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Minimal Proxy Contract for 0x4e1cc2fed80fa764e05eaedb807a9c2fc85e1fd9
Contract Name:
DCNTSeries
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity ^0.8.0; import '@openzeppelin/contracts/proxy/utils/Initializable.sol'; import '@openzeppelin/contracts/access/Ownable.sol'; import '@openzeppelin/contracts/access/AccessControl.sol'; import '@openzeppelin/contracts/utils/cryptography/MerkleProof.sol'; import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol"; import './interfaces/IDCNTSeries.sol'; import './interfaces/IFeeManager.sol'; import './extensions/ERC1155Hooks.sol'; import './utils/Splits.sol'; import './utils/OperatorFilterer.sol'; import './utils/Pausable.sol'; import './interfaces/ITokenWithBalance.sol'; import './utils/Version.sol'; /** * @title DCNTSeries * @author Zev Nevo. Will Kantaros. * @dev An implementation of the ERC1155 multi-token standard. */ contract DCNTSeries is IDCNTSeries, ERC1155Hooks, Initializable, Ownable, AccessControl, Pausable, Splits, OperatorFilterer, Version(2) { /* * @dev The name of the ERC-1155 contract. */ string private _name; /* * @dev The symbol of the ERC-1155 contract. */ string private _symbol; /* * @dev The packed range of valid token IDs. */ uint256 private _packedTokenRange; /* * @dev The base URI used to generate the URI for individual tokens. */ string private _uri; /* * @dev The URI for the contract metadata. */ string private _contractURI; /* * @dev The royalty fee in basis points (1/100th of a percent). */ uint16 public royaltyBPS; /* * @dev The address that will receive payouts when withdrawing funds. * Use 0x0 to default to the contract owner. */ address public payoutAddress; /* * @dev Whether the tokens are soulbound and cannot be transferred. */ bool public isSoulbound; /* * @dev Whether the caps on token supplies are able to be increased. */ bool public hasAdjustableCaps; /** * @dev Mapping of token IDs to drop IDs. */ mapping(uint256 => uint256) public tokenDropIds; /** * @dev Mapping of drop IDs to drop configurations. */ mapping(uint256 => Drop) private _drops; /* * @dev Mapping of token ID to the total number of tokens in circulation for that ID. */ mapping(uint256 => uint256) public totalSupply; /* * @dev The address of the fee manager used to calculate minting fees and commissions. */ address public feeManager; /* * @dev The address of the ChainLink price feed oracle to convert native currency to USD. */ AggregatorV3Interface public currencyOracle; /** * @dev Checks whether the caller has the required minimum balance to pass through token gate. * @param tokenId The ID of the token to check. * @param isPresale A boolean indicating whether the sale type for is presale or primary sale. */ modifier verifyTokenGate(uint256 tokenId, bool isPresale) { _verifyTokenGate(tokenId, isPresale); _; } /** * @dev Checks whether the caller has the required minimum balance to pass through token gate. * @param tokenId The ID of the token to check. * @param isPresale A boolean indicating whether the sale type for is presale or primary sale. */ function _verifyTokenGate(uint tokenId, bool isPresale) internal { uint256 dropId = tokenDropIds[tokenId]; TokenGateConfig memory tokenGate = _drops[dropId].tokenGate; if ( tokenGate.tokenAddress != address(0) && ( tokenGate.saleType == SaleType.ALL || (isPresale && tokenGate.saleType == SaleType.PRESALE) || (!isPresale && tokenGate.saleType == SaleType.PRIMARY) ) ) { if ( ITokenWithBalance(tokenGate.tokenAddress).balanceOf(msg.sender) < tokenGate.minBalance ) { revert TokenGateDenied(); } } } /** * @dev Checks if a given token ID is within the valid range for this contract. * @param tokenId The token ID to check. */ modifier validTokenId(uint256 tokenId) { _checkValidTokenId(tokenId); _; } /** * @dev Checks if a given token ID is within the valid range for this contract. * @param tokenId The token ID to check. */ function _checkValidTokenId(uint256 tokenId) internal view { (uint128 startTokenId, uint128 endTokenId) = _getUnpackedTokenRange(); if ( startTokenId > tokenId || tokenId > endTokenId ) { revert NonexistentToken(); } } /** * @dev Restricts access to only addresses with the DEFAULT_ADMIN_ROLE. */ modifier onlyAdmin() { if ( ! hasRole(DEFAULT_ADMIN_ROLE, _msgSender()) ) { revert OnlyAdmin(); } _; } /** * @dev Initializes the contract with the specified parameters. * @param _owner The owner of the contract. * @param _config The configuration for the contract. * @param _defaultDrop The default drop configuration for all tokens. * @param _dropOverrides Optional mapping of custom drop configurations. */ function initialize( address _owner, SeriesConfig calldata _config, Drop calldata _defaultDrop, DropMap calldata _dropOverrides ) public initializer { _transferOwnership(_owner); _grantRole(DEFAULT_ADMIN_ROLE, _owner); _name = _config.name; _symbol = _config.symbol; _uri = _config.metadataURI; _contractURI = _config.contractURI; _setRoyaltyBPS(_config.royaltyBPS); payoutAddress = _config.payoutAddress; hasAdjustableCaps = _config.hasAdjustableCaps; isSoulbound = _config.isSoulbound; feeManager = _config.feeManager; currencyOracle = AggregatorV3Interface(_config.currencyOracle); _setPackedTokenRange(_config.startTokenId, _config.endTokenId); _drops[0] = _defaultDrop; _setDropMap(_dropOverrides); } /** * @dev Returns the name of the contract. */ function name() external view returns (string memory) { return _name; } /** * @dev Returns the symbol of the contract. */ function symbol() external view returns (string memory) { return _symbol; } /** * @dev Returns the URI for a given token ID. * A single URI is returned for all token types as defined in EIP-1155's token type ID substitution mechanism. * Clients should replace `{id}` with the actual token type ID when calling the function. * @dev unused @param tokenId ID of the token to retrieve the URI for. */ function uri(uint256) public view override(IDCNTSeries, ERC1155) returns (string memory) { return _uri; } /** * @dev Internal function to set the URI for all token IDs. * @param uri_ The URI for token all token IDs. */ function _setURI(string memory uri_) private { _uri = uri_; } /** * @dev Set the URI for all token IDs. * @param uri_ The URI for token all token IDs. */ function setURI(string memory uri_) external onlyAdmin { _uri = uri_; (uint128 startTokenId, uint128 endTokenId) = _getUnpackedTokenRange(); unchecked { for (uint256 i = startTokenId; i <= endTokenId; i++) { emit URI(_uri, i); } } } /** * @dev Returns the URI of the contract metadata. */ function contractURI() external view returns (string memory) { return _contractURI; } /** * @dev Sets the URI of the contract metadata. * @param contractURI_ The URI of the contract metadata. */ function setContractURI(string memory contractURI_) external onlyAdmin { _contractURI = contractURI_; } /** * @dev Returns the range of token IDs that are valid for this contract. * @return startTokenId The starting token ID for this contract. * @return endTokenId The ending token ID for this contract. */ function tokenRange() external view returns (uint128 startTokenId, uint128 endTokenId) { return _getUnpackedTokenRange(); } /** * @dev Sets the packed range of token IDs that are valid for this contract. * @param startTokenId The starting token ID for this contract. * @param endTokenId The ending token ID for this contract. */ function _setPackedTokenRange(uint128 startTokenId, uint128 endTokenId) internal { if ( startTokenId > endTokenId ) { revert InvalidTokenRange(); } _packedTokenRange = uint256(startTokenId) << 128 | uint256(endTokenId); } /** * @dev Returns the unpacked range of token IDs that are valid for this contract. * @return startTokenId The starting token ID for this contract. * @return endTokenId The ending token ID for this contract. */ function _getUnpackedTokenRange() internal view returns (uint128, uint128) { uint128 endTokenId = uint128(_packedTokenRange & type(uint128).max); uint128 startTokenId = uint128(_packedTokenRange >> 128); return (startTokenId, endTokenId); } /** * @dev Sets the drop configurations for the specified token IDs. * @param dropMap A parameter object mapping token IDs, drop IDs, and drops. */ function _setDropMap(DropMap calldata dropMap) internal { uint256 numberOfTokens = dropMap.tokenIds.length; uint256 numberOfDrops = dropMap.dropIds.length; if ( numberOfTokens != dropMap.tokenIdDropIds.length || numberOfDrops != dropMap.drops.length ) { revert ArrayLengthMismatch(); } unchecked { for (uint256 i = 0; i < numberOfTokens; i++) { uint256 tokenId = dropMap.tokenIds[i]; uint256 dropId = dropMap.tokenIdDropIds[i]; _checkValidTokenId(tokenId); _checkValidTokenId(dropId); tokenDropIds[tokenId] = dropId; } for (uint256 i = 0; i < numberOfDrops; i++) { uint256 dropId = dropMap.dropIds[i]; Drop calldata drop = dropMap.drops[i]; _checkValidTokenId(dropId); _drops[dropId] = drop; } } } /** * @dev Returns the drop configuration for the specified token ID. * @param tokenId The ID of the token to retrieve the drop configuration for. * @return drop The drop configuration mapped to the specified token ID. */ function tokenDrop(uint128 tokenId) external view returns (Drop memory) { return _drops[tokenDropIds[tokenId]]; } /** * @dev Creates new tokens and updates drop configurations for specified token IDs. * @param newTokens Optional number of new token IDs to add to the existing token range. * @param dropMap Optional parameter object mapping token IDs, drop IDs, and drops. */ function setTokenDrops(uint128 newTokens, DropMap calldata dropMap) external onlyAdmin { if ( newTokens > 0 ) { (uint128 startTokenId, uint128 endTokenId) = _getUnpackedTokenRange(); _setPackedTokenRange(startTokenId, endTokenId + newTokens); } uint256 numberOfTokens = dropMap.tokenIds.length; uint256 numberOfDrops = dropMap.dropIds.length; if ( numberOfTokens != dropMap.tokenIdDropIds.length || numberOfDrops != dropMap.drops.length ) { revert ArrayLengthMismatch(); } unchecked { for (uint256 i = 0; i < numberOfTokens; i++) { uint256 tokenId = dropMap.tokenIds[i]; uint256 dropId = dropMap.tokenIdDropIds[i]; _checkValidTokenId(tokenId); _checkValidTokenId(dropId); if ( totalSupply[tokenId] > _drops[dropId].maxTokens ) { revert CannotDecreaseCap(); } tokenDropIds[tokenId] = dropId; } for (uint256 i = 0; i < numberOfDrops; i++) { uint256 dropId = dropMap.dropIds[i]; if ( dropId != 0 ) { _checkValidTokenId(dropId); } Drop calldata _drop = dropMap.drops[i]; Drop storage drop = _drops[dropId]; if ( drop.maxTokens != _drop.maxTokens ) { if ( ! hasAdjustableCaps ) { revert CapsAreLocked(); } if ( _drop.maxTokens < drop.maxTokens ) { revert CannotDecreaseCap(); } } drop.maxTokens = _drop.maxTokens; drop.tokenPrice = _drop.tokenPrice; drop.maxTokensPerOwner = _drop.maxTokensPerOwner; drop.presaleMerkleRoot = _drop.presaleMerkleRoot; drop.presaleStart = _drop.presaleStart; drop.presaleEnd = _drop.presaleEnd; drop.saleStart = _drop.saleStart; drop.saleEnd = _drop.saleEnd; } } } /** * @dev Gets the current price for the specified token. If a currency oracle is set, * the price is calculated in native currency using the oracle exchange rate. * @param tokenId The ID of the token to get the price for. * @return The current price of the specified token. */ function tokenPrice(uint256 tokenId) public view validTokenId(tokenId) returns (uint256) { return _tokenPrice(tokenId); } /** * @dev Internal function to get the current price for the specified token. If a currency oracle is set, * the price is calculated in native currency using the oracle exchange rate. * @param tokenId The ID of the token to get the price for. * @return The current price of the specified token. */ function _tokenPrice(uint256 tokenId) internal view returns (uint256) { if ( address(currencyOracle) != address(0) ) { uint256 decimals = currencyOracle.decimals(); ( /* uint80 roundID */, int price, /*uint startedAt*/, /*uint timeStamp*/, /*uint80 answeredInRound*/ ) = currencyOracle.latestRoundData(); uint256 exchangeRate = decimals <= 18 ? uint256(price) * (10 ** (18 - decimals)) : uint256(price) / (10 ** (decimals - 18)); return uint256(_drops[tokenDropIds[tokenId]].tokenPrice) * (10 ** 18) / exchangeRate; } return _drops[tokenDropIds[tokenId]].tokenPrice; } /** * @dev Gets the current minting fee for the specified token. * @param tokenId The ID of the token to get the minting fee for. * @param quantity The quantity of tokens used to calculate the minting fee. * @return fee The current fee for minting the specified token. */ function mintFee(uint256 tokenId, uint256 quantity) external view validTokenId(tokenId) returns (uint256 fee) { if ( feeManager != address(0) ) { (fee, ) = IFeeManager(feeManager).calculateFees(tokenPrice(tokenId), quantity); } } /** * @dev Mints a specified number of tokens to a specified address. * @param tokenId The ID of the token to mint. * @param to The address to which the minted tokens will be sent. * @param quantity The quantity of tokens to mint. */ function mint(uint256 tokenId, address to, uint256 quantity) external payable verifyTokenGate(tokenId, false) whenNotPaused { _checkMintable(to, tokenId, quantity); uint256 price = tokenPrice(tokenId); uint256 fee; uint256 commission; if ( feeManager != address(0) ) { (fee, commission) = IFeeManager(feeManager).calculateFees(price, quantity); } uint256 totalPrice = (price * quantity) + fee; if ( msg.value < totalPrice ) { revert InsufficientFunds(); } _mint(to, tokenId, quantity, ''); totalSupply[tokenId] += quantity; _transferFees(fee + commission); _transferRefund(msg.value - totalPrice); } /** * @dev Mints a batch of tokens to a specified address. * @param tokenIds The IDs of the tokens to mint. * @param to The address to which the minted tokens will be sent. * @param quantities The quantities to mint of each token. */ function mintBatch( address to, uint256[] calldata tokenIds, uint256[] calldata quantities ) external payable whenNotPaused { uint256 numberOfTokens = tokenIds.length; uint256 tokenId; uint256 quantity; uint256 price; uint256 fee; uint256 commission; uint256 totalPrice; uint256 totalFee; uint256 totalCommission; unchecked { for (uint256 i = 0; i < numberOfTokens; i++) { tokenId = tokenIds[i]; quantity = quantities[i]; _verifyTokenGate(tokenId, false); _checkMintable(to, tokenId, quantity); price = _tokenPrice(tokenId); if ( feeManager != address(0) ) { (fee, commission) = IFeeManager(feeManager).calculateFees(price, quantity); totalFee += fee; totalCommission += commission; } totalPrice += (price * quantity) + fee; totalSupply[tokenId] += quantity; } } if ( msg.value < totalPrice ) { revert InsufficientFunds(); } _batchMint(to, tokenIds, quantities, ''); _transferFees(totalFee + totalCommission); _transferRefund(msg.value - totalPrice); } /** * @dev Internal function to check if a drop can be minted. * @param to The address to which the minted tokens will be sent. * @param tokenId The ID of the token to mint. * @param quantity The quantity of tokens to mint. */ function _checkMintable( address to, uint256 tokenId, uint256 quantity ) internal view { _checkValidTokenId(tokenId); uint256 dropId = tokenDropIds[tokenId]; Drop memory drop = _drops[dropId]; uint256 supply = totalSupply[tokenId]; if ( block.timestamp < drop.saleStart || block.timestamp > drop.saleEnd ) { revert SaleNotActive(); } if ( supply + quantity > drop.maxTokens ) { revert MintExceedsMaxSupply(); } if ( balanceOf[to][tokenId] + quantity > drop.maxTokensPerOwner ) { revert MintExceedsMaxTokensPerOwner(); } } /** * @dev Internal function to transfer fees to the fee manager. * @param fees The amount of funds to transfer. */ function _transferFees(uint256 fees) internal { if ( fees > 0 ) { (bool success, ) = payable(IFeeManager(feeManager).recipient()).call{value: fees}(""); if ( ! success ) { revert FeeTransferFailed(); } } } /** * @dev Internal function to transfer excess funds to the caller. * @param refund The amount of funds to transfer. */ function _transferRefund(uint256 refund) internal { if ( refund > 0 ) { (bool success, ) = payable(msg.sender).call{value: refund}(""); if ( ! success ) { revert RefundFailed(); } } } /** * @dev Burns a specified quantity of tokens from the caller's account. * @param tokenId The ID of the token to burn. * @param quantity The quantity of tokens to burn. */ function burn(uint256 tokenId, uint256 quantity) external { if ( balanceOf[msg.sender][tokenId] < quantity ) { revert BurnExceedsOwnedTokens(); } _burn(msg.sender, tokenId, quantity); totalSupply[tokenId] -= quantity; } /** * @dev Mints specified tokens to multiple recipients as part of an airdrop. * @param tokenIds The IDs of the tokens to mint. * @param recipients The list of addresses to receive the minted tokens. */ function mintAirdrop(uint256[] calldata tokenIds, address[] calldata recipients) external onlyAdmin { uint256 numberOfTokens = tokenIds.length; unchecked { for (uint i = 0; i < numberOfTokens; i++) { _mintAirdrop(tokenIds[i], recipients); } } } /** * @dev Internal function to mint a specified token to multiple recipients as part of an airdrop. * @param tokenId The ID of the token to mint. * @param recipients The list of addresses to receive the minted tokens. */ function _mintAirdrop(uint256 tokenId, address[] memory recipients) internal { _checkValidTokenId(tokenId); uint256 numberOfRecipients = recipients.length; if ( totalSupply[tokenId] + numberOfRecipients > _drops[tokenDropIds[tokenId]].maxTokens ) { revert AirdropExceedsMaxSupply(); } unchecked { for (uint i = 0; i < numberOfRecipients; i++) { address to = recipients[i]; _mint(to, tokenId, 1, ''); } totalSupply[tokenId] += numberOfRecipients; } } /** * @dev Mints a specified number of tokens to the presale buyer address. * @param to The address to which the minted tokens will be sent. * @param tokenId The ID of the token to mint. * @param quantity The quantity of tokens to mint. * @param maxQuantity The maximum quantity of tokens that can be minted. * @param pricePerToken The price per token in wei. * @param merkleProof The Merkle proof verifying that the presale buyer is eligible to mint tokens. */ function mintPresale( address to, uint256 tokenId, uint256 quantity, uint256 maxQuantity, uint256 pricePerToken, bytes32[] calldata merkleProof ) external payable verifyTokenGate(tokenId, true) validTokenId(tokenId) whenNotPaused { _checkPresaleMintable( to, tokenId, quantity, maxQuantity, pricePerToken, merkleProof ); uint256 fee; uint256 commission; if ( feeManager != address(0) ) { (fee, commission) = IFeeManager(feeManager).calculateFees(pricePerToken, quantity); } uint256 totalPrice = (pricePerToken * quantity) + fee; if ( msg.value < totalPrice ) { revert InsufficientFunds(); } uint256 ownerBalance = balanceOf[to][tokenId]; if ( ownerBalance + quantity > maxQuantity ) { revert MintExceedsMaxTokensPerOwner(); } _mint(to, tokenId, quantity, ''); _transferFees(fee + commission); _transferRefund(msg.value - totalPrice); } /** * @dev Internal function to check if a drop can be presale minted. * @param tokenId The ID of the token to mint. * @param quantity The quantity of tokens to mint. * @param maxQuantity The maximum quantity of tokens that can be minted. * @param pricePerToken The price per token in wei. * @param merkleProof The Merkle proof verifying that the presale buyer is eligible to mint tokens. */ function _checkPresaleMintable( address to, uint256 tokenId, uint256 quantity, uint256 maxQuantity, uint256 pricePerToken, bytes32[] calldata merkleProof ) internal view { Drop memory drop = _drops[tokenDropIds[tokenId]]; if ( block.timestamp < drop.presaleStart || block.timestamp > drop.presaleEnd ) { revert PresaleNotActive(); } if ( totalSupply[tokenId] + quantity > drop.maxTokens ) { revert MintExceedsMaxSupply(); } bool presaleVerification = MerkleProof.verify( merkleProof, drop.presaleMerkleRoot, keccak256( abi.encodePacked( to, maxQuantity, pricePerToken ) ) ); if ( ! presaleVerification ) { revert PresaleVerificationFailed(); } } /** * @dev Pauses public minting. */ function pause() external whenNotPaused onlyAdmin { _pause(); } /** * @dev Unpauses public minting. */ function unpause() external whenPaused onlyAdmin { _unpause(); } /** * @dev Sets the payout address to the specified address. * Use 0x0 to default to the contract owner. * @param _payoutAddress The address to set as the payout address. */ function setPayoutAddress(address _payoutAddress) external onlyAdmin { payoutAddress = _payoutAddress; } /** * @dev Withdraws the balance of the contract to the payout address or the contract owner. */ function withdraw() external { if ( splitWallet != address(0) ) { revert SplitsAreActive(); } address to = payoutAddress != address(0) ? payoutAddress : owner(); (bool success, ) = payable(to).call{value: address(this).balance}(""); if ( ! success ) { revert WithdrawFailed(); } } /** * @dev Internal function to set the royalty fee. * @param _royaltyBPS The royalty fee in basis points. (1/100th of a percent) */ function _setRoyaltyBPS(uint16 _royaltyBPS) internal { if ( _royaltyBPS > 100_00 ) { revert InvalidBPS(); } royaltyBPS = _royaltyBPS; } /** * @dev Sets the royalty fee (ERC-2981: NFT Royalty Standard). * @param _royaltyBPS The royalty fee in basis points. (1/100th of a percent) */ function setRoyaltyBPS(uint16 _royaltyBPS) external onlyAdmin { _setRoyaltyBPS(_royaltyBPS); } /** * @dev Returns the royalty recipient and amount for a given sale price. * @param tokenId The ID of the token being sold. * @param salePrice The sale price of the token. * @return receiver The address of the royalty recipient. * @return royaltyAmount The amount to be paid to the royalty recipient. */ function royaltyInfo(uint256 tokenId, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) { _checkValidTokenId(tokenId); if ( splitWallet != address(0) ) { receiver = splitWallet; } else if ( payoutAddress != address(0) ) { receiver = payoutAddress; } else { receiver = owner(); } uint256 royaltyPayment = (salePrice * royaltyBPS) / 100_00; return (receiver, royaltyPayment); } /** * @dev Returns true if the contract supports the given interface (ERC2981 or ERC1155), * as specified by interfaceId, false otherwise. * @param interfaceId The interface identifier, as specified in ERC-165. * @return True if the contract supports interfaceId, false otherwise. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IDCNTSeries, ERC1155, AccessControl) returns (bool) { return interfaceId == 0x2a55205a || // ERC165 interface ID for ERC2981. AccessControl.supportsInterface(interfaceId) || ERC1155.supportsInterface(interfaceId); } /** * @dev Updates the operator filter registry with the specified subscription. * @param enable If true, enables the operator filter, if false, disables it. * @param operatorFilter The address of the operator filter subscription. */ function updateOperatorFilter(bool enable, address operatorFilter) external onlyAdmin { address self = address(this); if ( ! operatorFilterRegistry.isRegistered(self) && enable ) { operatorFilterRegistry.registerAndSubscribe(self, operatorFilter); } else if ( enable ) { operatorFilterRegistry.subscribe(self, operatorFilter); } else { operatorFilterRegistry.unsubscribe(self, false); operatorFilterRegistry.unregister(self); } } /** * @dev Hook that is called before any token transfer, including minting and burning. * It checks if the operator is allowed and enforces the "soulbound" rule if enabled. * @param from The address from which the tokens are being transferred (or 0x0 if minting). * @param to The address to which the tokens are being transferred (or 0x0 if burning). * @dev unused @param ids An array containing the identifiers of the tokens being transferred. * @dev unused @param amounts An array containing the amounts of tokens being transferred. */ function _beforeTokenTransfers( address from, address to, uint256[] memory, uint256[] memory ) internal virtual override onlyAllowedOperator(from) { if ( isSoulbound && from != address(0) && to != address(0) ) { revert CannotTransferSoulbound(); } } /** * @dev Sets or revokes approval for a third party ("operator") to manage all of the caller's tokens. * @param operator The address of the operator to grant or revoke approval. * @param approved True to grant approval, false to revoke it. */ function setApprovalForAll( address operator, bool approved ) public virtual override(IDCNTSeries, ERC1155) onlyAllowedOperatorApproval(operator) { super.setApprovalForAll(operator, approved); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface AggregatorV3Interface { function decimals() external view returns (uint8); function description() external view returns (string memory); function version() external view returns (uint256); function getRoundData(uint80 _roundId) external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function latestRoundData() external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (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})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view virtual override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `_msgSender()` is missing `role`. * Overriding this function changes the behavior of the {onlyRole} modifier. * * Format of the revert message is described in {_checkRole}. * * _Available since v4.6._ */ function _checkRole(bytes32 role) internal view virtual { _checkRole(role, _msgSender()); } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view virtual { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(account), " 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 virtual 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. * * May emit a {RoleGranted} event. */ 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. * * May emit a {RoleRevoked} event. */ 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`. * * May emit a {RoleRevoked} event. */ 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. * * May emit a {RoleGranted} event. * * [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. * * May emit a {RoleGranted} event. */ 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. * * May emit a {RoleRevoked} event. */ 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 (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 (last updated v4.7.0) (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 Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; 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 proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ``` * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. * @custom:oz-retyped-from bool */ uint8 private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint8 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. * * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a * constructor. * * Emits an {Initialized} event. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!Address.isContract(address(this)) && _initialized == 1), "Initializable: contract is already initialized" ); _initialized = 1; if (isTopLevelCall) { _initializing = true; } _; if (isTopLevelCall) { _initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * A reinitializer may be used after the original initialization step. This is essential to configure modules that * are added through upgrades and that require initialization. * * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer` * cannot be nested. If one is invoked in the context of another, execution will revert. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. * * WARNING: setting the version to 255 will prevent any future reinitialization. * * Emits an {Initialized} event. */ modifier reinitializer(uint8 version) { require(!_initializing && _initialized < version, "Initializable: contract is already initialized"); _initialized = version; _initializing = true; _; _initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. * * Emits an {Initialized} event the first time it is successfully executed. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized < type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } /** * @dev Internal function that returns the initialized version. Returns `_initialized` */ function _getInitializedVersion() internal view returns (uint8) { return _initialized; } /** * @dev Internal function that returns the initialized version. Returns `_initializing` */ function _isInitializing() internal view returns (bool) { return _initializing; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @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 (last updated v4.8.0) (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /** * @dev These functions deal with verification of Merkle Tree proofs. * * The tree and the proofs can be generated using our * https://github.com/OpenZeppelin/merkle-tree[JavaScript library]. * You will find a quickstart guide in the readme. * * WARNING: You should avoid using leaf values that are 64 bytes long prior to * hashing, or use a hash function other than keccak256 for hashing leaves. * This is because the concatenation of a sorted pair of internal nodes in * the merkle tree could be reinterpreted as a leaf value. * OpenZeppelin's JavaScript library generates merkle trees that are safe * against this attack out of the box. */ 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 Calldata version of {verify} * * _Available since v4.7._ */ function verifyCalldata( bytes32[] calldata proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProofCalldata(proof, leaf) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merkle 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++) { computedHash = _hashPair(computedHash, proof[i]); } return computedHash; } /** * @dev Calldata version of {processProof} * * _Available since v4.7._ */ function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { computedHash = _hashPair(computedHash, proof[i]); } return computedHash; } /** * @dev Returns true if the `leaves` can be simultaneously proven to be a part of a merkle tree defined by * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}. * * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details. * * _Available since v4.7._ */ function multiProofVerify( bytes32[] memory proof, bool[] memory proofFlags, bytes32 root, bytes32[] memory leaves ) internal pure returns (bool) { return processMultiProof(proof, proofFlags, leaves) == root; } /** * @dev Calldata version of {multiProofVerify} * * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details. * * _Available since v4.7._ */ function multiProofVerifyCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32 root, bytes32[] memory leaves ) internal pure returns (bool) { return processMultiProofCalldata(proof, proofFlags, leaves) == root; } /** * @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction * proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another * leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false * respectively. * * CAUTION: Not all merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree * is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the * tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer). * * _Available since v4.7._ */ function processMultiProof( bytes32[] memory proof, bool[] memory proofFlags, bytes32[] memory leaves ) internal pure returns (bytes32 merkleRoot) { // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of // the merkle tree. uint256 leavesLen = leaves.length; uint256 totalHashes = proofFlags.length; // Check proof validity. require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof"); // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop". bytes32[] memory hashes = new bytes32[](totalHashes); uint256 leafPos = 0; uint256 hashPos = 0; uint256 proofPos = 0; // At each step, we compute the next hash using two values: // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we // get the next hash. // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the // `proof` array. for (uint256 i = 0; i < totalHashes; i++) { bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]; bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++]; hashes[i] = _hashPair(a, b); } if (totalHashes > 0) { return hashes[totalHashes - 1]; } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } /** * @dev Calldata version of {processMultiProof}. * * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details. * * _Available since v4.7._ */ function processMultiProofCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32[] memory leaves ) internal pure returns (bytes32 merkleRoot) { // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of // the merkle tree. uint256 leavesLen = leaves.length; uint256 totalHashes = proofFlags.length; // Check proof validity. require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof"); // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop". bytes32[] memory hashes = new bytes32[](totalHashes); uint256 leafPos = 0; uint256 hashPos = 0; uint256 proofPos = 0; // At each step, we compute the next hash using two values: // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we // get the next hash. // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the // `proof` array. for (uint256 i = 0; i < totalHashes; i++) { bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]; bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++]; hashes[i] = _hashPair(a, b); } if (totalHashes > 0) { return hashes[totalHashes - 1]; } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) { return a < b ? _efficientHash(a, b) : _efficientHash(b, a); } function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) { /// @solidity memory-safe-assembly assembly { mstore(0x00, a) mstore(0x20, b) value := keccak256(0x00, 0x40) } } }
