ERC-721
Overview
Max Total Supply
431 BLERG
Holders
219
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
3 BLERGLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
LazyMintERC721
Compiler Version
v0.8.9+commit.e5eed63a
Optimization Enabled:
Yes with 800 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; // Interface import { ILazyMintERC721 } from "./ILazyMintERC721.sol"; // Token import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; // Protocol control center. import { ProtocolControl } from "../../ProtocolControl.sol"; // Royalties import "@openzeppelin/contracts/interfaces/IERC2981.sol"; // Access Control + security import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/access/AccessControlEnumerable.sol"; // Meta transactions import "@openzeppelin/contracts/metatx/ERC2771Context.sol"; // Utils import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol"; import "@openzeppelin/contracts/utils/Multicall.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; // Helper interfaces import { IWETH } from "../../interfaces/IWETH.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; contract LazyMintERC721 is ILazyMintERC721, ERC721Enumerable, ERC2771Context, IERC2981, AccessControlEnumerable, ReentrancyGuard, Multicall { using Strings for uint256; /// @dev Only TRANSFER_ROLE holders can have tokens transferred from or to them, during restricted transfers. bytes32 public constant TRANSFER_ROLE = keccak256("TRANSFER_ROLE"); /// @dev Only MINTER_ROLE holders can lazy mint NFTs (i.e. can call functions prefixed with `lazyMint`). bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE"); /// @dev The address interpreted as native token of the chain. address private constant NATIVE_TOKEN = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE; /// @dev The address of the native token wrapper contract. address public immutable nativeTokenWrapper; /// @dev Owner of the contract (purpose: OpenSea compatibility, etc.) address private _owner; /// @dev The adress that receives all primary sales value. address public defaultSaleRecipient; /// @dev The next token ID of the NFT to "lazy mint". uint256 public nextTokenIdToMint; /// @dev The next token ID of the NFT that can be claimed. uint256 public nextTokenIdToClaim; /// @dev Contract interprets 10_000 as 100%. uint64 private constant MAX_BPS = 10_000; /// @dev The % of secondary sales collected as royalties. See EIP 2981. uint64 public royaltyBps; /// @dev The % of primary sales collected by the contract as fees. uint120 public feeBps; /// @dev Whether transfers on tokens are restricted. bool public transfersRestricted; /// @dev Contract level metadata. string public contractURI; /// @dev The protocol control center. ProtocolControl internal controlCenter; uint256[] private baseURIIndices; /// @dev End token Id => URI that overrides `baseURI + tokenId` convention. mapping(uint256 => string) private baseURI; /// @dev The claim conditions at any given moment. ClaimConditions public claimConditions; modifier onlyModuleAdmin() { require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "not module admin."); _; } /// @dev Checks whether caller has MINTER_ROLE. modifier onlyMinter() { require(hasRole(MINTER_ROLE, _msgSender()), "not minter."); _; } constructor( string memory _name, string memory _symbol, string memory _contractURI, address payable _controlCenter, address _trustedForwarder, address _nativeTokenWrapper, address _saleRecipient, uint128 _royaltyBps, uint128 _feeBps ) ERC721(_name, _symbol) ERC2771Context(_trustedForwarder) { // Set the protocol control center controlCenter = ProtocolControl(_controlCenter); nativeTokenWrapper = _nativeTokenWrapper; defaultSaleRecipient = _saleRecipient; contractURI = _contractURI; royaltyBps = uint64(_royaltyBps); feeBps = uint120(_feeBps); address deployer = _msgSender(); _owner = deployer; _setupRole(DEFAULT_ADMIN_ROLE, deployer); _setupRole(MINTER_ROLE, deployer); _setupRole(TRANSFER_ROLE, deployer); } /// ===== Public functions ===== /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return hasRole(DEFAULT_ADMIN_ROLE, _owner) ? _owner : address(0); } /// @dev Returns the URI for a given tokenId. function tokenURI(uint256 _tokenId) public view override returns (string memory) { for (uint256 i = 0; i < baseURIIndices.length; i += 1) { if (_tokenId < baseURIIndices[i]) { return string(abi.encodePacked(baseURI[baseURIIndices[i]], _tokenId.toString())); } } return ""; } /// @dev At any given moment, returns the uid for the active claim condition. function getIndexOfActiveCondition() public view returns (uint256) { uint256 totalConditionCount = claimConditions.totalConditionCount; require(totalConditionCount > 0, "no public mint condition."); for (uint256 i = totalConditionCount; i > 0; i -= 1) { if (block.timestamp >= claimConditions.claimConditionAtIndex[i - 1].startTimestamp) { return i - 1; } } revert("no active mint condition."); } /// ===== External functions ===== /** * @dev Lets an account with `MINTER_ROLE` mint tokens of ID from `nextTokenIdToMint` * to `nextTokenIdToMint + _amount - 1`. The URIs for these tokenIds is baseURI + `${tokenId}`. */ function lazyMint(uint256 _amount, string calldata _baseURIForTokens) external onlyMinter { uint256 startId = nextTokenIdToMint; uint256 baseURIIndex = startId + _amount; nextTokenIdToMint = baseURIIndex; baseURI[baseURIIndex] = _baseURIForTokens; baseURIIndices.push(baseURIIndex); emit LazyMintedTokens(startId, startId + _amount - 1, _baseURIForTokens); } /// @dev Lets an account claim a given quantity of tokens, of a single tokenId. function claim(uint256 _quantity, bytes32[] calldata _proofs) external payable nonReentrant { uint256 tokenIdToClaim = nextTokenIdToClaim; // Get the claim conditions. uint256 activeConditionIndex = getIndexOfActiveCondition(); ClaimCondition memory condition = claimConditions.claimConditionAtIndex[activeConditionIndex]; // Verify claim validity. If not valid, revert. verifyClaimIsValid(_quantity, _proofs, activeConditionIndex, condition); // If there's a price, collect price. collectClaimPrice(condition, _quantity); // Mint the relevant tokens to claimer. transferClaimedTokens(activeConditionIndex, _quantity); emit ClaimedTokens(activeConditionIndex, _msgSender(), tokenIdToClaim, _quantity); } /// @dev Lets a module admin update mint conditions without resetting the restrictions. function updateClaimConditions(ClaimCondition[] calldata _conditions) external onlyModuleAdmin { resetClaimConditions(_conditions); emit NewClaimConditions(_conditions); } /// @dev Lets a module admin set mint conditions. function setClaimConditions(ClaimCondition[] calldata _conditions) external onlyModuleAdmin { uint256 numOfConditionsSet = resetClaimConditions(_conditions); resetTimestampRestriction(numOfConditionsSet); emit NewClaimConditions(_conditions); } /// @dev See EIP 2981 function royaltyInfo(uint256, uint256 salePrice) external view virtual override returns (address receiver, uint256 royaltyAmount) { receiver = controlCenter.getRoyaltyTreasury(address(this)); royaltyAmount = (salePrice * royaltyBps) / MAX_BPS; } // ===== Internal functions ===== /// @dev Overwrites the current claim conditions with new claim conditions function resetClaimConditions(ClaimCondition[] calldata _conditions) internal returns (uint256 indexForCondition) { // make sure the conditions are sorted in ascending order uint256 lastConditionStartTimestamp; for (uint256 i = 0; i < _conditions.length; i++) { require( lastConditionStartTimestamp == 0 || lastConditionStartTimestamp < _conditions[i].startTimestamp, "startTimestamp must be in ascending order." ); require(_conditions[i].maxClaimableSupply > 0, "max mint supply cannot be 0."); require(_conditions[i].quantityLimitPerTransaction > 0, "quantity limit cannot be 0."); claimConditions.claimConditionAtIndex[indexForCondition] = ClaimCondition({ startTimestamp: _conditions[i].startTimestamp, maxClaimableSupply: _conditions[i].maxClaimableSupply, supplyClaimed: 0, quantityLimitPerTransaction: _conditions[i].quantityLimitPerTransaction, waitTimeInSecondsBetweenClaims: _conditions[i].waitTimeInSecondsBetweenClaims, pricePerToken: _conditions[i].pricePerToken, currency: _conditions[i].currency, merkleRoot: _conditions[i].merkleRoot }); indexForCondition += 1; lastConditionStartTimestamp = _conditions[i].startTimestamp; } uint256 totalConditionCount = claimConditions.totalConditionCount; if (indexForCondition < totalConditionCount) { for (uint256 j = indexForCondition; j < totalConditionCount; j += 1) { delete claimConditions.claimConditionAtIndex[j]; } } claimConditions.totalConditionCount = indexForCondition; } /// @dev Updates the `timstampLimitIndex` to reset the time restriction between claims, for a claim condition. function resetTimestampRestriction(uint256 _factor) internal { claimConditions.timstampLimitIndex += _factor; } /// @dev Checks whether a request to claim tokens obeys the active mint condition. function verifyClaimIsValid( uint256 _quantity, bytes32[] calldata _proofs, uint256 _conditionIndex, ClaimCondition memory _claimCondition ) internal view { require(_quantity > 0 && _quantity <= _claimCondition.quantityLimitPerTransaction, "invalid quantity claimed."); require( _claimCondition.supplyClaimed + _quantity <= _claimCondition.maxClaimableSupply, "exceed max mint supply." ); uint256 timestampIndex = _conditionIndex + claimConditions.timstampLimitIndex; uint256 timestampOfLastClaim = claimConditions.timestampOfLastClaim[_msgSender()][timestampIndex]; uint256 nextValidTimestampForClaim = getTimestampForNextValidClaim(_conditionIndex, _msgSender()); require(timestampOfLastClaim == 0 || block.timestamp >= nextValidTimestampForClaim, "cannot claim yet."); if (_claimCondition.merkleRoot != bytes32(0)) { bytes32 leaf = keccak256(abi.encodePacked(_msgSender())); require(MerkleProof.verify(_proofs, _claimCondition.merkleRoot, leaf), "not in whitelist."); } } /// @dev Collects and distributes the primary sale value of tokens being claimed. function collectClaimPrice(ClaimCondition memory _claimCondition, uint256 _quantityToClaim) internal { if (_claimCondition.pricePerToken == 0) { return; } uint256 totalPrice = _quantityToClaim * _claimCondition.pricePerToken; uint256 fees = (totalPrice * feeBps) / MAX_BPS; if (_claimCondition.currency == NATIVE_TOKEN) { require(msg.value == totalPrice, "must send total price."); } else { validateERC20BalAndAllowance(_msgSender(), _claimCondition.currency, totalPrice); } transferCurrency(_claimCondition.currency, _msgSender(), controlCenter.getRoyaltyTreasury(address(this)), fees); transferCurrency(_claimCondition.currency, _msgSender(), defaultSaleRecipient, totalPrice - fees); } /// @dev Transfers the tokens being claimed. function transferClaimedTokens(uint256 _claimConditionIndex, uint256 _quantityBeingClaimed) internal { // Update the supply minted under mint condition. claimConditions.claimConditionAtIndex[_claimConditionIndex].supplyClaimed += _quantityBeingClaimed; // Update the claimer's next valid timestamp to mint. If next mint timestamp overflows, cap it to max uint256. uint256 timestampIndex = _claimConditionIndex + claimConditions.timstampLimitIndex; claimConditions.timestampOfLastClaim[_msgSender()][timestampIndex] = block.timestamp; uint256 tokenIdToClaim = nextTokenIdToClaim; for (uint256 i = 0; i < _quantityBeingClaimed; i += 1) { _mint(_msgSender(), tokenIdToClaim); tokenIdToClaim += 1; } nextTokenIdToClaim = tokenIdToClaim; } /// @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) { if (_from == address(this)) { IWETH(nativeTokenWrapper).withdraw(_amount); safeTransferNativeToken(_to, _amount); } else if (_to == address(this)) { require(_amount == msg.value, "native token value does not match bid amount."); IWETH(nativeTokenWrapper).deposit{ value: _amount }(); } else { safeTransferNativeToken(_to, _amount); } } else { safeTransferERC20(_currency, _from, _to, _amount); } } /// @dev Validates that `_addrToCheck` owns and has approved contract to transfer the appropriate amount of currency function validateERC20BalAndAllowance( address _addrToCheck, address _currency, uint256 _currencyAmountToCheckAgainst ) internal view { require( IERC20(_currency).balanceOf(_addrToCheck) >= _currencyAmountToCheckAgainst && IERC20(_currency).allowance(_addrToCheck, address(this)) >= _currencyAmountToCheckAgainst, "insufficient currency balance or allowance." ); } /// @dev Transfers `amount` of native token to `to`. function safeTransferNativeToken(address to, uint256 value) internal { (bool success, ) = to.call{ value: value }(""); if (!success) { IWETH(nativeTokenWrapper).deposit{ value: value }(); safeTransferERC20(nativeTokenWrapper, address(this), to, value); } } /// @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; } uint256 balBefore = IERC20(_currency).balanceOf(_to); bool success = _from == address(this) ? IERC20(_currency).transfer(_to, _amount) : IERC20(_currency).transferFrom(_from, _to, _amount); uint256 balAfter = IERC20(_currency).balanceOf(_to); require(success && balAfter == balBefore + _amount, "failed to transfer currency."); } // ===== Setter functions ===== /// @dev Lets a module admin set the default recipient of all primary sales. function setDefaultSaleRecipient(address _saleRecipient) external onlyModuleAdmin { defaultSaleRecipient = _saleRecipient; emit NewSaleRecipient(_saleRecipient); } /// @dev Lets a module admin update the royalties paid on secondary token sales. function setRoyaltyBps(uint256 _royaltyBps) public onlyModuleAdmin { require(_royaltyBps <= MAX_BPS, "bps <= 10000."); royaltyBps = uint64(_royaltyBps); emit RoyaltyUpdated(_royaltyBps); } /// @dev Lets a module admin update the fees on primary sales. function setFeeBps(uint256 _feeBps) public onlyModuleAdmin { require(_feeBps <= MAX_BPS, "bps <= 10000."); feeBps = uint120(_feeBps); emit PrimarySalesFeeUpdates(_feeBps); } /// @dev Lets a module admin restrict token transfers. function setRestrictedTransfer(bool _restrictedTransfer) external onlyModuleAdmin { transfersRestricted = _restrictedTransfer; emit TransfersRestricted(_restrictedTransfer); } /// @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 onlyModuleAdmin { require(hasRole(DEFAULT_ADMIN_ROLE, _newOwner), "new owner not module admin."); address _prevOwner = _owner; _owner = _newOwner; emit NewOwner(_prevOwner, _newOwner); } /// @dev Lets a module admin set the URI for contract-level metadata. function setContractURI(string calldata _uri) external onlyModuleAdmin { contractURI = _uri; } // ===== Getter functions ===== /// @dev Returns the current active mint condition for a given tokenId. function getTimestampForNextValidClaim(uint256 _index, address _claimer) public view returns (uint256 nextValidTimestampForClaim) { uint256 timestampIndex = _index + claimConditions.timstampLimitIndex; uint256 timestampOfLastClaim = claimConditions.timestampOfLastClaim[_claimer][timestampIndex]; unchecked { nextValidTimestampForClaim = timestampOfLastClaim + claimConditions.claimConditionAtIndex[_index].waitTimeInSecondsBetweenClaims; if (nextValidTimestampForClaim < timestampOfLastClaim) { nextValidTimestampForClaim = type(uint256).max; } } } /// @dev Returns the mint condition for a given tokenId, at the given index. function getClaimConditionAtIndex(uint256 _index) external view returns (ClaimCondition memory mintCondition) { mintCondition = claimConditions.claimConditionAtIndex[_index]; } /// ===== ERC 721 functions ===== /// @dev Burns `tokenId`. See {ERC721-_burn}. function burn(uint256 tokenId) public virtual { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved"); _burn(tokenId); } /// @dev See {ERC721-_beforeTokenTransfer}. function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override(ERC721Enumerable) { super._beforeTokenTransfer(from, to, tokenId); // if transfer is restricted on the contract, we still want to allow burning and minting if (transfersRestricted && from != address(0) && to != address(0)) { require(hasRole(TRANSFER_ROLE, from) || hasRole(TRANSFER_ROLE, to), "restricted