2268 lines
151 KiB
Solidity
2268 lines
151 KiB
Solidity
// File: @openzeppelin\contracts\utils\introspection\IERC165.sol
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// SPDX-License-Identifier: MIT
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// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
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pragma solidity ^0.8.0;
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/**
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* @dev Interface of the ERC165 standard, as defined in the
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* https://eips.ethereum.org/EIPS/eip-165[EIP].
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*
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* Implementers can declare support of contract interfaces, which can then be
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* queried by others ({ERC165Checker}).
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*
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* For an implementation, see {ERC165}.
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*/
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interface IERC165 {
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/**
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* @dev Returns true if this contract implements the interface defined by
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* `interfaceId`. See the corresponding
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* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
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* to learn more about how these ids are created.
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*
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* This function call must use less than 30 000 gas.
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*/
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function supportsInterface(bytes4 interfaceId) external view returns (bool);
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}
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// File: @openzeppelin\contracts\token\ERC721\IERC721.sol
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// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
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pragma solidity ^0.8.0;
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/**
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* @dev Required interface of an ERC721 compliant contract.
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*/
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interface IERC721 is IERC165 {
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/**
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* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
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*/
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event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
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/**
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* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
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*/
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event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
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/**
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* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
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*/
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event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
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/**
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* @dev Returns the number of tokens in ``owner``'s account.
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*/
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function balanceOf(address owner) external view returns (uint256 balance);
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/**
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* @dev Returns the owner of the `tokenId` token.
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*
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* Requirements:
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*
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* - `tokenId` must exist.
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*/
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function ownerOf(uint256 tokenId) external view returns (address owner);
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/**
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* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
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* are aware of the ERC721 protocol to prevent tokens from being forever locked.
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*
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* Requirements:
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*
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* - `from` cannot be the zero address.
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* - `to` cannot be the zero address.
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* - `tokenId` token must exist and be owned by `from`.
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* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
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* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
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*
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* Emits a {Transfer} event.
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*/
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function safeTransferFrom(
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address from,
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address to,
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uint256 tokenId
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) external;
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/**
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* @dev Transfers `tokenId` token from `from` to `to`.
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*
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* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
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*
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* Requirements:
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*
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* - `from` cannot be the zero address.
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* - `to` cannot be the zero address.
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* - `tokenId` token must be owned by `from`.
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* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
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*
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* Emits a {Transfer} event.
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*/
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function transferFrom(
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address from,
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address to,
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uint256 tokenId
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) external;
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/**
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* @dev Gives permission to `to` to transfer `tokenId` token to another account.
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* The approval is cleared when the token is transferred.
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*
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* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
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*
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* Requirements:
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*
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* - The caller must own the token or be an approved operator.
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* - `tokenId` must exist.
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*
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* Emits an {Approval} event.
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*/
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function approve(address to, uint256 tokenId) external;
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/**
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* @dev Returns the account approved for `tokenId` token.
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*
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* Requirements:
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*
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* - `tokenId` must exist.
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*/
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function getApproved(uint256 tokenId) external view returns (address operator);
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/**
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* @dev Approve or remove `operator` as an operator for the caller.
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* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
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*
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* Requirements:
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*
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* - The `operator` cannot be the caller.
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*
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* Emits an {ApprovalForAll} event.
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*/
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function setApprovalForAll(address operator, bool _approved) external;
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/**
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* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
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*
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* See {setApprovalForAll}
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*/
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function isApprovedForAll(address owner, address operator) external view returns (bool);
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/**
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* @dev Safely transfers `tokenId` token from `from` to `to`.
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*
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* Requirements:
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*
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* - `from` cannot be the zero address.
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* - `to` cannot be the zero address.
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* - `tokenId` token must exist and be owned by `from`.
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* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
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* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
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*
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* Emits a {Transfer} event.
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*/
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function safeTransferFrom(
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address from,
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address to,
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uint256 tokenId,
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bytes calldata data
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) external;
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}
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// File: @openzeppelin\contracts\token\ERC721\IERC721Receiver.sol
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// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
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pragma solidity ^0.8.0;
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/**
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* @title ERC721 token receiver interface
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* @dev Interface for any contract that wants to support safeTransfers
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* from ERC721 asset contracts.
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*/
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interface IERC721Receiver {
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/**
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* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
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* by `operator` from `from`, this function is called.
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*
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* It must return its Solidity selector to confirm the token transfer.
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* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
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*
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* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
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*/
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function onERC721Received(
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address operator,
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address from,
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uint256 tokenId,
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bytes calldata data
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) external returns (bytes4);
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}
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// File: @openzeppelin\contracts\token\ERC721\extensions\IERC721Metadata.sol
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// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
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pragma solidity ^0.8.0;
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/**
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* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
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* @dev See https://eips.ethereum.org/EIPS/eip-721
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*/
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interface IERC721Metadata is IERC721 {
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/**
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* @dev Returns the token collection name.
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*/
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function name() external view returns (string memory);
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/**
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* @dev Returns the token collection symbol.
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*/
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function symbol() external view returns (string memory);
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/**
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* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
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*/
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function tokenURI(uint256 tokenId) external view returns (string memory);
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}
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// File: @openzeppelin\contracts\utils\Address.sol
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// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
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pragma solidity ^0.8.1;
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/**
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* @dev Collection of functions related to the address type
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*/
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library Address {
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/**
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* @dev Returns true if `account` is a contract.
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*
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* [IMPORTANT]
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* ====
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* It is unsafe to assume that an address for which this function returns
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* false is an externally-owned account (EOA) and not a contract.
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*
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* Among others, `isContract` will return false for the following
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* types of addresses:
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*
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* - an externally-owned account
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* - a contract in construction
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* - an address where a contract will be created
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* - an address where a contract lived, but was destroyed
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* ====
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*
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* [IMPORTANT]
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* ====
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* You shouldn't rely on `isContract` to protect against flash loan attacks!
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*
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* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
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* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
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* constructor.
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* ====
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*/
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function isContract(address account) internal view returns (bool) {
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// This method relies on extcodesize/address.code.length, which returns 0
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// for contracts in construction, since the code is only stored at the end
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// of the constructor execution.
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return account.code.length > 0;
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}
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/**
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* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
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* `recipient`, forwarding all available gas and reverting on errors.
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*
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* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
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* of certain opcodes, possibly making contracts go over the 2300 gas limit
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* imposed by `transfer`, making them unable to receive funds via
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* `transfer`. {sendValue} removes this limitation.
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*
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* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
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*
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* IMPORTANT: because control is transferred to `recipient`, care must be
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* taken to not create reentrancy vulnerabilities. Consider using
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* {ReentrancyGuard} or the
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* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
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*/
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function sendValue(address payable recipient, uint256 amount) internal {
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require(address(this).balance >= amount, "Address: insufficient balance");
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(bool success, ) = recipient.call{value: amount}("");
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require(success, "Address: unable to send value, recipient may have reverted");
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}
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/**
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* @dev Performs a Solidity function call using a low level `call`. A
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* plain `call` is an unsafe replacement for a function call: use this
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* function instead.
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*
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* If `target` reverts with a revert reason, it is bubbled up by this
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* function (like regular Solidity function calls).
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*
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* Returns the raw returned data. To convert to the expected return value,
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* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
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*
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* Requirements:
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*
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* - `target` must be a contract.
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* - calling `target` with `data` must not revert.
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*
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* _Available since v3.1._
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*/
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function functionCall(address target, bytes memory data) internal returns (bytes memory) {
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return functionCall(target, data, "Address: low-level call failed");
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}
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/**
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* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
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* `errorMessage` as a fallback revert reason when `target` reverts.
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*
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* _Available since v3.1._
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*/
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function functionCall(
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address target,
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bytes memory data,
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string memory errorMessage
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) internal returns (bytes memory) {
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return functionCallWithValue(target, data, 0, errorMessage);
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}
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/**
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* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
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* but also transferring `value` wei to `target`.
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*
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* Requirements:
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*
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* - the calling contract must have an ETH balance of at least `value`.
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* - the called Solidity function must be `payable`.
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*
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* _Available since v3.1._
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*/
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function functionCallWithValue(
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address target,
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bytes memory data,
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uint256 value
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) internal returns (bytes memory) {
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return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
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}
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/**
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* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
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* with `errorMessage` as a fallback revert reason when `target` reverts.