// SPDX-License-Identifier: 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 (last updated v4.8.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10**64) { value /= 10**64; result += 64; } if (value >= 10**32) { value /= 10**32; result += 32; } if (value >= 10**16) { value /= 10**16; result += 16; } if (value >= 10**8) { value /= 10**8; result += 8; } if (value >= 10**4) { value /= 10**4; result += 4; } if (value >= 10**2) { value /= 10**2; result += 2; } if (value >= 10**1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/Math.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import 'solmate/src/tokens/ERC1155.sol'; abstract contract ERC1155Hooks is ERC1155 { function _beforeTokenTransfers( address from, address to, uint256[] memory ids, uint256[] memory amounts ) internal virtual {} function safeTransferFrom( address from, address to, uint256 id, uint256 amount, bytes calldata data ) public virtual override { _beforeTokenTransfers(from, to, _asSingletonArray(id), _asSingletonArray(amount)); super.safeTransferFrom(from, to, id, amount, data); } function safeBatchTransferFrom( address from, address to, uint256[] calldata ids, uint256[] calldata amounts, bytes calldata data ) public virtual override { _beforeTokenTransfers(from, to, ids, amounts); super.safeBatchTransferFrom(from, to, ids, amounts, data); } function _mint( address to, uint256 id, uint256 amount, bytes memory data ) internal virtual override { _beforeTokenTransfers(address(0), to, _asSingletonArray(id), _asSingletonArray(amount)); super._mint(to, id, amount, data); } function _batchMint( address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) internal virtual override { _beforeTokenTransfers(address(0), to, ids, amounts); super._batchMint(to, ids, amounts, data); } function _burn( address from, uint256 id, uint256 amount ) internal virtual override { _beforeTokenTransfers(msg.sender, address(0), _asSingletonArray(id), _asSingletonArray(amount)); super._burn(from, id, amount); } function _batchBurn( address from, uint256[] memory ids, uint256[] memory amounts ) internal virtual override { _beforeTokenTransfers(msg.sender, address(0), ids, amounts); super._batchBurn(from, ids, amounts); } function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) { uint256[] memory array = new uint256[](1); array[0] = element; return array; } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity ^0.8.0; import '../extensions/ERC1155Hooks.sol'; import '../storage/TokenGateConfig.sol'; /** * @title IDCNTSeries * @author Zev Nevo. Will Kantaros. * @dev An implementation of the ERC1155 multi-token standard. */ interface IDCNTSeries { /* * @dev A parameter object used to set the initial configuration of a token series. */ struct SeriesConfig { string name; string symbol; string contractURI; string metadataURI; uint128 startTokenId; uint128 endTokenId; uint16 royaltyBPS; address feeManager; address payoutAddress; address currencyOracle; bool isSoulbound; bool hasAdjustableCaps; } /* * @dev The configuration settings for individual tokens within the series */ struct Drop { uint32 maxTokens; // Slot 1: XXXX---------------------------- 4 bytes (max: 4,294,967,295) uint32 maxTokensPerOwner; // Slot 1: ----XXXX------------------------ 4 bytes (max: 4,294,967,295) uint32 presaleStart; // Slot 1: --------XXXX-------------------- 4 bytes (max: Feburary 7th, 2106) uint32 presaleEnd; // Slot 1: ------------XXXX---------------- 4 bytes (max: Feburary 7th, 2106) uint32 saleStart; // Slot 1: ----------------XXXX------------ 4 bytes (max: Feburary 7th, 2106) uint32 saleEnd; // Slot 1: --------------------XXXX-------- 4 bytes (max: Feburary 7th, 2106) uint96 tokenPrice; // Slot 2: XXXXXXXXXXXX-------------------- 12 bytes (max: 79,228,162,514 ETH) bytes32 presaleMerkleRoot; // Slot 3: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 32 bytes TokenGateConfig tokenGate; // Slot 4: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 32 bytes } /** * @dev A parameter object mapping token IDs, drop IDs, and drops. */ struct DropMap { uint256[] tokenIds; uint256[] tokenIdDropIds; uint256[] dropIds; Drop[] drops; } /* * @dev Only admins can perform this action. */ error OnlyAdmin(); /* * @dev The provided arrays have unequal lengths. */ error ArrayLengthMismatch(); /* * @dev The requested token does not exist. */ error NonexistentToken(); /* * @dev The provided token range is invalid. */ error InvalidTokenRange(); /* * @dev The token supply caps are locked and cannot be adjusted. */ error CapsAreLocked(); /* * @dev The token supply cap cannot be decreased. */ error CannotDecreaseCap(); /* * @dev Insufficient minimum balance for the token gate. */ error TokenGateDenied(); /* * @dev Sales for this drop are not currently active. */ error SaleNotActive(); /* * @dev The provided funds are insufficient to complete this transaction. */ error InsufficientFunds(); /* * @dev The requested mint exceeds the maximum supply for this drop. */ error MintExceedsMaxSupply(); /* * @dev The requested mint exceeds the maximum tokens per owner for this drop. */ error MintExceedsMaxTokensPerOwner(); /* * @dev The requested airdrop exceeds the maximum supply for this drop. */ error AirdropExceedsMaxSupply(); /* * @dev The requested burn exceeds the number of owned tokens. */ error BurnExceedsOwnedTokens(); /* * @dev The presale is not currently active. */ error PresaleNotActive(); /* * @dev Verification for the presale failed. */ error PresaleVerificationFailed(); /* * @dev Soulbound tokens cannot be transferred. */ error CannotTransferSoulbound(); /* * @dev Basis points may not exceed 100_00 (100 percent) */ error InvalidBPS(); /* * @dev Splits are currently active and withdrawals are disabled. */ error SplitsAreActive(); /* * @dev Transfer of fees failed. */ error FeeTransferFailed(); /* * @dev Refund of excess funds failed. */ error RefundFailed(); /* * @dev Withdrawal of funds failed. */ error WithdrawFailed(); /** * @dev Initializes the contract with the specified parameters. * param _owner The owner of the contract. * param _config The configuration for the contract. * param _drops The drop configurations for the initial tokens. */ function initialize( address _owner, SeriesConfig calldata _config, Drop calldata _defaultDrop, DropMap calldata _dropOverrides ) external; /** * @dev Returns the name of the contract. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the contract. */ function symbol() external view returns (string memory); /** * @dev Returns the URI for a given token ID. * A single URI is returned for all token types as defined in EIP-1155's token type ID substitution mechanism. * Clients should replace `{id}` with the actual token type ID when calling the function. * @dev unused @param tokenId ID of the token to retrieve the URI for. */ function uri(uint256) external view returns (string memory); /** * @dev Set the URI for all token IDs. * @param uri_ The URI for token all token IDs. */ function setURI(string memory uri_) external; /** * @dev Returns the URI of the contract metadata. */ function contractURI() external view returns (string memory); /** * @dev Sets the URI of the contract metadata. * @param contractURI_ The URI of the contract metadata. */ function setContractURI(string memory contractURI_) external; /** * @dev Returns the range of token IDs that are valid for this contract. * @return startTokenId The starting token ID for this contract. * @return endTokenId The ending token ID for this contract. */ function tokenRange() external view returns (uint128 startTokenId, uint128 endTokenId); /** * @dev Returns the drop configuration for the specified token ID. * @param tokenId The ID of the token to retrieve the drop configuration for. * @return drop The drop configuration mapped to the specified token ID. */ function tokenDrop(uint128 tokenId) external view returns (Drop memory); /** * @dev Creates new tokens and updates drop configurations for specified token IDs. * @param newTokens Optional number of new token IDs to add to the existing token range. * @param dropMap Optional parameter object mapping token IDs, drop IDs, and drops. */ function setTokenDrops(uint128 newTokens, DropMap calldata dropMap) external; /** * @dev Gets the current price for the specified token. If a currency oracle is set, * the price is calculated in native currency using the oracle exchange rate. * @param tokenId The ID of the token to get the price for. * @return The current price of the specified token. */ function tokenPrice(uint256 tokenId) external view returns (uint256); /** * @dev Gets the current minting fee for the specified token. * @param tokenId The ID of the token to get the minting fee for. * @param quantity The quantity of tokens used to calculate the minting fee. * @return The current fee for minting the specified token. */ function mintFee(uint256 tokenId, uint256 quantity) external view returns (uint256); /** * @dev Mints a specified number of tokens to a specified address. * @param tokenId The ID of the token to mint. * @param to The address to which the minted tokens will be sent. * @param quantity The quantity of tokens to mint. */ function mint(uint256 tokenId, address to, uint256 quantity) external payable; /** * @dev Mints a batch of tokens to a specified address. * @param tokenIds