to TRANSFER_ROLE holders"); } } function supportsInterface(bytes4 interfaceId) public view virtual override(AccessControlEnumerable, ERC721Enumerable, IERC165) returns (bool) { return super.supportsInterface(interfaceId) || interfaceId == type(IERC2981).interfaceId; } function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address sender) { return ERC2771Context._msgSender(); } function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) { return ERC2771Context._msgData(); } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; /** * `LazyMintERC721` is an ERC 721 contract. It takes in a base URI for every * `n` tokens lazy minted at once. The URI for each of the `n` tokens lazy minted * is the provided baseURI + `${tokenId}` (e.g. "ipsf://Qmece.../1"). * * The module admin (account with `DEFAULT_ADMIN ROLE`) can create claim conditions * with non-overlapping time windows, and accounts can claim the NFTs, in a given time * window, according to that time window's claim conditions. */ interface ILazyMintERC721 { /** * @notice The claim conditions for a given tokenId x time window. * * @param startTimestamp The unix timestamp after which the claim condition starts. * The same claim condition lasts until the `startTimestamp` * of the next claim condition. * * @param maxClaimableSupply The maximum 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. * * @param quantityLimitPerTransaction The maximum number of tokens a single account can * claim in a single transaction. * * @param waitTimeInSecondsBetweenClaims The least number of seconds an account must wait * after claiming tokens, to be able to claim again. * * @param merkleRoot Only accounts whitelisted by `merkleRoot` can claim tokens * under the claim condition. * * @param pricePerToken The price per token that can be claimed. * * @param currency The currency in which `pricePerToken` must be paid. */ struct ClaimCondition { uint256 startTimestamp; uint256 maxClaimableSupply; uint256 supplyClaimed; uint256 quantityLimitPerTransaction; uint256 waitTimeInSecondsBetweenClaims; bytes32 merkleRoot; uint256 pricePerToken; address currency; } /** * @notice The set of all claim conditions at any given moment. * * @dev In the contract, this is used as a standalone struct. * * @param totalConditionCount The uid for each claim condition. Incremented * by one every time a claim condition is created. * * @param claimConditionAtIndex The claim conditions at a given uid. Claim conditions * are ordered in an ascending order by their `startTimestamp`. * * @param nextValidTimestampForClaim Account => uid for a claim condition => timestamp after * which the account can claim tokens again. */ struct ClaimConditions { uint256 totalConditionCount; uint256 timstampLimitIndex; mapping(uint256 => ClaimCondition) claimConditionAtIndex; mapping(address => mapping(uint256 => uint256)) timestampOfLastClaim; } /// @dev Emitted when tokens are lazy minted. event LazyMintedTokens(uint256 startTokenId, uint256 endTokenId, string baseURI); /// @dev Emitted when tokens are claimed. event ClaimedTokens( uint256 indexed claimConditionIndex, address indexed claimer, uint256 startTokenId, uint256 quantityClaimed ); /// @dev Emitted when new mint conditions are set for a token. event NewClaimConditions(ClaimCondition[] claimConditions); /// @dev Emitted when a new sale recipient is set. event NewSaleRecipient(address indexed recipient); /// @dev Emitted when the royalty fee bps is updated event RoyaltyUpdated(uint256 newRoyaltyBps); /// @dev Emitted when fee on primary sales is updated. event PrimarySalesFeeUpdates(uint256 newFeeBps); /// @dev Emitted when transfers are set as restricted / not-restricted. event TransfersRestricted(bool restricted); /// @dev Emitted when a new Owner is set. event NewOwner(address prevOwner, address newOwner); /// @dev The next token ID of the NFT to "lazy mint". function nextTokenIdToMint() external returns (uint256); /** * @notice Lets an account with `MINTER_ROLE` mint tokens of ID from `nextTokenIdToMint` * to `nextTokenIdToMint + _amount - 1`. The URIs for these tokenIds is baseURI + `${tokenId}`. * * @param _amount The amount of tokens (each with a unique tokenId) to lazy mint. */ function lazyMint(uint256 _amount, string calldata _baseURIForTokens) external; /** * @notice Lets an account claim a given quantity of tokens. * * @param _quantity The quantity of tokens to claim. * @param _proofs The proof required to prove the account's inclusion in the merkle root whitelist * of the mint conditions that apply. */ function claim(uint256 _quantity, bytes32[] calldata _proofs) external payable; /** * @notice Lets a module admin (account with `DEFAULT_ADMIN_ROLE`) set claim conditions. * * @param _conditions Mint conditions in ascending order by `startTimestamp`. */ function setClaimConditions(ClaimCondition[] calldata _conditions) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.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 ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings 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. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @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) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); 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 overriden 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 = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); 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: transfer caller is not owner nor 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: transfer caller is not owner nor 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 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 _owners[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) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, 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); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {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 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 IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol) pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.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 ERC721Enumerable is ERC721, IERC721Enumerable { // 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(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @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 < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @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 = ERC721.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 = ERC721.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(); } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; // Access Control import "@openzeppelin/contracts/access/AccessControlEnumerable.sol"; import "@openzeppelin/contracts/proxy/utils/Initializable.sol"; import "@openzeppelin/contracts/utils/Multicall.sol"; // Registry import { Registry } from "./Registry.sol"; import { Royalty } from "./Royalty.