ZZTest2 (ZT2)
Overview
TokenID
1
Total Transfers
-
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract
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Contract Source Code Verified (Exact Match)
Contract Name:
PaperSappy
Compiler Version
v0.8.24+commit.e11b9ed9
ZkSolc Version
v1.5.7
Optimization Enabled:
Yes with Mode 3
Other Settings:
cancun EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
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import "./access/OwnableBasic.sol"; import "./erc721c/ERC721C.sol"; import "./interfaces/IContractMetadata.sol"; import "./minting/AirdropMint.sol"; import "./programmable-royalties/BasicRoyalties.sol"; /** * @title PaperSappy * @author ZanZai. * @notice Extension of ERC721C that adds basic royalties support. * @dev Pixl is going to 16$60. */ contract PaperSappy is OwnableBasic, ERC721C, BasicRoyalties, IContractMetadata { uint256 internal _nextTokenId; // Base URI string internal _metadataURI = ""; /// @notice Returns the contract metadata URI. string public override contractURI; constructor() ERC721OpenZeppelin("ZZTest2", "ZT2") BasicRoyalties(0x1e90E7404c8cA3333D86bC81D586449a99a5791A, 50) { setTransferValidator(0x3203c3f64312AF9344e42EF8Aa45B97C9DFE4594); } function supportsInterface( bytes4 interfaceId ) public view virtual override(ERC721C, ERC2981) returns (bool) { return ERC721C.supportsInterface(interfaceId) || ERC2981.supportsInterface(interfaceId); } function mintBatch(uint256 count) external onlyOwner { _requireCallerIsContractOwner(); uint256 tokenId = _nextTokenId; uint256 endTokenId = _nextTokenId = tokenId + count; for (; tokenId < endTokenId; ++tokenId) { _safeMint(msg.sender, tokenId); } } function safeMint(address to, uint256 tokenId) external { _safeMint(to, tokenId); } function burn(uint256 tokenId) external { _burn(tokenId); } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overridden in child contracts. */ function _baseURI() internal view virtual override returns (string memory) { return _metadataURI; } function setBaseURI(string memory _baseUri) external { _requireCallerIsContractOwner(); _setBaseURI(_baseUri); } function _setBaseURI(string memory _baseUri) internal virtual { _metadataURI = _baseUri; } function setContractURI(string memory _uri) external override { _requireCallerIsContractOwner(); _setupContractURI(_uri); } /// @dev Lets a contract admin set the URI for contract-level metadata. function _setupContractURI(string memory _uri) internal { string memory prevURI = contractURI; contractURI = _uri; emit ContractURIUpdated(prevURI, _uri); } function setDefaultRoyalty(address receiver, uint96 feeNumerator) public { _requireCallerIsContractOwner(); _setDefaultRoyalty(receiver, feeNumerator); } function setTokenRoyalty( uint256 tokenId, address receiver, uint96 feeNumerator ) public { _requireCallerIsContractOwner(); _setTokenRoyalty(tokenId, receiver, feeNumerator); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "./OwnablePermissions.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; abstract contract OwnableBasic is OwnablePermissions, Ownable { function _requireCallerIsContractOwner() internal view virtual override { _checkOwner(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../utils/AutomaticValidatorTransferApproval.sol"; import "../utils/CreatorTokenBase.sol"; import "../token/erc721/ERC721OpenZeppelin.sol"; import "../interfaces/ITransferValidatorSetTokenType.sol"; import {TOKEN_TYPE_ERC721} from "@limitbreak/permit-c/Constants.sol"; /** * @title ERC721C * @author Limit Break, Inc. * @notice Extends OpenZeppelin's ERC721 implementation with Creator Token functionality, which * allows the contract owner to update the transfer validation logic by managing a security policy in * an external transfer validation security policy registry. See {CreatorTokenTransferValidator}. */ abstract contract ERC721C is ERC721OpenZeppelin, CreatorTokenBase, AutomaticValidatorTransferApproval { /** * @notice Overrides behavior of isApprovedFor all such that if an operator is not explicitly approved * for all, the contract owner can optionally auto-approve the 721-C transfer validator for transfers. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool isApproved) { isApproved = super.isApprovedForAll(owner, operator); if (!isApproved) { if (autoApproveTransfersFromValidator) { isApproved = operator == address(getTransferValidator()); } } } /** * @notice Indicates whether the contract implements the specified interface. * @dev Overrides supportsInterface in ERC165. * @param interfaceId The interface id * @return true if the contract implements the specified interface, false otherwise */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(ICreatorToken).interfaceId || interfaceId == type(ICreatorTokenLegacy).interfaceId || super.supportsInterface(interfaceId); } /** * @notice Returns the function selector for the transfer validator's validation function to be called * @notice for transaction simulation. */ function getTransferValidationFunction() external pure returns (bytes4 functionSignature, bool isViewFunction) { functionSignature = bytes4(keccak256("validateTransfer(address,address,address,uint256)")); isViewFunction = true; } /// @dev Ties the open-zeppelin _beforeTokenTransfer hook to more granular transfer validation logic function _beforeTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual override { for (uint256 i = 0; i < batchSize;) { _validateBeforeTransfer(from, to, firstTokenId + i); unchecked { ++i; } } } /// @dev Ties the open-zeppelin _afterTokenTransfer hook to more granular transfer validation logic function _afterTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual override { for (uint256 i = 0; i < batchSize;) { _validateAfterTransfer(from, to, firstTokenId + i); unchecked { ++i; } } } function _tokenType() internal pure override returns(uint16) { return uint16(TOKEN_TYPE_ERC721); } } /** * @title ERC721CInitializable * @author Limit Break, Inc. * @notice Initializable implementation of ERC721C to allow for EIP-1167 proxy clones. */ abstract contract ERC721CInitializable is ERC721OpenZeppelinInitializable, CreatorTokenBase, AutomaticValidatorTransferApproval { function initializeERC721(string memory name_, string memory symbol_) public override { super.initializeERC721(name_, symbol_); _emitDefaultTransferValidator(); _registerTokenType(getTransferValidator()); } /** * @notice Overrides behavior of isApprovedFor all such that if an operator is not explicitly approved * for all, the contract owner can optionally auto-approve the 721-C transfer validator for transfers. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool isApproved) { isApproved = super.isApprovedForAll(owner, operator); if (!isApproved) { if (autoApproveTransfersFromValidator) { isApproved = operator == address(getTransferValidator()); } } } /** * @notice Indicates whether the contract implements the specified interface. * @dev Overrides supportsInterface in ERC165. * @param interfaceId The interface id * @return true if the contract implements the specified interface, false otherwise */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(ICreatorToken).interfaceId || interfaceId == type(ICreatorTokenLegacy).interfaceId || super.supportsInterface(interfaceId); } /** * @notice Returns the function selector for the transfer validator's validation function to be called * @notice for transaction simulation. */ function getTransferValidationFunction() external pure returns (bytes4 functionSignature, bool isViewFunction) { functionSignature = bytes4(keccak256("validateTransfer(address,address,address,uint256)")); isViewFunction = true; } /// @dev Ties the open-zeppelin _beforeTokenTransfer hook to more granular transfer validation logic function _beforeTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual override { for (uint256 i = 0; i < batchSize;) { _validateBeforeTransfer(from, to, firstTokenId + i); unchecked { ++i; } } } /// @dev Ties the open-zeppelin _afterTokenTransfer hook to more granular transfer validation logic function _afterTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual override { for (uint256 i = 0; i < batchSize;) { _validateAfterTransfer(from, to, firstTokenId + i); unchecked { ++i; } } } function _tokenType() internal pure override returns(uint16) { return uint16(TOKEN_TYPE_ERC721); } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.4; /// @author thirdweb /** * `ContractMetadata` is a contract extension for any base contracts. It lets you set a metadata URI * for you contract. * * Additionally, `ContractMetadata` is necessary for NFT contracts that want royalties to get distributed on OpenSea. */ interface IContractMetadata { /// @dev Returns the metadata URI of the contract. function contractURI() external view returns (string memory); /** * @dev Sets contract URI for the storefront-level metadata of the contract. * Only module admin can call this function. */ function setContractURI(string calldata _uri) external; /// @dev Emitted when the contract URI is updated. event ContractURIUpdated(string prevURI, string newURI); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "./MaxSupply.sol"; /** * @title AirdropMintBase * @author Limit Break, Inc. * @notice Base functionality of a contract mix-in that may optionally be used with extend ERC-721 tokens with airdrop minting capabilities. * @dev Inheriting contracts must implement `_mintToken`. */ abstract contract AirdropMintBase is MaxSupplyBase { error AirdropMint__AirdropBatchSizeMustBeGreaterThanZero(); error AirdropMint__CannotMintToZeroAddress(); error AirdropMint__MaxAirdropSupplyCannotBeSetToMaxUint256(); error AirdropMint__MaxAirdropSupplyCannotBeSetToZero(); error AirdropMint__MaxAirdropSupplyExceeded(); /// @dev The current amount of tokens mintable via airdrop. uint256 private _remainingAirdropSupply; /// @notice Owner bulk mint to airdrop. /// Throws if length of `to` array is zero. /// Throws if minting batch would exceed the max supply. function airdropMint(address[] calldata to) external { _requireCallerIsContractOwner(); uint256 batchSize = to.length; if(batchSize == 0) { revert AirdropMint__AirdropBatchSizeMustBeGreaterThanZero(); } uint256 currentMintedSupply = mintedSupply(); if(batchSize > _remainingAirdropSupply) { revert AirdropMint__MaxAirdropSupplyExceeded(); } _requireLessThanMaxSupply(currentMintedSupply + batchSize); unchecked { uint256 tokenIdToMint = currentMintedSupply + 1; _remainingAirdropSupply -= batchSize; _advanceNextTokenIdCounter(batchSize); for(uint256 i = 0; i < batchSize; ++i) { address recipient = to[i]; if(recipient == address(0)) { revert AirdropMint__CannotMintToZeroAddress(); } _mintToken(to[i], tokenIdToMint + i); } } } /// @notice Returns the remaining amount of tokens mintable via airdrop function remainingAirdropSupply() public view returns (uint256) { return _remainingAirdropSupply; } function _setMaxAirdropSupply(uint256 maxAirdropMints_) internal { if(maxAirdropMints_ == 0) { revert AirdropMint__MaxAirdropSupplyCannotBeSetToZero(); } if(maxAirdropMints_ == type(uint256).max) { revert AirdropMint__MaxAirdropSupplyCannotBeSetToMaxUint256(); } _remainingAirdropSupply = maxAirdropMints_; _initializeNextTokenIdCounter(); } } /** * @title AirdropMint * @author Limit Break, Inc. * @notice Constructable AirdropMint Contract implementation. */ abstract contract AirdropMint is AirdropMintBase, MaxSupply { constructor(uint256 maxAirdropMints_) { _setMaxAirdropSupply(maxAirdropMints_); } function maxSupply() public view override(MaxSupplyBase, MaxSupply) returns (uint256) { return _maxSupplyImmutable; } } /** * @title AirdropMintInitializable * @author Limit Break, Inc. * @notice Initializable AirdropMint Contract implementation to allow for EIP-1167 clones. */ abstract contract AirdropMintInitializable is AirdropMintBase, MaxSupplyInitializable { error AirdropMintInitializable__MaxAirdropSupplyAlreadyInitialized(); /// @dev Flag indicating that the airdrop max supply has been initialized. bool private _airdropSupplyInitialized; function initializeMaxAirdropSupply(uint256 maxAirdropMints_) public { _requireCallerIsContractOwner(); if(_airdropSupplyInitialized) { revert AirdropMintInitializable__MaxAirdropSupplyAlreadyInitialized(); } _airdropSupplyInitialized = true; _setMaxAirdropSupply(maxAirdropMints_); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@openzeppelin/contracts/token/common/ERC2981.sol"; /** * @title BasicRoyaltiesBase * @author Limit Break, Inc. * @dev Base functionality of an NFT mix-in contract implementing the most basic form of