Transaction Hash:
Block:
16964002 at Apr-02-2023 09:16:11 PM +UTC
Transaction Fee:
0.00219273013487745 ETH
$5.58
Gas Used:
93,870 Gas / 23.359221635 Gwei
Emitted Events:
221 |
PocketProtect.TransferSingle( operator=[Sender] 0xc8751a1b9ed6a5562d009e5ad5067b6131fdb346, from=0x00000000...000000000, to=[Sender] 0xc8751a1b9ed6a5562d009e5ad5067b6131fdb346, id=2, value=1 )
|
Account State Difference:
Address | Before | After | State Difference | ||
---|---|---|---|---|---|
0x1f9090aa...8e676c326
Miner
| 2.621282037555069374 Eth | 2.621291424555069374 Eth | 0.000009387 | ||
0x601d736F...7F417866b | |||||
0xc8751a1B...131fDB346 |
0.059900161236002435 Eth
Nonce: 1817
|
0.057707431101124985 Eth
Nonce: 1818
| 0.00219273013487745 |
Execution Trace
PocketProtect.mintToken( _tokenId=2, _numTokens=1 )
// SPDX-License-Identifier: MIT pragma solidity ^0.8.17; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "@openzeppelin/contracts/token/ERC1155/extensions/ERC1155Supply.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/security/Pausable.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/token/common/ERC2981.sol"; import "operator-filter-registry/src/RevokableOperatorFilterer.sol"; /** * @author Created with HeyMint Launchpad https://launchpad.heymint.xyz * @notice This contract handles minting Pocket Protect tokens. */ contract PocketProtect is ERC1155Supply, Ownable, Pausable, ReentrancyGuard, ERC2981, RevokableOperatorFilterer { using ECDSA for bytes32; // Default address to subscribe to for determining blocklisted exchanges address constant DEFAULT_SUBSCRIPTION = address(0x511af84166215d528ABf8bA6437ec4BEcF31934B); // Used to validate authorized presale mint addresses address private presaleSignerAddress = 0x041F9cC92894F08614Bf36939C30617Bde7bb5b2; address public royaltyAddress = 0xeC4Fd4664A082cC6565e5eD73fbf8cCfb07F5948; // Used to allow transferring soulbound tokens with admin privileges address public soulboundAdminAddress = address(0); address[] public payoutAddresses = [ 0xeC4Fd4664A082cC6565e5eD73fbf8cCfb07F5948 ]; // Used to allow an admin to transfer soulbound tokens when necessary bool private soulboundAdminTransferInProgress; // Permanently freezes metadata for all tokens so they can never be changed bool public allMetadataFrozen = false; // If true, all tokens are soulbound bool public allTokensSoulbound; // If true, payout addresses and basis points are permanently frozen and can never be updated bool public payoutAddressesFrozen; // If true the soulbind admin address is permanently disabled bool public soulbindAdminAddressPermanentlyDisabled; // The amount of tokens minted by a given address for a given token id mapping(address => mapping(uint256 => uint256)) public tokensMintedByAddress; // Permanently freezes metadata for a specific token id so it can never be changed mapping(uint256 => bool) public tokenMetadataFrozen; // If true, the given token id can never be minted again mapping(uint256 => bool) public tokenMintingPermanentlyDisabled; mapping(uint256 => bool) public tokenPresaleSaleActive; mapping(uint256 => bool) public tokenPublicSaleActive; // If true, tokens are soulbound, if false, tokens can be transferred mapping(uint256 => bool) public tokenTransfersDisabled; // If true, sale start and end times for the presale will be enforced, else ignored mapping(uint256 => bool) public tokenUsePresaleTimes; // If true, sale start and end times for the public sale will be enforced, else ignored mapping(uint256 => bool) public tokenUsePublicSaleTimes; mapping(uint256 => string) public tokenURI; // Maximum supply of tokens that can be minted for each token id. If zero, this token is open edition and has no mint limit mapping(uint256 => uint256) public tokenMaxSupply; // If zero, this token is open edition and has no mint limit mapping(uint256 => uint256) public tokenPresaleMaxSupply; mapping(uint256 => uint256) public tokenPresaleMintsPerAddress; mapping(uint256 => uint256) public tokenPresalePrice; mapping(uint256 => uint256) public tokenPresaleSaleEndTime; mapping(uint256 => uint256) public tokenPresaleSaleStartTime; mapping(uint256 => uint256) public tokenPublicMintsPerAddress; mapping(uint256 => uint256) public tokenPublicPrice; mapping(uint256 => uint256) public tokenPublicSaleEndTime; mapping(uint256 => uint256) public tokenPublicSaleStartTime; string public name = "Pocket Protect"; string public symbol = "PP"; // The respective share of funds to be sent to each address in payoutAddresses in basis points uint256[] public payoutBasisPoints = [10000]; uint96 public royaltyFee = 0; constructor() ERC1155( "ipfs://bafybeihgkm3xgg7ostoflplckol5tdry5w3nvr2c2v7cgqfpnwh44hvuoy/{id}" ) RevokableOperatorFilterer( 0x000000000000AAeB6D7670E522A718067333cd4E, DEFAULT_SUBSCRIPTION, true ) { _setDefaultRoyalty(royaltyAddress, royaltyFee); tokenPresaleMaxSupply[1] = 0; tokenPresalePrice[1] = 0 ether; tokenPresaleMintsPerAddress[1] = 1; require( payoutAddresses.length == payoutBasisPoints.length, "PAYOUT_ARRAYS_NOT_SAME_LENGTH" ); uint256 totalPayoutBasisPoints = 0; for (uint256 i = 0; i < payoutBasisPoints.length; i++) { totalPayoutBasisPoints += payoutBasisPoints[i]; } require( totalPayoutBasisPoints == 10000, "TOTAL_BASIS_POINTS_MUST_BE_10000" ); } modifier originalUser() { require(tx.origin == msg.sender, "CANNOT_CALL_FROM_CONTRACT"); _; } /** * @notice Returns a custom URI for each token id if set */ function uri(uint256 _tokenId) public view override returns (string memory) { // If no URI exists for the specific id requested, fallback to the default ERC-1155 URI. if (bytes(tokenURI[_tokenId]).length == 0) { return super.uri(_tokenId); } return tokenURI[_tokenId]; } /** * @notice Sets a URI for a specific token id. */ function setURI(uint256 _tokenId, string calldata _newTokenURI) external onlyOwner { require( !allMetadataFrozen && !tokenMetadataFrozen[_tokenId], "METADATA_HAS_BEEN_FROZEN" ); tokenURI[_tokenId] = _newTokenURI; } /** * @notice Update the global default ERC-1155 base URI */ function setGlobalURI(string calldata _newTokenURI) external onlyOwner { require(!allMetadataFrozen, "METADATA_HAS_BEEN_FROZEN"); _setURI(_newTokenURI); } /** * @notice Freeze metadata for a specific token id so it can never be changed again */ function freezeTokenMetadata(uint256 _tokenId) external onlyOwner { require( !tokenMetadataFrozen[_tokenId], "METADATA_HAS_ALREADY_BEEN_FROZEN" ); tokenMetadataFrozen[_tokenId] = true; } /** * @notice