文件 1 的 1:dream.sol
pragma solidity ^0.8.4;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
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() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
contract DREAM is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => bool) private bots;
mapping (address => uint) private cooldown;
uint256 private constant _tTotal = 1e8 * 10**9;
uint256 private _marketingFee = 3;
uint256 private _previousMarketingFee = _marketingFee;
uint256 private _developmentFee = 2;
uint256 private _previousDevelopmentFee = _developmentFee;
uint256 private _liquidityFee = 1;
uint256 private _previousLiquidityFee = _liquidityFee;
uint256 private _foundationFee = 1;
uint256 private _previousFoundationFee = _foundationFee;
uint256 private _rewardFee = 1;
uint256 private _previousRewardFee = _rewardFee;
uint256 private tokensForProject;
uint256 private tokensForDev;
uint256 private tokensForLiquidity;
address payable private _projectWallet;
address payable private _developmentWallet;
address payable private _liquidityWallet;
string private constant _name = "DREAM";
string private constant _symbol = "DREAM";
uint8 private constant _decimals = 9;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private swapping;
bool private inSwap = false;
bool private swapEnabled = false;
bool private cooldownEnabled = false;
bool private marketHoursEnabled = false;
bool private checkHolidays = false;
bool private isSpecialEvent = false;
uint256 private tradingActiveBlock = 0;
uint256 private blocksToBlacklist = 1;
uint256 private _maxBuyAmount = _tTotal;
uint256 private _maxSellAmount = _tTotal;
uint256 private _maxWalletAmount = _tTotal;
uint256 private swapTokensAtAmount = 0;
uint8 private _sunday = 0;
uint8 private _saturday = 6;
uint8 private _openingTimeHr = 14;
uint8 private _closingTimeHr = 20;
uint8 private _openingTimeMin = 30;
struct _DateTime {
uint16 year;
uint8 month;
uint8 day;
uint8 hour;
uint8 minute;
uint8 second;
uint8 weekday;
}
uint constant DAY_IN_SECONDS = 86400;
uint constant YEAR_IN_SECONDS = 31536000;
uint constant LEAP_YEAR_IN_SECONDS = 31622400;
uint constant HOUR_IN_SECONDS = 3600;
uint constant MINUTE_IN_SECONDS = 60;
uint16 constant ORIGIN_YEAR = 1970;
event MaxBuyAmountUpdated(uint _maxBuyAmount);
event MaxSellAmountUpdated(uint _maxSellAmount);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiquidity
);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_projectWallet = payable(0x814f28C01cB2E281A5d9C7bEC1b988406EeED6e8);
_developmentWallet = payable(0xcD11d4f84E6dD5CF256e595557Ebd482399087ec);
_liquidityWallet = payable(address(0xdead));
_rOwned[_msgSender()] = _tTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_projectWallet] = true;
_isExcludedFromFee[_developmentWallet] = true;
_isExcludedFromFee[_liquidityWallet] = true;
emit Transfer(address(0x81252E081f4335e3B766AD5C6C4038076A444994), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return _rOwned[account];
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function setCooldownEnabled(bool onoff) external onlyOwner() {
cooldownEnabled = onoff;
}
function setMarketHoursEnabled(bool onoff) external onlyOwner() {
marketHoursEnabled = onoff;
}
function setCheckHolidaysEnabled(bool onoff) external onlyOwner() {
checkHolidays = onoff;
}
function setSpecialEvent(bool onoff) external onlyOwner() {
isSpecialEvent = onoff;
}
function setSwapEnabled(bool onoff) external onlyOwner(){
swapEnabled = onoff;
}
function _approve(address owner, address spender, uint256 amount) private {
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);
}
function _transfer(address from, address to, uint256 amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
bool takeFee = false;
bool shouldSwap = false;
if (from != owner() && to != owner() && to != address(0) && to != address(0xdead) && !swapping) {
