// SPDX-License-Identifier: MITpragmasolidity ^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.
*/abstractcontractContext{
function_msgSender() internalviewvirtualreturns (address) {
returnmsg.sender;
}
function_msgData() internalviewvirtualreturns (bytescalldata) {
returnmsg.data;
}
}
Contract Source Code
File 2 of 10: ERC20.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;import"./IERC20.sol";
import"./extensions/IERC20Metadata.sol";
import"../../utils/Context.sol";
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/contractERC20isContext, IERC20, IERC20Metadata{
mapping(address=>uint256) private _balances;
mapping(address=>mapping(address=>uint256)) private _allowances;
uint256private _totalSupply;
stringprivate _name;
stringprivate _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(stringmemory name_, stringmemory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/functionname() publicviewvirtualoverridereturns (stringmemory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/functionsymbol() publicviewvirtualoverridereturns (stringmemory) {
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}.
*/functiondecimals() publicviewvirtualoverridereturns (uint8) {
return18;
}
/**
* @dev See {IERC20-totalSupply}.
*/functiontotalSupply() publicviewvirtualoverridereturns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/functionbalanceOf(address account) publicviewvirtualoverridereturns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/functiontransfer(address recipient, uint256 amount) publicvirtualoverridereturns (bool) {
_transfer(_msgSender(), recipient, amount);
returntrue;
}
/**
* @dev See {IERC20-allowance}.
*/functionallowance(address owner, address spender) publicviewvirtualoverridereturns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/functionapprove(address spender, uint256 amount) publicvirtualoverridereturns (bool) {
_approve(_msgSender(), spender, amount);
returntrue;
}
/**
* @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}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/functiontransferFrom(address sender,
address recipient,
uint256 amount
) publicvirtualoverridereturns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
returntrue;
}
/**
* @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.
*/functionincreaseAllowance(address spender, uint256 addedValue) publicvirtualreturns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
returntrue;
}
/**
* @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`.
*/functiondecreaseAllowance(address spender, uint256 subtractedValue) publicvirtualreturns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
returntrue;
}
/**
* @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:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/function_transfer(address sender,
address recipient,
uint256 amount
) internalvirtual{
require(sender !=address(0), "ERC20: transfer from the zero address");
require(recipient !=address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
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);
_afterTokenTransfer(sender, recipient, 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) internalvirtual{
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) internalvirtual{
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
) internalvirtual{
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 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(addressfrom,
address to,
uint256 amount
) internalvirtual{}
/**
* @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(addressfrom,
address to,
uint256 amount
) internalvirtual{}
}
Contract Source Code
File 3 of 10: IERC20.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/interfaceIERC20{
/**
* @dev Returns the amount of tokens in existence.
*/functiontotalSupply() externalviewreturns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/functionbalanceOf(address account) externalviewreturns (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.
*/functiontransfer(address recipient, uint256 amount) externalreturns (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.
*/functionallowance(address owner, address spender) externalviewreturns (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.
*/functionapprove(address spender, uint256 amount) externalreturns (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.
*/functiontransferFrom(address sender,
address recipient,
uint256 amount
) externalreturns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/eventTransfer(addressindexedfrom, addressindexed 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.
*/eventApproval(addressindexed owner, addressindexed spender, uint256 value);
}
Contract Source Code
File 4 of 10: IERC20Metadata.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;import"../IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/interfaceIERC20MetadataisIERC20{
/**
* @dev Returns the name of the token.
*/functionname() externalviewreturns (stringmemory);
/**
* @dev Returns the symbol of the token.
*/functionsymbol() externalviewreturns (stringmemory);
/**
* @dev Returns the decimals places of the token.
*/functiondecimals() externalviewreturns (uint8);
}
/**
IMPORTANT NOTICE:
This smart contract was written and deployed by the software engineers at
https://highstack.co in a contractor capacity.
At the time of deployment, Highstack was not involved with this project in any
capacity beyond writing the code and deploying this contract. All marketing,
community outreach, distribution, tokenomics and project/token management/planning
is handled by other parties.
Highstack is not responsible for any malicious use or losses arising from using
or interacting with this smart contract.
THIS CONTRACT IS PROVIDED ON AN “AS IS” BASIS. USE THIS SOFTWARE AT YOUR OWN RISK.
