NFT
Overview
TokenID
5569
Total Transfers
-
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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This contract contains unverified libraries: RightwayMetadata, RightwayDecoder
This contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.
Contract Name:
RightwayToken
Compiler Version
v0.8.3+commit.8d00100c
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/utils/Strings.sol'; import '@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol'; import '@openzeppelin/contracts/access/AccessControl.sol'; import '../sales/Saleable.sol'; import './RightwayDecoder.sol'; import './RightwayMetadata.sol'; contract RightwayToken is ERC721Enumerable, Saleable, AccessControl { bytes32 public constant INFRA_ROLE = keccak256('INFRA_ROLE'); bytes32 public constant REDEEM_ROLE = keccak256('REDEEM_ROLE'); bytes32 public constant CONTENT_ROLE = keccak256('CONTENT_ROLE'); event TokenRedeemed(uint256 indexed tokenId); event TokenContentAdded(uint256 indexed tokenId); constructor( string memory name, string memory symbol, string memory newCreator ) ERC721(name, symbol) { creator = newCreator; dropSealed = false; contentApi = 'https://tbd.io/content'; metadataApi = string(abi.encodePacked('https://tbd.io/metadata/', addressToString(address(this)), '/')); _setupRole(DEFAULT_ADMIN_ROLE, msg.sender); } string public creator; address payable public royaltyAddress; uint256 public royaltyBps; /* * drop information */ RightwayDecoder.Drop internal drop; bool public dropSealed; mapping(uint256 => RightwayMetadata.TokenState) internal stateByToken; /* * hosting information */ string internal contentApi; string internal metadataApi; modifier unsealed() { require(!dropSealed, 'drop is sealed'); _; } modifier issealed() { require(dropSealed, 'drop is not sealed'); _; } function setDropRoyalties( address payable newRoyaltyAddress, uint256 newRoyaltyBps ) public onlyRole(DEFAULT_ADMIN_ROLE) { royaltyAddress = newRoyaltyAddress; royaltyBps = newRoyaltyBps; } function setApis( string calldata newContentApi, string calldata newMetadataApi ) public onlyRole(INFRA_ROLE) { contentApi = newContentApi; metadataApi = string(abi.encodePacked(newMetadataApi, '/', addressToString(address(this)), '/')); } function addDropContentLibraries( RightwayDecoder.DropContentLibrary[] memory contentLibraries ) public onlyRole(DEFAULT_ADMIN_ROLE) unsealed { for (uint idx = 0; idx < contentLibraries.length; idx++) { drop.contentLibraries.push(contentLibraries[idx]); } } function addDropContent( bytes32[] calldata content, uint offset ) public onlyRole(DEFAULT_ADMIN_ROLE) unsealed { uint idx = 0; while(idx < content.length) { drop.content[offset + idx] = content[idx]; idx++; } } function addDropStringData( bytes32[] calldata stringData, uint offset) public onlyRole(DEFAULT_ADMIN_ROLE) unsealed { uint idx = 0; while(idx < stringData.length) { drop.stringData[offset + idx] = stringData[idx]; idx++; } } function addDropSentences( bytes32[] calldata sentences, uint offset) public onlyRole(DEFAULT_ADMIN_ROLE) unsealed { uint idx = 0; while(idx < sentences.length) { drop.sentences[offset + idx] = sentences[idx]; idx++; } } function addDropAttributes( bytes32[] calldata attributes, uint offset) public onlyRole(DEFAULT_ADMIN_ROLE) unsealed { uint idx = 0; while(idx < attributes.length) { drop.attributes[offset + idx] = attributes[idx]; idx++; } } function addDropTemplates( bytes32[] calldata templates, uint offset) public onlyRole(DEFAULT_ADMIN_ROLE) unsealed { uint idx = 0; while(idx < templates.length) { drop.templates[offset + idx] = templates[idx]; idx++; } } function addDropEditions( bytes32[] calldata editions, uint offset) public onlyRole(DEFAULT_ADMIN_ROLE) unsealed { uint idx = 0; while(idx < editions.length) { drop.editions[offset + idx] = editions[idx]; idx++; } } function addDropTokens( bytes32[] calldata tokens, uint offset, uint length) public onlyRole(DEFAULT_ADMIN_ROLE) unsealed { uint idx = 0; while(idx < tokens.length) { drop.tokens[offset + idx] = tokens[idx]; idx++; } drop.numTokens = length; } function sealDrop() public onlyRole(DEFAULT_ADMIN_ROLE) unsealed { dropSealed = true; } function addTokenContent( uint256[] calldata tokens, string calldata slug, string calldata contentLibraryArweaveHash, uint16 contentIndex, string calldata contentType) public onlyRole(CONTENT_ROLE) issealed { for (uint idx = 0; idx < tokens.length; idx++) { require(_exists(tokens[idx]), 'No such token'); stateByToken[tokens[idx]].additionalContent.push(); uint cidx = stateByToken[tokens[idx]].additionalContent.length - 1; stateByToken[tokens[idx]].additionalContent[cidx].contentLibraryArweaveHash = contentLibraryArweaveHash; stateByToken[tokens[idx]].additionalContent[cidx].contentIndex = contentIndex; stateByToken[tokens[idx]].additionalContent[cidx].contentType = contentType; stateByToken[tokens[idx]].additionalContent[cidx].slug = slug; emit TokenContentAdded(tokens[idx]); } } function mint(address to, uint256 tokenId, uint16 attributesStart, uint16 attributesLength) public onlyRole(DEFAULT_ADMIN_ROLE) issealed { require(drop.numTokens > tokenId, 'No such token'); _safeMint(to, tokenId); RightwayMetadata.TokenState storage state = stateByToken[tokenId]; state.attributesStart = attributesStart; state.attributesLength = attributesLength; } function mintBatch(address to, uint256[] calldata tokenIds, uint16 attributesStart, uint16 attributesLength) public onlyRole(DEFAULT_ADMIN_ROLE) issealed { for (uint idx = 0; idx < tokenIds.length; idx++) { mint(to, tokenIds[idx], attributesStart, attributesLength); } } function redeem(uint256 tokenId, uint64 timestamp, string memory memo) public onlyRole(REDEEM_ROLE) issealed { require(_exists(tokenId), 'No such token'); RightwayMetadata.TokenState storage state = stateByToken[tokenId]; state.redemptions.push(); uint redemptionIdx = state.redemptions.length - 1; RightwayMetadata.TokenRedemption storage record = state.redemptions[redemptionIdx]; record.timestamp = timestamp; record.memo = memo; emit TokenRedeemed(tokenId); } function addressToString(address addr) internal pure returns(string memory) { bytes32 value = bytes32(uint256(uint160(addr))); bytes memory alphabet = '0123456789abcdef'; bytes memory str = new bytes(42); str[0] = '0'; str[1] = 'x'; for (uint256 i = 0; i < 20; i++) { str[2+i*2] = alphabet[uint8(value[i + 12] >> 4)]; str[3+i*2] = alphabet[uint8(value[i + 12] & 0x0f)]; } return string(str); } function getMetadata(uint256 tokenId) public view returns (RightwayMetadata.TokenMetadata memory) { RightwayMetadata.TokenState memory state; bool isMinted = false; if (_exists(tokenId)) { state = stateByToken[tokenId]; isMinted = true; } return RightwayMetadata.getMetadata(creator, drop, contentApi, tokenId, state, isMinted); } /** * @dev Base URI for computing {tokenURI}. Empty by default, can be overriden * in child contracts. */ function _baseURI() internal view virtual override returns (string memory) { return metadataApi; } /** * @dev Saleable interface */ function _processSaleOffering(uint256 offeringId, address buyer, uint256 price) internal override issealed { require(drop.numTokens > offeringId, 'No such token'); _safeMint(buyer, offeringId); RightwayMetadata.TokenState storage state = stateByToken[offeringId]; // solhint-disable-next-line not-rely-on-time state.soldOn = uint64(block.timestamp); state.buyer = buyer; state.price = price; } function registerSeller(address seller) public onlyRole(DEFAULT_ADMIN_ROLE) { _registerSeller(seller); } function deregisterSeller(address seller) public onlyRole(DEFAULT_ADMIN_ROLE) { _deregisterSeller(seller); } bytes4 private constant _INTERFACE_ID_FEES = 0xb7799584; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override (AccessControl, ERC721Enumerable) returns (bool) { return interfaceId == _INTERFACE_ID_FEES || AccessControl.supportsInterface(interfaceId) || ERC721Enumerable.supportsInterface(interfaceId); } function getFeeRecipients(uint256) public view returns (address payable[] memory) { address payable[] memory result = new address payable[](1); result[0] = royaltyAddress; return result; } function getFeeBps(uint256) public view returns (uint256[] memory) { uint256[] memory result = new uint256[](1); result[0] = royaltyBps; return result; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '../utils/BinaryDecoder.sol'; import '../utils/PackedVarArray.sol'; library RightwayDecoder { struct DropContentLibrary { uint256 arweaveHash; } /* * content types: * 0 - image * 1 - vector * 2 - video * 3 - audio */ struct DropContent { uint8 contentLibrary; uint8 contentType; uint16 contentIndex; } // encoded as uint16 keyref, uint8 array (0/1), uint16 value-ref // arrays will have multiple entries struct DropAttribute { uint16 key; // from drop.stringData bool isArray; uint16 value; // from drop.stringData } struct DropTemplate { uint16 name; // from drop.sentences joined with ' ' uint16 description; // from drop.sentences joined with ' ' uint8 redemptions; uint64 redemptionExpiration; uint16 attributesStart; // from drop.attributes uint16 attributesLength; // from drop.attributes uint16 contentStart; // from drop.content uint16 contentLength; // from drop.content } struct DropEdition { uint16 template; uint16 size; uint16 attributesStart; // from drop.attributes uint16 attributesLength; // from drop.attributes uint16 contentStart; // from drop.content uint16 contentLength; // from drop.content } struct DropToken { uint16 edition; uint16 serial; } struct Drop { DropContentLibrary[] contentLibraries; // max of 256 content libraries bytes32[0xFFFF] content; bytes32[0xFFFF] stringData; // max of 64k strings bytes32[0xFFFF] sentences; // max of 64k strings bytes32[0xFFFF] attributes; bytes32[0xFFFF] templates; bytes32[0xFFFF] editions; bytes32[0xFFFF] tokens; uint numTokens; } function getBufferIndexAndOffset(uint index, uint stride) internal pure returns (uint, uint) { uint offset = index * stride; return (offset / 32, offset % 32); } function decodeDropAttribute(Drop storage drop, uint16 idx) public view returns ( DropAttribute memory ) { (uint bufferIndex, uint offset) = getBufferIndexAndOffset(idx, 6); DropAttribute memory result; uint8 isArray = 0; (result.key, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.attributes, bufferIndex, offset); (result.value, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.attributes, bufferIndex, offset); (isArray,,) = BinaryDecoder.decodeUint8(drop.attributes, bufferIndex, offset); result.isArray = isArray != 0; return result; } function decodeDropString(Drop