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Latest 25 from a total of 121 transactions
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| Mint And Approve | 19949267 | 538 days ago | IN | 0 ETH | 0.00073371 | ||||
| Mint And Approve | 19949259 | 538 days ago | IN | 0 ETH | 0.00070374 | ||||
| Mint And Approve | 19949253 | 538 days ago | IN | 0 ETH | 0.00074368 | ||||
| Mint And Approve | 19949246 | 538 days ago | IN | 0 ETH | 0.00074302 | ||||
| Mint And Approve | 19949240 | 538 days ago | IN | 0 ETH | 0.00074835 | ||||
| Mint And Approve | 19949233 | 538 days ago | IN | 0 ETH | 0.00072554 | ||||
| Mint And Approve | 19949222 | 538 days ago | IN | 0 ETH | 0.00077187 | ||||
| Mint And Approve | 19949217 | 538 days ago | IN | 0 ETH | 0.00064602 | ||||
| Mint And Approve | 19949209 | 538 days ago | IN | 0 ETH | 0.00071181 | ||||
| Mint And Approve | 19949203 | 538 days ago | IN | 0 ETH | 0.00075925 | ||||
| Mint And Approve | 19949196 | 538 days ago | IN | 0 ETH | 0.0007114 | ||||
| Mint And Approve | 19949188 | 538 days ago | IN | 0 ETH | 0.00072646 | ||||
| Mint And Approve | 19949179 | 538 days ago | IN | 0 ETH | 0.00083107 | ||||
| Mint And Approve | 19949165 | 538 days ago | IN | 0 ETH | 0.00080679 | ||||
| Mint And Approve | 19949156 | 538 days ago | IN | 0 ETH | 0.00076437 | ||||
| Mint And Approve | 19949149 | 538 days ago | IN | 0 ETH | 0.00082567 | ||||
| Mint And Approve | 19949129 | 538 days ago | IN | 0 ETH | 0.00066272 | ||||
| Mint And Approve | 19949122 | 538 days ago | IN | 0 ETH | 0.00082842 | ||||
| Mint And Approve | 19949115 | 538 days ago | IN | 0 ETH | 0.00082599 | ||||
| Mint And Approve | 19949107 | 538 days ago | IN | 0 ETH | 0.00075569 | ||||
| Mint And Approve | 19949101 | 538 days ago | IN | 0 ETH | 0.00075494 | ||||
| Mint And Approve | 19949095 | 538 days ago | IN | 0 ETH | 0.00075879 | ||||
| Mint And Approve | 19949081 | 538 days ago | IN | 0 ETH | 0.00072364 | ||||
| Mint And Approve | 19949074 | 538 days ago | IN | 0 ETH | 0.00083354 | ||||
| Mint And Approve | 19949067 | 538 days ago | IN | 0 ETH | 0.00076218 |
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| 0x3d602d80 | 19946388 | 538 days ago | Contract Creation | 0 ETH |
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Minimal Proxy Contract for 0xd3de35027a5c3dafae8f7a7d354eec22d4461cdd
Contract Name:
NFTCollection
Compiler Version
v0.8.25+commit.b61c2a91
Optimization Enabled:
Yes with 1337000 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
// solhint-disable max-line-length
import { IERC165 } from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import { IERC721Metadata } from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
import { INFTCollectionInitializer } from "../interfaces/internal/collections/INFTCollectionInitializer.sol";
import { AddressUpgradeable } from "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
import { ERC721BurnableUpgradeable } from "@openzeppelin/contracts-upgradeable-v5/token/ERC721/extensions/ERC721BurnableUpgradeable.sol";
import { ERC721Upgradeable } from "@openzeppelin/contracts-upgradeable-v5/token/ERC721/ERC721Upgradeable.sol";
import { Initializable } from "@openzeppelin/contracts-upgradeable-v5/proxy/utils/Initializable.sol";
import { Ownable2StepUpgradeable } from "@openzeppelin/contracts-upgradeable-v5/access/Ownable2StepUpgradeable.sol";
import "../mixins/shared/Constants.sol";
import { AddressLibrary } from "../libraries/AddressLibrary.sol";
import { CollectionRoyalties } from "../mixins/collections/CollectionRoyalties.sol";
import { NFTCollectionType } from "../mixins/collections/NFTCollectionType.sol";
import { SelfDestructibleCollection } from "../mixins/collections/SelfDestructibleCollection.sol";
import { SequentialMintCollection } from "../mixins/collections/SequentialMintCollection.sol";
import { StringsLibrary } from "../libraries/StringsLibrary.sol";
import { TokenLimitedCollection } from "../mixins/collections/TokenLimitedCollection.sol";
// solhint-enable max-line-length
error NFTCollection_Max_Token_Id_Has_Already_Been_Minted(uint256 maxTokenId);
error NFTCollection_Token_CID_Already_Minted();
error NFTCollection_Token_Creator_Payment_Address_Required();
/**
* @title A collection of 1:1 NFTs by a single creator.
* @notice A 10% royalty to the creator is included which may be split with collaborators on a per-NFT basis.
* @author batu-inal & HardlyDifficult
*/
contract NFTCollection is
INFTCollectionInitializer,
Initializable,
Ownable2StepUpgradeable,
ERC721Upgradeable,
ERC721BurnableUpgradeable,
NFTCollectionType,
SequentialMintCollection,
TokenLimitedCollection,
CollectionRoyalties,
SelfDestructibleCollection
{
using AddressLibrary for address;
using AddressUpgradeable for address;
/**
* @notice The baseURI to use for the tokenURI, if undefined then `ipfs://` is used.
*/
string private baseURI_;
/**
* @notice Stores hashes minted to prevent duplicates.
* @dev 0 means not yet minted, set to 1 when minted.
* For why using uint is better than using bool here:
* github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.7.3/contracts/security/ReentrancyGuard.sol#L23-L27
*/
mapping(string => uint256) private cidToMinted;
/**
* @dev Stores an optional alternate address to receive creator revenue and royalty payments.
* The target address may be a contract which could split or escrow payments.
*/
mapping(uint256 => address payable) private tokenIdToCreatorPaymentAddress;
/**
* @dev Stores a CID for each NFT.
*/
mapping(uint256 => string) private _tokenCIDs;
/**
* @notice Emitted when the owner changes the base URI to be used for NFTs in this collection.
* @param baseURI The new base URI to use.
*/
event BaseURIUpdated(string baseURI);
/**
* @notice Emitted when a new NFT is minted.
* @param creator The address of the collection owner at this time this NFT was minted.
* @param tokenId The tokenId of the newly minted NFT.
* @param indexedTokenCID The CID of the newly minted NFT, indexed to enable watching for mint events by the tokenCID.
* @param tokenCID The actual CID of the newly minted NFT.
*/
event Minted(address indexed creator, uint256 indexed tokenId, string indexed indexedTokenCID, string tokenCID);
/**
* @notice Emitted when the payment address for creator royalties is set.
* @param fromPaymentAddress The original address used for royalty payments.
* @param toPaymentAddress The new address used for royalty payments.
* @param tokenId The NFT which had the royalty payment address updated.
*/
event TokenCreatorPaymentAddressSet(
address indexed fromPaymentAddress,
address indexed toPaymentAddress,
uint256 indexed tokenId
);
/// @notice Initialize the template's immutable variables.
constructor() NFTCollectionType(NFT_COLLECTION_TYPE) reinitializer(type(uint64).max) {
__ERC721_init_unchained("NFT Collection Implementation", "NFT");
// Using reinitializer instead of _disableInitializers allows initializing of OZ mixins, describing the template.
}
/**
* @notice Called by the contract factory on creation.
* @param _creator The creator of this collection.
* @param _name The collection's `name`.
* @param _symbol The collection's `symbol`.
*/
function initialize(address payable _creator, string calldata _name, string calldata _symbol) external initializer {
__ERC721_init_unchained(_name, _symbol);
__Ownable_init_unchained(_creator);
// maxTokenId defaults to 0 but may be assigned later on.
}
/**
* @notice Mint an NFT defined by its metadata path.
* @dev This is only callable by the collection creator/owner.
* @param tokenCID The CID for the metadata json of the NFT to mint.
* @return tokenId The tokenId of the newly minted NFT.
*/
function mint(string calldata tokenCID) external returns (uint256 tokenId) {
tokenId = _mint(tokenCID);
}
/**
* @notice Mint an NFT defined by its metadata path and approves the provided operator address.
* @dev This is only callable by the collection creator/owner.
* It can be used the first time they mint to save having to issue a separate approval
* transaction before listing the NFT for sale.
