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{
"language": "Solidity",
"sources": {
"contracts/tokens/NiftyERC721Token.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9; \n \n// ,|||||< ~|||||' `_+7ykKD%RDqmI*~` \n// 8@@@@@@8' `Q@@@@@` `^oB@@@@@@@@@@@@@@@@@R|` \n// !@@@@@@@@Q; L@@@@@J '}Q@@@@@@QqonzJfk8@@@@@@@Q, \n// Q@@@@@@@@@@j `Q@@@@Q` `m@@@@@@h^` `?Q@@@@@* \n// =@@@@@@@@@@@@D. 7@@@@@i ~Q@@@@@w' ^@@@@@* \n// Q@@@@@m@@@@@@@Q! `@@@@@Q ;@@@@@@; .txxxx: \n// |@@@@@u *@@@@@@@@z u@@@@@* `Q@@@@@^ \n// `Q@@@@Q` 'W@@@@@@@R.'@@@@@B 7@@@@@% :DDDDDDDDDDDDDD5 \n// c@@@@@7 `Z@@@@@@@QK@@@@@+ 6@@@@@K aQQQQQQQ@@@@@@@* \n// `@@@@@Q` ^Q@@@@@@@@@@@W j@@@@@@; ,6@@@@@@# \n// t@@@@@L ,8@@@@@@@@@@! 'Q@@@@@@u, .=A@@@@@@@@^ \n// .@@@@@Q }@@@@@@@@D 'd@@@@@@@@gUwwU%Q@@@@@@@@@@g \n// j@@@@@< +@@@@@@@; ;wQ@@@@@@@@@@@@@@@Wf;8@@@; \n// ~;;;;; .;;;;;~ '!Lx5mEEmyt|!' ;;;~ \n//\n// Powered By: @niftygateway\n// Author: @niftynathang\n// Collaborators: @conviction_1 \n// @stormihoebe\n// @smatthewenglish\n// @dccockfoster\n// @blainemalone\n \n \n\nimport \"./ERC721Omnibus.sol\";\nimport \"../interfaces/IERC2309.sol\";\nimport \"../interfaces/IERC721MetadataGenerator.sol\";\nimport \"../interfaces/IERC721DefaultOwnerCloneable.sol\";\nimport \"../structs/NiftyType.sol\";\nimport \"../utils/Ownable.sol\";\nimport \"../utils/Signable.sol\";\nimport \"../utils/Withdrawable.sol\";\nimport \"../utils/Royalties.sol\";\n\ncontract NiftyERC721Token is ERC721Omnibus, Royalties, Signable, Withdrawable, Ownable, IERC2309 { \n using Address for address; \n \n event NiftyTypeCreated(address indexed contractAddress, uint256 niftyType, uint256 idFirst, uint256 idLast);\n \n uint256 constant internal MAX_INT = 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff; \n\n // A pointer to a contract that can generate token URI/metadata\n IERC721MetadataGenerator internal metadataGenerator;\n\n // Used to determine next nifty type/token ids to create on a mint call\n NiftyType internal lastNiftyType;\n\n // Sorted array of NiftyType definitions - ordered to allow binary searching\n NiftyType[] internal niftyTypes; \n\n // Mapping from Nifty type to IPFS hash of canonical artifact file.\n mapping(uint256 => string) private niftyTypeIPFSHashes;\n\n constructor() {\n \n } \n\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC721Omnibus, Royalties, NiftyPermissions) returns (bool) {\n return \n interfaceId == type(IERC2309).interfaceId ||\n super.supportsInterface(interfaceId);\n } \n\n function setMetadataGenerator(address metadataGenerator_) external { \n _requireOnlyValidSender();\n if(metadataGenerator_ == address(0)) {\n metadataGenerator = IERC721MetadataGenerator(metadataGenerator_);\n } else {\n require(IERC165(metadataGenerator_).supportsInterface(type(IERC721MetadataGenerator).interfaceId), \"Invalid Metadata Generator\"); \n metadataGenerator = IERC721MetadataGenerator(metadataGenerator_);\n } \n }\n\n function finalizeContract() external {\n _requireOnlyValidSender();\n require(!collectionStatus.isContractFinalized, ERROR_CONTRACT_IS_FINALIZED); \n collectionStatus.isContractFinalized = true;\n }\n\n function tokenURI(uint256 tokenId) public virtual view override returns (string memory) {\n if(address(metadataGenerator) == address(0)) {\n return super.tokenURI(tokenId);\n } else {\n require(_exists(tokenId), ERROR_QUERY_FOR_NONEXISTENT_TOKEN); \n return metadataGenerator.tokenMetadata(tokenId, _getNiftyType(tokenId), bytes(\"\"));\n } \n }\n\n function contractURI() public virtual view override returns (string memory) {\n if(address(metadataGenerator) == address(0)) {\n return super.contractURI();\n } else { \n return metadataGenerator.contractMetadata();\n } \n }\n\n function tokenIPFSHash(uint256 tokenId) external view returns (string memory) {\n require(_exists(tokenId), ERROR_QUERY_FOR_NONEXISTENT_TOKEN); \n return niftyTypeIPFSHashes[_getNiftyType(tokenId)];\n } \n\n function setIPFSHash(uint256 niftyType, string memory ipfsHash) external {\n _requireOnlyValidSender();\n require(bytes(niftyTypeIPFSHashes[niftyType]).length == 0, \"ERC721Metadata: IPFS hash already set\");\n niftyTypeIPFSHashes[niftyType] = ipfsHash; \n }\n\n function mint(uint256[] calldata amounts, string[] calldata ipfsHashes) external {\n _requireOnlyValidSender();\n \n require(amounts.length > 0 && ipfsHashes.length > 0, ERROR_INPUT_ARRAY_EMPTY);\n require(amounts.length == ipfsHashes.length, ERROR_INPUT_ARRAY_SIZE_MISMATCH);\n\n address to = collectionStatus.defaultOwner; \n require(to != address(0), ERROR_TRANSFER_TO_ZERO_ADDRESS); \n require(!collectionStatus.isContractFinalized, ERROR_CONTRACT_IS_FINALIZED); \n \n uint88 initialIdLast = lastNiftyType.idLast;\n uint72 nextNiftyType = lastNiftyType.niftyType;\n uint88 nextIdCounter = initialIdLast + 1;\n uint88 firstNewTokenId = nextIdCounter;\n uint88 lastIdCounter = 0;\n\n for(uint256 i = 0; i < amounts.length; i++) {\n require(amounts[i] > 0, ERROR_NO_TOKENS_MINTED); \n uint88 amount = uint88(amounts[i]); \n lastIdCounter = nextIdCounter + amount - 1;\n nextNiftyType++;\n \n if(bytes(ipfsHashes[i]).length > 0) {\n niftyTypeIPFSHashes[nextNiftyType] = ipfsHashes[i];\n }\n \n niftyTypes.push(NiftyType({\n isMinted: true,\n niftyType: nextNiftyType, \n idFirst: nextIdCounter, \n idLast: lastIdCounter\n }));\n\n emit NiftyTypeCreated(address(this), nextNiftyType, nextIdCounter, lastIdCounter);\n\n nextIdCounter += amount; \n }\n \n uint256 newlyMinted = lastIdCounter - initialIdLast; \n \n balances[to] += newlyMinted;\n\n lastNiftyType.niftyType = nextNiftyType;\n lastNiftyType.idLast = lastIdCounter;\n\n collectionStatus.amountCreated += uint88(newlyMinted); \n\n emit ConsecutiveTransfer(firstNewTokenId, lastIdCounter, address(0), to);\n } \n\n function setBaseURI(string calldata uri) external {\n _requireOnlyValidSender();\n _setBaseURI(uri); \n }\n\n function exists(uint256 