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*
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* _Available since v3.1._
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*/
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function functionCallWithValue(
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address target,
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bytes memory data,
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uint256 value,
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string memory errorMessage
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) internal returns (bytes memory) {
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require(address(this).balance >= value, "Address: insufficient balance for call");
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require(isContract(target), "Address: call to non-contract");
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(bool success, bytes memory returndata) = target.call{value: value}(data);
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return verifyCallResult(success, returndata, errorMessage);
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}
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|
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/**
|
||
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
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||
* but performing a static call.
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||
*
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* _Available since v3.3._
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*/
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function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
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return functionStaticCall(target, data, "Address: low-level static call failed");
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}
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|
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/**
|
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* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
|
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* but performing a static call.
|
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*
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* _Available since v3.3._
|
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*/
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function functionStaticCall(
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address target,
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bytes memory data,
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string memory errorMessage
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) internal view returns (bytes memory) {
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require(isContract(target), "Address: static call to non-contract");
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|
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(bool success, bytes memory returndata) = target.staticcall(data);
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return verifyCallResult(success, returndata, errorMessage);
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}
|
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|
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/**
|
||
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
|
||
* but performing a delegate call.
|
||
*
|
||
* _Available since v3.4._
|
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*/
|
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function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
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||
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._
|
||
*/
|
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function functionDelegateCall(
|
||
address target,
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bytes memory data,
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string memory errorMessage
|
||
) internal returns (bytes memory) {
|
||
require(isContract(target), "Address: delegate call to non-contract");
|
||
|
||
(bool success, bytes memory returndata) = target.delegatecall(data);
|
||
return verifyCallResult(success, returndata, errorMessage);
|
||
}
|
||
|
||
/**
|
||
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
|
||
* revert reason using the provided one.
|
||
*
|
||
* _Available since v4.3._
|
||
*/
|
||
function verifyCallResult(
|
||
bool success,
|
||
bytes memory returndata,
|
||
string memory errorMessage
|
||
) internal pure returns (bytes memory) {
|
||
if (success) {
|
||
return returndata;
|
||
} else {
|
||
// Look for revert reason and bubble it up if present
|
||
if (returndata.length > 0) {
|
||
// The easiest way to bubble the revert reason is using memory via assembly
|
||
|
||
assembly {
|
||
let returndata_size := mload(returndata)
|
||
revert(add(32, returndata), returndata_size)
|
||
}
|
||
} else {
|
||
revert(errorMessage);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// File: @openzeppelin\contracts\utils\Context.sol
|
||
|
||
// 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;
|
||
}
|
||
}
|
||
|
||
// File: @openzeppelin\contracts\utils\Strings.sol
|
||
|
||
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
|
||
|
||
pragma solidity ^0.8.0;
|
||
|
||
/**
|
||
* @dev String operations.
|
||
*/
|
||
library Strings {
|
||
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
|
||
|
||
/**
|
||
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
|
||
*/
|
||
function toString(uint256 value) internal pure returns (string memory) {
|
||
// Inspired by OraclizeAPI's implementation - MIT licence
|
||
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
|
||
|
||
if (value == 0) {
|
||
return "0";
|
||
}
|
||
uint256 temp = value;
|
||
uint256 digits;
|
||
while (temp != 0) {
|
||
digits++;
|
||
temp /= 10;
|
||
}
|
||
bytes memory buffer = new bytes(digits);
|
||
while (value != 0) {
|
||
digits -= 1;
|
||
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
|
||
value /= 10;
|
||
}
|
||
return string(buffer);
|
||
}
|
||
|
||
/**
|
||
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
|
||
*/
|
||
function toHexString(uint256 value) internal pure returns (string memory) {
|
||
if (value == 0) {
|
||
return "0x00";
|
||
}
|
||
uint256 temp = value;
|
||
uint256 length = 0;
|
||
while (temp != 0) {
|
||
length++;
|
||
temp >>= 8;
|
||
}
|
||
return toHexString(value, length);
|
||
}
|
||
|
||
/**
|
||
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
|
||
*/
|
||
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
|
||
bytes memory buffer = new bytes(2 * length + 2);
|
||
buffer[0] = "0";
|
||
buffer[1] = "x";
|
||
for (uint256 i = 2 * length + 1; i > 1; --i) {
|
||
buffer[i] = _HEX_SYMBOLS[value & 0xf];
|
||
value >>= 4;
|
||
}
|
||
require(value == 0, "Strings: hex length insufficient");
|
||
return string(buffer);
|
||
}
|
||
}
|
||
|
||
// File: @openzeppelin\contracts\utils\introspection\ERC165.sol
|
||
|
||
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
|
||
|
||
pragma solidity ^0.8.0;
|
||
|
||
/**
|
||
* @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;
|
||
}
|
||
}
|
||
|
||
// File: @openzeppelin\contracts\token\ERC721\ERC721.sol
|
||
|
||
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol)
|
||
|
||
pragma solidity ^0.8.0;
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
/**
|
||
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
|
||
* the Metadata extension, but not including the Enumerable extension, which is available separately as
|
||
* {ERC721Enumerable}.
|
||
*/
|
||
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
|
||
using Address for address;
|
||
using Strings for uint256;
|
||
|
||
// Token name
|
||
string private _name;
|
||
|
||
// Token symbol
|
||
string private _symbol;
|
||
|
||
// Mapping from token ID to owner address
|
||
mapping(uint256 => address) private _owners;
|
||
|
||
// Mapping owner address to token count
|
||
mapping(address => uint256) private _balances;
|
||
|
||
// Mapping from token ID to approved address
|
||
mapping(uint256 => address) private _tokenApprovals;
|
||
|
||
// Mapping from owner to operator approvals
|
||
mapping(address => mapping(address => bool)) private _operatorApprovals;
|
||
|
||
/**
|
||
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
|
||
*/
|
||
constructor(string memory name_, string memory symbol_) {
|
||
_name = name_;
|
||
_symbol = symbol_;
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC165-supportsInterface}.
|
||
*/
|
||
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
|
||
return
|
||
interfaceId == type(IERC721).interfaceId ||
|
||
interfaceId == type(IERC721Metadata).interfaceId ||
|
||
super.supportsInterface(interfaceId);
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721-balanceOf}.
|
||
*/
|
||
function balanceOf(address owner) public view virtual override returns (uint256) {
|
||
require(owner != address(0), "ERC721: balance query for the zero address");
|
||
return _balances[owner];
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721-ownerOf}.
|
||
*/
|
||
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
|
||
address owner = _owners[tokenId];
|
||
require(owner != address(0), "ERC721: owner query for nonexistent token");
|
||
return owner;
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721Metadata-name}.
|
||
*/
|
||
function name() public view virtual override returns (string memory) {
|
||
return _name;
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721Metadata-symbol}.
|
||
*/
|
||
function symbol() public view virtual override returns (string memory) {
|
||
return _symbol;
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721Metadata-tokenURI}.
|
||
*/
|
||
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
|
||
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
|
||
|
||
string memory baseURI = _baseURI();
|
||
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
|
||
}
|
||
|
||
/**
|
||
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
|
||
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
|
||
* by default, can be overriden in child contracts.
|
||
*/
|
||
function _baseURI() internal view virtual returns (string memory) {
|
||
return "";
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721-approve}.
|
||
*/
|
||
function approve(address to, uint256 tokenId) public virtual override {
|
||
address owner = ERC721.ownerOf(tokenId);
|
||
require(to != owner, "ERC721: approval to current owner");
|
||
|
||
require(
|
||
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
|
||
"ERC721: approve caller is not owner nor approved for all"
|
||
);
|
||
|
||
_approve(to, tokenId);
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721-getApproved}.
|
||
*/
|
||
function getApproved(uint256 tokenId) public view virtual override returns (address) {
|
||
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
|
||
|
||
return _tokenApprovals[tokenId];
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721-setApprovalForAll}.
|
||
*/
|
||
function setApprovalForAll(address operator, bool approved) public virtual override {
|
||
_setApprovalForAll(_msgSender(), operator, approved);
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721-isApprovedForAll}.
|
||
*/
|
||
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
|
||
return _operatorApprovals[owner][operator];
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721-transferFrom}.
|
||
*/
|
||
function transferFrom(
|
||
address from,
|
||
address to,
|
||
uint256 tokenId
|
||
) public virtual override {
|
||
//solhint-disable-next-line max-line-length
|
||
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
|
||
|
||
_transfer(from, to, tokenId);
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721-safeTransferFrom}.
|
||
*/
|
||
function safeTransferFrom(
|
||
address from,
|
||
address to,
|
||
uint256 tokenId
|
||
) public virtual override {
|
||
safeTransferFrom(from, to, tokenId, "");
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721-safeTransferFrom}.
|
||
*/
|
||
function safeTransferFrom(
|
||
address from,
|
||
address to,
|
||
uint256 tokenId,
|
||
bytes memory _data
|
||
) public virtual override {
|
||
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
|
||
_safeTransfer(from, to, tokenId, _data);
|
||
}
|
||
|
||
/**
|
||
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
|
||
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
|
||
*
|
||
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
|
||
*
|
||
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
|
||
* implement alternative mechanisms to perform token transfer, such as signature-based.
