Contract Name:
DropERC721M
Contract Source Code:
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* [EIP](https://eips.ethereum.org/EIPS/eip-165).
*
* 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
* [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
* 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: Apache-2.0
pragma solidity ^0.8.0;
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender) external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value) external returns (bool);
function transferFrom(address from, address to, uint256 value) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: Apache 2.0
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Interface for the NFT Royalty Standard.
*
* A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
* support for royalty payments across all NFT marketplaces and ecosystem participants.
*
* _Available since v4.5._
*/
interface IERC2981 is IERC165 {
/**
* @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
* exchange. The royalty amount is denominated and should be payed in that same unit of exchange.
*/
function royaltyInfo(
uint256 tokenId,
uint256 salePrice
) external view returns (address receiver, uint256 royaltyAmount);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 {
/**
* @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);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
/**
* @title Batch-mint Metadata
* @notice The `BatchMintMetadata` is a contract extension for any base NFT contract. It lets the smart contract
* using this extension set metadata for `n` number of NFTs all at once. This is enabled by storing a single
* base URI for a batch of `n` NFTs, where the metadata for each NFT in a relevant batch is `baseURI/tokenId`.
*/
contract BatchMintMetadata {
/// @dev Invalid index for batch
error BatchMintInvalidBatchId(uint256 index);
/// @dev Invalid token
error BatchMintInvalidTokenId(uint256 tokenId);
/// @dev Metadata frozen
error BatchMintMetadataFrozen(uint256 batchId);
/// @dev Largest tokenId of each batch of tokens with the same baseURI + 1 {ex: batchId 100 at position 0 includes tokens 0-99}
uint256[] private batchIds;
/// @dev Mapping from id of a batch of tokens => to base URI for the respective batch of tokens.
mapping(uint256 => string) private baseURI;
/// @dev Mapping from id of a batch of tokens => to whether the base URI for the respective batch of tokens is frozen.
mapping(uint256 => bool) public batchFrozen;
/// @dev This event emits when the metadata of all tokens are frozen.
/// While not currently supported by marketplaces, this event allows
/// future indexing if desired.
event MetadataFrozen();
// @dev This event emits when the metadata of a range of tokens is updated.
/// So that the third-party platforms such as NFT market could
/// timely update the images and related attributes of the NFTs.
event BatchMetadataUpdate(uint256 _fromTokenId, uint256 _toTokenId);
/**
* @notice Returns the count of batches of NFTs.
* @dev Each batch of tokens has an in ID and an associated `baseURI`.
* See {batchIds}.
*/
function getBaseURICount() public view returns (uint256) {
return batchIds.length;
}
/**
* @notice Returns the ID for the batch of tokens at the given index.
* @dev See {getBaseURICount}.
* @param _index Index of the desired batch in batchIds array.
*/
function getBatchIdAtIndex(uint256 _index) public view returns (uint256) {
if (_index >= getBaseURICount()) {
revert BatchMintInvalidBatchId(_index);
}
return batchIds[_index];
}
/// @dev Returns the id for the batch of tokens the given tokenId belongs to.
function _getBatchId(uint256 _tokenId) internal view returns (uint256 batchId, uint256 index) {
uint256 numOfTokenBatches = getBaseURICount();
uint256[] memory indices = batchIds;
for (uint256 i = 0; i < numOfTokenBatches; i += 1) {
if (_tokenId < indices[i]) {
index = i;
batchId = indices[i];
return (batchId, index);
}
}
revert BatchMintInvalidTokenId(_tokenId);
}
/// @dev Returns the baseURI for a token. The intended metadata URI for the token is baseURI + tokenId.
function _getBaseURI(uint256 _tokenId) internal view returns (string memory) {
uint256 numOfTokenBatches = getBaseURICount();
uint256[] memory indices = batchIds;
for (uint256 i = 0; i < numOfTokenBatches; i += 1) {
if (_tokenId < indices[i]) {
return baseURI[indices[i]];
}
}
revert BatchMintInvalidTokenId(_tokenId);
}
/// @dev returns the starting tokenId of a given batchId.
function _getBatchStartId(uint256 _batchID) internal view returns (uint256) {
uint256 numOfTokenBatches = getBaseURICount();
uint256[] memory indices = batchIds;
for (uint256 i = 0; i < numOfTokenBatches; i++) {
if (_batchID == indices[i]) {
if (i > 0) {
return indices[i - 1];
}
return 0;
}
}
revert BatchMintInvalidBatchId(_batchID);
}
/// @dev Sets the base URI for the batch of tokens with the given batchId.
function _setBaseURI(uint256 _batchId, string memory _baseURI) internal {
if (batchFrozen[_batchId]) {
revert BatchMintMetadataFrozen(_batchId);
}
baseURI[_batchId] = _baseURI;
emit BatchMetadataUpdate(_getBatchStartId(_batchId), _batchId);
}
/// @dev Freezes the base URI for the batch of tokens with the given batchId.
function _freezeBaseURI(uint256 _batchId) internal {
string memory baseURIForBatch = baseURI[_batchId];
if (bytes(baseURIForBatch).length == 0) {
revert BatchMintInvalidBatchId(_batchId);
}
batchFrozen[_batchId] = true;
emit MetadataFrozen();
}
/// @dev Mints a batch of tokenIds and associates a common baseURI to all those Ids.
function _batchMintMetadata(
uint256 _startId,
uint256 _amountToMint,
string memory _baseURIForTokens
) internal returns (uint256 nextTokenIdToMint, uint256 batchId) {
batchId = _startId + _amountToMint;
nextTokenIdToMint = batchId;
batchIds.push(batchId);
baseURI[batchId] = _baseURIForTokens;
}
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "./interface/IContractMetadata.sol";
/**
* @title Contract Metadata
* @notice Thirdweb's `ContractMetadata` is a contract extension for any base contracts. It lets you set a metadata URI
* for you contract.
* Additionally, `ContractMetadata` is necessary for NFT contracts that want royalties to get distributed on OpenSea.
*/
abstract contract ContractMetadata is IContractMetadata {
/// @dev The sender is not authorized to perform the action
error ContractMetadataUnauthorized();
/// @notice Returns the contract metadata URI.
string public override contractURI;
/**
* @notice Lets a contract admin set the URI for contract-level metadata.
* @dev Caller should be authorized to setup contractURI, e.g. contract admin.
* See {_canSetContractURI}.
* Emits {ContractURIUpdated Event}.
*
* @param _uri keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE")
*/
function setContractURI(string memory _uri) external override {
if (!_canSetContractURI()) {
revert ContractMetadataUnauthorized();
}
_setupContractURI(_uri);
}
/// @dev Lets a contract admin set the URI for contract-level metadata.
function _setupContractURI(string memory _uri) internal {
string memory prevURI = contractURI;
contractURI = _uri;
emit ContractURIUpdated(prevURI, _uri);
}
/// @dev Returns whether contract metadata can be set in the given execution context.
function _canSetContractURI() internal view virtual returns (bool);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "./interface/IDrop.sol";
import "../lib/MerkleProof.sol";
abstract contract Drop is IDrop {
/// @dev The sender is not authorized to perform the action
error DropUnauthorized();
/// @dev Exceeded the max token total supply
error DropExceedMaxSupply();
/// @dev No active claim condition
error DropNoActiveCondition();
/// @dev Claim condition invalid currency or price
error DropClaimInvalidTokenPrice(
address expectedCurrency,
uint256 expectedPricePerToken,
address actualCurrency,
uint256 actualExpectedPricePerToken
);
/// @dev Claim condition exceeded limit
error DropClaimExceedLimit(uint256 expected, uint256 actual);
/// @dev Claim condition exceeded max supply
error DropClaimExceedMaxSupply(uint256 expected, uint256 actual);
/// @dev Claim condition not started yet
error DropClaimNotStarted(uint256 expected, uint256 actual);
/*///////////////////////////////////////////////////////////////
State variables
//////////////////////////////////////////////////////////////*/
/// @dev The active conditions for claiming tokens.
ClaimConditionList public claimCondition;
/*///////////////////////////////////////////////////////////////
Drop logic
//////////////////////////////////////////////////////////////*/
/// @dev Lets an account claim tokens.
function claim(
address _receiver,
uint256 _quantity,
address _currency,
uint256 _pricePerToken,
AllowlistProof calldata _allowlistProof,
bytes memory _data
) public payable virtual override {
_beforeClaim(_receiver, _quantity, _currency, _pricePerToken, _allowlistProof, _data);
uint256 activeConditionId = getActiveClaimConditionId();
verifyClaim(activeConditionId, _dropMsgSender(), _quantity, _currency, _pricePerToken, _allowlistProof);
// Update contract state.
claimCondition.conditions[activeConditionId].supplyClaimed += _quantity;
claimCondition.supplyClaimedByWallet[activeConditionId][_dropMsgSender()] += _quantity;
// If there's a price, collect price.
_collectPriceOnClaim(address(0), _quantity, _currency, _pricePerToken);
// Mint the relevant tokens to claimer.
uint256 startTokenId = _transferTokensOnClaim(_receiver, _quantity);
emit TokensClaimed(activeConditionId, _dropMsgSender(), _receiver, startTokenId, _quantity);
_afterClaim(_receiver, _quantity, _currency, _pricePerToken, _allowlistProof, _data);
}
/// @dev Lets a contract admin set claim conditions.
function setClaimConditions(
ClaimCondition[] calldata _conditions,
bool _resetClaimEligibility
) external virtual override {
if (!_canSetClaimConditions()) {
revert DropUnauthorized();
}
uint256 existingStartIndex = claimCondition.currentStartId;
uint256 existingPhaseCount = claimCondition.count;
/**
* The mapping `supplyClaimedByWallet` uses a claim condition's UID as a key.
*
* If `_resetClaimEligibility == true`, we assign completely new UIDs to the claim
* conditions in `_conditions`, effectively resetting the restrictions on claims expressed
* by `supplyClaimedByWallet`.
*/
uint256 newStartIndex = existingStartIndex;
if (_resetClaimEligibility) {
newStartIndex = existingStartIndex + existingPhaseCount;
}
claimCondition.count = _conditions.length;
claimCondition.currentStartId = newStartIndex;
uint256 lastConditionStartTimestamp;
for (uint256 i = 0; i < _conditions.length; i++) {
require(i == 0 || lastConditionStartTimestamp < _conditions[i].startTimestamp, "ST");
uint256 supplyClaimedAlready = claimCondition.conditions[newStartIndex + i].supplyClaimed;
if (supplyClaimedAlready > _conditions[i].maxClaimableSupply) {
revert DropExceedMaxSupply();
}
claimCondition.conditions[newStartIndex + i] = _conditions[i];
claimCondition.conditions[newStartIndex + i].supplyClaimed = supplyClaimedAlready;
lastConditionStartTimestamp = _conditions[i].startTimestamp;
}
/**
* Gas refunds (as much as possible)
*
* If `_resetClaimEligibility == true`, we assign completely new UIDs to the claim
* conditions in `_conditions`. So, we delete claim conditions with UID < `newStartIndex`.