storage drop, uint16 idx) public view returns ( string memory ) { return PackedVarArray.getString(drop.stringData, idx); } function copyBytesUsafe( bytes memory from, bytes memory to, uint offset) internal pure returns (uint){ for (uint idx = 0; idx < from.length; idx++) { to[offset + idx] = from[idx]; } return offset + from.length; } function decodeDropSentence(Drop storage drop, uint16 index ) public view returns (string memory) { uint16[] memory words = PackedVarArray.getUint16Array(drop.sentences, index); uint strLen = words.length - 1; // initialized to the number of spaces string[] memory strings = new string[](words.length); for (uint idx = 0; idx < words.length; idx++) { strings[idx] = PackedVarArray.getString(drop.stringData, words[idx]); strLen += bytes(strings[idx]).length; } bytes memory strRaw = new bytes(strLen); uint offset = 0; for (uint idx = 0; idx < words.length - 1; idx++) { offset = copyBytesUsafe(bytes(strings[idx]), strRaw, offset); strRaw[offset++] = 0x20; // ascii/utf8 space } copyBytesUsafe(bytes(strings[words.length - 1]), strRaw, offset); return string(strRaw); } function decodeDropEdition(Drop storage drop, uint16 idx) public view returns(DropEdition memory) { (uint bufferIndex, uint offset) = getBufferIndexAndOffset(idx, 12); DropEdition memory result; (result.template, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.editions, bufferIndex, offset); (result.size, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.editions, bufferIndex, offset); (result.attributesStart, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.editions, bufferIndex, offset); (result.attributesLength, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.editions, bufferIndex, offset); (result.contentStart, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.editions, bufferIndex, offset); (result.contentLength, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.editions, bufferIndex, offset); return result; } function decodeDropTemplate(Drop storage drop, uint16 idx) public view returns(DropTemplate memory) { (uint bufferIndex, uint offset) = getBufferIndexAndOffset(idx, 32); DropTemplate memory result; (result.name, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.templates, bufferIndex, offset); (result.description, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.templates, bufferIndex, offset); (result.redemptions, bufferIndex, offset) = BinaryDecoder.decodeUint8(drop.templates, bufferIndex, offset); (result.redemptionExpiration, bufferIndex, offset) = BinaryDecoder.decodeUint64Aligned(drop.templates, bufferIndex, offset); (result.attributesStart, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.templates, bufferIndex, offset); (result.attributesLength, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.templates, bufferIndex, offset); (result.contentStart, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.templates, bufferIndex, offset); (result.contentLength, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.templates, bufferIndex, offset); return result; } function decodeDropToken(Drop storage drop, uint16 idx) public view returns(DropToken memory) { (uint bufferIndex, uint offset) = getBufferIndexAndOffset(idx, 4); DropToken memory result; (result.edition, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.tokens, bufferIndex, offset); (result.serial, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.tokens, bufferIndex, offset); return result; } function decodeDropContent(Drop storage drop, uint16 idx) public view returns(DropContent memory) { DropContent memory result; (uint bufferIndex, uint offset) = getBufferIndexAndOffset(idx, 4); (result.contentLibrary, bufferIndex, offset) = BinaryDecoder.decodeUint8(drop.content, bufferIndex, offset); (result.contentType, bufferIndex, offset) = BinaryDecoder.decodeUint8(drop.content, bufferIndex, offset); (result.contentIndex, bufferIndex, offset) = BinaryDecoder.decodeUint16Aligned(drop.content, bufferIndex, offset); return result; } function getDropContentLibrary(Drop storage drop, uint16 idx) public view returns(DropContentLibrary storage) { return drop.contentLibraries[idx]; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/utils/Strings.sol'; import '../utils/Base64.sol'; import './RightwayDecoder.sol'; library RightwayMetadata { /* * token state information */ struct TokenRedemption { uint64 timestamp; string memo; } struct AdditionalContent { string contentLibraryArweaveHash; uint16 contentIndex; string contentType; string slug; } struct TokenState { uint64 soldOn; uint256 price; address buyer; TokenRedemption[] redemptions; AdditionalContent[] additionalContent; uint16 attributesStart; uint16 attributesLength; } struct MetadataAttribute { bool isArray; string key; string[] values; } struct MetadataContent { string uri; string contentLibraryArweaveHash; uint16 contentIndex; string contentType; } struct MetadataAdditionalContent { string slug; string uri; string contentLibraryArweaveHash; uint16 contentIndex; string contentType; } struct TokenMetadata { string name; string description; MetadataAttribute[] attributes; uint256 editionSize; uint256 editionNumber; uint256 totalRedemptions; uint64 redemptionExpiration; MetadataContent[] content; TokenRedemption[] redemptions; uint64 