Contract Source Code:
// SPDX-License-Identifier: UNLICENSE
// Creator: 0xYeety; Based Pixel Labs/Yeety Labs; 1 yeet = 1 yeet; 1 cope = 1 cope
pragma solidity ^0.8.7;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol";
import "./ERC721Storage.sol";
import "./ENSResolver.sol";
import "./RoyaltyReceiver.sol";
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contract CopiumDen is Ownable, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
string public PROVENANCE;
bool provenanceSet;
string private contractURI_;
uint256 public mintPrice;
uint256 public maxPossibleSupply;
uint256 public maxAllowedMints;
uint256 royaltyBasisPoints;
address public immutable currency;
address public immutable wrappedNativeCoinAddress;
RoyaltyReceiver royaltyReceiver;
ENSResolver resolver;
ERC721Storage storageLayer;
address private signerAddress;
bool public _metadataFrozen = false;
mapping(address => bool) public agreements;
uint256 numAgreements = 0;
enum MintStatus {
NotStarted,
Public,
Finished
}
MintStatus public mintStatus = MintStatus.NotStarted;
uint256 numPayees;
mapping(uint256 => address) private indexer;
mapping(address => uint256) public earningsSplit;
mapping(address => uint256) public balances;
//////////
mapping(uint256 => mapping(address => uint256)) public listings;
struct OfferData {
string openBrk;
address addr;
uint256 offer;
uint256 pos;
string closeBrk;
}
mapping(uint256 => mapping(address => uint256)) public offers;
mapping(uint256 => mapping(uint256 => address)) public offerAddressPositions;
mapping(uint256 => uint256) public offerCounts;
event Sale(address _from, address _to, uint256 _price);
/**
* @dev Throws if called by any account other than a royalty receiver/payee.
*/
modifier onlyPayee() {
_isPayee();
_;
}
/**
* @dev Throws if the sender is not on the royalty receiver/payee list.
*/
function _isPayee() internal view virtual {
require(earningsSplit[_msgSender()] > 0, "not a royalty payee");
}
constructor(
string memory _name,
string memory _symbol,
uint256 _maxPossibleSupply,
uint256 _mintPrice,
uint256 _royaltyBasisPoints,
uint256 _maxAllowedMints,
address _currency,
address _wrappedNativeCoinAddress,
address _royaltyReceiverAddress,
address[] memory payees,
uint256[] memory percentages
) {
require(payees.length == percentages.length, "length mismatch");
numPayees = payees.length;
for (uint i = 0; i < numPayees; i++) {
indexer[i] = payees[i];
earningsSplit[payees[i]] = percentages[i];
}
maxPossibleSupply = _maxPossibleSupply;
mintPrice = _mintPrice;
royaltyBasisPoints = _royaltyBasisPoints;
maxAllowedMints = _maxAllowedMints;
currency = _currency;
wrappedNativeCoinAddress = _wrappedNativeCoinAddress;
resolver = new ENSResolver();
storageLayer = new ERC721Storage(
_name,
_symbol,
_maxAllowedMints,
_mintPrice,
_maxPossibleSupply,
_currency,
_wrappedNativeCoinAddress
);
royaltyReceiver = RoyaltyReceiver(payable(_royaltyReceiverAddress));
}
function _ENSResolverAddress() public view returns (address) {
return address(resolver);
}
function _ERC721StorageAddress() public view returns (address) {
return address(storageLayer);
}
function _RoyaltyReceiverAddress() public view returns (address) {
return address(royaltyReceiver);
}
function setContractURI(string memory _contractURI) public onlyOwner {
contractURI_ = _contractURI;
}
function contractURI() public view returns (string memory) {
return contractURI_;
}
/**
* @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 ||
interfaceId == type(IERC721Enumerable).interfaceId ||
super.supportsInterface(interfaceId);
}
function setProvenanceHash(string memory provenanceHash) public onlyOwner {
require(!provenanceSet);
PROVENANCE = provenanceHash;
provenanceSet = true;
}
function freezeMetadata() public onlyOwner {
_metadataFrozen = true;
}
