Description:
Decentralized Finance (DeFi) protocol contract providing Swap, Liquidity, Factory functionality.
Blockchain: Ethereum
Source Code: View Code On The Blockchain
Solidity Source Code:
{{
"language": "Solidity",
"sources": {
"contracts/Kanro.sol": {
"content": "// SPDX-License-Identifier: MIT\r
\r
pragma solidity 0.8.11;\r
\r
abstract contract Context {\r
function _msgSender() internal view virtual returns (address) {\r
return msg.sender;\r
}\r
\r
function _msgData() internal view virtual returns (bytes calldata) {\r
return msg.data;\r
}\r
}\r
\r
interface IUniswapV2Pair {\r
event Approval(address indexed owner, address indexed spender, uint value);\r
event Transfer(address indexed from, address indexed to, uint value);\r
\r
function name() external pure returns (string memory);\r
function symbol() external pure returns (string memory);\r
function decimals() external pure returns (uint8);\r
function totalSupply() external view returns (uint);\r
function balanceOf(address owner) external view returns (uint);\r
function allowance(address owner, address spender) external view returns (uint);\r
\r
function approve(address spender, uint value) external returns (bool);\r
function transfer(address to, uint value) external returns (bool);\r
function transferFrom(address from, address to, uint value) external returns (bool);\r
\r
event Swap(\r
address indexed sender,\r
uint amount0In,\r
uint amount1In,\r
uint amount0Out,\r
uint amount1Out,\r
address indexed to\r
);\r
event Sync(uint112 reserve0, uint112 reserve1);\r
\r
function factory() external view returns (address);\r
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;\r
}\r
\r
interface IUniswapV2Factory {\r
function createPair(address tokenA, address tokenB) external returns (address pair);\r
}\r
\r
interface IERC20 {\r
function totalSupply() external view returns (uint256);\r
function balanceOf(address account) external view returns (uint256);\r
function transfer(address recipient, uint256 amount) external returns (bool);\r
function allowance(address owner, address spender) external view returns (uint256);\r
function approve(address spender, uint256 amount) external returns (bool);\r
function transferFrom(\r
address sender,\r
address recipient,\r
uint256 amount\r
) external returns (bool);\r
\r
event Transfer(address indexed from, address indexed to, uint256 value);\r
event Approval(address indexed owner, address indexed spender, uint256 value);\r
}\r
\r
interface IERC20Metadata is IERC20 {\r
function name() external view returns (string memory);\r
function symbol() external view returns (string memory);\r
function decimals() external view returns (uint8);\r
}\r
\r
\r
contract ERC20 is Context, IERC20, IERC20Metadata {\r
mapping(address => uint256) private _balances;\r
\r
mapping(address => mapping(address => uint256)) private _allowances;\r
\r
uint256 private _totalSupply;\r
\r
string private _name;\r
string private _symbol;\r
\r
constructor(string memory name_, string memory symbol_) {\r
_name = name_;\r
_symbol = symbol_;\r
}\r
\r
function name() public view virtual override returns (string memory) {\r
return _name;\r
}\r
\r
function symbol() public view virtual override returns (string memory) {\r
return _symbol;\r
}\r
\r
function decimals() public view virtual override returns (uint8) {\r
return 18;\r
}\r
\r
function totalSupply() public view virtual override returns (uint256) {\r
return _totalSupply;\r
}\r
\r
function balanceOf(address account) public view virtual override returns (uint256) {\r
return _balances[account];\r
}\r
\r
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {\r
_transfer(_msgSender(), recipient, amount);\r
return true;\r
}\r
\r
function allowance(address owner, address spender) public view virtual override returns (uint256) {\r
return _allowances[owner][spender];\r
}\r
\r
function approve(address spender, uint256 amount) public virtual override returns (bool) {\r
_approve(_msgSender(), spender, amount);\r
return true;\r
}\r
\r
function transferFrom(\r