The IDs of the tokens to mint. * @param to The address to which the minted tokens will be sent. * @param quantities The quantities to mint of each token. */ function mintBatch( address to, uint256[] calldata tokenIds, uint256[] calldata quantities ) external payable; /** * @dev Burns a specified quantity of tokens from the caller's account. * @param tokenId The ID of the token to burn. * @param quantity The quantity of tokens to burn. */ function burn(uint256 tokenId, uint256 quantity) external; /** * @dev Mints specified tokens to multiple recipients as part of an airdrop. * @param tokenIds The IDs of the tokens to mint. * @param recipients The list of addresses to receive the minted tokens. */ function mintAirdrop(uint256[] calldata tokenIds, address[] calldata recipients) external; /** * @dev Mints a specified number of tokens to the presale buyer address. * @param to The address to which the minted tokens will be sent. * @param tokenId The ID of the token to mint. * @param quantity The quantity of tokens to mint. * @param maxQuantity The maximum quantity of tokens that can be minted. * @param pricePerToken The price per token in wei. * @param merkleProof The Merkle proof verifying that the presale buyer is eligible to mint tokens. */ function mintPresale( address to, uint256 tokenId, uint256 quantity, uint256 maxQuantity, uint256 pricePerToken, bytes32[] calldata merkleProof ) external payable; /** * @dev Pauses public minting. */ function pause() external; /** * @dev Unpauses public minting. */ function unpause() external; /** * @dev Sets the payout address to the specified address. * Use 0x0 to default to the contract owner. * @param _payoutAddress The address to set as the payout address. */ function setPayoutAddress(address _payoutAddress) external; /** * @dev Withdraws the balance of the contract to the payout address or the contract owner. */ function withdraw() external; /** * @dev Sets the royalty fee (ERC-2981: NFT Royalty Standard). * @param _royaltyBPS The royalty fee in basis points. (1/100th of a percent) */ function setRoyaltyBPS(uint16 _royaltyBPS) external; /** * @dev Returns the royalty recipient and amount for a given sale price. * @param tokenId The ID of the token being sold. * @param salePrice The sale price of the token. * @return receiver The address of the royalty recipient. * @return royaltyAmount The amount to be paid to the royalty recipient. */ function royaltyInfo(uint256 tokenId, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount); /** * @dev Returns true if the contract supports the given interface (ERC2981 or ERC1155), * as specified by interfaceId, false otherwise. * @param interfaceId The interface identifier, as specified in ERC-165. * @return True if the contract supports interfaceId, false otherwise. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); /** * @dev Updates the operator filter registry with the specified subscription. * @param enable If true, enables the operator filter, if false, disables it. * @param operatorFilter The address of the operator filter subscription. */ function updateOperatorFilter(bool enable, address operatorFilter) external; /** * @dev Sets or revokes approval for a third party ("operator") to manage all of the caller's tokens. * @param operator The address of the operator to grant or revoke approval. * @param approved True to grant approval, false to revoke it. */ function setApprovalForAll( address operator, bool approved ) external; }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity ^0.8.0; interface IFeeManager { error SplitsAreActive(); error WithdrawFailed(); function setFees(uint256 _fee, uint256 _commissionBPS) external; function calculateFees(uint256 salePrice, uint256 quantity) external view returns (uint256 fee, uint256 commission); function recipient() external view returns (address); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface ITokenWithBalance { function balanceOf(address owner) external returns (uint256); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity ^0.8.4; import {ERC20} from "solmate/src/tokens/ERC20.sol"; /** * @title ISplitMain * @author 0xSplits <[email protected]> */ interface ISplitMain { /** * FUNCTIONS */ function walletImplementation() external returns (address); function createSplit( address[] calldata accounts, uint32[] calldata percentAllocations, uint32 distributorFee, address controller ) external returns (address); function predictImmutableSplitAddress( address[] calldata accounts, uint32[] calldata percentAllocations, uint32 distributorFee ) external view returns (address); function updateSplit( address split, address[] calldata accounts, uint32[] calldata percentAllocations, uint32 distributorFee ) external; function transferControl(address split, address newController) external; function cancelControlTransfer(address split) external; function acceptControl(address split) external; function makeSplitImmutable(address split) external; function distributeETH( address split, address[] calldata accounts, uint32[] calldata percentAllocations, uint32 distributorFee, address distributorAddress ) external; function updateAndDistributeETH( address split, address[] calldata accounts, uint32[] calldata percentAllocations, uint32 distributorFee, address distributorAddress ) external; function distributeERC20( address split, ERC20 token, address[] calldata accounts, uint32[] calldata percentAllocations, uint32 distributorFee, address distributorAddress ) external; function updateAndDistributeERC20( address split, ERC20 token, address[] calldata accounts, uint32[] calldata percentAllocations, uint32 distributorFee, address distributorAddress ) external; function withdraw( address account, uint256 withdrawETH, ERC20[] calldata tokens ) external; /** * EVENTS */ /** @notice emitted after each successful split creation * @param split Address of the created split */ event CreateSplit(address indexed split); /** @notice emitted after each successful split update * @param split Address of the updated split */ event UpdateSplit(address indexed split); /** @notice emitted after each initiated split control transfer * @param split Address of the split control transfer was initiated for * @param newPotentialController Address of the split's new potential controller */ event InitiateControlTransfer( address indexed split, address indexed newPotentialController ); /** @notice emitted after each canceled split control transfer * @param split Address of the split control transfer was canceled for */ event CancelControlTransfer(address indexed split); /** @notice emitted after each successful split control transfer * @param split Address of the split control was transferred for * @param previousController Address of the split's previous controller * @param newController Address of the split's new controller */ event ControlTransfer( address indexed split, address indexed previousController, address indexed newController ); /** @notice emitted after each successful ETH balance split * @param split Address of the split that distributed its balance * @param amount Amount of ETH distributed * @param distributorAddress Address to credit distributor fee to */ event DistributeETH( address indexed split, uint256 amount, address indexed distributorAddress ); /** @notice emitted after each successful ERC20 balance split * @param split Address of the split that distributed its balance * @param token Address of ERC20 distributed * @param amount Amount of ERC20 distributed * @param distributorAddress Address to credit distributor fee to */ event DistributeERC20( address indexed split, ERC20 indexed token, uint256 amount, address indexed distributorAddress ); /** @notice emitted after each successful withdrawal * @param account Address that funds were withdrawn to * @param ethAmount Amount of ETH withdrawn * @param tokens Addresses of ERC20s withdrawn * @param tokenAmounts Amounts of corresponding ERC20s withdrawn */ event Withdrawal( address indexed account, uint256 ethAmount, ERC20[] tokens, uint256[] tokenAmounts ); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; enum SaleType { ALL, PRESALE, PRIMARY } struct TokenGateConfig { address tokenAddress; uint88 minBalance; SaleType saleType; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {IOperatorFilterRegistry} from "operator-filter-registry/src/IOperatorFilterRegistry.sol"; /** * @title OperatorFilterer * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another * registrant's entries in the OperatorFilterRegistry. * @dev This smart contract is meant to be inherited by token contracts so they can use