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; contract ProtocolControl is AccessControlEnumerable, Multicall, Initializable { /// @dev Contract version string public constant version = "1"; /// @dev MAX_BPS for the contract: 10_000 == 100% uint256 public constant MAX_BPS = 10000; /// @dev The address interpreted as native token of the chain. address public constant NATIVE_TOKEN = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE; /// @dev Module ID => Module address. mapping(bytes32 => address) public modules; /// @dev Module type => Num of modules of that type. mapping(uint256 => uint256) public numOfModuleType; /// @dev module address => royalty address mapping(address => address) private moduleRoyalty; /// @dev The top level app registry. address public registry; /// @dev Deployer's treasury address public royaltyTreasury; /// @dev The Forwarder for this app's modules. address private _forwarder; /// @dev Contract level metadata. string public contractURI; /// @dev Events. event ModuleUpdated(bytes32 indexed moduleId, address indexed module); event TreasuryUpdated(address _newTreasury); event ForwarderUpdated(address _newForwarder); event FundsWithdrawn(address indexed to, address indexed currency, uint256 amount, uint256 fee); event EtherReceived(address from, uint256 amount); event RoyaltyTreasuryUpdated( address indexed protocolControlAddress, address indexed moduleAddress, address treasury ); /// @dev Check whether the caller is a protocol admin modifier onlyProtocolAdmin() { require( hasRole(DEFAULT_ADMIN_ROLE, msg.sender), "ProtocolControl: Only protocol admins can call this function." ); _; } constructor() initializer {} function initialize( address _registry, address _admin, string memory _uri ) external initializer { // Set contract URI contractURI = _uri; // Set top level ap registry registry = _registry; // Set default royalty treasury address royaltyTreasury = address(this); // Set access control roles _setupRole(DEFAULT_ADMIN_ROLE, _admin); } /// @dev Lets the contract receive ether. receive() external payable { emit EtherReceived(msg.sender, msg.value); } /// @dev Initialize treasury payment royalty splitting pool function setRoyaltyTreasury(address payable _treasury) external onlyProtocolAdmin { require(_isRoyaltyTreasuryValid(_treasury), "ProtocolControl: provider shares too low."); royaltyTreasury = _treasury; emit RoyaltyTreasuryUpdated(address(this), address(0), _treasury); } /// @dev _treasury must be PaymentSplitter compatible interface. function setModuleRoyaltyTreasury(address moduleAddress, address payable _treasury) external onlyProtocolAdmin { require(_isRoyaltyTreasuryValid(_treasury), "ProtocolControl: provider shares too low."); moduleRoyalty[moduleAddress] = _treasury; emit RoyaltyTreasuryUpdated(address(this), moduleAddress, _treasury); } /// @dev validate to make sure protocol provider (the registry) gets enough fees. function _isRoyaltyTreasuryValid(address payable _treasury) private view returns (bool) { // Get `Royalty` and `Registry` instances Royalty royalty = Royalty(_treasury); Registry _registry = Registry(registry); // Calculate the protocol provider's shares. uint256 royaltyRegistryShares = royalty.shares(_registry.treasury()); uint256 royaltyTotalShares = royalty.totalShares(); uint256 registryCutBps = (royaltyRegistryShares * MAX_BPS) / royaltyTotalShares; // 10 bps (0.10%) tolerance in case of precision loss // making sure registry treasury gets at least the fee's worth of shares. uint256 feeBpsTolerance = 10; return registryCutBps >= (_registry.getFeeBps(address(this)) - feeBpsTolerance); } /// @dev Returns the Royalty payment splitter for a particular module. function getRoyaltyTreasury(address moduleAddress) external view returns (address) { address moduleRoyaltyTreasury = moduleRoyalty[moduleAddress]; if (moduleRoyaltyTreasury == address(0)) { return royaltyTreasury; } return moduleRoyaltyTreasury; } /// @dev Lets a protocol admin add a module to the protocol. function addModule(address _newModuleAddress, uint256 _moduleType) external onlyProtocolAdmin returns (bytes32 moduleId) { // `moduleId` is collision resitant -- unique `_moduleType` and incrementing `numOfModuleType` moduleId = keccak256(abi.encodePacked(numOfModuleType[_moduleType], _moduleType)); numOfModuleType[_moduleType] += 1; modules[moduleId] = _newModuleAddress; emit ModuleUpdated(moduleId, _newModuleAddress); } /// @dev Lets a protocol admin change the address of a module of the protocol. function updateModule(bytes32 _moduleId, address _newModuleAddress) external onlyProtocolAdmin { require(modules[_moduleId] != address(0), "ProtocolControl: a module with this ID does not exist."); modules[_moduleId] = _newModuleAddress; emit ModuleUpdated(_moduleId, _newModuleAddress); } /// @dev Sets contract URI for the contract-level metadata of the contract. function setContractURI(string calldata _URI) external onlyProtocolAdmin { contractURI = _URI; } /// @dev Lets the admin set a new Forwarder address [NOTE: for off-chain convenience only.] function setForwarder(address forwarder) external onlyProtocolAdmin { _forwarder = forwarder; emit ForwarderUpdated(forwarder); } /// @dev Returns all addresses for a module type function getAllModulesOfType(uint256 _moduleType) external view returns (address[] memory allModules) { uint256 numOfModules = numOfModuleType[_moduleType]; allModules = new address[](numOfModules); for (uint256 i = 0; i < numOfModules; i += 1) { bytes32 moduleId = keccak256(abi.encodePacked(i, _moduleType)); allModules[i] = modules[moduleId]; } } /// @dev Returns the forwarder address stored on the contract. function getForwarder() public view returns (address) { if (_forwarder == address(0)) { return Registry(registry).forwarder(); } return _forwarder; } /// @dev Lets a protocol admin withdraw tokens from this contract. function withdrawFunds(address to, address currency) external onlyProtocolAdmin { Registry _registry = Registry(registry); IERC20 _currency = IERC20(currency); address registryTreasury = _registry.treasury(); uint256 amount; bool isNativeToken = _isNativeToken(address(_currency)); if (isNativeToken) { amount = address(this).balance; } else { amount = _currency.balanceOf(address(this)); } uint256 registryTreasuryFee = (amount * _registry.getFeeBps(address(this))) / MAX_BPS; amount -= registryTreasuryFee; bool transferSuccess; if (isNativeToken) { (transferSuccess, ) = payable(to).call{ value: amount }(""); require(transferSuccess, "failed to withdraw funds"); (transferSuccess, ) = payable(registryTreasury).call{ value: registryTreasuryFee }(""); require(transferSuccess, "failed to withdraw funds to registry"); emit FundsWithdrawn(to, currency, amount, registryTreasuryFee); } else { transferSuccess = _currency.transfer(to, amount); require(transferSuccess, "failed to transfer payment"); transferSuccess = _currency.transfer(registryTreasury, registryTreasuryFee); require(transferSuccess, "failed to transfer payment to registry"); emit FundsWithdrawn(to, currency, amount, registryTreasuryFee); } } /// @dev Checks whether an address is to be interpreted as the native token function _isNativeToken(address _toCheck) internal pure returns (bool) { return _toCheck == NATIVE_TOKEN || _toCheck == address(0); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (interfaces/IERC2981.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Interface for the NFT Royalty Standard */ interface IERC2981 is IERC165 { /** * @dev Called with the sale price to determine how much royalty is owed and to whom. * @param tokenId - the NFT asset queried for royalty information * @param salePrice - the sale price of the NFT asset specified by `tokenId` * @return receiver - address of who should be sent the royalty payment * @return royaltyAmount - the royalty payment amount for `salePrice` */ function royaltyInfo(uint256 tokenId, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/AccessControlEnumerable.sol) pragma solidity ^0.8.0; import "./IAccessControlEnumerable.sol"; import "./AccessControl.sol"; import "../utils/structs/EnumerableSet.sol"; /** * @dev Extension of {AccessControl} that allows enumerating the members of each role. */ abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl { using EnumerableSet for EnumerableSet.AddressSet; mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControlEnumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @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 * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] * for more information. */ function getRoleMember(bytes32 role, uint256 index) public view override returns (address) { return _roleMembers[role].at(index); } /** * @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) public view override returns (uint256) { return _roleMembers[role].length(); } /** * @dev Overload {_grantRole} to track enumerable memberships */ function _grantRole(bytes32 role, address account) internal virtual override { super._grantRole(role, account); _roleMembers[role].add(account); } /** * @dev Overload {_revokeRole} to track enumerable memberships */ function _revokeRole(bytes32 role, address account) internal virtual override { super._revokeRole(role, account); _roleMembers[role].remove(account); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (metatx/ERC2771Context.