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ERC-1155
Overview
Max Total Supply
2,172
Holders
1,460
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
UnixDays
Compiler Version
v0.8.6+commit.11564f7e
Optimization Enabled:
Yes with 10000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.6; import "@openzeppelin/contracts/token/ERC1155/extensions/ERC1155Supply.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import "../libraries/DateTime.sol"; import { Base64 } from "base64-sol/base64.sol"; /// @title Unix Days /// @author Jake Allen contract UnixDays is ERC1155Supply, Ownable { using Strings for uint256; // SVG elements string private svgPart1 = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 800 800"><rect width="100%" height="100%" fill="#'; string private svgPart2 = '"/></svg>'; constructor() ERC1155("") {} /// @notice return token metadata function uri(uint256 tokenId) public view virtual override returns (string memory) { require(exists(tokenId), "Nonexistent token"); string memory name = string(abi.encodePacked('Day ', tokenId.toString())); string memory description = ''; string memory color = getHexColor(tokenId); string memory encodedSVG = getEncodedSVG(color); string memory base64 = Base64.encode(abi.encodePacked( '{"name":"', name, '", "description":"', description, '", "image":"data:image/svg+xml;base64,', encodedSVG, '", "attributes":[{"trait_type":"Color","value":"#', color,'"}]''}' )); return string(abi.encodePacked('data:application/json;base64,', base64)); } /// @notice mint today's color function mint() external { uint256 daysSinceEpoch = getDaysSinceEpoch(); // receiving address, tokenId, quantity, data (none) _mint(msg.sender, daysSinceEpoch, 1, ""); } /// @notice number of days since unix epoch in UTC function getDaysSinceEpoch() public view returns (uint256) { (uint256 year, uint256 month, uint256 day) = BokkyPooBahsDateTimeLibrary .timestampToDate(block.timestamp); return BokkyPooBahsDateTimeLibrary._daysFromDate(year, month, day); } /// @notice get base64 encoded svg for a given color function getEncodedSVG(string memory color) public view returns (string memory) { return Base64.encode(abi.encodePacked( svgPart1, color, svgPart2 )); } /// @notice get a hex color for a given day function getHexColor(uint256 day) public pure returns (string memory) { // get deterministic bytes bytes32 hashBytes = keccak256((abi.encodePacked(day))); // return string of first 3 bytes return string(bytes32ToHexString(hashBytes)); } /// @notice get literal string representation of first 6 bytes of bytes32 string function bytes32ToHexString(bytes32 data) public pure returns (string memory) { bytes memory temp = new bytes(6); uint256 count; for (uint256 i = 0; i < 3; i++) { bytes1 currentByte = bytes1(data << (i * 8)); uint8 c1 = uint8( bytes1((currentByte << 4) >> 4) ); uint8 c2 = uint8( bytes1((currentByte >> 4)) ); if (c2 >= 0 && c2 <= 9) temp[count++] = bytes1(c2 + 48); else temp[count++] = bytes1(c2 + 87); if (c1 >= 0 && c1 <= 9) temp[count++] = bytes1(c1 + 48); else temp[count++] = bytes1(c1 + 87); } return string(temp); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (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) { _totalSupply[ids[i]] -= amounts[i]; } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.9.0; // ---------------------------------------------------------------------------- // BokkyPooBah's DateTime Library v1.01 // // A gas-efficient Solidity date and time library // // https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary // // Tested date range 1970/01/01 to 2345/12/31 // // Conventions: // Unit | Range | Notes // :-------- |:-------------:|:----- // timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC // year | 1970 ... 2345 | // month | 1 ... 12 | // day | 1 ... 31 | // hour | 0 ... 23 | // minute | 0 ... 59 | // second | 0 ... 