the following: * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods. * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods. */ abstract contract OperatorFilterer { error OperatorNotAllowed(address operator); IOperatorFilterRegistry public constant operatorFilterRegistry = IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E); modifier onlyAllowedOperator(address from) virtual { // Allow spending tokens from addresses with balance // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred // from an EOA. if (from != msg.sender) { _checkFilterOperator(msg.sender); } _; } modifier onlyAllowedOperatorApproval(address operator) virtual { _checkFilterOperator(operator); _; } function _checkFilterOperator(address operator) internal view virtual { // Check registry code length to facilitate testing in environments without a deployed registry. if (address(operatorFilterRegistry).code.length > 0) { if (!operatorFilterRegistry.isOperatorAllowed(address(this), operator)) { revert OperatorNotAllowed(operator); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol) pragma solidity ^0.8.0; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable { /** * @dev Indicates whether the contract is currently paused or not. */ bool private _paused; /** * @dev Error thrown when the contract is paused and an operation is attempted. */ error Paused(); /** * @dev Error thrown when the contract is not paused and an operation is attempted. */ error NotPaused(); /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { if ( paused() ) revert Paused(); } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { if ( ! paused() ) revert NotPaused(); } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity ^0.8; import {ERC20} from "solmate/src/tokens/ERC20.sol"; import "../splits/interfaces/ISplitMain.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; abstract contract Splits is Ownable { address public splitMain; address public splitWallet; function createSplit( address _splitMain, address[] calldata accounts, uint32[] calldata percentAllocations, uint32 distributorFee ) public virtual onlyOwner { require(splitWallet == address(0), "Split already created"); splitMain = _splitMain; splitWallet = ISplitMain(splitMain).createSplit( accounts, percentAllocations, distributorFee, msg.sender ); } function distributeETH( address[] calldata accounts, uint32[] calldata percentAllocations, uint32 distributorFee, address distributorAddress ) public virtual requireSplit { _transferETHToSplit(); ISplitMain(splitMain).distributeETH( splitWallet, accounts, percentAllocations, distributorFee, distributorAddress ); } function distributeERC20( ERC20 token, address[] calldata accounts, uint32[] calldata percentAllocations, uint32 distributorFee, address distributorAddress ) public virtual requireSplit { _transferERC20ToSplit(token); ISplitMain(splitMain).distributeERC20( splitWallet, token, accounts, percentAllocations, distributorFee, distributorAddress ); } function distributeAndWithdraw( address account, uint256 withdrawETH, ERC20[] memory tokens, address[] calldata accounts, uint32[] calldata percentAllocations, uint32 distributorFee, address distributorAddress ) public virtual requireSplit { if (withdrawETH != 0) { distributeETH( accounts, percentAllocations, distributorFee, distributorAddress ); } for (uint256 i = 0; i < tokens.length; ++i) { distributeERC20( tokens[i], accounts, percentAllocations, distributorFee, distributorAddress ); } _withdraw(account, withdrawETH, tokens); } function transferToSplit(uint256 transferETH, ERC20[] memory tokens) public virtual requireSplit { if (transferETH != 0) { _transferETHToSplit(); } for (uint256 i = 0; i < tokens.length; ++i) { _transferERC20ToSplit(tokens[i]); } } function _transferETHToSplit() internal virtual { (bool success, ) = splitWallet.call{value: address(this).balance}(""); require(success, "Could not transfer ETH to split"); } function _transferERC20ToSplit(ERC20 token) internal virtual { uint256 balance = token.balanceOf(address(this)); token.transfer(splitWallet, balance); } function _withdraw( address account, uint256 withdrawETH, ERC20[] memory tokens ) internal virtual { ISplitMain(splitMain).withdraw( account, withdrawETH, tokens ); } modifier requireSplit() { require(splitWallet != address(0), "Split not created yet"); _; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.10; contract Version { uint32 private immutable _version; /// @notice The version of the contract /// @return The version ID of this contract implementation function contractVersion() external view returns (uint32) { return _version; } constructor(uint32 version) { _version = version; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; interface IOperatorFilterRegistry { function isOperatorAllowed(address registrant, address operator) external view returns (bool); function register(address registrant) external; function registerAndSubscribe(address registrant, address subscription) external; function registerAndCopyEntries(address registrant, address registrantToCopy) external; function unregister(address addr) external; function updateOperator(address registrant, address operator, bool filtered) external; function updateOperators(address registrant, address[] calldata operators, bool filtered) external; function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external; function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external; function subscribe(address registrant, address registrantToSubscribe) external; function unsubscribe(address registrant, bool copyExistingEntries) external; function subscriptionOf(address addr) external returns (address registrant); function subscribers(address registrant) external returns (address[] memory); function subscriberAt(address registrant, uint256 index) external returns (address); function copyEntriesOf(address registrant, address registrantToCopy) external; function isOperatorFiltered(address registrant, address operator) external returns (bool); function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool); function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool); function filteredOperators(address addr) external returns (address[] memory); function filteredCodeHashes(address addr) external returns (bytes32[] memory); function filteredOperatorAt(address registrant, uint256 index) external returns (address); function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32); function isRegistered(address addr) external returns (bool); function codeHashOf(address addr) external returns (bytes32); }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Minimalist and gas efficient standard ERC1155 implementation. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC1155.sol) abstract contract ERC1155 { /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event TransferSingle( address indexed operator, address indexed from, address indexed to, uint256 id, uint256 amount ); event TransferBatch( address indexed operator, address indexed from, address indexed to, uint256[] ids, uint256[] amounts ); event ApprovalForAll(address indexed owner, address indexed operator, bool approved); event URI(string value, uint256 indexed id); /*////////////////////////////////////////////////////////////// ERC1155 STORAGE //////////////////////////////////////////////////////////////*/ mapping(address => mapping(uint256 => uint256)) public balanceOf; mapping(address => mapping(address => bool)) public isApprovedForAll; /*////////////////////////////////////////////////////////////// METADATA LOGIC //////////////////////////////////////////////////////////////*/ function uri(uint256 id) public view virtual returns (string memory); /*////////////////////////////////////////////////////////////// ERC1155 LOGIC //////////////////////////////////////////////////////////////*/ function setApprovalForAll(address operator, bool approved) public virtual { isApprovedForAll[msg.sender][operator] = approved; emit ApprovalForAll(msg.sender, operator, approved); } function safeTransferFrom( address from, address to, uint256 id, uint256 amount, bytes calldata data ) public virtual { require(msg.sender == from || isApprovedForAll[from][msg.sender], "NOT_AUTHORIZED"); balanceOf[from][id] -= amount; balanceOf[to][id] += amount; emit TransferSingle(msg.sender, from, to, id, amount); require( to.code.length == 0 ? to != address(0) : ERC1155TokenReceiver(to).onERC1155Received(msg.sender, from, id, amount, data) == ERC1155TokenReceiver.onERC1155Received.selector, "UNSAFE_RECIPIENT" ); } function safeBatchTransferFrom( address from, address