require(!bots[from] && !bots[to]);
if (marketHoursEnabled && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
require(marketOpened(block.timestamp), "Market is closed.");
}
takeFee = true;
if (from == uniswapV2Pair && to != address(uniswapV2Router) && !_isExcludedFromFee[to] && cooldownEnabled) {
require(amount <= _maxBuyAmount, "Transfer amount exceeds the maxBuyAmount.");
require(balanceOf(to) + amount <= _maxWalletAmount, "Exceeds maximum wallet token amount.");
require(cooldown[to] < block.timestamp);
cooldown[to] = block.timestamp + (30 seconds);
}
if (to == uniswapV2Pair && from != address(uniswapV2Router) && !_isExcludedFromFee[from] && cooldownEnabled) {
require(amount <= _maxSellAmount, "Transfer amount exceeds the maxSellAmount.");
shouldSwap = true;
}
}
if(_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
takeFee = false;
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = (contractTokenBalance > swapTokensAtAmount) && shouldSwap;
if (canSwap && swapEnabled && !swapping && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
swapping = true;
swapBack();
swapping = false;
}
_tokenTransfer(from,to,amount,takeFee);
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForProject + tokensForDev;
bool success;
if(contractBalance == 0 || totalTokensToSwap == 0) {return;}
if(contractBalance > swapTokensAtAmount * 10) {
contractBalance = swapTokensAtAmount * 10;
}
uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2;
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForProject).div(totalTokensToSwap);
uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
tokensForLiquidity = 0;
tokensForProject = 0;
tokensForDev = 0;
(success,) = address(_developmentWallet).call{value: ethForDev}("");
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
}
(success,) = address(_projectWallet).call{value: address(this).balance}("");
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0,
0,
_liquidityWallet,
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_projectWallet.transfer(amount.div(2));
_developmentWallet.transfer(amount.div(2));
}
function openTrading() external onlyOwner() {
require(!tradingOpen,"trading is already open");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
swapEnabled = true;
cooldownEnabled = true;
marketHoursEnabled = true;
checkHolidays = true;
_maxBuyAmount = 1e5 * 10**9;
_maxSellAmount = 1e5 * 10**9;
_maxWalletAmount = 3e5 * 10**9;
swapTokensAtAmount = 5e4 * 10**9;
tradingOpen = true;
tradingActiveBlock = block.number;
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
}
function setBots(address[] memory bots_) public onlyOwner {
for (uint i = 0; i < bots_.length; i++) {
bots[bots_[i]] = true;
}
}
function setMaxBuyAmount(uint256 maxBuy) public onlyOwner {
_maxBuyAmount = maxBuy;
}
function setMaxSellAmount(uint256 maxSell) public onlyOwner {
_maxSellAmount = maxSell;
}
function setMaxWalletAmount(uint256 maxToken) public onlyOwner {
_maxWalletAmount = maxToken;
}
function setSwapTokensAtAmount(uint256 newAmount) public onlyOwner {
require(newAmount >= 1e3 * 10**9, "Swap amount cannot be lower than 0.001% total supply.");
require(newAmount <= 5e6 * 10**9, "Swap amount cannot be higher than 0.5% total supply.");
swapTokensAtAmount = newAmount;
}
function setProjectWallet(address projectWallet) public onlyOwner() {
require(projectWallet != address(0), "projectWallet address cannot be 0");
_isExcludedFromFee[_projectWallet] = false;
_projectWallet = payable(projectWallet);
_isExcludedFromFee[_projectWallet] = true;
}
function setDevelopmentWallet(address developmentWallet) public onlyOwner() {
require(developmentWallet != address(0), "developmentWallet address cannot be 0");
_isExcludedFromFee[_developmentWallet] = false;
_developmentWallet = payable(developmentWallet);