tokenId) public view returns (bool) {\n return _exists(tokenId);\n } \n\n function burn(uint256 tokenId) public {\n _burn(tokenId);\n }\n\n function burnBatch(uint256[] calldata tokenIds) public {\n require(tokenIds.length > 0, ERROR_INPUT_ARRAY_EMPTY);\n for(uint256 i = 0; i < tokenIds.length; i++) {\n _burn(tokenIds[i]);\n } \n }\n\n function getNiftyTypes() public view returns (NiftyType[] memory) {\n return niftyTypes;\n }\n\n function getNiftyTypeDetails(uint256 niftyType) public view returns (NiftyType memory) {\n uint256 niftyTypeIndex = MAX_INT;\n unchecked {\n niftyTypeIndex = niftyType - 1;\n }\n \n if(niftyTypeIndex >= niftyTypes.length) {\n revert('Nifty Type Does Not Exist');\n }\n return niftyTypes[niftyTypeIndex];\n } \n \n function _isValidTokenId(uint256 tokenId) internal virtual view override returns (bool) { \n return tokenId > 0 && tokenId <= collectionStatus.amountCreated;\n } \n\n // Performs a binary search of the nifty types array to find which nifty type a token id is associated with\n // This is more efficient than iterating the entire nifty type array until the proper entry is found.\n // This is O(log n) instead of O(n)\n function _getNiftyType(uint256 tokenId) internal virtual override view returns (uint256) { \n uint256 min = 0;\n uint256 max = niftyTypes.length - 1;\n uint256 guess = (max - min) / 2;\n \n while(guess < niftyTypes.length) {\n NiftyType storage guessResult = niftyTypes[guess];\n if(tokenId >= guessResult.idFirst && tokenId <= guessResult.idLast) {\n return guessResult.niftyType;\n } else if(tokenId > guessResult.idLast) {\n min = guess + 1;\n guess = min + (max - min) / 2;\n } else if(tokenId < guessResult.idFirst) {\n max = guess - 1;\n guess = min + (max - min) / 2;\n }\n }\n\n return 0;\n } \n}"
},
"contracts/tokens/ERC721Omnibus.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./ERC721.sol\";\nimport \"../interfaces/IERC721DefaultOwnerCloneable.sol\";\n\nabstract contract ERC721Omnibus is ERC721, IERC721DefaultOwnerCloneable {\n \n struct TokenOwner {\n bool transferred;\n address ownerAddress;\n }\n\n struct CollectionStatus {\n bool isContractFinalized; // 1 byte\n uint88 amountCreated; // 11 bytes\n address defaultOwner; // 20 bytes\n } \n\n // Only allow Nifty Entity to be initialized once\n bool internal initializedDefaultOwner;\n CollectionStatus internal collectionStatus;\n\n // Mapping from token ID to owner address \n mapping(uint256 => TokenOwner) internal ownersOptimized; \n\n function initializeDefaultOwner(address defaultOwner_) public {\n require(!initializedDefaultOwner, ERROR_REINITIALIZATION_NOT_PERMITTED);\n collectionStatus.defaultOwner = defaultOwner_;\n initializedDefaultOwner = true;\n } \n\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC721, IERC165) returns (bool) {\n return \n interfaceId == type(IERC721DefaultOwnerCloneable).interfaceId ||\n super.supportsInterface(interfaceId);\n } \n\n function getCollectionStatus() public view virtual returns (CollectionStatus memory) {\n return collectionStatus;\n }\n \n function ownerOf(uint256 tokenId) public view virtual override returns (address owner) {\n require(_isValidTokenId(tokenId), ERROR_QUERY_FOR_NONEXISTENT_TOKEN);\n owner = ownersOptimized[tokenId].transferred ? ownersOptimized[tokenId].ownerAddress : collectionStatus.defaultOwner;\n require(owner != address(0), ERROR_QUERY_FOR_NONEXISTENT_TOKEN);\n } \n \n function _exists(uint256 tokenId) internal view virtual override returns (bool) {\n if(_isValidTokenId(tokenId)) { \n return ownersOptimized[tokenId].ownerAddress != address(0) || !ownersOptimized[tokenId].transferred;\n }\n return false; \n }\n \n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual override returns (address owner, bool isApprovedOrOwner) {\n owner = ownerOf(tokenId);\n isApprovedOrOwner = (spender == owner || tokenApprovals[tokenId] == spender || isApprovedForAll(owner, spender));\n } \n\n function _clearOwnership(uint256 tokenId) internal virtual override {\n ownersOptimized[tokenId].transferred = true;\n ownersOptimized[tokenId].ownerAddress = address(0);\n }\n\n function _setOwnership(address to, uint256 tokenId) internal virtual override {\n ownersOptimized[tokenId].transferred = true;\n ownersOptimized[tokenId].ownerAddress = to;\n } \n\n function _isValidTokenId(uint256 /*tokenId*/) internal virtual view returns (bool); \n}"
},
"contracts/interfaces/IERC2309.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\n/**\n * @dev Interface of the ERC2309 standard as defined in the EIP.\n */\ninterface IERC2309 {\n \n /**\n * @dev Emitted when consecutive token ids in range ('fromTokenId') to ('toTokenId') are transferred from one account (`fromAddress`) to\n * another (`toAddress`).\n *\n * Note that `value` may be zero.\n */\n event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed fromAddress, address indexed toAddress);\n}"
},
"contracts/interfaces/IERC721MetadataGenerator.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./IERC165.sol\";\n\ninterface IERC721MetadataGenerator is IERC165 {\n function contractMetadata() external view returns (string memory);\n function tokenMetadata(uint256 tokenId, uint256 niftyType, bytes calldata data) external view returns (string memory);\n}"
},
"contracts/interfaces/IERC721DefaultOwnerCloneable.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./IERC165.sol\";\n\ninterface IERC721DefaultOwnerCloneable is IERC165 {\n function initializeDefaultOwner(address defaultOwner_) external; \n}"
},
"contracts/structs/NiftyType.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nstruct NiftyType {\n bool isMinted; // 1 bytes\n uint72 niftyType; // 9 bytes\n uint88 idFirst; // 11 bytes\n uint88 idLast; // 11 bytes\n}"
},