to, uint256[] calldata ids, uint256[] calldata amounts, bytes calldata data ) public virtual { require(ids.length == amounts.length, "LENGTH_MISMATCH"); require(msg.sender == from || isApprovedForAll[from][msg.sender], "NOT_AUTHORIZED"); // Storing these outside the loop saves ~15 gas per iteration. uint256 id; uint256 amount; for (uint256 i = 0; i < ids.length; ) { id = ids[i]; amount = amounts[i]; balanceOf[from][id] -= amount; balanceOf[to][id] += amount; // An array can't have a total length // larger than the max uint256 value. unchecked { ++i; } } emit TransferBatch(msg.sender, from, to, ids, amounts); require( to.code.length == 0 ? to != address(0) : ERC1155TokenReceiver(to).onERC1155BatchReceived(msg.sender, from, ids, amounts, data) == ERC1155TokenReceiver.onERC1155BatchReceived.selector, "UNSAFE_RECIPIENT" ); } function balanceOfBatch(address[] calldata owners, uint256[] calldata ids) public view virtual returns (uint256[] memory balances) { require(owners.length == ids.length, "LENGTH_MISMATCH"); balances = new uint256[](owners.length); // Unchecked because the only math done is incrementing // the array index counter which cannot possibly overflow. unchecked { for (uint256 i = 0; i < owners.length; ++i) { balances[i] = balanceOf[owners[i]][ids[i]]; } } } /*////////////////////////////////////////////////////////////// ERC165 LOGIC //////////////////////////////////////////////////////////////*/ function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) { return interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165 interfaceId == 0xd9b67a26 || // ERC165 Interface ID for ERC1155 interfaceId == 0x0e89341c; // ERC165 Interface ID for ERC1155MetadataURI } /*////////////////////////////////////////////////////////////// INTERNAL MINT/BURN LOGIC //////////////////////////////////////////////////////////////*/ function _mint( address to, uint256 id, uint256 amount, bytes memory data ) internal virtual { balanceOf[to][id] += amount; emit TransferSingle(msg.sender, address(0), to, id, amount); require( to.code.length == 0 ? to != address(0) : ERC1155TokenReceiver(to).onERC1155Received(msg.sender, address(0), id, amount, data) == ERC1155TokenReceiver.onERC1155Received.selector, "UNSAFE_RECIPIENT" ); } function _batchMint( address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) internal virtual { uint256 idsLength = ids.length; // Saves MLOADs. require(idsLength == amounts.length, "LENGTH_MISMATCH"); for (uint256 i = 0; i < idsLength; ) { balanceOf[to][ids[i]] += amounts[i]; // An array can't have a total length // larger than the max uint256 value. unchecked { ++i; } } emit TransferBatch(msg.sender, address(0), to, ids, amounts); require( to.code.length == 0 ? to != address(0) : ERC1155TokenReceiver(to).onERC1155BatchReceived(msg.sender, address(0), ids, amounts, data) == ERC1155TokenReceiver.onERC1155BatchReceived.selector, "UNSAFE_RECIPIENT" ); } function _batchBurn( address from, uint256[] memory ids, uint256[] memory amounts ) internal virtual { uint256 idsLength = ids.length; // Saves MLOADs. require(idsLength == amounts.length, "LENGTH_MISMATCH"); for (uint256 i = 0; i < idsLength; ) { balanceOf[from][ids[i]] -= amounts[i]; // An array can't have a total length // larger than the max uint256 value. unchecked { ++i; } } emit TransferBatch(msg.sender, from, address(0), ids, amounts); } function _burn( address from, uint256 id, uint256 amount ) internal virtual { balanceOf[from][id] -= amount; emit TransferSingle(msg.sender, from, address(0), id, amount); } } /// @notice A generic interface for a contract which properly accepts ERC1155 tokens. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC1155.sol) abstract contract ERC1155TokenReceiver { function onERC1155Received( address, address, uint256, uint256, bytes calldata ) external virtual returns (bytes4) { return ERC1155TokenReceiver.onERC1155Received.selector; } function onERC1155BatchReceived( address, address, uint256[] calldata, uint256[] calldata, bytes calldata ) external virtual returns (bytes4) { return ERC1155TokenReceiver.onERC1155BatchReceived.selector; } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Modern and gas efficient ERC20 + EIP-2612 implementation. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC20.sol) /// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol) /// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it. abstract contract ERC20 { /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event Transfer(address indexed from, address indexed to, uint256 amount); event Approval(address indexed owner, address indexed spender, uint256 amount); /*////////////////////////////////////////////////////////////// METADATA STORAGE //////////////////////////////////////////////////////////////*/ string public name; string public symbol; uint8 public immutable decimals; /*////////////////////////////////////////////////////////////// ERC20 STORAGE //////////////////////////////////////////////////////////////*/ uint256 public totalSupply; mapping(address => uint256) public balanceOf; mapping(address => mapping(address => uint256)) public allowance; /*////////////////////////////////////////////////////////////// EIP-2612 STORAGE //////////////////////////////////////////////////////////////*/ uint256 internal immutable INITIAL_CHAIN_ID; bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR; mapping(address => uint256) public nonces; /*////////////////////////////////////////////////////////////// CONSTRUCTOR //////////////////////////////////////////////////////////////*/ constructor( string memory _name, string memory _symbol, uint8 _decimals ) { name = _name; symbol = _symbol; decimals = _decimals; INITIAL_CHAIN_ID = block.chainid; INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator(); } /*////////////////////////////////////////////////////////////// ERC20 LOGIC //////////////////////////////////////////////////////////////*/ function approve(address spender, uint256 amount) public virtual returns (bool) { allowance[msg.sender][spender] = amount; emit Approval(msg.sender, spender, amount); return true; } function transfer(address to, uint256 amount) public virtual returns (bool) { balanceOf[msg.sender] -= amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(msg.sender, to, amount); return true; } function transferFrom( address from, address to, uint256 amount ) public virtual returns (bool) { uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals. if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount; balanceOf[from] -= amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(from, to, amount); return true; } /*////////////////////////////////////////////////////////////// EIP-2612 LOGIC //////////////////////////////////////////////////////////////*/ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public virtual { require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED"); // Unchecked because the only math done is incrementing // the owner's nonce which cannot realistically overflow. unchecked { address recoveredAddress = ecrecover( keccak256( abi.encodePacked( "\x19\x01", DOMAIN_SEPARATOR(), keccak256( abi.encode( keccak256( "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)" ), owner, spender, value, nonces[owner]++, deadline ) ) ) ), v, r, s ); require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER"); allowance[recoveredAddress][spender] = value; } emit Approval(owner, spender, value); } function DOMAIN_SEPARATOR() public view virtual returns (bytes32) { return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator(); } function computeDomainSeparator() internal view virtual returns (bytes32) { return keccak256( abi.encode( keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"), keccak256(bytes(name)), keccak256("1"), block.chainid, address(this) ) ); } /*////////////////////////////////////////////////////////////// INTERNAL MINT/BURN LOGIC //////////////////////////////////////////////////////////////*/ function _mint(address to, uint256 amount) internal virtual { totalSupply += amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(address(0), to, amount); } function _burn(address from, uint256 amount) internal virtual { balanceOf[from] -= amount; // Cannot underflow because a user's balance // will never be larger than the total supply. unchecked { totalSupply -= amount; } emit Transfer(from, address(0), amount); } }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
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Multichain Portfolio | 30 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.