SFZ [sportsfanszone] Token

SportsFansZone.addLiquidity(uint256,uint256) (#1868-1883) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
SportsFansZone.sendHolderDividends(uint256) (#1884-1891) sends eth to arbitrary user
Dangerous calls:
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in SportsFansZone._transfer(address,address,uint256) (#1738-1810):
External calls:
- swapAndDistribute(balanceOf(address(this))) (#1776)
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1858-1864)
External calls sending eth:
- swapAndDistribute(balanceOf(address(this))) (#1776)
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
State variables written after the call(s):
- super._transfer(from,address(this),fees) (#1792)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#1138)
- _balances[recipient] = _balances[recipient].add(amount) (#1139)
- super._transfer(from,to,amount) (#1795)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#1138)
- _balances[recipient] = _balances[recipient].add(amount) (#1139)
- _isSwapping = false (#1778)
Reentrancy in DividendPayingToken._withdrawDividendOfUser(address) (#1321-1337):
External calls:
- (success) = user.call{gas: _gasForWithdrawingDividendOfUser,value: _withdrawableDividend}() (#1326)
State variables written after the call(s):
- withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend) (#1329)
Reentrancy in SportsFansZone.tryToDistributeTokensManually() (#1812-1823):
External calls:
- swapAndDistribute(balanceOf(address(this))) (#1819)
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1858-1864)
External calls sending eth:
- swapAndDistribute(balanceOf(address(this))) (#1819)
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
State variables written after the call(s):
- _isSwapping = false (#1821)
Apply the check-effects-interactions pattern.

Additional information: link

Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)

SportsFansZone._transfer(address,address,uint256) (#1738-1810) contains a tautology or contradiction:
- require(bool,string)(amount >= 0,ERC20: Transfer amount must be greater or equals to zero) (#1741)
Fix the incorrect comparison by changing the value type or the comparison.

Additional information: link

Combination 1: Reentrancy vulnerabilities + Functions that send Ether to arbitraty destination. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.

Contract ownership is not renounced (belongs to a wallet)

SportsFansZone.claim() (#1712-1714) ignores return value by dividendTracker.processAccount(address(msg.sender),false) (#1713)
SportsFansZone._transfer(address,address,uint256) (#1738-1810) ignores return value by dividendTracker.process(gas) (#1803-1808)
SportsFansZone.addLiquidity(uint256,uint256) (#1868-1883) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
Ensure that all the return values of the function calls are used.

Additional information: link

DividendPayingToken.constructor(string,string)._name (#1276) shadows:
- ERC20._name (#960) (state variable)
DividendPayingToken.constructor(string,string)._symbol (#1276) shadows:
- ERC20._symbol (#961) (state variable)
Rename the local variables that shadow another component.

Additional information: link

SportsFansZone.setTradingEnabledTimestamp(uint256) (#1728-1731) should emit an event for:
- tradingEnabledTimestamp = timestamp (#1730)
SportsFansZone.setSwapTokenAtAmount(uint256) (#1954-1958) should emit an event for:
- _swapTokensAtAmount = amount * 10 ** 9 (#1956)
Emit an event for critical parameter changes.

Additional information: link

SportsFansZone.getStuckBNBs(address).to (#1922) lacks a zero-check on :
- to.transfer(address(this).balance) (#1924)
Check that the address is not zero.

Additional information: link

DividendPayingToken._withdrawDividendOfUser(address) (#1321-1337) has external calls inside a loop: (success) = user.call{gas: _gasForWithdrawingDividendOfUser,value: _withdrawableDividend}() (#1326)
Favor pull over push strategy for external calls.

Additional information: link

SafeMathInt.MAX_INT256 (#392) is never used in SafeMathInt (#390-448)
Remove unused state variables.