function metadataFrozen() public view returns (bool) {
return _metadataFrozen;
}
function setBaseURI(string memory baseURI) public onlyOwner {
require(!_metadataFrozen, "mf");
storageLayer._setBaseURI(baseURI);
}
function revealMetadata() public onlyOwner {
storageLayer._revealMetadata();
}
function changeMintStatus(MintStatus _status) external onlyOwner {
require(_status != MintStatus.NotStarted && mintStatus != MintStatus.NotStarted);
mintStatus = _status;
}
function agreeToMint() external onlyPayee {
require(!(agreements[msg.sender]), "already agreed");
agreements[msg.sender] = true;
numAgreements += 1;
if (numAgreements == numPayees) {
mintStatus = MintStatus.Public;
}
}
function giftMint(uint amount, address to) public payable {
_mint(amount, address(msg.sender), to);
}
function giftMintENS(uint amount, string memory ENSAddr) public payable {
address to = resolver.resolve(ENSAddr);
_mint(amount, address(msg.sender), to);
}
function mintPublic(uint amount) public payable {
_mint(amount, address(0), address(msg.sender));
}
function _mint(uint _amount, address _from, address _to) internal {
require(mintStatus == MintStatus.Public, "s");
storageLayer.mintFn(msg.sender, _amount, _from, _to, msg.value);
uint256 value = msg.value;
uint256 split = value/100;
for (uint256 i = 0; i < numPayees; i++) {
uint256 allocation = split*(earningsSplit[indexer[i]]);
balances[indexer[i]] += allocation;
value -= allocation;
}
balances[indexer[0]] += value;
if (totalSupply() == maxPossibleSupply) {
mintStatus = MintStatus.Finished;
}
}
// Marketplace functionality ====================
function MKT_list(uint256 tokenId, uint256 price) public {
require(ownerOf(tokenId) == msg.sender, "mbo");
require(price > 0, "zp");
listings[tokenId][msg.sender] = price;
}
function MKT_deList(uint256 tokenId) public {
require(ownerOf(tokenId) == msg.sender && listings[tokenId][msg.sender] > 0, "mbo;nl");
listings[tokenId][msg.sender] = 0;
}
function MKT_buy(uint256 tokenId) public payable {
address tokenOwner = ownerOf(tokenId);
require(listings[tokenId][tokenOwner] > 0 && tokenOwner != msg.sender, "nl;io");
require(listings[tokenId][tokenOwner] == msg.value, "wp");
listings[tokenId][tokenOwner] = 0;
payForSale(msg.value, tokenOwner);
storageLayer.transferBySale(tokenOwner, msg.sender, tokenId);
emit Sale(tokenOwner, msg.sender, msg.value);
}
function MKT_isListed(uint256 tokenId) public view returns (bool) {
return (listings[tokenId][ownerOf(tokenId)] > 0);
}
function MKT_getPrice(uint256 tokenId) public view returns (uint256) {
require(listings[tokenId][ownerOf(tokenId)] > 0, "nl");
return listings[tokenId][ownerOf(tokenId)];
}
//////////
function MKT_makeOffer(uint256 tokenId, uint256 price) public payable {
require(ownerOf(tokenId) != msg.sender, "io");
// Check if there is already an offer
uint256 currentOffer = offers[tokenId][msg.sender];
// Check that the supplied funds are sufficient to update the price
require(currentOffer + msg.value == price, "ifa");
if (currentOffer == 0) {
offerAddressPositions[tokenId][offerCounts[tokenId]] = msg.sender;
offerCounts[tokenId] += 1;
}
offers[tokenId][msg.sender] = price;
}
function mkt_deleteOfferInternal(uint256 tokenId, address offerer, uint256 position) private {
offers[tokenId][offerer] = 0;
uint256 lastIndex = offerCounts[tokenId] - 1;
offerAddressPositions[tokenId][position] = offerAddressPositions[tokenId][lastIndex];
offerAddressPositions[tokenId][lastIndex] = address(0);
offerCounts[tokenId] -= 1;
}
function MKT_cancelOffer(uint256 tokenId, uint256 position) public {
uint256 currentOffer = offers[tokenId][msg.sender];
require(offerAddressPositions[tokenId][position] == msg.sender && currentOffer != 0, "no/odne");
mkt_deleteOfferInternal(tokenId, msg.sender, position);
(bool success, ) = payable(msg.sender).call{value: currentOffer}("");