soldOn; address buyer; uint256 price; bool isMinted; MetadataAdditionalContent[] additionalContent; } function reduceDropAttributes(RightwayDecoder.Drop storage drop, RightwayDecoder.DropAttribute[] memory dropAttribute ) internal view returns ( MetadataAttribute[] memory ) { if (dropAttribute.length == 0) { return new MetadataAttribute[](0); } uint resultCount = 0; uint16 lastKey = 0xFFFF; for (uint16 idx = 0; idx < dropAttribute.length; idx++) { if (!dropAttribute[idx].isArray || dropAttribute[idx].key != lastKey) { resultCount++; lastKey = dropAttribute[idx].key; } } MetadataAttribute[] memory result = new MetadataAttribute[](resultCount); resultCount = 0; lastKey = dropAttribute[0].key; for (uint16 idx = 0; idx < dropAttribute.length; idx++) { if (!dropAttribute[idx].isArray || dropAttribute[idx].key != lastKey) { result[resultCount].isArray = dropAttribute[idx].isArray; result[resultCount].key = RightwayDecoder.decodeDropString(drop, dropAttribute[idx].key); result[resultCount].values = new string[](1); result[resultCount].values[0] = RightwayDecoder.decodeDropString(drop, dropAttribute[idx].value); resultCount++; lastKey = dropAttribute[idx].key; } else { string[] memory oldValues = result[resultCount - 1].values; result[resultCount - 1].values = new string[](oldValues.length + 1); for( uint vidx = 0; vidx < oldValues.length; vidx++) { result[resultCount - 1].values[vidx] = oldValues[vidx]; } result[resultCount - 1].values[oldValues.length] = RightwayDecoder.decodeDropString(drop, dropAttribute[idx].value); } } return result; } function getAttributes(RightwayDecoder.Drop storage drop, uint16 start, uint16 length) internal view returns ( MetadataAttribute[] memory ) { if (length == 0) { return new MetadataAttribute[](0); } RightwayDecoder.DropAttribute[] memory dropAttributes = new RightwayDecoder.DropAttribute[](length); for (uint16 idx = 0; idx < length; idx++) { dropAttributes[idx] = RightwayDecoder.decodeDropAttribute(drop, idx + start); } return reduceDropAttributes(drop, dropAttributes); } function getAttributes(string storage creator, RightwayDecoder.Drop storage drop, TokenState memory state, RightwayDecoder.DropEdition memory edition, RightwayDecoder.DropTemplate memory template) internal view returns ( MetadataAttribute[] memory ) { MetadataAttribute[] memory tokenAttributes = getAttributes(drop, state.attributesStart, state.attributesLength); MetadataAttribute[] memory editionAttributes = getAttributes(drop, edition.attributesStart, edition.attributesLength); MetadataAttribute[] memory templateAttributes = getAttributes(drop, template.attributesStart, template.attributesLength); uint totalAttributes = tokenAttributes.length + editionAttributes.length + templateAttributes.length + 1; MetadataAttribute[] memory result = new MetadataAttribute[](totalAttributes); uint outputIdx = 0; for (uint idx = 0; idx < tokenAttributes.length; idx++) { result[outputIdx++] = tokenAttributes[idx]; } for (uint idx = 0; idx < editionAttributes.length; idx++) { result[outputIdx++] = editionAttributes[idx]; } for (uint idx = 0; idx < templateAttributes.length; idx++) { result[outputIdx++] = templateAttributes[idx]; } result[outputIdx].isArray = false; result[outputIdx].key = 'creator'; result[outputIdx].values = new string[](1); result[outputIdx].values[0] = creator; return result; } function getContentDetails(RightwayDecoder.Drop storage drop, string storage contentApi, uint16 index) public view returns ( string memory uri, string memory contentLibraryArweaveHash, uint16 contentIndex, string memory contentType ) { RightwayDecoder.DropContent memory content = RightwayDecoder.decodeDropContent(drop, index); RightwayDecoder.DropContentLibrary storage contentLibrary = RightwayDecoder.getDropContentLibrary(drop, content.contentLibrary); contentIndex = content.contentIndex; contentLibraryArweaveHash = Base64.encode(contentLibrary.arweaveHash); if (content.contentType == 0) { contentType = 'png'; } else if (content.contentType == 1) { contentType = 'jpg'; } else if (content.contentType == 2) { contentType = 'svg'; } else if (content.contentType == 3) { contentType = 'mp4'; } uri = string(abi.encodePacked(contentApi, '/', contentLibraryArweaveHash, '/', Strings.toString(contentIndex), '.', contentType )); } function getContent(RightwayDecoder.Drop storage drop, string storage contentApi, uint16 start, uint16 length) internal view returns(MetadataContent[] memory) { MetadataContent[] memory result = new MetadataContent[](length); for(uint16 idx = 0; idx < length; idx++) { (result[idx].uri, result[idx].contentLibraryArweaveHash, result[idx].contentIndex, result[idx].contentType) = getContentDetails(drop, contentApi, start+idx); } return result; } function getContents(RightwayDecoder.Drop storage drop, string storage contentApi, RightwayDecoder.DropEdition memory edition, RightwayDecoder.DropTemplate memory template) internal view returns (MetadataContent[] memory) { MetadataContent[] memory editionContent = getContent(drop, contentApi, edition.contentStart, edition.contentLength); MetadataContent[] memory templateContent = getContent(drop, contentApi, template.contentStart, template.contentLength); uint totalContents = editionContent.length + templateContent.length; MetadataContent[] memory result = new