programmable royalties. */ abstract contract BasicRoyaltiesBase is ERC2981 { event DefaultRoyaltySet(address indexed receiver, uint96 feeNumerator); event TokenRoyaltySet(uint256 indexed tokenId, address indexed receiver, uint96 feeNumerator); function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual override { super._setDefaultRoyalty(receiver, feeNumerator); emit DefaultRoyaltySet(receiver, feeNumerator); } function _setTokenRoyalty(uint256 tokenId, address receiver, uint96 feeNumerator) internal virtual override { super._setTokenRoyalty(tokenId, receiver, feeNumerator); emit TokenRoyaltySet(tokenId, receiver, feeNumerator); } } /** * @title BasicRoyalties * @author Limit Break, Inc. * @notice Constructable BasicRoyalties Contract implementation. */ abstract contract BasicRoyalties is BasicRoyaltiesBase { constructor(address receiver, uint96 feeNumerator) { _setDefaultRoyalty(receiver, feeNumerator); } } /** * @title BasicRoyaltiesInitializable * @author Limit Break, Inc. * @notice Initializable BasicRoyalties Contract implementation to allow for EIP-1167 clones. */ abstract contract BasicRoyaltiesInitializable is BasicRoyaltiesBase {}
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@openzeppelin/contracts/utils/Context.sol"; abstract contract OwnablePermissions is Context { function _requireCallerIsContractOwner() internal view virtual; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../access/OwnablePermissions.sol"; /** * @title AutomaticValidatorTransferApproval * @author Limit Break, Inc. * @notice Base contract mix-in that provides boilerplate code giving the contract owner the * option to automatically approve a 721-C transfer validator implementation for transfers. */ abstract contract AutomaticValidatorTransferApproval is OwnablePermissions { /// @dev Emitted when the automatic approval flag is modified by the creator. event AutomaticApprovalOfTransferValidatorSet(bool autoApproved); /// @dev If true, the collection's transfer validator is automatically approved to transfer holder's tokens. bool public autoApproveTransfersFromValidator; /** * @notice Sets if the transfer validator is automatically approved as an operator for all token owners. * * @dev Throws when the caller is not the contract owner. * * @param autoApprove If true, the collection's transfer validator will be automatically approved to * transfer holder's tokens. */ function setAutomaticApprovalOfTransfersFromValidator(bool autoApprove) external { _requireCallerIsContractOwner(); autoApproveTransfersFromValidator = autoApprove; emit AutomaticApprovalOfTransferValidatorSet(autoApprove); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../access/OwnablePermissions.sol"; import "../interfaces/ICreatorToken.sol"; import "../interfaces/ICreatorTokenLegacy.sol"; import "../interfaces/ITransferValidator.sol"; import "./TransferValidation.sol"; import "../interfaces/ITransferValidatorSetTokenType.sol"; /** * @title CreatorTokenBase * @author Limit Break, Inc. * @notice CreatorTokenBaseV3 is an abstract contract that provides basic functionality for managing token * transfer policies through an implementation of ICreatorTokenTransferValidator/ICreatorTokenTransferValidatorV2/ICreatorTokenTransferValidatorV3. * This contract is intended to be used as a base for creator-specific token contracts, enabling customizable transfer * restrictions and security policies. * * <h4>Features:</h4> * <ul>Ownable: This contract can have an owner who can set and update the transfer validator.</ul> * <ul>TransferValidation: Implements the basic token transfer validation interface.</ul> * * <h4>Benefits:</h4> * <ul>Provides a flexible and modular way to implement custom token transfer restrictions and security policies.</ul> * <ul>Allows creators to enforce policies such as account and codehash blacklists, whitelists, and graylists.</ul> * <ul>Can be easily integrated into other token contracts as a base contract.</ul> * * <h4>Intended Usage:</h4> * <ul>Use as a base contract for creator token implementations that require advanced transfer restrictions and * security policies.</ul> * <ul>Set and update the ICreatorTokenTransferValidator implementation contract to enforce desired policies for the * creator token.</ul> * * <h4>Compatibility:</h4> * <ul>Backward and Forward Compatible - V1/V2/V3 Creator Token Base will work with V1/V2/V3 Transfer Validators.</ul> */ abstract contract CreatorTokenBase is OwnablePermissions, TransferValidation, ICreatorToken { /// @dev Thrown when setting a transfer validator address that has no deployed code. error CreatorTokenBase__InvalidTransferValidatorContract(); /// @dev The default transfer validator that will be used if no transfer validator has been set by the creator. address public constant DEFAULT_TRANSFER_VALIDATOR = address(0x721C002B0059009a671D00aD1700c9748146cd1B); /// @dev Used to determine if the default transfer validator is applied. /// @dev Set to true when the creator sets a transfer validator address. bool private isValidatorInitialized; /// @dev Address of the transfer validator to apply to transactions. address private transferValidator; constructor() { _emitDefaultTransferValidator(); _registerTokenType(DEFAULT_TRANSFER_VALIDATOR); } /** * @notice Sets the transfer validator for the token contract. * * @dev Throws when provided validator contract is not the zero address and does not have code. * @dev Throws when the caller is not the contract owner. * * @dev <h4>Postconditions:</h4> * 1. The transferValidator address is updated. * 2. The `TransferValidatorUpdated` event is emitted. * * @param transferValidator_ The address of the transfer validator contract. */ function setTransferValidator(address transferValidator_) public { _requireCallerIsContractOwner(); bool isValidTransferValidator = transferValidator_.code.length > 0; if(transferValidator_ != address(0) && !isValidTransferValidator) { revert CreatorTokenBase__InvalidTransferValidatorContract(); } emit TransferValidatorUpdated(address(getTransferValidator()), transferValidator_); isValidatorInitialized = true; transferValidator = transferValidator_; _registerTokenType(transferValidator_); } /** * @notice Returns the transfer validator contract address for this token contract. */ function getTransferValidator() public