59 | // dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday // // // Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence. // ---------------------------------------------------------------------------- library BokkyPooBahsDateTimeLibrary { uint constant SECONDS_PER_DAY = 24 * 60 * 60; uint constant SECONDS_PER_HOUR = 60 * 60; uint constant SECONDS_PER_MINUTE = 60; int constant OFFSET19700101 = 2440588; uint constant DOW_MON = 1; uint constant DOW_TUE = 2; uint constant DOW_WED = 3; uint constant DOW_THU = 4; uint constant DOW_FRI = 5; uint constant DOW_SAT = 6; uint constant DOW_SUN = 7; // ------------------------------------------------------------------------ // Calculate the number of days from 1970/01/01 to year/month/day using // the date conversion algorithm from // http://aa.usno.navy.mil/faq/docs/JD_Formula.php // and subtracting the offset 2440588 so that 1970/01/01 is day 0 // // days = day // - 32075 // + 1461 * (year + 4800 + (month - 14) / 12) / 4 // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12 // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4 // - offset // ------------------------------------------------------------------------ function _daysFromDate(uint year, uint month, uint day) internal pure returns (uint _days) { require(year >= 1970); int _year = int(year); int _month = int(month); int _day = int(day); int __days = _day - 32075 + 1461 * (_year + 4800 + (_month - 14) / 12) / 4 + 367 * (_month - 2 - (_month - 14) / 12 * 12) / 12 - 3 * ((_year + 4900 + (_month - 14) / 12) / 100) / 4 - OFFSET19700101; _days = uint(__days); } // ------------------------------------------------------------------------ // Calculate year/month/day from the number of days since 1970/01/01 using // the date conversion algorithm from // http://aa.usno.navy.mil/faq/docs/JD_Formula.php // and adding the offset 2440588 so that 1970/01/01 is day 0 // // int L = days + 68569 + offset // int N = 4 * L / 146097 // L = L - (146097 * N + 3) / 4 // year = 4000 * (L + 1) / 1461001 // L = L - 1461 * year / 4 + 31 // month = 80 * L / 2447 // dd = L - 2447 * month / 80 // L = month / 11 // month = month + 2 - 12 * L // year = 100 * (N - 49) + year + L // ------------------------------------------------------------------------ function _daysToDate(uint _days) internal pure returns (uint year, uint month, uint day) { int __days = int(_days); int L = __days + 68569 + OFFSET19700101; int N = 4 * L / 146097; L = L - (146097 * N + 3) / 4; int _year = 4000 * (L + 1) / 1461001; L = L - 1461 * _year / 4 + 31; int _month = 80 * L / 2447; int _day = L - 2447 * _month / 80; L = _month / 11; _month = _month + 2 - 12 * L; _year = 100 * (N - 49) + _year + L; year = uint(_year); month = uint(_month); day = uint(_day); } function timestampFromDate(uint year, uint month, uint day) internal pure returns (uint timestamp) { timestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY; } function timestampFromDateTime(uint year, uint month, uint day, uint hour, uint minute, uint second) internal pure returns (uint timestamp) { timestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + hour * SECONDS_PER_HOUR + minute * SECONDS_PER_MINUTE + second; } function timestampToDate(uint timestamp) internal pure returns (uint year, uint month, uint day) { (year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY); } function timestampToDateTime(uint timestamp) internal pure returns (uint year, uint month, uint day, uint hour, uint minute, uint second) { (year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY); uint secs = timestamp % SECONDS_PER_DAY; hour = secs / SECONDS_PER_HOUR; secs = secs % SECONDS_PER_HOUR; minute = secs / SECONDS_PER_MINUTE; second = secs % SECONDS_PER_MINUTE; } function isValidDate(uint year, uint month, uint day) internal pure returns (bool valid) { if (year >= 1970 && month > 0 && month <= 12) { uint daysInMonth = _getDaysInMonth(year, month); if (day > 0 && day <= daysInMonth) { valid = true; } } } function isValidDateTime(uint year, uint month, uint day, uint hour, uint minute, uint second) internal pure returns (bool valid) { if (isValidDate(year, month, day)) { if (hour < 24 && minute < 60 && second < 60) { valid = true; } } } function isLeapYear(uint timestamp) internal pure returns (bool leapYear) { (uint year,,) = _daysToDate(timestamp / SECONDS_PER_DAY); leapYear = _isLeapYear(year); } function _isLeapYear(uint year) internal pure returns (bool leapYear) { leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0); } function isWeekDay(uint timestamp) internal pure returns (bool weekDay) { weekDay = getDayOfWeek(timestamp) <= DOW_FRI; } function isWeekEnd(uint timestamp) internal pure returns (bool weekEnd) { weekEnd = getDayOfWeek(timestamp) >= DOW_SAT; } function getDaysInMonth(uint timestamp) internal pure returns (uint daysInMonth) { (uint year, uint month,) = _daysToDate(timestamp / SECONDS_PER_DAY); daysInMonth = _getDaysInMonth(year, month); } function _getDaysInMonth(uint year, uint month) internal pure returns (uint daysInMonth) { if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) { daysInMonth = 31; } else if (month != 2) { daysInMonth = 30; } else { daysInMonth = _isLeapYear(year) ? 