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - `from` cannot be the zero address.
|
||
* - `to` cannot be the zero address.
|
||
* - `tokenId` token must exist and be owned by `from`.
|
||
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
|
||
*
|
||
* Emits a {Transfer} event.
|
||
*/
|
||
function _safeTransfer(
|
||
address from,
|
||
address to,
|
||
uint256 tokenId,
|
||
bytes memory _data
|
||
) internal virtual {
|
||
_transfer(from, to, tokenId);
|
||
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
|
||
}
|
||
|
||
/**
|
||
* @dev Returns whether `tokenId` exists.
|
||
*
|
||
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
|
||
*
|
||
* Tokens start existing when they are minted (`_mint`),
|
||
* and stop existing when they are burned (`_burn`).
|
||
*/
|
||
function _exists(uint256 tokenId) internal view virtual returns (bool) {
|
||
return _owners[tokenId] != address(0);
|
||
}
|
||
|
||
/**
|
||
* @dev Returns whether `spender` is allowed to manage `tokenId`.
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - `tokenId` must exist.
|
||
*/
|
||
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
|
||
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
|
||
address owner = ERC721.ownerOf(tokenId);
|
||
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
|
||
}
|
||
|
||
/**
|
||
* @dev Safely mints `tokenId` and transfers it to `to`.
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - `tokenId` must not exist.
|
||
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
|
||
*
|
||
* Emits a {Transfer} event.
|
||
*/
|
||
function _safeMint(address to, uint256 tokenId) internal virtual {
|
||
_safeMint(to, tokenId, "");
|
||
}
|
||
|
||
/**
|
||
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
|
||
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
|
||
*/
|
||
function _safeMint(
|
||
address to,
|
||
uint256 tokenId,
|
||
bytes memory _data
|
||
) internal virtual {
|
||
_mint(to, tokenId);
|
||
require(
|
||
_checkOnERC721Received(address(0), to, tokenId, _data),
|
||
"ERC721: transfer to non ERC721Receiver implementer"
|
||
);
|
||
}
|
||
|
||
/**
|
||
* @dev Mints `tokenId` and transfers it to `to`.
|
||
*
|
||
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - `tokenId` must not exist.
|
||
* - `to` cannot be the zero address.
|
||
*
|
||
* Emits a {Transfer} event.
|
||
*/
|
||
function _mint(address to, uint256 tokenId) internal virtual {
|
||
require(to != address(0), "ERC721: mint to the zero address");
|
||
require(!_exists(tokenId), "ERC721: token already minted");
|
||
|
||
_beforeTokenTransfer(address(0), to, tokenId);
|
||
|
||
_balances[to] += 1;
|
||
_owners[tokenId] = to;
|
||
|
||
emit Transfer(address(0), to, tokenId);
|
||
|
||
_afterTokenTransfer(address(0), to, tokenId);
|
||
}
|
||
|
||
/**
|
||
* @dev Destroys `tokenId`.
|
||
* The approval is cleared when the token is burned.
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - `tokenId` must exist.
|
||
*
|
||
* Emits a {Transfer} event.
|
||
*/
|
||
function _burn(uint256 tokenId) internal virtual {
|
||
address owner = ERC721.ownerOf(tokenId);
|
||
|
||
_beforeTokenTransfer(owner, address(0), tokenId);
|
||
|
||
// Clear approvals
|
||
_approve(address(0), tokenId);
|
||
|
||
_balances[owner] -= 1;
|
||
delete _owners[tokenId];
|
||
|
||
emit Transfer(owner, address(0), tokenId);
|
||
|
||
_afterTokenTransfer(owner, address(0), tokenId);
|
||
}
|
||
|
||
/**
|
||
* @dev Transfers `tokenId` from `from` to `to`.
|
||
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - `to` cannot be the zero address.
|
||
* - `tokenId` token must be owned by `from`.
|
||
*
|
||
* Emits a {Transfer} event.
|
||
*/
|
||
function _transfer(
|
||
address from,
|
||
address to,
|
||
uint256 tokenId
|
||
) internal virtual {
|
||
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
|
||
require(to != address(0), "ERC721: transfer to the zero address");
|
||
|
||
_beforeTokenTransfer(from, to, tokenId);
|
||
|
||
// Clear approvals from the previous owner
|
||
_approve(address(0), tokenId);
|
||
|
||
_balances[from] -= 1;
|
||
_balances[to] += 1;
|
||
_owners[tokenId] = to;
|
||
|
||
emit Transfer(from, to, tokenId);
|
||
|
||
_afterTokenTransfer(from, to, tokenId);
|
||
}
|
||
|
||
/**
|
||
* @dev Approve `to` to operate on `tokenId`
|
||
*
|
||
* Emits a {Approval} event.
|
||
*/
|
||
function _approve(address to, uint256 tokenId) internal virtual {
|
||
_tokenApprovals[tokenId] = to;
|
||
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
|
||
}
|
||
|
||
/**
|
||
* @dev Approve `operator` to operate on all of `owner` tokens
|
||
*
|
||
* Emits a {ApprovalForAll} event.
|
||
*/
|
||
function _setApprovalForAll(
|
||
address owner,
|
||
address operator,
|
||
bool approved
|
||
) internal virtual {
|
||
require(owner != operator, "ERC721: approve to caller");
|
||
_operatorApprovals[owner][operator] = approved;
|
||
emit ApprovalForAll(owner, operator, approved);
|
||
}
|
||
|
||
/**
|
||
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
|
||
* The call is not executed if the target address is not a contract.
|
||
*
|
||
* @param from address representing the previous owner of the given token ID
|
||
* @param to target address that will receive the tokens
|
||
* @param tokenId uint256 ID of the token to be transferred
|
||
* @param _data bytes optional data to send along with the call
|
||
* @return bool whether the call correctly returned the expected magic value
|
||
*/
|
||
function _checkOnERC721Received(
|
||
address from,
|
||
address to,
|
||
uint256 tokenId,
|
||
bytes memory _data
|
||
) private returns (bool) {
|
||
if (to.isContract()) {
|
||
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
|
||
return retval == IERC721Receiver.onERC721Received.selector;
|
||
} catch (bytes memory reason) {
|
||
if (reason.length == 0) {
|
||
revert("ERC721: transfer to non ERC721Receiver implementer");
|
||
} else {
|
||
assembly {
|
||
revert(add(32, reason), mload(reason))
|
||
}
|
||
}
|
||
}
|
||
} else {
|
||
return true;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @dev Hook that is called before any token transfer. This includes minting
|
||
* and burning.
|
||
*
|
||
* Calling conditions:
|
||
*
|
||
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
|
||
* transferred to `to`.
|
||
* - When `from` is zero, `tokenId` will be minted for `to`.
|
||
* - When `to` is zero, ``from``'s `tokenId` will be burned.
|
||
* - `from` and `to` are never both zero.
|
||
*
|
||
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
|
||
*/
|
||
function _beforeTokenTransfer(
|
||
address from,
|
||
address to,
|
||
uint256 tokenId
|
||
) internal virtual {}
|
||
|
||
/**
|
||
* @dev Hook that is called after any transfer of tokens. This includes
|
||
* minting and burning.
