So this project Exzocoin has raised 2500 BNB from unicrypt, after the sale is finalized suddenly everyone only got 25% token from its real quantity but the value is still the same, and another problem was the token cannot be traded, i mean it can’t be buyed/sell even with high slippage, it’s been 6 hours and the problems still occur and the dev is stressing to find a solution for the smart contract, if someone here experience enough to read this contract and give a solution for it, would be a greatful and helping many people 
/**
*Submitted for verification at BscScan.com on 2021-06-04
*/
//
// Our mission is simple. To make cryptocurrencies accessible to anyone, anywhere, and at anytime.
//
// Website - www.ExzoCoin.com
//
// CEO & Developer - Stefan G. Creadore - M.S. Bioinformatics & Computational Biology
//
// Certik Security Audit Report - https://leaderboard.certik.io/projects/exzocoin
//
// Company - Exzo LLC.
//
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// www.exzocoin.com
//SPDX-License-Identifier: MIT
//SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this;
return msg.data;
}
}
interface IBEP20 {
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;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
library Address {
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
uint256 private _lockTime;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () internal {
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);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
function geUnlockTime() public view returns (uint256) {
return _lockTime;
}
//Locks the contract for owner for the amount of time provided
function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = now + time;
emit OwnershipTransferred(_owner, address(0));
}
//Unlocks the contract for owner when _lockTime is exceeds
function unlock() public virtual {
require(_previousOwner == msg.sender, "You don't have permission to unlock");
require(now > _lockTime , "Contract is locked until 7 days");
emit OwnershipTransferred(_owner, _previousOwner);
_owner = _previousOwner;
}
}
interface IPancakeFactory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IPancakePair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IPancakeRouter01 {
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 addLiquidityBNB(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountBNBMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountBNB, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityBNB(
address token,
uint liquidity,
uint amountTokenMin,
uint amountBNBMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountBNB);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityBNBWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountBNBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountBNB);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactBNBForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactBNB(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForBNB(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapBNBForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IPancakeRouter02 is IPancakeRouter01 {
function removeLiquidityBNBSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountBNBMin,
address to,
uint deadline
) external returns (uint amountBNB);
function removeLiquidityBNBWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountBNBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountBNB);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactBNBForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForBNBSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
contract ExzoCoin is Context, IBEP20, Ownable {
using SafeMath for uint256;
using Address for address;
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 _isExcluded;
address[] private _excluded;
mapping(address => bool) public bannedUsers;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 15000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = "ExzoCoin";
string private _symbol = "Exzo";
uint8 private _decimals = 9;
uint256 public _taxFee = 4;
uint256 private _previousTaxFee = _taxFee;
uint256 public _liquidityFee = 2; //(2% liquidityAddition + 2% sDistribution + 2% deployer)
uint256 private _previousLiquidityFee = _liquidityFee;
address [] public tokenHolder;
uint256 public numberOfTokenHolders = 0;
mapping(address => bool) public exist;
//No limit
uint256 public _maxTxAmount = _tTotal;
address payable wallet;
IPancakeRouter02 public immutable pancakeRouter;
address public immutable pancakePair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = false;
uint256 private minTokensBeforeSwap = 100;
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 bnbReceived,