Freeze all metadata so it can never be changed again */ function freezeAllMetadata() external onlyOwner { require(!allMetadataFrozen, "METADATA_HAS_ALREADY_BEEN_FROZEN"); allMetadataFrozen = true; } /** * @notice Reduce the max supply of tokens for a given token id * @param _newMaxSupply The new maximum supply of tokens available to mint * @param _tokenId The token id to reduce the max supply for */ function reduceMaxSupply(uint256 _tokenId, uint256 _newMaxSupply) external onlyOwner { require( tokenMaxSupply[_tokenId] == 0 || _newMaxSupply < tokenMaxSupply[_tokenId], "NEW_MAX_SUPPLY_TOO_HIGH" ); require( _newMaxSupply >= totalSupply(_tokenId), "SUPPLY_LOWER_THAN_MINTED_TOKENS" ); tokenMaxSupply[_tokenId] = _newMaxSupply; } /** * @notice Lock a token id so that it can never be minted again */ function permanentlyDisableTokenMinting(uint256 _tokenId) external onlyOwner { tokenMintingPermanentlyDisabled[_tokenId] = true; } /** * @notice Change the royalty fee for the collection */ function setRoyaltyFee(uint96 _feeNumerator) external onlyOwner { royaltyFee = _feeNumerator; _setDefaultRoyalty(royaltyAddress, royaltyFee); } /** * @notice Change the royalty address where royalty payouts are sent */ function setRoyaltyAddress(address _royaltyAddress) external onlyOwner { royaltyAddress = _royaltyAddress; _setDefaultRoyalty(royaltyAddress, royaltyFee); } function pause() external onlyOwner { _pause(); } function unpause() external onlyOwner { _unpause(); } function supportsInterface(bytes4 _interfaceId) public view override(ERC1155, ERC2981) returns (bool) { return super.supportsInterface(_interfaceId); } /** * @notice Allow owner to send tokens without cost to multiple addresses */ function giftTokens( uint256 _tokenId, address[] calldata _receivers, uint256[] calldata _mintNumber ) external onlyOwner { require( !tokenMintingPermanentlyDisabled[_tokenId], "MINTING_PERMANENTLY_DISABLED" ); uint256 totalMint = 0; for (uint256 i = 0; i < _mintNumber.length; i++) { totalMint += _mintNumber[i]; } // require either no tokenMaxSupply set or tokenMaxSupply not maxed out require( tokenMaxSupply[_tokenId] == 0 || totalSupply(_tokenId) + totalMint <= tokenMaxSupply[_tokenId], "MINT_TOO_LARGE" ); for (uint256 i = 0; i < _receivers.length; i++) { _mint(_receivers[i], _tokenId, _mintNumber[i], ""); } } /** * @notice To be updated by contract owner to allow public sale minting for a given token */ function setTokenPublicSaleState(uint256 _tokenId, bool _saleActiveState) external onlyOwner { require( tokenPublicSaleActive[_tokenId] != _saleActiveState, "NEW_STATE_IDENTICAL_TO_OLD_STATE" ); tokenPublicSaleActive[_tokenId] = _saleActiveState; } /** * @notice Update the public mint price for a given token */ function setTokenPublicPrice(uint256 _tokenId, uint256 _publicPrice) external onlyOwner { tokenPublicPrice[_tokenId] = _publicPrice; } /** * @notice Set the maximum public mints allowed per a given address for a given token */ function setTokenPublicMintsAllowedPerAddress( uint256 _tokenId, uint256 _mintsAllowed ) external onlyOwner { tokenPublicMintsPerAddress[_tokenId] = _mintsAllowed; } /** * @notice Update the start time for public mint for a given token */ function setTokenPublicSaleStartTime( uint256 _tokenId, uint256 _publicSaleStartTime ) external onlyOwner { require(_publicSaleStartTime > block.timestamp, "TIME_IN_PAST"); tokenPublicSaleStartTime[_tokenId] = _publicSaleStartTime; } /** * @notice Update the end time for public mint for a given token */ function setTokenPublicSaleEndTime( uint256 _tokenId, uint256 _publicSaleEndTime ) external onlyOwner { require(_publicSaleEndTime > block.timestamp, "TIME_IN_PAST"); tokenPublicSaleEndTime[_tokenId] = _publicSaleEndTime; } /** * @notice Update whether or not to use the automatic public sale times for a given token */ function setTokenUsePublicSaleTimes( uint256 _tokenId, bool _usePublicSaleTimes ) external onlyOwner { require( tokenUsePublicSaleTimes[_tokenId] != _usePublicSaleTimes, "NEW_STATE_IDENTICAL_TO_OLD_STATE" ); tokenUsePublicSaleTimes[_tokenId] = _usePublicSaleTimes; } /** * @notice Returns if public sale times are active for a given token */ function tokenPublicSaleTimeIsActive(uint256 _tokenId) public view returns (bool) { if (tokenUsePublicSaleTimes[_tokenId] == false) { return true; } return block.timestamp >= tokenPublicSaleStartTime[_tokenId] && block.timestamp <= tokenPublicSaleEndTime[_tokenId]; } /** * @notice Allow for public minting of tokens for a given token */ function mintToken(uint256 _tokenId, uint256 _numTokens) external payable originalUser nonReentrant { require(tokenPublicSaleActive[_tokenId], "PUBLIC_SALE_IS_NOT_ACTIVE"); require( tokenPublicSaleTimeIsActive(_tokenId), "PUBLIC_SALE_TIME_IS_NOT_ACTIVE" ); require( tokenPublicMintsPerAddress[_tokenId] == 0 || tokensMintedByAddress[msg.sender][_tokenId] + _numTokens <= tokenPublicMintsPerAddress[_tokenId], "MAX_MINTS_FOR_ADDRESS_EXCEEDED" ); require( tokenMaxSupply[_tokenId] == 0 || totalSupply(_tokenId) + _numTokens <= tokenMaxSupply[_tokenId], "MAX_SUPPLY_EXCEEDED" ); require( msg.value == tokenPublicPrice[_tokenId] * _numTokens, "PAYMENT_INCORRECT" ); require( !tokenMintingPermanentlyDisabled[_tokenId], "MINTING_PERMANENTLY_DISABLED" ); tokensMintedByAddress[msg.sender][_tokenId] += _numTokens; _mint(msg.sender, _tokenId, _numTokens, ""); if ( tokenMaxSupply[_tokenId] != 0 && totalSupply(_tokenId) >= tokenMaxSupply[_tokenId] ) { tokenPublicSaleActive[_tokenId] = false; } } /** * @notice Set the signer address used to verify presale minting */ function setPresaleSignerAddress(address _presaleSignerAddress) external onlyOwner { require(_presaleSignerAddress != address(0)); presaleSignerAddress = _presaleSignerAddress; } /** * @notice To be updated by contract owner to allow presale minting for a given token */ function setTokenPresaleState(uint256 _tokenId, bool _saleActiveState) external onlyOwner { require( tokenPresaleSaleActive[_tokenId] != _saleActiveState, "NEW_STATE_IDENTICAL_TO_OLD_STATE" ); tokenPresaleSaleActive[_tokenId] = _saleActiveState; } /** * @notice Update the presale mint price for a given token */ function setTokenPresalePrice(uint256 _tokenId, uint256 _presalePrice) external onlyOwner { tokenPresalePrice[_tokenId] = _presalePrice; } /** * @notice Set the maximum presale mints allowed per a given