ERC-721
Overview
Max Total Supply
0 BFMFERS
Holders
1,094
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
20 BFMFERSLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Minimal Proxy Contract for 0xb6bb22c822aafa28d34f6e5ab8f93b0896838131
Contract Name:
F0
Compiler Version
v0.8.4+commit.c7e474f2
Optimization Enabled:
Yes with 1000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // // // ███████╗░█████╗░░█████╗░████████╗░█████╗░██████╗░██╗░█████╗░ ░░░░░░ ███████╗░█████╗░ // ██╔════╝██╔══██╗██╔══██╗╚══██╔══╝██╔══██╗██╔══██╗██║██╔══██╗ ░░░░░░ ██╔════╝██╔══██╗ // █████╗░░███████║██║░░╚═╝░░░██║░░░██║░░██║██████╔╝██║███████║ █████╗ █████╗░░██║░░██║ // ██╔══╝░░██╔══██║██║░░██╗░░░██║░░░██║░░██║██╔══██╗██║██╔══██║ ╚════╝ ██╔══╝░░██║░░██║ // ██║░░░░░██║░░██║╚█████╔╝░░░██║░░░╚█████╔╝██║░░██║██║██║░░██║ ░░░░░░ ██║░░░░░╚█████╔╝ // ╚═╝░░░░░╚═╝░░╚═╝░╚════╝░░░░╚═╝░░░░╚════╝░╚═╝░░╚═╝╚═╝╚═╝░░╚═╝ ░░░░░░ ╚═╝░░░░░░╚════╝░ // // ## THE LAUNCHERS ## // The following humans have brought the FACTORIA F0 contract into existence through crowdfunding: // // 0x3B31925EeC78dA3CF15c4503604c13b0eEBC57e5 0.1742069 ETH Emblem Vault + Circuits of Value // 0x1593110441AB4C5F2C133F21B0743B2b43E297cB 0.1000000 ETH EmilySnow.eth // 0x334Ce5048e1Dc1cfCbF6A692e7ce6Bd950Ad82ec 0.0750000 ETH Las Vegas (@artsyassets) -- Shoutout to @skogard @chusla & Bob Marley // 0xCe5A9AA866ca82f06Df0d0868CB27C044A9086Ef 0.0731200 ETH Ramon Torres Batiz // 0x298b25385E67B471faa64CB1CA17F31684016629 0.0400000 ETH Apes4Good @Apes4Good + good frens @HeyGoodFrens // 0x701Ee76fc23173B1568f12dEa8a4122fbC55abD1 0.0222000 ETH Hansel Loh // 0x48A64aDbb34837F3Bf4d40BCc40C85bBCa1A3a84 0.0170000 ETH Arvind "POG" Alexander // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// pragma solidity ^0.8.4; //import 'hardhat/console.sol'; import "./F0ERC721Upgradeable.sol"; import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"; contract F0 is Initializable, ERC721Upgradeable, OwnableUpgradeable { /********************************************************** * * EVENTS * **********************************************************/ event Invited(bytes32 indexed key, bytes32 indexed cid); event NSUpdated(string name, string symbol); event Configured(Config config); event WithdrawerUpdated(Withdrawer withdrawer); /********************************************************** * * DATA STRUCTURES * **********************************************************/ struct Config { string placeholder; string base; uint64 supply; bool permanent; } struct Invite { uint128 price; uint64 start; uint64 limit; } struct Auth { bytes32 key; bytes32[] proof; } struct Withdrawer { address account; bool permanent; } /********************************************************** * * VARIABLES * **********************************************************/ mapping (bytes32 => Invite) public invite; Config public config; Withdrawer public withdrawer; uint public nextId; uint private feeUsed; string public URI; address public royalty; /********************************************************** * * INITIALIZER * **********************************************************/ function initialize(string memory name, string memory symbol, Config calldata _config) initializer external { __ERC721_init(name, symbol); __Ownable_init(); setConfig(_config); } /********************************************************** * * ADMIN * **********************************************************/ function setConfig(Config calldata _config) public onlyOwner { require(!config.permanent, "1"); config = _config; emit Configured(_config); } function setNS(string calldata name_, string calldata symbol_) external onlyOwner { require(!config.permanent, "2"); _name = name_; _symbol = symbol_; emit NSUpdated(_name, _symbol); } function setURI (string calldata _uri) external onlyOwner { URI = _uri; } function setWithdrawer(Withdrawer calldata _withdrawer) external onlyOwner { require(!withdrawer.permanent, "3"); withdrawer = _withdrawer; emit WithdrawerUpdated(_withdrawer); } function setInvite(bytes32 _key, bytes32 _cid, Invite calldata _invite) external onlyOwner { if (nextId==0) nextId = 1; // delay nextId setting until the first invite is made. invite[_key] = _invite; emit Invited(_key, _cid); } function withdraw() external payable { /**************************************************************************************************** * * Authorization * - Either the owner or the withdrawer (in case it's set) can initiate