILTER_REGISTRY_ADDRESS); constructor() { if (address(OperatorFilterRegistry).code.length > 0) { OperatorFilterRegistry.registerAndSubscribe( address(this), DEFAULT_SUBSCRIPTION ); } } modifier onlyAllowedOperator(address from) virtual { // Allow spending tokens from addresses with balance // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred // from an EOA. if (from != msg.sender) { _checkFilterOperator(msg.sender); } _; } modifier onlyAllowedOperatorApproval(address operator) virtual { _checkFilterOperator(operator); _; } function _checkFilterOperator(address operator) internal view virtual { // Check registry code length to facilitate testing in environments without a deployed registry. if (address(OperatorFilterRegistry).code.length > 0) { require( OperatorFilterRegistry.isOperatorAllowed( address(this), operator ), "operator is not allowed" ); } } /** * @notice update the operator filter registry */ function updateOperatorFilterRegistry(address operatorFilterRegisterAddress) external onlyOwner { OperatorFilterRegistry = IOperatorFilterRegistry( operatorFilterRegisterAddress ); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Provides tracking nonces for addresses. Nonces will only increment. */ abstract contract Nonces { /** * @dev The nonce used for an `account` is not the expected current nonce. */ error InvalidAccountNonce(address account, uint256 currentNonce); mapping(address => uint256) private _nonces; /** * @dev Returns the next unused nonce for an address. */ function nonces(address owner) public view virtual returns (uint256) { return _nonces[owner]; } /** * @dev Consumes a nonce. * * Returns the current value and increments nonce. */ function _useNonce(address owner) internal virtual returns (uint256) { // For each account, the nonce has an initial value of 0, can only be incremented by one, and cannot be // decremented or reset. This guarantees that the nonce never overflows. unchecked { // It is important to do x++ and not ++x here. return _nonces[owner]++; } } /** * @dev Same as {_useNonce} but checking that `nonce` is the next valid for `owner`. */ function _useCheckedNonce(address owner, uint256 nonce) internal virtual { uint256 current = _useNonce(owner); if (nonce != current) { revert InvalidAccountNonce(owner, current); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {IFeralfileSaleDataV2} from "./IFeralfileSaleDataV2.sol"; interface IFeralfileVaultV2 is IFeralfileSaleDataV2 { function payForSaleV2( bytes32 r_, bytes32 s_, uint8 v_, SaleDataV2 calldata saleData_ ) external; function withdrawFund(uint256 weiAmount) external; receive() external payable; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/access/Ownable.sol"; import "./IFeralfileSaleData.sol"; import "./ECDSASigner.sol"; interface IFeralfileVault is IFeralfileSaleData { function payForSale( bytes32 r_, bytes32 s_, uint8 v_, SaleData calldata saleData_ ) external; function withdrawFund(uint256 weiAmount) external; receive() external payable; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {IFeralfileSaleData} from "./IFeralfileSaleData.sol"; interface IFeralfileSaleDataV2 is IFeralfileSaleData { struct SaleDataV2 { uint256 price; // in wei uint256 cost; // in wei uint256 expiryTime; address destination; uint256 nonce; uint256 seriesID; uint16 quantity; RevenueShare[] revenueShares; // address and royalty bps (500 means 5%) bool payByVaultContract; // get eth from vault contract, used by credit card pay that proxy by ITX } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; interface IFeralfileSaleData { struct RevenueShare { address recipient; uint256 bps; } struct SaleData { uint256 price; // in wei uint256 cost; // in wei uint256 expiryTime; address destination; uint256[] tokenIds; RevenueShare[][] revenueShares; // address and royalty bps (500 means 5%) bool payByVaultContract; // get eth from vault contract, used by credit card pay that proxy by ITX } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {IFeralfileSaleDataV2} from "./IFeralfileSaleDataV2.sol"; contract FeralfileSaleDataV2 is IFeralfileSaleDataV2 { function validateSaleDataV2(SaleDataV2 calldata saleData_) internal view { require( saleData_.expiryTime > block.timestamp, "FeralfileSaleData: sale is expired" ); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import "./IFeralfileSaleData.sol"; contract FeralfileSaleData is IFeralfileSaleData { function validateSaleData(SaleData calldata saleData_) internal view { require( saleData_.tokenIds.length > 0, "FeralfileSaleData: tokenIds is empty" ); require( saleData_.tokenIds.length == saleData_.revenueShares.length, "FeralfileSaleData: tokenIds and revenueShares length mismatch" ); require( saleData_.expiryTime > block.timestamp, "FeralfileSaleData: sale is expired" ); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import "./FeralfileArtworkV4.sol"; contract FeralfileExhibitionV4_1 is FeralfileExhibitionV4 { mapping(address => uint256) public advances; error InvalidAdvanceAddressesAndAmounts(); error InvalidAdvanceAddress(); error InvalidAdvanceAmount(); error InvalidSignature(); error AdvanceAddressAlreadyUsed(); constructor( string memory name_, string memory symbol_, bool burnable_, bool bridgeable_, address signer_, address vault_, address costReceiver_, string memory contractURI_, uint256[] memory seriesIds_, uint256[] memory seriesMaxSupplies_ ) FeralfileExhibitionV4( name_, symbol_, burnable_, bridgeable_, signer_, vault_, costReceiver_, contractURI_, seriesIds_, seriesMaxSupplies_ ) {} /// @notice set advances setting /// @param addresses_ - the addresses to set advances /// @param amounts_ - the amounts to set advances function setAdvanceSetting( address[] calldata addresses_, uint256[] calldata amounts_ ) external onlyOwner { if (addresses_.length != amounts_.length) { revert InvalidAdvanceAddressesAndAmounts(); } for (uint256 i = 0; i < addresses_.length; i++) { if (addresses_[i] == address(0)) { revert InvalidAdvanceAddress(); } if (amounts_[i] == 0) { revert InvalidAdvanceAmount(); } if (advances[addresses_[i]] > 0) { revert AdvanceAddressAlreadyUsed(); } advances[addresses_[i]] = amounts_[i]; } } /// @notice replace advance addresses /// @param oldAddresses_ - the old addresses to replace /// @param newAddresses_ - the new addresses to replace function replaceAdvanceAddresses( address[] calldata oldAddresses_, address[] calldata newAddresses_ ) external onlyOwner { if (oldAddresses_.length != newAddresses_.length) { revert InvalidAdvanceAddressesAndAmounts(); } for (uint256 i = 0; i < oldAddresses_.length; i++) { if (newAddresses_[i] == address(0)) { revert InvalidAdvanceAddress(); } if (advances[newAddresses_[i]] > 0) { revert AdvanceAddressAlreadyUsed(); } advances[newAddresses_[i]] = advances[oldAddresses_[i]]; delete advances[oldAddresses_[i]]; } } /// @notice pay to get artworks to a destination address. The pricing, costs and other details is included in the saleData /// @param r_ - part of signature for validating parameters integrity /// @param s_ - part of signature for validating parameters integrity /// @param v_ - part of signature for validating parameters integrity /// @param saleData_ - the sale data function buyArtworks( bytes32 r_, bytes32 s_, uint8 v_, SaleData calldata saleData_ ) external payable override virtual { require(_selling, "FeralfileExhibitionV4: sale is not started"); super._checkContractOwnedToken(); validateSaleData(saleData_); saleData_.payByVaultContract ? vault.payForSale(r_, s_, v_, saleData_) : require( saleData_.price == msg.value, "FeralfileExhibitionV4: invalid payment amount" ); bytes32 message = keccak256( abi.encode(block.chainid, address(this), saleData_) ); if (!isValidSignature(message, r_, s_, v_)) { revert InvalidSignature(); } uint256 itemRevenue; if (saleData_.price > saleData_.cost) { itemRevenue = (saleData_.price - saleData_.cost) / saleData_.tokenIds.length; } uint256 distributedRevenue; uint256 platformRevenue; for (uint256 i = 0; i < saleData_.tokenIds.length; i++) { // send NFT _safeTransfer( address(this), saleData_.destination, saleData_.tokenIds[i], "" ); // distribute royalty RevenueShare[] memory revenueShares = saleData_.revenueShares[i]; uint256 remainingRev = itemRevenue; // deduct advances payment from revenue for ( uint256 j = 0; j < revenueShares.length && remainingRev > 0; j++ ) { uint256 remainingAdvanceAmount = advances[ revenueShares[j].recipient ]; uint256 rev = remainingAdvanceAmount >= remainingRev ? remainingRev : remainingAdvanceAmount; platformRevenue += rev; advances[revenueShares[j].recipient] -= rev; remainingRev -= rev; } // distribute revenue if (remainingRev > 0) { for (uint256 j = 0; j < revenueShares.length; j++) { address recipient = revenueShares[j].recipient; uint256 rev = (remainingRev * revenueShares[j].bps) / 10000; if (recipient == costReceiver) { platformRevenue += rev; continue; } distributedRevenue += rev; payable(recipient).transfer(rev); } } emit BuyArtwork(saleData_.destination, saleData_.tokenIds[i]); } require( saleData_.price - saleData_.cost >= distributedRevenue + platformRevenue, "FeralfileExhibitionV4: total bps over 10,000" ); // Transfer cost, platform revenue and remaining funds uint256 leftOver = saleData_.price - distributedRevenue; if (leftOver > 0) { payable(costReceiver).transfer(leftOver); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import "./Authorizable.sol"; import "./UpdateableOperatorFilterer.sol"; import "./FeralfileSaleData.sol"; import "./ECDSASigner.sol"; import "./IFeralfileVault.sol"; contract FeralfileExhibitionV4 is ERC721, Authorizable, UpdateableOperatorFilterer, FeralfileSaleData, ECDSASigner { using Strings for uint256; struct Artwork { uint256 seriesId; uint256 tokenId; } struct MintData { uint256 seriesId; uint256 tokenId; address owner; } // version code of contract string public constant codeVersion = "FeralfileExhibitionV4"; // token base URI string public tokenBaseURI; // contract URI string public contractURI; // total supply uint256 public totalSupply; // burnable bool public burnable; // bridgeable bool public bridgeable; // selling bool internal _selling; // mintable bool public mintable = true; // cost receiver address public costReceiver; // vault contract instance IFeralfileVault public vault; // series max supplies mapping(uint256 => uint256) internal _seriesMaxSupplies; // series total supplies mapping(uint256 => uint256) internal _seriesTotalSupplies; // all artworks mapping(uint256 => Artwork) internal _allArtworks; // Mapping from owner to list of owned token IDs mapping(address => uint256[]) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; constructor( string memory name_, string memory symbol_, bool burnable_, bool bridgeable_, address signer_, address vault_, address costReceiver_, string memory contractURI_, uint256[] memory seriesIds_, uint256[] memory seriesMaxSupplies_ ) ERC721(name_, symbol_) ECDSASigner(signer_) { // validations require( bytes(name_).length > 0, "FeralfileExhibitionV4: name_ is empty" ); require( bytes(symbol_).length > 0, "FeralfileExhibitionV4: symbol_ is empty" ); require( vault_ != address(0), "FeralfileExhibitionV4: vaultAddress_ is zero address" ); require( costReceiver_ != address(0), "FeralfileExhibitionV4: costReceiver_ is zero address" ); require( bytes(contractURI_).length > 0, "FeralfileExhibitionV4: contractURI_ is empty" ); require( seriesIds_.length > 0, "FeralfileExhibitionV4: seriesIds_ is empty" ); require( seriesMaxSupplies_.length > 0, "FeralfileExhibitionV4: _seriesMaxSupplies is empty" ); require( seriesIds_.length == seriesMaxSupplies_.length, "FeralfileExhibitionV4: seriesMaxSupplies_ and seriesIds_ lengths are not the same" ); burnable = burnable_; bridgeable = bridgeable_; costReceiver = costReceiver_; vault = IFeralfileVault(payable(vault_)); contractURI = contractURI_; // initialize max supply map for (uint256 i = 0; i < seriesIds_.length; i++) { // Check duplicate with others for (uint256 j = i + 1; j < seriesIds_.length; j++) { if (seriesIds_[i] == seriesIds_[j]) { revert("FeralfileExhibitionV4: duplicate seriesId"); } } require( seriesMaxSupplies_[i] > 0, "FeralfileExhibitionV4: zero max supply" ); _seriesMaxSupplies[seriesIds_[i]] = seriesMaxSupplies_[i]; } } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex( address owner, uint256 index ) external view returns (uint256) { require( index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds" ); return _ownedTokens[owner][index]; } /// @notice Get token ID from owner function tokensOfOwner( address owner ) external view returns (uint256[] memory) { return _ownedTokens[owner]; } /// @notice Get series max supply /// @param seriesId a series ID /// @return uint256 the max supply function seriesMaxSupply( uint256 seriesId ) external view virtual returns (uint256) { return _seriesMaxSupplies[seriesId]; } /// @notice Get series total supply /// @param seriesId a series ID /// @return uint256 the total supply function seriesTotalSupply( uint256 seriesId ) external view virtual returns (uint256) { return _seriesTotalSupplies[seriesId]; } /// @notice Get artwork data /// @param tokenId a token ID representing the artwork /// @return Artwork the Artwork object function getArtwork( uint256 tokenId ) external view virtual returns (Artwork memory) { require(_exists(tokenId), "ERC721: invalid token ID"); return _allArtworks[tokenId]; } /// @notice Set vault contract /// @dev don't allow to set vault as zero address function setVault(address vault_) external virtual onlyOwner { require( vault_ != address(0), "FeralfileExhibitionV4: vault_ is zero address" ); vault = IFeralfileVault(payable(vault_)); } /// @notice Return flag _selling; function selling() external view returns (bool) { return _selling; } function _checkContractOwnedToken() internal view { uint256 balance = balanceOf(address(this)); require( balance > 0, "FeralfileExhibitionV4: No token owned by the contract" ); } /// @notice Start token sale function startSale() external onlyOwner { mintable = false; resumeSale(); } /// @notice Resume token sale function resumeSale() public onlyOwner { require( !mintable, "FeralfileExhibitionV4: mintable required to be false" ); require( !