* @param tokenCID The CID for the metadata json of the NFT to mint.
* @param operator The address to set as an approved operator for the creator's account.
* @return tokenId The tokenId of the newly minted NFT.
*/
function mintAndApprove(string calldata tokenCID, address operator) external returns (uint256 tokenId) {
tokenId = _mint(tokenCID);
setApprovalForAll(operator, true);
}
/**
* @notice Mint an NFT defined by its metadata path and have creator revenue/royalties sent to an alternate address.
* @dev This is only callable by the collection creator/owner.
* @param tokenCID The CID for the metadata json of the NFT to mint.
* @param tokenCreatorPaymentAddress The royalty recipient address to use for this NFT.
* @return tokenId The tokenId of the newly minted NFT.
*/
function mintWithCreatorPaymentAddress(
string calldata tokenCID,
address payable tokenCreatorPaymentAddress
) public returns (uint256 tokenId) {
if (tokenCreatorPaymentAddress == address(0)) {
revert NFTCollection_Token_Creator_Payment_Address_Required();
}
tokenId = _mint(tokenCID);
tokenIdToCreatorPaymentAddress[tokenId] = tokenCreatorPaymentAddress;
emit TokenCreatorPaymentAddressSet(address(0), tokenCreatorPaymentAddress, tokenId);
}
/**
* @notice Mint an NFT defined by its metadata path and approves the provided operator address.
* @dev This is only callable by the collection creator/owner.
* It can be used the first time they mint to save having to issue a separate approval
* transaction before listing the NFT for sale.
* @param tokenCID The CID for the metadata json of the NFT to mint.
* @param tokenCreatorPaymentAddress The royalty recipient address to use for this NFT.
* @param operator The address to set as an approved operator for the creator's account.
* @return tokenId The tokenId of the newly minted NFT.
*/
function mintWithCreatorPaymentAddressAndApprove(
string calldata tokenCID,
address payable tokenCreatorPaymentAddress,
address operator
) external returns (uint256 tokenId) {
tokenId = mintWithCreatorPaymentAddress(tokenCID, tokenCreatorPaymentAddress);
setApprovalForAll(operator, true);
}
/**
* @notice Mint an NFT defined by its metadata path and have creator revenue/royalties sent to an alternate address
* which is defined by a contract call, typically a proxy contract address representing the payment terms.
* @dev This is only callable by the collection creator/owner.
* @param tokenCID The CID for the metadata json of the NFT to mint.
* @param paymentAddressFactory The contract to call which will return the address to use for payments.
* @param paymentAddressCall The call details to send to the factory provided.
* @return tokenId The tokenId of the newly minted NFT.
*/
function mintWithCreatorPaymentFactory(
string calldata tokenCID,
address paymentAddressFactory,
bytes calldata paymentAddressCall
) public returns (uint256 tokenId) {
address payable tokenCreatorPaymentAddress = paymentAddressFactory.callAndReturnContractAddress(paymentAddressCall);
tokenId = mintWithCreatorPaymentAddress(tokenCID, tokenCreatorPaymentAddress);
}
/**
* @notice Mint an NFT defined by its metadata path and have creator revenue/royalties sent to an alternate address
* which is defined by a contract call, typically a proxy contract address representing the payment terms.
* @dev This is only callable by the collection creator/owner.
* It can be used the first time they mint to save having to issue a separate approval
* transaction before listing the NFT for sale.
* @param tokenCID The CID for the metadata json of the NFT to mint.
* @param paymentAddressFactory The contract to call which will return the address to use for payments.
* @param paymentAddressCall The call details to send to the factory provided.
* @param operator The address to set as an approved operator for the creator's account.
* @return tokenId The tokenId of the newly minted NFT.
*/
function mintWithCreatorPaymentFactoryAndApprove(
string calldata tokenCID,
address paymentAddressFactory,
bytes calldata paymentAddressCall,
address operator
) external returns (uint256 tokenId) {
tokenId = mintWithCreatorPaymentFactory(tokenCID, paymentAddressFactory, paymentAddressCall);
setApprovalForAll(operator, true);
}
/**
* @notice Allows the collection creator to destroy this contract only if no NFTs have been minted yet or the minted
* NFTs have been burned.
*/
function selfDestruct() external onlyOwner {
_selfDestruct();
}
/**
* @notice Allows the owner to assign a baseURI to use for the tokenURI instead of the default `ipfs://`.
* @param baseURIOverride The new base URI to use for all NFTs in this collection.
*/
function updateBaseURI(string calldata baseURIOverride) external onlyOwner {
baseURI_ = baseURIOverride;
emit BaseURIUpdated(baseURIOverride);
}
/**
* @notice Allows the owner to set a max tokenID.
* This provides a guarantee to collectors about the limit of this collection contract, if applicable.
* @dev Once this value has been set, it may be decreased but can never be increased.
* This max may be more than the final `totalSupply` if 1 or more tokens were burned.
* @param _maxTokenId The max tokenId to set, all NFTs must have a tokenId less than or equal to this value.
*/
function updateMaxTokenId(uint32 _maxTokenId) external onlyOwner {
_updateMaxTokenId(_maxTokenId);
}
/// @inheritdoc ERC721Upgradeable
function _update(
address to,
uint256 tokenId,
address auth
) internal override(ERC721Upgradeable, SequentialMintCollection) returns (address from) {
if (to == address(0)) {
// On burn clean up
delete cidToMinted[_tokenCIDs[tokenId]];
delete tokenIdToCreatorPaymentAddress[tokenId];
delete _tokenCIDs[tokenId];
}
from = super._update(to, tokenId, auth);
}
function _mint(string calldata tokenCID) private onlyOwner returns (uint256 tokenId) {
StringsLibrary.validateStringNotEmpty(tokenCID);
if (cidToMinted[tokenCID] != 0) {
revert NFTCollection_Token_CID_Already_Minted();
}
// If the mint will exceed uint32, the addition here will overflow. But it's not realistic to mint that many tokens.
tokenId = ++latestTokenId;
if (maxTokenId != 0 && tokenId > maxTokenId) {
revert NFTCollection_Max_Token_Id_Has_Already_Been_Minted(maxTokenId);
}
cidToMinted[tokenCID] = 1;
_tokenCIDs[tokenId] = tokenCID;
_safeMint(msg.sender, tokenId);
emit Minted(msg.sender, tokenId, tokenCID, tokenCID);
}
/**
* @notice The base URI used for all NFTs in this collection.
* @dev The `tokenCID` is appended to this to obtain an NFT's `tokenURI`.
* e.g. The URI for a token with the `tokenCID`: "foo" and `baseURI`: "ipfs://" is "ipfs://foo".
* @return uri The base URI used by this collection.
*/
function baseURI() external view returns (string memory uri) {
uri = _baseURI();
}
/**
* @notice Checks if the creator has already minted a given NFT using this collection contract.
* @param tokenCID The CID to check for.
* @return hasBeenMinted True if the creator has already minted an NFT with this CID.
*/
function getHasMintedCID(string calldata tokenCID) external view returns (bool hasBeenMinted) {
hasBeenMinted = cidToMinted[tokenCID] != 0;
}
/**
* @inheritdoc CollectionRoyalties
*/
function getTokenCreatorPaymentAddress(
uint256 tokenId
) public view override returns (address payable creatorPaymentAddress) {
creatorPaymentAddress = tokenIdToCreatorPaymentAddress[tokenId];
if (creatorPaymentAddress == address(0)) {
creatorPaymentAddress = payable(owner());
}
}
/// @inheritdoc IERC165
function supportsInterface(
bytes4 interfaceId
) public view override(ERC721Upgradeable, CollectionRoyalties) returns (bool interfaceSupported) {
interfaceSupported = super.supportsInterface(interfaceId);
}
/// @inheritdoc IERC721Metadata
function tokenURI(uint256 tokenId) public view override returns (string memory uri) {
_requireOwned(tokenId);
uri = string.concat(_baseURI(), _tokenCIDs[tokenId]);
}
function _baseURI() internal view override returns (string memory uri) {
uri = baseURI_;
if (bytes(uri).length == 0) {
uri = "ipfs://";
}
}
function totalSupply()
public
view
override(SelfDestructibleCollection, SequentialMintCollection)
returns (uint256 supply)
{
supply = super.totalSupply();
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable2Step.sol)
pragma solidity ^0.8.20;
import {OwnableUpgradeable} from "./OwnableUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which provides access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* The initial owner is specified at deployment time in the constructor for `Ownable`. This
* can later be changed with {transferOwnership} and {acceptOwnership}.
*
* This module is used through inheritance. It will make available all functions
* from parent (Ownable).
