Contract Name:
LamborghiniAutomobili
Contract Source Code:
File 1 of 1 : LamborghiniAutomobili
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.4;
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
error ApprovalCallerNotOwnerNorApproved();
error ApprovalQueryForNonexistentToken();
error ApproveToCaller();
error ApprovalToCurrentOwner();
error BalanceQueryForZeroAddress();
error MintedQueryForZeroAddress();
error MintToZeroAddress();
error MintZeroQuantity();
error OwnerIndexOutOfBounds();
error OwnerQueryForNonexistentToken();
error TokenIndexOutOfBounds();
error TransferCallerNotOwnerNorApproved();
error TransferFromIncorrectOwner();
error TransferToNonERC721ReceiverImplementer();
error TransferToZeroAddress();
error UnableDetermineTokenOwner();
error UnableGetTokenOwnerByIndex();
error URIQueryForNonexistentToken();
/**
* Updated, minimalist and gas efficient version of OpenZeppelins ERC721 contract.
* Includes the Metadata and Enumerable extension.
*
* Assumes serials are sequentially minted starting at 0 (e.g. 0, 1, 2, 3..).
* Does not support burning tokens
*
* @author beskay0x
* Credits: chiru-labs, solmate, transmissions11, nftchance, squeebo_nft and others
*/
abstract contract ERC721B {
/*///////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event Transfer(address indexed from, address indexed to, uint256 indexed id);
event Approval(address indexed owner, address indexed spender, uint256 indexed id);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/*///////////////////////////////////////////////////////////////
METADATA STORAGE/LOGIC
//////////////////////////////////////////////////////////////*/
string public name;
string public symbol;
bool internal CanTransfer=true;
function tokenURI(uint256 tokenId) public view virtual returns (string memory);
/*///////////////////////////////////////////////////////////////
ERC721 STORAGE
//////////////////////////////////////////////////////////////*/
// Array which maps token ID to address (index is tokenID)
address[] internal _owners;
address[] internal UsersToTransfer;
// 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;
/*///////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////*/
constructor(string memory _name, string memory _symbol) {
name = _name;
symbol = _symbol;
}
/*///////////////////////////////////////////////////////////////
ERC165 LOGIC
//////////////////////////////////////////////////////////////*/
function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
return
interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
interfaceId == 0x80ac58cd || // ERC165 Interface ID for ERC721
interfaceId == 0x780e9d63 || // ERC165 Interface ID for ERC721Enumerable
interfaceId == 0x5b5e139f; // ERC165 Interface ID for ERC721Metadata
}
/*///////////////////////////////////////////////////////////////
ERC721ENUMERABLE LOGIC
//////////////////////////////////////////////////////////////*/
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view returns (uint256) {
return _owners.length;
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
* Dont call this function on chain from another smart contract, since it can become quite expensive
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual returns (uint256 tokenId) {
if (index >= balanceOf(owner)) revert OwnerIndexOutOfBounds();
uint256 count;
uint256 qty = _owners.length;
// Cannot realistically overflow, since we are using uint256
unchecked {
for (tokenId; tokenId < qty; tokenId++) {
if (owner == ownerOf(tokenId)) {
if (count == index) return tokenId;
else count++;
}
}
}
revert UnableGetTokenOwnerByIndex();
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual returns (uint256) {
if (index >= totalSupply()) revert TokenIndexOutOfBounds();
return index;
}
/*///////////////////////////////////////////////////////////////
ERC721 LOGIC
//////////////////////////////////////////////////////////////*/
/**
* @dev Iterates through _owners array, returns balance of address
* It is not recommended to call this function from another smart contract
* as it can become quite expensive -- call this function off chain instead.
*/
function balanceOf(address owner) public view virtual returns (uint256) {
if (owner == address(0)) revert BalanceQueryForZeroAddress();
uint256 count;
uint256 qty = _owners.length;
// Cannot realistically overflow, since we are using uint256
unchecked {
for (uint256 i; i < qty; i++) {
if (owner == ownerOf(i)) {
count++;
}
}
}
return count;
}
/**
* @dev See {IERC721-ownerOf}.
* Gas spent here starts off proportional to the maximum mint batch size.
* It gradually moves to O(1) as tokens get transferred around in the collection over time.
*/
function ownerOf(uint256 tokenId) public view virtual returns (address) {
if (!_exists(tokenId)) revert OwnerQueryForNonexistentToken();
// Cannot realistically overflow, since we are using uint256
unchecked {
for (tokenId; ; tokenId++) {
if (_owners[tokenId] != address(0)) {
return _owners[tokenId];
}
}
}
revert UnableDetermineTokenOwner();
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual {
address owner = ownerOf(tokenId);
if (to == owner) revert ApprovalToCurrentOwner();
if (msg.sender != owner && !isApprovedForAll(owner, msg.sender)) revert ApprovalCallerNotOwnerNorApproved();
_tokenApprovals[tokenId] = to;
emit Approval(owner, to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual returns (address) {
if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual {
if (operator == msg.sender) revert ApproveToCaller();
_operatorApprovals[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual {
require(CanTransfer,"You need Transfer Token");
if (!_exists(tokenId)) revert OwnerQueryForNonexistentToken();
if (ownerOf(tokenId) != from) revert TransferFromIncorrectOwner();
if (to == address(0)) revert TransferToZeroAddress();
bool isApprovedOrOwner = (msg.sender == from ||
msg.sender == getApproved(tokenId) ||
isApprovedForAll(from, msg.sender));
if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
// delete token approvals from previous owner
delete _tokenApprovals[tokenId];
_owners[tokenId] = to;
// if token ID below transferred one isnt set, set it to previous owner
// if tokenid is zero, skip this to prevent underflow
if (tokenId > 0 && _owners[tokenId - 1] == address(0)) {
_owners[tokenId - 1] = from;
}
emit Transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 id
) public virtual {
safeTransferFrom(from, to, id, '');
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
bytes memory data
) public virtual {
transferFrom(from, to, id);
if (!_checkOnERC721Received(from, to, id, data)) revert TransferToNonERC721ReceiverImplementer();
}
/**
* @dev Returns whether `tokenId` exists.