|
||
*
|
||
* Calling conditions:
|
||
*
|
||
* - when `from` and `to` are both non-zero.
|
||
* - `from` and `to` are never both zero.
|
||
*
|
||
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
|
||
*/
|
||
function _afterTokenTransfer(
|
||
address from,
|
||
address to,
|
||
uint256 tokenId
|
||
) internal virtual {}
|
||
}
|
||
|
||
// File: @openzeppelin\contracts\token\ERC721\extensions\IERC721Enumerable.sol
|
||
|
||
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)
|
||
|
||
pragma solidity ^0.8.0;
|
||
|
||
/**
|
||
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
|
||
* @dev See https://eips.ethereum.org/EIPS/eip-721
|
||
*/
|
||
interface IERC721Enumerable is IERC721 {
|
||
/**
|
||
* @dev Returns the total amount of tokens stored by the contract.
|
||
*/
|
||
function totalSupply() external view returns (uint256);
|
||
|
||
/**
|
||
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
|
||
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
|
||
*/
|
||
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);
|
||
|
||
/**
|
||
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
|
||
* Use along with {totalSupply} to enumerate all tokens.
|
||
*/
|
||
function tokenByIndex(uint256 index) external view returns (uint256);
|
||
}
|
||
|
||
// File: @openzeppelin\contracts\token\ERC721\extensions\ERC721Enumerable.sol
|
||
|
||
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol)
|
||
|
||
pragma solidity ^0.8.0;
|
||
|
||
|
||
/**
|
||
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
|
||
* enumerability of all the token ids in the contract as well as all token ids owned by each
|
||
* account.
|
||
*/
|
||
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
|
||
// Mapping from owner to list of owned token IDs
|
||
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
|
||
|
||
// Mapping from token ID to index of the owner tokens list
|
||
mapping(uint256 => uint256) private _ownedTokensIndex;
|
||
|
||
// Array with all token ids, used for enumeration
|
||
uint256[] private _allTokens;
|
||
|
||
// Mapping from token id to position in the allTokens array
|
||
mapping(uint256 => uint256) private _allTokensIndex;
|
||
|
||
/**
|
||
* @dev See {IERC165-supportsInterface}.
|
||
*/
|
||
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
|
||
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
|
||
*/
|
||
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
|
||
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
|
||
return _ownedTokens[owner][index];
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721Enumerable-totalSupply}.
|
||
*/
|
||
function totalSupply() public view virtual override returns (uint256) {
|
||
return _allTokens.length;
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC721Enumerable-tokenByIndex}.
|
||
*/
|
||
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
|
||
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
|
||
return _allTokens[index];
|
||
}
|
||
|
||
/**
|
||
* @dev Hook that is called before any token transfer. This includes minting
|
||
* and burning.
|
||
*
|
||
* Calling conditions:
|
||
*
|
||
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
|
||
* transferred to `to`.
|
||
* - When `from` is zero, `tokenId` will be minted for `to`.
|
||
* - When `to` is zero, ``from``'s `tokenId` will be burned.
|
||
* - `from` cannot be the zero address.
|
||
* - `to` cannot be the zero address.
|
||
*
|
||
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
|
||
*/
|
||
function _beforeTokenTransfer(
|
||
address from,
|
||
address to,
|
||
uint256 tokenId
|
||
) internal virtual override {
|
||
super._beforeTokenTransfer(from, to, tokenId);
|
||
|
||
if (from == address(0)) {
|
||
_addTokenToAllTokensEnumeration(tokenId);
|
||
} else if (from != to) {
|
||
_removeTokenFromOwnerEnumeration(from, tokenId);
|
||
}
|
||
if (to == address(0)) {
|
||
_removeTokenFromAllTokensEnumeration(tokenId);
|
||
} else if (to != from) {
|
||
_addTokenToOwnerEnumeration(to, tokenId);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @dev Private function to add a token to this extension's ownership-tracking data structures.
|
||
* @param to address representing the new owner of the given token ID
|
||
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
|
||
*/
|
||
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
|
||
uint256 length = ERC721.balanceOf(to);
|
||
_ownedTokens[to][length] = tokenId;
|
||
_ownedTokensIndex[tokenId] = length;
|
||
}
|
||
|
||
/**
|
||
* @dev Private function to add a token to this extension's token tracking data structures.
|
||
* @param tokenId uint256 ID of the token to be added to the tokens list
|
||
*/
|
||
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
|
||
_allTokensIndex[tokenId] = _allTokens.length;
|
||
_allTokens.push(tokenId);
|
||
}
|
||
|
||
/**
|
||
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
|
||
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
|
||
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
|
||
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
|
||
* @param from address representing the previous owner of the given token ID
|
||
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
|
||
*/
|
||
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
|
||
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
|
||
// then delete the last slot (swap and pop).
|
||
|
||
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
|
||
uint256 tokenIndex = _ownedTokensIndex[tokenId];
|
||
|
||
// When the token to delete is the last token, the swap operation is unnecessary
|
||
if (tokenIndex != lastTokenIndex) {
|
||
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
|
||
|
||
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
|
||
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
|
||
}
|
||
|
||
// This also deletes the contents at the last position of the array
|
||
delete _ownedTokensIndex[tokenId];
|
||
delete _ownedTokens[from][lastTokenIndex];
|
||
}
|
||
|
||
/**
|
||
* @dev Private function to remove a token from this extension's token tracking data structures.
|
||
* This has O(1) time complexity, but alters the order of the _allTokens array.
|
||
* @param tokenId uint256 ID of the token to be removed from the tokens list
|
||
*/
|
||
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
|
||
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
|
||
// then delete the last slot (swap and pop).
|
||
|
||
uint256 lastTokenIndex = _allTokens.length - 1;
|
||
uint256 tokenIndex = _allTokensIndex[tokenId];
|
||
|
||
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
|
||
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
|
||
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
|
||
uint256 lastTokenId = _allTokens[lastTokenIndex];
|
||
|
||
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
|
||
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
|
||
|
||
// This also deletes the contents at the last position of the array
|
||
delete _allTokensIndex[tokenId];
|
||
_allTokens.pop();
|
||
}
|
||
}
|
||
|
||
// File: @openzeppelin\contracts\access\IAccessControl.sol
|
||
|
||
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)
|
||
|
||
pragma solidity ^0.8.0;
|
||
|
||
/**
|
||
* @dev External interface of AccessControl declared to support ERC165 detection.
|
||
*/
|
||
interface IAccessControl {
|
||
/**
|
||
* @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
|
||
*
|
||
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
|
||
* {RoleAdminChanged} not being emitted signaling this.
|
||
*
|
||
* _Available since v3.1._
|
||
*/
|
||
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
|
||
|
||
/**
|
||
* @dev Emitted when `account` is granted `role`.
|
||
*
|
||
* `sender` is the account that originated the contract call, an admin role
|
||
* bearer except when using {AccessControl-_setupRole}.
|
||
*/
|
||
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
|
||
|
||
/**
|
||
* @dev Emitted when `account` is revoked `role`.
|
||
*
|
||
* `sender` is the account that originated the contract call:
|
||
* - if using `revokeRole`, it is the admin role bearer
|
||
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
|
||
*/
|
||
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
|
||
|
||
/**
|
||
* @dev Returns `true` if `account` has been granted `role`.
|
||
*/
|
||
function hasRole(bytes32 role, address account) external view returns (bool);
|
||
|
||
/**
|
||
* @dev Returns the admin role that controls `role`. See {grantRole} and
|
||
* {revokeRole}.
|
||
*
|
||
* To change a role's admin, use {AccessControl-_setRoleAdmin}.
|
||
*/
|
||
function getRoleAdmin(bytes32 role) external view returns (bytes32);
|
||
|
||
/**
|
||
* @dev Grants `role` to `account`.
|
||
*
|
||
* If `account` had not been already granted `role`, emits a {RoleGranted}
|
||
* event.
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - the caller must have ``role``'s admin role.
|
||
*/
|
||
function grantRole(bytes32 role, address account) external;
|
||
|
||
/**
|
||
* @dev Revokes `role` from `account`.
|
||
*
|
||
* If `account` had been granted `role`, emits a {RoleRevoked} event.
