文件 1 的 1:LuckyCatz.sol
pragma solidity ^0.8.9;
interface IERC165
{
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
interface IERC721 is IERC165
{
event Transfer( address indexed from, address indexed to, uint256 indexed tokenId);
event Approval( address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function balanceOf( address owner) external view returns (uint256 balance);
function ownerOf( uint256 tokenId) external view returns (address owner);
function safeTransferFrom( address from, address to, uint256 tokenId) external;
function transferFrom( address from, address to, uint256 tokenId) external;
function approve( address to, uint256 tokenId) external;
function getApproved( uint256 tokenId) external view returns (address operator);
function setApprovalForAll(address operator, bool _approved) external;
function isApprovedForAll( address owner, address operator) external view returns (bool);
function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data) external;
}
interface IERC721Metadata is IERC721
{
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function tokenURI(uint256 tokenId) external view returns (string memory);
}
interface IERC721Enumerable is IERC721
{
function totalSupply() external view returns (uint256);
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
function tokenByIndex(uint256 index) external view returns (uint256);
}
interface IERC721Receiver
{
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}
abstract contract ERC165 is IERC165
{
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool)
{
return (interfaceId == type(IERC165).interfaceId);
}
}
abstract contract Context
{
function _msgSender() internal view virtual returns (address)
{
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata)
{
this;
return msg.data;
}
}
abstract contract Ownable is Context
{
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor ()
{
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view virtual returns (address)
{
return _owner;
}
modifier onlyOwner()
{
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner
{
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner
{
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, Ownable
{
using Address for address;
using Strings for uint256;
string private _name;
string private _symbol;
mapping(uint256 => address) internal _owners;
mapping(address => uint256) internal _balances;
mapping(uint256 => address) private _tokenApprovals;
mapping(address => mapping(address => bool)) private _operatorApprovals;
constructor(string memory name_, string memory symbol_)
{
_name = name_;
_symbol = symbol_;
}
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool)
{
return interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
function balanceOf(address owner) public view virtual override returns (uint256)
{
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
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;
}
function name() public view virtual override returns (string memory)
{
return _name;
}
function symbol() public view virtual override returns (string memory)
{
return _symbol;
}
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())) : "";
}
function _baseURI() internal view virtual returns (string memory)
{
return "";
}
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 || ERC721.isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all");
_approve(to, tokenId);
}
function getApproved(uint256 tokenId) public view virtual override returns (address)
{
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
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);
}
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool)
{
return _operatorApprovals[owner][operator];
}
function transferFrom(address from, address to, uint256 tokenId) public virtual override
{
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override
{
safeTransferFrom(from, to, tokenId, "");
}
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);
}
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");
}
function _exists(uint256 tokenId) internal view virtual returns (bool)
{
return _owners[tokenId] != address(0);
}
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 || ERC721.isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual
{
_safeMint(to, tokenId, "");
}
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");
}
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);
}
function _batchMint(address to, uint256[] memory tokenIds) internal virtual
{
require(to != address(0), "ERC721: mint to the zero address");
_balances[to] += tokenIds.length;
for (uint256 i=0; i < tokenIds.length; i++)
{
require(!_exists(tokenIds[i]), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenIds[i]);
_owners[tokenIds[i]] = to;
emit Transfer(address(0), to, tokenIds[i]);
}
}
function _burn(uint256 tokenId) internal virtual
{
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(address from, address to, uint256 tokenId) internal virtual
{
require(ERC721.ownerOf(tokenId)==from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
function _approve(address to, uint256 tokenId) internal virtual
{
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(address from,address to,uint256 tokenId,bytes memory _data) private returns (bool)
{
if (to.isContract())
{
try
IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data)
returns (bytes4 retval)
{
return retval == IERC721Receiver(to).onERC721Received.selector;
}
catch (bytes memory reason)
{
if (reason.length==0)
{
revert("ERC721: transfer to non ERC721Receiver implementer");
}
else
{
assembly { revert(add(32, reason), mload(reason)) }
}
}
}
else
{
return true;
}
}
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual
{
}
}
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable
{
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
mapping(uint256 => uint256) private _ownedTokensIndex;
mapping(uint256 => uint256) private _allTokensIndex;
uint256[] private _allTokens;
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool)
{
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
function totalSupply() public view virtual override returns (uint256)
{
return _allTokens.length;
}
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];
}
function tokenByIndex(uint256 index) public view virtual override returns (uint256)
{
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
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);
}
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private
{
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
function _addTokenToAllTokensEnumeration(uint256 tokenId) private
{
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private
{
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId;
_ownedTokensIndex[lastTokenId] = tokenIndex;