*/
abstract contract Ownable2StepUpgradeable is Initializable, OwnableUpgradeable {
/// @custom:storage-location erc7201:openzeppelin.storage.Ownable2Step
struct Ownable2StepStorage {
address _pendingOwner;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable2Step")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant Ownable2StepStorageLocation = 0x237e158222e3e6968b72b9db0d8043aacf074ad9f650f0d1606b4d82ee432c00;
function _getOwnable2StepStorage() private pure returns (Ownable2StepStorage storage $) {
assembly {
$.slot := Ownable2StepStorageLocation
}
}
event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner);
function __Ownable2Step_init() internal onlyInitializing {
}
function __Ownable2Step_init_unchained() internal onlyInitializing {
}
/**
* @dev Returns the address of the pending owner.
*/
function pendingOwner() public view virtual returns (address) {
Ownable2StepStorage storage $ = _getOwnable2StepStorage();
return $._pendingOwner;
}
/**
* @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual override onlyOwner {
Ownable2StepStorage storage $ = _getOwnable2StepStorage();
$._pendingOwner = newOwner;
emit OwnershipTransferStarted(owner(), newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual override {
Ownable2StepStorage storage $ = _getOwnable2StepStorage();
delete $._pendingOwner;
super._transferOwnership(newOwner);
}
/**
* @dev The new owner accepts the ownership transfer.
*/
function acceptOwnership() public virtual {
address sender = _msgSender();
if (pendingOwner() != sender) {
revert OwnableUnauthorizedAccount(sender);
}
_transferOwnership(sender);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)
pragma solidity ^0.8.20;
import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* The initial owner is set to the address provided by the deployer. This can
* later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
/// @custom:storage-location erc7201:openzeppelin.storage.Ownable
struct OwnableStorage {
address _owner;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant OwnableStorageLocation = 0x9016d09d72d40fdae2fd8ceac6b6234c7706214fd39c1cd1e609a0528c199300;
function _getOwnableStorage() private pure returns (OwnableStorage storage $) {
assembly {
$.slot := OwnableStorageLocation
}
}
/**
* @dev The caller account is not authorized to perform an operation.
*/
error OwnableUnauthorizedAccount(address account);
/**
* @dev The owner is not a valid owner account. (eg. `address(0)`)
*/
error OwnableInvalidOwner(address owner);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the address provided by the deployer as the initial owner.
*/
function __Ownable_init(address initialOwner) internal onlyInitializing {
__Ownable_init_unchained(initialOwner);
}
function __Ownable_init_unchained(address initialOwner) internal onlyInitializing {
if (initialOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(initialOwner);
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
OwnableStorage storage $ = _getOwnableStorage();
return $._owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
if (owner() != _msgSender()) {
revert OwnableUnauthorizedAccount(_msgSender());
}
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby disabling 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 {
if (newOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
OwnableStorage storage $ = _getOwnableStorage();
address oldOwner = $._owner;
$._owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.20;
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```solidity
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
*
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
* ====
* Avoid leaving a contract uninitialized.
*
* An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
* contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
* the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() {
* _disableInitializers();
* }
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Storage of the initializable contract.
*
* It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions
* when using with upgradeable contracts.
*
* @custom:storage-location erc7201:openzeppelin.storage.Initializable
*/
struct InitializableStorage {
/**
* @dev Indicates that the contract has been initialized.
*/
uint64 _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool _initializing;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00;
/**
* @dev The contract is already initialized.
*/
error InvalidInitialization();
/**
* @dev The contract is not initializing.
*/
error NotInitializing();
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint64 version);
/**
* @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
* `onlyInitializing` functions can be used to initialize parent contracts.
*
* Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any
* number of times. This behavior in the constructor can be useful during testing and is not expected to be used in
* production.
*
* Emits an {Initialized} event.
*/
modifier initializer() {
// solhint-disable-next-line var-name-mixedcase
InitializableStorage storage $ = _getInitializableStorage();
// Cache values to avoid duplicated sloads
bool isTopLevelCall = !$._initializing;
uint64 initialized = $._initialized;
// Allowed calls:
// - initialSetup: the contract is not in the initializing state and no previous version was
// initialized
// - construction: the contract is initialized at version 1 (no reininitialization) and the
// current contract is just being deployed
bool initialSetup = initialized == 0 && isTopLevelCall;
bool construction = initialized == 1 && address(this).code.length == 0;
if (!initialSetup && !construction) {
revert InvalidInitialization();
}
$._initialized = 1;
if (isTopLevelCall) {
$._initializing = true;
}
_;
if (isTopLevelCall) {
$._initializing = false;
emit Initialized(1);
}
}
/**
* @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
* contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
* used to initialize parent contracts.
*
* A reinitializer may be used after the original initialization step. This is essential to configure modules that
* are added through upgrades and that require initialization.
*
* When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
* cannot be nested. If one is invoked in the context of another, execution will revert.
*
* Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
* a contract, executing them in the right order is up to the developer or operator.
*
* WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization.
*
* Emits an {Initialized} event.
*/
modifier reinitializer(uint64 version) {
// solhint-disable-next-line var-name-mixedcase
InitializableStorage storage $ = _getInitializableStorage();
if ($._initializing || $._initialized >= version) {
revert InvalidInitialization();
}
$._initialized = version;
$._initializing = true;
_;
$._initializing = false;
emit Initialized(version);
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} and {reinitializer} modifiers, directly or indirectly.
*/
modifier onlyInitializing() {
_checkInitializing();
_;
}
/**
* @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}.
*/
function _checkInitializing() internal view virtual {
if (!_isInitializing()) {
revert NotInitializing();
}
}
/**
* @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
* Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
* to any version. It is recommended to use this to lock implementation contracts that are designed to be called
* through proxies.
*
* Emits an {Initialized} event the first time it is successfully executed.
*/
function _disableInitializers() internal virtual {
// solhint-disable-next-line var-name-mixedcase
InitializableStorage storage $ = _getInitializableStorage();
if ($._initializing) {
revert InvalidInitialization();
}
if ($._initialized != type(uint64).max) {
$._initialized = type(uint64).max;
emit Initialized(type(uint64).max);
}
}
/**
* @dev Returns the highest version that has been initialized. See {reinitializer}.
*/
function _getInitializedVersion() internal view returns (uint64) {
return _getInitializableStorage()._initialized;
}
/**
* @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
*/
function _isInitializing() internal view returns (bool) {
return _getInitializableStorage()._initializing;
}
/**
* @dev Returns a pointer to the storage namespace.
*/
// solhint-disable-next-line var-name-mixedcase
function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
assembly {
$.slot := INITIALIZABLE_STORAGE
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.20;
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC721Receiver} from "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import {IERC721Metadata} from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
import {ContextUpgradeable} from "../../utils/ContextUpgradeable.sol";
import {Strings} from "@openzeppelin/contracts/utils/Strings.sol";
import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import {ERC165Upgradeable} from "../../utils/introspection/ERC165Upgradeable.sol";
import {IERC721Errors} from "@openzeppelin/contracts/interfaces/draft-IERC6093.sol";
import {Initializable} from "../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
abstract contract ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721, IERC721Metadata, IERC721Errors {
using Strings for uint256;
/// @custom:storage-location erc7201:openzeppelin.storage.ERC721
struct ERC721Storage {
// Token name
string _name;
// Token symbol
string _symbol;
mapping(uint256 tokenId => address) _owners;
mapping(address owner => uint256) _balances;
mapping(uint256 tokenId => address) _tokenApprovals;
mapping(address owner => mapping(address operator => bool)) _operatorApprovals;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ERC721")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant ERC721StorageLocation = 0x80bb2b638cc20bc4d0a60d66940f3ab4a00c1d7b313497ca82fb0b4ab0079300;
function _getERC721Storage() private pure returns (ERC721Storage storage $) {
assembly {
$.slot := ERC721StorageLocation
}
}
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
function __ERC721_init(string memory name_, string memory symbol_) internal onlyInitializing {
__ERC721_init_unchained(name_, symbol_);
}
function __ERC721_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
ERC721Storage storage $ = _getERC721Storage();
$._name = name_;
$._symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual returns (uint256) {
ERC721Storage storage $ = _getERC721Storage();
if (owner == address(0)) {
revert ERC721InvalidOwner(address(0));
}
return $._balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual returns (address) {
return _requireOwned(tokenId);
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual returns (string memory) {
ERC721Storage storage $ = _getERC721Storage();
return $._name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual returns (string memory) {
ERC721Storage storage $ = _getERC721Storage();
return $._symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual returns (string memory) {
_requireOwned(tokenId);
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string.concat(baseURI, tokenId.toString()) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overridden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual {
_approve(to, tokenId, _msgSender());
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual returns (address) {
_requireOwned(tokenId);
return _getApproved(tokenId);
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual returns (bool) {
ERC721Storage storage $ = _getERC721Storage();
return $._operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(address from, address to, uint256 tokenId) public virtual {
if (to == address(0)) {
revert ERC721InvalidReceiver(address(0));
}
// Setting an "auth" arguments enables the `_isAuthorized` check which verifies that the token exists
// (from != 0). Therefore, it is not needed to verify that the return value is not 0 here.