require(success, "tf");
}
function MKT_acceptOffer(uint256 tokenId, address offerer, uint256 price, uint256 position) public {
uint256 currentOffer = offers[tokenId][offerer];
if (msg.sender == offerer && offerer == ownerOf(tokenId)) {
mkt_deleteOfferInternal(tokenId, msg.sender, position);
(bool success, ) = payable(msg.sender).call{value: currentOffer}("");
require(success, "tf");
}
else {
require(ownerOf(tokenId) == msg.sender && currentOffer != 0
&& currentOffer == price && offerer == offerAddressPositions[tokenId][position], "mbo/odne/wp1/wp2");
mkt_deleteOfferInternal(tokenId, offerer, position);
payForSale(currentOffer, msg.sender);
listings[tokenId][msg.sender] = 0;
storageLayer.transferBySale(msg.sender, offerer, tokenId);
emit Sale(msg.sender, offerer, currentOffer);
}
}
function MKT_getOffers(uint256 tokenId) public view returns (OfferData[] memory) {
OfferData[] memory offerList = new OfferData[](offerCounts[tokenId]);
for (uint i = 0; i < offerCounts[tokenId]; i++) {
address addr_i = offerAddressPositions[tokenId][i];
OfferData memory od = OfferData({openBrk: "[", addr: addr_i, offer: offers[tokenId][addr_i], pos: i, closeBrk: "]"});
offerList[i] = od;
}
return offerList;
}
function MKT_getHighestOffer(uint256 tokenId) public view returns (OfferData memory) {
uint256 highestOffer = 0;
address highestOfferAddress = address(0);
uint256 highestPos = 0;
for (uint i = 0; i < offerCounts[tokenId]; i++) {
address addr_i = offerAddressPositions[tokenId][i];
if (offers[tokenId][addr_i] > highestOffer) {
highestOffer = offers[tokenId][addr_i];
highestOfferAddress = addr_i;
highestPos = i;
}
}
return OfferData({openBrk: "[", addr: highestOfferAddress, offer: highestOffer, pos: highestPos, closeBrk: "]"});
}
////////////////////////////////////////
function payForSale(uint256 paymentValue, address paymentReceiver) private {
uint256 royaltyPayment = ((paymentValue/100)*royaltyBasisPoints)/100;
(bool success1, ) = payable(address(royaltyReceiver)).call{value: royaltyPayment}("");
require(success1, "t1f");
(bool success2, ) = payable(paymentReceiver).call{value: paymentValue - royaltyPayment}("");
require(success2, "t2f");
}
receive() external payable {
mintPublic(msg.value / mintPrice);
}
function withdraw() external onlyPayee() {
uint256 amount = balances[msg.sender];
balances[msg.sender] = 0;
(bool success, ) = payable(msg.sender).call{value:amount}("");
require(success, "tf");
}
function withdrawTokens(address tokenAddress) external onlyOwner() {
IERC20(tokenAddress).transfer(msg.sender, IERC20(tokenAddress).balanceOf(address(this)));
}
////////////////////////////////////////
// ERC721 Required Functionality
function balanceOf(address owner) public view virtual override returns (uint256) {
return storageLayer.balanceOf(owner);
}
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public override {
storageLayer.safeTransferFrom(msg.sender, from, to, tokenId, _data);
}
function safeTransferFrom(address from, address to, uint256 tokenId) public override {
storageLayer.safeTransferFrom(msg.sender, from, to, tokenId);
}
function transferFrom(address from, address to, uint256 tokenId) public override {
storageLayer.transferFrom(msg.sender, from, to, tokenId);
}
function approve(address to, uint256 tokenId) public override {
storageLayer.approve(msg.sender, to, tokenId);
}
function setApprovalForAll(address operator, bool approved) public override {
storageLayer.setApprovalForAll(msg.sender, operator, approved);
}
function getApproved(uint256 tokenId) public view override returns (address) {
return storageLayer.getApproved(tokenId);
}
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return storageLayer.isApprovedForAll(owner, operator);
}
//////////
// Extra 721A Functionality