MetadataContent[](totalContents); uint outputIdx = 0; for (uint idx = 0; idx < editionContent.length; idx++) { result[outputIdx++] = editionContent[idx]; } for (uint idx = 0; idx < templateContent.length; idx++) { result[outputIdx++] = templateContent[idx]; } return result; } function getAdditionalContent(string storage contentApi, AdditionalContent memory content ) internal pure returns (MetadataAdditionalContent memory) { MetadataAdditionalContent memory result; result.uri = string(abi.encodePacked(contentApi, '/', content.contentLibraryArweaveHash, '/', Strings.toString(content.contentIndex), '.', content.contentType )); result.contentLibraryArweaveHash = content.contentLibraryArweaveHash; result.contentIndex = content.contentIndex; result.contentType = content.contentType; result.slug = content.slug; return result; } function getAdditionalContents(string storage contentApi, TokenState memory state) internal pure returns (MetadataAdditionalContent[] memory) { MetadataAdditionalContent[] memory result = new MetadataAdditionalContent[](state.additionalContent.length); uint outputIdx = 0; for (uint idx = 0; idx < state.additionalContent.length; idx++) { result[outputIdx++] = getAdditionalContent(contentApi, state.additionalContent[idx]); } return result; } function getTemplateMetadata(RightwayDecoder.Drop storage drop, TokenMetadata memory result, RightwayDecoder.DropTemplate memory template) public view { result.name = RightwayDecoder.decodeDropSentence(drop, template.name); result.description = RightwayDecoder.decodeDropSentence(drop, template.description); result.totalRedemptions = template.redemptions; result.redemptionExpiration = template.redemptionExpiration; } function getEditionMetadata(TokenMetadata memory result, RightwayDecoder.DropEdition memory edition ) public pure { result.editionSize = edition.size; } function getTokenMetadata(TokenMetadata memory result, string storage creator, RightwayDecoder.Drop storage drop, string storage contentApi, uint256 tokenId, TokenState memory state) public view { require(tokenId < drop.numTokens, 'No such token'); RightwayDecoder.DropToken memory token = RightwayDecoder.decodeDropToken(drop, uint16(tokenId)); RightwayDecoder.DropEdition memory edition = RightwayDecoder.decodeDropEdition(drop, token.edition); RightwayDecoder.DropTemplate memory template = RightwayDecoder.decodeDropTemplate(drop, edition.template); getTemplateMetadata(drop, result, template); getEditionMetadata(result, edition); result.editionNumber = token.serial; result.attributes = getAttributes(creator, drop, state, edition, template); result.content = getContents(drop, contentApi, edition, template); result.additionalContent = getAdditionalContents(contentApi, state); } function getStateMetadata(TokenMetadata memory result, TokenState memory state, bool isMinted) public pure { result.soldOn = state.soldOn; result.buyer = state.buyer; result.price = state.price; result.isMinted = isMinted; uint numRedemptions = state.redemptions.length; result.redemptions = new TokenRedemption[](numRedemptions); for (uint idx = 0; idx < numRedemptions; idx++) { result.redemptions[idx] = state.redemptions[idx]; } } function getMetadata(string storage creator, RightwayDecoder.Drop storage drop, string storage contentApi, uint256 tokenId, TokenState memory state, bool isMinted) public view returns (TokenMetadata memory){ TokenMetadata memory result; getTokenMetadata(result, creator, drop, contentApi, tokenId, state); getStateMetadata(result, state, isMinted); return result; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface ISaleable { function processSale(uint256 offeringId, address buyer, uint256 price) external; function getSellersFor(uint256 offeringId) external view returns (address[] memory sellers); event SellerAdded(address indexed seller, uint256 indexed offeringId); event SellerRemoved(address indexed seller, uint256 indexed offeringId); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import './ISaleable.sol'; abstract contract Saleable is ISaleable { mapping(uint256 => address[]) public authorizedSellersByOffer; mapping(address => bool) public authorizedSellersAllOffers; function isAuthorizedSellerOf(address seller, uint256 offeringId) public view returns (bool) { if (authorizedSellersAllOffers[seller]) { return true; } for (uint256 idx = 0; idx < authorizedSellersByOffer[offeringId].length; idx++) { if (authorizedSellersByOffer[offeringId][idx] == seller) { return true; } } return false; } function _processSaleOffering(uint256, address, uint256) internal virtual { require(false, 'Unimplemented'); } function processSale(uint256 offeringId, address buyer, uint256 price) public override { require(isAuthorizedSellerOf(msg.sender, offeringId), 'Seller not authorized'); _processSaleOffering(offeringId, buyer, price); } function _registerSeller(uint256 offeringId, address seller) internal { require(!isAuthorizedSellerOf(seller, offeringId), 'Seller is already authorized'); authorizedSellersByOffer[offeringId].push(seller); } function _registerSeller(address seller) internal { authorizedSellersAllOffers[seller] = true; } function _deregisterSeller(uint256 offeringId, address seller) internal { require(isAuthorizedSellerOf(seller, offeringId), 'Seller was not authorized'); uint256 index = 0; for (; index < authorizedSellersByOffer[offeringId].length; index++) { if (authorizedSellersByOffer[offeringId][index] == seller) { break; } } uint256 len = authorizedSellersByOffer[offeringId].length; if (index < len - 1) { address temp = authorizedSellersByOffer[offeringId][index]; authorizedSellersByOffer[offeringId][index] = authorizedSellersByOffer[offeringId][len]; authorizedSellersByOffer[offeringId][len] = temp; } authorizedSellersByOffer[offeringId].pop(); } function _deregisterSeller(address seller) internal { authorizedSellersAllOffers[seller] = false; } function getSellersFor(uint256 offeringId) public view override returns (address[] memory sellers) { sellers = authorizedSellersByOffer[offeringId]; } }