view override returns (address validator) { validator = transferValidator; if (validator == address(0)) { if (!isValidatorInitialized) { validator = DEFAULT_TRANSFER_VALIDATOR; } } } /** * @dev Pre-validates a token transfer, reverting if the transfer is not allowed by this token's security policy. * Inheriting contracts are responsible for overriding the _beforeTokenTransfer function, or its equivalent * and calling _validateBeforeTransfer so that checks can be properly applied during token transfers. * * @dev Be aware that if the msg.sender is the transfer validator, the transfer is automatically permitted, as the * transfer validator is expected to pre-validate the transfer. * * @dev Throws when the transfer doesn't comply with the collection's transfer policy, if the transferValidator is * set to a non-zero address. * * @param caller The address of the caller. * @param from The address of the sender. * @param to The address of the receiver. * @param tokenId The token id being transferred. */ function _preValidateTransfer( address caller, address from, address to, uint256 tokenId, uint256 /*value*/) internal virtual override { address validator = getTransferValidator(); if (validator != address(0)) { if (msg.sender == validator) { return; } ITransferValidator(validator).validateTransfer(caller, from, to, tokenId); } } /** * @dev Pre-validates a token transfer, reverting if the transfer is not allowed by this token's security policy. * Inheriting contracts are responsible for overriding the _beforeTokenTransfer function, or its equivalent * and calling _validateBeforeTransfer so that checks can be properly applied during token transfers. * * @dev Be aware that if the msg.sender is the transfer validator, the transfer is automatically permitted, as the * transfer validator is expected to pre-validate the transfer. * * @dev Used for ERC20 and ERC1155 token transfers which have an amount value to validate in the transfer validator. * @dev The `tokenId` for ERC20 tokens should be set to `0`. * * @dev Throws when the transfer doesn't comply with the collection's transfer policy, if the transferValidator is * set to a non-zero address. * * @param caller The address of the caller. * @param from The address of the sender. * @param to The address of the receiver. * @param tokenId The token id being transferred. * @param amount The amount of token being transferred. */ function _preValidateTransfer( address caller, address from, address to, uint256 tokenId, uint256 amount, uint256 /*value*/) internal virtual override { address validator = getTransferValidator(); if (validator != address(0)) { if (msg.sender == validator) { return; } ITransferValidator(validator).validateTransfer(caller, from, to, tokenId, amount); } } function _tokenType() internal virtual pure returns(uint16); function _registerTokenType(address validator) internal { if (validator != address(0)) { uint256 validatorCodeSize; assembly { validatorCodeSize := extcodesize(validator) } if(validatorCodeSize > 0) { try ITransferValidatorSetTokenType(validator).setTokenTypeOfCollection(address(this), _tokenType()) { } catch { } } } } /** * @dev Used during contract deployment for constructable and cloneable creator tokens * @dev to emit the `TransferValidatorUpdated` event signaling the validator for the contract * @dev is the default transfer validator. */ function _emitDefaultTransferValidator() internal { emit TransferValidatorUpdated(address(0), DEFAULT_TRANSFER_VALIDATOR); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../../access/OwnablePermissions.sol"; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; abstract contract ERC721OpenZeppelinBase is ERC721 { // Token name string internal _contractName; // Token symbol string internal _contractSymbol; function name() public view virtual override returns (string memory) { return _contractName; } function symbol() public view virtual override returns (string memory) { return _contractSymbol; } function _setNameAndSymbol(string memory name_, string memory symbol_) internal { _contractName = name_; _contractSymbol = symbol_; } } abstract contract ERC721OpenZeppelin is ERC721OpenZeppelinBase { constructor(string memory name_, string memory symbol_) ERC721("", "") { _setNameAndSymbol(name_, symbol_); } } abstract contract ERC721OpenZeppelinInitializable is OwnablePermissions, ERC721OpenZeppelinBase { error ERC721OpenZeppelinInitializable__AlreadyInitializedERC721(); /// @notice Specifies whether or not the contract is initialized bool private _erc721Initialized; /// @dev Initializes parameters of ERC721 tokens. /// These cannot be set in the constructor because this contract is optionally compatible with EIP-1167. function initializeERC721(string memory name_, string memory symbol_) public virtual { _requireCallerIsContractOwner(); if(_erc721Initialized) { revert ERC721OpenZeppelinInitializable__AlreadyInitializedERC721(); } _erc721Initialized = true; _setNameAndSymbol(name_, symbol_); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; interface ITransferValidatorSetTokenType { function setTokenTypeOfCollection(address collection, uint16 tokenType) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /// @dev Constant bytes32 value of 0x000...000 bytes32 constant ZERO_BYTES32 = bytes32(0); /// @dev Constant value of 0 uint256 constant ZERO = 0; /// @dev Constant value of 1 uint256 constant ONE = 1; /// @dev Constant value representing an open order in storage uint8 constant ORDER_STATE_OPEN = 0; /// @dev Constant value representing a filled order in storage uint8 constant ORDER_STATE_FILLED = 1; /// @dev Constant value representing a cancelled order in storage uint8 constant ORDER_STATE_CANCELLED = 2; /// @dev Constant value representing the ERC721 token type for signatures and transfer hooks uint256 constant TOKEN_TYPE_ERC721 = 721; /// @dev Constant value representing the ERC1155 token type for signatures and transfer hooks uint256 constant TOKEN_TYPE_ERC1155 = 1155; /// @dev Constant value representing the ERC20 token type for signatures and transfer hooks uint256 constant TOKEN_TYPE_ERC20 = 20; /// @dev Constant value to mask the upper bits of a signature that uses a packed `vs` value to extract `s` bytes32 constant UPPER_BIT_MASK = 