"contracts/utils/Ownable.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./NiftyPermissions.sol\";\n\nabstract contract Ownable is NiftyPermissions { \n \n address private _owner;\n\n event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); \n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n \n function transferOwnership(address newOwner) public virtual {\n _requireOnlyValidSender(); \n address oldOwner = _owner; \n _owner = newOwner; \n emit OwnershipTransferred(oldOwner, newOwner); \n }\n}"
},
"contracts/utils/Signable.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./NiftyPermissions.sol\";\nimport \"../libraries/ECDSA.sol\";\nimport \"../structs/SignatureStatus.sol\";\n\nabstract contract Signable is NiftyPermissions { \n\n event ContractSigned(address signer, bytes32 data, bytes signature);\n\n SignatureStatus public signatureStatus;\n bytes public signature;\n\n string internal constant ERROR_CONTRACT_ALREADY_SIGNED = \"Contract already signed\";\n string internal constant ERROR_CONTRACT_NOT_SALTED = \"Contract not salted\";\n string internal constant ERROR_INCORRECT_SECRET_SALT = \"Incorrect secret salt\";\n string internal constant ERROR_SALTED_HASH_SET_TO_ZERO = \"Salted hash set to zero\";\n string internal constant ERROR_SIGNER_SET_TO_ZERO = \"Signer set to zero address\";\n\n function setSigner(address signer_, bytes32 saltedHash_) external {\n _requireOnlyValidSender();\n\n require(signer_ != address(0), ERROR_SIGNER_SET_TO_ZERO);\n require(saltedHash_ != bytes32(0), ERROR_SALTED_HASH_SET_TO_ZERO);\n require(!signatureStatus.isVerified, ERROR_CONTRACT_ALREADY_SIGNED);\n \n signatureStatus.signer = signer_;\n signatureStatus.saltedHash = saltedHash_;\n signatureStatus.isSalted = true;\n }\n\n function sign(uint256 salt, bytes calldata signature_) external {\n require(!signatureStatus.isVerified, ERROR_CONTRACT_ALREADY_SIGNED); \n require(signatureStatus.isSalted, ERROR_CONTRACT_NOT_SALTED);\n \n address expectedSigner = signatureStatus.signer;\n bytes32 expectedSaltedHash = signatureStatus.saltedHash;\n\n require(_msgSender() == expectedSigner, ERROR_INVALID_MSG_SENDER);\n require(keccak256(abi.encodePacked(salt)) == expectedSaltedHash, ERROR_INCORRECT_SECRET_SALT);\n require(ECDSA.recover(ECDSA.toEthSignedMessageHash(expectedSaltedHash), signature_) == expectedSigner, ERROR_UNEXPECTED_DATA_SIGNER);\n \n signature = signature_; \n signatureStatus.isVerified = true;\n\n emit ContractSigned(expectedSigner, expectedSaltedHash, signature_);\n }\n}"
},
"contracts/utils/Withdrawable.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./RejectEther.sol\";\nimport \"./NiftyPermissions.sol\";\nimport \"../interfaces/IERC20.sol\";\nimport \"../interfaces/IERC721.sol\";\n\nabstract contract Withdrawable is RejectEther, NiftyPermissions {\n\n /**\n * @dev Slither identifies an issue with sending ETH to an arbitrary destianation.\n * https://github.com/crytic/slither/wiki/Detector-Documentation#functions-that-send-ether-to-arbitrary-destinations\n * Recommended mitigation is to \"Ensure that an arbitrary user cannot withdraw unauthorized funds.\"\n * This mitigation has been performed, as only the contract admin can call 'withdrawETH' and they should\n * verify the recipient should receive the ETH first.\n */\n function withdrawETH(address payable recipient, uint256 amount) external {\n _requireOnlyValidSender();\n require(amount > 0, ERROR_ZERO_ETH_TRANSFER);\n require(recipient != address(0), \"Transfer to zero address\");\n\n uint256 currentBalance = address(this).balance;\n require(amount <= currentBalance, ERROR_INSUFFICIENT_BALANCE);\n\n //slither-disable-next-line arbitrary-send \n (bool success,) = recipient.call{value: amount}(\"\");\n require(success, ERROR_WITHDRAW_UNSUCCESSFUL);\n }\n \n function withdrawERC20(address tokenContract, address recipient, uint256 amount) external {\n _requireOnlyValidSender();\n bool success = IERC20(tokenContract).transfer(recipient, amount);\n require(success, ERROR_WITHDRAW_UNSUCCESSFUL);\n }\n \n function withdrawERC721(address tokenContract, address recipient, uint256 tokenId) external {\n _requireOnlyValidSender();\n IERC721(tokenContract).safeTransferFrom(address(this), recipient, tokenId, \"\");\n } \n}"
},
"contracts/utils/Royalties.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./NiftyPermissions.sol\";\nimport \"../libraries/Clones.sol\";\nimport \"../interfaces/IERC20.sol\";\nimport \"../interfaces/IERC721.sol\";\nimport \"../interfaces/IERC2981.sol\";\nimport \"../interfaces/ICloneablePaymentSplitter.sol\";\nimport \"../structs/RoyaltyRecipient.sol\";\n\nabstract contract Royalties is NiftyPermissions, IERC2981 {\n\n event RoyaltyReceiverUpdated(uint256 indexed niftyType, address previousReceiver, address newReceiver);\n\n uint256 constant public BIPS_PERCENTAGE_TOTAL = 10000;\n\n // Royalty information mapped by nifty type\n mapping (uint256 => RoyaltyRecipient) internal royaltyRecipients;\n\n function supportsInterface(bytes4 interfaceId) public view virtual override(NiftyPermissions, IERC165) returns (bool) {\n return\n interfaceId == type(IERC2981).interfaceId || \n super.supportsInterface(interfaceId);\n }\n\n function getRoyaltySettings(uint256 niftyType) public view returns (RoyaltyRecipient memory) {\n return royaltyRecipients[niftyType];\n }\n \n function setRoyaltyBips(uint256 niftyType, uint256 bips) external {\n _requireOnlyValidSender();\n require(bips <= BIPS_PERCENTAGE_TOTAL, ERROR_BIPS_OVER_100_PERCENT);\n royaltyRecipients[niftyType].bips = uint16(bips);\n }\n \n function royaltyInfo(uint256 tokenId, uint256 salePrice) public virtual override view returns (address, uint256) { \n uint256 niftyType = _getNiftyType(tokenId); \n return royaltyRecipients[niftyType].recipient == address(0) ? \n (address(0), 0) :\n (royaltyRecipients[niftyType].recipient, (salePrice * royaltyRecipients[niftyType].bips) / BIPS_PERCENTAGE_TOTAL);\n } \n\n function initializeRoyalties(uint256 niftyType, address splitterImplementation, address[] calldata