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Context variant with ERC2771 support. */ abstract contract ERC2771Context is Context { address private _trustedForwarder; constructor(address trustedForwarder) { _trustedForwarder = trustedForwarder; } function isTrustedForwarder(address forwarder) public view virtual returns (bool) { return forwarder == _trustedForwarder; } function _msgSender() internal view virtual override returns (address sender) { if (isTrustedForwarder(msg.sender)) { // The assembly code is more direct than the Solidity version using `abi.decode`. assembly { sender := shr(96, calldataload(sub(calldatasize(), 20))) } } else { return super._msgSender(); } } function _msgData() internal view virtual override returns (bytes calldata) { if (isTrustedForwarder(msg.sender)) { return msg.data[:msg.data.length - 20]; } else { return super._msgData(); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /** * @dev These functions deal with verification of Merkle Trees proofs. * * The proofs can be generated using the JavaScript library * https://github.com/miguelmota/merkletreejs[merkletreejs]. * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled. * * See `test/utils/cryptography/MerkleProof.test.js` for some examples. */ library MerkleProof { /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. */ function verify( bytes32[] memory proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProof(proof, leaf) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merklee tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leafs & pre-images are assumed to be sorted. * * _Available since v4.4._ */ function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { bytes32 proofElement = proof[i]; if (computedHash <= proofElement) { // Hash(current computed hash + current element of the proof) computedHash = keccak256(abi.encodePacked(computedHash, proofElement)); } else { // Hash(current element of the proof + current computed hash) computedHash = keccak256(abi.encodePacked(proofElement, computedHash)); } } return computedHash; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (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. */ function multicall(bytes[] calldata data) external 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; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: 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: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, 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 operator); /** * @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: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /** * @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 * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Enumerable.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /** * @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 (proxy/utils/Initializable.sol) pragma solidity ^0.8.0; import "../../utils/Address.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 a proxied contract can't have 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. * * 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 initialize the implementation contract, you can either invoke the * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() initializer {} * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Modifier to protect an initializer function from being invoked twice. */ modifier initializer() { // If the contract is initializing we ignore whether _initialized is set in order to support multiple // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the // contract may have been reentered. require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} modifier, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } function _isConstructor() private view returns (bool) { return !Address.isContract(address(this)); } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; // CREATE2 -- contract deployment. import "@openzeppelin/contracts/utils/Create2.sol"; // Access Control import "@openzeppelin/contracts/access/Ownable.sol"; // Protocol Components import { IControlDeployer } from "./interfaces/IControlDeployer.sol"; import { Forwarder } from "./Forwarder.sol"; import { ProtocolControl } from "./ProtocolControl.sol"; contract Registry is Ownable { uint256 public constant MAX_PROVIDER_FEE_BPS = 1000; // 10% uint256 public defaultFeeBps = 500; // 5% /// @dev service provider / admin treasury address public treasury; /// @dev `Forwarder` for meta-transacitons address public forwarder; /// @dev The Create2 `ProtocolControl` contract factory. IControlDeployer public deployer; struct ProtocolControls { // E.g. if `latestVersion == 2`, there are 2 `ProtocolControl` contracts deployed. uint256 latestVersion; // Mapping from version => contract address. mapping(uint256 => address) protocolControlAddress; } /// @dev Mapping from app deployer => versions + app addresses. mapping(address => ProtocolControls) private _protocolControls; /// @dev Mapping from app (protocol control) => protocol provider fees for the app. mapping(address => uint256) private protocolControlFeeBps; /// @dev Emitted when the treasury is updated. event TreasuryUpdated(address newTreasury); /// @dev Emitted when a new deployer is set. event DeployerUpdated(address newDeployer); /// @dev Emitted when the default protocol provider fees bps is updated. event DefaultFeeBpsUpdated(uint256 defaultFeeBps); /// @dev Emitted when the protocol provider fees bps for a particular `ProtocolControl` is updated. event ProtocolControlFeeBpsUpdated(address indexed control, uint256 feeBps); /// @dev Emitted when an instance of `ProtocolControl` is migrated to this registry. event MigratedProtocolControl(address indexed deployer, uint256 indexed version, address indexed controlAddress); /// @dev Emitted when an instance of `ProtocolControl` is deployed. event NewProtocolControl( address indexed deployer, uint256 indexed version, address indexed controlAddress, address controlDeployer ); constructor( address _treasury, address _forwarder, address _deployer ) { treasury = _treasury; forwarder = _forwarder; deployer = IControlDeployer(_deployer); } /// @dev Deploys `ProtocolControl` with `_msgSender()` as admin. function deployProtocol(string memory uri) external { // Get deployer address caller = _msgSender(); // Get version for deployment uint256 version = getNextVersion(caller); // Deploy contract and get deployment address. address controlAddress = deployer.deployControl(version, caller, uri); _protocolControls[caller].protocolControlAddress[version] = controlAddress; emit NewProtocolControl(caller, version, controlAddress, address(deployer)); } /// @dev Returns the latest version of protocol control. function getProtocolControlCount(address _deployer) external view returns (uint256) { return _protocolControls[_deployer].latestVersion; } /// @dev Returns the protocol control address for the given version. function getProtocolControl(address _deployer, uint256 index) external view returns (address) { return _protocolControls[_deployer].protocolControlAddress[index]; } /// @dev Lets the owner migrate `ProtocolControl` instances from a previous registry. function addProtocolControl(address _deployer, address _protocolControl) external onlyOwner { // Get version for protocolControl uint256 version = getNextVersion(_deployer); _protocolControls[_deployer].protocolControlAddress[version] = _protocolControl; emit MigratedProtocolControl(_deployer, version, _protocolControl); } /// @dev Sets a new `ProtocolControl` deployer in case `ProtocolControl` is upgraded. function setDeployer(address _newDeployer) external