address for a given token */ function setTokenPresaleMintsAllowedPerAddress( uint256 _tokenId, uint256 _mintsAllowed ) external onlyOwner { tokenPresaleMintsPerAddress[_tokenId] = _mintsAllowed; } /** * @notice Reduce the presale max supply of tokens for a given token id * @param _newPresaleMaxSupply The new maximum supply of tokens available to mint * @param _tokenId The token id to reduce the max supply for */ function reducePresaleMaxSupply( uint256 _tokenId, uint256 _newPresaleMaxSupply ) external onlyOwner { require( tokenPresaleMaxSupply[_tokenId] == 0 || _newPresaleMaxSupply < tokenPresaleMaxSupply[_tokenId], "NEW_MAX_SUPPLY_TOO_HIGH" ); tokenPresaleMaxSupply[_tokenId] = _newPresaleMaxSupply; } /** * @notice Update the start time for presale mint for a given token */ function setTokenPresaleStartTime( uint256 _tokenId, uint256 _presaleStartTime ) external onlyOwner { require(_presaleStartTime > block.timestamp, "TIME_IN_PAST"); tokenPresaleSaleStartTime[_tokenId] = _presaleStartTime; } /** * @notice Update the end time for presale mint for a given token */ function setTokenPresaleEndTime(uint256 _tokenId, uint256 _presaleEndTime) external onlyOwner { require(_presaleEndTime > block.timestamp, "TIME_IN_PAST"); tokenPresaleSaleEndTime[_tokenId] = _presaleEndTime; } /** * @notice Update whether or not to use the automatic presale times for a given token */ function setTokenUsePresaleTimes(uint256 _tokenId, bool _usePresaleTimes) external onlyOwner { require( tokenUsePresaleTimes[_tokenId] != _usePresaleTimes, "NEW_STATE_IDENTICAL_TO_OLD_STATE" ); tokenUsePresaleTimes[_tokenId] = _usePresaleTimes; } /** * @notice Returns if presale times are active for a given token */ function tokenPresaleTimeIsActive(uint256 _tokenId) public view returns (bool) { if (tokenUsePresaleTimes[_tokenId] == false) { return true; } return block.timestamp >= tokenPresaleSaleStartTime[_tokenId] && block.timestamp <= tokenPresaleSaleEndTime[_tokenId]; } /** * @notice Verify that a signed message is validly signed by the presaleSignerAddress */ function verifySignerAddress( bytes32 _messageHash, bytes calldata _signature ) private view returns (bool) { return presaleSignerAddress == _messageHash.toEthSignedMessageHash().recover(_signature); } /** * @notice Allow for allowlist minting of tokens */ function presaleMint( bytes32 _messageHash, bytes calldata _signature, uint256 _tokenId, uint256 _numTokens, uint256 _maximumAllowedMints ) external payable originalUser nonReentrant { require(tokenPresaleSaleActive[_tokenId], "PRESALE_IS_NOT_ACTIVE"); require( tokenPresaleTimeIsActive(_tokenId), "PRESALE_TIME_IS_NOT_ACTIVE" ); require( !tokenMintingPermanentlyDisabled[_tokenId], "MINTING_PERMANENTLY_DISABLED" ); require( tokenPresaleMintsPerAddress[_tokenId] == 0 || tokensMintedByAddress[msg.sender][_tokenId] + _numTokens <= tokenPresaleMintsPerAddress[_tokenId], "MAX_MINTS_PER_ADDRESS_EXCEEDED" ); require( _maximumAllowedMints == 0 || tokensMintedByAddress[msg.sender][_tokenId] + _numTokens <= _maximumAllowedMints, "MAX_MINTS_EXCEEDED" ); require( tokenPresaleMaxSupply[_tokenId] == 0 || totalSupply(_tokenId) + _numTokens <= tokenPresaleMaxSupply[_tokenId], "MAX_SUPPLY_EXCEEDED" ); require( msg.value == tokenPresalePrice[_tokenId] * _numTokens, "PAYMENT_INCORRECT" ); require( keccak256(abi.encode(msg.sender, _maximumAllowedMints, _tokenId)) == _messageHash, "MESSAGE_INVALID" ); require( verifySignerAddress(_messageHash, _signature), "SIGNATURE_VALIDATION_FAILED" ); tokensMintedByAddress[msg.sender][_tokenId] += _numTokens; _mint(msg.sender, _tokenId, _numTokens, ""); if ( tokenPresaleMaxSupply[_tokenId] != 0 && totalSupply(_tokenId) >= tokenPresaleMaxSupply[_tokenId] ) { tokenPresaleSaleActive[_tokenId] = false; } } /** * @notice Freeze all payout addresses and percentages so they can never be changed again */ function freezePayoutAddresses() external onlyOwner { require(!payoutAddressesFrozen, "PAYOUT_ADDRESSES_ALREADY_FROZEN"); payoutAddressesFrozen = true; } /** * @notice Update payout addresses and basis points for each addresses' respective share of contract funds */ function updatePayoutAddressesAndBasisPoints( address[] calldata _payoutAddresses, uint256[] calldata _payoutBasisPoints ) external onlyOwner { require(!payoutAddressesFrozen, "PAYOUT_ADDRESSES_FROZEN"); require( _payoutAddresses.length == _payoutBasisPoints.length, "ARRAY_LENGTHS_MUST_MATCH" ); uint256 totalBasisPoints = 0; for (uint256 i = 0; i < _payoutBasisPoints.length; i++) { totalBasisPoints += _payoutBasisPoints[i]; } require(totalBasisPoints == 10000, "TOTAL_BASIS_POINTS_MUST_BE_10000"); payoutAddresses = _payoutAddresses; payoutBasisPoints = _payoutBasisPoints; } /** * @notice Withdraws all funds held within contract */ function withdraw() external onlyOwner nonReentrant { require(address(this).balance > 0, "CONTRACT_HAS_NO_BALANCE"); uint256 balance = address(this).balance; for (uint256 i = 0; i < payoutAddresses.length; i++) { uint256 amount = (balance * payoutBasisPoints[i]) / 10000; (bool success, ) = payoutAddresses[i].call{value: amount}(""); require(success, "Transfer failed."); } } /** * @notice Change the admin address used to transfer tokens if needed. */ function setSoulboundAdminAddress(address _adminAddress) external onlyOwner { require( !soulbindAdminAddressPermanentlyDisabled, "CHANGING_ADDRESS_DISABLED" ); soulboundAdminAddress = _adminAddress; } /** * @notice Disallow admin transfers of soulbound tokens permanently. */ function disableSoulbindAdminTransfersPermanently() external onlyOwner { soulboundAdminAddress = address(0); soulbindAdminAddressPermanentlyDisabled = true; } /** * @notice Turn token transfers on or off for a given tokenId */ function setTokenTransfersDisabled( uint256 _tokenId, bool _tokenTransfersDisabled ) external onlyOwner { tokenTransfersDisabled[_tokenId] = _tokenTransfersDisabled; } /** * @notice Turn soulbinding on or off for all tokens */ function setAllTokensSoulbound(bool _allTokensSoulbound) external onlyOwner { allTokensSoulbound = _allTokensSoulbound; } /** * @notice Allows an admin address to initiate token transfers if user wallets get hacked or lost * This function can only be used on soulbound tokens to prevent arbitrary transfers of normal tokens */ function adminTransfer( address _from, address _to, uint256 _tokenId, uint256 _amount ) external { require( msg.sender == soulboundAdminAddress, "CAN_ONLY_BE_CALLED_BY_ADMIN" ); soulboundAdminTransferInProgress = true; _safeTransferFrom(_from, _to, _tokenId, _amount, ""); soulboundAdminTransferInProgress = false; } /** * @notice Override default ERC-1155 setApprovalForAll to require that the operator is not from a blocklisted exchange * @param operator Address to add to the set of authorized operators * @param approved True if the operator is approved, false to revoke approval */ function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) { require(!allTokensSoulbound, "TOKEN_SOULBOUND"); super.setApprovalForAll(operator, approved); } function _beforeTokenTransfer( address operator, address from, address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) internal override whenNotPaused { if (from != address(0)) { require( !allTokensSoulbound || soulboundAdminTransferInProgress, "TOKEN_SOULBOUND" ); for (uint256 i = 0; i < ids.length; i++) { require( !tokenTransfersDisabled[ids[i]] || soulboundAdminTransferInProgress, "TOKEN_SOULBOUND" ); } } super._beforeTokenTransfer(operator, from, to, ids, amounts, data); } /** * @notice Override ERC1155 such that zero amount token transfers are disallowed. * This prevents arbitrary 'creation' of new tokens in the collection by anyone. */ function safeTransferFrom( address from, address to, uint256 tokenId, uint256 amount, bytes memory data ) public override onlyAllowedOperator(from) { require(amount > 0, "AMOUNT_CANNOT_BE_ZERO"); super.safeTransferFrom(from, to, tokenId, amount, data); } function safeBatchTransferFrom( address from, address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) public virtual override onlyAllowedOperator(from) { super.safeBatchTransferFrom(from, to, ids, amounts, data); } function owner() public view virtual override(Ownable, UpdatableOperatorFilterer) returns (address) { return Ownable.owner(); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.3) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\\x19Ethereum Signed Message:\ 32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\\x19Ethereum Signed Message:\ ", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\\x19\\x01", domainSeparator, structHash)); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC1155/extensions/ERC1155Supply.sol) pragma solidity ^0.8.0; import "../ERC1155.sol"; /** * @dev Extension of ERC1155 that adds tracking of total supply per id. * * Useful for scenarios where Fungible and Non-fungible tokens have to be * clearly identified. Note: While a totalSupply of 1 might mean the * corresponding is an NFT, there is no guarantees that no other token with the * same id are not going to be minted. */ abstract contract ERC1155Supply is ERC1155 { mapping(uint256 => uint256) private _totalSupply; /** * @dev Total amount of tokens in with a given id. */ function totalSupply(uint256 id) public view virtual returns (uint256) { return _totalSupply[id]; } /** * @dev Indicates whether any token exist with a given id, or not. */ function exists(uint256 id) public view virtual returns (bool) { return ERC1155Supply.totalSupply(id) > 0; } /** * @dev See {ERC1155-_beforeTokenTransfer}. */ function _beforeTokenTransfer( address operator, address from, address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) internal virtual override { super._beforeTokenTransfer(operator, from, to, ids, amounts, data); if (from == address(0)) { for (uint256 i = 0; i < ids.length; ++i) { _totalSupply[ids[i]] += amounts[i]; } } if (to == address(0)) { for (uint256 i = 0; i < ids.length; ++i) { uint256 id = ids[i]; uint256 amount = amounts[i]; uint256 supply = _totalSupply[id]; require(supply >= amount, "ERC1155: burn amount exceeds totalSupply"); unchecked { _totalSupply[id] = supply - amount; } } } } } // 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 v4.7.0) (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @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 is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @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 { require(!paused(), "Pausable: paused"); } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { require(paused(), "Pausable: not paused"); } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/common/ERC2981.sol) pragma solidity ^0.8.0; import "../../interfaces/IERC2981.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of the NFT Royalty Standard, a standardized way to retrieve royalty payment information. * * Royalty information can be specified globally for all token ids via {_setDefaultRoyalty}, and/or individually for * specific token ids via {_setTokenRoyalty}. The latter takes precedence over the first. * * Royalty is specified as a fraction of sale price. {_feeDenominator} is overridable but defaults to 10000, meaning the * fee is specified in basis points by default. * * IMPORTANT: ERC-2981 only specifies a way to signal royalty information and does not enforce its payment. See * https://eips.ethereum.org/EIPS/eip-2981#optional-royalty-payments[Rationale] in the EIP. Marketplaces are expected to * voluntarily pay royalties together with sales, but note that this standard is not yet widely supported. * * _Available since v4.5._ */ abstract contract ERC2981 is IERC2981, ERC165 { struct RoyaltyInfo { address receiver; uint96 royaltyFraction; } RoyaltyInfo private _defaultRoyaltyInfo; mapping(uint256 => RoyaltyInfo) private _tokenRoyaltyInfo; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) { return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId); } /** * @inheritdoc IERC2981 */ function royaltyInfo(uint256 _tokenId, uint256 _salePrice) public view virtual override returns (address, uint256) { RoyaltyInfo memory royalty = _tokenRoyaltyInfo[_tokenId]; if (royalty.receiver == address(0)) { royalty = _defaultRoyaltyInfo; } uint256 royaltyAmount = (_salePrice * royalty.royaltyFraction) / _feeDenominator(); return (royalty.receiver, royaltyAmount); } /** * @dev The denominator with which to interpret the fee set in {_setTokenRoyalty} and {_setDefaultRoyalty} as a * fraction of the sale price. Defaults to 10000 so fees are expressed in basis points, but may be customized by an * override. */ function _feeDenominator() internal pure virtual returns (uint96) { return 10000; } /** * @dev Sets the royalty information that all ids in this contract will default to. * * Requirements: * * - `receiver` cannot