*
* If `_resetClaimEligibility == false`, and there are more existing claim conditions
* than in `_conditions`, we delete the existing claim conditions that don't get replaced
* by the conditions in `_conditions`.
*/
if (_resetClaimEligibility) {
for (uint256 i = existingStartIndex; i < newStartIndex; i++) {
delete claimCondition.conditions[i];
}
} else {
if (existingPhaseCount > _conditions.length) {
for (uint256 i = _conditions.length; i < existingPhaseCount; i++) {
delete claimCondition.conditions[newStartIndex + i];
}
}
}
emit ClaimConditionsUpdated(_conditions, _resetClaimEligibility);
}
/// @dev Checks a request to claim NFTs against the active claim condition's criteria.
function verifyClaim(
uint256 _conditionId,
address _claimer,
uint256 _quantity,
address _currency,
uint256 _pricePerToken,
AllowlistProof calldata _allowlistProof
) public view virtual returns (bool isOverride) {
ClaimCondition memory currentClaimPhase = claimCondition.conditions[_conditionId];
uint256 claimLimit = currentClaimPhase.quantityLimitPerWallet;
uint256 claimPrice = currentClaimPhase.pricePerToken;
address claimCurrency = currentClaimPhase.currency;
/*
* Here `isOverride` implies that if the merkle proof verification fails,
* the claimer would claim through open claim limit instead of allowlisted limit.
*/
if (currentClaimPhase.merkleRoot != bytes32(0)) {
(isOverride, ) = MerkleProof.verify(
_allowlistProof.proof,
currentClaimPhase.merkleRoot,
keccak256(
abi.encodePacked(
_claimer,
_allowlistProof.quantityLimitPerWallet,
_allowlistProof.pricePerToken,
_allowlistProof.currency
)
)
);
}
if (isOverride) {
claimLimit = _allowlistProof.quantityLimitPerWallet != 0
? _allowlistProof.quantityLimitPerWallet
: claimLimit;
claimPrice = _allowlistProof.pricePerToken != type(uint256).max
? _allowlistProof.pricePerToken
: claimPrice;
claimCurrency = _allowlistProof.pricePerToken != type(uint256).max && _allowlistProof.currency != address(0)
? _allowlistProof.currency
: claimCurrency;
}
uint256 supplyClaimedByWallet = claimCondition.supplyClaimedByWallet[_conditionId][_claimer];
if (_currency != claimCurrency || _pricePerToken != claimPrice) {
revert DropClaimInvalidTokenPrice(_currency, _pricePerToken, claimCurrency, claimPrice);
}
if (_quantity == 0 || (_quantity + supplyClaimedByWallet > claimLimit)) {
revert DropClaimExceedLimit(claimLimit, _quantity + supplyClaimedByWallet);
}
if (currentClaimPhase.supplyClaimed + _quantity > currentClaimPhase.maxClaimableSupply) {
revert DropClaimExceedMaxSupply(
currentClaimPhase.maxClaimableSupply,
currentClaimPhase.supplyClaimed + _quantity
);
}
if (currentClaimPhase.startTimestamp > block.timestamp) {
revert DropClaimNotStarted(currentClaimPhase.startTimestamp, block.timestamp);
}
}
/// @dev At any given moment, returns the uid for the active claim condition.
function getActiveClaimConditionId() public view returns (uint256) {
for (uint256 i = claimCondition.currentStartId + claimCondition.count; i > claimCondition.currentStartId; i--) {
if (block.timestamp >= claimCondition.conditions[i - 1].startTimestamp) {
return i - 1;
}
}
revert DropNoActiveCondition();
}
/// @dev Returns the claim condition at the given uid.
function getClaimConditionById(uint256 _conditionId) external view returns (ClaimCondition memory condition) {
condition = claimCondition.conditions[_conditionId];
}
/// @dev Returns the supply claimed by claimer for a given conditionId.
function getSupplyClaimedByWallet(
uint256 _conditionId,
address _claimer
) public view returns (uint256 supplyClaimedByWallet) {
supplyClaimedByWallet = claimCondition.supplyClaimedByWallet[_conditionId][_claimer];
}
/*////////////////////////////////////////////////////////////////////
Optional hooks that can be implemented in the derived contract
///////////////////////////////////////////////////////////////////*/
/// @dev Exposes the ability to override the msg sender.
function _dropMsgSender() internal virtual returns (address) {
return msg.sender;
}
/// @dev Runs before every `claim` function call.
function _beforeClaim(
address _receiver,
uint256 _quantity,
address _currency,
uint256 _pricePerToken,
AllowlistProof calldata _allowlistProof,
bytes memory _data
) internal virtual {}
/// @dev Runs after every `claim` function call.
function _afterClaim(
address _receiver,
uint256 _quantity,
address _currency,
uint256 _pricePerToken,
AllowlistProof calldata _allowlistProof,
bytes memory _data
) internal virtual {}
/*///////////////////////////////////////////////////////////////
Virtual functions: to be implemented in derived contract
//////////////////////////////////////////////////////////////*/
/// @dev Collects and distributes the primary sale value of NFTs being claimed.
function _collectPriceOnClaim(
address _primarySaleRecipient,
uint256 _quantityToClaim,
address _currency,
uint256 _pricePerToken
) internal virtual;
/// @dev Transfers the NFTs being claimed.
function _transferTokensOnClaim(
address _to,
uint256 _quantityBeingClaimed
) internal virtual returns (uint256 startTokenId);
/// @dev Determine what wallet can update claim conditions
function _canSetClaimConditions() internal view virtual returns (bool);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "./interface/ILazyMint.sol";
import "./BatchMintMetadata.sol";
/**
* The `LazyMint` is a contract extension for any base NFT contract. It lets you 'lazy mint' any number of NFTs
* at once. Here, 'lazy mint' means defining the metadata for particular tokenIds of your NFT contract, without actually
* minting a non-zero balance of NFTs of those tokenIds.
*/
abstract contract LazyMint is ILazyMint, BatchMintMetadata {
/// @dev The sender is not authorized to perform the action
error LazyMintUnauthorized();
error LazyMintInvalidAmount();
/// @notice The tokenId assigned to the next new NFT to be lazy minted.
uint256 internal nextTokenIdToLazyMint;
/**
* @notice Lets an authorized address lazy mint a given amount of NFTs.
*
* @param _amount The number of NFTs to lazy mint.
* @param _baseURIForTokens The base URI for the 'n' number of NFTs being lazy minted, where the metadata for each
* of those NFTs is `${baseURIForTokens}/${tokenId}`.
* @param _data Additional bytes data to be used at the discretion of the consumer of the contract.
* @return batchId A unique integer identifier for the batch of NFTs lazy minted together.
*/
function lazyMint(
uint256 _amount,
string calldata _baseURIForTokens,
bytes calldata _data
) public virtual override returns (uint256 batchId) {
if (!_canLazyMint()) {
revert LazyMintUnauthorized();
}
if (_amount == 0) {
revert LazyMintInvalidAmount();
}
uint256 startId = nextTokenIdToLazyMint;
(nextTokenIdToLazyMint, batchId) = _batchMintMetadata(startId, _amount, _baseURIForTokens);
emit TokensLazyMinted(startId, startId + _amount - 1, _baseURIForTokens, _data);
return batchId;
}
/// @dev Returns whether lazy minting can be performed in the given execution context.
function _canLazyMint() internal view virtual returns (bool);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "./interface/IOwnable.sol";
/**
* @title Ownable
* @notice Thirdweb's `Ownable` is a contract extension to be used with any base contract. It exposes functions for setting and reading
* who the 'owner' of the inheriting smart contract is, and lets the inheriting contract perform conditional logic that uses
* information about who the contract's owner is.
*/
abstract contract Ownable is IOwnable {
/// @dev The sender is not authorized to perform the action
error OwnableUnauthorized();
/// @dev Owner of the contract (purpose: OpenSea compatibility)
address private _owner;
/// @dev Reverts if caller is not the owner.
modifier onlyOwner() {
if (msg.sender != _owner) {
revert OwnableUnauthorized();
}
_;
}
/**
* @notice Returns the owner of the contract.
*/
function owner() public view override returns (address) {
return _owner;
}
/**
* @notice Lets an authorized wallet set a new owner for the contract.
* @param _newOwner The address to set as the new owner of the contract.
*/
function setOwner(address _newOwner) external override {
if (!_canSetOwner()) {
revert OwnableUnauthorized();
}
_setupOwner(_newOwner);
}
/// @dev Lets a contract admin set a new owner for the contract. The new owner must be a contract admin.
function _setupOwner(address _newOwner) internal {
address _prevOwner = _owner;
_owner = _newOwner;
emit OwnerUpdated(_prevOwner, _newOwner);
}
/// @dev Returns whether owner can be set in the given execution context.
function _canSetOwner() internal view virtual returns (bool);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "./interface/IPermissions.sol";
import "../lib/Strings.sol";
/**
* @title Permissions
* @dev This contracts provides extending-contracts with role-based access control mechanisms
*/
contract Permissions is IPermissions {
/// @dev The `account` is missing a role.
error PermissionsUnauthorizedAccount(address account, bytes32 neededRole);
/// @dev The `account` already is a holder of `role`
error PermissionsAlreadyGranted(address account, bytes32 role);
/// @dev Invalid priviledge to revoke
error PermissionsInvalidPermission(address expected, address actual);
/// @dev Map from keccak256 hash of a role => a map from address => whether address has role.
mapping(bytes32 => mapping(address => bool)) private _hasRole;
/// @dev Map from keccak256 hash of a role to role admin. See {getRoleAdmin}.
mapping(bytes32 => bytes32) private _getRoleAdmin;
/// @dev Default admin role for all roles. Only accounts with this role can grant/revoke other roles.
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
/// @dev Modifier that checks if an account has the specified role; reverts otherwise.
modifier onlyRole(bytes32 role) {
_checkRole(role, msg.sender);
_;
}
/**
* @notice Checks whether an account has a particular role.
* @dev Returns `true` if `account` has been granted `role`.
*
* @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE")
* @param account Address of the account for which the role is being checked.
*/
function hasRole(bytes32 role, address account) public view override returns (bool) {
return _hasRole[role][account];
}
/**
* @notice Checks whether an account has a particular role;
* role restrictions can be swtiched on and off.
*
* @dev Returns `true` if `account` has been granted `role`.
* Role restrictions can be swtiched on and off:
* - If address(0) has ROLE, then the ROLE restrictions
* don't apply.
* - If address(0) does not have ROLE, then the ROLE
* restrictions will apply.
*
* @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE")
* @param account Address of the account for which the role is being checked.
*/
function hasRoleWithSwitch(bytes32 role, address account) public view returns (bool) {
if (!_hasRole[role][address(0)]) {
return _hasRole[role][account];
}
return true;
}
/**
* @notice Returns the admin role that controls the specified role.