Additional information: link

SportsFansZone.BNBRewardsFee (#1444) should be constant
SportsFansZone.giftFee (#1447) should be constant
SportsFansZone.giftWallet (#1438) should be constant
SportsFansZone.liquidityFee (#1445) should be constant
SportsFansZone.marketingFee (#1446) should be constant
SportsFansZone.marketingWallet (#1437) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

SportsFansZone.swapAndDistribute(uint256) (#1824-1847) performs a multiplication on the result of a division:
-marketingAmount = newBalance.mul(marketingFee).div(85).mul(10) (#1835)
SportsFansZone.swapAndDistribute(uint256) (#1824-1847) performs a multiplication on the result of a division:
-dividendAmount = newBalance.mul(BNBRewardsFee).div(85).mul(10) (#1836)
SportsFansZone.swapAndDistribute(uint256) (#1824-1847) performs a multiplication on the result of a division:
-giftAmount = newBalance.mul(giftFee).div(85).mul(10) (#1837)
Consider ordering multiplication before division.

Additional information: link

Reentrancy in SportsFansZone.updateDividendTracker(address) (#1562-1582):
External calls:
- newDividendTracker.excludeFromDividends(address(newDividendTracker)) (#1569)
- newDividendTracker.excludeFromDividends(address(this)) (#1570)
- newDividendTracker.excludeFromDividends(owner()) (#1571)
- newDividendTracker.excludeFromDividends(address(uniswapV2Router)) (#1572)
- newDividendTracker.excludeFromDividends(address(marketingWallet)) (#1573)
- newDividendTracker.excludeFromDividends(address(giftWallet)) (#1574)
- newDividendTracker.excludeFromDividends(address(uniswapV2Pair)) (#1575)
State variables written after the call(s):
- dividendTracker = newDividendTracker (#1581)
Apply the check-effects-interactions pattern.

Additional information: link

SportsFansZone._transfer(address,address,uint256).claims (#1803) is a local variable never initialized
SportsFansZone._transfer(address,address,uint256).lastProcessedIndex (#1803) is a local variable never initialized
SportsFansZone._transfer(address,address,uint256).iterations (#1803) is a local variable never initialized
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

Additional information: link

Variable 'SportsFansZone._transfer(address,address,uint256).claims (#1803)' in SportsFansZone._transfer(address,address,uint256) (#1738-1810) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1804)
Variable 'SportsFansZone._transfer(address,address,uint256).iterations (#1803)' in SportsFansZone._transfer(address,address,uint256) (#1738-1810) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1804)
Variable 'SportsFansZone._transfer(address,address,uint256).lastProcessedIndex (#1803)' in SportsFansZone._transfer(address,address,uint256) (#1738-1810) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1804)
Move all variable declarations prior to any usage of the variable, and ensure that reaching a variable declaration does not depend on some conditional if it is used unconditionally.