_selling, "FeralfileExhibitionV4: _selling required to be false" ); _checkContractOwnedToken(); _selling = true; } /// @notice Pause token sale function pauseSale() public onlyOwner { require( !mintable, "FeralfileExhibitionV4: mintable required to be false" ); require( _selling, "FeralfileExhibitionV4: _selling required to be true" ); _selling = false; } /// @notice Stop token sale and burn remaining tokens function stopSaleAndBurn() external onlyOwner { pauseSale(); // burn remaining tokens uint256[] memory tokenIds = _ownedTokens[address(this)]; for (uint256 i = 0; i < tokenIds.length; i++) { _burnArtwork(tokenIds[i]); } } /// @notice Stop token selling and transfer remaining tokens back to the underlying addresses function stopSaleAndTransfer( uint256[] memory seriesIds, address[] memory recipientAddresses ) external onlyOwner { require( seriesIds.length > 0 && recipientAddresses.length > 0, "FeralfileExhibitionV4: seriesIds or recipientAddresses length is zero" ); require( seriesIds.length == recipientAddresses.length, "FeralfileExhibitionV4: seriesIds length is different from recipientAddresses" ); pauseSale(); // transfer tokens back to the addresses address from = address(this); uint256[] memory tokenIds = _ownedTokens[from]; for (uint256 i = 0; i < tokenIds.length; i++) { uint256 tokenId = tokenIds[i]; Artwork memory artwork = _allArtworks[tokenId]; for (uint16 j = 0; j < seriesIds.length; j++) { if (artwork.seriesId == seriesIds[j]) { address to = recipientAddresses[j]; _safeTransfer(from, to, tokenId, ""); break; } } } require( balanceOf(from) == 0, "FeralfileExhibitionV4: Token for sale balance has to be zero" ); } /// @dev override for OperatorFilterRegistry function setApprovalForAll( address operator, bool approved ) public override(ERC721) onlyAllowedOperatorApproval(operator) { super.setApprovalForAll(operator, approved); } /// @dev override for OperatorFilterRegistry function approve( address operator, uint256 tokenId ) public override(ERC721) onlyAllowedOperatorApproval(operator) { super.approve(operator, tokenId); } /// @dev override for OperatorFilterRegistry function transferFrom( address from, address to, uint256 tokenId ) public override(ERC721) onlyAllowedOperator(from) { require( to != address(this), "FeralfileExhibitionV4: Contract isn't allowed to receive token" ); super.transferFrom(from, to, tokenId); } /// @dev override for OperatorFilterRegistry function safeTransferFrom( address from, address to, uint256 tokenId ) public override(ERC721) onlyAllowedOperator(from) { require( to != address(this), "FeralfileExhibitionV4: Contract isn't allowed to receive token" ); super.safeTransferFrom(from, to, tokenId); } /// @dev override for OperatorFilterRegistry function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory data ) public override(ERC721) onlyAllowedOperator(from) { require( to != address(this), "FeralfileExhibitionV4: Contract isn't allowed to receive token" ); super.safeTransferFrom(from, to, tokenId, data); } /// @notice A distinct Uniform Resource Identifier (URI) for a given asset. function tokenURI( uint256 tokenId ) public view virtual override returns (string memory) { require( bytes(tokenBaseURI).length > 0, "ERC721Metadata: _tokenBaseURI is empty" ); require( _exists(tokenId), "ERC721Metadata: URI query for nonexistent token" ); return string(abi.encodePacked(tokenBaseURI, "/", tokenId.toString())); } /// @notice Update the base URI for all tokens function setTokenBaseURI(string memory baseURI_) external onlyOwner { require( bytes(baseURI_).length > 0, "ERC721Metadata: baseURI_ is empty" ); tokenBaseURI = baseURI_; } /// @notice the cost receiver address /// @param costReceiver_ - the address of cost receiver function setCostReceiver(address costReceiver_) external onlyOwner { require( costReceiver_ != address(0), "FeralfileExhibitionV4: costReceiver_ is zero address" ); costReceiver = costReceiver_; } /// @notice pay to get artworks to a destination address. The pricing, costs and other details is included in the saleData /// @param r_ - part of signature for validating parameters integrity /// @param s_ - part of signature for validating parameters integrity /// @param v_ - part of signature for validating parameters integrity /// @param saleData_ - the sale data function buyArtworks( bytes32 r_, bytes32 s_, uint8 v_, SaleData calldata saleData_ ) external payable virtual { require(_selling, "FeralfileExhibitionV4: sale is not started"); _checkContractOwnedToken(); validateSaleData(saleData_); saleData_.payByVaultContract ? vault.payForSale(r_, s_, v_, saleData_) : require( saleData_.price == msg.value, "FeralfileExhibitionV4: invalid payment amount" ); bytes32 message = keccak256( abi.encode(block.chainid, address(this), saleData_) ); require( isValidSignature(message, r_, s_, v_), "FeralfileExhibitionV4: invalid signature" ); uint256 itemRevenue; if (saleData_.price > saleData_.cost) { itemRevenue = (saleData_.price - saleData_.cost) / saleData_.tokenIds.length; } uint256 distributedRevenue; uint256 platformRevenue; for (uint256 i = 0; i < saleData_.tokenIds.length; i++) { // send NFT _safeTransfer( address(this), saleData_.destination, saleData_.tokenIds[i], "" ); if (itemRevenue > 0) { // distribute royalty for ( uint256 j = 0; j < saleData_.revenueShares[i].length; j++ ) { uint256 rev = (itemRevenue * saleData_.revenueShares[i][j].bps) / 10000; if ( saleData_.revenueShares[i][j].recipient == costReceiver ) { platformRevenue += rev; continue; } distributedRevenue += rev; payable(saleData_.revenueShares[i][j].recipient).transfer( rev ); } } emit BuyArtwork(saleData_.destination, saleData_.tokenIds[i]); } require( saleData_.price - saleData_.cost >= distributedRevenue + platformRevenue, "FeralfileExhibitionV4: total bps over 10,000" ); // Transfer cost, platform revenue and remaining funds uint256 leftOver = saleData_.price - distributedRevenue; if (leftOver > 0) { payable(costReceiver).transfer(leftOver); } } /// @notice utility function for checking the series exists function _seriesExists(uint256 seriesId) private view returns (bool) { return _seriesMaxSupplies[seriesId] > 0; } /// @dev Modify from ERC721Enumerable function _beforeTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual override { super._beforeTokenTransfer(from, to, firstTokenId, batchSize); if (batchSize > 1) { // Will only trigger during construction. Batch transferring (minting) is not available afterwards. revert("ERC721Enumerable: consecutive transfers not supported"); } uint256 tokenId = firstTokenId; if (from != address(0) && from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to != address(0) && to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /// @dev Modify from ERC721Enumerable function _removeTokenFromOwnerEnumeration( address from, uint256 tokenId ) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } delete _ownedTokensIndex[tokenId]; _ownedTokens[from].pop(); } /// @dev Modify from ERC721Enumerable function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256[] storage tokens = _ownedTokens[to]; uint256 length = tokens.length; tokens.push(tokenId); _ownedTokensIndex[tokenId] = length; } /// @notice Mint new collection of Artwork /// @dev the function iterates over the array of MintData to call the internal function _mintArtwork /// @param data an array of MintData function mintArtworks( MintData[] calldata data ) external virtual onlyAuthorized { require( mintable, "FeralfileExhibitionV4: contract doesn't allow to mint" ); for (uint256 i = 0; i < data.length; i++) { _mintArtwork(data[i].seriesId, data[i].tokenId, data[i].owner); } } function _mintArtwork( uint256 seriesId, uint256 tokenId, address owner ) internal { // pre-condition checks require( _seriesExists(seriesId), string( abi.encodePacked( "FeralfileExhibitionV4: seriesId doesn't exist: ", Strings.toString(seriesId) ) ) ); require( _seriesTotalSupplies[seriesId] < _seriesMaxSupplies[seriesId], "FeralfileExhibitionV4: no slots available" ); // mint totalSupply += 1; _seriesTotalSupplies[seriesId] += 1; _allArtworks[tokenId] = Artwork(seriesId, tokenId); _mint(owner, tokenId); // emit event emit NewArtwork(owner, seriesId, tokenId); } /// @notice Burn a collection of artworks /// @dev the function iterates over the array of token ID to call the internal function _burnArtwork /// @param tokenIds an array of token ID function burnArtworks(uint256[] memory tokenIds) external { require(burnable, "FeralfileExhibitionV4: token is not burnable"); for (uint256 i = 0; i < tokenIds.length; i++) { require( _isApprovedOrOwner(_msgSender(), tokenIds[i]), "ERC721: caller is not token owner or approved" ); _burnArtwork(tokenIds[i]); } } function _burnArtwork(uint256 tokenId) internal { require(_exists(tokenId), "ERC721: invalid token ID"); // burn artwork Artwork memory artwork = _allArtworks[tokenId]; _seriesTotalSupplies[artwork.seriesId] -= 1; totalSupply -= 1; delete _allArtworks[tokenId]; _burn(tokenId); // emit event emit BurnArtwork(tokenId); } /// @notice able to receive fund from vault contract receive() external payable { require( msg.sender == address(vault), "FeralfileExhibitionV4: only accept fund from vault contract." ); } /// @notice Event emitted when new Artwork has been minted event NewArtwork( address indexed owner, uint256 indexed seriesId, uint256 indexed tokenId ); /// @notice Event emitted when Artwork has been burned event BurnArtwork(uint256 indexed tokenId); /// @notice Event emitted when Artwork has been sold event BuyArtwork(address indexed buyer, uint256 indexed tokenId); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; contract ECDSASigner is Ownable { address private _signer; constructor(address signer_) { require(signer_ != address(0), "ECDSASign: signer_ is zero address"); _signer = signer_; } /// @notice isValidSignature validates a message by ecrecover to ensure // it is signed by signer. /// @param message_ - the raw message for signing /// @param r_ - part of signature for validating parameters integrity /// @param s_ - part of signature for validating parameters integrity /// @param v_ - part of signature for validating parameters integrity function isValidSignature( bytes32 message_, bytes32 r_, bytes32 s_, uint8 v_ ) internal view returns (bool) { address reqSigner = ECDSA.recover( ECDSA.toEthSignedMessageHash(message_), v_, r_, s_ ); return reqSigner == _signer; } /// @notice set the signer /// @param signer_ - the address of signer function setSigner(address signer_) external onlyOwner { require(signer_ != address(0), "ECDSASign: signer_ is zero address"); _signer = signer_; } function signer() external view returns (address) { return _signer; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.4.22 <0.9.0; import "@openzeppelin/contracts/access/Ownable.sol"; contract Authorizable is Ownable { mapping(address => bool) public trustees; constructor() {} modifier onlyAuthorized() { require(trustees[msg.sender] || msg.sender == owner()); _; } function addTrustee(address _trustee) public onlyOwner { trustees[_trustee] = true; } function removeTrustee(address _trustee) public onlyOwner { delete trustees[_trustee]; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol) pragma solidity ^0.8.0; /** * @dev Standard signed math utilities missing in the Solidity language. */ library SignedMath { /** * @dev Returns the largest of two signed numbers. */ function max(int256 a, int256 b) internal pure returns (int256) { return a > b ? a : b; } /** * @dev Returns the smallest of two signed numbers. */ function min(int256 a, int256 b) internal pure returns (int256) { return a < b ? a : b; } /** * @dev Returns the average of two signed numbers without overflow. * The result is rounded towards zero. */ function average(int256 a, int256 b) internal pure returns (int256) { // Formula from the book "Hacker's Delight" int256 x = (a & b) + ((a ^ b) >> 1); return x + (int256(uint256(x) >> 255) & (a ^ b)); } /** * @dev Returns the absolute unsigned value of a signed value. */ function abs(int256 n) internal pure returns (uint256) { unchecked { // must be unchecked in order to support `n = type(int256).min` return uint256(n >= 0 ? n : -n); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { // Solidity will revert if denominator == 0, unlike the div opcode on its own. // The surrounding unchecked block does not change this fact. // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic. return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1, "Math: mulDiv overflow"); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10 ** 64) { value /= 10 ** 64; result += 64; } if (value >= 10 ** 32) { value /= 10 ** 32; result += 32; } if (value >= 10 ** 16) { value /= 10 ** 16; result += 16; } if (value >= 10 ** 8) { value /= 10 ** 8; result += 8; } if (value >= 10 ** 4) { value /= 10 ** 4; result += 4; } if (value >= 10 ** 2) { value /= 10 ** 2; result += 2; } if (value >= 10 ** 1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 256, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV // Deprecated in v4.8 } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError) { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32 message) { // 32 is the length in bytes of hash, // enforced by the type signature above /// @solidity memory-safe-assembly assembly { mstore(0x00, "\x19Ethereum Signed Message:\n32") mstore(0x1c, hash) message := keccak256(0x00, 0x3c) } } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 data) { /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) mstore(ptr, "\x19\x01") mstore(add(ptr, 0x02), domainSeparator) mstore(add(ptr, 0x22), structHash) data := keccak256(ptr, 0x42) } } /** * @dev Returns an Ethereum Signed Data with intended validator, created from a * `validator` and `data` according to the version 0 of EIP-191. * * See {recover}. */ function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x00", validator, data)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/Math.sol"; import "./math/SignedMath.