payees, uint256[] calldata shares) external returns (address) {\n _requireOnlyValidSender(); \n address previousReceiver = royaltyRecipients[niftyType].recipient; \n royaltyRecipients[niftyType].isPaymentSplitter = payees.length > 1;\n royaltyRecipients[niftyType].recipient = payees.length == 1 ? payees[0] : _clonePaymentSplitter(splitterImplementation, payees, shares); \n emit RoyaltyReceiverUpdated(niftyType, previousReceiver, royaltyRecipients[niftyType].recipient); \n return royaltyRecipients[niftyType].recipient;\n } \n\n function getNiftyType(uint256 tokenId) public view returns (uint256) {\n return _getNiftyType(tokenId);\n } \n\n function getPaymentSplitterByNiftyType(uint256 niftyType) public virtual view returns (address) {\n return _getPaymentSplitter(niftyType);\n }\n\n function getPaymentSplitterByTokenId(uint256 tokenId) public virtual view returns (address) {\n return _getPaymentSplitter(_getNiftyType(tokenId));\n } \n\n function _getNiftyType(uint256 tokenId) internal virtual view returns (uint256) { \n return 0;\n }\n\n function _clonePaymentSplitter(address splitterImplementation, address[] calldata payees, uint256[] calldata shares_) internal returns (address) {\n require(IERC165(splitterImplementation).supportsInterface(type(ICloneablePaymentSplitter).interfaceId), ERROR_UNCLONEABLE_REFERENCE_CONTRACT);\n address clone = payable (Clones.clone(splitterImplementation));\n ICloneablePaymentSplitter(clone).initialize(payees, shares_); \n return clone;\n }\n\n function _getPaymentSplitter(uint256 niftyType) internal virtual view returns (address) { \n return royaltyRecipients[niftyType].isPaymentSplitter ? royaltyRecipients[niftyType].recipient : address(0); \n }\n}"
},
"contracts/tokens/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./ERC721Errors.sol\";\nimport \"../interfaces/IERC721.sol\";\nimport \"../interfaces/IERC721Receiver.sol\";\nimport \"../interfaces/IERC721Metadata.sol\";\nimport \"../interfaces/IERC721Cloneable.sol\";\nimport \"../libraries/Address.sol\";\nimport \"../libraries/Context.sol\";\nimport \"../libraries/Strings.sol\";\nimport \"../utils/ERC165.sol\";\nimport \"../utils/GenericErrors.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\nabstract contract ERC721 is Context, ERC165, ERC721Errors, GenericErrors, IERC721Metadata, IERC721Cloneable {\n using Address for address;\n using Strings for uint256;\n\n // Only allow ERC721 to be initialized once\n bool internal initializedERC721;\n\n // Token name\n string internal tokenName;\n\n // Token symbol\n string internal tokenSymbol;\n\n // Base URI For Offchain Metadata\n string internal baseMetadataURI; \n\n // Mapping from token ID to owner address\n mapping(uint256 => address) internal owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) internal balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) internal tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) internal operatorApprovals; \n\n function initializeERC721(string memory name_, string memory symbol_, string memory baseURI_) public override {\n require(!initializedERC721, ERROR_REINITIALIZATION_NOT_PERMITTED);\n tokenName = name_;\n tokenSymbol = symbol_;\n _setBaseURI(baseURI_);\n initializedERC721 = true;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n interfaceId == type(IERC721Cloneable).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */ \n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), ERROR_QUERY_FOR_ZERO_ADDRESS);\n return balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = owners[tokenId];\n require(owner != address(0), ERROR_QUERY_FOR_NONEXISTENT_TOKEN);\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */ \n function name() public view virtual override returns (string memory) {\n return tokenName;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */ \n function symbol() public view virtual override returns (string memory) {\n return tokenSymbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */ \n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n require(_exists(tokenId), ERROR_QUERY_FOR_NONEXISTENT_TOKEN);\n\n string memory uriBase = baseURI();\n return bytes(uriBase).length > 0 ? string(abi.encodePacked(uriBase, tokenId.toString())) : \"\";\n }\n\n function baseURI() public view virtual returns (string memory) {\n return baseMetadataURI;\n }\n\n /**\n * @dev Storefront-level metadata for contract\n */\n function contractURI() public view virtual returns (string memory) {\n string memory uriBase = baseURI();\n return bytes(uriBase).length > 0 ? string(abi.encodePacked(uriBase, \"contract-metadata\")) : \"\";\n }\n\n /**\n * @dev Internal function to set the base URI\n */\n function _setBaseURI(string memory uri) internal {\n baseMetadataURI = uri; \n }\n\n /**\n * @dev See {IERC721-approve}.\n */ \n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ownerOf(tokenId);\n require(to != owner, ERROR_APPROVAL_TO_CURRENT_OWNER);\n\n require(_msgSender() == owner || isApprovedForAll(owner, _msgSender()), ERROR_NOT_OWNER_NOR_APPROVED);\n\n _approve(owner, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */ \n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n require(_exists(tokenId), ERROR_QUERY_FOR_NONEXISTENT_TOKEN);\n return tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */ \n function setApprovalForAll(address operator, bool approved) public virtual override {\n require(operator != _msgSender(), ERROR_APPROVE_TO_CALLER);\n operatorApprovals[_msgSender()][operator] = approved;\n emit ApprovalForAll(_msgSender(), operator, approved); \n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */ \n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */ \n function transferFrom(address from, address to, uint256 tokenId) public virtual override { \n (address owner, bool isApprovedOrOwner) = _isApprovedOrOwner(_msgSender(), tokenId);\n require(isApprovedOrOwner, ERROR_NOT_OWNER_NOR_APPROVED);\n _transfer(owner, from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */ \n function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */ \n function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual override {\n transferFrom(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), ERROR_NOT_AN_ERC721_RECEIVER);\n } \n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */ \n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (address owner, bool isApprovedOrOwner) {\n owner = owners[tokenId];\n require(owner != address(0), ERROR_QUERY_FOR_NONEXISTENT_TOKEN);\n isApprovedOrOwner = (spender == owner || tokenApprovals[tokenId] == spender || isApprovedForAll(owner, spender));\n } \n \n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ownerOf(tokenId);\n bool isApprovedOrOwner = (_msgSender() == owner || tokenApprovals[tokenId] == _msgSender() || isApprovedForAll(owner, _msgSender()));\n require(isApprovedOrOwner, ERROR_NOT_OWNER_NOR_APPROVED);\n\n // Clear approvals \n _clearApproval(owner, tokenId);\n\n balances[owner] -= 1;\n _clearOwnership(tokenId);\n\n emit Transfer(owner, address(0), tokenId);\n } \n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(address owner, address from, address to, uint256 tokenId) internal virtual {\n require(owner == from, ERROR_TRANSFER_FROM_INCORRECT_OWNER);\n require(to != address(0), ERROR_TRANSFER_TO_ZERO_ADDRESS); \n\n // Clear approvals from the previous owner \n _clearApproval(owner, tokenId);\n\n balances[from] -= 1;\n balances[to] += 1;\n _setOwnership(to, tokenId);\n \n emit Transfer(from, to, tokenId); \n }\n\n /**\n * @dev Equivalent to approving address(0), but more gas efficient\n *\n * Emits a {Approval} event.\n */\n function _clearApproval(address owner, uint256 tokenId) internal virtual {\n delete tokenApprovals[tokenId];\n emit Approval(owner, address(0), tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits a {Approval} event.\n */\n function _approve(address owner, address to, uint256 tokenId) internal virtual {\n tokenApprovals[tokenId] = to;\n emit Approval(owner, to, tokenId);\n } \n\n function _clearOwnership(uint256 tokenId) internal virtual {\n delete owners[tokenId];\n }\n\n function _setOwnership(address to, uint256 tokenId) internal virtual {\n owners[tokenId] = to;\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param _data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n *\n * @dev Slither identifies an issue with unused return value.\n * Reference: https://github.com/crytic/slither/wiki/Detector-Documentation#unused-return\n * This should be a non-issue. It is the standard OpenZeppelin implementation which has been heavily used and audited.\n */ \n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory _data\n ) internal returns (bool) {\n if (to.isContract()) { \n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(ERROR_NOT_AN_ERC721_RECEIVER);\n } else { \n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n } \n}"
},
"contracts/tokens/ERC721Errors.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nabstract contract ERC721Errors {\n string internal constant ERROR_QUERY_FOR_ZERO_ADDRESS = \"Query for zero address\";\n string internal constant ERROR_QUERY_FOR_NONEXISTENT_TOKEN = \"Token does not exist\";\n string internal constant ERROR_APPROVAL_TO_CURRENT_OWNER = \"Current owner approval\";\n string internal constant ERROR_APPROVE_TO_CALLER = \"Approve to caller\";\n string internal constant ERROR_NOT_OWNER_NOR_APPROVED = \"Not owner nor approved\";\n string internal constant ERROR_NOT_AN_ERC721_RECEIVER = \"Not an ERC721Receiver\";\n string internal constant ERROR_TRANSFER_FROM_INCORRECT_OWNER = \"Transfer from incorrect owner\";\n string internal constant ERROR_TRANSFER_TO_ZERO_ADDRESS = \"Transfer to zero address\"; \n string internal constant ERROR_ALREADY_MINTED = \"Token already minted\"; \n string internal constant ERROR_NO_TOKENS_MINTED = \"No tokens minted\"; \n}"
},
"contracts/interfaces/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n}"
},
"contracts/interfaces/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}"
},
"contracts/interfaces/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}"
},
"contracts/interfaces/IERC721Cloneable.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./IERC721.sol\";\n\ninterface IERC721Cloneable is IERC721 {\n function initializeERC721(string calldata name_, string calldata symbol_, string calldata baseURI_) external; \n}"
},
"contracts/libraries/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}"
},
"contracts/libraries/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}"
},
"contracts/libraries/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n}"
},
"contracts/utils/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"../interfaces/IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}"
},
"contracts/utils/GenericErrors.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nabstract contract GenericErrors {\n string internal constant ERROR_INPUT_ARRAY_EMPTY = \"Input array empty\";\n string internal constant ERROR_INPUT_ARRAY_SIZE_MISMATCH = \"Input array size mismatch\";\n string internal constant ERROR_INVALID_MSG_SENDER = \"Invalid msg.sender\";\n string internal constant ERROR_UNEXPECTED_DATA_SIGNER = \"Unexpected data signer\";\n string internal constant ERROR_INSUFFICIENT_BALANCE = \"Insufficient balance\";\n string internal constant ERROR_WITHDRAW_UNSUCCESSFUL = \"Withdraw unsuccessful\";\n string internal constant ERROR_CONTRACT_IS_FINALIZED = \"Contract is finalized\";\n string internal constant ERROR_CANNOT_CHANGE_DEFAULT_OWNER = \"Cannot change default owner\";\n string internal constant ERROR_UNCLONEABLE_REFERENCE_CONTRACT = \"Uncloneable reference contract\";\n string internal constant ERROR_BIPS_OVER_100_PERCENT = \"Bips over 100%\";\n string internal constant ERROR_NO_ROYALTY_RECEIVER = \"No royalty receiver\";\n string internal constant ERROR_REINITIALIZATION_NOT_PERMITTED = \"Re-initialization not permitted\";\n string internal constant ERROR_ZERO_ETH_TRANSFER = \"Zero ETH Transfer\";\n}"