Additional information: link

Reentrancy in SportsFansZone.constructor() (#1512-1550):
External calls:
- uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH()) (#1522-1523)
- _setAutomatedMarketMakerPair(uniswapV2Pair,true) (#1525)
- dividendTracker.excludeFromDividends(pair) (#1628)
- dividendTracker.excludeFromDividends(address(dividendTracker)) (#1528)
- dividendTracker.excludeFromDividends(address(this)) (#1529)
- dividendTracker.excludeFromDividends(owner()) (#1530)
- dividendTracker.excludeFromDividends(address(uniswapV2Router)) (#1531)
- dividendTracker.excludeFromDividends(address(marketingWallet)) (#1532)
- dividendTracker.excludeFromDividends(address(giftWallet)) (#1533)
- dividendTracker.excludeFromDividends(address(DEAD)) (#1534)
State variables written after the call(s):
- _mint(owner(),1 * 10 ** 15 * (10 ** 9)) (#1548)
- _balances[account] = _balances[account].add(amount) (#1158)
- _canTransferBeforeTradingIsEnabled[owner()] = true (#1546)
- excludeFromFees(liquidityWallet,true) (#1537)
- _isExcludedFromFees[account] = excluded (#1600)
- excludeFromFees(marketingWallet,true) (#1538)
- _isExcludedFromFees[account] = excluded (#1600)
- excludeFromFees(giftWallet,true) (#1539)
- _isExcludedFromFees[account] = excluded (#1600)
- excludeFromFees(address(this),true) (#1540)
- _isExcludedFromFees[account] = excluded (#1600)
- excludeFromMaxSellTransactionAmount(owner(),true) (#1543)
- _isExcludedFromMaxSellTransactionAmount[account] = excluded (#1613)
- _mint(owner(),1 * 10 ** 15 * (10 ** 9)) (#1548)
- _totalSupply = _totalSupply.add(amount) (#1157)
Reentrancy in SFZDividendTracker.processAccount(address,bool) (#2176-2186):
External calls:
- amount = _withdrawDividendOfUser(account) (#2177)
- (success) = user.call{gas: _gasForWithdrawingDividendOfUser,value: _withdrawableDividend}() (#1326)
State variables written after the call(s):
- lastClaimTimes[account] = block.timestamp (#2180)
Reentrancy in SportsFansZone.swapAndDistribute(uint256) (#1824-1847):
External calls:
- swapTokensForEth(amount.sub(liquidityTokensToNotSwap)) (#1831)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1858-1864)
- addLiquidity(liquidityTokensToNotSwap,liquidityAmount) (#1841)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
External calls sending eth:
- addLiquidity(liquidityTokensToNotSwap,liquidityAmount) (#1841)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
State variables written after the call(s):
- addLiquidity(liquidityTokensToNotSwap,liquidityAmount) (#1841)
- _allowances[owner][spender] = amount (#1204)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in SportsFansZone._setAutomatedMarketMakerPair(address,bool) (#1623-1632):
External calls:
- dividendTracker.excludeFromDividends(pair) (#1628)
Event emitted after the call(s):
- SetAutomatedMarketMakerPair(pair,value) (#1631)
Reentrancy in SportsFansZone._transfer(address,address,uint256) (#1738-1810):
External calls:
- swapAndDistribute(balanceOf(address(this))) (#1776)
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1858-1864)
External calls sending eth:
- swapAndDistribute(balanceOf(address(this))) (#1776)
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (#1140)
- super._transfer(from,address(this),fees) (#1792)
- Transfer(sender,recipient,amount) (#1140)
- super._transfer(from,to,amount) (#1795)
Reentrancy in SportsFansZone._transfer(address,address,uint256) (#1738-1810):
External calls:
- swapAndDistribute(balanceOf(address(this))) (#1776)
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1858-1864)
- dividendTracker.setBalance(address(from),balanceOf(from)) (#1797)
- dividendTracker.setBalance(address(to),balanceOf(to)) (#1798)
- dividendTracker.process(gas) (#1803-1808)
External calls sending eth:
- swapAndDistribute(balanceOf(address(this))) (#1776)
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
Event emitted after the call(s):
- ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1804)
Reentrancy in SportsFansZone.burn(uint256) (#1948-1952):
External calls:
- _transfer(_msgSender(),DEAD,amount) (#1949)
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1858-1864)
- dividendTracker.setBalance(address(from),balanceOf(from)) (#1797)
- dividendTracker.setBalance(address(to),balanceOf(to)) (#1798)
- dividendTracker.process(gas) (#1803-1808)
External calls sending eth:
- _transfer(_msgSender(),DEAD,amount) (#1949)
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
Event emitted after the call(s):
- Burn(amount) (#1950)
Reentrancy in SportsFansZone.constructor() (#1512-1550):
External calls:
- uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH()) (#1522-1523)
- _setAutomatedMarketMakerPair(uniswapV2Pair,true) (#1525)
- dividendTracker.excludeFromDividends(pair) (#1628)
Event emitted after the call(s):
- SetAutomatedMarketMakerPair(pair,value) (#1631)
- _setAutomatedMarketMakerPair(uniswapV2Pair,true) (#1525)
Reentrancy in SportsFansZone.constructor() (#1512-1550):
External calls:
- uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH()) (#1522-1523)
- _setAutomatedMarketMakerPair(uniswapV2Pair,true) (#1525)
- dividendTracker.excludeFromDividends(pair) (#1628)
- dividendTracker.excludeFromDividends(address(dividendTracker)) (#1528)
- dividendTracker.excludeFromDividends(address(this)) (#1529)
- dividendTracker.excludeFromDividends(owner()) (#1530)
- dividendTracker.excludeFromDividends(address(uniswapV2Router)) (#1531)
- dividendTracker.excludeFromDividends(address(marketingWallet)) (#1532)
- dividendTracker.excludeFromDividends(address(giftWallet)) (#1533)
- dividendTracker.excludeFromDividends(address(DEAD)) (#1534)
Event emitted after the call(s):
- ExcludeFromFees(account,excluded) (#1602)
- excludeFromFees(giftWallet,true) (#1539)
- ExcludeFromFees(account,excluded) (#1602)
- excludeFromFees(marketingWallet,true) (#1538)
- ExcludeFromFees(account,excluded) (#1602)
- excludeFromFees(liquidityWallet,true) (#1537)