* @dev See {grantRole} and {revokeRole}.
* To change a role's admin, use {_setRoleAdmin}.
*
* @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE")
*/
function getRoleAdmin(bytes32 role) external view override returns (bytes32) {
return _getRoleAdmin[role];
}
/**
* @notice Grants a role to an account, if not previously granted.
* @dev Caller must have admin role for the `role`.
* Emits {RoleGranted Event}.
*
* @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE")
* @param account Address of the account to which the role is being granted.
*/
function grantRole(bytes32 role, address account) public virtual override {
_checkRole(_getRoleAdmin[role], msg.sender);
if (_hasRole[role][account]) {
revert PermissionsAlreadyGranted(account, role);
}
_setupRole(role, account);
}
/**
* @notice Revokes role from an account.
* @dev Caller must have admin role for the `role`.
* Emits {RoleRevoked Event}.
*
* @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE")
* @param account Address of the account from which the role is being revoked.
*/
function revokeRole(bytes32 role, address account) public virtual override {
_checkRole(_getRoleAdmin[role], msg.sender);
_revokeRole(role, account);
}
/**
* @notice Revokes role from the account.
* @dev Caller must have the `role`, with caller being the same as `account`.
* Emits {RoleRevoked Event}.
*
* @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE")
* @param account Address of the account from which the role is being revoked.
*/
function renounceRole(bytes32 role, address account) public virtual override {
if (msg.sender != account) {
revert PermissionsInvalidPermission(msg.sender, account);
}
_revokeRole(role, account);
}
/// @dev Sets `adminRole` as `role`'s admin role.
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
bytes32 previousAdminRole = _getRoleAdmin[role];
_getRoleAdmin[role] = adminRole;
emit RoleAdminChanged(role, previousAdminRole, adminRole);
}
/// @dev Sets up `role` for `account`
function _setupRole(bytes32 role, address account) internal virtual {
_hasRole[role][account] = true;
emit RoleGranted(role, account, msg.sender);
}
/// @dev Revokes `role` from `account`
function _revokeRole(bytes32 role, address account) internal virtual {
_checkRole(role, account);
delete _hasRole[role][account];
emit RoleRevoked(role, account, msg.sender);
}
/// @dev Checks `role` for `account`. Reverts with a message including the required role.
function _checkRole(bytes32 role, address account) internal view virtual {
if (!_hasRole[role][account]) {
revert PermissionsUnauthorizedAccount(account, role);
}
}
/// @dev Checks `role` for `account`. Reverts with a message including the required role.
function _checkRoleWithSwitch(bytes32 role, address account) internal view virtual {
if (!hasRoleWithSwitch(role, account)) {
revert PermissionsUnauthorizedAccount(account, role);
}
}
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "./interface/IPermissionsEnumerable.sol";
import "./Permissions.sol";
/**
* @title PermissionsEnumerable
* @dev This contracts provides extending-contracts with role-based access control mechanisms.
* Also provides interfaces to view all members with a given role, and total count of members.
*/
contract PermissionsEnumerable is IPermissionsEnumerable, Permissions {
/**
* @notice A data structure to store data of members for a given role.
*
* @param index Current index in the list of accounts that have a role.
* @param members map from index => address of account that has a role
* @param indexOf map from address => index which the account has.
*/
struct RoleMembers {
uint256 index;
mapping(uint256 => address) members;
mapping(address => uint256) indexOf;
}
/// @dev map from keccak256 hash of a role to its members' data. See {RoleMembers}.
mapping(bytes32 => RoleMembers) private roleMembers;
/**
* @notice Returns the role-member from a list of members for a role,
* at a given index.
* @dev Returns `member` who has `role`, at `index` of role-members list.
* See struct {RoleMembers}, and mapping {roleMembers}
*
* @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE")
* @param index Index in list of current members for the role.
*
* @return member Address of account that has `role`
*/
function getRoleMember(bytes32 role, uint256 index) external view override returns (address member) {
uint256 currentIndex = roleMembers[role].index;
uint256 check;
for (uint256 i = 0; i < currentIndex; i += 1) {
if (roleMembers[role].members[i] != address(0)) {
if (check == index) {
member = roleMembers[role].members[i];
return member;
}
check += 1;
} else if (hasRole(role, address(0)) && i == roleMembers[role].indexOf[address(0)]) {
check += 1;
}
}
}
/**
* @notice Returns total number of accounts that have a role.
* @dev Returns `count` of accounts that have `role`.
* See struct {RoleMembers}, and mapping {roleMembers}
*
* @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE")
*
* @return count Total number of accounts that have `role`
*/
function getRoleMemberCount(bytes32 role) external view override returns (uint256 count) {
uint256 currentIndex = roleMembers[role].index;
for (uint256 i = 0; i < currentIndex; i += 1) {
if (roleMembers[role].members[i] != address(0)) {
count += 1;
}
}
if (hasRole(role, address(0))) {
count += 1;
}
}
/// @dev Revokes `role` from `account`, and removes `account` from {roleMembers}
/// See {_removeMember}
function _revokeRole(bytes32 role, address account) internal override {
super._revokeRole(role, account);
_removeMember(role, account);
}
/// @dev Grants `role` to `account`, and adds `account` to {roleMembers}
/// See {_addMember}
function _setupRole(bytes32 role, address account) internal override {
super._setupRole(role, account);
_addMember(role, account);
}
/// @dev adds `account` to {roleMembers}, for `role`
function _addMember(bytes32 role, address account) internal {
uint256 idx = roleMembers[role].index;
roleMembers[role].index += 1;
roleMembers[role].members[idx] = account;
roleMembers[role].indexOf[account] = idx;
}
/// @dev removes `account` from {roleMembers}, for `role`
function _removeMember(bytes32 role, address account) internal {
uint256 idx = roleMembers[role].indexOf[account];
delete roleMembers[role].members[idx];
delete roleMembers[role].indexOf[account];
}
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "./interface/IPlatformFee.sol";
/**
* @title Platform Fee
* @notice Thirdweb's `PlatformFee` is a contract extension to be used with any base contract. It exposes functions for setting and reading
* the recipient of platform fee and the platform fee basis points, and lets the inheriting contract perform conditional logic
* that uses information about platform fees, if desired.
*/
abstract contract PlatformFee is IPlatformFee {
/// @dev The sender is not authorized to perform the action
error PlatformFeeUnauthorized();
/// @dev The recipient is invalid
error PlatformFeeInvalidRecipient(address recipient);
/// @dev The fee bps exceeded the max value
error PlatformFeeExceededMaxFeeBps(uint256 max, uint256 actual);
/// @dev The address that receives all platform fees from all sales.
address private platformFeeRecipient;
/// @dev The % of primary sales collected as platform fees.
uint16 private platformFeeBps;
/// @dev Fee type variants: percentage fee and flat fee
PlatformFeeType private platformFeeType;
/// @dev The flat amount collected by the contract as fees on primary sales.
uint256 private flatPlatformFee;
/// @dev Returns the platform fee recipient and bps.
function getPlatformFeeInfo() public view override returns (address, uint16) {
return (platformFeeRecipient, uint16(platformFeeBps));
}
/// @dev Returns the platform fee bps and recipient.
function getFlatPlatformFeeInfo() public view returns (address, uint256) {
return (platformFeeRecipient, flatPlatformFee);
}
/// @dev Returns the platform fee type.
function getPlatformFeeType() public view returns (PlatformFeeType) {
return platformFeeType;
}
/**
* @notice Updates the platform fee recipient and bps.
* @dev Caller should be authorized to set platform fee info.
* See {_canSetPlatformFeeInfo}.
* Emits {PlatformFeeInfoUpdated Event}; See {_setupPlatformFeeInfo}.
*
* @param _platformFeeRecipient Address to be set as new platformFeeRecipient.
* @param _platformFeeBps Updated platformFeeBps.
*/
function setPlatformFeeInfo(address _platformFeeRecipient, uint256 _platformFeeBps) external override {
if (!_canSetPlatformFeeInfo()) {
revert PlatformFeeUnauthorized();
}
_setupPlatformFeeInfo(_platformFeeRecipient, _platformFeeBps);
}
/// @dev Sets the platform fee recipient and bps
function _setupPlatformFeeInfo(address _platformFeeRecipient, uint256 _platformFeeBps) internal {
if (_platformFeeBps > 10_000) {
revert PlatformFeeExceededMaxFeeBps(10_000, _platformFeeBps);
}
if (_platformFeeRecipient == address(0)) {
revert PlatformFeeInvalidRecipient(_platformFeeRecipient);
}
platformFeeBps = uint16(_platformFeeBps);
platformFeeRecipient = _platformFeeRecipient;
emit PlatformFeeInfoUpdated(_platformFeeRecipient, _platformFeeBps);
}
/// @notice Lets a module admin set a flat fee on primary sales.
function setFlatPlatformFeeInfo(address _platformFeeRecipient, uint256 _flatFee) external {
if (!_canSetPlatformFeeInfo()) {
revert PlatformFeeUnauthorized();
}
_setupFlatPlatformFeeInfo(_platformFeeRecipient, _flatFee);
}
/// @dev Sets a flat fee on primary sales.
function _setupFlatPlatformFeeInfo(address _platformFeeRecipient, uint256 _flatFee) internal {
flatPlatformFee = _flatFee;
platformFeeRecipient = _platformFeeRecipient;
emit FlatPlatformFeeUpdated(_platformFeeRecipient, _flatFee);
}
/// @notice Lets a module admin set platform fee type.
function setPlatformFeeType(PlatformFeeType _feeType) external {
if (!_canSetPlatformFeeInfo()) {
revert PlatformFeeUnauthorized();
}
_setupPlatformFeeType(_feeType);
}
/// @dev Sets platform fee type.
function _setupPlatformFeeType(PlatformFeeType _feeType) internal {
platformFeeType = _feeType;
emit PlatformFeeTypeUpdated(_feeType);
}
/// @dev Returns whether platform fee info can be set in the given execution context.
function _canSetPlatformFeeInfo() internal view virtual returns (bool);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "./interface/IPrimarySale.sol";
/**
* @title Primary Sale
* @notice Thirdweb's `PrimarySale` is a contract extension to be used with any base contract. It exposes functions for setting and reading
* the recipient of primary sales, and lets the inheriting contract perform conditional logic that uses information about
* primary sales, if desired.
*/
abstract contract PrimarySale is IPrimarySale {
/// @dev The sender is not authorized to perform the action
error PrimarySaleUnauthorized();
/// @dev The recipient is invalid
error PrimarySaleInvalidRecipient(address recipient);
/// @dev The address that receives all primary sales value.
address private recipient;
/// @dev Returns primary sale recipient address.
function primarySaleRecipient() public view override returns (address) {
return recipient;
}
/**
* @notice Updates primary sale recipient.
* @dev Caller should be authorized to set primary sales info.
* See {_canSetPrimarySaleRecipient}.