address previousOwner = _update(to, tokenId, _msgSender());
if (previousOwner != from) {
revert ERC721IncorrectOwner(from, tokenId, previousOwner);
}
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) public {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual {
transferFrom(from, to, tokenId);
_checkOnERC721Received(from, to, tokenId, data);
}
/**
* @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
*
* IMPORTANT: Any overrides to this function that add ownership of tokens not tracked by the
* core ERC721 logic MUST be matched with the use of {_increaseBalance} to keep balances
* consistent with ownership. The invariant to preserve is that for any address `a` the value returned by
* `balanceOf(a)` must be equal to the number of tokens such that `_ownerOf(tokenId)` is `a`.
*/
function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
ERC721Storage storage $ = _getERC721Storage();
return $._owners[tokenId];
}
/**
* @dev Returns the approved address for `tokenId`. Returns 0 if `tokenId` is not minted.
*/
function _getApproved(uint256 tokenId) internal view virtual returns (address) {
ERC721Storage storage $ = _getERC721Storage();
return $._tokenApprovals[tokenId];
}
/**
* @dev Returns whether `spender` is allowed to manage `owner`'s tokens, or `tokenId` in
* particular (ignoring whether it is owned by `owner`).
*
* WARNING: This function assumes that `owner` is the actual owner of `tokenId` and does not verify this
* assumption.
*/
function _isAuthorized(address owner, address spender, uint256 tokenId) internal view virtual returns (bool) {
return
spender != address(0) &&
(owner == spender || isApprovedForAll(owner, spender) || _getApproved(tokenId) == spender);
}
/**
* @dev Checks if `spender` can operate on `tokenId`, assuming the provided `owner` is the actual owner.
* Reverts if `spender` does not have approval from the provided `owner` for the given token or for all its assets
* the `spender` for the specific `tokenId`.
*
* WARNING: This function assumes that `owner` is the actual owner of `tokenId` and does not verify this
* assumption.
*/
function _checkAuthorized(address owner, address spender, uint256 tokenId) internal view virtual {
if (!_isAuthorized(owner, spender, tokenId)) {
if (owner == address(0)) {
revert ERC721NonexistentToken(tokenId);
} else {
revert ERC721InsufficientApproval(spender, tokenId);
}
}
}
/**
* @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
*
* NOTE: the value is limited to type(uint128).max. This protect against _balance overflow. It is unrealistic that
* a uint256 would ever overflow from increments when these increments are bounded to uint128 values.
*
* WARNING: Increasing an account's balance using this function tends to be paired with an override of the
* {_ownerOf} function to resolve the ownership of the corresponding tokens so that balances and ownership
* remain consistent with one another.
*/
function _increaseBalance(address account, uint128 value) internal virtual {
ERC721Storage storage $ = _getERC721Storage();
unchecked {
$._balances[account] += value;
}
}
/**
* @dev Transfers `tokenId` from its current owner to `to`, or alternatively mints (or burns) if the current owner
* (or `to`) is the zero address. Returns the owner of the `tokenId` before the update.
*
* The `auth` argument is optional. If the value passed is non 0, then this function will check that
* `auth` is either the owner of the token, or approved to operate on the token (by the owner).
*
* Emits a {Transfer} event.
*
* NOTE: If overriding this function in a way that tracks balances, see also {_increaseBalance}.
*/
function _update(address to, uint256 tokenId, address auth) internal virtual returns (address) {
ERC721Storage storage $ = _getERC721Storage();
address from = _ownerOf(tokenId);
// Perform (optional) operator check
if (auth != address(0)) {
_checkAuthorized(from, auth, tokenId);
}
// Execute the update
if (from != address(0)) {
// Clear approval. No need to re-authorize or emit the Approval event
_approve(address(0), tokenId, address(0), false);
unchecked {
$._balances[from] -= 1;
}
}
if (to != address(0)) {
unchecked {
$._balances[to] += 1;
}
}
$._owners[tokenId] = to;
emit Transfer(from, to, tokenId);
return from;
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal {
if (to == address(0)) {
revert ERC721InvalidReceiver(address(0));
}
address previousOwner = _update(to, tokenId, address(0));
if (previousOwner != address(0)) {
revert ERC721InvalidSender(address(0));
}
}
/**
* @dev Mints `tokenId`, transfers it to `to` and checks for `to` acceptance.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {
_mint(to, tokenId);
_checkOnERC721Received(address(0), to, tokenId, data);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
* This is an internal function that does not check if the sender is authorized to operate on the token.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal {
address previousOwner = _update(address(0), tokenId, address(0));
if (previousOwner == address(0)) {
revert ERC721NonexistentToken(tokenId);
}
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(address from, address to, uint256 tokenId) internal {
if (to == address(0)) {
revert ERC721InvalidReceiver(address(0));
}
address previousOwner = _update(to, tokenId, address(0));
if (previousOwner == address(0)) {
revert ERC721NonexistentToken(tokenId);
} else if (previousOwner != from) {
revert ERC721IncorrectOwner(from, tokenId, previousOwner);
}
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking that contract recipients
* are aware of the ERC721 standard to prevent tokens from being forever locked.
*
* `data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is like {safeTransferFrom} in the sense that it invokes
* {IERC721Receiver-onERC721Received} on the receiver, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `tokenId` token must exist and be owned by `from`.
* - `to` cannot be the zero address.
* - `from` cannot be the zero address.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(address from, address to, uint256 tokenId) internal {
_safeTransfer(from, to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeTransfer-address-address-uint256-}[`_safeTransfer`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
_transfer(from, to, tokenId);
_checkOnERC721Received(from, to, tokenId, data);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* The `auth` argument is optional. If the value passed is non 0, then this function will check that `auth` is
* either the owner of the token, or approved to operate on all tokens held by this owner.
*
* Emits an {Approval} event.
*
* Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
*/
function _approve(address to, uint256 tokenId, address auth) internal {
_approve(to, tokenId, auth, true);
}
/**
* @dev Variant of `_approve` with an optional flag to enable or disable the {Approval} event. The event is not
* emitted in the context of transfers.
*/
function _approve(address to, uint256 tokenId, address auth, bool emitEvent) internal virtual {
ERC721Storage storage $ = _getERC721Storage();
// Avoid reading the owner unless necessary
if (emitEvent || auth != address(0)) {
address owner = _requireOwned(tokenId);
// We do not use _isAuthorized because single-token approvals should not be able to call approve
if (auth != address(0) && owner != auth && !isApprovedForAll(owner, auth)) {
revert ERC721InvalidApprover(auth);
}
if (emitEvent) {
emit Approval(owner, to, tokenId);
}
}
$._tokenApprovals[tokenId] = to;
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Requirements:
* - operator can't be the address zero.
*
* Emits an {ApprovalForAll} event.
*/
function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
ERC721Storage storage $ = _getERC721Storage();
if (operator == address(0)) {
revert ERC721InvalidOperator(operator);
}
$._operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Reverts if the `tokenId` doesn't have a current owner (it hasn't been minted, or it has been burned).
* Returns the owner.
*
* Overrides to ownership logic should be done to {_ownerOf}.
*/
function _requireOwned(uint256 tokenId) internal view returns (address) {
address owner = _ownerOf(tokenId);
if (owner == address(0)) {
revert ERC721NonexistentToken(tokenId);
}
return owner;
}
/**
* @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target address. This will revert if the
* recipient doesn't accept the token transfer. 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
*/
function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory data) private {
if (to.code.length > 0) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
if (retval != IERC721Receiver.onERC721Received.selector) {
revert ERC721InvalidReceiver(to);
}
} catch (bytes memory reason) {
if (reason.length == 0) {
revert ERC721InvalidReceiver(to);
} else {
/// @solidity memory-safe-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/ERC721Burnable.sol)
pragma solidity ^0.8.20;
import {ERC721Upgradeable} from "../ERC721Upgradeable.sol";
import {ContextUpgradeable} from "../../../utils/ContextUpgradeable.sol";
import {Initializable} from "../../../proxy/utils/Initializable.sol";
/**
* @title ERC721 Burnable Token
* @dev ERC721 Token that can be burned (destroyed).