withdraw() * ****************************************************************************************************/ require(_msgSender() == owner() || _msgSender() == withdrawer.account, "4"); /**************************************************************************************************** * * Fee => 1% of revenue with 1ETH cap * - compute 1% * - if paying 1% exceeds the 1ETH total fee used, only pay enough to reach 1ETH * - update the total fee used * ****************************************************************************************************/ uint balance = address(this).balance; uint fee = 0; if (feeUsed < 1 ether) { fee = balance/100; if (feeUsed + fee > 1 ether) fee = 1 ether - feeUsed; feeUsed += fee; } /**************************************************************************************************** * * - if the withdrawer.account is not set (0x0 address), withdraw balance-fee to owner * - if the withdrawer.account is set, withdraw balance-fee to withdrawer.account * ****************************************************************************************************/ (bool sent1, ) = payable( withdrawer.account == address(0) ? owner() : withdrawer.account ).call{value: balance-fee}(""); require(sent1, "5"); /**************************************************************************************************** * * - the fee is sent to 0x502b2FE7Cc3488fcfF2E16158615AF87b4Ab5C41 * ****************************************************************************************************/ (bool sent2, ) = payable(address(0x502b2FE7Cc3488fcfF2E16158615AF87b4Ab5C41)).call{value: fee}(""); require(sent2, "6"); } /********************************************************** * * TOKEN * **********************************************************/ function mint(Auth calldata auth, uint _count) external payable { uint n = nextId; Invite memory i = invite[auth.key]; require(verify(auth, _msgSender()), "7"); require(i.price * _count == msg.value, "8"); require(i.start <= block.timestamp, "9"); require(balanceOf(_msgSender()) + _count <= i.limit, "10"); require(n+_count-1 <= config.supply, "11"); for(uint k=0; k<_count; k++) { _safeMint(_msgSender(), n+k); } nextId = n + _count; } function gift(address _receiver, uint _count) external onlyOwner { // first time: nextId is 0 => n is 1 // after that: nextId is 1 or greater => n is the same as nextId uint n = (nextId > 0 ? nextId : 1); require(_count > 0, "12"); require(n+_count-1 <= config.supply, "13"); for(uint k=0; k<_count; k++) { _safeMint(_receiver, n+k); } nextId = n + _count; } function burn(uint _tokenId) external { require(_isApprovedOrOwner(_msgSender(), _tokenId), "14"); _burn(_tokenId); } function tokenURI(uint tokenId) public view override(ERC721Upgradeable) returns (string memory) { require(tokenId > 0 && tokenId <= config.supply, "15"); if (bytes(config.base).length > 0) { return string(abi.encodePacked(config.base, _toString(tokenId), ".json")); } else { return bytes(config.placeholder).length > 0 ? config.placeholder : "ipfs://bafkreieqcdphcfojcd2vslsxrhzrjqr6cxjlyuekpghzehfexi5c3w55eq"; } } /********************************************************** * * ROYALTY * **********************************************************/ function setRoyalty(address _address) external onlyOwner { require(!config.permanent, "16"); royalty = _address; } function royaltyInfo(uint tokenId, uint value) external view returns (address receiver, uint256 royaltyAmount) { if (royalty == address(0)) { // Default: No royalty return (royalty, 0); } else { // If the royalty address is set, call the contract to get the royalty values (, bytes memory r) = royalty.staticcall(abi.encodeWithSignature("get(address,uint256,uint256)", address(this), tokenId, value)); return abi.decode(r, (address,uint)); } } function supportsInterface(bytes4 interfaceId) public view virtual override(ERC721Upgradeable) returns (bool) { return (interfaceId == 0x2a55205a || super.supportsInterface(interfaceId)); } /********************************************************** * * UTIL * **********************************************************/ function _toString(uint value) internal pure returns (string memory) { uint temp = value; uint digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits--; buffer[digits] = bytes1(uint8(48 + uint(value % 10))); value /= 10; } return string(buffer); } function verify(Auth calldata auth, address account) internal pure returns (bool) { if (auth.key == "") return true; bytes32 computedHash = keccak256(abi.encodePacked(account)); for (uint256 i = 0; i < auth.proof.length; i++) { bytes32 proofElement = auth.proof[i]; if (computedHash <= proofElement) { computedHash = keccak256(abi.encodePacked(computedHash, proofElement)); } else { computedHash = keccak256(abi.encodePacked(proofElement, computedHash)); } } return computedHash == auth.key; } }