* Emits {PrimarySaleRecipientUpdated Event}; See {_setupPrimarySaleRecipient}.
*
* @param _saleRecipient Address to be set as new recipient of primary sales.
*/
function setPrimarySaleRecipient(address _saleRecipient) external override {
if (!_canSetPrimarySaleRecipient()) {
revert PrimarySaleUnauthorized();
}
_setupPrimarySaleRecipient(_saleRecipient);
}
/// @dev Lets a contract admin set the recipient for all primary sales.
function _setupPrimarySaleRecipient(address _saleRecipient) internal {
if (_saleRecipient == address(0)) {
revert PrimarySaleInvalidRecipient(_saleRecipient);
}
recipient = _saleRecipient;
emit PrimarySaleRecipientUpdated(_saleRecipient);
}
/// @dev Returns whether primary sale recipient can be set in the given execution context.
function _canSetPrimarySaleRecipient() internal view virtual returns (bool);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "./interface/IRoyalty.sol";
/**
* @title Royalty
* @notice Thirdweb's `Royalty` is a contract extension to be used with any base contract. It exposes functions for setting and reading
* the recipient of royalty fee and the royalty fee basis points, and lets the inheriting contract perform conditional logic
* that uses information about royalty fees, if desired.
*
* @dev The `Royalty` contract is ERC2981 compliant.
*/
abstract contract RoyaltyMigration is IRoyalty {
/// @dev The sender is not authorized to perform the action
error RoyaltyUnauthorized();
/// @dev The recipient is invalid
error RoyaltyInvalidRecipient(address recipient);
/// @dev The fee bps exceeded the max value
error RoyaltyExceededMaxFeeBps(uint256 max, uint256 actual);
/// @dev The (default) address that receives all royalty value.
address internal royaltyRecipient;
/// @dev The (default) % of a sale to take as royalty (in basis points).
uint16 internal royaltyBps;
/// @dev Token ID => royalty recipient and bps for token
mapping(uint256 => RoyaltyInfo) internal royaltyInfoForToken;
/**
* @notice View royalty info for a given token and sale price.
* @dev Returns royalty amount and recipient for `tokenId` and `salePrice`.
* @param tokenId The tokenID of the NFT for which to query royalty info.
* @param salePrice Sale price of the token.
*
* @return receiver Address of royalty recipient account.
* @return royaltyAmount Royalty amount calculated at current royaltyBps value.
*/
function royaltyInfo(
uint256 tokenId,
uint256 salePrice
) external view virtual override returns (address receiver, uint256 royaltyAmount) {
(address recipient, uint256 bps) = getRoyaltyInfoForToken(tokenId);
receiver = recipient;
royaltyAmount = (salePrice * bps) / 10_000;
}
/**
* @notice View royalty info for a given token.
* @dev Returns royalty recipient and bps for `_tokenId`.
* @param _tokenId The tokenID of the NFT for which to query royalty info.
*/
function getRoyaltyInfoForToken(uint256 _tokenId) public view virtual returns (address, uint16);
/**
* @notice Returns the defualt royalty recipient and BPS for this contract's NFTs.
*/
function getDefaultRoyaltyInfo() external view override returns (address, uint16) {
return (royaltyRecipient, uint16(royaltyBps));
}
/**
* @notice Updates default royalty recipient and bps.
* @dev Caller should be authorized to set royalty info.
* See {_canSetRoyaltyInfo}.
* Emits {DefaultRoyalty Event}; See {_setupDefaultRoyaltyInfo}.
*
* @param _royaltyRecipient Address to be set as default royalty recipient.
* @param _royaltyBps Updated royalty bps.
*/
function setDefaultRoyaltyInfo(address _royaltyRecipient, uint256 _royaltyBps) external override {
if (!_canSetRoyaltyInfo()) {
revert RoyaltyUnauthorized();
}
_setupDefaultRoyaltyInfo(_royaltyRecipient, _royaltyBps);
}
/// @dev Lets a contract admin update the default royalty recipient and bps.
function _setupDefaultRoyaltyInfo(address _royaltyRecipient, uint256 _royaltyBps) internal {
if (_royaltyBps > 10_000) {
revert RoyaltyExceededMaxFeeBps(10_000, _royaltyBps);
}
royaltyRecipient = _royaltyRecipient;
royaltyBps = uint16(_royaltyBps);
emit DefaultRoyalty(_royaltyRecipient, _royaltyBps);
}
/**
* @notice Updates default royalty recipient and bps for a particular token.
* @dev Sets royalty info for `_tokenId`. Caller should be authorized to set royalty info.
* See {_canSetRoyaltyInfo}.
* Emits {RoyaltyForToken Event}; See {_setupRoyaltyInfoForToken}.
*
* @param _recipient Address to be set as royalty recipient for given token Id.
* @param _bps Updated royalty bps for the token Id.
*/
function setRoyaltyInfoForToken(uint256 _tokenId, address _recipient, uint256 _bps) external override {
if (!_canSetRoyaltyInfo()) {
revert RoyaltyUnauthorized();
}
_setupRoyaltyInfoForToken(_tokenId, _recipient, _bps);
}
/// @dev Lets a contract admin set the royalty recipient and bps for a particular token Id.
function _setupRoyaltyInfoForToken(uint256 _tokenId, address _recipient, uint256 _bps) internal {
if (_bps > 10_000) {
revert RoyaltyExceededMaxFeeBps(10_000, _bps);
}
royaltyInfoForToken[_tokenId] = RoyaltyInfo({ recipient: _recipient, bps: _bps });
emit RoyaltyForToken(_tokenId, _recipient, _bps);
}
/// @dev Returns whether royalty info can be set in the given execution context.
function _canSetRoyaltyInfo() internal view virtual returns (bool);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
/**
* The interface `IClaimCondition` is written for thirdweb's 'Drop' contracts, which are distribution mechanisms for tokens.
*
* A claim condition defines criteria under which accounts can mint tokens. Claim conditions can be overwritten
* or added to by the contract admin. At any moment, there is only one active claim condition.
*/
interface IClaimCondition {
/**
* @notice The criteria that make up a claim condition.
*
* @param startTimestamp The unix timestamp after which the claim condition applies.
* The same claim condition applies until the `startTimestamp`
* of the next claim condition.
*
* @param maxClaimableSupply The maximum total number of tokens that can be claimed under
* the claim condition.
*
* @param supplyClaimed At any given point, the number of tokens that have been claimed
* under the claim condition.
*
* @param quantityLimitPerWallet The maximum number of tokens that can be claimed by a wallet.
*
* @param merkleRoot The allowlist of addresses that can claim tokens under the claim
* condition.
*
* @param pricePerToken The price required to pay per token claimed.
*
* @param currency The currency in which the `pricePerToken` must be paid.
*
* @param metadata Claim condition metadata.
*/
struct ClaimCondition {
uint256 startTimestamp;
uint256 maxClaimableSupply;
uint256 supplyClaimed;
uint256 quantityLimitPerWallet;
bytes32 merkleRoot;
uint256 pricePerToken;
address currency;
string metadata;
}
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "./IClaimCondition.sol";
/**
* The interface `IClaimConditionMultiPhase` is written for thirdweb's 'Drop' contracts, which are distribution mechanisms for tokens.
*
* An authorized wallet can set a series of claim conditions, ordered by their respective `startTimestamp`.
* A claim condition defines criteria under which accounts can mint tokens. Claim conditions can be overwritten
* or added to by the contract admin. At any moment, there is only one active claim condition.
*/
interface IClaimConditionMultiPhase is IClaimCondition {
/**
* @notice The set of all claim conditions, at any given moment.
* Claim Phase ID = [currentStartId, currentStartId + length - 1];
*
* @param currentStartId The uid for the first claim condition amongst the current set of
* claim conditions. The uid for each next claim condition is one
* more than the previous claim condition's uid.
*
* @param count The total number of phases / claim conditions in the list
* of claim conditions.
*
* @param conditions The claim conditions at a given uid. Claim conditions
* are ordered in an ascending order by their `startTimestamp`.
*
* @param supplyClaimedByWallet Map from a claim condition uid and account to supply claimed by account.
*/
struct ClaimConditionList {
uint256 currentStartId;
uint256 count;
mapping(uint256 => ClaimCondition) conditions;
mapping(uint256 => mapping(address => uint256)) supplyClaimedByWallet;
}
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
/**
* Thirdweb's `ContractMetadata` is a contract extension for any base contracts. It lets you set a metadata URI
* for you contract.
*
* Additionally, `ContractMetadata` is necessary for NFT contracts that want royalties to get distributed on OpenSea.
*/
interface IContractMetadata {
/// @dev Returns the metadata URI of the contract.
function contractURI() external view returns (string memory);
/**
* @dev Sets contract URI for the storefront-level metadata of the contract.
* Only module admin can call this function.
*/
function setContractURI(string calldata _uri) external;
/// @dev Emitted when the contract URI is updated.
event ContractURIUpdated(string prevURI, string newURI);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "./IClaimConditionMultiPhase.sol";
/**
* The interface `IDrop` is written for thirdweb's 'Drop' contracts, which are distribution mechanisms for tokens.
*
* An authorized wallet can set a series of claim conditions, ordered by their respective `startTimestamp`.
* A claim condition defines criteria under which accounts can mint tokens. Claim conditions can be overwritten
* or added to by the contract admin. At any moment, there is only one active claim condition.
*/
interface IDrop is IClaimConditionMultiPhase {
/**
* @param proof Proof of concerned wallet's inclusion in an allowlist.
* @param quantityLimitPerWallet The total quantity of tokens the allowlisted wallet is eligible to claim over time.
* @param pricePerToken The price per token the allowlisted wallet must pay to claim tokens.
* @param currency The currency in which the allowlisted wallet must pay the price for claiming tokens.
*/
struct AllowlistProof {
bytes32[] proof;
uint256 quantityLimitPerWallet;
uint256 pricePerToken;
address currency;
}
/// @notice Emitted when tokens are claimed via `claim`.
event TokensClaimed(
uint256 indexed claimConditionIndex,
address indexed claimer,
address indexed receiver,
uint256 startTokenId,
uint256 quantityClaimed
);
/// @notice Emitted when the contract's claim conditions are updated.
event ClaimConditionsUpdated(ClaimCondition[] claimConditions, bool resetEligibility);
/**
* @notice Lets an account claim a given quantity of NFTs.
*
* @param receiver The receiver of the NFTs to claim.
* @param quantity The quantity of NFTs to claim.
* @param currency The currency in which to pay for the claim.
* @param pricePerToken The price per token to pay for the claim.
* @param allowlistProof The proof of the claimer's inclusion in the merkle root allowlist
* of the claim conditions that apply.
* @param data Arbitrary bytes data that can be leveraged in the implementation of this interface.
*/
function claim(
address receiver,
uint256 quantity,
address currency,
uint256 pricePerToken,
AllowlistProof calldata allowlistProof,
bytes memory data
) external payable;
/**
* @notice Lets a contract admin (account with `DEFAULT_ADMIN_ROLE`) set claim conditions.