*/
abstract contract ERC721BurnableUpgradeable is Initializable, ContextUpgradeable, ERC721Upgradeable {
function __ERC721Burnable_init() internal onlyInitializing {
}
function __ERC721Burnable_init_unchained() internal onlyInitializing {
}
/**
* @dev Burns `tokenId`. See {ERC721-_burn}.
*
* Requirements:
*
* - The caller must own `tokenId` or be an approved operator.
*/
function burn(uint256 tokenId) public virtual {
// Setting an "auth" arguments enables the `_isAuthorized` check which verifies that the token exists
// (from != 0). Therefore, it is not needed to verify that the return value is not 0 here.
_update(address(0), tokenId, _msgSender());
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)
pragma solidity ^0.8.20;
import {Initializable} from "../proxy/utils/Initializable.sol";
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract ContextUpgradeable is Initializable {
function __Context_init() internal onlyInitializing {
}
function __Context_init_unchained() internal onlyInitializing {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
function _contextSuffixLength() internal view virtual returns (uint256) {
return 0;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/ERC165.sol)
pragma solidity ^0.8.20;
import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import {Initializable} from "../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*/
abstract contract ERC165Upgradeable is Initializable, IERC165 {
function __ERC165_init() internal onlyInitializing {
}
function __ERC165_init_unchained() internal onlyInitializing {
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, 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) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, 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) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or 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 {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// 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
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;
/**
* @dev Standard ERC20 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.
*/
interface IERC20Errors {
/**
* @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param balance Current balance for the interacting account.
* @param needed Minimum amount required to perform a transfer.
*/
error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC20InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC20InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
* @param spender Address that may be allowed to operate on tokens without being their owner.
* @param allowance Amount of tokens a `spender` is allowed to operate with.
* @param needed Minimum amount required to perform a transfer.
*/
error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC20InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `spender` to be approved. Used in approvals.
* @param spender Address that may be allowed to operate on tokens without being their owner.
*/
error ERC20InvalidSpender(address spender);
}
/**
* @dev Standard ERC721 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.
*/
interface IERC721Errors {
/**
* @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.
* Used in balance queries.
* @param owner Address of the current owner of a token.
*/
error ERC721InvalidOwner(address owner);
/**
* @dev Indicates a `tokenId` whose `owner` is the zero address.
* @param tokenId Identifier number of a token.
*/
error ERC721NonexistentToken(uint256 tokenId);
/**
* @dev Indicates an error related to the ownership over a particular token. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param tokenId Identifier number of a token.
* @param owner Address of the current owner of a token.
*/
error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC721InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC721InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `operator`’s approval. Used in transfers.
* @param operator Address that may be allowed to operate on tokens without being their owner.
* @param tokenId Identifier number of a token.
*/
error ERC721InsufficientApproval(address operator, uint256 tokenId);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC721InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `operator` to be approved. Used in approvals.
* @param operator Address that may be allowed to operate on tokens without being their owner.
*/
error ERC721InvalidOperator(address operator);
}
/**
* @dev Standard ERC1155 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens.
*/
interface IERC1155Errors {
/**
* @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param balance Current balance for the interacting account.
* @param needed Minimum amount required to perform a transfer.
* @param tokenId Identifier number of a token.
*/
error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC1155InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC1155InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `operator`’s approval. Used in transfers.
* @param operator Address that may be allowed to operate on tokens without being their owner.
* @param owner Address of the current owner of a token.
*/
error ERC1155MissingApprovalForAll(address operator, address owner);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC1155InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `operator` to be approved. Used in approvals.
* @param operator Address that may be allowed to operate on tokens without being their owner.
*/
error ERC1155InvalidOperator(address operator);
/**
* @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
* Used in batch transfers.
* @param idsLength Length of the array of token identifiers
* @param valuesLength Length of the array of token amounts
*/
error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.20;
import {IERC721} from "../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 v5.0.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.20;
import {IERC165} from "../../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 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: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
* or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
* understand this adds an external call which potentially creates a reentrancy vulnerability.
*
* 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 address zero.
*
* 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 (last updated v5.0.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.20;
/**
* @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 v5.0.0) (utils/introspection/IERC165.sol)
pragma solidity ^0.8.20;
/**
* @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 v5.0.0) (utils/math/Math.sol)
pragma solidity ^0.8.20;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
/**
* @dev Muldiv operation overflow.
*/
error MathOverflowedMulDiv();
enum Rounding {
Floor, // Toward negative infinity
Ceil, // Toward positive infinity
Trunc, // Toward zero
Expand // Away from zero
}
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the subtraction of two unsigned integers, with an overflow flag.
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds towards infinity instead
* of rounding towards zero.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
if (b == 0) {
// Guarantee the same behavior as in a regular Solidity division.
return a / b;
}
// (a + b - 1) / b can overflow on addition, so we distribute.
return a == 0 ? 0 : (a - 1) / b + 1;
}
/**
* @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
* denominator == 0.
* @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
* Uniswap Labs also under MIT license.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0 = x * y; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
// Solidity will revert if denominator == 0, unlike the div opcode on its own.
// The surrounding unchecked block does not change this fact.
// See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
return prod0 / denominator;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
if (denominator <= prod1) {
revert MathOverflowedMulDiv();
}
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator.
// Always >= 1. See https://cs.stackexchange.com/q/138556/92363.
uint256 twos = denominator & (0 - denominator);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * twos;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
// works in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
/**
* @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
uint256 result = mulDiv(x, y, denominator);
if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) {
result += 1;
}
return result;
}
/**
* @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
* towards zero.
*
* Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
*/
function sqrt(uint256 a) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
// For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
//
// We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
// `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
//
// This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
// → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
// → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
//
// Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
uint256 result = 1 << (log2(a) >> 1);
// At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
// since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
// every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
// into the expected uint128 result.
unchecked {
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
return min(result, a / result);
}
}
/**
* @notice Calculates sqrt(a), following the selected rounding direction.
*/
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = sqrt(a);
return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0);
}
}
/**
* @dev Return the log in base 2 of a positive value rounded towards zero.
* Returns 0 if given 0.
*/
function log2(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 128;
}
if (value >> 64 > 0) {
value >>= 64;
result += 64;
}
if (value >> 32 > 0) {
value >>= 32;
result += 32;
}
if (value >> 16 > 0) {
value >>= 16;
result += 16;
}
if (value >> 8 > 0) {
value >>= 8;
result += 8;
}
if (value >> 4 > 0) {
value >>= 4;
result += 4;
}
if (value >> 2 > 0) {
value >>= 2;
result += 2;
}
if (value >> 1 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 2, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log2(value);
return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 10 of a positive value rounded towards zero.
* Returns 0 if given 0.
*/
function log10(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >= 10 ** 64) {
value /= 10 ** 64;
result += 64;
}
if (value >= 10 ** 32) {
value /= 10 ** 32;
result += 32;
}
if (value >= 10 ** 16) {
value /= 10 ** 16;
result += 16;
}
if (value >= 10 ** 8) {
value /= 10 ** 8;
result += 8;
}
if (value >= 10 ** 4) {
value /= 10 ** 4;
result += 4;
}
if (value >= 10 ** 2) {
value /= 10 ** 2;
result += 2;
}
if (value >= 10 ** 1) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log10(value);
return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 256 of a positive value rounded towards zero.
* Returns 0 if given 0.
*
* Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
*/
function log256(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 16;
}
if (value >> 64 > 0) {
value >>= 64;
result += 8;
}
if (value >> 32 > 0) {
value >>= 32;
result += 4;
}
if (value >> 16 > 0) {
value >>= 16;
result += 2;
}
if (value >> 8 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 256, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log256(value);
return result + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0);
}
}
/**
* @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
*/
function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
return uint8(rounding) % 2 == 1;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SignedMath.sol)
pragma solidity ^0.8.20;
/**
* @dev Standard signed math utilities missing in the Solidity language.
*/
library SignedMath {
/**
* @dev Returns the largest of two signed numbers.
*/
function max(int256 a, int256 b) internal pure returns (int256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two signed numbers.
*/
function min(int256 a, int256 b) internal pure returns (int256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two signed numbers without overflow.
* The result is rounded towards zero.
*/
function average(int256 a, int256 b) internal pure returns (int256) {
// Formula from the book "Hacker's Delight"
int256 x = (a & b) + ((a ^ b) >> 1);
return x + (int256(uint256(x) >> 255) & (a ^ b));
}
/**
* @dev Returns the absolute unsigned value of a signed value.