// SPDX-License-Identifier: MIT /*************************************************************************************************** * * This file is identical to * @openzeppelin/contracts-upgradeable/token/ERC721/ERC721Upgradeable.sol * with one exception: * * _name and _symbol are "internal" types inatead of "private" * => so the inheriting F0.sol contract can dynamically update it using setNS() * ***************************************************************************************************/ pragma solidity ^0.8.0; import "@openzeppelin/contracts-upgradeable/token/ERC721/IERC721Upgradeable.sol"; import "@openzeppelin/contracts-upgradeable/token/ERC721/IERC721ReceiverUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/IERC721MetadataUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol"; import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable { using AddressUpgradeable for address; using StringsUpgradeable for uint256; // Token name string internal _name; // Token symbol string internal _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. */ function __ERC721_init(string memory name_, string memory symbol_) internal initializer { __Context_init_unchained(); __ERC165_init_unchained(); __ERC721_init_unchained(name_, symbol_); } function __ERC721_init_unchained(string memory name_, string memory symbol_) internal initializer { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) { return interfaceId == type(IERC721Upgradeable).interfaceId || interfaceId == type(IERC721MetadataUpgradeable).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 = ERC721Upgradeable.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721Upgradeable.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721Upgradeable.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721ReceiverUpgradeable.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 {} uint256[44] private __gap; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/ContextUpgradeable.sol"; import "../proxy/utils/Initializable.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function __Ownable_init() internal initializer { __Context_init_unchained(); __Ownable_init_unchained(); } function __Ownable_init_unchained() internal initializer { _setOwner(_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 { _setOwner(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"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } uint256[49] private __gap; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Modifier to protect an initializer function from being invoked twice. */ modifier initializer() { require(_initializing || !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../../utils/introspection/IERC165Upgradeable.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721Upgradeable is IERC165Upgradeable { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721ReceiverUpgradeable { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721Upgradeable.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721MetadataUpgradeable is IERC721Upgradeable { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @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 ContextUpgradeable is Initializable { function __Context_init() internal initializer { __Context_init_unchained(); } function __Context_init_unchained() internal initializer { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } uint256[50] private __gap; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev String operations. */ library StringsUpgradeable { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC165Upgradeable.sol"; import "../../proxy/utils/Initializable.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable { function __ERC165_init() internal initializer { __ERC165_init_unchained(); } function __ERC165_init_unchained() internal initializer { } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165Upgradeable).interfaceId; } uint256[50] private __gap; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165Upgradeable { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
{ "optimizer": { "enabled": true, "runs": 1000 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
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