ERC-721
NFT
Overview
Max Total Supply
615 GNAR
Holders
226
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
2 GNARLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
SkateContract
Compiler Version
v0.8.11+commit.d7f03943
Optimization Enabled:
No with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.6; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; import {ReentrancyGuardUpgradeable} from "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol"; import {IGnarSeeder} from "./GNARSeeder.sol"; import {IGnarDescriptor} from "./GNARDescriptor.sol"; /** * @title SkateContract */ contract SkateContract is ERC721Enumerable, Ownable, ReentrancyGuardUpgradeable { using Strings for uint256; struct Auction { // ID for the gnar (ERC721 token ID) uint256 gnarId; // The current highest bid amount uint256 amount; // The block number that the auction started uint256 startBlock; // The time that the auction is scheduled to end uint256 endBlock; // The address of the current highest bid address payable bidder; // Skate percentage uint8 skatePercent; // Dao percentage uint8 daoPercent; // Whether or not the auction has been settled bool settled; } event AuctionCreated(uint256 indexed gnarId); event AuctionBid( uint256 indexed gnarId, address sender, uint256 value, uint256 timestamp ); event AuctionSettled( uint256 indexed gnarId, address winner, uint256 amount, uint256 timestamp ); event MinBidIncrementPercentageUpdated(uint8 percent); event ReservePriceUpdated(uint256 price); // The number of blocks an auction lasts uint16 public auctionPeriodBlocks = 666; // The Gnar token URI descriptor address IGnarDescriptor public descriptor; // The Gnar token seeder IGnarSeeder public seeder; // The internal Skate ID tracker uint256 public currentGnarId; // current Auction info like gnarId, Auction public auction; // The minimum price accepted in an auction uint256 public reservePrice; // The minimum percentage difference between the last bid amount and the current bid uint8 public minBidIncrementPercentage; // The seeds mapping(uint256 => IGnarSeeder.Seed) public seeds; // paused bool public paused = true; // skate address address public skate; // dao address address public dao; constructor( address _skate, address _dao, address _descriptor, address _seeder, uint256 _reservePrice, uint8 _minBidIncrementPercentage ) ERC721("Skate or DAO", "GNAR") { require( _skate != address(0) && _dao != address(0) && _descriptor != address(0) && _seeder != address(0), "ZERO ADDRESS" ); skate = _skate; dao = _dao; descriptor = IGnarDescriptor(_descriptor); seeder = IGnarSeeder(_seeder); reservePrice = _reservePrice; minBidIncrementPercentage = _minBidIncrementPercentage; } /** * set skate and dao address */ function setSkateDaoAddresses(address _skate, address _dao) external onlyOwner { require(_skate != address(0) && _dao != address(0), "ZERO ADDRESS"); skate = _skate; dao = _dao; } /** * Auction start by onwer */ function auctionStart() external onlyOwner { require(paused, "Auction already started"); paused = false; _createAuction(); } /** * @notice Settle the current auction, mint a new Gnar, and put it up for auction. */ function settleCurrentAndCreateNewAuction() external nonReentrant { require(!paused, "Auction is paused"); _settleAuction(); _createAuction(); } /** * @notice Set the token URI descriptor. * @dev Only callable by the owner when not locked. */ function setDescriptor(address _descriptor) external onlyOwner { require(_descriptor != address(0), "ZERO ADDRESS"); descriptor = IGnarDescriptor(_descriptor); } /** * @notice Set the token seeder. * @dev Only callable by the owner when not locked. */ function setSeeder(address _seeder) external onlyOwner { require(_seeder != address(0), "ZERO ADDRESS"); seeder = IGnarSeeder(_seeder); } function mint() internal returns (uint256) { IGnarSeeder.Seed memory _seed = seeder.generateSeed( currentGnarId, descriptor ); uint256 tokenId = currentGnarId; _safeMint(msg.sender, tokenId); currentGnarId++; seeds[tokenId] = _seed; return tokenId; } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "Nonexistent token"); return descriptor.tokenURI(tokenId, seeds[tokenId]); } /** * @notice Create a bid for a Gnar, with a given amount. * @dev This contract only accepts payment in ETH. */ function createBid( uint256 gnarId, uint8 _skatePercent, uint8 _daoPercent ) external payable nonReentrant { Auction memory _auction = auction; require(_auction.gnarId == gnarId, "Gnar not up for auction"); require( _skatePercent + _daoPercent == 100, "Sum of percents is not 100" ); require(block.number < _auction.endBlock, "Auction expired"); require(msg.value >= reservePrice, "Must send at least reservePrice"); require( msg.value >= _auction.amount + ((_auction.amount * minBidIncrementPercentage) / 100), "Must send more than last bid by minBidIncrementPercentage amount" ); address payable lastBidder = _auction.bidder; // Refund the last bidder, if applicable if (lastBidder != address(0)) { require( _safeTransferETH(lastBidder, _auction.amount), "ETH transfer failed" ); } auction.amount = msg.value; auction.bidder = payable(msg.sender); auction.skatePercent = _skatePercent; auction.daoPercent = _daoPercent; emit AuctionBid( _auction.gnarId, msg.sender, msg.value, block.timestamp ); } /** * @notice Create an auction. * @dev Store the auction details in the `auction` state variable and emit an AuctionCreated event. * If the mint reverts, the minter was updated without pausing this contract first. To remedy this, * catch the revert and pause this contract. */ function _createAuction() internal { uint256 gnarId = mint(); uint256 startBlock = block.number; uint256 endBlock = startBlock + auctionPeriodBlocks; auction = Auction({ gnarId: gnarId, amount: 0, startBlock: startBlock, endBlock: endBlock, bidder: payable(0), skatePercent: 50, daoPercent: 50, settled: false }); emit AuctionCreated(gnarId); } /** * @notice Settle an auction, finalizing the bid and paying out to the owner. * @dev If there are no bids, the Gnar is burned. */ function _settleAuction() internal { Auction memory _auction = auction; require(_auction.startBlock != 0, "Auction hasn't begun"); require(!_auction.settled, "Auction has already been settled"); require(block.number >= _auction.endBlock, "Auction hasn't completed"); auction.settled = true; if (_auction.bidder == address(0)) { burn(_auction.gnarId); } else { transferFrom(owner(), _auction.bidder, _auction.gnarId); } if (_auction.amount > 0) { require( _safeTransferETH( skate, (_auction.amount * _auction.skatePercent) / 100 ), "ETH transfer failed" ); require( _safeTransferETH( dao, (_auction.amount * _auction.daoPercent) / 100 ), "ETH transfer failed" ); } emit AuctionSettled( _auction.gnarId, _auction.bidder, _auction.amount, block.timestamp ); } /** * @notice Pause the gnar auction house. * @dev This function can only be called by the owner when the * contract is unpaused. While no new auctions can be started when paused, * anyone can settle an ongoing auction. */ function pause() external onlyOwner { require(!paused, "Already Paused"); paused = true; } /** * @notice Unpause the Gnars auction house. * @dev This function can only be called by the owner when the * contract is paused. If required, this function will start a new auction. */ function unpause() external onlyOwner { require(paused, "Already Auction running"); paused = false; if (auction.endBlock < block.number) { if (auction.settled) { _createAuction(); } else { _settleAuction(); _createAuction(); } } } /** * @notice Set the auction reserve price. * @dev Only callable by the owner. */ function setReservePrice(uint256 _reservePrice) external onlyOwner { reservePrice = _reservePrice; emit ReservePriceUpdated(_reservePrice); } /** * @notice Set the auction minimum bid increment percentage. * @dev Only callable by the owner. */ function setMinBidIncrementPercentage(uint8 _minBidIncrementPercentage) external onlyOwner { minBidIncrementPercentage = _minBidIncrementPercentage; emit MinBidIncrementPercentageUpdated(_minBidIncrementPercentage); } /** * @notice Burn a gnar. */ function burn(uint256 gnarId) public onlyOwner { _burn(gnarId); } /** * @notice Transfer ETH. */ function _safeTransferETH(address to, uint256 amount) internal returns (bool) { (bool success, ) = to.call{value: amount, gas: 50_000}(new bytes(0)); return success; } function remainBlocks() external view returns (uint256) { require(auction.endBlock >= block.number, "No remain blocks!"); return auction.endBlock - block.number; } function setAuctionPeriodBlocks(uint16 _auctionPeriodBlocks) external onlyOwner { auctionPeriodBlocks = _auctionPeriodBlocks; } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.6; import {IGnarDescriptor} from "./IGNARDescriptor.sol"; interface IGnarSeeder { struct Seed { uint48 background; uint48 body; uint48 accessory; uint48 head; uint48 glasses; } function generateSeed(uint256 nounId, IGnarDescriptor descriptor) external view returns (Seed memory); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.6; import {IGnarSeeder} from "./IGNARSeeder.sol"; interface IGnarDescriptor { event PartsLocked(); event DataURIToggled(bool enabled); event BaseURIUpdated(string baseURI); function arePartsLocked() external returns (bool); function isDataURIEnabled() external returns (bool); function baseURI() external returns (string memory); function palettes(uint8 paletteIndex, uint256 colorIndex) external view returns (string memory); function