29 : 28; } } // 1 = Monday, 7 = Sunday function getDayOfWeek(uint timestamp) internal pure returns (uint dayOfWeek) { uint _days = timestamp / SECONDS_PER_DAY; dayOfWeek = (_days + 3) % 7 + 1; } function getYear(uint timestamp) internal pure returns (uint year) { (year,,) = _daysToDate(timestamp / SECONDS_PER_DAY); } function getMonth(uint timestamp) internal pure returns (uint month) { (,month,) = _daysToDate(timestamp / SECONDS_PER_DAY); } function getDay(uint timestamp) internal pure returns (uint day) { (,,day) = _daysToDate(timestamp / SECONDS_PER_DAY); } function getHour(uint timestamp) internal pure returns (uint hour) { uint secs = timestamp % SECONDS_PER_DAY; hour = secs / SECONDS_PER_HOUR; } function getMinute(uint timestamp) internal pure returns (uint minute) { uint secs = timestamp % SECONDS_PER_HOUR; minute = secs / SECONDS_PER_MINUTE; } function getSecond(uint timestamp) internal pure returns (uint second) { second = timestamp % SECONDS_PER_MINUTE; } function addYears(uint timestamp, uint _years) internal pure returns (uint newTimestamp) { (uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY); year += _years; uint daysInMonth = _getDaysInMonth(year, month); if (day > daysInMonth) { day = daysInMonth; } newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY; require(newTimestamp >= timestamp); } function addMonths(uint timestamp, uint _months) internal pure returns (uint newTimestamp) { (uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY); month += _months; year += (month - 1) / 12; month = (month - 1) % 12 + 1; uint daysInMonth = _getDaysInMonth(year, month); if (day > daysInMonth) { day = daysInMonth; } newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY; require(newTimestamp >= timestamp); } function addDays(uint timestamp, uint _days) internal pure returns (uint newTimestamp) { newTimestamp = timestamp + _days * SECONDS_PER_DAY; require(newTimestamp >= timestamp); } function addHours(uint timestamp, uint _hours) internal pure returns (uint newTimestamp) { newTimestamp = timestamp + _hours * SECONDS_PER_HOUR; require(newTimestamp >= timestamp); } function addMinutes(uint timestamp, uint _minutes) internal pure returns (uint newTimestamp) { newTimestamp = timestamp + _minutes * SECONDS_PER_MINUTE; require(newTimestamp >= timestamp); } function addSeconds(uint timestamp, uint _seconds) internal pure returns (uint newTimestamp) { newTimestamp = timestamp + _seconds; require(newTimestamp >= timestamp); } function subYears(uint timestamp, uint _years) internal pure returns (uint newTimestamp) { (uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY); year -= _years; uint daysInMonth = _getDaysInMonth(year, month); if (day > daysInMonth) { day = daysInMonth; } newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY; require(newTimestamp <= timestamp); } function subMonths(uint timestamp, uint _months) internal pure returns (uint newTimestamp) { (uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY); uint yearMonth = year * 12 + (month - 1) - _months; year = yearMonth / 12; month = yearMonth % 12 + 1; uint daysInMonth = _getDaysInMonth(year, month); if (day > daysInMonth) { day = daysInMonth; } newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY; require(newTimestamp <= timestamp); } function subDays(uint timestamp, uint _days) internal pure returns (uint newTimestamp) { newTimestamp = timestamp - _days * SECONDS_PER_DAY; require(newTimestamp <= timestamp); } function subHours(uint timestamp, uint _hours) internal pure returns (uint newTimestamp) { newTimestamp = timestamp - _hours * SECONDS_PER_HOUR; require(newTimestamp <= timestamp); } function subMinutes(uint timestamp, uint _minutes) internal pure