zellic-audit
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// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023.
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
// ERC721CSBT (ERC721 Claimable Soulbound Token)
// Author: 0xInuarashi of CypherLabz
// https://twitter.com/0xInuarashi || 0xInuarashi#1234 (Discord)
// NOTE: This does NOT comply to IERC721 Standards. It is purely experimental.
// It does NOT work like a normal ERC721, so I did not make it have to comply.
// JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ
// JJJJJJJJJJJJJJJJJJJYYYYYYYYYYYYYYYYYYJJJJJJJJJJJJJJJJJJ
// JJJJJJJJJJJJJJJJJJ?~~~~~~~~~~~~~~~~~~!JJJJJJJJJJJJJJJJJ
// JJJJJJJJJJJJJJJJJY! ................ :JJJJJJJJJJJJJJJJJ
// JJJJJJJJJJJJJJJJJJ7::::::::::::::::::~JJJJJJJJJJJJJJJJJ
// JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ
// JJJJJJJJJJJJJJ?????????JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ
// JJJJJJJJJJJJJ?.........!YJJJJJJJ?^::::::::!JJJJJJJJJJJJ
// JJJJJJJJJJJJJ?.........!YJJJJJJJ?:::::::::!YJJJJJJJJJJJ
// JJJJJJJJJJJJJ?..........:::::::::.....::::!YJJJJJJJJJJJ
// JJJJJJJJJJJJJ?........................::::!YJJJJJJJJJJJ
// JJJJJJJJJJJJJ?~~~~^..................:!!!!?JJJJJJJJJJJJ
// JJJJJJJJJJJJJJYYYY7::::..............:YYYYJJJJJJJJJJJJJ
// JJJJJJJJJJJJJJJJJY!....^~~~~. . .^^^^!JJJJJJJJJJJJJJJJJ
// JJJJJJJJJJJJJJJJJY! ?####. 5PPP5JJJJJJJJJJJJJJJJJ
// JJJJJJJJJJJJJJYYYY! .. 7GGGG. YYYYYYYYYJJJJJJJJJJJJJ
// JJJJJJJJJJJJJYGGGGJ:::::....:::::....~GGGG5JJJJJJJJJJJJ
// JJJJJJJJJJJJJYGGGGJ::::.....:::::....^GGGG5JJJJJJJJJJJJ
// JJJJJJJJJJJJJYGGGGP5555~.............^YYYYYJJJJJJJJJJJJ
// JJJJJJJJJJJJJYGGGGGGGGB!.............:JJJJJJJJJJJJJJJJJ
// JJJJJJJJJ5PPPPGGGG57777^.........????J5555YJJJJJJJJJJJJ
// JJJJJJJJJGBGBGGGGGJ.:::.........:GBBBBGGGG5JJJJJJJJJJJJ
// JJJJJJJJJGGGGGPPPGY!!!!:........:PGGGP5PPPYJJJJJJJJJJJJ
// JJJJJJJJJGGGGG5555PPPPP~........:5P555JJJJJJJJJJJJJJJJJ
// JJJJJJJJJGGGGG55555555P!::::....:5P5P5YYYYJJJJJJJJJJJJJ
// JJJJJJJJJ5P5P5555555555PGGGG^...:5P555555PYJJJJJJJJJJJJ
// JJJJJJJJJ55555555555555GBGGG^...:5PPPP555PYJJJJJJJJJJJJ
// JJJJY555555555555555555GGGGG5YYYYGGGGG555555555YJJJJJJJ
// JJJJ5PPPP55555555555555GGGGGPPPPPGGGGG55555PPPPYJJJJJJJ
///// Import Solidity Modules /////
// Short and Simple Ownable by 0xInuarashi
// Ownable follows EIP-173 compliant standard
abstract contract Ownable {
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
address public owner;
constructor() {
owner = msg.sender;
}
modifier onlyOwner {
require(owner == msg.sender, "onlyOwner not owner!");
_;
}
function transferOwnership(address new_) external onlyOwner {
address _old = owner;
owner = new_;
emit OwnershipTransferred(_old, new_);
}
}
abstract contract ERC721TokenURI {
string public baseTokenURI;
function _setBaseTokenURI(string memory uri_) internal virtual {
baseTokenURI = uri_;
}
function _toString(uint256 value_) internal pure virtual
returns (string memory _str) {
assembly {
let m := add(mload(0x40), 0xa0)
mstore(0x40, m)
_str := sub(m, 0x20)
mstore(_str, 0)
let end := _str
for { let temp := value_ } 1 {} {
_str := sub(_str, 1)
mstore8(_str, add(48, mod(temp, 10)))
temp := div(temp, 10)
if iszero(temp) { break }
}
let length := sub(end, _str)
_str := sub(_str, 0x20)
mstore(_str, length)
}
}
function _getTokenURI(uint256 tokenId_) internal virtual view
returns (string memory) {
return string(abi.encodePacked(baseTokenURI, _toString(tokenId_)));
}
}
abstract contract ERC721TokenReceiver {
function onERC721Received(address, address, uint256, bytes calldata)
external virtual returns (bytes4) {
return ERC721TokenReceiver.onERC721Received.selector;
}
}
interface IERC721 {
function ownerOf(uint256 tokenId_) external view returns (address);
}
contract ERC721CSBT is ERC721TokenURI, Ownable {
///// Events /////
event Transfer(address indexed from_, address indexed to_, uint256 indexed tokenId_);
///// Token Data /////
string public name;
string public symbol;
///// Interface Data /////
IERC721 public immutable ERC721Token;
///// Token Storage /////
/** @dev these structs can be expanded to fill the empty bytes */
struct TokenData {
address owner;
}
//// Token Mappings /////
mapping(uint256 => TokenData) public _tokenData;
function ownerOf(uint256 tokenId_) public virtual view returns (address) {
address _owner = _tokenData[tokenId_].owner;
return _owner;
}
///// Constructor /////
constructor(string memory name_, string memory symbol_, address erc721_) {
name = name_;
symbol = symbol_;
ERC721Token = IERC721(erc721_);
}
///// Ownable Settings /////
function setBaseTokenURI(string calldata uri_) external onlyOwner {
_setBaseTokenURI(uri_);
}
///// ERC721-Like Functions /////
function _transfer(address from_, address to_, uint256 tokenId_) internal
virtual { unchecked {
_tokenData[tokenId_].owner = to_;
emit Transfer(from_, to_, tokenId_);
}}
///// ERC721CSBT Functions /////
function callToken(uint256 tokenId_) external {
address _owner = ownerOf(tokenId_);
address _ERC721Owner = ERC721Token.ownerOf(tokenId_);
require(_ERC721Owner == msg.sender, "You are not the owner!");
_transfer(_owner, _ERC721Owner, tokenId_);
}
function burnToken(uint256 tokenId_) external {
address _owner = ownerOf(tokenId_);
address _ERC721Owner = ERC721Token.ownerOf(tokenId_);
require(_ERC721Owner == msg.sender, "You are not the owner!");
_transfer(_owner, address(0), tokenId_);
}
///// ERC165 Interface /////
function supportsInterface(bytes4 iid_) public virtual view returns (bool) {
return iid_ == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
iid_ == 0x80ac58cd || // ERC165 Interface ID for ERC721
iid_ == 0x5b5e139f; // ERC165 Interface ID for ERC721Metadata
}
///// TokenURI Things /////
function tokenURI(uint256 tokenId_) public virtual view returns (string memory) {
return _getTokenURI(tokenId_);
}
}