Contract Name:
GiveawayToken
Contract Source Code:
// 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;
}
}
// SPDX-License-Identifier: MIT
// Creator: Chillieman (iHateScammers.eth)
// Twitter: @Chillieman1 && @_GiveawayToken_
pragma solidity ^0.8.9;
import "./IERC20.sol";
import "./IERC20Metadata.sol";
import "./Context.sol";
import "./IUniswapV2Router02.sol";
import "./IUniswapV2Factory.sol";
contract GiveawayToken is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
// 1% of Transfers will goto Giveaways and AirDrops.
// 1% of Transfers will be held for Team Expenses
uint8 constant private _feeForEachBucket = 1;
uint8 constant private _totalFees = 2;
// My Giveaway Wallet - iHateScammers.eth
address constant private _chillieman = 0xE1b49c45F5079a02E603aFFF00C035c242aEeE16;
//We have to allow Exchange Wallets (UniSwap Router / Pair) to hold more than 1% of the supply
mapping (address => bool) private _isExcludedFromTokenLimit;
bool private _isWalletLimitEnforced; // Do we limit the Max Value of wallets?
bool private _isUniswapFunded;
// Running Amount of how much Fees have been collected.
uint256 private _teamStash;
uint256 private _giveawayStash;
// Airdrops Start at 4 and decrement everytime an Initial Airdrop is sent. Initial Airdrops only work if this is non-zero.
uint8 private _airdropsLeft;
string private constant _name = "GiveawayToken";
string private constant _symbol = "GIVEAWAY";
uint8 private constant _decimals = 18;
uint256 private constant _totalSupply = 42_000_000_000_000 ether; // 42 Trillion Tokens
uint256 private constant _uniSwapSupply = 33_600_000_000_000 ether; // 80%
uint256 private constant _airdropSupply = 2_100_000_000_000 ether; // 5% for Each AirDrop
uint256 private constant _maxWalletAmount = 420_000_000_000 ether; // Wallets cant hold more than 1%
IUniswapV2Router02 private _uniswapV2Router;
address private _uniswapV2Pair;
// Emitted when an exchange is added or removed to the _isExcludedFromTokenLimit list.
event ExchangeAdded(address exchangeAddress);
event ExchangeRemoved(address exchangeAddress);
modifier onlyChillie {
require(_chillieman == _msgSender(), "Denied: caller is not Chillieman");
_;
}
constructor() payable {
_uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
address pairAddress = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
// Approve the UniSwap Router so Initial LP can be created
_approve(address(this), address(_uniswapV2Router), type(uint256).max);
// Add the UniSwap Pair / Router to MaxAmount List - This will allow this exchange to hold more than 1%
_isExcludedFromTokenLimit[0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D] = true;
_isExcludedFromTokenLimit[pairAddress] = true;
// THIS contract is allowed to hold more than 1%
_isExcludedFromTokenLimit[address(this)] = true;
// Set Starting Variables
_teamStash = 0;
_giveawayStash = 0;
_airdropsLeft = 4; // 4 separate Airdrops.
_isUniswapFunded = false;
// At First, We limit Coins to 1% of the Total Supply
// - If this ever needs to allow Wallets to go wild, Switch this to False
_isWalletLimitEnforced = true;
// Give all the Tokens to THIS contract, not Chillieman.
_balances[address(this)] = _totalSupply;
emit Transfer(address(0), _chillieman, _totalSupply);
}
// Return Chilliemans GiveAway Wallet
function chillieman() public pure returns (address) {
return _chillieman;
}
// Return Uniswap Router Address
function uniswapV2Router() public view returns (IUniswapV2Router02) {
return _uniswapV2Router;
}
// Return Name of Token
function name() public pure virtual override returns (string memory) {
return _name;
}
// Return Symbol of Token
function symbol() public pure virtual override returns (string memory) {
return _symbol;
}
function decimals() public pure virtual override returns (uint8) {
return _decimals;
}
// Return Total Supply
function totalSupply() public pure virtual override returns (uint256) {
return _totalSupply;
}
// Return Balance of specific wallet
function balanceOf(address wallet) public view virtual override returns (uint256) {
return _balances[wallet];
}
// Return the amount currently held for Team Expense
function teamStash() public view returns (uint256) {
return _teamStash;
}
// Return the amount currently held for Giveaways
function giveawayStash() public view returns (uint256) {
return _giveawayStash;
}
// How many of the initial Airdrops are left (0-4)
function airdropsRemaining() public view returns (uint) {
return _airdropsLeft;
}
// Check a wallet to see if it can own more than 1% of supply (Reserved for Exchanges)
function isExcludedFromWalletLimit(address wallet) public view returns(bool) {
return _isExcludedFromTokenLimit[wallet];
}
// Returns True if Wallets currently are limited to 1% of supply
function isWalletEnforcementEnabled() public view returns (bool) {
return _isWalletLimitEnforced;
}
// Public Interface to perform a tranfer from your wallet
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
// Check Allowances - Does a Spender have the ability to Transfer Tokens in your name?
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
// Allow someone else (Such as UniSwap) to transfer tokens in your name
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
// Called from UniSwap to swap your tokens for ETH
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;
}
// Increase the amount that a Spender can send in your name
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
// Decrease the amount that a Spender can send in your name
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;
}
//to recieve ETH from uniswapV2Router when swaping
receive() external payable {}
// Calculate 1% of a transaction (How much will be withheld for Giveaways & Team Expenses?
function calculateBaseFee(uint256 amount) private pure returns (uint256) {
return amount / 100;
}
// Set the amount that an extrenal wallet can transfer in your name.