returns (uint newTimestamp) { newTimestamp = timestamp - _minutes * SECONDS_PER_MINUTE; require(newTimestamp <= timestamp); } function subSeconds(uint timestamp, uint _seconds) internal pure returns (uint newTimestamp) { newTimestamp = timestamp - _seconds; require(newTimestamp <= timestamp); } function diffYears(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _years) { require(fromTimestamp <= toTimestamp); (uint fromYear,,) = _daysToDate(fromTimestamp / SECONDS_PER_DAY); (uint toYear,,) = _daysToDate(toTimestamp / SECONDS_PER_DAY); _years = toYear - fromYear; } function diffMonths(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _months) { require(fromTimestamp <= toTimestamp); (uint fromYear, uint fromMonth,) = _daysToDate(fromTimestamp / SECONDS_PER_DAY); (uint toYear, uint toMonth,) = _daysToDate(toTimestamp / SECONDS_PER_DAY); _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth; } function diffDays(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _days) { require(fromTimestamp <= toTimestamp); _days = (toTimestamp - fromTimestamp) / SECONDS_PER_DAY; } function diffHours(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _hours) { require(fromTimestamp <= toTimestamp); _hours = (toTimestamp - fromTimestamp) / SECONDS_PER_HOUR; } function diffMinutes(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _minutes) { require(fromTimestamp <= toTimestamp); _minutes = (toTimestamp - fromTimestamp) / SECONDS_PER_MINUTE; } function diffSeconds(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _seconds) { require(fromTimestamp <= toTimestamp); _seconds = toTimestamp - fromTimestamp; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0; /// @title Base64 /// @author Brecht Devos - <[email protected]> /// @notice Provides functions for encoding/decoding base64 library Base64 { string internal constant TABLE_ENCODE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; bytes internal constant TABLE_DECODE = hex"0000000000000000000000000000000000000000000000000000000000000000" hex"00000000000000000000003e0000003f3435363738393a3b3c3d000000000000" hex"00000102030405060708090a0b0c0d0e0f101112131415161718190000000000" hex"001a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132330000000000"; function encode(bytes memory data) internal pure returns (string memory) { if (data.length == 0) return ''; // load the table into memory string memory table = TABLE_ENCODE; // multiply by 4/3 rounded up uint256 encodedLen = 4 * ((data.length + 2) / 3); // add some extra buffer at the end required for the writing string memory result = new string(encodedLen + 32); assembly { // set the actual output length mstore(result, encodedLen) // prepare the lookup table let tablePtr := add(table, 1) // input ptr let dataPtr := data let endPtr := add(dataPtr, mload(data)) // result ptr, jump over length let resultPtr := add(result, 32) // run over the input, 3 bytes at a time for {} lt(dataPtr, endPtr) {} { // read 3 bytes dataPtr := add(dataPtr, 3) let input := mload(dataPtr) // write 4 characters mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F)))) resultPtr := add(resultPtr, 1) mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F)))) resultPtr := add(resultPtr, 1) mstore8(resultPtr, mload(add(tablePtr, and(shr( 6, input), 0x3F)))) resultPtr := add(resultPtr, 1) mstore8(resultPtr, mload(add(tablePtr, and( input, 0x3F)))) resultPtr := add(resultPtr, 1) } // padding with '=' switch mod(mload(data), 3) case 1 { mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) } case 2 { mstore(sub(resultPtr, 1), shl(248, 0x3d)) } } return result; } function decode(string memory _data) internal pure returns (bytes memory) { bytes memory data = bytes(_data); if (data.length == 0) return new bytes(0); require(data.length % 4 == 0, "invalid base64 decoder input"); // load the table into memory bytes memory table = TABLE_DECODE; // every 4 characters represent 3 bytes uint256 decodedLen = (data.length / 4) * 3; // add some extra buffer at the end required for the writing bytes memory result = new bytes(decodedLen + 32); assembly { // padding with '=' let lastBytes := mload(add(data, mload(data))) if eq(and(lastBytes, 0xFF), 0x3d) { decodedLen := sub(decodedLen, 1) if eq(and(lastBytes, 0xFFFF), 0x3d3d) { decodedLen := sub(decodedLen, 1) } } // set the actual output length mstore(result, decodedLen) // prepare the lookup table let tablePtr := add(table, 1) // input ptr let dataPtr := data let endPtr := add(dataPtr, mload(data)) // result ptr, jump over length let resultPtr := add(result, 32) // run over the input, 4 characters at a time for {} lt(dataPtr, endPtr) {} { // read 4 characters dataPtr := add(dataPtr, 4) let input := mload(dataPtr) // write 3 bytes let output := add( add( shl(18, and(mload(add(tablePtr, and(shr(24, input), 0xFF))), 0xFF)), shl(12, and(mload(add(tablePtr, and(shr(16, input), 0xFF))), 0xFF))), add( shl( 6, and(mload(add(tablePtr, and(shr( 8, input), 0xFF))), 0xFF)), and(mload(add(tablePtr, and( input , 0xFF))), 0xFF) ) ) mstore(resultPtr, shl(232, output)) resultPtr := add(resultPtr, 3) } } return result; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (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: balance query for the zero address"); 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 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: transfer caller is not 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(); _beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), 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); _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); _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(); _beforeTokenTransfer(operator, address(0), to, _asSingletonArray(id), _asSingletonArray(amount), data); _balances[id][to] += amount; emit TransferSingle(operator, address(0), to, id, amount); _doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data); } /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}. * * 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); _doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data); } /** * @dev Destroys `amount` tokens of token type `id` from `from` * * 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(); _beforeTokenTransfer(operator, from, address(0), _asSingletonArray(id), _asSingletonArray(amount), ""); 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); } /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}. * * 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); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "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 `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 _beforeTokenTransfer( 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 v4.4.1 (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 be 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 v4.4.1 (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. 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. 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 v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
{ "optimizer": { "enabled": true, "runs": 10000 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256[]","name":"ids","type":"uint256[]"},{"indexed":false,"internalType":"uint256[]","name":"values","type":"uint256[]"}],"name":"TransferBatch","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"TransferSingle","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"value","type":"string"},{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"}],"name":"URI","type":"event"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"accounts","type":"address[]"},{"internalType":"uint256[]","name":"ids","type":"uint256[]"}],"name":"balanceOfBatch","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"data","type":"bytes32"}],"name":"bytes32ToHexString","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"exists","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getDaysSinceEpoch","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"color","type":"string"}],"name":"getEncodedSVG","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"day","type":"uint256"}],"name":"getHexColor","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256[]","name":"ids","type":"uint256[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeBatchTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uin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Contract Creation Code
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