backgrounds(uint256 index) external view returns (string memory); function bodies(uint256 index) external view returns (bytes memory); function accessories(uint256 index) external view returns (bytes memory); function heads(uint256 index) external view returns (bytes memory); function glasses(uint256 index) external view returns (bytes memory); function backgroundCount() external view returns (uint256); function bodyCount() external view returns (uint256); function accessoryCount() external view returns (uint256); function headCount() external view returns (uint256); function glassesCount() external view returns (uint256); function addManyColorsToPalette( uint8 paletteIndex, string[] calldata newColors ) external; function addManyBackgrounds(string[] calldata backgrounds) external; function addManyBodies(bytes[] calldata bodies) external; function addManyAccessories(bytes[] calldata accessories) external; function addManyHeads(bytes[] calldata heads) external; function addManyGlasses(bytes[] calldata glasses) external; function addColorToPalette(uint8 paletteIndex, string calldata color) external; function addBackground(string calldata background) external; function addBody(bytes calldata body) external; function addAccessory(bytes calldata accessory) external; function addHead(bytes calldata head) external; function addGlasses(bytes calldata glasses) external; function lockParts() external; function toggleDataURIEnabled() external; function setBaseURI(string calldata baseURI) external; function tokenURI(uint256 tokenId, IGnarSeeder.Seed memory seed) external view returns (string memory); function dataURI(uint256 tokenId, IGnarSeeder.Seed memory seed) external view returns (string memory); function genericDataURI( string calldata name, string calldata description, IGnarSeeder.Seed memory seed ) external view returns (string memory); function generateSVGImage(IGnarSeeder.Seed memory seed) external view returns (string memory); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.6; library MultiPartRLEToSVG { struct SVGParams { bytes[] parts; string background; } struct ContentBounds { uint8 top; uint8 right; uint8 bottom; uint8 left; } struct Rect { uint8 length; uint8 colorIndex; } struct DecodedImage { uint8 paletteIndex; ContentBounds bounds; Rect[] rects; } /** * @notice Given RLE image parts and color palettes, merge to generate a single SVG image. */ function generateSVG(SVGParams memory params, mapping(uint8 => string[]) storage palettes) internal view returns (string memory svg) { // prettier-ignore return string( abi.encodePacked( '<svg width="320" height="320" viewBox="0 0 320 320" xmlns="http://www.w3.org/2000/svg" shape-rendering="crispEdges">', '<rect width="100%" height="100%" fill="#', params.background, '" />', _generateSVGRects(params, palettes), '</svg>' ) ); } /** * @notice Given RLE image parts and color palettes, generate SVG rects. */ // prettier-ignore function _generateSVGRects(SVGParams memory params, mapping(uint8 => string[]) storage palettes) private view returns (string memory svg) { string[33] memory lookup = [ '0', '10', '20', '30', '40', '50', '60', '70', '80', '90', '100', '110', '120', '130', '140', '150', '160', '170', '180', '190', '200', '210', '220', '230', '240', '250', '260', '270', '280', '290', '300', '310', '320' ]; string memory rects; for (uint8 p = 0; p < params.parts.length; p++) { DecodedImage memory image = _decodeRLEImage(params.parts[p]); string[] storage palette = palettes[image.paletteIndex]; uint256 currentX = image.bounds.left; uint256 currentY = image.bounds.top; uint256 cursor; string[16] memory buffer; string memory part; for (uint256 i = 0; i < image.rects.length; i++) { Rect memory rect = image.rects[i]; if (rect.colorIndex != 0) { buffer[cursor] = lookup[rect.length]; // width buffer[cursor + 1] = lookup[currentX]; // x buffer[cursor + 2] = lookup[currentY]; // y buffer[cursor + 3] = palette[rect.colorIndex]; // color cursor += 4; if (cursor >= 16) { part = string(abi.encodePacked(part, _getChunk(cursor, buffer))); cursor = 0; } } currentX += rect.length; if (currentX == image.bounds.right) { currentX = image.bounds.left; currentY++; } } if (cursor != 0) { part = string(abi.encodePacked(part, _getChunk(cursor, buffer))); } rects = string(abi.encodePacked(rects, part)); } return rects; } /** * @notice Return a string that consists of all rects in the provided `buffer`. */ // prettier-ignore function _getChunk(uint256 cursor, string[16] memory buffer) private pure returns (string memory) { string memory chunk; for (uint256 i = 0; i < cursor; i += 4) { chunk = string( abi.encodePacked( chunk, '<rect width="', buffer[i], '" height="10" x="', buffer[i + 1], '" y="', buffer[i + 