be the zero address. * - `feeNumerator` cannot be greater than the fee denominator. */ function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual { require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice"); require(receiver != address(0), "ERC2981: invalid receiver"); _defaultRoyaltyInfo = RoyaltyInfo(receiver, feeNumerator); } /** * @dev Removes default royalty information. */ function _deleteDefaultRoyalty() internal virtual { delete _defaultRoyaltyInfo; } /** * @dev Sets the royalty information for a specific token id, overriding the global default. * * Requirements: * * - `receiver` cannot be the zero address. * - `feeNumerator` cannot be greater than the fee denominator. */ function _setTokenRoyalty( uint256 tokenId, address receiver, uint96 feeNumerator ) internal virtual { require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice"); require(receiver != address(0), "ERC2981: Invalid parameters"); _tokenRoyaltyInfo[tokenId] = RoyaltyInfo(receiver, feeNumerator); } /** * @dev Resets royalty information for the token id back to the global default. */ function _resetTokenRoyalty(uint256 tokenId) internal virtual { delete _tokenRoyaltyInfo[tokenId]; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {UpdatableOperatorFilterer} from "./UpdatableOperatorFilterer.sol"; import {IOperatorFilterRegistry} from "./IOperatorFilterRegistry.sol"; /** * @title RevokableOperatorFilterer * @notice This contract is meant to allow contracts to permanently skip OperatorFilterRegistry checks if desired. The * Registry itself has an "unregister" function, but if the contract is ownable, the owner can re-register at * any point. As implemented, this abstract contract allows the contract owner to permanently skip the * OperatorFilterRegistry checks by calling revokeOperatorFilterRegistry. Once done, the registry * address cannot be further updated. * Note that OpenSea will still disable creator fee enforcement if filtered operators begin fulfilling orders * on-chain, eg, if the registry is revoked or bypassed. */ abstract contract RevokableOperatorFilterer is UpdatableOperatorFilterer { error RegistryHasBeenRevoked(); error InitialRegistryAddressCannotBeZeroAddress(); bool public isOperatorFilterRegistryRevoked; constructor(address _registry, address subscriptionOrRegistrantToCopy, bool subscribe) UpdatableOperatorFilterer(_registry, subscriptionOrRegistrantToCopy, subscribe) { // don't allow creating a contract with a permanently revoked registry if (_registry == address(0)) { revert InitialRegistryAddressCannotBeZeroAddress(); } } function _checkFilterOperator(address operator) internal view virtual override { if (address(operatorFilterRegistry) != address(0)) { super._checkFilterOperator(operator); } } /** * @notice Update the address that the contract will make OperatorFilter checks against. When set to the zero * address, checks will be permanently bypassed, and the address cannot be updated again. OnlyOwner. */ function updateOperatorFilterRegistryAddress(address newRegistry) public override { if (msg.sender != owner()) { revert OnlyOwner(); } // if registry has been revoked, do not allow further updates if (isOperatorFilterRegistryRevoked) { revert RegistryHasBeenRevoked(); } operatorFilterRegistry = IOperatorFilterRegistry(newRegistry); } /** * @notice Revoke the OperatorFilterRegistry address, permanently bypassing checks. OnlyOwner. */ function revokeOperatorFilterRegistry() public { if (msg.sender != owner()) { revert OnlyOwner(); } // if registry has been revoked, do not allow further updates if (isOperatorFilterRegistryRevoked) { revert RegistryHasBeenRevoked(); } // set to zero address to bypass checks operatorFilterRegistry = IOperatorFilterRegistry(address(0)); isOperatorFilterRegistryRevoked = true; } } // 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 v4.7.0) (token/ERC1155/ERC1155.sol) pragma solidity ^0.8.0; import "./IERC1155.sol"; import "./IERC1155Receiver.sol"; import "./extensions/IERC1155MetadataURI.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of the basic standard multi-token. * See https://eips.ethereum.org/EIPS/eip-1155 * Originally based on code by Enjin: https://github.com/enjin/erc-1155 * * _Available since v3.1._ */ contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI { using Address for address; // Mapping from token ID to account balances mapping(uint256 => mapping(address => uint256)) private _balances; // Mapping from account to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; // Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json string private _uri; /** * @dev See {_setURI}. */ constructor(string memory uri_) { _setURI(uri_); } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC1155).interfaceId || interfaceId == type(IERC1155MetadataURI).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC1155MetadataURI-uri}. * * This implementation returns the same URI for *all* token types. It relies * on the token type ID substitution mechanism * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP]. * * Clients calling this function must replace the `\\{id\\}` substring with the * actual token type ID. */ function uri(uint256) public view virtual override returns (string memory) { return _uri; } /** * @dev See {IERC1155-balanceOf}. * * Requirements: * * - `account` cannot be the zero address. */ function balanceOf(address account, uint256 id) public view virtual override returns (uint256) { require(account != address(0), "ERC1155: address zero is not a valid owner"); return _balances[id][account]; } /** * @dev See {IERC1155-balanceOfBatch}. * * Requirements: * * - `accounts` and `ids` must have the same length. */ function balanceOfBatch(address[] memory accounts, uint256[] memory ids) public view virtual override returns (uint256[] memory) { require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch"); uint256[] memory batchBalances = new uint256[](accounts.length); for (uint256 i = 0; i < accounts.length; ++i) { batchBalances[i] = balanceOf(accounts[i], ids[i]); } return batchBalances; } /** * @dev See {IERC1155-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC1155-isApprovedForAll}. */ function isApprovedForAll(address account, address operator) public view virtual override returns (bool) { return _operatorApprovals[account][operator]; } /** * @dev See {IERC1155-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 id, uint256 amount, bytes memory data ) public virtual override { require( from == _msgSender() || isApprovedForAll(from, _msgSender()), "ERC1155: caller is not token owner nor approved" ); _safeTransferFrom(from, to, id, amount, data); } /** * @dev See {IERC1155-safeBatchTransferFrom}. */ function safeBatchTransferFrom( address from, address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) public virtual override { require( from == _msgSender() || isApprovedForAll(from, _msgSender()), "ERC1155: caller is not token owner nor approved" ); _safeBatchTransferFrom(from, to, ids, amounts, data); } /** * @dev Transfers `amount` tokens of token type `id` from `from` to `to`. * * Emits a {TransferSingle} event. * * Requirements: * * - `to` cannot be the zero address. * - `from` must have a balance of tokens of type `id` of at least `amount`. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the * acceptance magic value. */ function _safeTransferFrom( address from, address to, uint256 id, uint256 amount, bytes memory data ) internal virtual { require(to != address(0), "ERC1155: transfer to the zero address"); address operator = _msgSender(); uint256[] memory ids = _asSingletonArray(id); uint256[] memory amounts = _asSingletonArray(amount); _beforeTokenTransfer(operator, from, to, ids, amounts, data); uint256 fromBalance = _balances[id][from]; require(fromBalance >= amount, "ERC1155: insufficient balance for transfer"); unchecked { _balances[id][from] = fromBalance - amount; } _balances[id][to] += amount; emit TransferSingle(operator, from, to, id, amount); _afterTokenTransfer(operator, from, to, ids, amounts, data); _doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data); } /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}. * * Emits a {TransferBatch} event. * * Requirements: * * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the * acceptance magic value. */ function _safeBatchTransferFrom( address from, address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) internal virtual { require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); require(to != address(0), "ERC1155: transfer to the zero address"); address operator = _msgSender(); _beforeTokenTransfer(operator, from, to, ids, amounts, data); for (uint256 i = 0; i < ids.length; ++i) { uint256 id = ids[i]; uint256 amount = amounts[i]; uint256 fromBalance = _balances[id][from]; require(fromBalance >= amount, "ERC1155: insufficient balance for transfer"); unchecked { _balances[id][from] = fromBalance - amount; } _balances[id][to] += amount; } emit TransferBatch(operator, from, to, ids, amounts); _afterTokenTransfer(operator, from, to, ids, amounts, data); _doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data); } /** * @dev Sets a new URI for all token types, by relying on the token type ID * substitution mechanism * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP]. * * By this mechanism, any occurrence of the `\\{id\\}` substring in either the * URI or any of the amounts in the JSON file at said URI will be replaced by * clients with the token type ID. * * For example, the `https://token-cdn-domain/\\{id\\}.json` URI would be * interpreted by clients as * `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json` * for token type ID 0x4cce0. * * See {uri}. * * Because these URIs cannot be meaningfully represented by the {URI} event, * this function emits no events. */ function _setURI(string memory newuri) internal virtual { _uri = newuri; } /** * @dev Creates `amount` tokens of token type `id`, and assigns them to `to`. * * Emits a {TransferSingle} event. * * Requirements: * * - `to` cannot be the zero address. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the * acceptance magic value. */ function _mint( address to, uint256 id, uint256 amount, bytes memory data ) internal virtual { require(to != address(0), "ERC1155: mint to the zero address"); address operator = _msgSender(); uint256[] memory ids = _asSingletonArray(id); uint256[] memory amounts = _asSingletonArray(amount); _beforeTokenTransfer(operator, address(0), to, ids, amounts, data); _balances[id][to] += amount; emit TransferSingle(operator, address(0), to, id, amount); _afterTokenTransfer(operator, address(0), to, ids, amounts, data); _doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data); } /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}. * * Emits a {TransferBatch} event. * * Requirements: * * - `ids` and `amounts` must have the same length. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the * acceptance magic value. */ function _mintBatch( address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) internal virtual { require(to != address(0), "ERC1155: mint to the zero address"); require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); address operator = _msgSender(); _beforeTokenTransfer(operator, address(0), to, ids, amounts, data); for (uint256 i = 0; i < ids.length; i++) { _balances[ids[i]][to] += amounts[i]; } emit TransferBatch(operator, address(0), to, ids, amounts); _afterTokenTransfer(operator, address(0), to, ids, amounts, data); _doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data); } /** * @dev Destroys `amount` tokens of token type `id` from `from` * * Emits a {TransferSingle} event. * * Requirements: * * - `from` cannot be the zero address. * - `from` must have at least `amount` tokens of token type `id`. */ function _burn( address from, uint256 id, uint256 amount ) internal virtual { require(from != address(0), "ERC1155: burn from the zero address"); address operator = _msgSender(); uint256[] memory ids = _asSingletonArray(id); uint256[] memory amounts = _asSingletonArray(amount); _beforeTokenTransfer(operator, from, address(0), ids, amounts, ""); uint256 fromBalance = _balances[id][from]; require(fromBalance >= amount, "ERC1155: burn amount exceeds balance"); unchecked { _balances[id][from] = fromBalance - amount; } emit TransferSingle(operator, from, address(0), id, amount); _afterTokenTransfer(operator, from, address(0), ids, amounts, ""); } /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}. * * Emits a {TransferBatch} event. * * Requirements: * * - `ids` and `amounts` must have the same length. */ function _burnBatch( address from, uint256[] memory ids, uint256[] memory amounts ) internal virtual { require(from != address(0), "ERC1155: burn