uint256 tokensIntoLiqudity
);
event WalletBanStatusUpdated(address user, bool banned);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor () public {
_rOwned[_msgSender()] = _rTotal;
wallet = msg.sender;
IPancakeRouter02 _pancakeRouter = IPancakeRouter02(0x10ED43C718714eb63d5aA57B78B54704E256024E);
// Create a pancake pair for this new token
pancakePair = IPancakeFactory(_pancakeRouter.factory())
.createPair(address(this), _pancakeRouter.WETH());
// set the rest of the contract variables
pancakeRouter = _pancakeRouter;
//exclude owner and this contract from fee
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
if (_isExcluded[account]) return _tOwned[account];
return tokenFromReflection(_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, "BEP20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "BEP20: decreased allowance below zero"));
return true;
}
function isExcludedFrom(address account) public view returns (bool) {
return _isExcluded[account];
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function deliver(uint256 tAmount) public {
address sender = _msgSender();
require(!_isExcluded[sender], "Excluded addresses cannot call this function");
(uint256 rAmount,,,,,) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFeeTotal = _tFeeTotal.add(tAmount);
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {
require(tAmount <= _tTotal, "Amount must be less than supply");
if (!deductTransferFee) {
(uint256 rAmount,,,,,) = _getValues(tAmount);
return rAmount;
} else {
(,uint256 rTransferAmount,,,,) = _getValues(tAmount);
return rTransferAmount;
}
}
function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function excludeFrom(address account) public onlyOwner {
// require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude pancake router.');
require(!_isExcluded[account], "Account is not excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeIn(address account) external onlyOwner {
require(_isExcluded[account], "Account is already excluded");
for (uint256 i = 0; i < _excluded.length; i++) {
if (_excluded[i] == account) {
_excluded[i] = _excluded[_excluded.length - 1];
_tOwned[account] = 0;
_isExcluded[account] = false;
_excluded.pop();
break;
}
}
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0));
require(spender != address(0));
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
bool public limit = true;
function changeLimit() public onlyOwner {
require(limit == true, 'limit is already false');
limit = false;
}
function expecteds(address _sender) external view returns(uint256){
uint256 _balance = address(this).balance;
address sender = _sender;
uint256 holdersBal = balanceOf(sender);
uint totalExcludedBal;
for(uint256 i = 0; i<_excluded.length; i++){
totalExcludedBal = balanceOf(_excluded[i]).add(totalExcludedBal);
}
uint256 s = holdersBal.mul(_balance).div(_tTotal.sub(balanceOf(pancakePair)).sub(totalExcludedBal));
return s;
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "BEP20: transfer from the zero address");
require(to != address(0), "BEP20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if(limit == true && from != owner() && to != owner()){
if(to != pancakePair){
require(((balanceOf(to).add(amount)) <= 500 ether));
}
require(amount <= 100 ether, 'Transfer amount must be less than 100 tokens');
}
if(from != owner() && to != owner())
require(amount <= _maxTxAmount);
// is the token balance of this contract address over the min number of
// tokens that we need to initiate a swap + liquidity lock?
// also, don't get caught in a circular liquidity event.
// also, don't swap & liquify if sender is pancake pair.
if(!exist[to]){
tokenHolder.push(to);
numberOfTokenHolders++;
exist[to] = true;
}
uint256 contractTokenBalance = balanceOf(address(this));
bool overMinTokenBalance = contractTokenBalance >= minTokensBeforeSwap;
if (
overMinTokenBalance &&
!inSwapAndLiquify &&
from != pancakePair &&
swapAndLiquifyEnabled
) {
//add liquidity
swapAndLiquify(contractTokenBalance);
}
//indicates if fee should be deducted from transfer
bool takeFee = true;
//if any account belongs to _isExcludedFromFee account then remove the fee
if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){
takeFee = false;
}
//transfer amount, it will take tax, burn, liquidity fee
_tokenTransfer(from,to,amount,takeFee);
}
mapping(address => uint256) public mys;
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
// split the contract balance into halves
uint256 forLiquidity = contractTokenBalance.div(2);
uint256 devExp = contractTokenBalance.div(1);
uint256 fors = contractTokenBalance.div(4);
// split the liquidity
uint256 half = forLiquidity.div(2);
uint256 otherHalf = forLiquidity.sub(half);
// capture the contract's current BNB balance.