}
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private
{
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId;
_allTokensIndex[lastTokenId] = tokenIndex;
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
}
library Strings
{
bytes16 private constant alphabet = "0123456789abcdef";
function toString(uint256 value) internal pure returns (string memory)
{
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);
}
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);
}
function toHexString(uint256 value, uint256 length) internal pure returns (string memory)
{
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i=2*length+1; i>1; --i)
{
buffer[i] = alphabet[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
library Address
{
function isContract(address account) internal view returns (bool)
{
uint256 size;
assembly { size := extcodesize(account) }
return size > 0;
}
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");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory)
{
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory)
{
return functionCallWithValue(target, data, 0, errorMessage);
}
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");
}
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);
}
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory)
{
return functionStaticCall(target, data, "Address: low-level static call failed");
}
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);
}
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory)
{
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
function functionDelegateCall(address target, bytes memory data, 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);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory)
{
if (success)
{
return returndata;
}
else
{
if (returndata.length > 0)
{
assembly
{
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
}
else
{
revert(errorMessage);
}
}
}
}
contract LuckyCatz is ERC721Enumerable
{
using Address for address;
using Strings for uint256;
modifier callerIsUser()
{
require(tx.origin == msg.sender, "The caller is another contract");
_;
}
event onWidthdrawal(address from, address to, uint256 amount);
event onMaxMintPerWallet(uint256 lastMaxCount, uint256 newMaxCount);
uint256 private salesDate = 1634482800;
uint256 private salesPrice = 0.07 ether;
uint256 private totalTokens = 7777;
uint256 private leftTokenCount = totalTokens;
uint256 private mintedTokenCount = 0;
uint256 private maxMintPerWallet = 7;
string private baseURI = 'https://ipfs.io/ipfs/QmUaTJ3LvTr9FGVBDLwEi9nuyJwA2vK2tmVwXQYPbWRw4w/';
address private ownerWallet;
uint256 private maxReservableTokenCount = 777;
uint256 private totalReserved = 0;
mapping(address => uint256) private walletMintCounts;
mapping(address => uint256) private walletMintedTokenIds;
constructor() ERC721("Lucky Catz", "LUCKYCATZ")
{
ownerWallet = msg.sender;
}
function nftTransfer(address to, uint256 tokenId) external
{
address fromAddr = _msgSender();
require(_isApprovedOrOwner(fromAddr, tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(fromAddr, to, tokenId);
require(isERC721ReceivedCheck(fromAddr, to, tokenId, ""), "ERC721: transfer to non ERC721Receiver implementer");
}
function isERC721ReceivedCheck(address from,address to,uint256 tokenId,bytes memory _data) private returns (bool)
{
if (to.isContract())
{
try
IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data)
returns (bytes4 retval)
{
return retval == IERC721Receiver(to).onERC721Received.selector;
}
catch (bytes memory reason)
{
if (reason.length==0)
{
revert("ERC721: transfer to non ERC721Receiver implementer");
}
else
{
assembly { revert(add(32, reason), mload(reason)) }
}
}
}
else
{
return true;
}
}
function setBaseTokenURI(string memory newUri) external onlyOwner
{
baseURI = newUri;
}
function addAvailableTokens(uint256 extraAmount) external onlyOwner
{
totalTokens += extraAmount;
}
function setSalesDate(uint256 newSalesDate) external onlyOwner
{
salesDate = newSalesDate;
}
function baseTokenURI() external view returns (string memory)
{
return baseURI;
}
function getAvailableTokens() external view returns (uint256)
{
return leftTokenCount;
}
function getSalesPrice() external view returns (uint256)
{
return salesPrice;
}
function setSalesPrice(uint256 newSalesPrice) external onlyOwner
{
salesPrice = newSalesPrice;
}
function setmaxMintPerWallet(uint256 newMaxCount) external
{
uint256 lastMaxCount = maxMintPerWallet;
maxMintPerWallet = newMaxCount;
emit onMaxMintPerWallet(lastMaxCount, maxMintPerWallet);
}
function _baseURI() internal view virtual override returns (string memory)
{
return baseURI;
}
function getTokenIdsByWallet(address walletAddress) external view returns(uint256[] memory)
{
require(walletAddress!=address(0), "BlackHole wallet is not a real owner");
uint256 count = balanceOf(walletAddress);
uint256[] memory result = new uint256[](count);
for (uint256 i=0; i<count; i++)
{
result[i] = tokenOfOwnerByIndex(walletAddress, i);
}
return result;
}
function setMaxReserve(uint256 newAmount) external onlyOwner
{
maxReservableTokenCount = newAmount;
}
function reserveSomeTokens(uint256 amount) external onlyOwner
{
require(amount <= 200, "Reserve is limited to 200 per call at max");
require(leftTokenCount >= amount, "Not enough tokens left to reserve anymore");
require((totalReserved+amount) <= maxReservableTokenCount, "Too many to reserve. Reduce the amount");
for (uint256 i=0; i < amount; i++)
{
totalReserved++;
walletMintCounts[msg.sender]++;
mintedTokenCount++;
leftTokenCount--;
_mint(msg.sender, mintedTokenCount);
}
}
function mint() external payable callerIsUser
{
require(block.timestamp >= salesDate, "Sales did not start yet");
require(msg.value >= salesPrice, "Send exact Amount to claim your Nft");
require(walletMintCounts[msg.sender] <= maxMintPerWallet, "You cannot claim more tokens");
require(leftTokenCount > 0, "No tokens left to be claimed");
walletMintCounts[msg.sender]++;
mintedTokenCount++;
leftTokenCount--;
_mint(msg.sender, mintedTokenCount);
}
function batchMint(uint256 quantity) external payable callerIsUser
{
require(block.timestamp >= salesDate, "Sales did not start yet");
require(msg.value == salesPrice * quantity, "Send exact Amount to claim your Nfts");
require(walletMintCounts[msg.sender] + quantity <= maxMintPerWallet, "You cannot claim that much tokens");
require(leftTokenCount >= quantity, "No tokens left to be claimed");
for (uint256 i=0; i < quantity; i++)
{
walletMintCounts[msg.sender]++;
mintedTokenCount++;
leftTokenCount--;
_mint(msg.sender, mintedTokenCount);
}
}
function withdraw() external onlyOwner
{
address fromAddr = address(this);
uint256 balance = fromAddr.balance;
payable(ownerWallet).transfer(fromAddr.balance);
emit onWidthdrawal(fromAddr, ownerWallet, balance);
}
}