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Contract Name:
ERC721TransferHelper
Compiler Version
v0.8.10+commit.fc410830
Optimization Enabled:
Yes with 2000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.10; import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol"; import {BaseTransferHelper} from "./BaseTransferHelper.sol"; /// @title ERC-721 Transfer Helper /// @author tbtstl <[email protected]> /// @notice This contract provides modules the ability to transfer ZORA user ERC-721s with their permission contract ERC721TransferHelper is BaseTransferHelper { constructor(address _approvalsManager) BaseTransferHelper(_approvalsManager) {} function safeTransferFrom( address _token, address _from, address _to, uint256 _tokenId ) public onlyApprovedModule(_from) { IERC721(_token).safeTransferFrom(_from, _to, _tokenId); } function transferFrom( address _token, address _from, address _to, uint256 _tokenId ) public onlyApprovedModule(_from) { IERC721(_token).transferFrom(_from, _to, _tokenId); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.10; import {ZoraModuleManager} from "../ZoraModuleManager.sol"; /// @title Base Transfer Helper /// @author tbtstl <[email protected]> /// @notice This contract provides shared utility for ZORA transfer helpers contract BaseTransferHelper { /// @notice The ZORA Module Manager ZoraModuleManager public immutable ZMM; /// @param _moduleManager The ZORA Module Manager referred to for transfer permissions constructor(address _moduleManager) { require(_moduleManager != address(0), "must set module manager to non-zero address"); ZMM = ZoraModuleManager(_moduleManager); } /// @notice Ensures a user has approved the module they're calling /// @param _user The address of the user modifier onlyApprovedModule(address _user) { require(isModuleApproved(_user), "module has not been approved by user"); _; } /// @notice If a user has approved the module they're calling /// @param _user The address of the user function isModuleApproved(address _user) public view returns (bool) { return ZMM.isModuleApproved(_user, msg.sender); } }
// SPDX-License-Identifier: MIT 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: GPL-3.0 pragma solidity 0.8.10; import {ZoraProtocolFeeSettings} from "./auxiliary/ZoraProtocolFeeSettings/ZoraProtocolFeeSettings.sol"; /// @title ZoraModuleManager /// @author tbtstl <[email protected]> /// @notice This contract allows users to add & access modules on ZORA V3, plus utilize the ZORA transfer helpers contract ZoraModuleManager { /// @notice The EIP-712 type for a signed approval /// @dev keccak256("SignedApproval(address module,address user,bool approved,uint256 deadline,uint256 nonce)") bytes32 private constant SIGNED_APPROVAL_TYPEHASH = 0x8413132cc7aa5bd2ce1a1b142a3f09e2baeda86addf4f9a5dacd4679f56e7cec; /// @notice the EIP-712 domain separator bytes32 private immutable EIP_712_DOMAIN_SEPARATOR = keccak256( abi.encode( keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"), keccak256(bytes("ZORA")), keccak256(bytes("3")), _chainID(), address(this) ) ); /// @notice The signature nonces for 3rd party module approvals mapping(address => uint256) public sigNonces; /// @notice The registrar address that can register modules address public registrar; /// @notice The module fee NFT contract to mint from upon module registration ZoraProtocolFeeSettings public moduleFeeToken; /// @notice Mapping of each user to module approval in the ZORA registry /// @dev User address => Module address => Approved mapping(address => mapping(address => bool)) public userApprovals; /// @notice A mapping of module addresses to module data mapping(address => bool) public moduleRegistered; modifier onlyRegistrar() { require(msg.sender == registrar, "ZMM::onlyRegistrar must be registrar"); _; } event ModuleRegistered(address indexed module); event ModuleApprovalSet(address indexed user, address indexed module, bool approved); event RegistrarChanged(address indexed newRegistrar); /// @param _registrar The initial registrar for the manager /// @param _feeToken The module fee token contract to mint from upon module registration constructor(address _registrar, address _feeToken) { require(_registrar != address(0), "ZMM::must set registrar to non-zero address"); registrar = _registrar; moduleFeeToken = ZoraProtocolFeeSettings(_feeToken); } /// @notice Returns true if the user has approved a given module, false otherwise /// @param _user The user to check approvals for /// @param _module The module to check approvals for /// @return True if the module has been approved by the user, false otherwise function isModuleApproved(address _user, address _module) external view returns (bool) { return userApprovals[_user][_module]; } // ,-. // `-' // /|\ // | ,-----------------. // / \ |ZoraModuleManager| // Caller `--------+--------' // | setApprovalForModule()| // | ----------------------> // | | // | |----. // | | | set approval for module // | |<---' // | | // | |----. // | | | emit ModuleApprovalSet() // | |<---' // Caller ,--------+--------. // ,-. |ZoraModuleManager| // `-' `-----------------' // /|\ // | // / \ /// @notice Allows a user to set the approval for a given module /// @param _module The module to approve /// @param _approved A boolean, whether or not to approve a module function setApprovalForModule(address _module, bool _approved) public { _setApprovalForModule(_module, msg.sender, _approved); } // ,-. // `-' // /|\ // | ,-----------------. // / \ |ZoraModuleManager| // Caller `--------+--------' // | setBatchApprovalForModule()| // | ---------------------------> // | | // | | // | _____________________________________________________ // | ! LOOP / for each module ! // | !______/ | ! // | ! |----. ! // | ! | | set approval for module ! // | ! |<---' ! // | ! | ! // | ! |----. ! // | ! | | emit ModuleApprovalSet() ! // | ! |<---' ! // | !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~! // Caller ,--------+--------. // ,-. |ZoraModuleManager| // `-' `-----------------' // /|\ // | // / \ /// @notice Sets approvals for multiple modules at once /// @param _modules The list of module addresses to set approvals for /// @param _approved A boolean, whether or not to approve the modules function setBatchApprovalForModules(address[] memory _modules, bool _approved) public { for (uint256 i = 0; i < _modules.length; i++) { _setApprovalForModule(_modules[i], msg.sender, _approved); } } // ,-. // `-' // /|\ // | ,-----------------. // / \ |ZoraModuleManager| // Caller `--------+--------' // | setApprovalForModuleBySig()| // | ---------------------------> // | | // | |----. // | | | recover user address from signature // | |<---' // | | // | |----. // | | | set approval for module // | |<---' // | | // | |----. // | | | emit ModuleApprovalSet() // | |<---' // Caller ,--------+--------. // ,-. |ZoraModuleManager| // `-' `-----------------' // /|\ // | // / \ /// @notice Sets approval for a module given an EIP-712 signature /// @param _module The module to approve /// @param _user The user to approve the module for /// @param _approved A boolean, whether or not to approve a module /// @param _deadline The deadline at which point the given signature expires /// @param _v The 129th byte and chain ID of the signature /// @param _r The first 64 bytes of the signature /// @param _s Bytes 64-128 of the signature function setApprovalForModuleBySig( address _module, address _user, bool _approved, uint256 _deadline, uint8 _v, bytes32 _r, bytes32 _s ) public { require(_deadline == 0 || _deadline >= block.timestamp, "ZMM::setApprovalForModuleBySig deadline expired"); bytes32 digest = keccak256( abi.encodePacked( "\x19\x01", EIP_712_DOMAIN_SEPARATOR, keccak256(abi.encode(SIGNED_APPROVAL_TYPEHASH, _module, _user, _approved, _deadline, sigNonces[_user]++)) ) ); address recoveredAddress = ecrecover(digest, _v, _r, _s); require(recoveredAddress != address(0) && recoveredAddress == _user, "ZMM::setApprovalForModuleBySig invalid signature"); _setApprovalForModule(_module, _user, _approved); } // ,-. // `-' // /|\ // | ,-----------------. ,-----------------------. // / \ |ZoraModuleManager| |ZoraProtocolFeeSettings| // Registrar `--------+--------' `-----------+-----------' // | registerModule() | | // |----------------------->| | // | | | // | ----. | // | | register module | // | <---' | // | | | // | | mint() | // | |------------------------------>| // | | | // | | ----. // | | | mint token to registrar // | | <---' // | | | // | ----. | // | | emit