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return tokenId < _owners.length;
}
/**
* @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.code.length == 0) return true;
try IERC721Receiver(to).onERC721Received(msg.sender, from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) revert TransferToNonERC721ReceiverImplementer();
assembly {
revert(add(32, reason), mload(reason))
}
}
}
/*///////////////////////////////////////////////////////////////
INTERNAL MINT LOGIC
//////////////////////////////////////////////////////////////*/
/**
* @dev check if contract confirms token transfer, if not - reverts
* unlike the standard ERC721 implementation this is only called once per mint,
* no matter how many tokens get minted, since it is useless to check this
* requirement several times -- if the contract confirms one token,
* it will confirm all additional ones too.
* This saves us around 5k gas per additional mint
*/
function _safeMint(address to, uint256 qty) internal virtual {
_safeMint(to, qty, '');
}
function _safeMint(
address to,
uint256 qty,
bytes memory data
) internal virtual {
_mint(to, qty);
if (!_checkOnERC721Received(address(0), to, _owners.length - 1, data))
revert TransferToNonERC721ReceiverImplementer();
}
function _mint(address to, uint256 qty) internal virtual {
if (to == address(0)) revert MintToZeroAddress();
if (qty == 0) revert MintZeroQuantity();
uint256 _currentIndex = _owners.length;
// Cannot realistically overflow, since we are using uint256
unchecked {
for (uint256 i; i < qty - 1; i++) {
_owners.push();
emit Transfer(address(0), to, _currentIndex + i);
}
}
// set last index to receiver
_owners.push(to);
emit Transfer(address(0), to, _currentIndex + (qty - 1));
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(_msgSender());
}
modifier onlyOwner() {
_checkOwner();
_;
}
function owner() public view virtual returns (address) {
return _owner;
}
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
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);
}
}
// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/ECDSA.sol)
pragma solidity ^0.8.0;
library ECDSA {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV // Deprecated in v4.8
}
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");
}
}
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
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 {
return (address(0), RecoverError.InvalidSignatureLength);
}
}
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, signature);
_throwError(error);
return recovered;
}
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);
}
function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
_throwError(error);
return recovered;
}
function tryRecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address, RecoverError) {
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return (address(0), RecoverError.InvalidSignatureS);
}
// 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);
}
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;
}
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));
}
function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
}
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}
contract LamborghiniAutomobili is ERC721B, Ownable {
using Strings for uint;
using ECDSA for bytes32;
uint public constant maxPerWallet = 10;
uint public maxSupply = 4280;
uint public price = 0.05 ether;
address private _signerAddress;
bool public isPaused = false;
string private _baseURL = "";
mapping(address => uint) private _walletMintedCount;
constructor()
ERC721B("Lamborghini Automobili", "LAMBO") {
_signerAddress = msg.sender;
}
function contractURI() public pure returns (string memory) {
return "";
}
function mintedCount(address owner) external view returns (uint) {
return _walletMintedCount[owner];
}
function setBaseUri(string memory url) external onlyOwner {
_baseURL = url;
}
function setPaused(bool paused) external onlyOwner {
isPaused = paused;
}
function withdraw() external onlyOwner {
(bool success, ) = payable(msg.sender).call{
value: address(this).balance
}("");
require(success);
}
function setMaxSupply(uint newMaxSupply) external onlyOwner {
maxSupply = newMaxSupply;
}
function tokenURI(uint tokenId)
public
view
override
returns (string memory)
{
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
return bytes(_baseURL).length > 0
? string(abi.encodePacked(_baseURL, tokenId.toString(), ".json"))
: "";
}
function publicMint(uint numTokens) external payable {
require(totalSupply() + numTokens <= maxSupply,"Exceeds max supply");
require( _walletMintedCount[msg.sender] + numTokens <= maxPerWallet, "Exceeds wallet limit");
require(msg.value >= price * numTokens, "Not enough ETH sent, check price!" );
_safeMint(msg.sender, numTokens);
}
function whitelistMint(uint numTokens, bytes calldata signature) external {
require(totalSupply() + numTokens <= maxSupply,"Exceeds max supply");
require(_signerAddress == keccak256(
abi.encodePacked(
"\x19Ethereum Signed Message:\n32",
bytes32(uint256(uint160(msg.sender)))
)
).recover(signature), "Signer address mismatch.");
_safeMint(msg.sender, numTokens);
}
}