2], '" fill="#', buffer[i + 3], '" />' ) ); } return chunk; } /** * @notice Decode a single RLE compressed image into a `DecodedImage`. */ function _decodeRLEImage(bytes memory image) private pure returns (DecodedImage memory) { uint8 paletteIndex = uint8(image[0]); ContentBounds memory bounds = ContentBounds({ top: uint8(image[1]), right: uint8(image[2]), bottom: uint8(image[3]), left: uint8(image[4]) }); uint256 cursor; Rect[] memory rects = new Rect[]((image.length - 5) / 2); for (uint256 i = 5; i < image.length; i += 2) { rects[cursor] = Rect({ length: uint8(image[i]), colorIndex: uint8(image[i + 1]) }); cursor++; } return DecodedImage({ paletteIndex: paletteIndex, bounds: bounds, rects: rects }); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.6; import {IGnarSeeder} from "../interfaces/IGNARSeeder.sol"; import {IGnarDescriptor} from "../interfaces/IGNARDescriptor.sol"; contract GNARSeeder is IGnarSeeder { function generateSeed(uint256 gnarId, IGnarDescriptor descriptor) external view override returns (Seed memory) { uint256 pseudorandomness = uint256( keccak256(abi.encodePacked(blockhash(block.number - 1), gnarId)) ); uint256 backgroundCount = descriptor.backgroundCount(); uint256 bodyCount = descriptor.bodyCount(); uint256 accessoryCount = descriptor.accessoryCount(); uint256 headCount = descriptor.headCount(); uint256 glassesCount = descriptor.glassesCount(); require(backgroundCount > 0, "background is missing"); require(bodyCount > 0, "body is missing"); require(accessoryCount > 0, "accessories is missing"); require(headCount > 0, "head is missing"); require(glassesCount > 0, "glasses is missing"); return Seed({ background: uint48(uint48(pseudorandomness) % backgroundCount), body: uint48(uint48(pseudorandomness >> 48) % bodyCount), accessory: uint48( uint48(pseudorandomness >> 96) % accessoryCount ), head: uint48(uint48(pseudorandomness >> 144) % headCount), glasses: uint48(uint48(pseudorandomness >> 192) % glassesCount) }); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.6; import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol"; import {Base64} from "base64-sol/base64.sol"; import {Strings} from "@openzeppelin/contracts/utils/Strings.sol"; import {IGnarDescriptor} from "../interfaces/IGNARDescriptor.sol"; import {IGnarSeeder} from "../interfaces/IGNARSeeder.sol"; import {MultiPartRLEToSVG} from "./libs/MultiPartRLEToSVG.sol"; contract GNARDescriptor is IGnarDescriptor, Ownable { using Strings for uint256; // Whether or not new Gnar parts can be added bool public override arePartsLocked; // Whether or not `tokenURI` should be returned as a data URI (Default: true) bool public override isDataURIEnabled = true; // Base URI string public override baseURI; // Gnar Color Palettes (Index => Hex Colors) mapping(uint8 => string[]) public override palettes; // Gnar Backgrounds (Hex Colors) string[] public override backgrounds; // Gnar Bodies (Custom RLE) bytes[] public override bodies; // Gnar Accessories (Custom RLE) bytes[] public override accessories; // Gnar Heads (Custom RLE) bytes[] public override heads; // Gnar Glasses (Custom RLE) bytes[] public override glasses; /** * @notice Require that the parts have not been locked. */ modifier whenPartsNotLocked() { require(!arePartsLocked, "Parts are locked"); _; } /** * @notice Get the number of available Gnar `backgrounds`. */ function backgroundCount() external view override returns (uint256) { return backgrounds.length; } /** * @notice Get the number of available Gnar `bodies`. */ function bodyCount() external view override returns (uint256) { return bodies.length; } /** * @notice Get the number of available Gnar `accessories`. */ function accessoryCount() external view override returns (uint256) { return accessories.length; } /** * @notice Get the number of available Gnar `heads`. */ function headCount() external view override returns (uint256) { return heads.length; } /** * @notice Get the number of available Gnar `glasses`. */ function glassesCount() external view override returns (uint256) { return glasses.length; } /** * @notice Add colors to a color palette. * @dev This function can only be called by the owner. */ function addManyColorsToPalette( uint8 paletteIndex, string[] calldata newColors ) external override onlyOwner { require( palettes[paletteIndex].length + newColors.length <= 256, "Palettes can only hold 256 colors" ); for (uint256 i = 0; i < newColors.length; i++) { _addColorToPalette(paletteIndex, newColors[i]); } } /** * @notice Batch add Gnar backgrounds. * @dev This function can only be called by the owner when not locked. */ function addManyBackgrounds(string[] calldata _backgrounds) external override onlyOwner whenPartsNotLocked { for (uint256 i = 0; i < _backgrounds.length; i++) { _addBackground(_backgrounds[i]); } } /** * @notice Batch add Gnar bodies. * @dev This function can only be called by the owner when not locked. */ function addManyBodies(bytes[] calldata _bodies) external override onlyOwner whenPartsNotLocked { for (uint256 i = 0; i < _bodies.length; i++) { _addBody(_bodies[i]); } } /** * @notice Batch add Gnar accessories. * @dev This function can only be called by the owner when not locked. */ function addManyAccessories(bytes[] calldata _accessories) external override onlyOwner whenPartsNotLocked { for (uint256 i = 0; i < _accessories.length; i++) { _addAccessory(_accessories[i]); } } /** * @notice Batch add Gnar heads. * @dev This function can only be called by the owner when not locked. */ function addManyHeads(bytes[] calldata _heads) external override onlyOwner whenPartsNotLocked { for (uint256 i = 0; i < _heads.length; i++) { _addHead(_heads[i]); } } /** * @notice Batch add Gnar glasses. * @dev This function can only be called by the owner when not locked. */ function addManyGlasses(bytes[] calldata _glasses) external override onlyOwner whenPartsNotLocked { for (uint256 i = 0; i < _glasses.length; i++) { _addGlasses(_glasses[i]); } } /** * @notice Add a single color to a color palette. * @dev This function can only be called by the owner. */ function addColorToPalette(uint8 _paletteIndex, string calldata _color) external override onlyOwner { require( palettes[_paletteIndex].length <= 255, "Palettes can only hold 256 colors" ); _addColorToPalette(_paletteIndex, _color); } /** * @notice Add a Gnar background. * @dev This function can only be called by the owner when not locked. */ function addBackground(string calldata _background) external override onlyOwner whenPartsNotLocked { _addBackground(_background); } /** * @notice Add a Gnar body. * @dev This function can only be called by the owner when not locked. */ function addBody(bytes calldata _body) external override onlyOwner whenPartsNotLocked { _addBody(_body); } /** * @notice Add a Gnar accessory. * @dev This function can only be called by the owner when not locked. */ function addAccessory(bytes calldata _accessory) external override onlyOwner whenPartsNotLocked { _addAccessory(_accessory); } /** * @notice Add a Gnar head. * @dev This function can only be called by the owner when not locked. */ function addHead(bytes calldata _head) external override onlyOwner whenPartsNotLocked { _addHead(_head); } /** * @notice Add Gnar glasses. * @dev This function can only be called by the owner when not locked. */ function addGlasses(bytes calldata _glasses) external override onlyOwner whenPartsNotLocked { _addGlasses(_glasses); } /** * @notice Lock all Gnar parts. * @dev This cannot be reversed and can only be called by the owner when not locked. */ function lockParts() external override onlyOwner whenPartsNotLocked { arePartsLocked = true; emit PartsLocked(); } /** * @notice Toggle a boolean value which determines if `tokenURI` returns a data URI * or an HTTP URL. * @dev This can only be called by the owner. */ function toggleDataURIEnabled() external override onlyOwner { bool enabled = !isDataURIEnabled; isDataURIEnabled = enabled; emit DataURIToggled(enabled); } /** * @notice Set the base URI for all token IDs. It is automatically * added as a prefix to the value returned in {tokenURI}, or to the * token ID if {tokenURI} is empty. * @dev This can only be called by the owner. */ function setBaseURI(string calldata _baseURI) external override onlyOwner { baseURI = _baseURI; emit BaseURIUpdated(_baseURI); } /** * @notice Given a token ID and seed, construct a token URI for an official Gnars DAO Gnar. * @dev The returned value may be a base64 encoded data URI or an API URL. */ function tokenURI(uint256 tokenId, IGnarSeeder.Seed memory seed) external view override returns (string memory) { if (isDataURIEnabled) { return dataURI(tokenId, seed); } return string(abi.encodePacked(baseURI, tokenId.toString())); } /** * @notice Given a token ID and seed, construct a base64 encoded data URI for an official Gnars DAO Gnar. */ function dataURI(uint256 tokenId, IGnarSeeder.Seed memory seed) public view override returns (string memory) { string memory gnarId = tokenId.toString(); string memory name = string(abi.encodePacked("Gnar ", gnarId)); string memory description = string( abi.encodePacked("Gnar ", gnarId, " both skater and terrain") ); return genericDataURI(name, description, seed); } /** * @notice Given a name, description, and seed, construct a base64 encoded data URI. */ function genericDataURI( string memory name, string memory description, IGnarSeeder.Seed memory seed ) public view override returns (string memory) { string memory image = _generateSVGImage( MultiPartRLEToSVG.SVGParams({ parts: _getPartsForSeed(seed), background: backgrounds[seed.background] }) ); // prettier-ignore return string( abi.encodePacked( 'data:application/json;base64,', Base64.encode( bytes( abi.encodePacked('{"name":"', name, '", "description":"', description, '", "image": "', 'data:image/svg+xml;base64,', image, '"}') ) ) ) ); } /** * @notice Given a seed, construct a base64 encoded SVG image. */ function generateSVGImage(IGnarSeeder.Seed memory seed) external view override returns (string memory) { MultiPartRLEToSVG.SVGParams memory params = MultiPartRLEToSVG .SVGParams({ parts: _getPartsForSeed(seed), background: backgrounds[seed.background] }); return _generateSVGImage(params); } /** * @notice Generate an SVG image for use in the ERC721 token URI. */ function _generateSVGImage(MultiPartRLEToSVG.SVGParams memory params) public view returns (string memory svg) { return Base64.encode( bytes(MultiPartRLEToSVG.generateSVG(params, palettes)) ); } /** * @notice Add a single color to a color palette. */ function _addColorToPalette(uint8 _paletteIndex, string calldata _color) internal { palettes[_paletteIndex].push(_color); } /** * @notice Add a Gnar background. */ function _addBackground(string calldata _background) internal { backgrounds.push(_background); } /** * @notice Add a Gnar body. */ function _addBody(bytes calldata _body) internal { bodies.push(_body); } /** * @notice Add a Gnar accessory. */ function _addAccessory(bytes calldata _accessory) internal { accessories.push(_accessory); } /** * @notice Add a Gnar head. */ function _addHead(bytes calldata _head) internal { heads.push(_head); } /** * @notice Add Gnar glasses. */ function _addGlasses(bytes calldata _glasses) internal { glasses.push(_glasses); } /** * @notice Get all Gnar parts for the passed `seed`. */ function _getPartsForSeed(IGnarSeeder.Seed memory seed) internal view returns (bytes[] memory) { bytes[] memory _parts = new bytes[](4); _parts[0] = bodies[seed.body]; _parts[1] = accessories[seed.accessory]; _parts[2] = heads[seed.head]; _parts[3] = glasses[seed.glasses]; return _parts; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0; /// @title Base64 /// @author Brecht Devos - <[email protected]> /// @notice Provides functions for encoding/decoding base64 library Base64 { string internal constant TABLE_ENCODE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; bytes internal constant TABLE_DECODE = hex"0000000000000000000000000000000000000000000000000000000000000000" hex"00000000000000000000003e0000003f3435363738393a3b3c3d000000000000" hex"00000102030405060708090a0b0c0d0e0f101112131415161718190000000000" hex"001a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132330000000000"; function encode(bytes memory data) internal pure returns (string memory) { if (data.length == 0) return ''; // load the table into memory string memory table = TABLE_ENCODE; // multiply by 4/3 rounded up uint256 encodedLen = 4 * ((data.length + 2) / 3); // add some extra buffer at the end required for the writing string memory result = new string(encodedLen + 32); assembly { // set the actual output length mstore(result, encodedLen) // prepare the lookup table let tablePtr := add(table, 1) // input ptr let dataPtr := data let endPtr := add(dataPtr, mload(data)) // result ptr, jump over length let resultPtr := add(result, 32) // run over the input, 3 bytes at a time for {} lt(dataPtr, endPtr) {} { // read 3 bytes dataPtr := add(dataPtr, 3) let input := mload(dataPtr) // write 4 characters mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F)))) resultPtr := add(resultPtr, 1) mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F)))) resultPtr := add(resultPtr, 1) mstore8(resultPtr, mload(add(tablePtr, and(shr( 6, input), 0x3F)))) resultPtr := add(resultPtr, 1) mstore8(resultPtr, mload(add(tablePtr, and( input, 0x3F)))) resultPtr := add(resultPtr, 1) } // padding with '=' switch mod(mload(data), 3) case 1 { mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) } case 2 { mstore(sub(resultPtr, 1), shl(248, 0x3d)) } } return result; } function decode(string memory _data) internal pure returns (bytes memory) { bytes memory data = bytes(_data); if (data.length == 0) return new bytes(0); require(data.length % 4 == 0, "invalid base64 decoder input"); // load the table into memory bytes memory table = TABLE_DECODE; // every 4 characters represent 3 bytes uint256 decodedLen = (data.length / 4) * 3; // add some extra buffer at the end required for the writing bytes memory result = new bytes(decodedLen + 32); assembly { // padding with '=' let lastBytes := mload(add(data, mload(data))) if eq(and(lastBytes, 0xFF), 0x3d) { decodedLen := sub(decodedLen, 1) if eq(and(lastBytes, 