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);
}
// Internal Method to descrease the ammount of Allowance
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);
}
}
}
// Internal Transfer Function - Takes Fees from any transfer that is not directly to or from this Contract
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");
require(_balances[from] >= amount, "ERC20: transfer amount exceeds balance");
uint256 tokensToTransfer;
// Transfer coming from this Contract dont pay fee
// - Dont Take Fees On Giveaways / Airdrops / UniSwap Funding.
if (to == address(this) || from == address(this)) {
tokensToTransfer = amount;
} else {
tokensToTransfer = takeFeesAndEnforceWalletLimit(to, from, amount);
}
unchecked {
_balances[from] -= tokensToTransfer;
_balances[to] += tokensToTransfer;
}
emit Transfer(from, to, tokensToTransfer);
}
// Withhold 2% of every Transfer to be used for Giveaways and Team Expenses
function takeFeesAndEnforceWalletLimit(address to, address from, uint256 amount) private returns (uint256) {
uint256 baseFee = calculateBaseFee(amount);
uint256 totalFees = baseFee * _totalFees; // 2% is withheld for Token Growth / Giveaways
uint256 amountAfterFees = amount - totalFees;
// If we are Enforming Wallet Limit, make sure the Receiving Wallet doesnt receive more than 1%!
if(_isWalletLimitEnforced && !isExcludedFromWalletLimit(to)) {
// Make sure that After fees, Wallets do NOT have more than 1% of supply
require(_balances[to] + amountAfterFees <= _maxWalletAmount, "Wallet Cannot Receive this much! Over Limit.");
}
// Add Fees for Giveaways and Team.
unchecked {
_teamStash += baseFee;
_giveawayStash += baseFee;
_balances[address(this)] += totalFees;
_balances[from] -= totalFees;
}
emit Transfer(from, address(this), totalFees);
//After fees have been taken, return the amount of tokens left for the recipient
return amountAfterFees;
}
// Function to Fund Uniswap
function fundUniSwap() public onlyChillie {
require(!_isUniswapFunded, "You already Supplied Funds to to UniSwap");
// Enter Initial Supply to UniSwap.
_uniswapV2Router.addLiquidityETH{value: address(this).balance}(
address(this),
_uniSwapSupply,
0, // slippage is unavoidable
0, // slippage is unavoidable
address(this), // Lock Liquidity Tokens HERE! This can never be retreived
block.timestamp
);
_isUniswapFunded = true;
}
// -- Chillieman Functions --
// Turn off the MAX TOKEN Limit. If the 1% MAX WALLET severly Hinders token growth, consider disabling it.
function disableWalletLimit() public onlyChillie {
_isWalletLimitEnforced = false;
}
// Turn back on the MAX TOKEN Limit.
function reenableWalletLimit() public onlyChillie {
_isWalletLimitEnforced = true;
}
// Add an Exchange so it can hold more than 1% of the Supply.
function chillieAddExchange(address wallet) public onlyChillie {
require(!_isExcludedFromTokenLimit[wallet], "Exchange is already Added");
_isExcludedFromTokenLimit[wallet] = true;
emit ExchangeAdded(wallet);
}
// Remove an Exchange so it can no longer hold more than 1% of the Supply.
function chillieRemoveExchange(address wallet) external onlyChillie {
require(_isExcludedFromTokenLimit[wallet], "This is not an Exchange");
// Make sure the core accounts cannot be removed from this list!
require(wallet != address(this), "Cant Remove This Contract!");
require(wallet != address(_uniswapV2Router), "Cant Remove the Initial Router!");
require(wallet != address(_uniswapV2Pair), "Cant Remove the Liquidity Pair!");
_isExcludedFromTokenLimit[wallet] = false;
emit ExchangeRemoved(wallet);
}
// Function to Distribute starting AirDrops
function initialAirdrops(address[] calldata winners) public onlyChillie {
require(_airdropsLeft > 0, "Initial Airdrops are gone, did you mean to use giveawayAirdrops?");
uint256 leftOverTokens = performAirdrop(address(this), winners, _airdropSupply);
_airdropsLeft -= 1;
// ADD LeftOverTokens to the Giveaway Stash
_giveawayStash += leftOverTokens;
}
// Distribute Generational Wealth
function giveawayGenerationalWealth(address winner) public onlyChillie {
require(_giveawayStash > 0, "No Giveaway Fees to give");
_balances[address(this)] -= _giveawayStash;
_balances[winner] += _giveawayStash;
emit Transfer(address(this), winner, _giveawayStash);
_giveawayStash = 0;
}
// Function to Distribute Giveaway AirDrops
function giveawayAirdrops(address[] calldata winners) public onlyChillie {
require(_giveawayStash > 0, "Nothing to Giveaway!");
uint256 leftOverTokens = performAirdrop(address(this), winners, _giveawayStash);
// Put Any LeftOverTokens in the Giveaway Stash
_giveawayStash = leftOverTokens;
}
// Function to perform an AirDrop
function performAirdrop(address thisContract, address[] calldata winners, uint256 amount) private returns(uint256) {
uint256 amountBefore = _balances[thisContract];
uint256 amountToGive = amount / winners.length;
unchecked {
for (uint16 i = 0; i < winners.length; i++) {
address winner = winners[i];
_balances[winner] += amountToGive;
_balances[thisContract] -= amountToGive;
emit Transfer(thisContract, winner, amountToGive);
}
}
uint256 amountGiven = amountBefore - _balances[thisContract];
// Return the remainder tokens after providing airdrop.
return amount - amountGiven;
}
// Claim Fees withheld for Team Expenses.
function chillieClaimTeamStash() public onlyChillie {
require(_teamStash > 0, "No Team Fees to claim");
_transfer(address(this), _chillieman, _teamStash);
_teamStash = 0;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @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);
/**
* @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 `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, 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 `from` to `to` 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 from, address to, uint256 amount) external returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "./IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
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);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
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;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
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;
}