*/
function abs(int256 n) internal pure returns (uint256) {
unchecked {
// must be unchecked in order to support `n = type(int256).min`
return uint256(n >= 0 ? n : -n);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/ShortStrings.sol)
pragma solidity ^0.8.20;
import {StorageSlot} from "./StorageSlot.sol";
// | string | 0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
// | length | 0x BB |
type ShortString is bytes32;
/**
* @dev This library provides functions to convert short memory strings
* into a `ShortString` type that can be used as an immutable variable.
*
* Strings of arbitrary length can be optimized using this library if
* they are short enough (up to 31 bytes) by packing them with their
* length (1 byte) in a single EVM word (32 bytes). Additionally, a
* fallback mechanism can be used for every other case.
*
* Usage example:
*
* ```solidity
* contract Named {
* using ShortStrings for *;
*
* ShortString private immutable _name;
* string private _nameFallback;
*
* constructor(string memory contractName) {
* _name = contractName.toShortStringWithFallback(_nameFallback);
* }
*
* function name() external view returns (string memory) {
* return _name.toStringWithFallback(_nameFallback);
* }
* }
* ```
*/
library ShortStrings {
// Used as an identifier for strings longer than 31 bytes.
bytes32 private constant FALLBACK_SENTINEL = 0x00000000000000000000000000000000000000000000000000000000000000FF;
error StringTooLong(string str);
error InvalidShortString();
/**
* @dev Encode a string of at most 31 chars into a `ShortString`.
*
* This will trigger a `StringTooLong` error is the input string is too long.
*/
function toShortString(string memory str) internal pure returns (ShortString) {
bytes memory bstr = bytes(str);
if (bstr.length > 31) {
revert StringTooLong(str);
}
return ShortString.wrap(bytes32(uint256(bytes32(bstr)) | bstr.length));
}
/**
* @dev Decode a `ShortString` back to a "normal" string.
*/
function toString(ShortString sstr) internal pure returns (string memory) {
uint256 len = byteLength(sstr);
// using `new string(len)` would work locally but is not memory safe.
string memory str = new string(32);
/// @solidity memory-safe-assembly
assembly {
mstore(str, len)
mstore(add(str, 0x20), sstr)
}
return str;
}
/**
* @dev Return the length of a `ShortString`.
*/
function byteLength(ShortString sstr) internal pure returns (uint256) {
uint256 result = uint256(ShortString.unwrap(sstr)) & 0xFF;
if (result > 31) {
revert InvalidShortString();
}
return result;
}
/**
* @dev Encode a string into a `ShortString`, or write it to storage if it is too long.
*/
function toShortStringWithFallback(string memory value, string storage store) internal returns (ShortString) {
if (bytes(value).length < 32) {
return toShortString(value);
} else {
StorageSlot.getStringSlot(store).value = value;
return ShortString.wrap(FALLBACK_SENTINEL);
}
}
/**
* @dev Decode a string that was encoded to `ShortString` or written to storage using {setWithFallback}.
*/
function toStringWithFallback(ShortString value, string storage store) internal pure returns (string memory) {
if (ShortString.unwrap(value) != FALLBACK_SENTINEL) {
return toString(value);
} else {
return store;
}
}
/**
* @dev Return the length of a string that was encoded to `ShortString` or written to storage using
* {setWithFallback}.
*
* WARNING: This will return the "byte length" of the string. This may not reflect the actual length in terms of
* actual characters as the UTF-8 encoding of a single character can span over multiple bytes.
*/
function byteLengthWithFallback(ShortString value, string storage store) internal view returns (uint256) {
if (ShortString.unwrap(value) != FALLBACK_SENTINEL) {
return byteLength(value);
} else {
return bytes(store).length;
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.
pragma solidity ^0.8.20;
/**
* @dev Library for reading and writing primitive types to specific storage slots.
*
* Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
* This library helps with reading and writing to such slots without the need for inline assembly.
*
* The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
*
* Example usage to set ERC1967 implementation slot:
* ```solidity
* contract ERC1967 {
* bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
*
* function _getImplementation() internal view returns (address) {
* return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
* }
*
* function _setImplementation(address newImplementation) internal {
* require(newImplementation.code.length > 0);
* StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
* }
* }
* ```
*/
library StorageSlot {
struct AddressSlot {
address value;
}
struct BooleanSlot {
bool value;
}
struct Bytes32Slot {
bytes32 value;
}
struct Uint256Slot {
uint256 value;
}
struct StringSlot {
string value;
}
struct BytesSlot {
bytes value;
}
/**
* @dev Returns an `AddressSlot` with member `value` located at `slot`.
*/
function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `BooleanSlot` with member `value` located at `slot`.
*/
function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
*/
function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Uint256Slot` with member `value` located at `slot`.
*/
function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `StringSlot` with member `value` located at `slot`.
*/
function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `StringSlot` representation of the string storage pointer `store`.
*/
function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := store.slot
}
}
/**
* @dev Returns an `BytesSlot` with member `value` located at `slot`.
*/
function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
*/
function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := store.slot
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Strings.sol)
pragma solidity ^0.8.20;
import {Math} from "./math/Math.sol";
import {SignedMath} from "./math/SignedMath.sol";
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant HEX_DIGITS = "0123456789abcdef";
uint8 private constant ADDRESS_LENGTH = 20;
/**
* @dev The `value` string doesn't fit in the specified `length`.
*/
error StringsInsufficientHexLength(uint256 value, uint256 length);
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
unchecked {
uint256 length = Math.log10(value) + 1;
string memory buffer = new string(length);
uint256 ptr;
/// @solidity memory-safe-assembly
assembly {
ptr := add(buffer, add(32, length))
}
while (true) {
ptr--;
/// @solidity memory-safe-assembly
assembly {
mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))
}
value /= 10;
if (value == 0) break;
}
return buffer;
}
}
/**
* @dev Converts a `int256` to its ASCII `string` decimal representation.
*/
function toStringSigned(int256 value) internal pure returns (string memory) {
return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value)));
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
unchecked {
return toHexString(value, Math.log256(value) + 1);
}
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
uint256 localValue = value;
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_DIGITS[localValue & 0xf];
localValue >>= 4;
}
if (localValue != 0) {
revert StringsInsufficientHexLength(value, length);
}
return string(buffer);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal
* representation.
*/
function toHexString(address addr) internal pure returns (string memory) {
return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH);
}
/**
* @dev Returns true if the two strings are equal.
*/
function equal(string memory a, string memory b) internal pure returns (bool) {
return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b));
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
/**
* @title Declares the interface for initializing an NFTCollection contract.
* @author batu-inal & HardlyDifficult
*/
interface INFTCollectionInitializer {
function initialize(address payable _creator, string memory _name, string memory _symbol) external;
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
/**
* @title Declares the type of the collection contract.
* @dev This interface is declared as an ERC-165 interface.
* @author reggieag
*/
interface INFTCollectionType {
function getNFTCollectionType() external view returns (string memory collectionType);
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
/**
* @notice An interface for communicating fees to 3rd party marketplaces.
* @dev Originally implemented in mainnet contract 0x44d6e8933f8271abcf253c72f9ed7e0e4c0323b3
*/
interface IGetFees {
/**
* @notice Get the recipient addresses to which creator royalties should be sent.
* @dev The expected royalty amounts are communicated with `getFeeBps`.
* @param tokenId The ID of the NFT to get royalties for.
* @return recipients An array of addresses to which royalties should be sent.
*/
function getFeeRecipients(uint256 tokenId) external view returns (address payable[] memory recipients);
/**
* @notice Get the creator royalty amounts to be sent to each recipient, in basis points.
* @dev The expected recipients are communicated with `getFeeRecipients`.
* @param tokenId The ID of the NFT to get royalties for.
* @return royaltiesInBasisPoints The array of fees to be sent to each recipient, in basis points.
*/
function getFeeBps(uint256 tokenId) external view returns (uint256[] memory royaltiesInBasisPoints);
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
interface IGetRoyalties {
/**
* @notice Get the creator royalties to be sent.
* @dev The data is the same as when calling `getFeeRecipients` and `getFeeBps` separately.
* @param tokenId The ID of the NFT to get royalties for.
* @return recipients An array of addresses to which royalties should be sent.
* @return royaltiesInBasisPoints The array of fees to be sent to each recipient, in basis points.
*/
function getRoyalties(
uint256 tokenId
) external view returns (address payable[] memory recipients, uint256[] memory royaltiesInBasisPoints);
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
/**
* @notice Interface for EIP-2981: NFT Royalty Standard.