0xFFFF), 0x3d3d) { decodedLen := sub(decodedLen, 1) } } // set the actual output length mstore(result, decodedLen) // prepare the lookup table let tablePtr := add(table, 1) // input ptr let dataPtr := data let endPtr := add(dataPtr, mload(data)) // result ptr, jump over length let resultPtr := add(result, 32) // run over the input, 4 characters at a time for {} lt(dataPtr, endPtr) {} { // read 4 characters dataPtr := add(dataPtr, 4) let input := mload(dataPtr) // write 3 bytes let output := add( add( shl(18, and(mload(add(tablePtr, and(shr(24, input), 0xFF))), 0xFF)), shl(12, and(mload(add(tablePtr, and(shr(16, input), 0xFF))), 0xFF))), add( shl( 6, and(mload(add(tablePtr, and(shr( 8, input), 0xFF))), 0xFF)), and(mload(add(tablePtr, and( input , 0xFF))), 0xFF) ) ) mstore(resultPtr, shl(232, output)) resultPtr := add(resultPtr, 3) } } return result; } }
// 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 v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts 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 v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /** * @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 * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev 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) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (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 v4.4.1 (token/ERC721/extensions/IERC721Enumerable.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol) pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ 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 } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the 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 = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface 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 `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/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`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @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 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); /** * @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; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (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: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden 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 owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @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 of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {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 a {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try 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 { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (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 Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuardUpgradeable is Initializable { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; function __ReentrancyGuard_init() internal onlyInitializing { __ReentrancyGuard_init_unchained(); } function __ReentrancyGuard_init_unchained() internal onlyInitializing { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } uint256[49] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/utils/Initializable.sol) pragma solidity ^0.8.0; import "../../utils/AddressUpgradeable.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To initialize the implementation contract, you can either invoke the * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() initializer {} * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Modifier to protect an initializer function from being invoked twice. */ modifier initializer() { // If the contract is initializing we ignore whether _initialized is set in order to support multiple // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the // contract may have been reentered. require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} modifier, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } function _isConstructor() private view returns (bool) { return !AddressUpgradeable.isContract(address(this)); } }