},
"contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}"
},
"contracts/utils/NiftyPermissions.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./ERC165.sol\";\nimport \"./GenericErrors.sol\";\nimport \"../interfaces/INiftyEntityCloneable.sol\";\nimport \"../interfaces/INiftyRegistry.sol\";\nimport \"../libraries/Context.sol\";\n\nabstract contract NiftyPermissions is Context, ERC165, GenericErrors, INiftyEntityCloneable { \n\n event AdminTransferred(address indexed previousAdmin, address indexed newAdmin);\n\n // Only allow Nifty Entity to be initialized once\n bool internal initializedNiftyEntity;\n\n // If address(0), use enable Nifty Gateway permissions - otherwise, specifies the address with permissions\n address public admin;\n\n // To prevent a mistake, transferring admin rights will be a two step process\n // First, the current admin nominates a new admin\n // Second, the nominee accepts admin\n address public nominatedAdmin;\n\n // Nifty Registry Contract\n INiftyRegistry internal permissionsRegistry; \n\n function initializeNiftyEntity(address niftyRegistryContract_) public {\n require(!initializedNiftyEntity, ERROR_REINITIALIZATION_NOT_PERMITTED);\n permissionsRegistry = INiftyRegistry(niftyRegistryContract_);\n initializedNiftyEntity = true;\n } \n \n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return \n interfaceId == type(INiftyEntityCloneable).interfaceId ||\n super.supportsInterface(interfaceId);\n } \n\n function renounceAdmin() external {\n _requireOnlyValidSender();\n _transferAdmin(address(0));\n } \n\n function nominateAdmin(address nominee) external {\n _requireOnlyValidSender();\n nominatedAdmin = nominee;\n }\n\n function acceptAdmin() external {\n address nominee = nominatedAdmin;\n require(_msgSender() == nominee, ERROR_INVALID_MSG_SENDER);\n _transferAdmin(nominee);\n }\n \n function _requireOnlyValidSender() internal view { \n address currentAdmin = admin; \n if(currentAdmin == address(0)) {\n require(permissionsRegistry.isValidNiftySender(_msgSender()), ERROR_INVALID_MSG_SENDER);\n } else {\n require(_msgSender() == currentAdmin, ERROR_INVALID_MSG_SENDER);\n }\n } \n\n function _transferAdmin(address newAdmin) internal {\n address oldAdmin = admin;\n admin = newAdmin;\n delete nominatedAdmin; \n emit AdminTransferred(oldAdmin, newAdmin);\n }\n}"
},
"contracts/interfaces/INiftyEntityCloneable.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./IERC165.sol\";\n\ninterface INiftyEntityCloneable is IERC165 {\n function initializeNiftyEntity(address niftyRegistryContract_) external;\n}"
},
"contracts/interfaces/INiftyRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\ninterface INiftyRegistry {\n function isValidNiftySender(address sendingKey) external view returns (bool);\n}"
},
"contracts/libraries/ECDSA.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/cryptography/ECDSA.sol)\n\npragma solidity 0.8.9;\n\nimport \"./Strings.sol\";\n\n/**\n * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.\n *\n * These functions can be used to verify that a message was signed by the holder\n * of the private keys of a given address.\n */\nlibrary ECDSA {\n enum RecoverError {\n NoError,\n InvalidSignature,\n InvalidSignatureLength,\n InvalidSignatureS,\n InvalidSignatureV\n }\n\n function _throwError(RecoverError error) private pure {\n if (error == RecoverError.NoError) {\n return; // no error: do nothing\n } else if (error == RecoverError.InvalidSignature) {\n revert(\"ECDSA: invalid signature\");\n } else if (error == RecoverError.InvalidSignatureLength) {\n revert(\"ECDSA: invalid signature length\");\n } else if (error == RecoverError.InvalidSignatureS) {\n revert(\"ECDSA: invalid signature 's' value\");\n } else if (error == RecoverError.InvalidSignatureV) {\n revert(\"ECDSA: invalid signature 'v' value\");\n }\n }\n\n /**\n * @dev Returns the address that signed a hashed message (`hash`) with\n * `signature` or error string. This address can then be used for verification purposes.\n *\n * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n * this function rejects them by requiring the `s` value to be in the lower\n * half order, and the `v` value to be either 27 or 28.\n *\n * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n * verification to be secure: it is possible to craft signatures that\n * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n * this is by receiving a hash of the original message (which may otherwise\n * be too long), and then calling {toEthSignedMessageHash} on it.\n *\n * Documentation for signature generation:\n * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]\n * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]\n *\n * _Available since v4.3._\n */\n function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {\n // Check the signature length\n // - case 65: r,s,v signature (standard)\n // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._\n if (signature.length == 65) {\n bytes32 r;\n bytes32 s;\n uint8 v;\n // ecrecover takes the signature parameters, and the only way to get them\n // currently is to use assembly.\n assembly {\n r := mload(add(signature, 0x20))\n s := mload(add(signature, 0x40))\n v := byte(0, mload(add(signature, 0x60)))\n }\n return tryRecover(hash, v, r, s);\n } else if (signature.length == 64) {\n bytes32 r;\n bytes32 vs;\n // ecrecover takes the signature parameters, and the only way to get them\n // currently is to use assembly.\n assembly {\n r := mload(add(signature, 0x20))\n vs := mload(add(signature, 0x40))\n }\n return tryRecover(hash, r, vs);\n } else {\n return (address(0), RecoverError.InvalidSignatureLength);\n }\n }\n\n /**\n * @dev Returns the address that signed a hashed message (`hash`) with\n * `signature`. This address can then be used for verification purposes.