ModuleRegistered() | // | <---' | // Registrar ,--------+--------. ,-----------+-----------. // ,-. |ZoraModuleManager| |ZoraProtocolFeeSettings| // `-' `-----------------' `-----------------------' // /|\ // | // / \ /// @notice Registers a module /// @param _module The address of the module function registerModule(address _module) public onlyRegistrar { require(!moduleRegistered[_module], "ZMM::registerModule module already registered"); moduleRegistered[_module] = true; moduleFeeToken.mint(registrar, _module); emit ModuleRegistered(_module); } // ,-. // `-' // /|\ // | ,-----------------. // / \ |ZoraModuleManager| // Registrar `--------+--------' // | setRegistrar() | // |----------------------->| // | | // | ----. // | | set registrar // | <---' // | | // | ----. // | | emit RegistrarChanged() // | <---' // Registrar ,--------+--------. // ,-. |ZoraModuleManager| // `-' `-----------------' // /|\ // | // / \ /// @notice Sets the registrar for the ZORA Module Manager /// @param _registrar the address of the new registrar function setRegistrar(address _registrar) public onlyRegistrar { require(_registrar != address(0), "ZMM::setRegistrar must set registrar to non-zero address"); registrar = _registrar; emit RegistrarChanged(_registrar); } function _chainID() private view returns (uint256 id) { assembly { id := chainid() } } function _setApprovalForModule( address _module, address _user, bool _approved ) private { require(moduleRegistered[_module], "ZMM::must be registered module"); userApprovals[_user][_module] = _approved; emit ModuleApprovalSet(msg.sender, _module, _approved); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.10; import {ERC721} from "@openzeppelin/contracts/token/ERC721/ERC721.sol"; interface IERC721TokenURI { function tokenURI(uint256 tokenId) external view returns (string memory); } /// @title ZoraProtocolFeeSettings /// @author tbtstl <[email protected]> /// @notice This contract allows an optional fee percentage and recipient to be set for individual ZORA modules contract ZoraProtocolFeeSettings is ERC721 { struct FeeSetting { uint16 feeBps; address feeRecipient; } address public metadata; address public owner; address public minter; mapping(address => FeeSetting) public moduleFeeSetting; event MetadataUpdated(address indexed newMetadata); event OwnerUpdated(address indexed newOwner); event ProtocolFeeUpdated(address indexed module, address feeRecipient, uint16 feeBps); // Only allow the module fee owner to access the function modifier onlyModuleOwner(address _module) { uint256 tokenId = moduleToTokenId(_module); require(ownerOf(tokenId) == msg.sender, "onlyModuleOwner"); _; } constructor() ERC721("ZORA Module Fee Switch", "ZORF") { _setOwner(msg.sender); } /// @notice Initialize the Protocol Fee Settings /// @param _minter The address that can mint new NFTs (expected ZoraProposalManager address) function init(address _minter, address _metadata) external { require(msg.sender == owner, "init only owner"); require(minter == address(0), "init already initialized"); minter = _minter; metadata = _metadata; } // ,-. // `-' // /|\ // | ,-----------------------. // / \ |ZoraProtocolFeeSettings| // Minter `-----------+-----------' // | mint() | // | ------------------------>| // | | // | ----. // | | derive token ID from module address // | <---' // | | // | ----. // | | mint token to given address // | <---' // | | // | return token ID | // | <------------------------| // Minter ,-----------+-----------. // ,-. |ZoraProtocolFeeSettings| // `-' `-----------------------' // /|\ // | // / \ /// @notice Mint a new protocol fee setting for a module /// @param _to, the address to send the protocol fee setting token to /// @param _module, the module for which the minted token will represent function mint(address _to, address _module) external returns (uint256) { require(msg.sender == minter, "mint onlyMinter"); uint256 tokenId = moduleToTokenId(_module); _mint(_to, tokenId); return tokenId; } // ,-. // `-' // /|\ // | ,-----------------------. // / \ |ZoraProtocolFeeSettings| // ModuleOwner `-----------+-----------' // | setFeeParams() | // |--------------------------->| // | | // | ----. // | | set fee parameters // | <---' // | | // | ----. // | | emit ProtocolFeeUpdated() // | <---' // ModuleOwner ,-----------+-----------. // ,-. |ZoraProtocolFeeSettings| // `-' `-----------------------' // /|\ // | // / \ /// @notice Sets fee parameters for ZORA protocol. /// @param _module The module to apply the fee settings to /// @param _feeRecipient The fee recipient address to send fees to /// @param _feeBps The bps of transaction value to send to the fee recipient function setFeeParams( address _module, address _feeRecipient, uint16 _feeBps ) external onlyModuleOwner(_module) { require(_feeBps <= 10000, "setFeeParams must set fee <= 100%"); require(_feeRecipient != address(0) || _feeBps == 0, "setFeeParams fee recipient cannot be 0 address if fee is greater than 0"); moduleFeeSetting[_module] = FeeSetting(_feeBps, _feeRecipient); emit ProtocolFeeUpdated(_module, _feeRecipient, _feeBps); } // ,-. // `-' // /|\ // | ,-----------------------. // / \ |ZoraProtocolFeeSettings| // Owner `-----------+-----------' // | setOwner() | // |------------------------>| // | | // | ----. // | | set owner // | <---' // | | // | ----. // | | emit OwnerUpdated() // | <---' // Owner ,-----------+-----------. // ,-. |ZoraProtocolFeeSettings| // `-' `-----------------------' // /|\ // | // / \ /// @notice Sets the owner of the contract /// @param _owner the new owner function setOwner(address _owner) external { require(msg.sender == owner, "setOwner onlyOwner"); _setOwner(_owner); } // ,-. // `-' // /|\ // | ,-----------------------. // / \ |ZoraProtocolFeeSettings| // Owner `-----------+-----------' // | setMetadata() | // |------------------------>| // | | // | ----. // | | set metadata // | <---' // | | // | ----. // | | emit MetadataUpdated() // | <---' // Owner ,-----------+-----------. // ,-. |ZoraProtocolFeeSettings| // `-' `-----------------------' // /|\ // | // / \ function setMetadata(address _metadata) external { require(msg.sender == owner, "setMetadata onlyOwner"); _setMetadata(_metadata); } /// @notice Computes the fee for a given uint256 amount /// @param _module The module to compute the fee for /// @param _amount The amount to compute the fee for /// @return amount to be paid out to the fee recipient function getFeeAmount(address _module, uint256 _amount) external view returns (uint256) { return (_amount * moduleFeeSetting[_module].feeBps) / 10000; } /// @notice returns the module address for a given token ID /// @param _tokenId The token ID function tokenIdToModule(uint256 _tokenId) public pure returns (address) { return address(uint160(_tokenId)); } /// @notice returns the token ID for a given module /// @dev we don't worry about losing the top 20 bytes when going from uint256 -> uint160 since we know token ID must have derived from an address /// @param _module The module address function moduleToTokenId(address _module) public pure returns (uint256) { return uint256(uint160(_module)); } function _setOwner(address _owner) private { owner = _owner; emit OwnerUpdated(_owner); } function _setMetadata(address _metadata) private { metadata = _metadata; emit MetadataUpdated(_metadata); } function tokenURI(uint256 tokenId) public view override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); require(metadata != address(0), "ERC721Metadata: no metadata address"); return IERC721TokenURI(metadata).tokenURI(tokenId); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT 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 pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: MIT 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; } }
{ "optimizer": { "enabled": true, "runs": 2000 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"_approvalsManager","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ZMM","outputs":[{"internalType":"contract ZoraModuleManager","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"isModuleApproved","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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
Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000850a7c6fe2cf48eea1393554c8a3ba23f20cc401
-----Decoded View---------------
Arg [0] : _approvalsManager (address): 0x850A7c6fE2CF48eea1393554C8A3bA23f20CC401
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000850a7c6fe2cf48eea1393554c8a3ba23f20cc401
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