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff; /// @dev EIP-712 typehash used for validating signature based stored approvals bytes32 constant UPDATE_APPROVAL_TYPEHASH = keccak256("UpdateApprovalBySignature(uint256 tokenType,address token,uint256 id,uint256 amount,uint256 nonce,address operator,uint256 approvalExpiration,uint256 sigDeadline,uint256 masterNonce)"); /// @dev EIP-712 typehash used for validating a single use permit without additional data bytes32 constant SINGLE_USE_PERMIT_TYPEHASH = keccak256("PermitTransferFrom(uint256 tokenType,address token,uint256 id,uint256 amount,uint256 nonce,address operator,uint256 expiration,uint256 masterNonce)"); /// @dev EIP-712 typehash used for validating a single use permit with additional data string constant SINGLE_USE_PERMIT_TRANSFER_ADVANCED_TYPEHASH_STUB = "PermitTransferFromWithAdditionalData(uint256 tokenType,address token,uint256 id,uint256 amount,uint256 nonce,address operator,uint256 expiration,uint256 masterNonce,"; /// @dev EIP-712 typehash used for validating an order permit that updates storage as it fills string constant PERMIT_ORDER_ADVANCED_TYPEHASH_STUB = "PermitOrderWithAdditionalData(uint256 tokenType,address token,uint256 id,uint256 amount,uint256 salt,address operator,uint256 expiration,uint256 masterNonce,"; /// @dev Pausable flag for stored approval transfers of ERC721 assets uint256 constant PAUSABLE_APPROVAL_TRANSFER_FROM_ERC721 = 1 << 0; /// @dev Pausable flag for stored approval transfers of ERC1155 assets uint256 constant PAUSABLE_APPROVAL_TRANSFER_FROM_ERC1155 = 1 << 1; /// @dev Pausable flag for stored approval transfers of ERC20 assets uint256 constant PAUSABLE_APPROVAL_TRANSFER_FROM_ERC20 = 1 << 2; /// @dev Pausable flag for single use permit transfers of ERC721 assets uint256 constant PAUSABLE_PERMITTED_TRANSFER_FROM_ERC721 = 1 << 3; /// @dev Pausable flag for single use permit transfers of ERC1155 assets uint256 constant PAUSABLE_PERMITTED_TRANSFER_FROM_ERC1155 = 1 << 4; /// @dev Pausable flag for single use permit transfers of ERC20 assets uint256 constant PAUSABLE_PERMITTED_TRANSFER_FROM_ERC20 = 1 << 5; /// @dev Pausable flag for order fill transfers of ERC1155 assets uint256 constant PAUSABLE_ORDER_TRANSFER_FROM_ERC1155 = 1 << 6; /// @dev Pausable flag for order fill transfers of ERC20 assets uint256 constant PAUSABLE_ORDER_TRANSFER_FROM_ERC20 = 1 << 7;
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../access/OwnablePermissions.sol"; import "./MintTokenBase.sol"; import "./SequentialMintBase.sol"; /** * @title MaxSupplyBase * @author Limit Break, Inc. * @notice In order to support multiple contracts with a global maximum supply, the max supply has been moved to this base contract. * @dev Inheriting contracts must implement `_mintToken`. */ abstract contract MaxSupplyBase is OwnablePermissions, MintTokenBase, SequentialMintBase { error MaxSupplyBase__CannotClaimMoreThanMaximumAmountOfOwnerMints(); error MaxSupplyBase__CannotMintToAddressZero(); error MaxSupplyBase__MaxSupplyCannotBeSetToMaxUint256(); error MaxSupplyBase__MaxSupplyExceeded(); error MaxSupplyBase__MintedQuantityMustBeGreaterThanZero(); /// @dev The global maximum supply for a contract. Inheriting contracts must reference this maximum supply in addition to any other /// @dev constraints they are looking to enforce. /// @dev If `_maxSupply` is set to zero, the global max supply will match the combined max allowable mints for each minting mix-in used. /// @dev If the `_maxSupply` is below the total sum of allowable mints, the `_maxSupply` will be prioritized. uint256 private _maxSupply; /// @dev The number of tokens remaining to mint via owner mint. /// @dev This can be used to guarantee minting out by allowing the owner to mint unclaimed supply after the public mint is completed. uint256 private _remainingOwnerMints; /// @dev Emitted when the maximum supply is initialized event MaxSupplyInitialized(uint256 maxSupply, uint256 maxOwnerMints); /// @notice Mints the specified quantity to the provided address /// /// Throws when the caller is not the owner /// Throws when provided quantity is zero /// Throws when provided address is address zero /// Throws if the quantity minted plus amount already minted exceeds the maximum amount mintable by the owner function ownerMint(address to, uint256 quantity) external { _requireCallerIsContractOwner(); if(to == address(0)) { revert MaxSupplyBase__CannotMintToAddressZero(); } if(quantity > _remainingOwnerMints) { revert MaxSupplyBase__CannotClaimMoreThanMaximumAmountOfOwnerMints(); } _requireLessThanMaxSupply(mintedSupply() + quantity); unchecked { _remainingOwnerMints -= quantity; } _mintBatch(to, quantity); } function maxSupply() public virtual view returns (uint256) { return _maxSupply; } function remainingOwnerMints() public view returns (uint256) { return _remainingOwnerMints; } function mintedSupply() public view returns (uint256) { return getNextTokenId() - 1; } function _setMaxSupplyAndOwnerMints(uint256 maxSupply_, uint256 maxOwnerMints_) internal { if(maxSupply_ == type(uint256).max) { revert MaxSupplyBase__MaxSupplyCannotBeSetToMaxUint256(); } _maxSupply = maxSupply_; _remainingOwnerMints = maxOwnerMints_; _initializeNextTokenIdCounter(); emit MaxSupplyInitialized(maxSupply_, maxOwnerMints_); } function _requireLessThanMaxSupply(uint256 supplyAfterMint) internal view { uint256 maxSupplyCache = maxSupply(); if (maxSupplyCache > 0) { if (supplyAfterMint > maxSupplyCache) { revert MaxSupplyBase__MaxSupplyExceeded(); } } } /// @dev Batch mints the specified quantity to the specified address /// Throws if quantity is zero /// Throws if `to` is a smart contract that does not implement IERC721 receiver function _mintBatch(address to, uint256 quantity) internal returns (uint256 startTokenId, uint256 endTokenId) { if(quantity == 0) { revert MaxSupplyBase__MintedQuantityMustBeGreaterThanZero(); } startTokenId = getNextTokenId(); unchecked { endTokenId = startTokenId + quantity - 1; _advanceNextTokenIdCounter(quantity); for(uint256 i = 0; i < quantity; ++i) { _mintToken(to, startTokenId + i); } } return (startTokenId, endTokenId); } } /** * @title MaxSupply * @author Limit Break, Inc. * @notice Constructable implementation of the MaxSupplyBase mixin. */ abstract contract MaxSupply is MaxSupplyBase { uint256 internal