// SPDX-License-Identifier: MIT // Adapted from OpenZeppelin public expiriment // @dev see https://github.com/OpenZeppelin/solidity-jwt/blob/2a787f1c12c50da649eed1670b3a6d9c0221dd8e/contracts/Base64.sol for original pragma solidity ^0.8.0; library Base64 { bytes constant private BASE_64_URL_CHARS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_'; function encode(uint256 bigint) external pure returns (string memory) { bytes32 buffer = bytes32(bigint); bytes memory res = new bytes(43); uint256 i = 0; uint256 j = 0; for (; i + 3 <= 32; i += 3) { (res[j], res[j+1], res[j+2], res[j+3]) = encode3( uint8(buffer[i]), uint8(buffer[i+1]), uint8(buffer[i+2]) ); j += 4; } (res[j], res[j+1], res[j+2], ) = encode3(uint8(buffer[30]), uint8(buffer[31]), 0); return string(res); } function encode3(uint256 a0, uint256 a1, uint256 a2) private pure returns (bytes1 b0, bytes1 b1, bytes1 b2, bytes1 b3) { uint256 n = (a0 << 16) | (a1 << 8) | a2; uint256 c0 = (n >> 18) & 63; uint256 c1 = (n >> 12) & 63; uint256 c2 = (n >> 6) & 63; uint256 c3 = (n ) & 63; b0 = BASE_64_URL_CHARS[c0]; b1 = BASE_64_URL_CHARS[c1]; b2 = BASE_64_URL_CHARS[c2]; b3 = BASE_64_URL_CHARS[c3]; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; library BinaryDecoder { function increment(uint bufferIdx, uint offset, uint amount) internal pure returns (uint, uint) { offset+=amount; return (bufferIdx + (offset / 32), offset % 32); } function decodeUint8(bytes32[0xFFFF] storage buffers, uint bufferIdx, uint offset) internal view returns (uint8, uint, uint) { uint8 result = 0; result |= uint8(buffers[bufferIdx][offset]); (bufferIdx, offset) = increment(bufferIdx, offset, 1); return (result, bufferIdx, offset); } function decodeUint16(bytes32[0xFFFF] storage buffers, uint bufferIdx, uint offset) internal view returns (uint16, uint, uint) { uint result = 0; if (offset % 32 < 31) { return decodeUint16Aligned(buffers, bufferIdx, offset); } result |= uint(uint8(buffers[bufferIdx][offset])) << 8; (bufferIdx, offset) = increment(bufferIdx, offset, 1); result |= uint(uint8(buffers[bufferIdx][offset])); (bufferIdx, offset) = increment(bufferIdx, offset, 1); return (uint16(result), bufferIdx, offset); } function decodeUint16Aligned(bytes32[0xFFFF] storage buffers, uint bufferIdx, uint offset) internal view returns (uint16, uint, uint) { uint result = 0; result |= uint(uint8(buffers[bufferIdx][offset])) << 8; result |= uint(uint8(buffers[bufferIdx][offset + 1])); (bufferIdx, offset) = increment(bufferIdx, offset, 2); return (uint16(result), bufferIdx, offset); } function decodeUint32(bytes32[0xFFFF] storage buffers, uint bufferIdx, uint offset) internal view returns (uint32, uint, uint) { if (offset % 32 < 29) { return decodeUint32Aligned(buffers, bufferIdx, offset); } uint result = 0; result |= uint(uint8(buffers[bufferIdx][offset])) << 24; (bufferIdx, offset) = increment(bufferIdx, offset, 1); result |= uint(uint8(buffers[bufferIdx][offset])) << 16; (bufferIdx, offset) = increment(bufferIdx, offset, 1); result |= uint(uint8(buffers[bufferIdx][offset])) << 8; (bufferIdx, offset) = increment(bufferIdx, offset, 1); result |= uint(uint8(buffers[bufferIdx][offset])); (bufferIdx, offset) = increment(bufferIdx, offset, 1); return (uint32(result), bufferIdx, offset); } function decodeUint32Aligned(bytes32[0xFFFF] storage buffers, uint bufferIdx, uint offset) internal view returns (uint32, uint, uint) { uint result = 0; result |= uint(uint8(buffers[bufferIdx][offset])) << 24; result |= uint(uint8(buffers[bufferIdx][offset + 1])) << 16; result |= uint(uint8(buffers[bufferIdx][offset + 2])) << 8; result |= uint(uint8(buffers[bufferIdx][offset + 3])); (bufferIdx, offset) = increment(bufferIdx, offset, 4); return (uint32(result), bufferIdx, offset); } function decodeUint64(bytes32[0xFFFF] storage buffers, uint bufferIdx, uint offset) internal view returns (uint64, uint, uint) { if (offset % 32 < 25) { return decodeUint64Aligned(buffers, bufferIdx, offset); } uint result = 0; result |= uint(uint8(buffers[bufferIdx][offset])) << 56; (bufferIdx, offset) = increment(bufferIdx, offset, 1); result |= uint(uint8(buffers[bufferIdx][offset])) << 48; (bufferIdx, offset) = increment(bufferIdx, offset, 1); result |= uint(uint8(buffers[bufferIdx][offset])) << 40; (bufferIdx, offset) = increment(bufferIdx, offset, 1); result |= uint(uint8(buffers[bufferIdx][offset])) << 32; (bufferIdx, offset) = increment(bufferIdx, offset, 1); result |= uint(uint8(buffers[bufferIdx][offset])) << 24; (bufferIdx, offset) = increment(bufferIdx, offset, 1); result |= uint(uint8(buffers[bufferIdx][offset])) << 16; (bufferIdx, offset) = increment(bufferIdx, offset, 1); result |= uint(uint8(buffers[bufferIdx][offset])) << 8; (bufferIdx, offset) = increment(bufferIdx, offset, 1); result |= uint(uint8(buffers[bufferIdx][offset])); (bufferIdx, offset) = increment(bufferIdx, offset, 1); return (uint64(result), bufferIdx, offset); } function decodeUint64Aligned(bytes32[0xFFFF] storage buffers, uint bufferIdx, uint offset) internal view returns (uint64, uint, uint) { uint result = 0; result |= uint(uint8(buffers[bufferIdx][offset])) << 56; result |= uint(uint8(buffers[bufferIdx][offset + 1])) << 48; result |= uint(uint8(buffers[bufferIdx][offset + 2])) << 40; result |= uint(uint8(buffers[bufferIdx][offset + 3])) << 32; result |= uint(uint8(buffers[bufferIdx][offset + 4])) << 24; result |= uint(uint8(buffers[bufferIdx][offset + 5])) << 16; result |= uint(uint8(buffers[bufferIdx][offset + 6])) << 8; result |= uint(uint8(buffers[bufferIdx][offset + 7])); (bufferIdx, offset) = increment(bufferIdx, offset, 8); return (uint64(result), bufferIdx, offset); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import './BinaryDecoder.sol'; library PackedVarArray { function getString(bytes32[0xFFFF] storage buffers, uint offset, uint len) internal view returns (string memory) { bytes memory result = new bytes(len); uint bufferIdx = offset / 32; uint bufferOffset = offset % 32; uint outIdx = 0; uint remaining = len; uint bufferCap = 32 - bufferOffset; while (outIdx < len) { uint copyCount = remaining > bufferCap ? bufferCap : remaining; uint lastOffset = bufferOffset + copyCount; bytes32 buffer = bytes32(buffers[bufferIdx]); while( bufferOffset < lastOffset) { result[outIdx++] = buffer[bufferOffset++]; } remaining -= copyCount; bufferCap = 32; bufferOffset = 0; bufferIdx++; } return string(result); } function getString(bytes32[0xFFFF] storage buffers, uint16 index) internal view returns (string memory) { uint offsetLoc = uint(index) * 4; uint stringOffsetLen; (stringOffsetLen,,) = BinaryDecoder.decodeUint32Aligned(buffers, offsetLoc / 32, offsetLoc % 32); uint stringOffset = stringOffsetLen & 0xFFFFFF; uint stringLen = stringOffsetLen >> 24; return getString(buffers, stringOffset, stringLen); } function getUint16Array(bytes32[0xFFFF] storage buffers, uint offset, uint len) internal view returns (uint16[] memory) { uint16[] memory result = new uint16[](len); uint bufferIdx = offset / 32; uint bufferOffset = offset % 32; uint outIdx = 0; uint remaining = len * 2; uint bufferCap = 32 - bufferOffset; while (outIdx < len) { uint copyCount = remaining > bufferCap ? bufferCap : remaining; uint lastOffset = bufferOffset + copyCount; bytes32 buffer = bytes32(buffers[bufferIdx]); while (bufferOffset < lastOffset) { result[outIdx] = uint16(uint8(buffer[bufferOffset++])) << 8; result[outIdx] |= uint16(uint8(buffer[bufferOffset++])); outIdx++; } remaining -= copyCount; bufferCap = 32; bufferOffset = 0; bufferIdx++; } return result; } function getUint16Array(bytes32[0xFFFF] storage buffers, uint16 index) internal view returns (uint16[] memory) { uint offsetLoc = uint(index) * 4; uint arrOffsetLen; (arrOffsetLen, ,) = BinaryDecoder.decodeUint32Aligned(buffers, offsetLoc / 32, offsetLoc % 32); uint arrOffset = arrOffsetLen & 0xFFFFFF; uint arrLen = arrOffsetLen >> 24; return getUint16Array(buffers, arrOffset, arrLen); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/Context.sol"; import "../utils/Strings.sol"; import "../utils/introspection/ERC165.sol"; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { function hasRole(bytes32 role, address account) external view returns (bool); function getRoleAdmin(bytes32 role) external view returns (bytes32); function grantRole(bytes32 role, address account) external; function revokeRole(bytes32 role, address account) external; function renounceRole(bytes32 role, address account) external; } /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping (address => bool) members; bytes32 adminRole; } mapping (bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{20}) is missing role (0x[0-9a-f]{32})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role, _msgSender()); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{20}) is missing role (0x[0-9a-f]{32})$/ */ function _checkRole(bytes32 role, address account) internal view { if(!hasRole(role, account)) { revert(string(abi.encodePacked( "AccessControl: account ", Strings.toHexString(uint160(account), 20), " is missing role ", Strings.toHexString(uint256(role), 32) ))); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view override returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { emit RoleAdminChanged(role, getRoleAdmin(role), adminRole); _roles[role].adminRole = adminRole; } function _grantRole(bytes32 role, address account) private { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } function _revokeRole(bytes32 role, address account) private { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } }
// SPDX-License-Identifier: MIT 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}. 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 { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_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 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(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { // solhint-disable-next-line no-inline-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. * * 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 { } }