onlyOwner { deployer = IControlDeployer(_newDeployer); emit DeployerUpdated(_newDeployer); } /// @dev Sets a new protocol provider treasury address. function setTreasury(address _newTreasury) external onlyOwner { treasury = _newTreasury; emit TreasuryUpdated(_newTreasury); } /// @dev Sets a new `defaultFeeBps` for protocol provider fees. function setDefaultFeeBps(uint256 _newFeeBps) external onlyOwner { require(_newFeeBps <= MAX_PROVIDER_FEE_BPS, "Registry: provider fee cannot be greater than 10%"); defaultFeeBps = _newFeeBps; emit DefaultFeeBpsUpdated(_newFeeBps); } /// @dev Sets the protocol provider fee for a particular instance of `ProtocolControl`. function setProtocolControlFeeBps(address protocolControl, uint256 _newFeeBps) external onlyOwner { require(_newFeeBps <= MAX_PROVIDER_FEE_BPS, "Registry: provider fee cannot be greater than 10%"); protocolControlFeeBps[protocolControl] = _newFeeBps; emit ProtocolControlFeeBpsUpdated(protocolControl, _newFeeBps); } /// @dev Returns the protocol provider fee for a particular instance of `ProtocolControl`. function getFeeBps(address protocolControl) external view returns (uint256) { uint256 fees = protocolControlFeeBps[protocolControl]; if (fees == 0) { return defaultFeeBps; } return fees; } /// @dev Returns the next version of `ProtocolControl` for the given `_deployer`. function getNextVersion(address _deployer) internal returns (uint256) { // Increment version _protocolControls[_deployer].latestVersion += 1; return _protocolControls[_deployer].latestVersion; } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; // Base import "./openzeppelin-presets/finance/PaymentSplitter.sol"; // Meta transactions import "@openzeppelin/contracts/metatx/ERC2771Context.sol"; import "@openzeppelin/contracts/utils/Multicall.sol"; import "@openzeppelin/contracts/access/AccessControlEnumerable.sol"; import { Registry } from "./Registry.sol"; import { ProtocolControl } from "./ProtocolControl.sol"; /** * Royalty automatically adds protocol provider (the registry) of protocol control to the payees * and shares that represent the fees. */ contract Royalty is PaymentSplitter, AccessControlEnumerable, ERC2771Context, Multicall { /// @dev The protocol control center. ProtocolControl private controlCenter; /// @dev Contract level metadata. string private _contractURI; modifier onlyModuleAdmin() { require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "only module admin role"); _; } /// @dev shares_ are scaled by 10,000 to prevent precision loss when including fees constructor( address payable _controlCenter, address _trustedForwarder, string memory _uri, address[] memory payees, uint256[] memory shares_ ) PaymentSplitter() ERC2771Context(_trustedForwarder) { require(payees.length == shares_.length, "Royalty: unequal number of payees and shares provided."); require(payees.length > 0, "Royalty: no payees provided."); // Set contract metadata _contractURI = _uri; // Set the protocol's control center. controlCenter = ProtocolControl(_controlCenter); Registry registry = Registry(controlCenter.registry()); uint256 feeBps = registry.getFeeBps(_controlCenter); uint256 totalScaledShares = 0; uint256 totalScaledSharesMinusFee = 0; // Scaling the share, so we don't lose precision on division for (uint256 i = 0; i < payees.length; i++) { uint256 scaledShares = shares_[i] * 10000; totalScaledShares += scaledShares; uint256 feeFromScaledShares = (scaledShares * feeBps) / 10000; uint256 scaledSharesMinusFee = scaledShares - feeFromScaledShares; totalScaledSharesMinusFee += scaledSharesMinusFee; // WARNING: Do not call _addPayee outside of this constructor. _addPayee(payees[i], scaledSharesMinusFee); } // WARNING: Do not call _addPayee outside of this constructor. uint256 totalFeeShares = totalScaledShares - totalScaledSharesMinusFee; _addPayee(registry.treasury(), totalFeeShares); _setupRole(DEFAULT_ADMIN_ROLE, _msgSender()); } /// @dev See ERC2771 function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address sender) { return ERC2771Context._msgSender(); } /// @dev See ERC2771 function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) { return ERC2771Context._msgData(); } /// @dev Sets contract URI for the contract-level metadata of the contract. function setContractURI(string calldata _URI) external onlyModuleAdmin { _contractURI = _URI; } /// @dev Returns the URI for the contract-level metadata of the contract. function contractURI() public view returns (string memory) { return _contractURI; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControlEnumerable.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; /** * @dev External interface of AccessControlEnumerable declared to support ERC165 detection. */ interface IAccessControlEnumerable is IAccessControl { /** * @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 * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] * 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: MIT // OpenZeppelin Contracts v4.4.1 (access/AccessControl.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; import "../utils/Context.sol"; import "../utils/Strings.sol"; import "../utils/introspection/ERC165.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping(address => bool) members; bytes32 adminRole; } mapping(bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role, _msgSender()); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(uint160(account), 20), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view override returns (bytes32) { return _roles[role].adminRole; } /** * @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) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /** * @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) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /** * @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 revoked `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== * * NOTE: This function is deprecated in favor of {_grantRole}. */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { bytes32 previousAdminRole = getRoleAdmin(role); _roles[role].adminRole = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /** * @dev Grants `role` to `account`. * * Internal function without access restriction. */ function _grantRole(bytes32 role, address account) internal virtual { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } /** * @dev Revokes `role` from `account`. * * Internal function without access restriction. */ function _revokeRole(bytes32 role, address account) internal virtual { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/structs/EnumerableSet.sol) pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { return _values(set._inner); } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; assembly { result := store } return result; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol) pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { /** * @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: MIT // OpenZeppelin Contracts v4.4.1 (utils/Create2.sol) pragma solidity ^0.8.0; /** * @dev Helper to make usage of the `CREATE2` EVM opcode easier and safer. * `CREATE2` can be used to compute in advance the address where a smart * contract will be deployed, which allows for interesting new mechanisms known * as 'counterfactual interactions'. * * See the https://eips.ethereum.org/EIPS/eip-1014#motivation[EIP] for more * information. */ library Create2 { /** * @dev Deploys a contract using `CREATE2`. The address where the contract * will be deployed can be known in advance via {computeAddress}. * * The bytecode for a contract can be obtained from Solidity with * `type(contractName).creationCode`. * * Requirements: * * - `bytecode` must not be empty. * - `salt` must have not been used for `bytecode` already. * - the factory must have a balance of at least `amount`. * - if `amount` is non-zero, `bytecode` must have a `payable` constructor. */ function deploy( uint256 amount, bytes32 salt, bytes memory bytecode ) internal returns (address) { address