*
* @param phases Claim conditions in ascending order by `startTimestamp`.
*
* @param resetClaimEligibility Whether to honor the restrictions applied to wallets who have claimed tokens in the current conditions,
* in the new claim conditions being set.
*
*/
function setClaimConditions(ClaimCondition[] calldata phases, bool resetClaimEligibility) external;
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
/**
* Thirdweb's `LazyMint` is a contract extension for any base NFT contract. It lets you 'lazy mint' any number of NFTs
* at once. Here, 'lazy mint' means defining the metadata for particular tokenIds of your NFT contract, without actually
* minting a non-zero balance of NFTs of those tokenIds.
*/
interface ILazyMint {
/// @dev Emitted when tokens are lazy minted.
event TokensLazyMinted(uint256 indexed startTokenId, uint256 endTokenId, string baseURI, bytes encryptedBaseURI);
/**
* @notice Lazy mints a given amount of NFTs.
*
* @param amount The number of NFTs to lazy mint.
*
* @param baseURIForTokens The base URI for the 'n' number of NFTs being lazy minted, where the metadata for each
* of those NFTs is `${baseURIForTokens}/${tokenId}`.
*
* @param extraData Additional bytes data to be used at the discretion of the consumer of the contract.
*
* @return batchId A unique integer identifier for the batch of NFTs lazy minted together.
*/
function lazyMint(
uint256 amount,
string calldata baseURIForTokens,
bytes calldata extraData
) external returns (uint256 batchId);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
/**
* Thirdweb's `Ownable` is a contract extension to be used with any base contract. It exposes functions for setting and reading
* who the 'owner' of the inheriting smart contract is, and lets the inheriting contract perform conditional logic that uses
* information about who the contract's owner is.
*/
interface IOwnable {
/// @dev Returns the owner of the contract.
function owner() external view returns (address);
/// @dev Lets a module admin set a new owner for the contract. The new owner must be a module admin.
function setOwner(address _newOwner) external;
/// @dev Emitted when a new Owner is set.
event OwnerUpdated(address indexed prevOwner, address indexed newOwner);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
/**
* @dev External interface of AccessControl declared to support ERC165 detection.
*/
interface IPermissions {
/**
* @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
*
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
* {RoleAdminChanged} not being emitted signaling this.
*
* _Available since v3.1._
*/
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {AccessControl-_setupRole}.
*/
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) external view returns (bool);
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {AccessControl-_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) external view returns (bytes32);
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function grantRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function revokeRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) external;
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "./IPermissions.sol";
/**
* @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
*/
interface IPermissionsEnumerable is IPermissions {
/**
* @dev Returns one of the accounts that have `role`. `index` must be a
* value between 0 and {getRoleMemberCount}, non-inclusive.
*
* Role bearers are not sorted in any particular way, and their ordering may
* change at any point.
*
* WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
* you perform all queries on the same block. See the following
* [forum post](https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296)
* for more information.
*/
function getRoleMember(bytes32 role, uint256 index) external view returns (address);
/**
* @dev Returns the number of accounts that have `role`. Can be used
* together with {getRoleMember} to enumerate all bearers of a role.
*/
function getRoleMemberCount(bytes32 role) external view returns (uint256);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
/**
* Thirdweb's `PlatformFee` is a contract extension to be used with any base contract. It exposes functions for setting and reading
* the recipient of platform fee and the platform fee basis points, and lets the inheriting contract perform conditional logic
* that uses information about platform fees, if desired.
*/
interface IPlatformFee {
/// @dev Fee type variants: percentage fee and flat fee
enum PlatformFeeType {
Bps,
Flat
}
/// @dev Returns the platform fee bps and recipient.
function getPlatformFeeInfo() external view returns (address, uint16);
/// @dev Lets a module admin update the fees on primary sales.
function setPlatformFeeInfo(address _platformFeeRecipient, uint256 _platformFeeBps) external;
/// @dev Emitted when fee on primary sales is updated.
event PlatformFeeInfoUpdated(address indexed platformFeeRecipient, uint256 platformFeeBps);
/// @dev Emitted when the flat platform fee is updated.
event FlatPlatformFeeUpdated(address platformFeeRecipient, uint256 flatFee);
/// @dev Emitted when the platform fee type is updated.
event PlatformFeeTypeUpdated(PlatformFeeType feeType);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
/**
* Thirdweb's `Primary` is a contract extension to be used with any base contract. It exposes functions for setting and reading
* the recipient of primary sales, and lets the inheriting contract perform conditional logic that uses information about
* primary sales, if desired.
*/
interface IPrimarySale {
/// @dev The adress that receives all primary sales value.
function primarySaleRecipient() external view returns (address);
/// @dev Lets a module admin set the default recipient of all primary sales.
function setPrimarySaleRecipient(address _saleRecipient) external;
/// @dev Emitted when a new sale recipient is set.
event PrimarySaleRecipientUpdated(address indexed recipient);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
import "../../eip/interface/IERC2981.sol";
/**
* Thirdweb's `Royalty` is a contract extension to be used with any base contract. It exposes functions for setting and reading
* the recipient of royalty fee and the royalty fee basis points, and lets the inheriting contract perform conditional logic
* that uses information about royalty fees, if desired.
*
* The `Royalty` contract is ERC2981 compliant.
*/
interface IRoyalty is IERC2981 {
struct RoyaltyInfo {
address recipient;
uint256 bps;
}
/// @dev Returns the royalty recipient and fee bps.
function getDefaultRoyaltyInfo() external view returns (address, uint16);
/// @dev Lets a module admin update the royalty bps and recipient.
function setDefaultRoyaltyInfo(address _royaltyRecipient, uint256 _royaltyBps) external;
/// @dev Lets a module admin set the royalty recipient for a particular token Id.
function setRoyaltyInfoForToken(uint256 tokenId, address recipient, uint256 bps) external;
/// @dev Returns the royalty recipient for a particular token Id.
function getRoyaltyInfoForToken(uint256 tokenId) external view returns (address, uint16);
/// @dev Emitted when royalty info is updated.
event DefaultRoyalty(address indexed newRoyaltyRecipient, uint256 newRoyaltyBps);
/// @dev Emitted when royalty recipient for tokenId is set
event RoyaltyForToken(uint256 indexed tokenId, address indexed royaltyRecipient, uint256 royaltyBps);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../../../../../eip/interface/IERC20.sol";
import { Address } from "@openzeppelin/contracts/utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
interface IWETH {
function deposit() external payable;
function withdraw(uint256 amount) external;
function transfer(address to, uint256 value) external returns (bool);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
// Helper interfaces
import { IWETH } from "../infra/interface/IWETH.sol";
import { SafeERC20, IERC20 } from "../external-deps/openzeppelin/token/ERC20/utils/SafeERC20.sol";
library CurrencyTransferLib {
using SafeERC20 for IERC20;
error CurrencyTransferLibMismatchedValue(uint256 expected, uint256 actual);
error CurrencyTransferLibFailedNativeTransfer(address recipient, uint256 value);
/// @dev The address interpreted as native token of the chain.
address public constant NATIVE_TOKEN = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
/// @dev Transfers a given amount of currency.
function transferCurrency(address _currency, address _from, address _to, uint256 _amount) internal {
if (_amount == 0) {
return;
}
if (_currency == NATIVE_TOKEN) {
safeTransferNativeToken(_to, _amount);
} else {
safeTransferERC20(_currency, _from, _to, _amount);
}
}
/// @dev Transfers a given amount of currency. (With native token wrapping)
function transferCurrencyWithWrapper(
address _currency,
address _from,
address _to,
uint256 _amount,
address _nativeTokenWrapper
) internal {
if (_amount == 0) {
return;
}
if (_currency == NATIVE_TOKEN) {
if (_from == address(this)) {
// withdraw from weth then transfer withdrawn native token to recipient
IWETH(_nativeTokenWrapper).withdraw(_amount);
safeTransferNativeTokenWithWrapper(_to, _amount, _nativeTokenWrapper);
} else if (_to == address(this)) {
// store native currency in weth
if (_amount != msg.value) {
revert CurrencyTransferLibMismatchedValue(msg.value, _amount);
}
IWETH(_nativeTokenWrapper).deposit{ value: _amount }();
} else {
safeTransferNativeTokenWithWrapper(_to, _amount, _nativeTokenWrapper);
}
} else {
safeTransferERC20(_currency, _from, _to, _amount);
}
}
/// @dev Transfer `amount` of ERC20 token from `from` to `to`.
function safeTransferERC20(address _currency, address _from, address _to, uint256 _amount) internal {
if (_from == _to) {
return;
}
if (_from == address(this)) {
IERC20(_currency).safeTransfer(_to, _amount);
} else {
IERC20(_currency).safeTransferFrom(_from, _to, _amount);
}
}
/// @dev Transfers `amount` of native token to `to`.
function safeTransferNativeToken(address to, uint256 value) internal {
// solhint-disable avoid-low-level-calls
// slither-disable-next-line low-level-calls
(bool success, ) = to.call{ value: value }("");
if (!success) {
revert CurrencyTransferLibFailedNativeTransfer(to, value);
}
}
/// @dev Transfers `amount` of native token to `to`. (With native token wrapping)
function safeTransferNativeTokenWithWrapper(address to, uint256 value, address _nativeTokenWrapper) internal {
// solhint-disable avoid-low-level-calls
// slither-disable-next-line low-level-calls
(bool success, ) = to.call{ value: value }("");
if (!success) {
IWETH(_nativeTokenWrapper).deposit{ value: value }();
IERC20(_nativeTokenWrapper).safeTransfer(to, value);
}
}
}
// SPDX-License-Identifier: Apache 2.0
pragma solidity ^0.8.0;
/// @author OpenZeppelin, thirdweb
library MerkleProof {
function verify(bytes32[] calldata proof, bytes32 root, bytes32 leaf) internal pure returns (bool, uint256) {
bytes32 computedHash = leaf;
uint256 index = 0;
for (uint256 i = 0; i < proof.length; i++) {
index *= 2;
bytes32 proofElement = proof[i];
if (computedHash <= proofElement) {
// Hash(current computed hash + current element of the proof)
computedHash = _efficientHash(computedHash, proofElement);
} else {
// Hash(current element of the proof + current computed hash)
computedHash = _efficientHash(proofElement, computedHash);
index += 1;
}
}
// Check if the computed hash (root) is equal to the provided root
return (computedHash == root, index);
}
/**
* @dev Implementation of keccak256(abi.encode(a, b)) that doesn't allocate or expand memory.