- ExcludeFromFees(account,excluded) (#1602)
- excludeFromFees(address(this),true) (#1540)
- ExcludeFromMaxSellTransactionAmount(account,excluded) (#1614)
- excludeFromMaxSellTransactionAmount(owner(),true) (#1543)
- Transfer(address(0),account,amount) (#1159)
- _mint(owner(),1 * 10 ** 15 * (10 ** 9)) (#1548)
Reentrancy in SFZDividendTracker.processAccount(address,bool) (#2176-2186):
External calls:
- amount = _withdrawDividendOfUser(account) (#2177)
- (success) = user.call{gas: _gasForWithdrawingDividendOfUser,value: _withdrawableDividend}() (#1326)
Event emitted after the call(s):
- Claim(account,amount,automatic) (#2181)
Reentrancy in SportsFansZone.processDividendTracker(uint256) (#1708-1711):
External calls:
- (iterations,claims,lastProcessedIndex) = dividendTracker.process(gas) (#1709)
Event emitted after the call(s):
- ProcessedDividendTracker(iterations,claims,lastProcessedIndex,false,gas,tx.origin) (#1710)
Reentrancy in SportsFansZone.sendGiftDividends(uint256) (#1900-1906):
External calls:
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
Event emitted after the call(s):
- SendGiftDividends(amount) (#1904)
Reentrancy in SportsFansZone.sendHolderDividends(uint256) (#1884-1891):
External calls:
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
Event emitted after the call(s):
- SendHolderDividends(amount) (#1889)
Reentrancy in SportsFansZone.sendMarketingDividends(uint256) (#1893-1899):
External calls:
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
Event emitted after the call(s):
- SendMarketingDividends(amount) (#1897)
Reentrancy in SportsFansZone.swapAndDistribute(uint256) (#1824-1847):
External calls:
- swapTokensForEth(amount.sub(liquidityTokensToNotSwap)) (#1831)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1858-1864)
- addLiquidity(liquidityTokensToNotSwap,liquidityAmount) (#1841)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
External calls sending eth:
- addLiquidity(liquidityTokensToNotSwap,liquidityAmount) (#1841)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1205)
- addLiquidity(liquidityTokensToNotSwap,liquidityAmount) (#1841)
Reentrancy in SportsFansZone.swapAndDistribute(uint256) (#1824-1847):
External calls:
- swapTokensForEth(amount.sub(liquidityTokensToNotSwap)) (#1831)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1858-1864)
- addLiquidity(liquidityTokensToNotSwap,liquidityAmount) (#1841)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- sendHolderDividends(dividendAmount) (#1842)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
External calls sending eth:
- addLiquidity(liquidityTokensToNotSwap,liquidityAmount) (#1841)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- sendHolderDividends(dividendAmount) (#1842)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
Event emitted after the call(s):
- SendHolderDividends(amount) (#1889)
- sendHolderDividends(dividendAmount) (#1842)
Reentrancy in SportsFansZone.swapAndDistribute(uint256) (#1824-1847):
External calls:
- swapTokensForEth(amount.sub(liquidityTokensToNotSwap)) (#1831)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1858-1864)
- addLiquidity(liquidityTokensToNotSwap,liquidityAmount) (#1841)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- sendHolderDividends(dividendAmount) (#1842)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
- sendMarketingDividends(marketingAmount) (#1843)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
External calls sending eth:
- addLiquidity(liquidityTokensToNotSwap,liquidityAmount) (#1841)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- sendHolderDividends(dividendAmount) (#1842)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
- sendMarketingDividends(marketingAmount) (#1843)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
Event emitted after the call(s):
- SendMarketingDividends(amount) (#1897)
- sendMarketingDividends(marketingAmount) (#1843)
Reentrancy in SportsFansZone.swapAndDistribute(uint256) (#1824-1847):
External calls:
- swapTokensForEth(amount.sub(liquidityTokensToNotSwap)) (#1831)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1858-1864)
- addLiquidity(liquidityTokensToNotSwap,liquidityAmount) (#1841)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- sendHolderDividends(dividendAmount) (#1842)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
- sendMarketingDividends(marketingAmount) (#1843)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
- sendGiftDividends(giftAmount) (#1844)
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
External calls sending eth:
- addLiquidity(liquidityTokensToNotSwap,liquidityAmount) (#1841)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1874-1881)
- sendHolderDividends(dividendAmount) (#1842)
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
- sendMarketingDividends(marketingAmount) (#1843)
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
- sendGiftDividends(giftAmount) (#1844)
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
Event emitted after the call(s):
- SendGiftDividends(amount) (#1904)
- sendGiftDividends(giftAmount) (#1844)
- SwapAndLiquify(amount.sub(liquidityTokensToNotSwap),newBalance,liquidityTokensToNotSwap) (#1845)
Reentrancy in SportsFansZone.updateDividendTracker(address) (#1562-1582):
External calls:
- newDividendTracker.excludeFromDividends(address(newDividendTracker)) (#1569)
- newDividendTracker.excludeFromDividends(address(this)) (#1570)
- newDividendTracker.excludeFromDividends(owner()) (#1571)
- newDividendTracker.excludeFromDividends(address(uniswapV2Router)) (#1572)
- newDividendTracker.excludeFromDividends(address(marketingWallet)) (#1573)
- newDividendTracker.excludeFromDividends(address(giftWallet)) (#1574)
- newDividendTracker.excludeFromDividends(address(uniswapV2Pair)) (#1575)
Event emitted after the call(s):
- UpdateDividendTracker(newAddress,address(dividendTracker)) (#1579)
Apply the check-effects-interactions pattern.