immutable _maxSupplyImmutable; constructor(uint256 maxSupply_, uint256 maxOwnerMints_) { _setMaxSupplyAndOwnerMints(maxSupply_, maxOwnerMints_); _maxSupplyImmutable = maxSupply_; } function maxSupply() public virtual view override returns (uint256) { return _maxSupplyImmutable; } } /** * @title MaxSupplyInitializable * @author Limit Break, Inc. * @notice Initializable implementation of the MaxSupplyBase mixin to allow for EIP-1167 clones. */ abstract contract MaxSupplyInitializable is MaxSupplyBase { error InitializableMaxSupplyBase__MaxSupplyAlreadyInitialized(); /// @dev Boolean value set during initialization to prevent reinitializing the value. bool private _maxSupplyInitialized; function initializeMaxSupply(uint256 maxSupply_, uint256 maxOwnerMints_) external { _requireCallerIsContractOwner(); if(_maxSupplyInitialized) { revert InitializableMaxSupplyBase__MaxSupplyAlreadyInitialized(); } _maxSupplyInitialized = true; _setMaxSupplyAndOwnerMints(maxSupply_, maxOwnerMints_); } function maxSupplyInitialized() public view returns (bool) { return _maxSupplyInitialized; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/common/ERC2981.sol) pragma solidity ^0.8.0; import "../../interfaces/IERC2981.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of the NFT Royalty Standard, a standardized way to retrieve royalty payment information. * * Royalty information can be specified globally for all token ids via {_setDefaultRoyalty}, and/or individually for * specific token ids via {_setTokenRoyalty}. The latter takes precedence over the first. * * Royalty is specified as a fraction of sale price. {_feeDenominator} is overridable but defaults to 10000, meaning the * fee is specified in basis points by default. * * IMPORTANT: ERC-2981 only specifies a way to signal royalty information and does not enforce its payment. See * https://eips.ethereum.org/EIPS/eip-2981#optional-royalty-payments[Rationale] in the EIP. Marketplaces are expected to * voluntarily pay royalties together with sales, but note that this standard is not yet widely supported. * * _Available since v4.5._ */ abstract contract ERC2981 is IERC2981, ERC165 { struct RoyaltyInfo { address receiver; uint96 royaltyFraction; } RoyaltyInfo private _defaultRoyaltyInfo; mapping(uint256 => RoyaltyInfo) private _tokenRoyaltyInfo; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) { return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId); } /** * @inheritdoc IERC2981 */ function royaltyInfo(uint256 _tokenId, uint256 _salePrice) public view virtual override returns (address, uint256) { RoyaltyInfo memory royalty = _tokenRoyaltyInfo[_tokenId]; if (royalty.receiver == address(0)) { royalty = _defaultRoyaltyInfo; } uint256 royaltyAmount = (_salePrice * royalty.royaltyFraction) / _feeDenominator(); return (royalty.receiver, royaltyAmount); } /** * @dev The denominator with which to interpret the fee set in {_setTokenRoyalty} and {_setDefaultRoyalty} as a * fraction of the sale price. Defaults to 10000 so fees are expressed in basis points, but may be customized by an * override. */ function _feeDenominator() internal pure virtual returns (uint96) { return 10000; } /** * @dev Sets the royalty information that all ids in this contract will default to. * * Requirements: * * - `receiver` cannot be the zero address. * - `feeNumerator` cannot be greater than the fee denominator. */ function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual { require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice"); require(receiver != address(0), "ERC2981: invalid receiver"); _defaultRoyaltyInfo = RoyaltyInfo(receiver, feeNumerator); } /** * @dev Removes default royalty information. */ function _deleteDefaultRoyalty() internal virtual { delete _defaultRoyaltyInfo; } /** * @dev Sets the royalty information for a specific token id, overriding the global default. * * Requirements: * * - `receiver` cannot be the zero address. * - `feeNumerator` cannot be greater than the fee denominator. */ function _setTokenRoyalty( uint256 tokenId, address receiver, uint96 feeNumerator ) internal virtual { require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice"); require(receiver != address(0), "ERC2981: Invalid parameters"); _tokenRoyaltyInfo[tokenId] = RoyaltyInfo(receiver, feeNumerator); } /** * @dev Resets royalty information for the token id back to the global default. */ function _resetTokenRoyalty(uint256 tokenId) internal virtual { delete _tokenRoyaltyInfo[tokenId]; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; interface ICreatorToken { event TransferValidatorUpdated(address oldValidator, address newValidator); function getTransferValidator() external view returns (address validator); function setTransferValidator(address validator) external; function getTransferValidationFunction() external view returns (bytes4 functionSignature, bool isViewFunction); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; interface ICreatorTokenLegacy { event TransferValidatorUpdated(address oldValidator, address newValidator); function getTransferValidator() external view returns (address validator); function setTransferValidator(address validator) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; interface ITransferValidator { function applyCollectionTransferPolicy(address caller, address from, address to) external view; function validateTransfer(address caller, address from, address to) external view; function validateTransfer(address caller, address from, address to, uint256 tokenId) external view; function validateTransfer(address caller, address from, address to, uint256 tokenId, uint256 amount) external; function beforeAuthorizedTransfer(address operator, address token, uint256 tokenId) external; function afterAuthorizedTransfer(address token, uint256 tokenId) external; function beforeAuthorizedTransfer(address operator, address token) external; function afterAuthorizedTransfer(address token) external; function beforeAuthorizedTransfer(address token, uint256 tokenId) external; function beforeAuthorizedTransferWithAmount(address token, uint256 tokenId, uint256 amount) external; function afterAuthorizedTransferWithAmount(address token, uint256 tokenId) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@openzeppelin/contracts/utils/Context.sol"; /** * @title