*/
function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
/// @solidity memory-safe-assembly
assembly {
mstore(0x00, a)
mstore(0x20, b)
value := keccak256(0x00, 0x40)
}
}
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
/// @author thirdweb
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is prefixed with "0x", encoded using 2 hexadecimal digits per byte,
/// and the alphabets are capitalized conditionally according to
/// https://eips.ethereum.org/EIPS/eip-55
function toHexStringChecksummed(address value) internal pure returns (string memory str) {
str = toHexString(value);
/// @solidity memory-safe-assembly
assembly {
let mask := shl(6, div(not(0), 255)) // `0b010000000100000000 ...`
let o := add(str, 0x22)
let hashed := and(keccak256(o, 40), mul(34, mask)) // `0b10001000 ... `
let t := shl(240, 136) // `0b10001000 << 240`
for {
let i := 0
} 1 {
} {
mstore(add(i, i), mul(t, byte(i, hashed)))
i := add(i, 1)
if eq(i, 20) {
break
}
}
mstore(o, xor(mload(o), shr(1, and(mload(0x00), and(mload(o), mask)))))
o := add(o, 0x20)
mstore(o, xor(mload(o), shr(1, and(mload(0x20), and(mload(o), mask)))))
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is prefixed with "0x" and encoded using 2 hexadecimal digits per byte.
function toHexString(address value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
/// @solidity memory-safe-assembly
assembly {
let strLength := add(mload(str), 2) // Compute the length.
mstore(str, 0x3078) // Write the "0x" prefix.
str := sub(str, 2) // Move the pointer.
mstore(str, strLength) // Write the length.
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is encoded using 2 hexadecimal digits per byte.
function toHexStringNoPrefix(address value) internal pure returns (string memory str) {
/// @solidity memory-safe-assembly
assembly {
str := mload(0x40)
// Allocate the memory.
// We need 0x20 bytes for the trailing zeros padding, 0x20 bytes for the length,
// 0x02 bytes for the prefix, and 0x28 bytes for the digits.
// The next multiple of 0x20 above (0x20 + 0x20 + 0x02 + 0x28) is 0x80.
mstore(0x40, add(str, 0x80))
// Store "0123456789abcdef" in scratch space.
mstore(0x0f, 0x30313233343536373839616263646566)
str := add(str, 2)
mstore(str, 40)
let o := add(str, 0x20)
mstore(add(o, 40), 0)
value := shl(96, value)
// We write the string from rightmost digit to leftmost digit.
// The following is essentially a do-while loop that also handles the zero case.
for {
let i := 0
} 1 {
} {
let p := add(o, add(i, i))
let temp := byte(i, value)
mstore8(add(p, 1), mload(and(temp, 15)))
mstore8(p, mload(shr(4, temp)))
i := add(i, 1)
if eq(i, 20) {
break
}
}
}
}
/// @dev Returns the hex encoded string from the raw bytes.
/// The output is encoded using 2 hexadecimal digits per byte.
function toHexString(bytes memory raw) internal pure returns (string memory str) {
str = toHexStringNoPrefix(raw);
/// @solidity memory-safe-assembly
assembly {
let strLength := add(mload(str), 2) // Compute the length.
mstore(str, 0x3078) // Write the "0x" prefix.
str := sub(str, 2) // Move the pointer.
mstore(str, strLength) // Write the length.
}
}
/// @dev Returns the hex encoded string from the raw bytes.
/// The output is encoded using 2 hexadecimal digits per byte.
function toHexStringNoPrefix(bytes memory raw) internal pure returns (string memory str) {
/// @solidity memory-safe-assembly
assembly {
let length := mload(raw)
str := add(mload(0x40), 2) // Skip 2 bytes for the optional prefix.
mstore(str, add(length, length)) // Store the length of the output.
// Store "0123456789abcdef" in scratch space.
mstore(0x0f, 0x30313233343536373839616263646566)
let o := add(str, 0x20)
let end := add(raw, length)
for {
} iszero(eq(raw, end)) {
} {
raw := add(raw, 1)
mstore8(add(o, 1), mload(and(mload(raw), 15)))
mstore8(o, mload(and(shr(4, mload(raw)), 15)))
o := add(o, 2)
}
mstore(o, 0) // Zeroize the slot after the string.
mstore(0x40, add(o, 0x20)) // Allocate the memory.
}
}
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.11;
import "../lib/MerkleProof.sol";
import "../eip/interface/IERC721.sol";
interface INextId {
function nextTokenIdToMint() external view returns (uint256);
}
abstract contract TokenMigrateERC721 {
/// @dev The sender is not authorized to perform the action
error TokenMigrateUnauthorized();
/// @dev Token is not eligible for migration
error TokenMigrateInvalidTokenId(uint256 tokenId);
/// @dev Invalid proofs to claim the token ownership for id
error TokenMigrateInvalidProof(address tokenOwner, uint256 tokenId);
/// @dev Token is already migrated
error TokenMigrateAlreadyMigrated(uint256 tokenId);
/*///////////////////////////////////////////////////////////////
State Variables
//////////////////////////////////////////////////////////////*/
/// @notice The merkle root contianing token ownership information.
bytes32 private ownershipMerkleRoot;
/// @notice The address of the original token contract.
address internal _originalContract;
/// @notice A bit map of token IDs
mapping(uint256 => bool) private _ownershipClaimed;
/*///////////////////////////////////////////////////////////////
External/Public Functions
//////////////////////////////////////////////////////////////*/
/// @notice Migrates a token via proving inclusion in the merkle root.
/// @dev Assumption: tokens on the original contract are non-transferrable.
function migrate(address _tokenOwner, uint256 _tokenId, bytes32[] calldata _proof) external {
// Check if the token ownership has already been claimed
if (_ownershipClaimed[_tokenId]) {
revert TokenMigrateAlreadyMigrated(_tokenId);
}
// if tokenId doesn't exist in the original contract, then revert
// original contract is already frozen, no more new token will be minted after this migration has been setup
if (_tokenId >= INextId(_originalContract).nextTokenIdToMint()) {
revert TokenMigrateInvalidTokenId(_tokenId);
}
if (_requireVerification()) {
// Verify that the proof is valid
bool isValidProof;
(isValidProof, ) = MerkleProof.verify(
_proof,
_merkleRoot(),
keccak256(abi.encodePacked(_tokenId, _tokenOwner))
);
if (!isValidProof) {
revert TokenMigrateInvalidProof(_tokenOwner, _tokenId);
}
}
// Mark token ownership as claimed
_ownershipClaimed[_tokenId] = true;
// Mint token to token owner
_mintMigratedTokens(_tokenOwner, _tokenId);
}
/// @notice Sets the merkle root containing token ownership information.
function setMerkleRoot(bytes32 _merkleRoot) external virtual {
if (!_canSetMerkleRoot()) {
revert TokenMigrateUnauthorized();
}
_setupMerkleRoot(_merkleRoot);
}
/*///////////////////////////////////////////////////////////////
Internal Functions
//////////////////////////////////////////////////////////////*/
/// @notice Returns the merkle root containing token ownership information.
function _merkleRoot() internal view virtual returns (bytes32) {
return ownershipMerkleRoot;
}
/// @notice Sets up the original token contract address.
function _setupOriginalContract(address __originalContract) internal virtual {
_originalContract = __originalContract;
}
/// @notice Sets up the merkle root containing token ownership information.
function _setupMerkleRoot(bytes32 _merkleRoot) internal virtual {
ownershipMerkleRoot = _merkleRoot;
}
function isOwnershipClaimed(uint256 _tokenId) internal view returns (bool) {
return _ownershipClaimed[_tokenId];
}
/*///////////////////////////////////////////////////////////////
Unimplemented Functions
//////////////////////////////////////////////////////////////*/
/// @notice Mints migrated token to token owner.
function _mintMigratedTokens(address _tokenOwner, uint256 _tokenId) internal virtual;
/// @notice Returns whether merkle root can be set in the given execution context.
function _canSetMerkleRoot() internal virtual returns (bool);
/// @notice Returns whether the caller address needs to be verified.
function _requireVerification() internal virtual returns (bool);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.11;
/// @author thirdweb
// $$\ $$\ $$\ $$\ $$\
// $$ | $$ | \__| $$ | $$ |
// $$$$$$\ $$$$$$$\ $$\ $$$$$$\ $$$$$$$ |$$\ $$\ $$\ $$$$$$\ $$$$$$$\
// \_$$ _| $$ __$$\ $$ |$$ __$$\ $$ __$$ |$$ | $$ | $$ |$$ __$$\ $$ __$$\
// $$ | $$ | $$ |$$ |$$ | \__|$$ / $$ |$$ | $$ | $$ |$$$$$$$$ |$$ | $$ |
// $$ |$$\ $$ | $$ |$$ |$$ | $$ | $$ |$$ | $$ | $$ |$$ ____|$$ | $$ |
// \$$$$ |$$ | $$ |$$ |$$ | \$$$$$$$ |\$$$$$\$$$$ |\$$$$$$$\ $$$$$$$ |
// \____/ \__| \__|\__|\__| \_______| \_____\____/ \_______|\_______/
// ========== External imports ==========
import "@openzeppelin/contracts/utils/Multicall.sol";
import "@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/interfaces/IERC2981Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/ERC721EnumerableUpgradeable.sol";
// ========== Internal imports ==========
import "../../lib/CurrencyTransferLib.sol";
// ========== Features ==========
import "../../extension/ContractMetadata.sol";
import "../../extension/PlatformFee.sol";
import "../../extension/RoyaltyMigration.sol";
import "../../extension/PrimarySale.sol";
import "../../extension/Ownable.sol";
import "../../extension/LazyMint.sol";
import "../../extension/PermissionsEnumerable.sol";
import "../../extension/Drop.sol";
import "../TokenMigrateERC721.sol";
contract DropERC721M is
Initializable,
ContractMetadata,
PlatformFee,
RoyaltyMigration,
PrimarySale,
Ownable,
LazyMint,
PermissionsEnumerable,
Drop,
Multicall,
ERC721EnumerableUpgradeable,
TokenMigrateERC721
{
using StringsUpgradeable for uint256;
/// @dev Unable to transfer the token due to missing role
error DropTransferRestricted(address from, address to);
/// @dev Invalid msg.value
error DropInvalidMsgValue(uint256 expected, uint256 actual);
/// @dev token owner or approved
error DropNotApprovedOrOwner(address sender, uint256 tokenId);
/// @dev failed to lazy mint with delay reveal
error DropDelayRevealUnsupported();
/*///////////////////////////////////////////////////////////////
State variables
//////////////////////////////////////////////////////////////*/
/// @dev Only transfers to or from TRANSFER_ROLE holders are valid, when transfers are restricted.
bytes32 private constant TRANSFER_ROLE = keccak256("TRANSFER_ROLE");
/// @dev Only MINTER_ROLE holders can sign off on `MintRequest`s and lazy mint tokens.
bytes32 private constant MINTER_ROLE = keccak256("MINTER_ROLE");
/// @dev Only METADATA_ROLE holders can reveal the URI to update or freeze batch metadata.
bytes32 private constant METADATA_ROLE = keccak256("METADATA_ROLE");
/// @dev Only MIGRATION_ROLE holders for setting migration merkle root
bytes32 private constant MIGRATION_ROLE = keccak256("MIGRATION_ROLE");
/// @dev Max bps in the thirdweb system.
uint256 private constant MAX_BPS = 10_000;
/// @dev Global max total supply of NFTs.
uint256 public maxTotalSupply;
/// @dev Next tokenId to be claimed.
uint256 public nextTokenIdToClaim;
/// @dev Next tokenId that was to be claimed on original contract.
uint256 private migratedNextTokenId;
/// @dev Emitted when the global max supply of tokens is updated.
event MaxTotalSupplyUpdated(uint256 maxTotalSupply);
/*///////////////////////////////////////////////////////////////
Constructor + initializer logic
//////////////////////////////////////////////////////////////*/
constructor() initializer {}
/// @dev Initializes the contract, like a constructor.
function initialize(
address _defaultAdmin,
address __originalContract,
bytes32 _ownershipMerkleRoot,
string memory _contractURI
) external initializer {
// Initialize inherited contracts, most base-like -> most derived.