from the zero address"); require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); address operator = _msgSender(); _beforeTokenTransfer(operator, from, address(0), ids, amounts, ""); for (uint256 i = 0; i < ids.length; i++) { uint256 id = ids[i]; uint256 amount = amounts[i]; uint256 fromBalance = _balances[id][from]; require(fromBalance >= amount, "ERC1155: burn amount exceeds balance"); unchecked { _balances[id][from] = fromBalance - amount; } } emit TransferBatch(operator, from, address(0), ids, amounts); _afterTokenTransfer(operator, from, address(0), ids, amounts, ""); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits an {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC1155: setting approval status for self"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Hook that is called before any token transfer. This includes minting * and burning, as well as batched variants. * * The same hook is called on both single and batched variants. For single * transfers, the length of the `ids` and `amounts` arrays will be 1. * * Calling conditions (for each `id` and `amount` pair): * * - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens * of token type `id` will be transferred to `to`. * - When `from` is zero, `amount` tokens of token type `id` will be minted * for `to`. * - when `to` is zero, `amount` of ``from``'s tokens of token type `id` * will be burned. * - `from` and `to` are never both zero. * - `ids` and `amounts` have the same, non-zero length. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address operator, address from, address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) internal virtual {} /** * @dev Hook that is called after any token transfer. This includes minting * and burning, as well as batched variants. * * The same hook is called on both single and batched variants. For single * transfers, the length of the `id` and `amount` arrays will be 1. * * Calling conditions (for each `id` and `amount` pair): * * - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens * of token type `id` will be transferred to `to`. * - When `from` is zero, `amount` tokens of token type `id` will be minted * for `to`. * - when `to` is zero, `amount` of ``from``'s tokens of token type `id` * will be burned. * - `from` and `to` are never both zero. * - `ids` and `amounts` have the same, non-zero length. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address operator, address from, address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) internal virtual {} function _doSafeTransferAcceptanceCheck( address operator, address from, address to, uint256 id, uint256 amount, bytes memory data ) private { if (to.isContract()) { try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) { if (response != IERC1155Receiver.onERC1155Received.selector) { revert("ERC1155: ERC1155Receiver rejected tokens"); } } catch Error(string memory reason) { revert(reason); } catch { revert("ERC1155: transfer to non ERC1155Receiver implementer"); } } } function _doSafeBatchTransferAcceptanceCheck( address operator, address from, address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) private { if (to.isContract()) { try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns ( bytes4 response ) { if (response != IERC1155Receiver.onERC1155BatchReceived.selector) { revert("ERC1155: ERC1155Receiver rejected tokens"); } } catch Error(string memory reason) { revert(reason); } catch { revert("ERC1155: transfer to non ERC1155Receiver implementer"); } } } function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) { uint256[] memory array = new uint256[](1); array[0] = element; return array; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol) pragma solidity ^0.8.0; import "../utils/introspection/IERC165.sol"; /** * @dev Interface for the NFT Royalty Standard. * * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal * support for royalty payments across all NFT marketplaces and ecosystem participants. * * _Available since v4.5._ */ interface IERC2981 is IERC165 { /** * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of * exchange. The royalty amount is denominated and should be paid in that same unit of exchange. */ function royaltyInfo(uint256 tokenId, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts 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 (last updated v4.7.0) (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_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) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev 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 ^0.8.13; import {IOperatorFilterRegistry} from "./IOperatorFilterRegistry.sol"; /** * @title UpdatableOperatorFilterer * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another * registrant's entries in the OperatorFilterRegistry. This contract allows the Owner to update the * OperatorFilterRegistry address via updateOperatorFilterRegistryAddress, including to the zero address, * which will bypass registry checks. * Note that OpenSea will still disable creator fee enforcement if filtered operators begin fulfilling orders * on-chain, eg, if the registry is revoked or bypassed. * @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 UpdatableOperatorFilterer { error OperatorNotAllowed(address operator); error OnlyOwner(); IOperatorFilterRegistry public operatorFilterRegistry; constructor(address _registry, address subscriptionOrRegistrantToCopy, bool subscribe) { IOperatorFilterRegistry registry = IOperatorFilterRegistry(_registry); operatorFilterRegistry = registry; // If an inheriting token contract is deployed to a network without the registry deployed, the modifier // will not revert, but the contract will need to be registered with the registry once it is deployed in // order for the modifier to filter addresses. if (address(registry).code.length > 0) { if (subscribe) { registry.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy); } else { if (subscriptionOrRegistrantToCopy != address(0)) { registry.