TransferValidation * @author Limit Break, Inc. * @notice A mix-in that can be combined with ERC-721 contracts to provide more granular hooks. * Openzeppelin's ERC721 contract only provides hooks for before and after transfer. This allows * developers to validate or customize transfers within the context of a mint, a burn, or a transfer. */ abstract contract TransferValidation is Context { /// @dev Thrown when the from and to address are both the zero address. error ShouldNotMintToBurnAddress(); /*************************************************************************/ /* Transfers Without Amounts */ /*************************************************************************/ /// @dev Inheriting contracts should call this function in the _beforeTokenTransfer function to get more granular hooks. function _validateBeforeTransfer(address from, address to, uint256 tokenId) internal virtual { bool fromZeroAddress = from == address(0); bool toZeroAddress = to == address(0); if(fromZeroAddress && toZeroAddress) { revert ShouldNotMintToBurnAddress(); } else if(fromZeroAddress) { _preValidateMint(_msgSender(), to, tokenId, msg.value); } else if(toZeroAddress) { _preValidateBurn(_msgSender(), from, tokenId, msg.value); } else { _preValidateTransfer(_msgSender(), from, to, tokenId, msg.value); } } /// @dev Inheriting contracts should call this function in the _afterTokenTransfer function to get more granular hooks. function _validateAfterTransfer(address from, address to, uint256 tokenId) internal virtual { bool fromZeroAddress = from == address(0); bool toZeroAddress = to == address(0); if(fromZeroAddress && toZeroAddress) { revert ShouldNotMintToBurnAddress(); } else if(fromZeroAddress) { _postValidateMint(_msgSender(), to, tokenId, msg.value); } else if(toZeroAddress) { _postValidateBurn(_msgSender(), from, tokenId, msg.value); } else { _postValidateTransfer(_msgSender(), from, to, tokenId, msg.value); } } /// @dev Optional validation hook that fires before a mint function _preValidateMint(address caller, address to, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a mint function _postValidateMint(address caller, address to, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires before a burn function _preValidateBurn(address caller, address from, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a burn function _postValidateBurn(address caller, address from, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires before a transfer function _preValidateTransfer(address caller, address from, address to, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a transfer function _postValidateTransfer(address caller, address from, address to, uint256 tokenId, uint256 value) internal virtual {} /*************************************************************************/ /* Transfers With Amounts */ /*************************************************************************/ /// @dev Inheriting contracts should call this function in the _beforeTokenTransfer function to get more granular hooks. function _validateBeforeTransfer(address from, address to, uint256 tokenId, uint256 amount) internal virtual { bool fromZeroAddress = from == address(0); bool toZeroAddress = to == address(0); if(fromZeroAddress && toZeroAddress) { revert ShouldNotMintToBurnAddress(); } else if(fromZeroAddress) { _preValidateMint(_msgSender(), to, tokenId, amount, msg.value); } else if(toZeroAddress) { _preValidateBurn(_msgSender(), from, tokenId, amount, msg.value); } else { _preValidateTransfer(_msgSender(), from, to, tokenId, amount, msg.value); } } /// @dev Inheriting contracts should call this function in the _afterTokenTransfer function to get more granular hooks. function _validateAfterTransfer(address from, address to, uint256 tokenId, uint256 amount) internal virtual { bool fromZeroAddress = from == address(0); bool toZeroAddress = to == address(0); if(fromZeroAddress && toZeroAddress) { revert ShouldNotMintToBurnAddress(); } else if(fromZeroAddress) { _postValidateMint(_msgSender(), to, tokenId, amount, msg.value); } else if(toZeroAddress) { _postValidateBurn(_msgSender(), from, tokenId, amount, msg.value); } else { _postValidateTransfer(_msgSender(), from, to, tokenId, amount, msg.value); } } /// @dev Optional validation hook that fires before a mint function _preValidateMint(address caller, address to, uint256 tokenId, uint256 amount, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a mint function _postValidateMint(address caller, address to, uint256 tokenId, uint256 amount, uint256 value) internal virtual {} /// @dev Optional validation hook that fires before a burn function _preValidateBurn(address caller, address from, uint256 tokenId, uint256 amount, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a burn function _postValidateBurn(address caller, address from, uint256 tokenId, uint256 amount, uint256 value) internal virtual {} /// @dev Optional validation hook that fires before a transfer function _preValidateTransfer(address caller, address from, address to, uint256 tokenId, uint256 amount, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a transfer function _postValidateTransfer(address caller, address from, address to, uint256 tokenId, uint256 amount, uint256 value) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.2) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: address zero is not a valid owner"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _ownerOf(tokenId); require(owner != address(0), "ERC721: invalid token ID"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { _requireMinted(tokenId); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overridden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not token owner or approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { _requireMinted(tokenId); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved"); _safeTransfer(from, to, tokenId, data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist */ function _ownerOf(uint256 tokenId) internal view virtual returns (address) { return _owners[tokenId]; } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _ownerOf(tokenId) != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { address owner = ERC721.ownerOf(tokenId); return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId, 1); // Check that tokenId was not minted by `_beforeTokenTransfer` hook require(!