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - the caller must have ``role``'s admin role.
|
||
*/
|
||
function revokeRole(bytes32 role, address account) external;
|
||
|
||
/**
|
||
* @dev Revokes `role` from the calling account.
|
||
*
|
||
* Roles are often managed via {grantRole} and {revokeRole}: this function's
|
||
* purpose is to provide a mechanism for accounts to lose their privileges
|
||
* if they are compromised (such as when a trusted device is misplaced).
|
||
*
|
||
* If the calling account had been granted `role`, emits a {RoleRevoked}
|
||
* event.
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - the caller must be `account`.
|
||
*/
|
||
function renounceRole(bytes32 role, address account) external;
|
||
}
|
||
|
||
// File: @openzeppelin\contracts\access\AccessControl.sol
|
||
|
||
// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControl.sol)
|
||
|
||
pragma solidity ^0.8.0;
|
||
|
||
|
||
|
||
|
||
/**
|
||
* @dev Contract module that allows children to implement role-based access
|
||
* control mechanisms. This is a lightweight version that doesn't allow enumerating role
|
||
* members except through off-chain means by accessing the contract event logs. Some
|
||
* applications may benefit from on-chain enumerability, for those cases see
|
||
* {AccessControlEnumerable}.
|
||
*
|
||
* Roles are referred to by their `bytes32` identifier. These should be exposed
|
||
* in the external API and be unique. The best way to achieve this is by
|
||
* using `public constant` hash digests:
|
||
*
|
||
* ```
|
||
* bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
|
||
* ```
|
||
*
|
||
* Roles can be used to represent a set of permissions. To restrict access to a
|
||
* function call, use {hasRole}:
|
||
*
|
||
* ```
|
||
* function foo() public {
|
||
* require(hasRole(MY_ROLE, msg.sender));
|
||
* ...
|
||
* }
|
||
* ```
|
||
*
|
||
* Roles can be granted and revoked dynamically via the {grantRole} and
|
||
* {revokeRole} functions. Each role has an associated admin role, and only
|
||
* accounts that have a role's admin role can call {grantRole} and {revokeRole}.
|
||
*
|
||
* By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
|
||
* that only accounts with this role will be able to grant or revoke other
|
||
* roles. More complex role relationships can be created by using
|
||
* {_setRoleAdmin}.
|
||
*
|
||
* WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
|
||
* grant and revoke this role. Extra precautions should be taken to secure
|
||
* accounts that have been granted it.
|
||
*/
|
||
abstract contract AccessControl is Context, IAccessControl, ERC165 {
|
||
struct RoleData {
|
||
mapping(address => bool) members;
|
||
bytes32 adminRole;
|
||
}
|
||
|
||
mapping(bytes32 => RoleData) private _roles;
|
||
|
||
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
|
||
|
||
/**
|
||
* @dev Modifier that checks that an account has a specific role. Reverts
|
||
* with a standardized message including the required role.
|
||
*
|
||
* The format of the revert reason is given by the following regular expression:
|
||
*
|
||
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
|
||
*
|
||
* _Available since v4.1._
|
||
*/
|
||
modifier onlyRole(bytes32 role) {
|
||
_checkRole(role, _msgSender());
|
||
_;
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC165-supportsInterface}.
|
||
*/
|
||
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
|
||
return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
|
||
}
|
||
|
||
/**
|
||
* @dev Returns `true` if `account` has been granted `role`.
|
||
*/
|
||
function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
|
||
return _roles[role].members[account];
|
||
}
|
||
|
||
/**
|
||
* @dev Revert with a standard message if `account` is missing `role`.
|
||
*
|
||
* The format of the revert reason is given by the following regular expression:
|
||
*
|
||
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
|
||
*/
|
||
function _checkRole(bytes32 role, address account) internal view virtual {
|
||
if (!hasRole(role, account)) {
|
||
revert(
|
||
string(
|
||
abi.encodePacked(
|
||
"AccessControl: account ",
|
||
Strings.toHexString(uint160(account), 20),
|
||
" is missing role ",
|
||
Strings.toHexString(uint256(role), 32)
|
||
)
|
||
)
|
||
);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @dev Returns the admin role that controls `role`. See {grantRole} and
|
||
* {revokeRole}.
|
||
*
|
||
* To change a role's admin, use {_setRoleAdmin}.
|
||
*/
|
||
function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
|
||
return _roles[role].adminRole;
|
||
}
|
||
|
||
/**
|
||
* @dev Grants `role` to `account`.
|
||
*
|
||
* If `account` had not been already granted `role`, emits a {RoleGranted}
|
||
* event.
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - the caller must have ``role``'s admin role.
|
||
*/
|
||
function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
|
||
_grantRole(role, account);
|
||
}
|
||
|
||
/**
|
||
* @dev Revokes `role` from `account`.
|
||
*
|
||
* If `account` had been granted `role`, emits a {RoleRevoked} event.
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - the caller must have ``role``'s admin role.
|
||
*/
|
||
function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
|
||
_revokeRole(role, account);
|
||
}
|
||
|
||
/**
|
||
* @dev Revokes `role` from the calling account.
|
||
*
|
||
* Roles are often managed via {grantRole} and {revokeRole}: this function's
|
||
* purpose is to provide a mechanism for accounts to lose their privileges
|
||
* if they are compromised (such as when a trusted device is misplaced).
|
||
*
|
||
* If the calling account had been revoked `role`, emits a {RoleRevoked}
|
||
* event.
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - the caller must be `account`.
|
||
*/
|
||
function renounceRole(bytes32 role, address account) public virtual override {
|
||
require(account == _msgSender(), "AccessControl: can only renounce roles for self");
|
||
|
||
_revokeRole(role, account);
|
||
}
|
||
|
||
/**
|
||
* @dev Grants `role` to `account`.
|
||
*
|
||
* If `account` had not been already granted `role`, emits a {RoleGranted}
|
||
* event. Note that unlike {grantRole}, this function doesn't perform any
|
||
* checks on the calling account.
|
||
*
|
||
* [WARNING]
|
||
* ====
|
||
* This function should only be called from the constructor when setting
|
||
* up the initial roles for the system.
|
||
*
|
||
* Using this function in any other way is effectively circumventing the admin
|
||
* system imposed by {AccessControl}.
|
||
* ====
|
||
*
|
||
* NOTE: This function is deprecated in favor of {_grantRole}.
|
||
*/
|
||
function _setupRole(bytes32 role, address account) internal virtual {
|
||
_grantRole(role, account);
|
||
}
|
||
|
||
/**
|
||
* @dev Sets `adminRole` as ``role``'s admin role.
|
||
*
|
||
* Emits a {RoleAdminChanged} event.
|
||
*/
|
||
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
|
||
bytes32 previousAdminRole = getRoleAdmin(role);
|
||
_roles[role].adminRole = adminRole;
|
||
emit RoleAdminChanged(role, previousAdminRole, adminRole);
|
||
}
|
||
|
||
/**
|
||
* @dev Grants `role` to `account`.
|
||
*
|
||
* Internal function without access restriction.
|
||
*/
|
||
function _grantRole(bytes32 role, address account) internal virtual {
|
||
if (!hasRole(role, account)) {
|
||
_roles[role].members[account] = true;
|
||
emit RoleGranted(role, account, _msgSender());
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @dev Revokes `role` from `account`.
|
||
*
|
||
* Internal function without access restriction.