{ "remappings": [], "optimizer": { "enabled": false, "runs": 200 }, "evmVersion": "london", "libraries": {}, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"_skate","type":"address"},{"internalType":"address","name":"_dao","type":"address"},{"internalType":"address","name":"_descriptor","type":"address"},{"internalType":"address","name":"_seeder","type":"address"},{"internalType":"uint256","name":"_reservePrice","type":"uint256"},{"internalType":"uint8","name":"_minBidIncrementPercentage","type":"uint8"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"gnarId","type":"uint256"},{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"AuctionBid","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"gnarId","type":"uint256"}],"name":"AuctionCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"gnarId","type":"uint256"},{"indexed":false,"internalType":"address","name":"winner","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"AuctionSettled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"percent","type":"uint8"}],"name":"MinBidIncrementPercentageUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"price","type":"uint256"}],"name":"ReservePriceUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"auction","outputs":[{"internalType":"uint256","name":"gnarId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"startBlock","type":"uint256"},{"internalType":"uint256","name":"endBlock","type":"uint256"},{"internalType":"address payable","name":"bidder","type":"address"},{"internalType":"uint8","name":"skatePercent","type":"uint8"},{"internalType":"uint8","name":"daoPercent","type":"uint8"},{"internalType":"bool","name":"settled","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"auctionPeriodBlocks","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"auctionStart","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"gnarId","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"gnarId","type":"uint256"},{"internalType":"uint8","name":"_skatePercent","type":"uint8"},{"internalType":"uint8","name":"_daoPercent","type":"uint8"}],"name":"createBid","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"currentGnarId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"dao","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"descriptor","outputs":[{"internalType":"contract IGnarDescriptor","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"minBidIncrementPercentage","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"remainBlocks","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"reservePrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"seeder","outputs":[{"internalType":"contract IGnarSeeder","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"seeds","outputs":[{"internalType":"uint48","name":"background","type":"uint48"},{"internalType":"uint48","name":"body","type":"uint48"},{"internalType":"uint48","name":"accessory","type":"uint48"},{"internalType":"uint48","name":"head","type":"uint48"},{"internalType":"uint48","name":"glasses","type":"uint48"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_auctionPeriodBlocks","type":"uint16"}],"name":"setAuctionPeriodBlocks","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_descriptor","type":"address"}],"name":"setDescriptor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint8","name":"_minBidIncrementPercentage","type":"uint8"}],"name":"setMinBidIncrementPercentage","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_reservePrice","type":"uint256"}],"name":"setReservePrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_seeder","type":"address"}],"name":"setSeeder","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_skate","type":"address"},{"internalType":"address","name":"_dao","type":"address"}],"name":"setSkateDaoAddresses","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"settleCurrentAndCreateNewAuction","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"skate","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
00000000000000000000000073222225044ce0fc672ff9b6f9730d0a0421382c0000000000000000000000001f873636cb05a52b9efd2625dbf9383e26b2e4e9000000000000000000000000356ed178c62a251136d883f01e1b84cf6980aea80000000000000000000000003c7901a03f9c37af91f308b8f9af92fbc55f61a5000000000000000000000000000000000000000000000000002386f26fc100000000000000000000000000000000000000000000000000000000000000000005
-----Decoded View---------------
Arg [0] : _skate (address): 0x73222225044cE0FC672Ff9b6F9730D0a0421382C
Arg [1] : _dao (address): 0x1F873636cb05A52b9EFd2625DBf9383E26b2e4E9
Arg [2] : _descriptor (address): 0x356ED178c62a251136D883f01e1B84CF6980AEa8
Arg [3] : _seeder (address): 0x3c7901a03F9c37Af91F308B8f9AF92fBc55F61a5
Arg [4] : _reservePrice (uint256): 10000000000000000
Arg [5] : _minBidIncrementPercentage (uint8): 5
-----Encoded View---------------
6 Constructor Arguments found :
Arg [0] : 00000000000000000000000073222225044ce0fc672ff9b6f9730d0a0421382c
Arg [1] : 0000000000000000000000001f873636cb05a52b9efd2625dbf9383e26b2e4e9
Arg [2] : 000000000000000000000000356ed178c62a251136d883f01e1b84cf6980aea8
Arg [3] : 0000000000000000000000003c7901a03f9c37af91f308b8f9af92fbc55f61a5
Arg [4] : 000000000000000000000000000000000000000000000000002386f26fc10000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000005
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