* For more see: https://eips.ethereum.org/EIPS/eip-2981.
*/
interface IRoyaltyInfo {
/**
* @notice Get the creator royalties to be sent.
* @param tokenId The ID of the NFT to get royalties for.
* @param salePrice The total price of the sale.
* @return receiver The address to which royalties should be sent.
* @return royaltyAmount The total amount that should be sent to the `receiver`.
*/
function royaltyInfo(
uint256 tokenId,
uint256 salePrice
) external view returns (address receiver, uint256 royaltyAmount);
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
interface ITokenCreator {
/**
* @notice Returns the creator of this NFT collection.
* @param tokenId The ID of the NFT to get the creator payment address for.
* @return creator The creator of this collection.
*/
function tokenCreator(uint256 tokenId) external view returns (address payable creator);
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import { AddressUpgradeable } from "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
struct CallWithoutValue {
address target;
bytes callData;
}
/**
* @title A library for address helpers not already covered by the OZ library.
* @author batu-inal & HardlyDifficult
*/
library AddressLibrary {
using AddressUpgradeable for address;
using AddressUpgradeable for address payable;
error AddressLibrary_Proxy_Call_Did_Not_Return_A_Contract(address addressReturned);
/**
* @notice Calls an external contract with arbitrary data and parse the return value into an address.
* @param externalContract The address of the contract to call.
* @param callData The data to send to the contract.
* @return contractAddress The address of the contract returned by the call.
*/
function callAndReturnContractAddress(
address externalContract,
bytes calldata callData
) internal returns (address payable contractAddress) {
bytes memory returnData = externalContract.functionCall(callData);
contractAddress = abi.decode(returnData, (address));
if (!contractAddress.isContract()) {
revert AddressLibrary_Proxy_Call_Did_Not_Return_A_Contract(contractAddress);
}
}
function callAndReturnContractAddress(
CallWithoutValue calldata call
) internal returns (address payable contractAddress) {
contractAddress = callAndReturnContractAddress(call.target, call.callData);
}
/**
* @notice Makes multiple external contract calls with arbitrary data.
* @param calls The calls to make.
*/
function multicall(CallWithoutValue[] calldata calls) internal {
for (uint256 i = 0; i < calls.length; ++i) {
calls[i].target.functionCall(calls[i].callData);
}
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import { Strings } from "@openzeppelin/contracts/utils/Strings.sol";
library StringsLibrary {
using Strings for uint256;
error StringsLibrary_Required_String_Is_Empty();
/**
* @notice Converts a number into a string and adds leading "0"s so the total string length matches `digitCount`.
*/
function padLeadingZeros(uint256 value, uint256 digitCount) internal pure returns (string memory paddedString) {
paddedString = value.toString();
for (uint256 i = bytes(paddedString).length; i < digitCount; ) {
paddedString = string.concat("0", paddedString);
unchecked {
++i;
}
}
}
function validateStringNotEmpty(string memory str) internal pure {
if (bytes(str).length == 0) {
revert StringsLibrary_Required_String_Is_Empty();
}
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import "@openzeppelin/contracts-upgradeable-v5/utils/introspection/ERC165Upgradeable.sol";
import "../../interfaces/standards/royalties/IGetFees.sol";
import "../../interfaces/standards/royalties/IGetRoyalties.sol";
import "../../interfaces/standards/royalties/IRoyaltyInfo.sol";
import "../../interfaces/standards/royalties/ITokenCreator.sol";
import "../shared/Constants.sol";
/**
* @title Defines various royalty APIs for broad marketplace support.
* @author batu-inal & HardlyDifficult
*/
abstract contract CollectionRoyalties is IGetRoyalties, IGetFees, IRoyaltyInfo, ITokenCreator, ERC165Upgradeable {
/**
* @inheritdoc IGetFees
*/
function getFeeRecipients(uint256 tokenId) external view returns (address payable[] memory recipients) {
recipients = new address payable[](1);
recipients[0] = getTokenCreatorPaymentAddress(tokenId);
}
/**
* @inheritdoc IGetFees
* @dev The tokenId param is ignored since all NFTs return the same value.
*/
function getFeeBps(uint256 /* tokenId */) external pure returns (uint256[] memory royaltiesInBasisPoints) {
royaltiesInBasisPoints = new uint256[](1);
royaltiesInBasisPoints[0] = ROYALTY_IN_BASIS_POINTS;
}
/**
* @inheritdoc IGetRoyalties
*/
function getRoyalties(
uint256 tokenId
) external view returns (address payable[] memory recipients, uint256[] memory royaltiesInBasisPoints) {
recipients = new address payable[](1);
recipients[0] = getTokenCreatorPaymentAddress(tokenId);
royaltiesInBasisPoints = new uint256[](1);
royaltiesInBasisPoints[0] = ROYALTY_IN_BASIS_POINTS;
}
/**
* @notice The address to pay the creator proceeds/royalties for the collection.
* @param tokenId The ID of the NFT to get the creator payment address for.
* @return creatorPaymentAddress The address to which royalties should be paid.
*/
function getTokenCreatorPaymentAddress(
uint256 tokenId
) public view virtual returns (address payable creatorPaymentAddress);
/**
* @inheritdoc IRoyaltyInfo
*/
function royaltyInfo(
uint256 tokenId,
uint256 salePrice
) external view returns (address receiver, uint256 royaltyAmount) {
receiver = getTokenCreatorPaymentAddress(tokenId);
unchecked {
royaltyAmount = salePrice / ROYALTY_RATIO;
}
}
/**
* @inheritdoc IERC165
* @dev Checks the supported royalty interfaces.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool interfaceSupported) {
interfaceSupported = (interfaceId == type(IRoyaltyInfo).interfaceId ||
interfaceId == type(ITokenCreator).interfaceId ||
interfaceId == type(IGetRoyalties).interfaceId ||
interfaceId == type(IGetFees).interfaceId ||
super.supportsInterface(interfaceId));
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import "@openzeppelin/contracts-upgradeable-v5/utils/introspection/ERC165Upgradeable.sol";
import "@openzeppelin/contracts/utils/ShortStrings.sol";
import "../../interfaces/internal/INFTCollectionType.sol";
/**
* @title A mixin to add the NFTCollectionType interface to a contract.
* @author HardlyDifficult & reggieag
*/
abstract contract NFTCollectionType is INFTCollectionType {
using ShortStrings for string;
using ShortStrings for ShortString;
ShortString private immutable _collectionTypeName;
constructor(string memory collectionTypeName) {
_collectionTypeName = collectionTypeName.toShortString();
}
/**
* @notice Returns a name of the type of collection this contract represents.
* @return collectionType The collection type.
*/
function getNFTCollectionType() external view returns (string memory collectionType) {
collectionType = _collectionTypeName.toString();
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import { ContextUpgradeable } from "@openzeppelin/contracts-upgradeable-v5/utils/ContextUpgradeable.sol";
/**
* @title Allows the contract owner to signal that this contract should no longer be used.
* @author HardlyDifficult
* @dev It's understood that self destruct is no longer functional on-chain. This feature is still used to signal to the
* app that a collection should be hidden.
* This feature may be renamed in the future and may disable the contract instead, e.g. "brick contract".
*/
abstract contract SelfDestructibleCollection is ContextUpgradeable {
/**
* @notice Emitted when this collection is self destructed by the creator/owner/admin.
* @param operator The account which requested this contract be self destructed.
*/
event SelfDestruct(address indexed operator);
error SelfDestructibleCollection_Minted_NFTs_Must_Be_Burned_First(uint256 totalSupply);
function totalSupply() public view virtual returns (uint256 supply);
/**
* @notice Allows the collection owner to signal that this contract should no longer be used only if no NFTs have been
* minted yet or the minted NFTs have been burned.
* @dev The caller is responsible for checking the caller's permissions.
*/
function _selfDestruct() internal {
if (totalSupply() != 0) {
revert SelfDestructibleCollection_Minted_NFTs_Must_Be_Burned_First(totalSupply());
}
address sender = _msgSender();
// The event appears to only emit when called before `selfdestruct`.
emit SelfDestruct(sender);
// It is understood that this is no longer effective. It does still communicate intent and the event allows our
// app to hide these collections. The feature will be reevaluated in the future.
selfdestruct(payable(sender));
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
// solhint-disable max-line-length
import { ITokenCreator } from "../../interfaces/standards/royalties/ITokenCreator.sol";
import { ERC721BurnableUpgradeable } from "@openzeppelin/contracts-upgradeable-v5/token/ERC721/extensions/ERC721BurnableUpgradeable.sol";
import { Ownable2StepUpgradeable } from "@openzeppelin/contracts-upgradeable-v5/access/Ownable2StepUpgradeable.sol";
// solhint-enable max-line-length
/**
* @title Extends the OZ ERC721 implementation for collections which mint sequential token IDs.