|
||
*/
|
||
function _revokeRole(bytes32 role, address account) internal virtual {
|
||
if (hasRole(role, account)) {
|
||
_roles[role].members[account] = false;
|
||
emit RoleRevoked(role, account, _msgSender());
|
||
}
|
||
}
|
||
}
|
||
|
||
// File: contracts\tokens\erc721\BEBadge.sol
|
||
|
||
|
||
pragma solidity 0.8.10;
|
||
contract BEBadge is AccessControl, ERC721Enumerable {
|
||
mapping(uint256 => bool) public lockedTokens;
|
||
string private _baseTokenURI = "https://market.cebg.games/api/nft/info/";
|
||
bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
|
||
bytes32 public constant BURN_ROLE = keccak256("BURN_ROLE");
|
||
bytes32 public constant LOCK_ROLE = keccak256("LOCK_ROLE");
|
||
uint256 public immutable supplyLimit;
|
||
uint256 tokenIndex;
|
||
|
||
event Lock(uint256 indexed tokenId);
|
||
event UnLock(uint256 indexed tokenId);
|
||
event BatchMint(address indexed to, uint256[] tokenIds);
|
||
|
||
constructor(
|
||
string memory _name,
|
||
string memory _symbol,
|
||
uint256 _supplyLimt
|
||
) ERC721(_name, _symbol) {
|
||
_setRoleAdmin(MINTER_ROLE, DEFAULT_ADMIN_ROLE);
|
||
_setRoleAdmin(BURN_ROLE, DEFAULT_ADMIN_ROLE);
|
||
_setRoleAdmin(LOCK_ROLE, DEFAULT_ADMIN_ROLE);
|
||
|
||
_setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
|
||
_setupRole(MINTER_ROLE, msg.sender);
|
||
_setupRole(BURN_ROLE, msg.sender);
|
||
_setupRole(LOCK_ROLE, msg.sender);
|
||
supplyLimit = _supplyLimt;
|
||
}
|
||
|
||
function _baseURI() internal view virtual override returns (string memory) {
|
||
return _baseTokenURI;
|
||
}
|
||
|
||
/**
|
||
* @dev Batch mint tokens and transfer to specified address.
|
||
*
|
||
* Requirements:
|
||
* - Caller must have `MINTER_ROLE`.
|
||
* - The total supply limit should not be exceeded.
|
||
* - The number of tokenIds offered for minting should not exceed 100.
|
||
*/
|
||
|
||
function batchMint(
|
||
address to,
|
||
uint256 count
|
||
) external onlyRole(MINTER_ROLE) returns (uint256[] memory) {
|
||
require(count <= 100, "tokenIds too many");
|
||
if (supplyLimit > 0) {
|
||
require(
|
||
(totalSupply() + count) <= supplyLimit,
|
||
"Exceed the total supply"
|
||
);
|
||
}
|
||
uint256[] memory tokenIds = new uint256[](count);
|
||
for (uint256 i = 0; i < count; i++) {
|
||
tokenIndex += 1;
|
||
uint256 tokenId = tokenIndex;
|
||
_safeMint(to, tokenId);
|
||
tokenIds[i] = tokenId;
|
||
}
|
||
emit BatchMint(to, tokenIds);
|
||
return tokenIds;
|
||
}
|
||
|
||
/**
|
||
* @dev Grant mint role to address
|
||
*/
|
||
function setMintRole(address to) external {
|
||
grantRole(MINTER_ROLE, to);
|
||
}
|
||
|
||
/**
|
||
* @dev Remove mint role to address
|
||
*/
|
||
function removeMintRole(address to) external {
|
||
revokeRole(MINTER_ROLE, to);
|
||
}
|
||
|
||
/**
|
||
* @dev grant burn role to address
|
||
*/
|
||
function setBurnRole(address to) external {
|
||
grantRole(BURN_ROLE, to);
|
||
}
|
||
|
||
/**
|
||
* @dev Remove burn role to address
|
||
*/
|
||
function removeBurnRole(address proxy) external {
|
||
revokeRole(BURN_ROLE, proxy);
|
||
}
|
||
|
||
/**
|
||
* @dev Add address for lock item
|
||
*/
|
||
function grantLockRole(address to) external {
|
||
grantRole(LOCK_ROLE, to);
|
||
}
|
||
|
||
/**
|
||
* @dev Remove address for lock item
|
||
*/
|
||
function removeLockRole(address account) external {
|
||
revokeRole(LOCK_ROLE, account);
|
||
}
|
||
|
||
/**
|
||
* @dev Lock token to use in game or for rental
|
||
*/
|
||
function lock(uint256 tokenId) external onlyRole(LOCK_ROLE) {
|
||
require(_exists(tokenId), "Must be valid tokenId");
|
||
require(!lockedTokens[tokenId], "Token has already locked");
|
||
lockedTokens[tokenId] = true;
|
||
emit Lock(tokenId);
|
||
}
|
||
|
||
/**
|
||
* @dev Unlock token to use blockchain or sale on marketplace
|
||
*/
|
||
function unlock(uint256 tokenId) external onlyRole(LOCK_ROLE) {
|
||
require(_exists(tokenId), "Must be valid tokenId");
|
||
require(lockedTokens[tokenId], "Token has already unlocked");
|
||
lockedTokens[tokenId] = false;
|
||
emit UnLock(tokenId);
|
||
}
|
||
|
||
/**
|
||
* @dev Get lock status
|
||
*/
|
||
function isLocked(uint256 tokenId) external view returns (bool) {
|
||
return lockedTokens[tokenId];
|
||
}
|
||
|
||
/**
|
||
* @dev Set token URI
|
||
*/
|
||
function updateBaseURI(
|
||
string calldata baseTokenURI
|
||
) external onlyRole(DEFAULT_ADMIN_ROLE) {
|
||
_baseTokenURI = baseTokenURI;
|
||
}
|
||
|
||
/**
|
||
* @dev one type badge has same tokenURI
|
||
*/
|
||
function tokenURI(
|
||
uint256 tokenId
|
||
) public view virtual override returns (string memory) {
|
||
string memory baseURI = _baseURI();
|
||
return bytes(baseURI).length > 0 ? baseURI : "";
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC165-_beforeTokenTransfer}.
|
||
*/
|
||
function _beforeTokenTransfer(
|
||
address from,
|
||
address to,
|
||
uint256 tokenId
|
||
) internal virtual override(ERC721Enumerable) {
|
||
require(!lockedTokens[tokenId], "Can not transfer locked token");
|
||
super._beforeTokenTransfer(from, to, tokenId);
|
||
}
|
||
|
||
/**
|
||
* @dev See {IERC165-supportsInterface}.
|
||
*/
|
||
function supportsInterface(
|
||
bytes4 interfaceId
|
||
)
|
||
public
|
||
view
|
||
virtual
|
||
override(AccessControl, ERC721Enumerable)
|
||
returns (bool)
|
||
{
|
||
return super.supportsInterface(interfaceId);
|
||
}
|
||
|
||
/**
|
||
* @dev Burns `tokenId`.
|
||
*
|
||
* Requirements:
|
||
*
|
||
* - The caller must own `tokenId` or be an approved operator.
|
||
*/
|
||
function burn(
|
||
address owner,
|
||
uint256 tokenId
|
||
) external virtual onlyRole(BURN_ROLE) {
|
||
require(_exists(tokenId), "TokenId not exists");
|
||
require(!lockedTokens[tokenId], "Can not burn locked token");
|
||
require(
|
||
ownerOf(tokenId) == owner,
|
||
"current address is not owner of this item now"
|
||
);
|
||
_burn(tokenId);
|
||
}
|
||
}
|
||
|
||
// File: @openzeppelin\contracts\utils\cryptography\ECDSA.sol
|
||
|
||
|
||
// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/ECDSA.sol)
|
||
|
||
pragma solidity ^0.8.0;
|
||
|
||
/**
|
||
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
|
||
*
|
||
* These functions can be used to verify that a message was signed by the holder
|
||
* of the private keys of a given address.
|
||
*/
|
||
library ECDSA {
|
||
enum RecoverError {
|
||
NoError,
|
||
InvalidSignature,
|
||
InvalidSignatureLength,
|
||
InvalidSignatureS,
|
||
InvalidSignatureV
|
||
}
|
||
|
||
function _throwError(RecoverError error) private pure {
|
||
if (error == RecoverError.NoError) {
|
||
return; // no error: do nothing
|
||
} else if (error == RecoverError.InvalidSignature) {
|
||
revert("ECDSA: invalid signature");
|
||
} else if (error == RecoverError.InvalidSignatureLength) {
|
||
revert("ECDSA: invalid signature length");
|
||
} else if (error == RecoverError.InvalidSignatureS) {
|
||
revert("ECDSA: invalid signature 's' value");
|
||
} else if (error == RecoverError.InvalidSignatureV) {
|
||
revert("ECDSA: invalid signature 'v' value");
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @dev Returns the address that signed a hashed message (`hash`) with
|
||
* `signature` or error string. This address can then be used for verification purposes.