_isExcludedFromFee[_developmentWallet] = true;
}
function setLiquidityWallet(address liquidityWallet) public onlyOwner() {
require(liquidityWallet != address(0), "liquidityWallet address cannot be 0");
_isExcludedFromFee[_liquidityWallet] = false;
_liquidityWallet = payable(liquidityWallet);
_isExcludedFromFee[_liquidityWallet] = true;
}
function excludeFromFee(address account) public onlyOwner {
_isExcludedFromFee[account] = true;
}
function includeInFee(address account) public onlyOwner {
_isExcludedFromFee[account] = false;
}
function setMarketingFee(uint256 marketingFee) external onlyOwner() {
require(marketingFee <= 10, "Marketing Fee must be less than 10%");
_marketingFee = marketingFee;
}
function setDevelopmentFee(uint256 developmentFee) external onlyOwner() {
require(developmentFee <= 10, "Development Fee must be less than 10%");
_developmentFee = developmentFee;
}
function setLiquidityFee(uint256 liquidityFee) external onlyOwner() {
require(liquidityFee <= 10, "Liquidity Fee must be less than 10%");
_liquidityFee = liquidityFee;
}
function setFoundationFee(uint256 foundationFee) external onlyOwner() {
require(foundationFee <= 10, "Foundation Fee must be less than 10%");
_foundationFee = foundationFee;
}
function setRewardFee(uint256 rewardFee) external onlyOwner() {
require(rewardFee <= 10, "Reward Fee must be less than 10%");
_rewardFee = rewardFee;
}
function setBlocksToBlacklist(uint256 blocks) public onlyOwner {
blocksToBlacklist = blocks;
}
function removeAllFee() private {
if(_marketingFee == 0 && _developmentFee == 0 && _liquidityFee == 0 && _foundationFee == 0 && _rewardFee == 0) return;
_previousMarketingFee = _marketingFee;
_previousDevelopmentFee = _developmentFee;
_previousLiquidityFee = _liquidityFee;
_previousFoundationFee = _foundationFee;
_previousRewardFee = _rewardFee;
_marketingFee = 0;
_developmentFee = 0;
_liquidityFee = 0;
_foundationFee = 0;
_rewardFee = 0;
}
function restoreAllFee() private {
_marketingFee = _previousMarketingFee;
_developmentFee = _previousDevelopmentFee;
_liquidityFee = _previousLiquidityFee;
_foundationFee = _previousFoundationFee;
_rewardFee = _previousRewardFee;
}
function delBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private {
if(!takeFee) {
removeAllFee();
} else {
amount = _takeFees(sender, amount);
}
_transferStandard(sender, recipient, amount);
if(!takeFee) {
restoreAllFee();
}
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
_rOwned[sender] = _rOwned[sender].sub(tAmount);
_rOwned[recipient] = _rOwned[recipient].add(tAmount);
emit Transfer(sender, recipient, tAmount);
}
function _takeFees(address sender, uint256 amount) private returns (uint256) {
uint256 _totalFees;
uint256 liqFee;
if(tradingActiveBlock + blocksToBlacklist >= block.number){
_totalFees = 99;
liqFee = 92;
} else {
_totalFees = _getTotalFees();
liqFee = _liquidityFee;
}
uint256 fees = amount.mul(_totalFees).div(100);
tokensForProject += fees * (_marketingFee + _rewardFee + _foundationFee) / _totalFees;
tokensForDev += fees * _developmentFee / _totalFees;
tokensForLiquidity += fees * liqFee / _totalFees;
if(fees > 0) {
_transferStandard(sender, address(this), fees);
}
return amount -= fees;
}
receive() external payable {}
function manualswap() external {
require(_msgSender() == _projectWallet);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _projectWallet);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function withdrawStuckETH() external onlyOwner {
require(!tradingOpen, "Can only withdraw if trading hasn't started");
bool success;
(success,) = address(msg.sender).call{value: address(this).balance}("");
}
function _getTotalFees() private view returns(uint256) {
return _marketingFee + _developmentFee + _liquidityFee + _foundationFee + _rewardFee;
}
function marketOpened(uint timestamp) public view returns (bool) {