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `int256` to its ASCII `string` decimal representation. */ function toString(int256 value) internal pure returns (string memory) { return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value)))); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } /** * @dev Returns true if the two strings are equal. */ function equal(string memory a, string memory b) internal pure returns (bool) { return keccak256(bytes(a)) == keccak256(bytes(b)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @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 Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// 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 Address { /** * @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 // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external; /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must * understand this adds an external call which potentially creates a reentrancy vulnerability. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 tokenId) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool approved) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: address zero is not a valid owner"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _ownerOf(tokenId); require(owner != address(0), "ERC721: invalid token ID"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { _requireMinted(tokenId); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overridden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not token owner or approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { _requireMinted(tokenId); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom(address from, address to, uint256 tokenId) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved"); _safeTransfer(from, to, tokenId, data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist */ function _ownerOf(uint256 tokenId) internal view virtual returns (address) { return _owners[tokenId]; } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _ownerOf(tokenId) != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { address owner = ERC721.ownerOf(tokenId); return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId, 1); // Check that tokenId was not minted by `_beforeTokenTransfer` hook require(!_exists(tokenId), "ERC721: token already minted"); unchecked { // Will not overflow unless all 2**256 token ids are minted to the same owner. // Given that tokens are minted one by one, it is impossible in practice that // this ever happens. Might change if we allow batch minting. // The ERC fails to describe this case. _balances[to] += 1; } _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId, 1); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * This is an internal function that does not check if the sender is authorized to operate on the token. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId, 1); // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook owner = ERC721.ownerOf(tokenId); // Clear approvals delete _tokenApprovals[tokenId]; unchecked { // Cannot overflow, as that would require more tokens to be burned/transferred // out than the owner initially received through minting and transferring in. _balances[owner] -= 1; } delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), tokenId, 1); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer(address from, address to, uint256 tokenId) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId, 1); // Check that tokenId was not transferred by `_beforeTokenTransfer` hook require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); // Clear approvals from the previous owner delete _tokenApprovals[tokenId]; unchecked { // `_balances[from]` cannot overflow for the same reason as described in `_burn`: // `from`'s balance is the number of token held, which is at least one before the current // transfer. // `_balances[to]` could overflow in the conditions described in `_mint`. That would require // all 2**256 token ids to be minted, which in practice is