addr; require(address(this).balance >= amount, "Create2: insufficient balance"); require(bytecode.length != 0, "Create2: bytecode length is zero"); assembly { addr := create2(amount, add(bytecode, 0x20), mload(bytecode), salt) } require(addr != address(0), "Create2: Failed on deploy"); return addr; } /** * @dev Returns the address where a contract will be stored if deployed via {deploy}. Any change in the * `bytecodeHash` or `salt` will result in a new destination address. */ function computeAddress(bytes32 salt, bytes32 bytecodeHash) internal view returns (address) { return computeAddress(salt, bytecodeHash, address(this)); } /** * @dev Returns the address where a contract will be stored if deployed via {deploy} from a contract located at * `deployer`. If `deployer` is this contract's address, returns the same value as {computeAddress}. */ function computeAddress( bytes32 salt, bytes32 bytecodeHash, address deployer ) internal pure returns (address) { bytes32 _data = keccak256(abi.encodePacked(bytes1(0xff), deployer, salt, bytecodeHash)); return address(uint160(uint256(_data))); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; interface IControlDeployer { /// @dev Emitted when an instance of `ProtocolControl` is deployed. event DeployedControl(address indexed registry, address indexed deployer, address indexed control); /// @dev Deploys an instance of `ProtocolControl` function deployControl( uint256 nonce, address deployer, string memory uri ) external returns (address); }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol"; /* * @dev Minimal forwarder for GSNv2 */ contract Forwarder is EIP712 { using ECDSA for bytes32; struct ForwardRequest { address from; address to; uint256 value; uint256 gas; uint256 nonce; bytes data; } bytes32 private constant TYPEHASH = keccak256("ForwardRequest(address from,address to,uint256 value,uint256 gas,uint256 nonce,bytes data)"); mapping(address => uint256) private _nonces; constructor() EIP712("GSNv2 Forwarder", "0.0.1") {} function getNonce(address from) public view returns (uint256) { return _nonces[from]; } function verify(ForwardRequest calldata req, bytes calldata signature) public view returns (bool) { address signer = _hashTypedDataV4( keccak256(abi.encode(TYPEHASH, req.from, req.to, req.value, req.gas, req.nonce, keccak256(req.data))) ).recover(signature); return _nonces[req.from] == req.nonce && signer == req.from; } function execute(ForwardRequest calldata req, bytes calldata signature) public payable returns (bool, bytes memory) { require(verify(req, signature), "MinimalForwarder: signature does not match request"); _nonces[req.from] = req.nonce + 1; // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory result) = req.to.call{ gas: req.gas, value: req.value }( abi.encodePacked(req.data, req.from) ); if (!success) { // Next 5 lines from https://ethereum.stackexchange.com/a/83577 if (result.length < 68) revert("Transaction reverted silently"); assembly { result := add(result, 0x04) } revert(abi.decode(result, (string))); } // Check gas: https://ronan.eth.link/blog/ethereum-gas-dangers/ assert(gasleft() > req.gas / 63); return (success, result); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return tryRecover(hash, r, vs); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s; uint8 v; assembly { s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) v := add(shr(255, vs), 27) } return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol) pragma solidity ^0.8.0; import "./ECDSA.sol"; /** * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data. * * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible, * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding * they need in their contracts using a combination of `abi.encode` and `keccak256`. * * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA * ({_hashTypedDataV4}). * * The implementation of the domain separator was designed to be as efficient as possible while still properly updating * the chain id to protect against replay attacks on an eventual fork of the chain. * * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask]. * * _Available since v3.4._ */ abstract contract EIP712 { /* solhint-disable var-name-mixedcase */ // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to // invalidate the cached domain separator if the chain id changes. bytes32 private immutable _CACHED_DOMAIN_SEPARATOR; uint256 private immutable _CACHED_CHAIN_ID; address private immutable _CACHED_THIS; bytes32 private immutable _HASHED_NAME; bytes32 private immutable _HASHED_VERSION; bytes32 private immutable _TYPE_HASH; /* solhint-enable var-name-mixedcase */ /** * @dev Initializes the domain separator and parameter caches. * * The meaning of `name` and `version` is specified in * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]: * * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol. * - `version`: the current major version of the signing domain. * * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart * contract upgrade]. */ constructor(string memory name, string memory version) { bytes32 hashedName = keccak256(bytes(name)); bytes32 hashedVersion = keccak256(bytes(version)); bytes32 typeHash = keccak256( "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)" ); _HASHED_NAME = hashedName; _HASHED_VERSION = hashedVersion; _CACHED_CHAIN_ID = block.chainid; _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion); _CACHED_THIS = address(this); _TYPE_HASH = typeHash; } /** * @dev Returns the domain separator for the current chain. */ function _domainSeparatorV4() internal view returns (bytes32) { if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) { return _CACHED_DOMAIN_SEPARATOR; } else { return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION); } } function _buildDomainSeparator( bytes32 typeHash, bytes32 nameHash, bytes32 versionHash ) private view returns (bytes32) { return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this))); } /** * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this * function returns the hash of the fully encoded EIP712 message for this domain. * * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example: * * ```solidity * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode( * keccak256("Mail(address to,string contents)"), * mailTo, * keccak256(bytes(mailContents)) * ))); * address signer = ECDSA.recover(digest, signature); * ``` */ function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) { return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/utils/Context.sol"; /** * Changelog: * 1. Remove add payees and shares in the constructor, so inherited class is responsible for adding. * 2. Change _addPayee(...) visibility to internal. DANGEROUS: Make sure it is not called outside from constructor * initialization. * 3. Add distribute(...) to distribute all owed amount to all payees. * 4. Add payeeCount() view to returns the number of payees. */ /** * @title PaymentSplitter * @dev This contract allows to split Ether payments among a group of accounts. The sender does not need to be aware * that the Ether will be split in this way, since it is handled transparently by the contract. * * The split can be in equal parts or in any other arbitrary proportion. The way this is specified is by assigning each * account to a number of shares. Of all the Ether that this contract receives, each account will then be able to claim * an amount proportional to the percentage of total shares they were assigned. * * `PaymentSplitter` follows a _pull payment_ model. This means that payments are not automatically forwarded to the * accounts but kept in this contract, and the actual transfer is triggered as a separate step by calling the {release} * function. * * NOTE: This contract assumes that ERC20 tokens will behave similarly to native tokens (Ether). Rebasing tokens, and * tokens that apply fees during transfers, are likely to not be supported as expected. If in doubt, we encourage you * to run tests before sending