__ERC721_init(DropERC721M(__originalContract).name(), DropERC721M(__originalContract).symbol());
{
_setupOriginalContract(__originalContract);
_setupMerkleRoot(_ownershipMerkleRoot);
uint256 _nextIdToClaim = DropERC721M(_originalContract).nextTokenIdToClaim();
uint256 _nextIdToMint = DropERC721M(_originalContract).nextTokenIdToMint();
nextTokenIdToClaim = _nextIdToClaim;
nextTokenIdToLazyMint = _nextIdToMint;
migratedNextTokenId = _nextIdToMint;
(address royaltyRecipient, uint16 royaltyBps) = DropERC721M(__originalContract).getDefaultRoyaltyInfo();
(address platformFeeRecipient, uint256 platformFeeBps) = DropERC721M(__originalContract)
.getPlatformFeeInfo();
address primarySaleRecipient = DropERC721M(__originalContract).primarySaleRecipient();
if (platformFeeRecipient != address(0)) {
_setupPlatformFeeInfo(platformFeeRecipient, platformFeeBps);
}
if (royaltyRecipient != address(0)) {
_setupDefaultRoyaltyInfo(royaltyRecipient, royaltyBps);
}
if (primarySaleRecipient != address(0)) {
_setupPrimarySaleRecipient(primarySaleRecipient);
}
}
try DropERC721M(__originalContract).maxTotalSupply() returns (uint256 _maxTotalSupply) {
maxTotalSupply = _maxTotalSupply;
} catch {}
_setupContractURI(_contractURI);
_setupOwner(_defaultAdmin);
_setupRole(DEFAULT_ADMIN_ROLE, _defaultAdmin);
_setupRole(MINTER_ROLE, _defaultAdmin);
_setupRole(TRANSFER_ROLE, address(0));
_setupRole(METADATA_ROLE, _defaultAdmin);
_setRoleAdmin(METADATA_ROLE, METADATA_ROLE);
_setupRole(MIGRATION_ROLE, _defaultAdmin);
_setRoleAdmin(MIGRATION_ROLE, MIGRATION_ROLE);
}
/*///////////////////////////////////////////////////////////////
ERC 165 / 721 / 2981 logic
//////////////////////////////////////////////////////////////*/
/// @dev Returns the URI for a given tokenId.
function tokenURI(uint256 _tokenId) public view override returns (string memory) {
if (_tokenId < migratedNextTokenId) {
return DropERC721M(_originalContract).tokenURI(_tokenId);
}
string memory batchUri = _getBaseURI(_tokenId);
return string(abi.encodePacked(batchUri, _tokenId.toString()));
}
/*///////////////////////////////////////////////////////////////
Migration logic
//////////////////////////////////////////////////////////////*/
function _mintMigratedTokens(address _to, uint256 _tokenId) internal virtual override {
_safeMint(_to, _tokenId);
}
/*///////////////////////////////////////////////////////////////
ERC165
//////////////////////////////////////////////////////////////*/
/// @dev See ERC 165
function supportsInterface(
bytes4 interfaceId
) public view virtual override(ERC721EnumerableUpgradeable, IERC165) returns (bool) {
return super.supportsInterface(interfaceId) || type(IERC2981Upgradeable).interfaceId == interfaceId;
}
/*///////////////////////////////////////////////////////////////
Contract identifiers
//////////////////////////////////////////////////////////////*/
function contractType() external pure returns (bytes32) {
return bytes32("DropERC721M");
}
function contractVersion() external pure returns (uint8) {
return uint8(4);
}
/*///////////////////////////////////////////////////////////////
Lazy minting
//////////////////////////////////////////////////////////////*/
/**
* @dev Lets an account with `MINTER_ROLE` lazy mint 'n' NFTs.
* The URIs for each token is the provided `_baseURIForTokens` + `{tokenId}`.
*/
function lazyMint(
uint256 _amount,
string calldata _baseURIForTokens,
bytes calldata _data
) public override returns (uint256 batchId) {
if (_data.length > 0) {
revert DropDelayRevealUnsupported();
}
return super.lazyMint(_amount, _baseURIForTokens, _data);
}
/**
* @notice View royalty info for a given token.
* @dev Returns royalty recipient and bps for `_tokenId`.
* @param _tokenId The tokenID of the NFT for which to query royalty info.
*/
function getRoyaltyInfoForToken(uint256 _tokenId) public view override returns (address, uint16) {
RoyaltyInfo memory royaltyForToken = royaltyInfoForToken[_tokenId];
// if it's a migrated token and royalty has not been overriden yet
if (_tokenId < migratedNextTokenId && royaltyForToken.recipient == address(0) && royaltyForToken.bps == 0) {
return IRoyalty(_originalContract).getRoyaltyInfoForToken(_tokenId);
}
return
royaltyForToken.recipient == address(0)
? (royaltyRecipient, uint16(royaltyBps))
: (royaltyForToken.recipient, uint16(royaltyForToken.bps));
}
/**
* @notice Updates the base URI for a batch of tokens.
*
* @param _index Index of the desired batch in batchIds array
* @param _uri the new base URI for the batch.
*/
function updateBatchBaseURI(uint256 _index, string calldata _uri) external onlyRole(METADATA_ROLE) {
uint256 batchId = getBatchIdAtIndex(_index);
_setBaseURI(batchId, _uri);
}
/**
* @notice Freezes the base URI for a batch of tokens.
*
* @param _index Index of the desired batch in batchIds array.
*/
function freezeBatchBaseURI(uint256 _index) external onlyRole(METADATA_ROLE) {
uint256 batchId = getBatchIdAtIndex(_index);
_freezeBaseURI(batchId);
}
/*///////////////////////////////////////////////////////////////
Setter functions
//////////////////////////////////////////////////////////////*/
/// @dev Lets a contract admin set the global maximum supply for collection's NFTs.
function setMaxTotalSupply(uint256 _maxTotalSupply) external onlyRole(DEFAULT_ADMIN_ROLE) {
maxTotalSupply = _maxTotalSupply;
emit MaxTotalSupplyUpdated(_maxTotalSupply);
}
/*///////////////////////////////////////////////////////////////
Internal functions
//////////////////////////////////////////////////////////////*/
/// @dev Runs before every `claim` function call.
function _beforeClaim(
address,
uint256 _quantity,
address,
uint256,
AllowlistProof calldata,
bytes memory
) internal view override {
if (nextTokenIdToClaim + _quantity > nextTokenIdToLazyMint) {
revert DropExceedMaxSupply();
}
if (maxTotalSupply != 0 && nextTokenIdToClaim + _quantity > maxTotalSupply) {
revert DropExceedMaxSupply();
}
}
/// @dev Collects and distributes the primary sale value of NFTs being claimed.
function _collectPriceOnClaim(
address _primarySaleRecipient,
uint256 _quantityToClaim,
address _currency,
uint256 _pricePerToken
) internal override {
if (_pricePerToken == 0) {
if (msg.value != 0) {
revert DropInvalidMsgValue(0, msg.value);
}
return;
}
(address platformFeeRecipient, uint16 platformFeeBps) = getPlatformFeeInfo();
address saleRecipient = _primarySaleRecipient == address(0) ? primarySaleRecipient() : _primarySaleRecipient;
uint256 totalPrice = _quantityToClaim * _pricePerToken;
uint256 platformFees = (totalPrice * platformFeeBps) / MAX_BPS;
if (_currency == CurrencyTransferLib.NATIVE_TOKEN) {
if (msg.value != totalPrice) {
revert DropInvalidMsgValue(totalPrice, msg.value);
}
} else {
if (msg.value != 0) {
revert DropInvalidMsgValue(0, msg.value);
}
}
CurrencyTransferLib.transferCurrency(_currency, msg.sender, platformFeeRecipient, platformFees);
CurrencyTransferLib.transferCurrency(_currency, msg.sender, saleRecipient, totalPrice - platformFees);
}
/// @dev Transfers the NFTs being claimed.
function _transferTokensOnClaim(
address _to,
uint256 _quantityBeingClaimed
) internal override returns (uint256 tokenIdToClaim) {
tokenIdToClaim = nextTokenIdToClaim;
for (uint256 i = 0; i < _quantityBeingClaimed; i += 1) {
_safeMint(_to, tokenIdToClaim);
tokenIdToClaim += 1;
}
nextTokenIdToClaim = tokenIdToClaim;
}
/// @dev Checks whether platform fee info can be set in the given execution context.
function _canSetPlatformFeeInfo() internal view override returns (bool) {
return hasRole(DEFAULT_ADMIN_ROLE, msg.sender);
}
/// @dev Checks whether primary sale recipient can be set in the given execution context.
function _canSetPrimarySaleRecipient() internal view override returns (bool) {
return hasRole(DEFAULT_ADMIN_ROLE, msg.sender);
}
/// @dev Checks whether owner can be set in the given execution context.
function _canSetOwner() internal view override returns (bool) {
return hasRole(DEFAULT_ADMIN_ROLE, msg.sender);
}
/// @dev Checks whether royalty info can be set in the given execution context.
function _canSetRoyaltyInfo() internal view override returns (bool) {
return hasRole(DEFAULT_ADMIN_ROLE, msg.sender);
}
/// @dev Checks whether contract metadata can be set in the given execution context.
function _canSetContractURI() internal view override returns (bool) {
return hasRole(DEFAULT_ADMIN_ROLE, msg.sender);
}
/// @dev Checks whether platform fee info can be set in the given execution context.
function _canSetClaimConditions() internal view override returns (bool) {
return hasRole(DEFAULT_ADMIN_ROLE, msg.sender);
}
/// @dev Returns whether lazy minting can be done in the given execution context.
function _canLazyMint() internal view virtual override returns (bool) {
return hasRole(MINTER_ROLE, msg.sender);
}
/// @notice Returns whether merkle root can be set in the given execution context.
function _canSetMerkleRoot() internal virtual override returns (bool) {
return hasRole(MIGRATION_ROLE, msg.sender);
}
/// @notice Returns whether the caller address needs to be verified.
function _requireVerification() internal view virtual override returns (bool) {
return !hasRole(MIGRATION_ROLE, msg.sender);
}
/*///////////////////////////////////////////////////////////////
Miscellaneous
//////////////////////////////////////////////////////////////*/
/**
* Returns the total amount of tokens minted in the contract.