\n *\n * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n * this function rejects them by requiring the `s` value to be in the lower\n * half order, and the `v` value to be either 27 or 28.\n *\n * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n * verification to be secure: it is possible to craft signatures that\n * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n * this is by receiving a hash of the original message (which may otherwise\n * be too long), and then calling {toEthSignedMessageHash} on it.\n */\n function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, signature);\n _throwError(error);\n return recovered;\n }\n\n /**\n * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.\n *\n * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]\n *\n * _Available since v4.3._\n */\n function tryRecover(\n bytes32 hash,\n bytes32 r,\n bytes32 vs\n ) internal pure returns (address, RecoverError) {\n bytes32 s;\n uint8 v;\n assembly {\n s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)\n v := add(shr(255, vs), 27)\n }\n return tryRecover(hash, v, r, s);\n }\n\n /**\n * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.\n *\n * _Available since v4.2._\n */\n function recover(\n bytes32 hash,\n bytes32 r,\n bytes32 vs\n ) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, r, vs);\n _throwError(error);\n return recovered;\n }\n\n /**\n * @dev Overload of {ECDSA-tryRecover} that receives the `v`,\n * `r` and `s` signature fields separately.\n *\n * _Available since v4.3._\n */\n function tryRecover(\n bytes32 hash,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal pure returns (address, RecoverError) {\n // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature\n // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines\n // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most\n // signatures from current libraries generate a unique signature with an s-value in the lower half order.\n //\n // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value\n // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or\n // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept\n // these malleable signatures as well.\n if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {\n return (address(0), RecoverError.InvalidSignatureS);\n }\n if (v != 27 && v != 28) {\n return (address(0), RecoverError.InvalidSignatureV);\n }\n\n // If the signature is valid (and not malleable), return the signer address\n address signer = ecrecover(hash, v, r, s);\n if (signer == address(0)) {\n return (address(0), RecoverError.InvalidSignature);\n }\n\n return (signer, RecoverError.NoError);\n }\n\n /**\n * @dev Overload of {ECDSA-recover} that receives the `v`,\n * `r` and `s` signature fields separately.\n */\n function recover(\n bytes32 hash,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, v, r, s);\n _throwError(error);\n return recovered;\n }\n\n /**\n * @dev Returns an Ethereum Signed Message, created from a `hash`. This\n * produces hash corresponding to the one signed with the\n * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n * JSON-RPC method as part of EIP-191.\n *\n * See {recover}.\n */ \n function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {\n // 32 is the length in bytes of hash,\n // enforced by the type signature above\n return keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n32\", hash));\n }\n\n /**\n * @dev Returns an Ethereum Signed Message, created from `s`. This\n * produces hash corresponding to the one signed with the\n * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n * JSON-RPC method as part of EIP-191.\n *\n * See {recover}.\n */\n function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {\n return keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n\", Strings.toString(s.length), s));\n }\n\n /**\n * @dev Returns an Ethereum Signed Typed Data, created from a\n * `domainSeparator` and a `structHash`. This produces hash corresponding\n * to the one signed with the\n * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]\n * JSON-RPC method as part of EIP-712.\n *\n * See {recover}.\n */\n function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {\n return keccak256(abi.encodePacked(\"\\x19\\x01\", domainSeparator, structHash));\n }\n}\n"
},
"contracts/structs/SignatureStatus.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nstruct SignatureStatus {\n bool isSalted;\n bool isVerified;\n address signer;\n bytes32 saltedHash;\n}"
},
"contracts/utils/RejectEther.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\n/**\n * @title A base contract that may be inherited in order to protect a contract from having its fallback function \n * invoked and to block the receipt of ETH by a contract.\n * @author Nathan Gang\n * @notice This contract bestows on inheritors the ability to block ETH transfers into the contract\n * @dev ETH may still be forced into the contract - it is impossible to block certain attacks, but this protects from accidental ETH deposits\n */\n // For more info, see: \"https://medium.com/@alexsherbuck/two-ways-to-force-ether-into-a-contract-1543c1311c56\"\nabstract contract RejectEther { \n\n /**\n * @dev For most contracts, it is safest to explicitly restrict the use of the fallback function\n * This would generally be invoked if sending ETH to this contract with a 'data' value provided\n */\n fallback() external payable { \n revert(\"Fallback function not permitted\");\n }\n\n /**\n * @dev This is the standard path where ETH would land if sending ETH to this contract without a 'data' value\n * In our case, we don't want our contract to receive ETH, so we restrict it here\n */\n receive() external payable {\n revert(\"Receiving ETH not permitted\");\n } \n}"
