Contract Name:
SprotoPepesGEN
Contract Source Code:
pragma solidity ^0.8.17;
import "openzeppelin-contracts/contracts/access/Ownable.sol";
interface ERC721TokenReceiver {
function onERC721Received(
address operator,
address from,
uint tokenId,
bytes calldata data
) external returns (bytes4);
}
contract SprotoPepesGEN is Ownable {
string public symbol;
string public name;
string public CID;
address public SprotonCommand;
uint public totalSupply = 0;
mapping(uint => address) owners;
mapping(address => uint) balances;
uint256[] private _allTokens;
mapping(uint256 => uint256) private _allTokensIndex;
mapping(uint256 => uint256) private _ownedTokensIndex;
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
event Transfer(
address indexed from,
address indexed to,
uint indexed tokenId
);
constructor(string memory _symbol, string memory _name) { symbol=_symbol; name=_name;}
function setCID(string memory _CID) public onlyOwner {
CID = _CID;
}
function setSprotonCommand(address _SprotonCommand) public onlyOwner {
SprotonCommand = _SprotonCommand;
}
function mintGEN(address to, uint tokenId) public {
require(msg.sender == SprotonCommand, "error SprotonCommand");
_mint(to, tokenId);
}
function transferFrom(address from, address to, uint tokenId) public {
require(msg.sender == SprotonCommand, "error SprotonCommand");
_transfer(from, to, tokenId);
}
function exist(uint tokenId) public view returns (bool) {
return owners[tokenId] != address(0);
}
function supportsInterface(bytes4 interfaceId) public pure returns (bool) {
return interfaceId == 0x80ac58cd || interfaceId == 0x5b5e139f;
}
function balanceOf(address owner) public view returns (uint) {
require(address(0) != owner, "error owner");
return balances[owner];
}
function ownerOf(uint id) public view returns (address) {
require(exist(id), "error exist");
return owners[id];
}
function tokenURI(uint id) public view returns (string memory) {
require(exist(id), "error exist");
return string(abi.encodePacked("ipfs://", CID, "/", _toString(id),".json"));
}
function _mint(address to, uint id) private {
address from = address(0);
require(to != address(0), "error to");
require(owners[id] == address(0), "error owner");
if (from == address(0)) {
_addTokenToAllTokensEnumeration(id);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, id);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(id);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, id);
}
balances[to]++;
owners[id] = to;
totalSupply++;
emit Transfer(address(0), to, id);
require(
_checkOnERC721Received(address(0), to, id, ""),
"error ERC721Receiver"
);
}
function _transfer(address from, address to, uint id) private {
require(exist(id), "error exist");
require(to != address(0), "error to");
require(from == ownerOf(id), "error owner");
if (from == address(0)) {
_addTokenToAllTokensEnumeration(id);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, id);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(id);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, id);
}
balances[from]--;
balances[to]++;
owners[id] = to;
emit Transfer(from, to, id);
require(
_checkOnERC721Received(address(0), to, id, ""),
"error ERC721Receiver"
);
}
function tokenOfOwnerByIndex(
address owner,
uint256 index
) public view virtual returns (uint256) {
require(index < balanceOf(owner), "error balanceOf");
return _ownedTokens[owner][index];
}
function tokenByIndex(uint256 index) public view virtual returns (uint256) {
require(index < totalSupply, "error totalSupply");
return _allTokens[index];
}
function _addTokenToOwnerEnumeration(address to, uint256 id) private {
uint256 length = balanceOf(to);
_ownedTokens[to][length] = id;
_ownedTokensIndex[id] = length;
}
function _addTokenToAllTokensEnumeration(uint256 id) private {
_allTokensIndex[id] = _allTokens.length;
_allTokens.push(id);
}
function _removeTokenFromOwnerEnumeration(
address from,
uint256 id
) private {
uint256 lastTokenIndex = balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[id];
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId;
_ownedTokensIndex[lastTokenId] = tokenIndex;
}
delete _ownedTokensIndex[id];
delete _ownedTokens[from][lastTokenIndex];
}
function _removeTokenFromAllTokensEnumeration(uint256 id) private {
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[id];
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId;
_allTokensIndex[lastTokenId] = tokenIndex;
delete _allTokensIndex[id];
_allTokens.pop();
}
function _checkOnERC721Received(
address from,
address to,
uint id,
bytes memory _data
) internal returns (bool) {
uint size;
assembly {
size := extcodesize(to)
}
if (size > 0)
try
ERC721TokenReceiver(to).onERC721Received(
msg.sender,
from,
id,
_data
)
returns (bytes4 retval) {
return
retval == ERC721TokenReceiver(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) revert("error ERC721Receiver");
else
assembly {
revert(add(32, reason), mload(reason))
}
}
else return true;
}
function _toString(uint value) private pure returns (string memory) {
if (value == 0) return "0";
uint digits;
uint tmp = value;
while (tmp != 0) {
digits++;
tmp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint(value % 10)));
value /= 10;
}
return string(buffer);
}
}
// 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 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;
}
}