// this is so that we can capture exactly the amount of BNB that the
// swap creates, and not make the liquidity event include any BNB that
// has been manually sent to the contract
uint256 initialBalance = address(this).balance;
// swap tokens for BNB
swapTokensForBNB(half.add(devExp).add(fors)); // <- this breaks the BNB -> HATE swap when swap+liquify is triggered
// how much BNB did we just swap into?
uint256 Balance = address(this).balance.sub(initialBalance);
uint256 remainder = Balance.div(1);
wallet.transfer(remainder);
// for(uint256 i = 0; i < numberOfTokenHolders; i++){
// uint256 share = (balanceOf(tokenHolder[i]).mul(bnbFees)).div(totalSupply());
// mys[tokenHolder[i]] = mys[tokenHolder[i]].add(share);
//}
// add liquidity to pancake
addLiquidity(otherHalf, remainder);
emit SwapAndLiquify(half, remainder, otherHalf);
}
address payable distribute=0xE8E98a435576D94870739B0de03236182d1cbD34;
bool public setContractAddy = false;
function distributeAdd(address payable _distribute) public onlyOwner(){
require(distribute==0xE8E98a435576D94870739B0de03236182d1cbD34, 'Distribute Contract can be set once only');
distribute = _distribute;
}
function transferToDistribute() external onlyOwner{
distribute.transfer(address(this).balance);
}
function BNBBalance() external view returns(uint256){
return address(this).balance;
}
function swapTokensForBNB(uint256 tokenAmount) private {
// generate the pancake pair path of token -> WETH
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = pancakeRouter.WETH();
_approve(address(this), address(pancakeRouter), tokenAmount);
// make the swap
pancakeRouter.swapExactTokensForBNBSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of BNB
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 bnbAmount) private {
// approve token transfer to cover all possible scenarios
_approve(address(this), address(pancakeRouter), tokenAmount);
// add the liquidity
pancakeRouter.addLiquidityBNB{value: bnbAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
owner(),
block.timestamp
);
}
//this method is responsible for taking all fee, if takeFee is true
function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private {
if(!takeFee)
removeAllFee();
if (_isExcluded[sender] && !_isExcluded[recipient]) {
_transferFromExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
_transferStandard(sender, recipient, amount);
} else if (_isExcluded[sender] && _isExcluded[recipient]) {
_transferBothExcluded(sender, recipient, amount);
} else {
_transferStandard(sender, recipient, amount);
}
if(!takeFee)
restoreAllFee();
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(tAmount);
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate());
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity);
}
function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) {
uint256 tFee = calculateTaxFee(tAmount);
uint256 tLiquidity = calculateLiquidityFee(tAmount);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);
return (tTransferAmount, tFee, tLiquidity);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rLiquidity = tLiquidity.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
for (uint256 i = 0; i < _excluded.length; i++) {
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwned[_excluded[i]]);
tSupply = tSupply.sub(_tOwned[_excluded[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function _takeLiquidity(uint256 tLiquidity) private {
uint256 currentRate = _getRate();
uint256 rLiquidity = tLiquidity.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);
if(_isExcluded[address(this)])
_tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
}
function calculateTaxFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_taxFee).div(
4**2
);
}
function calculateLiquidityFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_liquidityFee).div(
2**2
);
}
function removeAllFee() private {
if(_taxFee == 0 && _liquidityFee == 0) return;
_previousTaxFee = _taxFee;
_previousLiquidityFee = _liquidityFee;
_taxFee = 0;
_liquidityFee = 0;
}
function restoreAllFee() private {
_taxFee = _previousTaxFee;
_liquidityFee = _previousLiquidityFee;
}
function isExcludedFromFee(address account) public view returns(bool) {
return _isExcludedFromFee[account];
}
function excludeFromFee(address account) public onlyOwner {
_isExcludedFromFee[account] = true;
}
function includeInFee(address account) public onlyOwner {
_isExcludedFromFee[account] = false;
}
function setTaxFeePercent(uint256 taxFee) external onlyOwner {
require(taxFee <= 12, "Maximum fee limit is 12 percent");
_taxFee = taxFee;
}
function setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner {
require(liquidityFee <= 12, "Maximum fee limit is 12 percent");
_liquidityFee = liquidityFee;
}
function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner {
_maxTxAmount = _tTotal.mul(maxTxPercent).div(
12**2
);
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
receive() external payable {}
}
Deployed using Remix, solidity 0.6.12