},
"contracts/interfaces/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `recipient`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address recipient, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `sender` to `recipient` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n}"
},
"contracts/libraries/Clones.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\n/**\n * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for\n * deploying minimal proxy contracts, also known as \"clones\".\n *\n * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies\n * > a minimal bytecode implementation that delegates all calls to a known, fixed address.\n *\n * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`\n * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the\n * deterministic method.\n *\n */\nlibrary Clones {\n /**\n * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.\n *\n * This function uses the create opcode, which should never revert.\n */\n function clone(address implementation) internal returns (address instance) {\n assembly {\n let ptr := mload(0x40)\n mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)\n mstore(add(ptr, 0x14), shl(0x60, implementation))\n mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)\n instance := create(0, ptr, 0x37)\n }\n require(instance != address(0), \"ERC1167: create failed\");\n }\n\n /**\n * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.\n *\n * This function uses the create2 opcode and a `salt` to deterministically deploy\n * the clone. Using the same `implementation` and `salt` multiple time will revert, since\n * the clones cannot be deployed twice at the same address.\n */\n function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {\n assembly {\n let ptr := mload(0x40)\n mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)\n mstore(add(ptr, 0x14), shl(0x60, implementation))\n mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)\n instance := create2(0, ptr, 0x37, salt)\n }\n require(instance != address(0), \"ERC1167: create2 failed\");\n }\n\n /**\n * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.\n */\n function predictDeterministicAddress(\n address implementation,\n bytes32 salt,\n address deployer\n ) internal pure returns (address predicted) {\n assembly {\n let ptr := mload(0x40)\n mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)\n mstore(add(ptr, 0x14), shl(0x60, implementation))\n mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000)\n mstore(add(ptr, 0x38), shl(0x60, deployer))\n mstore(add(ptr, 0x4c), salt)\n mstore(add(ptr, 0x6c), keccak256(ptr, 0x37))\n predicted := keccak256(add(ptr, 0x37), 0x55)\n }\n }\n\n /**\n * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.\n */\n function predictDeterministicAddress(address implementation, bytes32 salt)\n internal\n view\n returns (address predicted)\n {\n return predictDeterministicAddress(implementation, salt, address(this));\n }\n}"
},
"contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be payed in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}"
},
"contracts/interfaces/ICloneablePaymentSplitter.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./IERC165.sol\";\nimport \"../libraries/SafeERC20.sol\";\n\ninterface ICloneablePaymentSplitter is IERC165 {\n \n event PayeeAdded(address account, uint256 shares);\n event PaymentReleased(address to, uint256 amount);\n event ERC20PaymentReleased(IERC20 indexed token, address to, uint256 amount);\n event PaymentReceived(address from, uint256 amount);\n \n function initialize(address[] calldata payees, uint256[] calldata shares_) external; \n function totalShares() external view returns (uint256); \n function totalReleased() external view returns (uint256);\n function totalReleased(IERC20 token) external view returns (uint256);\n function shares(address account) external view returns (uint256); \n function released(address account) external view returns (uint256);\n function released(IERC20 token, address account) external view returns (uint256);\n function payee(uint256 index) external view returns (address); \n function release(address payable account) external;\n function release(IERC20 token, address account) external;\n function pendingPayment(address account) external view returns (uint256);\n function pendingPayment(IERC20 token, address account) external view returns (uint256);\n}\n"
},
"contracts/structs/RoyaltyRecipient.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nstruct RoyaltyRecipient {\n bool isPaymentSplitter; // 1 byte\n uint16 bips; // 2 bytes\n address recipient; // 20 bytes\n}"
},
"contracts/libraries/SafeERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"../interfaces/IERC20.sol\";\nimport \"./Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n using Address for address;\n\n function safeTransfer(\n IERC20 token,\n address to,\n uint256 value\n ) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n }\n\n function safeTransferFrom(\n IERC20 token,\n address from,\n address to,\n uint256 value\n ) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n }\n\n /**\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n * @param token The token targeted by the call.\n * @param data The call data (encoded using abi.encode or one of its variants).\n */\n function _callOptionalReturn(IERC20 token, bytes memory data) private {\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that\n // the target address contains contract code and also asserts for success in the low-level call.\n\n bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n if (returndata.length > 0) {\n // Return data is optional\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n }\n }\n}\n"
}
},
"settings": {
"optimizer": {
"enabled": true,
"runs": 1500
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"libraries": {}
}
} |