Additional information: link

Ownable.unlock() (#777-782) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp > _lockTime,Contract is still locked) (#779)
SportsFansZone.getTradingIsEnabled() (#1724-1726) uses timestamp for comparisons
Dangerous comparisons:
- block.timestamp >= tradingEnabledTimestamp (#1725)
SportsFansZone.setTradingEnabledTimestamp(uint256) (#1728-1731) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(tradingEnabledTimestamp > block.timestamp,SFZ: Changing the timestamp is not allowed if the listing has already started) (#1729)
SportsFansZone._transfer(address,address,uint256) (#1738-1810) uses timestamp for comparisons
Dangerous comparisons:
- ! _isSwapping && tradingIsEnabled && isSellTransfer && from != address(uniswapV2Router) && ! _isExcludedFromMaxSellTransactionAmount[to] && ! _isExcludedFromMaxSellTransactionAmount[from] (#1754-1759)
- tradingIsEnabled && canSwap && ! _isSwapping && ! automatedMarketMakerPairs[from] && from != liquidityWallet && to != liquidityWallet (#1767-1772)
- takeFee = tradingIsEnabled && ! _isSwapping (#1781)
SportsFansZone.tryToDistributeTokensManually() (#1812-1823) uses timestamp for comparisons
Dangerous comparisons:
- getTradingIsEnabled() && ! _isSwapping (#1814-1815)
SFZDividendTracker.getAccount(address) (#2039-2081) uses timestamp for comparisons
Dangerous comparisons:
- nextClaimTime > block.timestamp (#2078-2080)
SFZDividendTracker.canAutoClaim(uint256) (#2102-2108) uses timestamp for comparisons
Dangerous comparisons:
- lastClaimTime > block.timestamp (#2103)
- block.timestamp.sub(lastClaimTime) >= claimWait (#2107)
Avoid relying on block.timestamp.