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy); } else { registry.register(address(this)); } } } } 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); _; } /** * @notice Update the address that the contract will make OperatorFilter checks against. When set to the zero * address, checks will be bypassed. OnlyOwner. */ function updateOperatorFilterRegistryAddress(address newRegistry) public virtual { if (msg.sender != owner()) { revert OnlyOwner(); } operatorFilterRegistry = IOperatorFilterRegistry(newRegistry); } /** * @dev assume the contract has an owner, but leave specific Ownable implementation up to inheriting contract */ function owner() public view virtual returns (address); function _checkFilterOperator(address operator) internal view virtual { IOperatorFilterRegistry registry = operatorFilterRegistry; // Check registry code length to facilitate testing in environments without a deployed registry. if (address(registry) != address(0) && address(registry).code.length > 0) { if (!registry.isOperatorAllowed(address(this), operator)) { revert OperatorNotAllowed(operator); } } } } // 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: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC1155/IERC1155.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC1155 compliant contract, as defined in the * https://eips.ethereum.org/EIPS/eip-1155[EIP]. * * _Available since v3.1._ */ interface IERC1155 is IERC165 { /** * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`. */ event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value); /** * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all * transfers. */ event TransferBatch( address indexed operator, address indexed from, address indexed to, uint256[] ids, uint256[] values ); /** * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to * `approved`. */ event ApprovalForAll(address indexed account, address indexed operator, bool approved); /** * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI. * * If an {URI} event was emitted for `id`, the standard * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value * returned by {IERC1155MetadataURI-uri}. */ event URI(string value, uint256 indexed id); /** * @dev Returns the amount of tokens of token type `id` owned by `account`. * * Requirements: * * - `account` cannot be the zero address. */ function balanceOf(address account, uint256 id) external view returns (uint256); /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}. * * Requirements: * * - `accounts` and `ids` must have the same length. */ function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids) external view returns (uint256[] memory); /** * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`, * * Emits an {ApprovalForAll} event. * * Requirements: * * - `operator` cannot be the caller. */ function setApprovalForAll(address operator, bool approved) external; /** * @dev Returns true if `operator` is approved to transfer ``account``'s tokens. * * See {setApprovalForAll}. */ function isApprovedForAll(address account, address operator) external view returns (bool); /** * @dev Transfers `amount` tokens of token type `id` from `from` to `to`. * * Emits a {TransferSingle} event. * * Requirements: * * - `to` cannot be the zero address. * - If the caller is not `from`, it must have been approved to spend ``from``'s tokens via {setApprovalForAll}. * - `from` must have a balance of tokens of type `id` of at least `amount`. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the * acceptance magic value. */ function safeTransferFrom( address from, address to, uint256 id, uint256 amount, bytes calldata data ) external; /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}. * * Emits a {TransferBatch} event. * * Requirements: * * - `ids` and `amounts` must have the same length. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the * acceptance magic value. */ function safeBatchTransferFrom( address from, address to, uint256[] calldata ids, uint256[] calldata amounts, bytes calldata data ) external; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev _Available since v3.1._ */ interface IERC1155Receiver is IERC165 { /** * @dev Handles the receipt of a single ERC1155 token type. This function is * called at the end of a `safeTransferFrom` after the balance has been updated. * * NOTE: To accept the transfer, this must return * `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` * (i.e. 0xf23a6e61, or its own function selector). * * @param operator The address which initiated the transfer (i.e. msg.sender) * @param from The address which previously owned the token * @param id The ID of the token being transferred * @param value The amount of tokens being transferred * @param data Additional data with no specified format * @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed */ function onERC1155Received( address operator, address from, uint256 id, uint256 value, bytes calldata data ) external returns (bytes4); /** * @dev Handles the receipt of a multiple ERC1155 token types. This function * is called at the end of a `safeBatchTransferFrom` after the balances have * been updated. * * NOTE: To accept the transfer(s), this must return * `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` * (i.e. 0xbc197c81, or its own function selector). * * @param operator The address which initiated the batch transfer (i.e. msg.sender) * @param from The address which previously owned the token * @param ids An array containing ids of each token being transferred (order and length must match values array) * @param values An array containing amounts of each token being transferred (order and length must match ids array) * @param data Additional data with no specified format * @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed */ function onERC1155BatchReceived( address operator, address from, uint256[] calldata ids, uint256[] calldata values, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol) pragma solidity ^0.8.0; import "../IERC1155.sol"; /** * @dev Interface of the optional ERC1155MetadataExtension interface, as defined * in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP]. * * _Available since v3.1._ */ interface IERC1155MetadataURI is IERC1155 { /** * @dev Returns the URI for token type `id`. * * If the `\\{id\\}` substring is present in the URI, it must be replaced by * clients with the actual token type ID. */ function uri(uint256 id) external view returns (string memory); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (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 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 /// @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/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); }