|
||
*
|
||
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
|
||
* this function rejects them by requiring the `s` value to be in the lower
|
||
* half order, and the `v` value to be either 27 or 28.
|
||
*
|
||
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
|
||
* verification to be secure: it is possible to craft signatures that
|
||
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
|
||
* this is by receiving a hash of the original message (which may otherwise
|
||
* be too long), and then calling {toEthSignedMessageHash} on it.
|
||
*
|
||
* Documentation for signature generation:
|
||
* - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
|
||
* - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
|
||
*
|
||
* _Available since v4.3._
|
||
*/
|
||
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
|
||
// Check the signature length
|
||
// - case 65: r,s,v signature (standard)
|
||
// - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
|
||
if (signature.length == 65) {
|
||
bytes32 r;
|
||
bytes32 s;
|
||
uint8 v;
|
||
// ecrecover takes the signature parameters, and the only way to get them
|
||
// currently is to use assembly.
|
||
assembly {
|
||
r := mload(add(signature, 0x20))
|
||
s := mload(add(signature, 0x40))
|
||
v := byte(0, mload(add(signature, 0x60)))
|
||
}
|
||
return tryRecover(hash, v, r, s);
|
||
} else if (signature.length == 64) {
|
||
bytes32 r;
|
||
bytes32 vs;
|
||
// ecrecover takes the signature parameters, and the only way to get them
|
||
// currently is to use assembly.
|
||
assembly {
|
||
r := mload(add(signature, 0x20))
|
||
vs := mload(add(signature, 0x40))
|
||
}
|
||
return tryRecover(hash, r, vs);
|
||
} else {
|
||
return (address(0), RecoverError.InvalidSignatureLength);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @dev Returns the address that signed a hashed message (`hash`) with
|
||
* `signature`. This address can then be used for verification purposes.
|
||
*
|
||
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
|
||
* this function rejects them by requiring the `s` value to be in the lower
|
||
* half order, and the `v` value to be either 27 or 28.
|
||
*
|
||
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
|
||
* verification to be secure: it is possible to craft signatures that
|
||
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
|
||
* this is by receiving a hash of the original message (which may otherwise
|
||
* be too long), and then calling {toEthSignedMessageHash} on it.
|
||
*/
|
||
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
|
||
(address recovered, RecoverError error) = tryRecover(hash, signature);
|
||
_throwError(error);
|
||
return recovered;
|
||
}
|
||
|
||
/**
|
||
* @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
|
||
*
|
||
* See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
|
||
*
|
||
* _Available since v4.3._
|
||
*/
|
||
function tryRecover(
|
||
bytes32 hash,
|
||
bytes32 r,
|
||
bytes32 vs
|
||
) internal pure returns (address, RecoverError) {
|
||
bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
|
||
uint8 v = uint8((uint256(vs) >> 255) + 27);
|
||
return tryRecover(hash, v, r, s);
|
||
}
|
||
|
||
/**
|
||
* @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
|
||
*
|
||
* _Available since v4.2._
|
||
*/
|
||
function recover(
|
||
bytes32 hash,
|
||
bytes32 r,
|
||
bytes32 vs
|
||
) internal pure returns (address) {
|
||
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
|
||
_throwError(error);
|
||
return recovered;
|
||
}
|
||
|
||
/**
|
||
* @dev Overload of {ECDSA-tryRecover} that receives the `v`,
|
||
* `r` and `s` signature fields separately.
|
||
*
|
||
* _Available since v4.3._
|
||
*/
|
||
function tryRecover(
|
||
bytes32 hash,
|
||
uint8 v,
|
||
bytes32 r,
|
||
bytes32 s
|
||
) internal pure returns (address, RecoverError) {
|
||
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
|
||
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
|
||
// the valid range for s in (301): 0 < s < secp256k1n 梅 2 + 1, and for v in (302): v 鈭?{27, 28}. Most
|
||
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
|
||
//
|
||
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
|
||
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
|
||
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
|
||
// these malleable signatures as well.
|
||
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
|
||
return (address(0), RecoverError.InvalidSignatureS);
|
||
}
|
||
if (v != 27 && v != 28) {
|
||
return (address(0), RecoverError.InvalidSignatureV);
|
||
}
|
||
|
||
// If the signature is valid (and not malleable), return the signer address
|
||
address signer = ecrecover(hash, v, r, s);
|
||
if (signer == address(0)) {
|
||
return (address(0), RecoverError.InvalidSignature);
|
||
}
|
||
|
||
return (signer, RecoverError.NoError);
|
||
}
|
||
|
||
/**
|
||
* @dev Overload of {ECDSA-recover} that receives the `v`,
|
||
* `r` and `s` signature fields separately.
|
||
*/
|
||
function recover(
|
||
bytes32 hash,
|
||
uint8 v,
|
||
bytes32 r,
|
||
bytes32 s
|
||
) internal pure returns (address) {
|
||
(address recovered, RecoverError error) = tryRecover(hash, v, r, s);
|
||
_throwError(error);
|
||
return recovered;
|
||
}
|
||
|
||
/**
|
||
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
|
||
* produces hash corresponding to the one signed with the
|
||
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
|
||
* JSON-RPC method as part of EIP-191.
|
||
*
|
||
* See {recover}.
|
||
*/
|
||
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
|
||
// 32 is the length in bytes of hash,
|
||
// enforced by the type signature above
|
||
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
|
||
}
|
||
|
||
/**
|
||
* @dev Returns an Ethereum Signed Message, created from `s`. This
|
||
* produces hash corresponding to the one signed with the
|
||
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
|
||
* JSON-RPC method as part of EIP-191.
|
||
*
|
||
* See {recover}.
|
||
*/
|
||
function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
|
||
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
|
||
}
|
||
|
||
/**
|
||
* @dev Returns an Ethereum Signed Typed Data, created from a
|
||
* `domainSeparator` and a `structHash`. This produces hash corresponding
|
||
* to the one signed with the
|
||
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
|
||
* JSON-RPC method as part of EIP-712.
|
||
*
|
||
* See {recover}.
|
||
*/
|
||
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
|
||
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
|
||
}
|
||
}
|
||
|
||
// File: @openzeppelin\contracts\access\Ownable.sol
|
||
|
||
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
|
||
|
||
pragma solidity ^0.8.0;
|
||
|
||
/**
|
||
* @dev Contract module which provides a basic access control mechanism, where
|
||
* there is an account (an owner) that can be granted exclusive access to
|
||
* specific functions.
|
||
*
|
||
* By default, the owner account will be the one that deploys the contract. This
|
||
* can later be changed with {transferOwnership}.
|
||
*
|
||
* This module is used through inheritance. It will make available the modifier
|
||
* `onlyOwner`, which can be applied to your functions to restrict their use to
|
||
* the owner.
|
||
*/
|
||
abstract contract Ownable is Context {
|
||
address private _owner;
|
||
|
||
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
|
||
|
||
/**
|
||
* @dev Initializes the contract setting the deployer as the initial owner.
|
||
*/
|
||
constructor() {
|
||
_transferOwnership(_msgSender());
|
||
}
|
||
|
||
/**
|
||
* @dev Returns the address of the current owner.
|
||
*/
|
||
function owner() public view virtual returns (address) {
|
||
return _owner;
|
||
}
|
||
|
||
/**
|
||
* @dev Throws if called by any account other than the owner.
|
||
*/
|
||
modifier onlyOwner() {
|
||
require(owner() == _msgSender(), "Ownable: caller is not the owner");
|
||
_;
|
||
}
|
||
|
||
/**
|
||
* @dev Leaves the contract without owner. It will not be possible to call
|
||
* `onlyOwner` functions anymore. Can only be called by the current owner.
|
||
*
|
||
* NOTE: Renouncing ownership will leave the contract without an owner,
|
||
* thereby removing any functionality that is only available to the owner.
|
||
*/
|
||
function renounceOwnership() public virtual onlyOwner {
|
||
_transferOwnership(address(0));
|
||
}
|
||
|
||
/**
|
||
* @dev Transfers ownership of the contract to a new account (`newOwner`).
|
||
* Can only be called by the current owner.