function totalSupply() public view virtual override returns (uint256) {
return storageLayer.totalSupply();
}
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
return storageLayer.ownerOf(tokenId);
}
function name() external view override returns (string memory) {
return storageLayer.name();
}
function symbol() external view override returns (string memory) {
return storageLayer.symbol();
}
function tokenByIndex(uint256 index) external view override returns (uint256) {
return storageLayer.tokenByIndex(index);
}
function tokenOfOwnerByIndex(address owner, uint256 index) external view override returns (uint256) {
return storageLayer.tokenOfOwnerByIndex(owner, index);
}
function tokenURI(uint256 tokenId) external view override returns (string memory) {
return storageLayer.tokenURI(tokenId);
}
////////////////////////////////////////
function emitTransfer(address _from, address _to, uint256 _tokenId) public {
emit Transfer(_from, _to, _tokenId);
}
function emitApproval(address _owner, address _approved, uint256 _tokenId) public {
emit Approval(_owner, _approved, _tokenId);
}
function emitApprovalForAll(address _owner, address _operator, bool _approved) public {
emit ApprovalForAll(_owner, _operator, _approved);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev 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);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must 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 Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @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);
}
// SPDX-License-Identifier: UNLICENSE
// Creator: 0xYeety; Based Pixel Labs/Yeety Labs; 1 yeet = 1 yeet; 1 cope = 1 cope
pragma solidity ^0.8.7;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata and Enumerable extension. Built to optimize for lower gas during batch mints.
*
* Assumes serials are sequentially minted starting at 0 (e.g. 0, 1, 2, 3..).
*
* Does not support burning tokens to address(0).
*/
contract ERC721Storage is Ownable {
using Address for address;
using Strings for uint256;
struct TokenOwnership {
address addr;
uint64 startTimestamp;
}
struct AddressData {
uint128 balance;
uint128 numberMinted;
}
uint256 private currentIndex = 0;
uint256 internal immutable maxBatchSize;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Base URI
string private _baseURI;
bool revealed = false;
// Mapping from token ID to ownership details
// An empty struct value does not necessarily mean the token is unowned. See ownershipOf implementation for details.
mapping(uint256 => TokenOwnership) private _ownerships;
// Mapping owner address to address data
mapping(address => AddressData) private _addressData;
// 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;
uint256 private mintPrice;
uint256 private maxPossibleSupply;
uint256 private maxAllowedMints;
address private immutable currency;
address private immutable wrappedNativeCoinAddress;
/**
* @dev
* `maxBatchSize` refers to how much a minter can mint at a time.
*/
constructor(
string memory name_,
string memory symbol_,
uint256 maxBatchSize_,
uint256 mintPrice_,
uint256 maxPossibleSupply_,
address currency_,
address wrappedNativeCoinAddress_
) {
require(maxBatchSize_ > 0, "b");
_name = name_;
_symbol = symbol_;
maxBatchSize = maxBatchSize_;
mintPrice = mintPrice_;
maxPossibleSupply = maxPossibleSupply_;
currency = currency_;
wrappedNativeCoinAddress = wrappedNativeCoinAddress_;
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual returns (uint256) {
return currentIndex;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual returns (uint256) {
require(index < totalSupply(), "g");
return index;
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
* This read function is O(totalSupply). If calling from a separate contract, be sure to test gas first.