_DateTime memory dt = parseTimestamp(timestamp);
if (dt.weekday == _sunday || dt.weekday == _saturday) {
return false;
}
if (dt.hour < _openingTimeHr || dt.hour > _closingTimeHr) {
return false;
}
if (dt.hour == _openingTimeHr && dt.minute < _openingTimeMin) {
return false;
}
if (checkHolidays) {
if (dt.month == 1 && (dt.day == 1 || dt.day == 18)) {
return false;
}
if (dt.month == 2 && dt.day == 15) {
return false;
}
if (dt.month == 4 && dt.day == 2) {
return false;
}
if (dt.month == 5 && dt.day == 31) {
return false;
}
if (dt.month == 7 && dt.day == 5) {
return false;
}
if (dt.month == 9 && dt.day == 6) {
return false;
}
if (dt.month == 11 && dt.day == 25) {
return false;
}
if (dt.month == 12 && dt.day == 24) {
return false;
}
}
if (isSpecialEvent) {
return false;
}
return true;
}
function isLeapYear(uint16 year) public pure returns (bool) {
if (year % 4 != 0) {
return false;
}
if (year % 100 != 0) {
return true;
}
if (year % 400 != 0) {
return false;
}
return true;
}
function leapYearsBefore(uint year) public pure returns (uint) {
year -= 1;
return year / 4 - year / 100 + year / 400;
}
function getDaysInMonth(uint8 month, uint16 year) public pure returns (uint8) {
if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {
return 31;
}
else if (month == 4 || month == 6 || month == 9 || month == 11) {
return 30;
}
else if (isLeapYear(year)) {
return 29;
}
else {
return 28;
}
}
function parseTimestamp(uint timestamp) internal pure returns (_DateTime memory dt) {
uint secondsAccountedFor = 0;
uint buf;
uint8 i;
dt.year = getYear(timestamp);
buf = leapYearsBefore(dt.year) - leapYearsBefore(ORIGIN_YEAR);
secondsAccountedFor += LEAP_YEAR_IN_SECONDS * buf;
secondsAccountedFor += YEAR_IN_SECONDS * (dt.year - ORIGIN_YEAR - buf);
uint secondsInMonth;
for (i = 1; i <= 12; i++) {
secondsInMonth = DAY_IN_SECONDS * getDaysInMonth(i, dt.year);
if (secondsInMonth + secondsAccountedFor > timestamp) {
dt.month = i;
break;
}
secondsAccountedFor += secondsInMonth;
}
for (i = 1; i <= getDaysInMonth(dt.month, dt.year); i++) {
if (DAY_IN_SECONDS + secondsAccountedFor > timestamp) {
dt.day = i;
break;
}
secondsAccountedFor += DAY_IN_SECONDS;
}
dt.hour = getHour(timestamp);
dt.minute = getMinute(timestamp);
dt.second = getSecond(timestamp);
dt.weekday = getWeekday(timestamp);
}
function getYear(uint timestamp) public pure returns (uint16) {
uint secondsAccountedFor = 0;
uint16 year;
uint numLeapYears;
year = uint16(ORIGIN_YEAR + timestamp / YEAR_IN_SECONDS);
numLeapYears = leapYearsBefore(year) - leapYearsBefore(ORIGIN_YEAR);
secondsAccountedFor += LEAP_YEAR_IN_SECONDS * numLeapYears;
secondsAccountedFor += YEAR_IN_SECONDS * (year - ORIGIN_YEAR - numLeapYears);
while (secondsAccountedFor > timestamp) {
if (isLeapYear(uint16(year - 1))) {
secondsAccountedFor -= LEAP_YEAR_IN_SECONDS;
}
else {
secondsAccountedFor -= YEAR_IN_SECONDS;
}
year -= 1;
}
return year;
}
function getHour(uint timestamp) public pure returns (uint8) {
return uint8((timestamp / 60 / 60) % 24);
}
function getMinute(uint timestamp) public pure returns (uint8) {
return uint8((timestamp / 60) % 60);
}
function getSecond(uint timestamp) public pure returns (uint8) {
return uint8(timestamp % 60);
}
function getWeekday(uint timestamp) public pure returns (uint8) {
return uint8((timestamp / DAY_IN_SECONDS + 4) % 7);
}
function setSunday(uint8 sunday) external onlyOwner() {
_sunday = sunday;
}
function setSaturday(uint8 saturday) external onlyOwner() {
_saturday = saturday;
}
function setMarketOpeningTimeHr(uint8 openingTimeHr) external onlyOwner() {
_openingTimeHr = openingTimeHr;
}
function setMarketClosingTimeHr(uint8 closingTimeHr) external onlyOwner() {
_closingTimeHr = closingTimeHr;
}
function setMarketOpeningTimeMin(uint8 openingTimeMin) external onlyOwner() {
_openingTimeMin = openingTimeMin;
}
}