* @author batu-inal & HardlyDifficult
*/
abstract contract SequentialMintCollection is ITokenCreator, Ownable2StepUpgradeable, ERC721BurnableUpgradeable {
/**
* @notice The tokenId of the most recently created NFT.
* @dev Minting starts at tokenId 1. Each mint will use this value + 1.
* @return The most recently minted tokenId, or 0 if no NFTs have been minted yet.
*/
uint32 public latestTokenId;
/**
* @notice Tracks how many tokens have been burned.
* @dev This number is used to calculate the total supply efficiently.
*/
uint32 private burnCounter;
function _update(address to, uint256 tokenId, address auth) internal virtual override returns (address from) {
if (to == address(0)) {
_checkOwner();
unchecked {
// Number of burned tokens cannot exceed latestTokenId which is the same size.
++burnCounter;
}
}
from = super._update(to, tokenId, auth);
}
/**
* @inheritdoc ITokenCreator
* @dev The tokenId param is ignored since all NFTs return the same value.
*/
function tokenCreator(uint256 /* tokenId */) external view returns (address payable creator) {
creator = payable(owner());
}
/**
* @notice Returns the total amount of tokens stored by the contract.
* @dev From the ERC-721 enumerable standard.
* @return supply The total number of NFTs tracked by this contract.
*/
function totalSupply() public view virtual returns (uint256 supply) {
unchecked {
// Number of tokens minted is always >= burned tokens.
supply = latestTokenId - burnCounter;
}
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
import "./SequentialMintCollection.sol";
error TokenLimitedCollection_Max_Token_Id_May_Not_Be_Cleared(uint256 currentMaxTokenId);
error TokenLimitedCollection_Max_Token_Id_May_Not_Increase(uint256 currentMaxTokenId);
error TokenLimitedCollection_Max_Token_Id_Must_Be_Greater_Than_Current_Minted_Count(uint256 currentMintedCount);
error TokenLimitedCollection_Max_Token_Id_Must_Not_Be_Zero();
/**
* @title Defines an upper limit on the number of tokens which may be minted by this collection.
* @author HardlyDifficult
*/
abstract contract TokenLimitedCollection is SequentialMintCollection {
/**
* @notice The max tokenId which can be minted.
* @dev This max may be less than the final `totalSupply` if 1 or more tokens were burned.
* @return The max tokenId which can be minted.
*/
uint32 public maxTokenId;
/**
* @notice Emitted when the max tokenId supported by this collection is updated.
* @param maxTokenId The new max tokenId. All NFTs in this collection will have a tokenId less than
* or equal to this value.
*/
event MaxTokenIdUpdated(uint256 indexed maxTokenId);
function _initializeTokenLimitedCollection(uint32 _maxTokenId) internal {
if (_maxTokenId == 0) {
// When 0 is desired, the collection may choose to simply not call this initializer.
revert TokenLimitedCollection_Max_Token_Id_Must_Not_Be_Zero();
}
maxTokenId = _maxTokenId;
}
/**
* @notice Allows the owner to set a max tokenID.
* This provides a guarantee to collectors about the limit of this collection contract, if applicable.
* @dev Once this value has been set, it may be decreased but can never be increased.
* @param _maxTokenId The max tokenId to set, all NFTs must have a tokenId less than or equal to this value.
*/
function _updateMaxTokenId(uint32 _maxTokenId) internal {
if (_maxTokenId == 0) {
revert TokenLimitedCollection_Max_Token_Id_May_Not_Be_Cleared(maxTokenId);
}
if (maxTokenId != 0 && _maxTokenId >= maxTokenId) {
revert TokenLimitedCollection_Max_Token_Id_May_Not_Increase(maxTokenId);
}
if (latestTokenId > _maxTokenId) {
revert TokenLimitedCollection_Max_Token_Id_Must_Be_Greater_Than_Current_Minted_Count(latestTokenId);
}
maxTokenId = _maxTokenId;
emit MaxTokenIdUpdated(_maxTokenId);
}
}// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.18;
/// Constant values shared across mixins.
/// @dev 100% in basis points.
uint256 constant BASIS_POINTS = 10_000;
/// @dev The default admin role defined by OZ ACL modules.
bytes32 constant DEFAULT_ADMIN_ROLE = 0x00;
/// @dev The `role` type used to validate drop collections have granted this market access to mint.
bytes32 constant MINTER_ROLE = keccak256("MINTER_ROLE");
////////////////////////////////////////////////////////////////
// Royalties & Take Rates
////////////////////////////////////////////////////////////////
/// @dev The max take rate a World can have.
uint256 constant MAX_WORLD_TAKE_RATE = 5_000;
/// @dev Cap the number of royalty recipients.
/// A cap is required to ensure gas costs are not too high when a sale is settled.
uint256 constant MAX_ROYALTY_RECIPIENTS = 5;
/// @dev Default royalty cut paid out on secondary sales.
/// Set to 10% of the secondary sale.
uint96 constant ROYALTY_IN_BASIS_POINTS = 1_000;
/// @dev Reward paid to referrers when a sale is made.
/// Set to 20% of the protocol fee.
uint96 constant BUY_REFERRER_IN_BASIS_POINTS = 2000;
/// @dev 10%, expressed as a denominator for more efficient calculations.
uint256 constant ROYALTY_RATIO = BASIS_POINTS / ROYALTY_IN_BASIS_POINTS;
/// @dev 20%, expressed as a denominator for more efficient calculations.
uint256 constant BUY_REFERRER_RATIO = BASIS_POINTS / BUY_REFERRER_IN_BASIS_POINTS;
////////////////////////////////////////////////////////////////
// Gas Limits
////////////////////////////////////////////////////////////////
/// @dev The gas limit used when making external read-only calls.
/// This helps to ensure that external calls does not prevent the market from executing.
uint256 constant READ_ONLY_GAS_LIMIT = 40_000;
/// @dev The gas limit to send ETH to multiple recipients, enough for a 5-way split.
uint256 constant SEND_VALUE_GAS_LIMIT_MULTIPLE_RECIPIENTS = 210_000;
/// @dev The gas limit to send ETH to a single recipient, enough for a contract with a simple receiver.
uint256 constant SEND_VALUE_GAS_LIMIT_SINGLE_RECIPIENT = 20_000;
////////////////////////////////////////////////////////////////
// Collection Type Names
////////////////////////////////////////////////////////////////
/// @dev The NFT collection type.
string constant NFT_COLLECTION_TYPE = "NFT Collection";
/// @dev The NFT drop collection type.
string constant NFT_DROP_COLLECTION_TYPE = "NFT Drop Collection";
/// @dev The NFT timed edition collection type.
string constant NFT_TIMED_EDITION_COLLECTION_TYPE = "NFT Timed Edition Collection";
/// @dev The NFT limited edition collection type.
string constant NFT_LIMITED_EDITION_COLLECTION_TYPE = "NFT Limited Edition Collection";
/// @dev The Multi-Token (ERC-1155) collection type.
string constant MULTI_TOKEN_COLLECTION_TYPE = "Multi-Token Collection";
////////////////////////////////////////////////////////////////
// Business Logic
////////////////////////////////////////////////////////////////
/// @dev Limits scheduled start/end times to be less than 2 years in the future.
uint256 constant MAX_SCHEDULED_TIME_IN_THE_FUTURE = 365 days * 2;
/// @dev The minimum increase of 10% required when making an offer or placing a bid.
uint256 constant MIN_PERCENT_INCREMENT_DENOMINATOR = BASIS_POINTS / 1_000;
/// @dev The fixed fee charged for each NFT minted.
uint256 constant MINT_FEE_IN_WEI = 0.0008 ether;
/// @dev Default for how long an auction lasts for once the first bid has been received.
uint256 constant DEFAULT_DURATION = 1 days;
/// @dev The window for auction extensions, any bid placed in the final 5 minutes
/// of an auction will reset the time remaining to 5 minutes.
uint256 constant EXTENSION_DURATION = 5 minutes;
/// @dev Caps the max duration that may be configured for an auction.
uint256 constant MAX_DURATION = 7 days;{
"optimizer": {
"enabled": true,
"runs": 1337000
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"evmVersion": "paris",
"metadata": {
"useLiteralContent": true
},
"libraries": {}
}Contract ABI
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.