Additional information: link

Context._msgData() (#635-638) is never used and should be removed
SafeMath.mod(uint256,uint256) (#593-595) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#609-612) is never used and should be removed
SafeMathInt.abs(int256) (#438-441) is never used and should be removed
SafeMathInt.div(int256,int256) (#409-415) is never used and should be removed
SafeMathInt.mul(int256,int256) (#397-404) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version^0.8.11 (#7) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#151) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#172) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#227) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#289) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#316) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#384) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#453) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#470) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#618) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#644) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#708) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#810) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#893) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#921) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#1232) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version^0.8.11 (#1416) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
solc-0.8.11 is not recommended for deployment
Deploy with any of the following Solidity versions: 0.5.16 - 0.5.17, 0.6.11 - 0.6.12, 0.7.5 - 0.7.6 Use a simple pragma version that allows any of these versions. Consider using the latest version of Solidity for testing.

Additional information: link

Low level call in DividendPayingToken._withdrawDividendOfUser(address) (#1321-1337):
- (success) = user.call{gas: _gasForWithdrawingDividendOfUser,value: _withdrawableDividend}() (#1326)
Low level call in SportsFansZone.sendHolderDividends(uint256) (#1884-1891):
- (success) = address(address(dividendTracker)).call{value: amount}() (#1886)
Low level call in SportsFansZone.sendMarketingDividends(uint256) (#1893-1899):
- (success) = address(address(marketingWallet)).call{value: amount}() (#1894)
Low level call in SportsFansZone.sendGiftDividends(uint256) (#1900-1906):
- (success) = address(address(giftWallet)).call{value: amount}() (#1901)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Function IUniswapV2Router01.WETH() (#11) is not in mixedCase
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#189) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#190) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#207) is not in mixedCase
Parameter DividendPayingToken.dividendOf(address)._owner (#1348) is not in mixedCase
Parameter DividendPayingToken.withdrawableDividendOf(address)._owner (#1355) is not in mixedCase
Parameter DividendPayingToken.withdrawnDividendOf(address)._owner (#1362) is not in mixedCase
Parameter DividendPayingToken.accumulativeDividendOf(address)._owner (#1372) is not in mixedCase
Constant DividendPayingToken.magnitude (#1254) is not in UPPER_CASE_WITH_UNDERSCORES
Parameter SportsFansZone.blackList(address)._account (#1927) is not in mixedCase
Parameter SportsFansZone.removeFromBlacklist(address)._account (#1938) is not in mixedCase
Variable SportsFansZone.BNBRewardsFee (#1444) is not in mixedCase
Parameter SFZDividendTracker.getAccount(address)._account (#2039) is not in mixedCase
Variable SFZDividendTracker.MINIMUM_TOKEN_BALANCE_FOR_DIVIDENDS (#1979) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#636)" inContext (#630-639)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#16) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#17)
Variable DividendPayingToken._withdrawDividendOfUser(address)._withdrawableDividend (#1322) is too similar to SFZDividendTracker.getAccount(address).withdrawableDividends (#2044)
Prevent variables from having similar names.

Additional information: link

SportsFansZone.updateGasForProcessing(uint256) (#1642-1647) uses literals with too many digits:
- require(bool,string)(newValue >= 100000 && newValue <= 500000,SFZ: gasForProcessing must be between 100,000 and 500,000) (#1643)
SportsFansZone.slitherConstructorVariables() (#1426-1964) uses literals with too many digits:
- gasForProcessing = 300000 (#1452)
SportsFansZone.slitherConstructorConstantVariables() (#1426-1964) uses literals with too many digits:
- DEAD = 0x000000000000000000000000000000000000dEaD (#1439)
SFZDividendTracker.getAccountAtIndex(uint256) (#2083-2100) uses literals with too many digits:
- (0x0000000000000000000000000000000000000000,- 1,- 1,0,0,0,0,0) (#2094)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