* It may also degrade with extremely large collection sizes (e.g >> 10000), test for your use case.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual returns (uint256) {
require(index < balanceOf(owner), "b");
uint256 numMintedSoFar = totalSupply();
uint256 tokenIdsIdx = 0;
address currOwnershipAddr = address(0);
for (uint256 i = 0; i < numMintedSoFar; i++) {
TokenOwnership memory ownership = _ownerships[i];
if (ownership.addr != address(0)) {
currOwnershipAddr = ownership.addr;
}
if (currOwnershipAddr == owner) {
if (tokenIdsIdx == index) {
return i;
}
tokenIdsIdx++;
}
}
revert("u");
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual returns (uint256) {
require(owner != address(0), "0");
return uint256(_addressData[owner].balance);
}
function _numberMinted(address owner) internal view returns (uint256) {
require(owner != address(0), "0");
return uint256(_addressData[owner].numberMinted);
}
function ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
require(_exists(tokenId), "t");
uint256 lowestTokenToCheck;
if (tokenId >= maxBatchSize) {
lowestTokenToCheck = tokenId - maxBatchSize + 1;
}
for (uint256 curr = tokenId; curr >= lowestTokenToCheck; curr--) {
TokenOwnership memory ownership = _ownerships[curr];
if (ownership.addr != address(0)) {
return ownership;
}
}
revert("o");
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual returns (address) {
return ownershipOf(tokenId).addr;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual returns (string memory) {
require(_exists(tokenId), "z");
if (revealed) {
return bytes(_baseURI).length > 0 ? string(abi.encodePacked(_baseURI, "/", tokenId.toString(), ".json")) : "";
}
else {
return _baseURI;
}
}
/**
* @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() public view virtual returns (string memory) {
return _baseURI;
}
/**
* @dev Internal function to set the base URI for all token IDs. It is
* automatically added as a prefix to the value returned in {tokenURI},
* or to the token ID if {tokenURI} is empty.
*/
function _setBaseURI(string memory baseURI_) public virtual onlyOwner {
_baseURI = baseURI_;
}
function _revealMetadata() public virtual onlyOwner {
revealed = true;
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address msgSender, address to, uint256 tokenId) public onlyOwner {
address owner = ownerOf(tokenId);
require(to != owner, "o");
require(
msgSender == owner || isApprovedForAll(owner, msgSender),
"a"
);
_approve(to, tokenId, owner);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view returns (address) {
require(_exists(tokenId), "a");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address msgSender, address operator, bool approved) public onlyOwner {
require(operator != msgSender, "a");
_operatorApprovals[msgSender][operator] = approved;
// emit ApprovalForAll(msgSender, operator, approved);
ERC721TopLevel(msg.sender).emitApprovalForAll(msgSender, 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 msgSender,
address from,
address to,
uint256 tokenId
) public onlyOwner {
_transfer(msgSender, from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address msgSender,
address from,
address to,
uint256 tokenId
) public onlyOwner {
safeTransferFrom(msgSender, from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address msgSender,
address from,
address to,
uint256 tokenId,
bytes memory _data
) public onlyOwner {
_transfer(msgSender, from, to, tokenId);
require(
_checkOnERC721Received(msgSender, from, to, tokenId, _data),
"z"
);
}
/**
* @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`),
*/
function _exists(uint256 tokenId) internal view returns (bool) {
return tokenId < currentIndex;
}
function _safeMint(address msgSender, address from, address to, uint256 quantity) public onlyOwner {
_safeMint(msgSender, from, to, quantity, "");
}
/**
* @dev Mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `quantity` cannot be larger than the max batch size.
*
* Emits either one or two {Transfer} events, depending on the
* values of {from} and {to}.
*/
function _safeMint(
address msgSender,
address from,
address to,
uint256 quantity,
bytes memory _data
) public onlyOwner {
uint256 startTokenId = currentIndex;
require(to != address(0), "0");
// We know if the first token in the batch doesn't exist, the other ones don't as well, because of serial ordering.