|
||
*/
|
||
function transferOwnership(address newOwner) public virtual onlyOwner {
|
||
require(newOwner != address(0), "Ownable: new owner is the zero address");
|
||
_transferOwnership(newOwner);
|
||
}
|
||
|
||
/**
|
||
* @dev Transfers ownership of the contract to a new account (`newOwner`).
|
||
* Internal function without access restriction.
|
||
*/
|
||
function _transferOwnership(address newOwner) internal virtual {
|
||
address oldOwner = _owner;
|
||
_owner = newOwner;
|
||
emit OwnershipTransferred(oldOwner, newOwner);
|
||
}
|
||
}
|
||
|
||
// File: contracts\core\HasSignature.sol
|
||
|
||
pragma solidity 0.8.10;
|
||
contract HasSignature is Ownable {
|
||
bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
|
||
uint256 private immutable _CACHED_CHAIN_ID;
|
||
address private immutable _CACHED_THIS;
|
||
|
||
bytes32 private immutable _HASHED_NAME;
|
||
bytes32 private immutable _HASHED_VERSION;
|
||
bytes32 private immutable _TYPE_HASH;
|
||
mapping(bytes => bool) private _usedSignatures;
|
||
|
||
constructor(string memory name, string memory version) {
|
||
bytes32 hashedName = keccak256(bytes(name));
|
||
bytes32 hashedVersion = keccak256(bytes(version));
|
||
bytes32 typeHash = keccak256(
|
||
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
|
||
);
|
||
_HASHED_NAME = hashedName;
|
||
_HASHED_VERSION = hashedVersion;
|
||
_CACHED_CHAIN_ID = block.chainid;
|
||
_CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(
|
||
typeHash,
|
||
hashedName,
|
||
hashedVersion
|
||
);
|
||
_CACHED_THIS = address(this);
|
||
_TYPE_HASH = typeHash;
|
||
}
|
||
|
||
function _buildDomainSeparator(
|
||
bytes32 typeHash,
|
||
bytes32 nameHash,
|
||
bytes32 versionHash
|
||
) private view returns (bytes32) {
|
||
return
|
||
keccak256(
|
||
abi.encode(
|
||
typeHash,
|
||
nameHash,
|
||
versionHash,
|
||
block.chainid,
|
||
address(this)
|
||
)
|
||
);
|
||
}
|
||
|
||
/**
|
||
* @dev Returns the domain separator for the current chain.
|
||
*/
|
||
function _domainSeparatorV4() internal view returns (bytes32) {
|
||
if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) {
|
||
return _CACHED_DOMAIN_SEPARATOR;
|
||
} else {
|
||
return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
|
||
* function returns the hash of the fully encoded EIP712 message for this domain.
|
||
*
|
||
* This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
|
||
*
|
||
* ```solidity
|
||
* bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
|
||
* keccak256("Mail(address to,string contents)"),
|
||
* mailTo,
|
||
* keccak256(bytes(mailContents))
|
||
* )));
|
||
* address signer = ECDSA.recover(digest, signature);
|
||
* ```
|
||
*/
|
||
function _hashTypedDataV4(
|
||
bytes32 structHash
|
||
) internal view virtual returns (bytes32) {
|
||
return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
|
||
}
|
||
|
||
function checkSigner712(
|
||
address signer,
|
||
bytes32 structHash,
|
||
bytes memory signature
|
||
) public view {
|
||
require(signer != address(0), "[BE] invalid signer");
|
||
bytes32 digest = _hashTypedDataV4(structHash);
|
||
address recovered = ECDSA.recover(digest, signature);
|
||
require(recovered == signer, "[BE] invalid signature");
|
||
}
|
||
|
||
function checkSigner(
|
||
address signer,
|
||
bytes32 hash,
|
||
bytes memory signature
|
||
) public pure {
|
||
require(signer != address(0), "[BE] invalid signer");
|
||
require(signature.length == 65, "[BE] invalid signature length");
|
||
bytes32 ethSignedMessageHash = ECDSA.toEthSignedMessageHash(hash);
|
||
|
||
address recovered = ECDSA.recover(ethSignedMessageHash, signature);
|
||
require(recovered == signer, "[BE] invalid signature");
|
||
}
|
||
|
||
modifier signatureValid(bytes calldata signature) {
|
||
require(
|
||
!_usedSignatures[signature],
|
||
"[BE] signature used. please send another transaction with new signature"
|
||
);
|
||
_;
|
||
}
|
||
|
||
function _useSignature(bytes calldata signature) internal {
|
||
if (!_usedSignatures[signature]) {
|
||
_usedSignatures[signature] = true;
|
||
}
|
||
}
|
||
}
|
||
|
||
// File: contracts\utils\TimeChecker.sol
|
||
|
||
pragma solidity 0.8.10;
|
||
contract TimeChecker is Ownable {
|
||
uint256 private _duration;
|
||
|
||
constructor() {
|
||
_duration = 1 days;
|
||
}
|
||
|
||
modifier timeValid(uint256 time) {
|
||
require(
|
||
time + _duration >= block.timestamp,
|
||
"expired, please send another transaction with new signature"
|
||
);
|
||
_;
|
||
}
|
||
|
||
/**
|
||
* @dev Returns the max duration for function called by user
|
||
*/
|
||
function getDuration() external view returns (uint256 duration) {
|
||
return _duration;
|
||
}
|
||
|
||
/**
|
||
* @dev Change duration value
|
||
*/
|
||
function updateDuation(uint256 valNew) external onlyOwner {
|
||
_duration = valNew;
|
||
}
|
||
}
|
||
|
||
// File: contracts\activity\ClaimBoxFactory.sol
|
||
|
||
pragma solidity 0.8.10;
|
||
interface IClaimBox {
|
||
function batchMint(
|
||
address to,
|
||
uint256 count
|
||
) external returns (uint256[] memory);
|
||
}
|
||
|
||
contract ClaimBoxFactory is HasSignature, TimeChecker {
|
||
address public executor;
|
||
mapping(address => bool) public tokenSupported;
|
||
mapping(address => uint256) public claimHistory;
|
||
|
||
event BoxClaimed(
|
||
address indexed nftAddress,
|
||
address indexed to,
|
||
uint256 indexed nonce,
|
||
uint256 tokenId
|
||
);
|
||
|
||
constructor() HasSignature("ClaimBoxFactory", "1") {}
|
||
|
||
function addTokenSupport(address nftToken) external onlyOwner {
|
||
tokenSupported[nftToken] = true;
|
||
}
|
||
|
||
function removeTokenSupport(address nftToken) external onlyOwner {
|
||
tokenSupported[nftToken] = false;
|
||
}
|
||
|
||
/**
|
||
* @dev update executor
|
||
*/
|
||
function updateExecutor(address account) external onlyOwner {
|
||
require(account != address(0), "ClaimBoxFactory: address can not be zero");
|
||
executor = account;
|
||
}
|
||
|
||
function claim(
|
||
address nftAddress,
|
||
uint256 startTime,
|
||
uint256 saltNonce,
|
||
bytes calldata signature
|
||
) external signatureValid(signature) timeValid(startTime) {
|
||
require(tokenSupported[nftAddress], "ClaimBoxFactory: unsupported NFT");
|
||
address to = _msgSender();
|
||
require(claimHistory[to] == 0, "ClaimBoxFactory: claimed");
|
||
bytes32 criteriaMessageHash = getMessageHash(
|
||
to,
|
||
nftAddress,
|
||
startTime,
|
||
saltNonce
|
||
);
|
||
checkSigner(executor, criteriaMessageHash, signature);
|
||
uint256[] memory tokenIds = IClaimBox(nftAddress).batchMint(to, 1);
|
||
claimHistory[to] = tokenIds[0];
|
||
_useSignature(signature);
|
||
emit BoxClaimed(nftAddress, to, saltNonce, tokenIds[0]);
|
||
}
|
||
|
||
function getMessageHash(
|
||
address _to,
|
||
address _address,
|
||
uint256 _startTime,
|
||
uint256 _saltNonce
|
||
) public pure returns (bytes32) {
|
||
bytes memory encoded = abi.encodePacked(
|
||
_to,
|
||
_address,
|
||
_startTime,
|
||
_saltNonce
|
||
);
|
||
return keccak256(encoded);
|
||
}
|
||
}
|