*/
function totalMinted() external view returns (uint256) {
return nextTokenIdToClaim;
}
/// @dev The tokenId of the next NFT that will be minted / lazy minted.
function nextTokenIdToMint() external view returns (uint256) {
return nextTokenIdToLazyMint;
}
/// @dev Burns `tokenId`. See {ERC721-_burn}.
function burn(uint256 tokenId) public virtual {
//solhint-disable-next-line max-line-length
if (!_isApprovedOrOwner(msg.sender, tokenId)) {
revert DropNotApprovedOrOwner(msg.sender, tokenId);
}
_burn(tokenId);
}
/// @dev See {ERC721-_beforeTokenTransfer}.
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId,
uint256 batchSize
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId, batchSize);
// if transfer is restricted on the contract, we still want to allow burning and minting
if (!hasRole(TRANSFER_ROLE, address(0)) && from != address(0) && to != address(0)) {
if (!hasRole(TRANSFER_ROLE, from) && !hasRole(TRANSFER_ROLE, to)) {
revert DropTransferRestricted(from, to);
}
}
}
function _dropMsgSender() internal view virtual override returns (address) {
return msg.sender;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC2981.sol)
pragma solidity ^0.8.0;
import "../utils/introspection/IERC165Upgradeable.sol";
/**
* @dev Interface for the NFT Royalty Standard.
*
* A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
* support for royalty payments across all NFT marketplaces and ecosystem participants.
*
* _Available since v4.5._
*/
interface IERC2981Upgradeable is IERC165Upgradeable {
/**
* @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
* exchange. The royalty amount is denominated and should be paid in that same unit of exchange.
*/
function royaltyInfo(
uint256 tokenId,
uint256 salePrice
) external view returns (address receiver, uint256 royaltyAmount);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/AddressUpgradeable.sol";
/**
* @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 Indicates that the contract has been initialized.
* @custom:oz-retyped-from bool
*/
uint8 private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint8 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 functions marked with `initializer` can be nested in the context of a
* constructor.
*
* Emits an {Initialized} event.
*/
modifier initializer() {
bool isTopLevelCall = !_initializing;
require(
(isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
"Initializable: contract is already initialized"
);
_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 255 will prevent any future reinitialization.
*
* Emits an {Initialized} event.
*/
modifier reinitializer(uint8 version) {
require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
_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() {
require(_initializing, "Initializable: contract is not initializing");
_;
}
/**
* @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 {
require(!_initializing, "Initializable: contract is initializing");
if (_initialized != type(uint8).max) {
_initialized = type(uint8).max;
emit Initialized(type(uint8).max);
}
}
/**
* @dev Returns the highest version that has been initialized. See {reinitializer}.
*/
function _getInitializedVersion() internal view returns (uint8) {
return _initialized;
}
/**
* @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
*/
function _isInitializing() internal view returns (bool) {
return _initializing;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.0;
import "./IERC721Upgradeable.sol";
import "./IERC721ReceiverUpgradeable.sol";
import "./extensions/IERC721MetadataUpgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../utils/StringsUpgradeable.sol";
import "../../utils/introspection/ERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable {
using AddressUpgradeable for address;
using StringsUpgradeable for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
function __ERC721_init(string memory name_, string memory symbol_) internal onlyInitializing {
__ERC721_init_unchained(name_, symbol_);
}
function __ERC721_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) {
return
interfaceId == type(IERC721Upgradeable).interfaceId ||
interfaceId == type(IERC721MetadataUpgradeable).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: address zero is not a valid owner");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _ownerOf(tokenId);
require(owner != address(0), "ERC721: invalid token ID");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
_requireMinted(tokenId);
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be 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 override {
address owner = ERC721Upgradeable.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not token owner or approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
_requireMinted(tokenId);
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(address from, address to, uint256 tokenId) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
_safeTransfer(from, to, tokenId, data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
*/
function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
return _owners[tokenId];
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _ownerOf(tokenId) != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
address owner = ERC721Upgradeable.ownerOf(tokenId);
return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId, 1);
// Check that tokenId was not minted by `_beforeTokenTransfer` hook
require(!_exists(tokenId), "ERC721: token already minted");
unchecked {
// Will not overflow unless all 2**256 token ids are minted to the same owner.
// Given that tokens are minted one by one, it is impossible in practice that
// this ever happens. Might change if we allow batch minting.
// The ERC fails to describe this case.
_balances[to] += 1;
}
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
_afterTokenTransfer(address(0), to, tokenId, 1);
}
/**
* @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 virtual {
address owner = ERC721Upgradeable.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId, 1);
// Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook
owner = ERC721Upgradeable.ownerOf(tokenId);
// Clear approvals
delete _tokenApprovals[tokenId];
unchecked {
// Cannot overflow, as that would require more tokens to be burned/transferred
// out than the owner initially received through minting and transferring in.
_balances[owner] -= 1;
}
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
_afterTokenTransfer(owner, address(0), tokenId, 1);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(address from, address to, uint256 tokenId) internal virtual {
require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId, 1);
// Check that tokenId was not transferred by `_beforeTokenTransfer` hook
require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
// Clear approvals from the previous owner
delete _tokenApprovals[tokenId];
unchecked {
// `_balances[from]` cannot overflow for the same reason as described in `_burn`:
// `from`'s balance is the number of token held, which is at least one before the current
// transfer.
// `_balances[to]` could overflow in the conditions described in `_mint`. That would require
// all 2**256 token ids to be minted, which in practice is impossible.
_balances[from] -= 1;
_balances[to] += 1;
}
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
_afterTokenTransfer(from, to, tokenId, 1);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits an {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits an {ApprovalForAll} event.
*/
function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Reverts if the `tokenId` has not been minted yet.
*/
function _requireMinted(uint256 tokenId) internal view virtual {
require(_exists(tokenId), "ERC721: invalid token ID");
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory data
) private returns (bool) {
if (to.isContract()) {
try IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
return retval == IERC721ReceiverUpgradeable.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
/// @solidity memory-safe-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is
* used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`.
* - When `from` is zero, the tokens will be minted for `to`.
* - When `to` is zero, ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
* - `batchSize` is non-zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}
/**
* @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is
* used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`.
* - When `from` is zero, the tokens were minted for `to`.
* - When `to` is zero, ``from``'s tokens were burned.
* - `from` and `to` are never both zero.
* - `batchSize` is non-zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}
/**
* @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
*
* WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant
* being 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`.
*/
// solhint-disable-next-line func-name-mixedcase
function __unsafe_increaseBalance(address account, uint256 amount) internal {
_balances[account] += amount;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[44] private __gap;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721ReceiverUpgradeable {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165Upgradeable.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721Upgradeable is IERC165Upgradeable {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* 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 caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/extensions/ERC721Enumerable.sol)
pragma solidity ^0.8.0;
import "../ERC721Upgradeable.sol";
import "./IERC721EnumerableUpgradeable.sol";
import "../../../proxy/utils/Initializable.sol";
/**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/
abstract contract ERC721EnumerableUpgradeable is Initializable, ERC721Upgradeable, IERC721EnumerableUpgradeable {
function __ERC721Enumerable_init() internal onlyInitializing {
}
function __ERC721Enumerable_init_unchained() internal onlyInitializing {
}
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165Upgradeable, ERC721Upgradeable) returns (bool) {
return interfaceId == type(IERC721EnumerableUpgradeable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Upgradeable.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721EnumerableUpgradeable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev See {ERC721-_beforeTokenTransfer}.
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 firstTokenId,
uint256 batchSize
) internal virtual override {
super._beforeTokenTransfer(from, to, firstTokenId, batchSize);
if (batchSize > 1) {
// Will only trigger during construction. Batch transferring (minting) is not available afterwards.
revert("ERC721Enumerable: consecutive transfers not supported");
}
uint256 tokenId = firstTokenId;
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721Upgradeable.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721Upgradeable.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[46] private __gap;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)
pragma solidity ^0.8.0;
import "../IERC721Upgradeable.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721EnumerableUpgradeable is IERC721Upgradeable {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721Upgradeable.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721MetadataUpgradeable is IERC721Upgradeable {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
// 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 v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract ContextUpgradeable is Initializable {
function __Context_init() internal 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;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
import "./math/MathUpgradeable.sol";
import "./math/SignedMathUpgradeable.sol";
/**
* @dev String operations.
*/
library StringsUpgradeable {
bytes16 private constant _SYMBOLS = "0123456789abcdef";
uint8 private constant _ADDRESS_LENGTH = 20;
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
unchecked {
uint256 length = MathUpgradeable.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), _SYMBOLS))
}
value /= 10;
if (value == 0) break;
}
return buffer;
}
}
/**
* @dev Converts a `int256` to its ASCII `string` decimal representation.
*/
function toString(int256 value) internal pure returns (string memory) {
return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMathUpgradeable.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, MathUpgradeable.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) {
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] = _SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
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 keccak256(bytes(a)) == keccak256(bytes(b));
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {
function __ERC165_init() internal onlyInitializing {
}
function __ERC165_init_unchained() internal onlyInitializing {
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165Upgradeable).interfaceId;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165Upgradeable {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library MathUpgradeable {
enum Rounding {
Down, // Toward negative infinity
Up, // Toward infinity
Zero // Toward zero
}
/**
* @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 up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (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; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
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.
require(denominator > prod1, "Math: mulDiv overflow");
///////////////////////////////////////////////
// 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.
// Does not overflow because the denominator cannot be zero at this stage in the function.
uint256 twos = denominator & (~denominator + 1);
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 (rounding == Rounding.Up && 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 down.
*
* 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 + (rounding == Rounding.Up && result * result < a ? 1 : 0);
}
}
/**
* @dev Return the log in base 2, rounded down, of a positive value.
* 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 + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 10, rounded down, of a positive value.
* 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 + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 256, rounded down, of a positive value.
* 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 + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard signed math utilities missing in the Solidity language.
*/
library SignedMathUpgradeable {
/**
* @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 v4.9.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
*
* 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 v4.9.0) (utils/Multicall.sol)
pragma solidity ^0.8.0;
import "./Address.sol";
/**
* @dev Provides a function to batch together multiple calls in a single external call.
*
* _Available since v4.1._
*/
abstract contract Multicall {
/**
* @dev Receives and executes a batch of function calls on this contract.
* @custom:oz-upgrades-unsafe-allow-reachable delegatecall
*/
function multicall(bytes[] calldata data) external virtual returns (bytes[] memory results) {
results = new bytes[](data.length);
for (uint256 i = 0; i < data.length; i++) {
results[i] = Address.functionDelegateCall(address(this), data[i]);
}
return results;
}
}