require(!_exists(startTokenId), "a");
require(quantity <= maxBatchSize, "m");
if (from != address(0)) {
_beforeTokenTransfers(address(0), from, startTokenId, quantity);
}
if (from != to) {
_beforeTokenTransfers(from, to, startTokenId, quantity);
}
AddressData memory addressData = _addressData[to];
_addressData[to] = AddressData(
addressData.balance + uint128(quantity),
addressData.numberMinted + uint128(quantity)
);
_ownerships[startTokenId] = TokenOwnership(to, uint64(block.timestamp));
uint256 updatedIndex = startTokenId;
for (uint256 i = 0; i < quantity; i++) {
if (from != address(0)) {
ERC721TopLevel(msg.sender).emitTransfer(address(0), from, updatedIndex);
}
if (from != to) {
ERC721TopLevel(msg.sender).emitTransfer(from, to, updatedIndex);
}
require(
_checkOnERC721Received(msgSender, address(0), from, updatedIndex, _data) && _checkOnERC721Received(msgSender, from, to, updatedIndex, _data),
"z"
);
updatedIndex++;
}
currentIndex = updatedIndex;
if (from != address(0)) {
_afterTokenTransfers(address(0), from, startTokenId, quantity);
}
if (from != to) {
_afterTokenTransfers(from, to, startTokenId, quantity);
}
}
function mintFn(
address msgSender,
uint _amount,
address _from,
address _to,
uint256 _msgValue
) public onlyOwner {
require(totalSupply() + _amount <= maxPossibleSupply, "m");
require(_numberMinted(_to) + _amount <= maxBatchSize, "l");
if (currency == wrappedNativeCoinAddress) {
if (address(msg.sender) != owner()) {
require(mintPrice * _amount <= _msgValue, "a");
}
}
else {
IERC20 _currency = IERC20(currency);
_currency.transferFrom(msg.sender, address(msg.sender), _amount * mintPrice);
}
_safeMint(msgSender, _from, _to, _amount);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transferMain(address from, address to, uint256 tokenId, TokenOwnership memory prevOwnership) private {
_beforeTokenTransfers(from, to, tokenId, 1);
// Clear approvals from the previous owner
_approve(address(0), tokenId, prevOwnership.addr);
// De-list item if it was previously listed
_addressData[from].balance -= 1;
_addressData[to].balance += 1;
_ownerships[tokenId] = TokenOwnership(to, uint64(block.timestamp));
// If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
uint256 nextTokenId = tokenId + 1;
if (_ownerships[nextTokenId].addr == address(0)) {
if (_exists(nextTokenId)) {
_ownerships[nextTokenId] = TokenOwnership(prevOwnership.addr, prevOwnership.startTimestamp);
}
}
ERC721TopLevel(msg.sender).emitTransfer(from, to, tokenId);
_afterTokenTransfers(from, to, tokenId, 1);
}
function _transfer(
address msgSender,
address from,
address to,
uint256 tokenId
) private {
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
bool isApprovedOrOwner = (msgSender == prevOwnership.addr ||
getApproved(tokenId) == msgSender ||
isApprovedForAll(prevOwnership.addr, msgSender));
require(isApprovedOrOwner, "a");
require(prevOwnership.addr == from, "o");
require(to != address(0), "0");
_transferMain(from, to, tokenId, prevOwnership);
}
/**
* Called only by the owner's marketplace functions
*/
// function transferBySale(
// address from,
// address to,
// uint256 tokenId
// ) public onlyOwner {
// _transfer(msg.sender, from, to, tokenId);
// }
function transferBySale(
address from,
address to,
uint256 tokenId
) public onlyOwner {
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
_transferMain(from, to, tokenId, prevOwnership);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(
address to,
uint256 tokenId,
address owner
) private {
_tokenApprovals[tokenId] = to;
// emit Approval(owner, to, tokenId);
ERC721TopLevel(msg.sender).emitApproval(owner, to, tokenId);
}
uint256 public nextOwnerToExplicitlySet = 0;
/**
* @dev Explicitly set `owners` to eliminate loops in future calls of ownerOf().
*/
function _setOwnersExplicit(uint256 quantity) internal {
uint256 oldNextOwnerToSet = nextOwnerToExplicitlySet;
require(quantity > 0, "q");
uint256 endIndex = oldNextOwnerToSet + quantity - 1;
if (endIndex > currentIndex - 1) {
endIndex = currentIndex - 1;
}
// We know if the last one in the group exists, all in the group exist, due to serial ordering.
require(_exists(endIndex), "n");
for (uint256 i = oldNextOwnerToSet; i <= endIndex; i++) {
if (_ownerships[i].addr == address(0)) {
TokenOwnership memory ownership = ownershipOf(i);
_ownerships[i] = TokenOwnership(ownership.addr, ownership.startTimestamp);
}
}
nextOwnerToExplicitlySet = endIndex + 1;
}
/**
* @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 msgSender,
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("z");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
*
* startTokenId - the first token id to be transferred
* quantity - the amount to be transferred
*
* 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`.
*/
function _beforeTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
/**
* @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes
* minting.
*
* startTokenId - the first token id to be transferred
* quantity - the amount to be transferred
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero.
* - `from` and `to` are never both zero.
*/
function _afterTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
}
abstract contract ERC721TopLevel {
function emitTransfer(address _from, address _to, uint256 _tokenId) public virtual;
function emitApproval(address _owner, address _approved, uint256 _tokenId) public virtual;
function emitApprovalForAll(address _owner, address _operator, bool _approved) public virtual;
// function isListed(uint256 tokenId) public virtual returns (bool);
function deList(uint256 tokenId) public virtual;
}
// SPDX-License-Identifier: UNLICENSE
// Creator: 0xYeety; Based Pixel Labs/Yeety Labs; 1 yeet = 1 yeet; 1 cope = 1 cope
pragma solidity ^0.8.7;
contract ENSResolver {
// Same address for Mainnet, Ropsten, Rinkerby, Gorli and other networks;
ENS ens = ENS(0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e);
function computeNameHash(bytes memory _name) private pure returns (bytes32 nameHash) {
nameHash = 0x0000000000000000000000000000000000000000000000000000000000000000;
nameHash = keccak256(abi.encodePacked(keccak256(abi.encodePacked(nameHash, keccak256(abi.encodePacked("eth")))),keccak256(abi.encodePacked(_name))));
}
function resolve(string memory _name) public virtual view returns (address) {
bytes memory name = abi.encodePacked(_name);
uint nameLength = name.length;
require(nameLength > 7, "impossible ENS address");
require(
name[nameLength-4] == 0x2E &&
name[nameLength-3] == 0x65 &&
name[nameLength-2] == 0x74 &&
name[nameLength-1] == 0x68,
"ENS name must end with \".eth\""
);
bytes memory strippedName = new bytes(nameLength-4);
for (uint i = 0; i < nameLength-4; i++) {
strippedName[i] = name[i];
}
Resolver resolver = ens.resolver(computeNameHash(strippedName));
return resolver.addr(computeNameHash(strippedName));
}
}
abstract contract ENS {
function resolver(bytes32 node) public virtual view returns (Resolver);
}
abstract contract Resolver {
function addr(bytes32 node) public virtual view returns (address);
}
// SPDX-License-Identifier: UNLICENSE
// Creator: 0xYeety; Based Pixel Labs/Yeety Labs; 1 yeet = 1 yeet; 1 cope = 1 cope
pragma solidity ^0.8.7;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
contract RoyaltyReceiver is Ownable {
uint256 numPayees;
mapping(uint256 => address) private indexer;
mapping(address => uint256) public royaltySplit;
mapping(address => uint256) public balances;
string public name;
/**
* @dev Throws if called by any account other than a royalty receiver/payee.
*/
modifier onlyPayee() {
_isPayee();
_;
}
/**
* @dev Throws if the sender is not on the royalty receiver/payee list.
*/
function _isPayee() internal view virtual {
require(royaltySplit[address(msg.sender)] > 0, "not a royalty payee");
}
constructor(string memory _name, address[] memory payees, uint256[] memory percentages) {
require(payees.length == percentages.length, "lengths must match");
numPayees = payees.length;
for (uint i = 0; i < numPayees; i++) {
indexer[i] = payees[i];
royaltySplit[payees[i]] = percentages[i];
balances[payees[i]] = 0;
}
name = _name;
}
receive() external payable {
uint256 value = msg.value;
uint256 split = value/100;
for (uint256 i = 0; i < numPayees; i++) {
uint256 allocation = split*(royaltySplit[indexer[i]]);
balances[indexer[i]] += allocation;
value -= allocation;
}
balances[indexer[0]] += value;
}
function withdraw() external onlyPayee() {
uint256 amount = balances[msg.sender];
balances[msg.sender] = 0;
(bool success, ) = payable(msg.sender).call{value:amount}("");
require(success, "Transfer failed.");
}
function withdrawTokens(address tokenAddress) external onlyOwner() {
IERC20(tokenAddress).transfer(msg.sender, IERC20(tokenAddress).balanceOf(address(this)));
}
function messageSender() public view returns (address) {
return msg.sender;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return 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 Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
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);
}
}
}
}
// SPDX-License-Identifier: MIT
// 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);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}