real value to this contract. */ contract PaymentSplitter is Context { event PayeeAdded(address account, uint256 shares); event PaymentReleased(address to, uint256 amount); event ERC20PaymentReleased(IERC20 indexed token, address to, uint256 amount); event PaymentReceived(address from, uint256 amount); uint256 private _totalShares; uint256 private _totalReleased; mapping(address => uint256) private _shares; mapping(address => uint256) private _released; address[] private _payees; mapping(IERC20 => uint256) private _erc20TotalReleased; mapping(IERC20 => mapping(address => uint256)) private _erc20Released; /** * @dev Creates an instance of `PaymentSplitter` where each account in `payees` is assigned the number of shares at * the matching position in the `shares` array. * * All addresses in `payees` must be non-zero. Both arrays must have the same non-zero length, and there must be no * duplicates in `payees`. */ constructor() payable {} /** * @dev The Ether received will be logged with {PaymentReceived} events. Note that these events are not fully * reliable: it's possible for a contract to receive Ether without triggering this function. This only affects the * reliability of the events, and not the actual splitting of Ether. * * To learn more about this see the Solidity documentation for * https://solidity.readthedocs.io/en/latest/contracts.html#fallback-function[fallback * functions]. */ receive() external payable virtual { emit PaymentReceived(_msgSender(), msg.value); } /** * @dev Getter for the total shares held by payees. */ function totalShares() public view returns (uint256) { return _totalShares; } /** * @dev Getter for the total amount of Ether already released. */ function totalReleased() public view returns (uint256) { return _totalReleased; } /** * @dev Getter for the total amount of `token` already released. `token` should be the address of an IERC20 * contract. */ function totalReleased(IERC20 token) public view returns (uint256) { return _erc20TotalReleased[token]; } /** * @dev Getter for the amount of shares held by an account. */ function shares(address account) public view returns (uint256) { return _shares[account]; } /** * @dev Getter for the amount of Ether already released to a payee. */ function released(address account) public view returns (uint256) { return _released[account]; } /** * @dev Getter for the amount of `token` tokens already released to a payee. `token` should be the address of an * IERC20 contract. */ function released(IERC20 token, address account) public view returns (uint256) { return _erc20Released[token][account]; } /** * @dev Getter for the address of the payee number `index`. */ function payee(uint256 index) public view returns (address) { return _payees[index]; } /** * @dev Getter for getting the number of payee */ function payeeCount() public view returns (uint256) { return _payees.length; } /** * @dev Triggers a transfer to `account` of the amount of Ether they are owed, according to their percentage of the * total shares and their previous withdrawals. */ function release(address payable account) public virtual { require(_shares[account] > 0, "PaymentSplitter: account has no shares"); uint256 totalReceived = address(this).balance + totalReleased(); uint256 payment = _pendingPayment(account, totalReceived, released(account)); require(payment != 0, "PaymentSplitter: account is not due payment"); _released[account] += payment; _totalReleased += payment; Address.sendValue(account, payment); emit PaymentReleased(account, payment); } /** * @dev Triggers a transfer to `account` of the amount of `token` tokens they are owed, according to their * percentage of the total shares and their previous withdrawals. `token` must be the address of an IERC20 * contract. */ function release(IERC20 token, address account) public virtual { require(_shares[account] > 0, "PaymentSplitter: account has no shares"); uint256 totalReceived = token.balanceOf(address(this)) + totalReleased(token); uint256 payment = _pendingPayment(account, totalReceived, released(token, account)); require(payment != 0, "PaymentSplitter: account is not due payment"); _erc20Released[token][account] += payment; _erc20TotalReleased[token] += payment; SafeERC20.safeTransfer(token, account, payment); emit ERC20PaymentReleased(token, account, payment); } /** * @dev Release the owed amount of token to all of the payees. */ function distribute() public virtual { for (uint256 i = 0; i < _payees.length; i++) { release(payable(_payees[i])); } } /** * @dev Release owed amount of the `token` to all of the payees. */ function distribute(IERC20 token) public virtual { for (uint256 i = 0; i < _payees.length; i++) { release(token, _payees[i]); } } /** * @dev internal logic for computing the pending payment of an `account` given the token historical balances and * already released amounts. */ function _pendingPayment( address account, uint256 totalReceived, uint256 alreadyReleased ) private view returns (uint256) { return (totalReceived * _shares[account]) / _totalShares - alreadyReleased; } /** * @dev Add a new payee to the contract. * @param account The address of the payee to add. * @param shares_ The number of shares owned by the payee. */ function _addPayee(address account, uint256 shares_) internal { require(account != address(0), "PaymentSplitter: account is the zero address"); require(shares_ > 0, "PaymentSplitter: shares are 0"); require(_shares[account] == 0, "PaymentSplitter: account already has shares"); _payees.push(account); _shares[account] = shares_; _totalShares = _totalShares + shares_; emit PayeeAdded(account, shares_); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../../../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: MIT // OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol) pragma solidity ^0.8.0; import "../utils/introspection/IERC165.sol";
{ "metadata": { "bytecodeHash": "none" }, "optimizer": { "enabled": true, "runs": 800 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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ILazyMintERC721.ClaimCondition[]","name":"_conditions","type":"tuple[]"}],"name":"updateClaimConditions","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : _name (string): The Blerginning
Arg [1] : _symbol (string): BLERG
Arg [2] : _contractURI (string): ipfs://QmUukZQasgM64y2F1YKm7zGJbdyLn6zDUz8whcGMH6Ma6q/0
Arg [3] : _controlCenter (address): 0x7669772a0B52c89aC1d3F8DBCeD801F4e5fA1072
Arg [4] : _trustedForwarder (address): 0xc82BbE41f2cF04e3a8efA18F7032BDD7f6d98a81
Arg [5] : _nativeTokenWrapper (address): 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2
Arg [6] : _saleRecipient (address): 0x9D85109C44c9dD1cA7C540c92C671b79e4917414
Arg [7] : _royaltyBps (uint128): 500
Arg [8] : _feeBps (uint128): 0
-----Encoded View---------------
16 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000120
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000160
Arg [2] : 00000000000000000000000000000000000000000000000000000000000001a0
Arg [3] : 0000000000000000000000007669772a0b52c89ac1d3f8dbced801f4e5fa1072
Arg [4] : 000000000000000000000000c82bbe41f2cf04e3a8efa18f7032bdd7f6d98a81
Arg [5] : 000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2
Arg [6] : 0000000000000000000000009d85109c44c9dd1ca7c540c92c671b79e4917414
Arg [7] : 00000000000000000000000000000000000000000000000000000000000001f4
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [9] : 000000000000000000000000000000000000000000000000000000000000000f
Arg [10] : 54686520426c657267696e6e696e670000000000000000000000000000000000
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [12] : 424c455247000000000000000000000000000000000000000000000000000000
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000037
Arg [14] : 697066733a2f2f516d55756b5a516173674d363479324631594b6d377a474a62
Arg [15] : 64794c6e367a44557a38776863474d48364d6136712f30000000000000000000
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A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.