_exists(tokenId), "ERC721: token already minted"); unchecked { // Will not overflow unless all 2**256 token ids are minted to the same owner. // Given that tokens are minted one by one, it is impossible in practice that // this ever happens. Might change if we allow batch minting. // The ERC fails to describe this case. _balances[to] += 1; } _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId, 1); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * This is an internal function that does not check if the sender is authorized to operate on the token. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId, 1); // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook owner = ERC721.ownerOf(tokenId); // Clear approvals delete _tokenApprovals[tokenId]; unchecked { // Cannot overflow, as that would require more tokens to be burned/transferred // out than the owner initially received through minting and transferring in. _balances[owner] -= 1; } delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), tokenId, 1); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId, 1); // Check that tokenId was not transferred by `_beforeTokenTransfer` hook require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); // Clear approvals from the previous owner delete _tokenApprovals[tokenId]; unchecked { // `_balances[from]` cannot overflow for the same reason as described in `_burn`: // `from`'s balance is the number of token held, which is at least one before the current // transfer. // `_balances[to]` could overflow in the conditions described in `_mint`. That would require // all 2**256 token ids to be minted, which in practice is impossible. _balances[from] -= 1; _balances[to] += 1; } _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId, 1); } /** * @dev Approve `to` to operate on `tokenId` * * Emits an {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits an {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Reverts if the `tokenId` has not been minted yet. */ function _requireMinted(uint256 tokenId) internal view virtual { require(_exists(tokenId), "ERC721: invalid token ID"); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { /// @solidity memory-safe-assembly assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`. * - When `from` is zero, the tokens will be minted for `to`. * - When `to` is zero, ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * - `batchSize` is non-zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual {} /** * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`. * - When `from` is zero, the tokens were minted for `to`. * - When `to` is zero, ``from``'s tokens were burned. * - `from` and `to` are never both zero. * - `batchSize` is non-zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual {} /** * @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override. * * WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant * being that for any address `a` the value returned by `balanceOf(a)` must be equal to the number of tokens such * that `ownerOf(tokenId)` is `a`. */ // solhint-disable-next-line func-name-mixedcase function __unsafe_increaseBalance(address account, uint256 amount) internal { _balances[account] += amount; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /** * @title MintTokenBase * @author Limit Break, Inc. * @dev Standard mint token interface for mixins to mint tokens. */ abstract contract MintTokenBase { /// @dev Inheriting contracts must implement the token minting logic - inheriting contract should use _mint, or something equivalent /// The minting function should throw if `to` is address(0) function _mintToken(address to, uint256 tokenId) internal virtual; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /** * @title SequentialMintBase * @author Limit Break, Inc. * @dev In order to support multiple sequential mint mix-ins in a single contract, the token id counter has been moved to this based contract. */ abstract contract SequentialMintBase { /// @dev The next token id that will be minted - if zero, the next minted token id will be 1 uint256 private nextTokenIdCounter; /// @dev Minting mixins must use this function to advance the next token id counter. function _initializeNextTokenIdCounter() internal { if(nextTokenIdCounter == 0) { nextTokenIdCounter = 1; } } /// @dev Minting mixins must use this function to advance the next token id counter. function _advanceNextTokenIdCounter(uint256 amount) internal { nextTokenIdCounter += amount; } /// @dev Returns the next token id counter value function getNextTokenId() public view returns (uint256) { return nextTokenIdCounter; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol) pragma solidity ^0.8.0; import "../utils/introspection/IERC165.sol"; /** * @dev Interface for the NFT Royalty Standard. * * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal * support for royalty payments across all NFT marketplaces and ecosystem participants. * * _Available since v4.5._ */ interface IERC2981 is IERC165 { /** * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of * exchange. The royalty amount is denominated and should be paid in that same unit of exchange. */ function royaltyInfo(uint256 tokenId, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must * understand this adds an external call which potentially creates a reentrancy vulnerability. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/Math.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10**64) { value /= 10**64; result += 64; } if (value >= 10**32) { value /= 10**32; result += 32; } if (value >= 10**16) { value /= 10**16; result += 16; } if (value >= 10**8) { value /= 10**8; result += 8; } if (value >= 10**4) { value /= 10**4; result += 4; } if (value >= 10**2) { value /= 10**2; result += 2; } if (value >= 10**1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0); } } }
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Contract Creation Code
9c4d535b0000000000000000000000000000000000000000000000000000000000000000010004857f58eb18b1e4288df77d24f734b54215ca4e2849693a75e4c1c885aa00000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000000
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