impossible. _balances[from] -= 1; _balances[to] += 1; } _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId, 1); } /** * @dev Approve `to` to operate on `tokenId` * * Emits an {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits an {ApprovalForAll} event. */ function _setApprovalForAll(address owner, address operator, bool approved) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Reverts if the `tokenId` has not been minted yet. */ function _requireMinted(uint256 tokenId) internal view virtual { require(_exists(tokenId), "ERC721: invalid token ID"); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { /// @solidity memory-safe-assembly assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`. * - When `from` is zero, the tokens will be minted for `to`. * - When `to` is zero, ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * - `batchSize` is non-zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {} /** * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`. * - When `from` is zero, the tokens were minted for `to`. * - When `to` is zero, ``from``'s tokens were burned. * - `from` and `to` are never both zero. * - `batchSize` is non-zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {} /** * @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override. * * WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant * being that for any address `a` the value returned by `balanceOf(a)` must be equal to the number of tokens such * that `ownerOf(tokenId)` is `a`. */ // solhint-disable-next-line func-name-mixedcase function __unsafe_increaseBalance(address account, uint256 amount) internal { _balances[account] += amount; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.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 Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _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); } }
{ "remappings": [], "optimizer": { "enabled": true, "runs": 200 }, "evmVersion": "london", "libraries": {}, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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IFeralfileVault","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vaultV2","outputs":[{"internalType":"contract IFeralfileVaultV2","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : name_ (string): crystalline work
Arg [1] : symbol_ (string): FERALFILE
Arg [2] : burnable_ (bool): True
Arg [3] : bridgeable_ (bool): True
Arg [4] : signer_ (address): 0xBEb9F810862c40A144925f568b1853d72Acc492F
Arg [5] : vault_ (address): 0xcBFaf4BDE69C9b37835761E5228f9fe9E25b452f
Arg [6] : costReceiver_ (address): 0x080FEB125bA730D6D12789B6AAAB01f4E31D8Bd1
Arg [7] : contractURI_ (string): ipfs://QmZuygbgeVDZ8NBBpD3oSVUAibTTgKYnKvYWikdGp7HwNb
Arg [8] : seriesIds_ (uint256[]): 1
Arg [9] : seriesMaxSupplies_ (uint256[]): 9048
Arg [10] : seriesNextPurchasableTokenIds_ (uint256[]): 31946296525744824328753280828797417080692251952513183340713878305007073182561
-----Encoded View---------------
24 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000160
Arg [1] : 00000000000000000000000000000000000000000000000000000000000001a0
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [4] : 000000000000000000000000beb9f810862c40a144925f568b1853d72acc492f
Arg [5] : 000000000000000000000000cbfaf4bde69c9b37835761e5228f9fe9e25b452f
Arg [6] : 000000000000000000000000080feb125ba730d6d12789b6aaab01f4e31d8bd1
Arg [7] : 00000000000000000000000000000000000000000000000000000000000001e0
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000240
Arg [9] : 0000000000000000000000000000000000000000000000000000000000000280
Arg [10] : 00000000000000000000000000000000000000000000000000000000000002c0
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000010
Arg [12] : 6372797374616c6c696e6520776f726b00000000000000000000000000000000
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000009
Arg [14] : 464552414c46494c450000000000000000000000000000000000000000000000
Arg [15] : 0000000000000000000000000000000000000000000000000000000000000035
Arg [16] : 697066733a2f2f516d5a75796762676556445a384e42427044336f5356554169
Arg [17] : 625454674b596e4b765957696b6447703748774e620000000000000000000000
Arg [18] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [19] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [20] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [21] : 0000000000000000000000000000000000000000000000000000000000002358
Arg [22] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [23] : 46a0f68ba657436492a032a88b65fbd9000000000000000000000000000f4361
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