THERE IS NO WARRANTY, EXPRESSED OR IMPLIED, THAT DESCRIBED FUNCTIONALITY WILL
FUNCTION AS EXPECTED OR INTENDED. PRODUCT MAY CEASE TO EXIST. NOT AN INVESTMENT,
SECURITY OR A SWAP. TOKENS HAVE NO RIGHTS, USES, PURPOSE, ATTRIBUTES,
FUNCTIONALITIES OR FEATURES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY
USES, PURPOSE OR ATTRIBUTES. TOKENS MAY HAVE NO VALUE. PRODUCT MAY CONTAIN BUGS AND
SERIOUS BREACHES IN THE SECURITY THAT MAY RESULT IN LOSS OF YOUR ASSETS OR THEIR
IMPLIED VALUE. ALL THE CRYPTOCURRENCY TRANSFERRED TO THIS SMART CONTRACT MAY BE LOST.
THE CONTRACT DEVLOPERS ARE NOT RESPONSIBLE FOR ANY MONETARY LOSS, PROFIT LOSS OR ANY
OTHER LOSSES DUE TO USE OF DESCRIBED PRODUCT. CHANGES COULD BE MADE BEFORE AND AFTER
THE RELEASE OF THE PRODUCT. NO PRIOR NOTICE MAY BE GIVEN. ALL TRANSACTION ON THE
BLOCKCHAIN ARE FINAL, NO REFUND, COMPENSATION OR REIMBURSEMENT POSSIBLE. YOU MAY
LOOSE ALL THE CRYPTOCURRENCY USED TO INTERACT WITH THIS CONTRACT. IT IS YOUR
RESPONSIBILITY TO REVIEW THE PROJECT, TEAM, TERMS & CONDITIONS BEFORE USING THE
PRODUCT.
**/// SPDX-License-Identifier: UNLICENSEDpragmasolidity ^0.8.4;import"@openzeppelin/contracts/token/ERC20/ERC20.sol";
import"@openzeppelin/contracts/access/Ownable.sol";
import"@openzeppelin/contracts/utils/math/SafeMath.sol";
import"../lib/IUniswapV2Pair.sol";
import"../lib/IUniswapV2Factory.sol";
import"../lib/IUniswapV2Router.sol";
contractKENJAisERC20, Ownable{
usingSafeMathforuint256;
IUniswapV2Router02 public uniswapV2Router;
addresspublic uniswapV2Pair;
uint256public _totalSupply =1e12*1e18; // 1T tokensuint256public swapTokensAtAmount =1e9*1e18; // 1b = Threshold for swap (0.1%)uint256public maxWalletHoldings =3e9*1e18; // 0.3% max wallet holdings (mutable)addresspublic marketingAddress;
uint256public marketingFee =10;
uint256public liquidityBuyFee =5;
uint256public liquiditySellFee =10;
addressprivate devAddress;
addressprivate lpAddress;
boolpublic _hasLiqBeenAdded =false;
uint256public launchedAt =0;
uint256public swapAndLiquifycount =0;
uint256public snipersCaught =0;
mapping(address=>bool) private whitelisted;
mapping(address=>bool) public blacklisted;
boolprivate swapping;
mapping(address=>bool) public automatedMarketMakerPairs;
eventUpdateUniswapV2Router(addressindexed newAddress,
addressindexed oldAddress
);
eventSendDividends(uint256 tokensSwapped, uint256 amount);
eventAddToWhitelist(addressindexed account, bool isWhitelisted);
eventAddToBlacklist(addressindexed account, bool isBlacklisted);
eventMarketingAddressUpdated(addressindexed newMarketingWallet,
addressindexed oldMarketingWallet
);
eventSetAutomatedMarketMakerPair(addressindexed pair, boolindexed value);
eventSwapAndLiquify(uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
receive() externalpayable{}
constructor(address _marketingAddress,
address _devAddress,
address _lpAddress,
address _uniswapAddress
) ERC20("KENJA", "KENJA") {
marketingAddress = _marketingAddress;
devAddress = _devAddress;
lpAddress = _lpAddress;
// Set Uniswap Address
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
address(_uniswapAddress)
);
address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = _uniswapV2Pair;
_setAutomatedMarketMakerPair(_uniswapV2Pair, true);
whitelist(address(this), true);
whitelist(owner(), true);
whitelist(marketingAddress, true);
whitelist(devAddress, true);
super._mint(owner(), _totalSupply);
}
/**
* ADMIN SETTINGS
*/functionupdateAddresses(address newmarketingAddress, address newLpAddress)
publiconlyOwner{
whitelist(newmarketingAddress, true);
whitelist(newLpAddress, true);
emit MarketingAddressUpdated(newmarketingAddress, marketingAddress);
marketingAddress = newmarketingAddress;
lpAddress = newLpAddress;
}
functionupdateMarketingVariables(uint256 _marketingFee,
uint256 _swapTokensAtAmount,
uint256 _liquidityBuyFee,
uint256 _liquiditySellFee,
uint256 _maxWalletHoldings
) publiconlyOwner{
marketingFee = _marketingFee;
swapTokensAtAmount = _swapTokensAtAmount;
liquidityBuyFee = _liquidityBuyFee;
liquiditySellFee = _liquiditySellFee;
maxWalletHoldings = _maxWalletHoldings;
}
functionupdateUniswapV2Router(address newAddress) publiconlyOwner{
require(
newAddress !=address(uniswapV2Router),
"KENJA: The router already has that address"
);