// SPDX-License-Identifier: MIT 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 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 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 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 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 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; // solhint-disable-next-line no-inline-assembly 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"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (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"); // solhint-disable-next-line avoid-low-level-calls (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"); // solhint-disable-next-line avoid-low-level-calls (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"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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 // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT 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) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant alphabet = "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] = alphabet[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: MIT 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 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); }
{ "remappings": [], "optimizer": { "enabled": true, "runs": 200 }, "evmVersion": "istanbul", "libraries": { "/home/bart/git/InfinityTokens-contract/contracts/custom/RightwayMetadata.sol": { "RightwayMetadata": "0xEdbF1D9Ab63294cDA3965CafDA82E1F8A23A66E5" }, "/home/bart/git/InfinityTokens-contract/contracts/custom/RightwayDecoder.sol": { "RightwayDecoder": "0xcFD8AE98cA84D8314ad985ab8787F481c1C1927e" } }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } } }
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- No Contract Security Audit Submitted- Submit Audit Here
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RightwayDecoder.DropContentLibrary[]","name":"contentLibraries","type":"tuple[]"}],"name":"addDropContentLibraries","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32[]","name":"editions","type":"bytes32[]"},{"internalType":"uint256","name":"offset","type":"uint256"}],"name":"addDropEditions","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32[]","name":"sentences","type":"bytes32[]"},{"internalType":"uint256","name":"offset","type":"uint256"}],"name":"addDropSentences","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32[]","name":"stringData","type":"bytes32[]"},{"internalType":"uint256","name":"offset","type":"uint256"}],"name":"addDropStringData","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32[]","name":"templates","type":"bytes32[]"},{"internalType":"uint256","name":"offset","type":"uint256"}],"name":"addDropTemplates","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32[]","name":"tokens","type":"bytes32[]"},{"internalType":"uint256","name":"offset","type":"uint256"},{"internalType":"uint256","name":"length","type":"uint256"}],"name":"addDropTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"tokens","type":"uint256[]"},{"internalType":"string","name":"slug","type":"string"},{"internalType":"string","name":"contentLibraryArweaveHash","type":"string"},{"internalType":"uint16","name":"contentIndex","type":"uint16"},{"internalType":"string","name":"contentType","type":"string"}],"name":"addTokenContent","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"authorizedSellersAllOffers","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"authorizedSellersByOffer","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"creator","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"seller","type":"address"}],"name":"deregisterSeller","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"dropSealed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":"uint256","name":"","type":"uint256"}],"name":"getFeeBps","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"getFeeRecipients","outputs":[{"internalType":"address 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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e0000000000000000000000000000000000000000000000000000000000000000a566565467269656e64730000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000035646540000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000a566565467269656e647300000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : name (string): VeeFriends
Arg [1] : symbol (string): VFT
Arg [2] : newCreator (string): VeeFriends
-----Encoded View---------------
9 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [3] : 000000000000000000000000000000000000000000000000000000000000000a
Arg [4] : 566565467269656e647300000000000000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [6] : 5646540000000000000000000000000000000000000000000000000000000000
Arg [7] : 000000000000000000000000000000000000000000000000000000000000000a
Arg [8] : 566565467269656e647300000000000000000000000000000000000000000000
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