address sender,\r
address recipient,\r
uint256 amount\r
) public virtual override returns (bool) {\r
uint256 currentAllowance = _allowances[sender][_msgSender()];\r
if (currentAllowance != type(uint256).max) {\r
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");\r
unchecked {\r
_approve(sender, _msgSender(), currentAllowance - amount);\r
}\r
}\r
\r
_transfer(sender, recipient, amount);\r
\r
return true;\r
}\r
\r
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\r
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);\r
return true;\r
}\r
\r
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\r
uint256 currentAllowance = _allowances[_msgSender()][spender];\r
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");\r
unchecked {\r
_approve(_msgSender(), spender, currentAllowance - subtractedValue);\r
}\r
\r
return true;\r
}\r
\r
function _transfer(\r
address sender,\r
address recipient,\r
uint256 amount\r
) internal virtual {\r
require(sender != address(0), "ERC20: transfer from the zero address");\r
require(recipient != address(0), "ERC20: transfer to the zero address");\r
\r
_beforeTokenTransfer(sender, recipient, amount);\r
\r
uint256 senderBalance = _balances[sender];\r
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");\r
unchecked {\r
_balances[sender] = senderBalance - amount;\r
}\r
_balances[recipient] += amount;\r
\r
emit Transfer(sender, recipient, amount);\r
\r
_afterTokenTransfer(sender, recipient, amount);\r
}\r
\r
function _mint(address account, uint256 amount) internal virtual {\r
require(account != address(0), "ERC20: mint to the zero address");\r
\r
_beforeTokenTransfer(address(0), account, amount);\r
\r
_totalSupply += amount;\r
_balances[account] += amount;\r
emit Transfer(address(0), account, amount);\r
\r
_afterTokenTransfer(address(0), account, amount);\r
}\r
\r
function _burn(address account, uint256 amount) internal virtual {\r
require(account != address(0), "ERC20: burn from the zero address");\r
\r
_beforeTokenTransfer(account, address(0), amount);\r
\r
uint256 accountBalance = _balances[account];\r
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");\r
unchecked {\r
_balances[account] = accountBalance - amount;\r
}\r
_totalSupply -= amount;\r
\r
emit Transfer(account, address(0), amount);\r
\r
_afterTokenTransfer(account, address(0), amount);\r
}\r
\r
function _approve(\r
address owner,\r
address spender,\r
uint256 amount\r
) internal virtual {\r
require(owner != address(0), "ERC20: approve from the zero address");\r
require(spender != address(0), "ERC20: approve to the zero address");\r
\r
_allowances[owner][spender] = amount;\r
emit Approval(owner, spender, amount);\r
}\r
\r
function _beforeTokenTransfer(\r
address from,\r
address to,\r
uint256 amount\r
) internal virtual {}\r
\r
function _afterTokenTransfer(\r
address from,\r
address to,\r
uint256 amount\r
) internal virtual {}\r
}\r
library SafeMath {\r
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {\r
unchecked {\r
uint256 c = a + b;\r
if (c < a) return (false, 0);\r
return (true, c);\r
}\r
}\r
\r
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {\r
unchecked {\r
if (b > a) return (false, 0);\r
return (true, a - b);\r
}\r
}\r
\r
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {\r
unchecked {\r
if (a == 0) return (true, 0);\r
uint256 c = a * b;\r
if (c / a != b) return (false, 0);\r
return (true, c);\r
}\r
}\r
\r
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {\r
unchecked {\r
if (b == 0) return (false, 0);\r
return (true, a / b);\r
}\r
}\r
\r
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {\r
unchecked {\r
if (b == 0) return (false, 0);\r
return (true, a % b);\r
}\r
}\r
\r
function add(uint256 a, uint256 b) internal pure returns (uint256) {\r
return a + b;\r
}\r
\r
function sub(uint256 a, uint256 b) internal pure returns (uint256) {\r
return a - b;\r
}\r
\r
function mul(uint256 a, uint256 b) internal pure returns (uint256) {\r
return a * b;\r
}\r
\r
function div(uint256 a, uint256 b) internal pure returns (uint256) {\r
return a / b;\r
}\r
\r
function mod(uint256 a, uint256 b) internal pure returns (uint256) {\r
return a % b;\r
}\r
\r
function sub(uint256 a,uint256 b,string memory errorMessage) internal pure returns (uint256) {\r
unchecked {\r
require(b <= a, errorMessage);\r
return a - b;\r
}\r
}\r
\r
function div(uint256 a,uint256 b,string memory errorMessage) internal pure returns (uint256) {\r
unchecked {\r
require(b > 0, errorMessage);\r
return a / b;\r
}\r
}\r
\r
function mod(uint256 a,uint256 b,string memory errorMessage) internal pure returns (uint256) {\r
unchecked {\r
require(b > 0, errorMessage);\r
return a % b;\r
}\r
}\r
}\r
\r
abstract contract Ownable is Context {\r
address private _owner;\r
\r
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\r
\r
constructor() {\r
_transferOwnership(_msgSender());\r
}\r
\r
function owner() public view virtual returns (address) {\r
return _owner;\r
}\r
\r
modifier onlyOwner() {\r
require(owner() == _msgSender(), "Ownable: caller is not the owner");\r
_;\r
}\r
\r
function renounceOwnership() public virtual onlyOwner {\r
_transferOwnership(address(0));\r
}\r
\r
function transferOwnership(address newOwner) public virtual onlyOwner {\r
require(newOwner != address(0), "Ownable: new owner is the zero address");\r
_transferOwnership(newOwner);\r
}\r
\r
function _transferOwnership(address newOwner) internal virtual {\r
address oldOwner = _owner;\r
_owner = newOwner;\r
emit OwnershipTransferred(oldOwner, newOwner);\r
}\r
}\r
\r
interface IUniswapV2Router01 {\r
function factory() external pure returns (address);\r
function WETH() external pure returns (address);\r
function addLiquidityETH(\r
address token,\r
uint amountTokenDesired,\r
uint amountTokenMin,\r
uint amountETHMin,\r
address to,\r
uint deadline\r
) external payable returns (uint amountToken, uint amountETH, uint liquidity);\r
}\r
\r
interface IUniswapV2Router02 is IUniswapV2Router01 {\r
function swapExactTokensForETHSupportingFeeOnTransferTokens(\r
uint amountIn, \r
uint amountOutMin, \r
address[] calldata path, \r
address to, \r
uint deadline\r
) external;\r
}\r
\r
contract KANRO is ERC20, Ownable {\r
using SafeMath for uint256;\r
\r
IUniswapV2Router02 public immutable uniswapV2Router;\r
address public immutable uniswapV2Pair;\r
\r
mapping (address => bool) public isBot;\r
bool private _swapping;\r
uint256 private _launchTime;\r
\r
address private devWallet;\r
\r
uint256 public maxTransactionAmount;\r
uint256 public swapTokensAtAmount;\r
uint256 public maxWallet;\r
\r
bool public limitsInEffect = true;\r
bool public tradingActive = false;\r
\r
// Anti-bot and anti-whale mappings and variables\r
mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch\r
bool public transferDelayEnabled = true;\r
\r
uint256 public buyTotalFees;\r
uint256 public buyDevFee;\r
\r
uint256 public sellTotalFees;\r
uint256 public sellDevFee;\r
\r
uint256 public tokensForDev;\r
\r
/******************/\r
\r
// exlcude from fees and max transaction amount\r
mapping (address => bool) private _isExcludedFromFees;\r
mapping (address => bool) public _isExcludedMaxTransactionAmount;\r
\r
// store addresses that a automatic market maker pairs. Any transfer *to* these addresses\r
// could be subject to a maximum transfer amount\r
mapping (address => bool) public automatedMarketMakerPairs;\r
\r
event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiquidity);\r
\r
event marketingWalletUpdated(address indexed newWallet, address indexed oldWallet);\r
\r
event devWalletUpdated(address indexed newWallet, address indexed oldWallet);\r
\r
constructor() ERC20("Kanro Fund", "KANRO") {\r
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\r
\r
excludeFromMaxTransaction(address(_uniswapV2Router), true);\r
uniswapV2Router = _uniswapV2Router;\r
\r
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());\r
excludeFromMaxTransaction(address(uniswapV2Pair), true);\r
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);\r
\r
\r
\r
uint256 _buyDevFee = 5;\r
\r
uint256 _sellDevFee = 5;\r
\r
uint256 totalSupply = 1 * 1e6 * 1e18;\r
\r
maxTransactionAmount = totalSupply * 15 / 1000; // 1.5% maxTransactionAmountTxn\r
maxWallet = totalSupply * 15 / 1000; // 1.5% maxWallet\r
swapTokensAtAmount = totalSupply * 5 / 10000; // 0.05% swap wallet\r
\r
// Set Fees\r
buyDevFee = _buyDevFee;\r
buyTotalFees = buyDevFee;\r
\r
sellDevFee = _sellDevFee;\r
sellTotalFees = sellDevFee;\r
\r
// Set Fee Wallet\r
devWallet = address(0xB36082ba6c35490D1E167CC6Dd5ad20884A21Afb); // set as dev wallet\r
\r
\r
// exclude from paying fees or having max transaction amount\r
excludeFromFees(owner(), true);\r
excludeFromFees(address(this), true);\r
excludeFromFees(address(0xdead), true);\r
\r
excludeFromMaxTransaction(owner(), true);\r
excludeFromMaxTransaction(address(this), true);\r
excludeFromMaxTransaction(address(0xdead), true);\r
\r
/*\r
_mint is an internal function in ERC20.sol that is only called here,\r
and CANNOT be called ever again\r
*/\r
_mint(msg.sender, totalSupply);\r
}\r
\r
receive() external payable {\r
\r
}\r
\r
\r
// once enabled, can never be turned off\r
function enableTrading() external onlyOwner {\r
tradingActive = true;\r
_launchTime = block.timestamp;\r
}\r
\r
// remove limits after token is stable\r
function removeLimits() external onlyOwner returns (bool) {\r
limitsInEffect = false;\r
return true;\r
}\r
\r
// disable Transfer delay - cannot be reenabled\r
function disableTransferDelay() external onlyOwner returns (bool) {\r
transferDelayEnabled = false;\r
return true;\r
}\r
\r
// change the minimum amount of tokens to sell from fees\r
function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner returns (bool) {\r
require(newAmount >= totalSupply() * 1 / 100000, "Swap amount cannot be lower than 0.001% total supply.");\r
require(newAmount <= totalSupply() * 5 / 1000, "Swap amount cannot be higher than 0.5% total supply.");\r
swapTokensAtAmount = newAmount;\r
return true;\r
}\r
\r
function updateMaxTxnAmount(uint256 newNum) external onlyOwner {\r
require(newNum >= (totalSupply() * 1 / 1000) / 1e18, "Cannot set maxTransactionAmount lower than 0.1%");\r
maxTransactionAmount = newNum * 1e18;\r
}\r
\r
function updateMaxWalletAmount(uint256 newNum) external onlyOwner {\r
require(newNum >= (totalSupply() * 5 / 1000)/1e18, "Cannot set maxWallet lower than 0.5%");\r
maxWallet = newNum * 1e18;\r
}\r
\r
function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {\r
_isExcludedMaxTransactionAmount[updAds] = isEx;\r
}\r
\r
function updateBuyFees(uint256 _devFee) external onlyOwner {\r
buyDevFee = _devFee;\r
buyTotalFees = buyDevFee;\r
require(buyTotalFees <= 10, "Must keep fees at 10% or less");\r
}\r
\r
function updateSellFees(uint256 _devFee) external onlyOwner {\r
sellDevFee = _devFee;\r
sellTotalFees = sellDevFee;\r
require(sellTotalFees <= 25, "Must keep fees at 15% or less");\r
}\r
\r
function excludeFromFees(address account, bool excluded) public onlyOwner {\r
_isExcludedFromFees[account] = excluded;\r
}\r
\r
function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {\r
require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");\r
\r
_setAutomatedMarketMakerPair(pair, value);\r
}\r
\r
function _setAutomatedMarketMakerPair(address pair, bool value) private {\r
automatedMarketMakerPairs[pair] = value;\r
}\r
\r
\r
function updateDevWallet(address newWallet) external onlyOwner {\r
emit devWalletUpdated(newWallet, devWallet);\r
devWallet = newWallet;\r
}\r
\r
\r
function isExcludedFromFees(address account) public view returns(bool) {\r
return _isExcludedFromFees[account];\r
}\r
\r
function addBots(address[] memory bots) public onlyOwner() {\r
for (uint i = 0; i < bots.length; i++) {\r
if (bots[i] != uniswapV2Pair && bots[i] != address(uniswapV2Router)) {\r
isBot[bots[i]] = true;\r
}\r
}\r
}\r
\r
function removeBots(address[] memory bots) public onlyOwner() {\r
for (uint i = 0; i < bots.length; i++) {\r
isBot[bots[i]] = false;\r
}\r
}\r
\r
function _transfer(\r
address from,\r
address to,\r
uint256 amount\r
) internal override {\r
require(from != address(0), "ERC20: transfer from the zero address");\r
require(to != address(0), "ERC20: transfer to the zero address");\r
require(!isBot[from], "Your address has been marked as a bot/sniper, you are unable to transfer or swap.");\r
\r
if (amount == 0) {\r
super._transfer(from, to, 0);\r
return;\r
}\r
\r
if (limitsInEffect) {\r
if (\r
from != owner() &&\r
to != owner() &&\r
to != address(0) &&\r
to != address(0xdead) &&\r
!_swapping\r
) {\r
if (!tradingActive) {\r
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");\r
}\r
\r
// at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch. \r
if (transferDelayEnabled){\r
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){\r
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");\r
_holderLastTransferTimestamp[tx.origin] = block.number;\r
}\r
}\r
\r
// On buy\r
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {\r
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");\r
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");\r
}\r
\r
// On sell\r
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {\r
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");\r
}\r
else if (!_isExcludedMaxTransactionAmount[to]){\r
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");\r
}\r
}\r
}\r
\r
uint256 contractTokenBalance = balanceOf(address(this));\r
bool canSwap = contractTokenBalance >= swapTokensAtAmount;\r
\r
if (\r
canSwap &&\r
!_swapping &&\r
!automatedMarketMakerPairs[from] &&\r
!_isExcludedFromFees[from] &&\r
!_isExcludedFromFees[to]\r
) {\r
_swapping = true;\r
swapBack();\r
_swapping = false;\r
}\r
\r
bool takeFee = !_swapping;\r
\r
// if any account belongs to _isExcludedFromFee account then remove the fee\r
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) takeFee = false;\r
\r
\r
uint256 fees = 0;\r
// Only take fees on buys/sells, do not take on wallet transfers\r
if (takeFee) {\r
// On sell\r
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){\r
fees = amount.mul(sellTotalFees).div(100);\r
tokensForDev += fees * sellDevFee / sellTotalFees;\r
}\r
// on buy\r
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {\r
fees = amount.mul(buyTotalFees).div(100);\r
tokensForDev += fees * buyDevFee / buyTotalFees;\r
}\r
\r
if (fees > 0) {\r
super._transfer(from, address(this), fees);\r
}\r
\r
amount -= fees;\r
}\r
\r
super._transfer(from, to, amount);\r
}\r
\r
function _swapTokensForEth(uint256 tokenAmount) private {\r
// generate the uniswap pair path of token -> weth\r
address[] memory path = new address[](2);\r
path[0] = address(this);\r
path[1] = uniswapV2Router.WETH();\r
\r
_approve(address(this), address(uniswapV2Router), tokenAmount);\r
\r
// make the swap\r
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\r
tokenAmount,\r
0, // accept any amount of ETH\r
path,\r
address(this),\r
block.timestamp\r
);\r
}\r
\r
function _addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {\r
// approve token transfer to cover all possible scenarios\r
_approve(address(this), address(uniswapV2Router), tokenAmount);\r
\r
// add the liquidity\r
uniswapV2Router.addLiquidityETH{value: ethAmount}(\r
address(this),\r
tokenAmount,\r
0, // slippage is unavoidable\r
0, // slippage is unavoidable\r
owner(),\r
block.timestamp\r
);\r
}\r
\r
function swapBack() private {\r
uint256 contractBalance = balanceOf(address(this));\r
uint256 totalTokensToSwap = tokensForDev;\r
bool success;\r
\r
if(contractBalance == 0 || totalTokensToSwap == 0) {return;}\r
\r
if(contractBalance > swapTokensAtAmount * 20){\r
contractBalance = swapTokensAtAmount * 20;\r
}\r
\r
\r
_swapTokensForEth(totalTokensToSwap); \r
\r
uint256 ethBalance = address(this).balance;\r
\r
\r
tokensForDev = 0;\r
\r
(success,) = address(devWallet).call{value: ethBalance}("");\r
\r
\r
}\r
}"
}
},
"settings": {
"optimizer": {
"enabled": false,
"runs": 200
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"remappings": []
}
}}
Submitted on: 2025-09-24 13:53:28
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