emit UpdateUniswapV2Router(newAddress, address(uniswapV2Router));
uniswapV2Router = IUniswapV2Router02(newAddress);
}
functionswapAndSendDividendsAndLiquidity(uint256 tokens) private{
// Tokens to send to liquidity =uint256 totalFeeBps = (liquiditySellFee.add(liquidityBuyFee))
.mul(100)
.div(2)
.add(marketingFee.mul(100));
// Handle Marketing Feeuint256 marketingBps = marketingFee.mul(10000).div(totalFeeBps);
uint256 tokensForMarketing = tokens.mul(marketingBps).div(100);
uint256 tokensForLiquify = tokens.sub(tokensForMarketing);
swapTokensForEth(tokensForMarketing);
uint256 dividends =address(this).balance;
// 10% fee taken for marketing. 1% to dev. (10% total fee goes to dev)
(bool successDev, ) =address(devAddress).call{
value: dividends.mul(100).div(1000)
}("");
(bool successMarketing, ) =address(marketingAddress).call{
value: address(this).balance
}("");
if (successDev && successMarketing) {
emit SendDividends(tokens, dividends);
}
swapAndLiquify(tokensForLiquify);
swapAndLiquifycount = swapAndLiquifycount.add(1);
}
functionswapAndLiquify(uint256 contractTokenBalance) internal{
// split the contract balance into halvesuint256 half = contractTokenBalance.div(2);
uint256 otherHalf = contractTokenBalance.sub(half);
uint256 initialBalance =address(this).balance;
// swap tokens for ETH
swapTokensForEth(half);
// how much BNB did we just swap into?uint256 newBalance =address(this).balance.sub(initialBalance);
// add liquidity
addLiquidity(otherHalf, newBalance);
initialBalance =address(this).balance;
emit SwapAndLiquify(half, newBalance, otherHalf);
}
function_transfer(addressfrom,
address to,
uint256 amount
) internaloverride{
require(from!=address(0), "ERC20: transfer from the zero address");
require(to !=address(0), "ERC20: transfer to the zero address");
require(!blacklisted[from], "KENJA: Blocked Transfer");
// Sniper Protectionif (!_hasLiqBeenAdded) {
// If no liquidity yet, allow owner to add liquidity
_checkLiquidityAdd(from, to);
} else {
// if liquidity has already been added.if (
launchedAt >0&&from== uniswapV2Pair &&
devAddress !=from&&
devAddress != to
) {
if (block.number- launchedAt <10) {
_blacklist(to, true);
snipersCaught++;
}
}
}
if (amount ==0) {
super._transfer(from, to, 0);
return;
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&!swapping &&!automatedMarketMakerPairs[from] &&from!= marketingAddress &&
to != marketingAddress
) {
swapping =true;
uint256 sellTokens = balanceOf(address(this));
swapAndSendDividendsAndLiquidity(sellTokens);
swapping =false;
}
bool takeFee =!swapping;
// if any account is whitelisted account then remove the feeif (whitelisted[from] || whitelisted[to]) {
takeFee =false;
}
if (takeFee) {
if (!automatedMarketMakerPairs[to]) {
require(
balanceOf(address(to)).add(amount) < maxWalletHoldings,
"Max Wallet Limit"
);
}
uint256 fees = amount.mul(marketingFee).div(100);
if (automatedMarketMakerPairs[from]) {
fees = fees.add(amount.mul(liquidityBuyFee).div(100));
} else {
fees = fees.add(amount.mul(liquiditySellFee).div(100));
}
amount = amount.sub(fees);
super._transfer(from, address(this), fees);
}
super._transfer(from, to, amount);
}
function_checkLiquidityAdd(addressfrom, address to) private{
// if liquidity is added by the _liquidityholders set// trading enables to true and start the anti sniper timerrequire(!_hasLiqBeenAdded, "Liquidity already added and marked.");
// require liquidity has been added == false (not added).// This is basically only called when owner is adding liquidity.if (from== devAddress && to == uniswapV2Pair) {
_hasLiqBeenAdded =true;
launchedAt =block.number;
}
}
functionaddLiquidity(uint256 tokenAmount, uint256 ethAmount) private{
// Approve token transfer to cover all possible scenarios
_approve(address(this), address(uniswapV2Router), tokenAmount);
// Add the liquidity
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // Slippage is unavoidable0, // Slippage is unavoidable
lpAddress,
block.timestamp
);
}
functionwhitelist(address account, bool isWhitelisted) publiconlyOwner{
whitelisted[account] = isWhitelisted;
emit AddToWhitelist(account, isWhitelisted);
(account, isWhitelisted);
}
functionblacklist(address account, bool isBlacklisted) publiconlyOwner{
_blacklist(account, isBlacklisted);
}
functionlaunched() internalviewreturns (bool) {