get(IterableMapping.Map,address) should be declared external:
- IterableMapping.get(IterableMapping.Map,address) (#237-239)
getIndexOfKey(IterableMapping.Map,address) should be declared external:
- IterableMapping.getIndexOfKey(IterableMapping.Map,address) (#241-246)
getKeyAtIndex(IterableMapping.Map,uint256) should be declared external:
- IterableMapping.getKeyAtIndex(IterableMapping.Map,uint256) (#248-250)
size(IterableMapping.Map) should be declared external:
- IterableMapping.size(IterableMapping.Map) (#253-255)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#753-756)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#762-766)
lock(uint256) should be declared external:
- Ownable.lock(uint256) (#769-774)
unlock() should be declared external:
- Ownable.unlock() (#777-782)
authorize(address) should be declared external:
- Ownable.authorize(address) (#790-792)
unauthorize(address) should be declared external:
- Ownable.unauthorize(address) (#795-797)
name() should be declared external:
- ERC20.name() (#980-982)
symbol() should be declared external:
- ERC20.symbol() (#988-990)
decimals() should be declared external:
- ERC20.decimals() (#1005-1007)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#1031-1034)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#1039-1041)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#1050-1053)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#1068-1076)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#1090-1093)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#1109-1112)
withdrawDividend() should be declared external:
- DividendPayingToken.withdrawDividend() (#1315-1317)
- SFZDividendTracker.withdrawDividend() (#1997-1999)
dividendOf(address) should be declared external:
- DividendPayingToken.dividendOf(address) (#1348-1350)
withdrawnDividendOf(address) should be declared external:
- DividendPayingToken.withdrawnDividendOf(address) (#1362-1364)
unpause() should be declared external:
- SportsFansZone.unpause() (#1555-1557)
pause() should be declared external:
- SportsFansZone.pause() (#1558-1560)
updateDividendTracker(address) should be declared external:
- SportsFansZone.updateDividendTracker(address) (#1562-1582)
updateUniswapRouter(address) should be declared external:
- SportsFansZone.updateUniswapRouter(address) (#1584-1589)
excludeMultipleAccountsFromFees(address[],bool) should be declared external:
- SportsFansZone.excludeMultipleAccountsFromFees(address[],bool) (#1605-1609)
setAutomatedMarketMakerPair(address,bool) should be declared external:
- SportsFansZone.setAutomatedMarketMakerPair(address,bool) (#1617-1621)
updateLiquidityWallet(address) should be declared external:
- SportsFansZone.updateLiquidityWallet(address) (#1635-1640)
updateGasForProcessing(uint256) should be declared external:
- SportsFansZone.updateGasForProcessing(uint256) (#1642-1647)
isExcludedFromFees(address) should be declared external:
- SportsFansZone.isExcludedFromFees(address) (#1661-1663)
isExcludedFromDividends(address) should be declared external:
- SportsFansZone.isExcludedFromDividends(address) (#1664-1666)
isBlacklisted(address) should be declared external:
- SportsFansZone.isBlacklisted(address) (#1667-1669)
isExcludedFromMaxSellTransactionAmount(address) should be declared external:
- SportsFansZone.isExcludedFromMaxSellTransactionAmount(address) (#1670-1672)
withdrawableDividendOf(address) should be declared external:
- SportsFansZone.withdrawableDividendOf(address) (#1674-1676)
dividendTokenBalanceOf(address) should be declared external:
- SportsFansZone.dividendTokenBalanceOf(address) (#1678-1680)
blackList(address) should be declared external:
- SportsFansZone.blackList(address) (#1927-1936)
removeFromBlacklist(address) should be declared external:
- SportsFansZone.removeFromBlacklist(address) (#1938-1942)
getAccountAtIndex(uint256) should be declared external:
- SFZDividendTracker.getAccountAtIndex(uint256) (#2083-2100)
process(uint256) should be declared external:
- SFZDividendTracker.process(uint256) (#2129-2174)
Use the external attribute for functions never called from the contract.

Additional information: link

Token seems to be untradeable: there is no PancakeSwap trading pair and no trading volumes. Ignore for presale.

Number of Binance Smart Chain (BSC) token holders is less than 100. Token is either dead or inactive. Ignore for presale.

Unable to find website, listings and other project-related information

Young tokens have high risks of scam / price dump / death

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank