// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.9;
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
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 Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
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);
}
}
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
contract Puchao is ERC20, Ownable {
// store addresses that are automatic market maker pairs.
// transfer *to* these addresses could be subject to a maximum transfer amount
mapping (address => bool) public automatedMarketMakerPairs;
mapping (address => bool) public blacklist;
IUniswapV2Router02 public immutable uniswapV2Router;
address public uniswapV2Pair;
address public marketingWallet;
address public charityWallet;
address public devWallet;
uint256 public maxTransactionAmount;
uint256 public swapTokensAtAmount;
uint256 public maxWallet;
bool public swapEnabled;
bool public limitsEnabled;
bool public txDelayEnabled;
bool public tradingEnabled;
uint256 public buyTotalFees = 8;
uint256 public buyDivisorFees = 4;
uint256 public sellWindow1 = 3 minutes;
uint256 public sellWindow2 = 6 minutes;
uint256 public sellWindow3 = 9 minutes;
uint256 public sellWindow4 = 12 minutes;
uint256 public sellLiquidityFeeWindow1 = 6;
uint256 public sellLiquidityFeeWindow2 = 5;
uint256 public sellLiquidityFeeWindow3 = 3;
uint256 public sellLiquidityFeeWindow4 = 2;
uint256 public sellMarketingFeeWindow1 = 4;
uint256 public sellMarketingFeeWindow2 = 3;
uint256 public sellMarketingFeeWindow3 = 1;
uint256 public sellMarketingFeeWindow4 = 1;
uint256 public sellCharityFee = 1;
uint256 public sellDevFee = 1;
uint256 public tokensForLiquidity;
uint256 public tokensForMarketing;
uint256 public tokensForCharity;
uint256 public tokensForDev;
bool private swapping;
/******************/
// exclude from fees and max transaction amount, track latest buy and transfer...
mapping(address => bool) private _isExcludedFromFees;
mapping(address => bool) private _isExcludedMaxTransactionAmount;
mapping(address => uint256) private _latestSwapIn;
mapping(address => uint256) private _latestTransfer;
event UpdateUniswapV2Router(address indexed newAddr, address indexed oldAddr);
event ExcludeFromFees(address indexed newAddr, bool isExcluded);
event Blacklisted(address newAddr, bool isBlacklisted);
event SetAutomatedMarketMakerPair(address indexed newAddr, bool indexed isPair);
event MarketingWalletUpdated(address indexed newAddr, address indexed oldAddr);
event CharityWalletUpdated(address indexed newAddr, address indexed oldAddr);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiquidity
);
constructor() ERC20("Puchao", "PUCHAO") {
IUniswapV2Router02 _uniswapV2Router =
IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
excludeFromMaxTransaction(address(_uniswapV2Router), true);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
excludeFromMaxTransaction(address(uniswapV2Pair), true);
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
uint256 totalSupply = 20000000000 ether;
maxTransactionAmount = totalSupply * 5 / 1000; //.5%
maxWallet = totalSupply * 1 / 100; //1%
swapTokensAtAmount = totalSupply * 5 / 100000; //.005%
marketingWallet = address(owner());
charityWallet = address(owner());
devWallet = address(owner());
excludeFromFees(owner(), true);
excludeFromFees(address(this), true);
excludeFromFees(address(0xdead), true);
excludeFromMaxTransaction(owner(), true);
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(0xdead), true);
limitsEnabled = true;
txDelayEnabled = true;
_mint(msg.sender, totalSupply);
}
receive() external payable {}
function enableTradingAndSwapping() external onlyOwner returns (bool) {
require(!tradingEnabled && !swapEnabled,
"trading and swapping must not be enabled already");
tradingEnabled = true;
swapEnabled = true;
return true;
}
function removeLimits() external onlyOwner returns (bool) {
require(!limitsEnabled,
"limits must not be removed already");
limitsEnabled = false;
return true;
}
function disableTransferDelay() external onlyOwner returns (bool) {
require(txDelayEnabled,
"tx delay must not already be enabled");
txDelayEnabled = false;
return true;
}
function updateBlacklist(address addr, bool isBlacklisted) external onlyOwner returns (bool) {
require(addr != address(0),
"must not blacklist the zero address");
blacklist[addr] = isBlacklisted;
emit Blacklisted(addr, isBlacklisted);
return true;
}
function updateSwapTokensAtAmount(uint256 amount) external onlyOwner returns (bool) {
require(amount >= totalSupply() * 1 / 100000,
"swap amount cannot be lower than 0.001% total supply.");
require(amount <= totalSupply() * 5 / 1000,
"swap amount cannot be higher than 0.5% total supply.");
swapTokensAtAmount = amount;
return true;
}
function updateMaxTransactionAmount(uint256 amount) external onlyOwner returns (bool) {
require(amount >= (totalSupply() * 1 / 1000) / 1e18,
"must not be set to lower than 0.1%");
maxTransactionAmount = amount * (10**18);
return true;
}
function updateMaxWalletAmount(uint256 amount) external onlyOwner returns (bool) {
require(amount >= (totalSupply() * 5 / 1000) / 1e18,
"must be set to lower than 0.5%");
maxWallet = amount * (10**18);
return true;
}
function updateMarketingWallet(address addr) external onlyOwner returns (bool) {
emit MarketingWalletUpdated(addr, marketingWallet);
marketingWallet = addr;
return true;
}
function updateCharityWallet(address addr) external onlyOwner returns (bool) {
emit CharityWalletUpdated(addr, charityWallet);
charityWallet = addr;
return true;
}
// only use to disable contract sales if absolutely necessary (emergency use only)
function updateSwapEnabled(bool enabled) external onlyOwner returns (bool) {
swapEnabled = enabled;
return true;
}
function updateBuyTotalFees(uint256 fee) external onlyOwner returns (bool) {
require(fee <= 10,
"must not be higher than 10%");
buyTotalFees = fee;
return true;
}
function updateBuyDivisorFees(uint256 divisor) external onlyOwner returns (bool) {
buyDivisorFees = divisor;
return true;
}
function updateCharitySellFee(uint256 fee) external onlyOwner returns (bool) {
require(fee <= 10,
"must not be higher than 10%");
sellCharityFee = fee;
return true;
}
function updateSellWindows(
uint256 window1,
uint256 window2,
uint256 window3,
uint256 window4)
external
onlyOwner
returns (bool)
{
sellWindow1 = window1;
sellWindow2 = window2;
sellWindow3 = window3;
sellWindow4 = window4;
return true;
}
function updateLiquidityFeeForSellWindows(
uint256 fee1,
uint256 fee2,
uint256 fee3,
uint256 fee4)
external
onlyOwner
returns (bool)
{
require(
fee1 <= 10 &&
fee2 <= 10 &&
fee3 <= 10 &&
fee4 <= 10,
"must not be higher than 10%");
sellLiquidityFeeWindow1 = fee1;
sellLiquidityFeeWindow2 = fee2;
sellLiquidityFeeWindow3 = fee3;
sellLiquidityFeeWindow4 = fee4;
return true;
}
function updateMarketingFeeForSellWindows(
uint256 fee1,
uint256 fee2,
uint256 fee3,
uint256 fee4)
external
onlyOwner
returns (bool)
{
require(
fee1 <= 10 &&
fee2 <= 10 &&
fee3 <= 10 &&
fee4 <= 10,
"must not be higher than 10%");
sellMarketingFeeWindow1 = fee1;
sellMarketingFeeWindow2 = fee2;
sellMarketingFeeWindow3 = fee3;
sellMarketingFeeWindow4 = fee4;
return true;
}
function excludeFromMaxTransaction(address addr, bool isExcluded) public onlyOwner returns (bool) {
_isExcludedMaxTransactionAmount[addr] = isExcluded;
return true;
}
function excludeFromFees(address addr, bool isExcluded) public onlyOwner returns (bool) {
_isExcludedFromFees[addr] = isExcluded;
emit ExcludeFromFees(addr, isExcluded);
return true;
}
function setAutomatedMarketMakerPair(address addr, bool isPair) public onlyOwner returns (bool) {
require(addr != uniswapV2Pair,
"the uniswapV2Pair cannot be removed from automatedMarketMakerPairs");
_setAutomatedMarketMakerPair(addr, isPair);
return true;
}
function isExcludedFromFees(address addr) public view returns(bool) {
return _isExcludedFromFees[addr];
}
function _transfer(
address from,
address to,
uint256 amount)
internal
override
{
require(from != address(0),
"ERC20: transfer from the zero address");
require(to != address(0),
"ERC20: transfer to the zero address");
require(!blacklist[from],
"sender must not be blacklisted");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsEnabled){
if (from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping)
{
if (!tradingEnabled) {
require(_isExcludedFromFees[from] || _isExcludedFromFees[to],
"trading is not active.");
}
if (txDelayEnabled) {
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)) {
require(_latestTransfer[tx.origin] < block.number,
"_transfer: transfer delay enabled. Only one purchase per block allowed.");
_latestTransfer[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount,
"buy transfer amount exceeds the max transaction amount.");
require(amount + balanceOf(to) <= maxWallet,
"max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount,
"sell transfer amount exceeds the max transaction amount.");
}
else if (!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet,
"max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to])
{
swapping = true;
swapBack();
swapping = false;
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
//on sell
if (automatedMarketMakerPairs[to]) {
(
uint256 sellTotalFees,
uint256 currentLiquidityFee,
uint256 currentMarketingFee
)
= getSellFeesAccount(from);
fees = amount * sellTotalFees / 100;
tokensForLiquidity += fees * currentLiquidityFee / sellTotalFees;
tokensForMarketing += fees * currentMarketingFee / sellTotalFees;
tokensForCharity += fees * sellCharityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
}
//on buy
if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount * buyTotalFees / 100;
tokensForLiquidity += fees / buyDivisorFees;
tokensForCharity += fees / buyDivisorFees;
tokensForMarketing += fees / buyDivisorFees;
tokensForDev += fees / buyDivisorFees;
_latestSwapIn[to] = block.timestamp;
}
if (fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _setAutomatedMarketMakerPair(address addr, bool isPair) private {
automatedMarketMakerPairs[addr] = isPair;
emit SetAutomatedMarketMakerPair(addr, isPair);
}
function _swapTokensForETH(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
//make the swap
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function _addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
//add the liquidity
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
address(0xdead),
block.timestamp
);
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 tokensToSwap =
(
tokensForLiquidity +
tokensForMarketing +
tokensForCharity +
tokensForDev
);
bool success;
if (contractBalance == 0 || tokensToSwap == 0) { return; }
if (contractBalance > swapTokensAtAmount * 20){
contractBalance = swapTokensAtAmount * 20;
}
uint256 liquidityTokens = contractBalance * tokensForLiquidity / tokensToSwap / 2;
uint256 amountToSwapForETH = contractBalance - liquidityTokens;
uint256 initialETHBalance = address(this).balance;
_swapTokensForETH(amountToSwapForETH);
uint256 ethBalance = address(this).balance - initialETHBalance;
uint256 ethForMarketing = ethBalance * tokensForMarketing / tokensToSwap;
uint256 ethForCharity = ethBalance * tokensForCharity / tokensToSwap;
uint256 ethForDev = ethBalance * tokensForDev / tokensToSwap;
uint256 ethForLiquidity =
(
ethBalance -
ethForMarketing -
ethForCharity -
ethForDev
);
delete tokensForLiquidity;
delete tokensForMarketing;
delete tokensForCharity;
delete tokensForDev;
(success,) = address(devWallet).call{value: ethForCharity}("");
(success,) = address(devWallet).call{value: ethForDev}("");
if (liquidityTokens > 0 && ethForLiquidity > 0) {
_addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(
amountToSwapForETH,
ethForLiquidity,
tokensForLiquidity
);
}
(success,) = address(marketingWallet).call{value: address(this).balance}("");
}
function getSellFeesAccount(address addr)
public
view
returns (
uint256 SellFeeTotal,
uint256 CurrentLiquidityFee,
uint256 CurrentMarketingFee)
{
uint256 feesWithoutLiquidityAndMarketing = sellCharityFee + sellDevFee;
if (block.timestamp < _latestSwapIn[addr] + sellWindow1) {
return (
(
sellLiquidityFeeWindow1 +
sellMarketingFeeWindow1 +
feesWithoutLiquidityAndMarketing
),
sellLiquidityFeeWindow1,
sellMarketingFeeWindow1
);
}
if (block.timestamp > _latestSwapIn[addr] + sellWindow1
&& block.timestamp < _latestSwapIn[addr] + sellWindow2) {
return (
(
sellLiquidityFeeWindow2 +
sellMarketingFeeWindow2 +
feesWithoutLiquidityAndMarketing),
sellLiquidityFeeWindow2,
sellMarketingFeeWindow2
);
}
if (block.timestamp > _latestSwapIn[addr] + sellWindow2
&& block.timestamp < _latestSwapIn[addr] + sellWindow3) {
return (
(
sellLiquidityFeeWindow3 +
sellMarketingFeeWindow3 +
feesWithoutLiquidityAndMarketing),
sellLiquidityFeeWindow3,
sellMarketingFeeWindow3
);
}
if (block.timestamp > _latestSwapIn[addr] + sellWindow3) {
return (
(
sellLiquidityFeeWindow4 +
sellMarketingFeeWindow4 +
feesWithoutLiquidityAndMarketing),
sellLiquidityFeeWindow4,
sellMarketingFeeWindow4
);
}
}
}
{
"compilationTarget": {
"Puchao.sol": "Puchao"
},
"evmVersion": "london",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 200
},
"remappings": []
}
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":"swapTokensAtAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokensForCharity","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokensForDev","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokensForLiquidity","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokensForMarketing","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tradingEnabled","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"txDelayEnabled","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"uniswapV2Pair","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"uniswapV2Router","outputs":[{"internalType":"contract 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