return launchedAt !=0;
}
functionlaunch() publiconlyOwner{
launchedAt =block.number;
_hasLiqBeenAdded =true;
}
/**********//* PRIVATE FUNCTIONS *//**********/function_blacklist(address account, bool isBlacklisted) private{
blacklisted[account] = isBlacklisted;
emit AddToBlacklist(account, isBlacklisted);
(account, isBlacklisted);
}
functionswapTokensForEth(uint256 tokenAmount) private{
// generate the uniswap pair path of token -> wethaddress[] memory path =newaddress[](2);
path[0] =address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
// make the swap
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(this),
block.timestamp
);
}
functionsetAutomatedMarketMakerPair(address pair, bool value)
publiconlyOwner{
require(
pair != uniswapV2Pair,
"KENJA: The Uniswap pair cannot be removed from automatedMarketMakerPairs"
);
_setAutomatedMarketMakerPair(pair, value);
}
function_setAutomatedMarketMakerPair(address pair, bool value) private{
require(
automatedMarketMakerPairs[pair] != value,
"KENJA: Automated market maker pair is already set to that value"
);
automatedMarketMakerPairs[pair] = value;
emit SetAutomatedMarketMakerPair(pair, value);
}
}
Contract Source Code
File 9 of 10: Ownable.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;import"../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/abstractcontractOwnableisContext{
addressprivate _owner;
eventOwnershipTransferred(addressindexed previousOwner, addressindexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/functionowner() publicviewvirtualreturns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/modifieronlyOwner() {
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.
*/functionrenounceOwnership() publicvirtualonlyOwner{
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/functiontransferOwnership(address newOwner) publicvirtualonlyOwner{
require(newOwner !=address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function_setOwner(address newOwner) private{
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
Contract Source Code
File 10 of 10: SafeMath.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;// CAUTION// This version of SafeMath should only be used with Solidity 0.8 or later,// because it relies on the compiler's built in overflow checks./**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
* now has built in overflow checking.
*/librarySafeMath{
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/functiontryAdd(uint256 a, uint256 b) internalpurereturns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/functiontrySub(uint256 a, uint256 b) internalpurereturns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/functiontryMul(uint256 a, uint256 b) internalpurereturns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the// benefit is lost if 'b' is also tested.// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522if (a ==0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/functiontryDiv(uint256 a, uint256 b) internalpurereturns (bool, uint256) {
unchecked {
if (b ==0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/functiontryMod(uint256 a, uint256 b) internalpurereturns (bool, uint256) {
unchecked {
if (b ==0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/functionadd(uint256 a, uint256 b) internalpurereturns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/functionsub(uint256 a, uint256 b) internalpurereturns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/functionmul(uint256 a, uint256 b) internalpurereturns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/functiondiv(uint256 a, uint256 b) internalpurereturns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/functionmod(uint256 a, uint256 b) internalpurereturns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/functionsub(uint256 a,
uint256 b,
stringmemory errorMessage
) internalpurereturns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/functiondiv(uint256 a,
uint256 b,
stringmemory errorMessage
) internalpurereturns (uint256) {
unchecked {
require(b >0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/functionmod(uint256 a,
uint256 b,
stringmemory errorMessage
) internalpurereturns (uint256) {
unchecked {
require(b >0, errorMessage);
return a % b;
}
}
}