DFT [DogeFan] Token

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

Reentrancy in DogeFanToken._transfer(address,address,uint256) (#744-797):
External calls:
- swapAndLiquify(tokensToSwap) (#777)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
External calls sending eth:
- swapAndLiquify(tokensToSwap) (#777)
- recipient.transfer(amount) (#963)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
State variables written after the call(s):
- _transferStandard(sender,recipient,amount) (#792)
- _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity) (#898)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#801)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#802)
- _transferStandard(sender,recipient,amount) (#792)
- _rTotal = _rTotal.sub(rFee) (#809)
Apply the check-effects-interactions pattern.

Additional information: link

DogeFanToken._tOwned (#521) is never initialized. It is used in:
- DogeFanToken._getCurrentSupply() (#880-893)
DogeFanToken._excluded (#526) is never initialized. It is used in:
- DogeFanToken._getCurrentSupply() (#880-893)
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

DogeFanToken._getTValues(uint256) (#837-852) performs a multiplication on the result of a division:
-tFee = tAmount.div(10 ** 2).mul(_taxFee).mul(multiplier) (#847)
DogeFanToken._getTValues(uint256) (#837-852) performs a multiplication on the result of a division:
-tLiquidity = tAmount.div(10 ** 2).mul(_liquidityFee).mul(multiplier) (#848-849)
DogeFanToken.swapAndLiquify(uint256) (#901-931) performs a multiplication on the result of a division:
-liquidtyPortion = contractTokenBalance.div(10 ** 2).mul(40) (#903)
DogeFanToken.slitherConstructorVariables() (#517-968) performs a multiplication on the result of a division:
-_maxWallet = _tTotal.div(10 ** 2).mul(100) (#535)
Consider ordering multiplication before division.

Additional information: link

DogeFanToken._transfer(address,address,uint256) (#744-797) uses tx.origin for authorization: require(bool,string)(balanceOf(tx.origin) + amount <= _maxWallet,Exceeds maximum wallet token amount) (#759-763)
Do not use tx.origin for authorization.

Additional information: link

DogeFanToken.addLiquidity(uint256,uint256) (#949-960) ignores return value by pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
Ensure that all the return values of the function calls are used.

Additional information: link

DogeFanToken.allowance(address,address).owner (#645) shadows:
- Ownable.owner() (#134-136) (function)
DogeFanToken._approve(address,address,uint256).owner (#710) shadows:
- Ownable.owner() (#134-136) (function)
Rename the local variables that shadow another component.

Additional information: link

Reentrancy in DogeFanToken._transfer(address,address,uint256) (#744-797):
External calls:
- swapAndLiquify(tokensToSwap) (#777)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
External calls sending eth:
- swapAndLiquify(tokensToSwap) (#777)
- recipient.transfer(amount) (#963)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
State variables written after the call(s):
- removeAllFee() (#790)
- _liquidityFee = 0 (#728)
- restoreAllFee() (#794)
- _liquidityFee = _previousLiquidityFee (#741)
- turnOffPenalties() (#796)
- _penaltiesEnabled = false (#732)
- removeAllFee() (#790)
- _previousLiquidityFee = _liquidityFee (#725)
- removeAllFee() (#790)
- _previousTaxFee = _taxFee (#724)
- _transferStandard(sender,recipient,amount) (#792)
- _tFeeTotal = _tFeeTotal.add(tFee) (#810)
- removeAllFee() (#790)
- _taxFee = 0 (#727)
- restoreAllFee() (#794)
- _taxFee = _previousTaxFee (#740)
Reentrancy in DogeFanToken.constructor() (#562-576):
External calls:
- pcsV2Pair = IPancakeFactory(_pancakeswapV2Router.factory()).createPair(address(this),_pancakeswapV2Router.WETH()) (#569-572)
State variables written after the call(s):
- pcsV2Router = _pancakeswapV2Router (#573)
Reentrancy in DogeFanToken.swapAndLiquify(uint256) (#901-931):
External calls:
- swapTokensForBNB(half) (#911)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
External calls sending eth:
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- _allowances[owner][spender] = amount (#717)
Reentrancy in DogeFanToken.swapAndLiquify(uint256) (#901-931):
External calls:
- swapTokensForBNB(half) (#911)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
- swapTokensForBNB(Portion) (#922)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
External calls sending eth:
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
State variables written after the call(s):
- swapTokensForBNB(Portion) (#922)
- _allowances[owner][spender] = amount (#717)
Reentrancy in DogeFanToken.transferFrom(address,address,uint256) (#663-678):
External calls:
- _transfer(sender,recipient,amount) (#668)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
External calls sending eth:
- _transfer(sender,recipient,amount) (#668)
- recipient.transfer(amount) (#963)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#669-676)
- _allowances[owner][spender] = amount (#717)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in DogeFanToken._transfer(address,address,uint256) (#744-797):
External calls:
- swapAndLiquify(tokensToSwap) (#777)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
External calls sending eth:
- swapAndLiquify(tokensToSwap) (#777)
- recipient.transfer(amount) (#963)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
Event emitted after the call(s):
- Transfer(sender,recipient,tTransferAmount) (#805)
- _transferStandard(sender,recipient,amount) (#792)
Reentrancy in DogeFanToken.constructor() (#562-576):
External calls:
- pcsV2Pair = IPancakeFactory(_pancakeswapV2Router.factory()).createPair(address(this),_pancakeswapV2Router.WETH()) (#569-572)
Event emitted after the call(s):
- Transfer(address(0),_msgSender(),_tTotal) (#575)
Reentrancy in DogeFanToken.swapAndLiquify(uint256) (#901-931):
External calls:
- swapTokensForBNB(half) (#911)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
External calls sending eth:
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#718)
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- LiquiditySwapped(half,newBalanceFromLiquify,otherHalf) (#917)
Reentrancy in DogeFanToken.swapAndLiquify(uint256) (#901-931):
External calls:
- swapTokensForBNB(half) (#911)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
- swapTokensForBNB(Portion) (#922)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
External calls sending eth:
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#718)
- swapTokensForBNB(Portion) (#922)
Reentrancy in DogeFanToken.swapAndLiquify(uint256) (#901-931):
External calls:
- swapTokensForBNB(half) (#911)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
- swapTokensForBNB(Portion) (#922)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
External calls sending eth:
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
- TransferETH(address(marketingswap),address(this).balance) (#928)
- recipient.transfer(amount) (#963)
Event emitted after the call(s):
- TokensSwapped(Portion,BalanceReceived,totalBalanceToSend,marketingswap) (#930)
Reentrancy in DogeFanToken.transferFrom(address,address,uint256) (#663-678):
External calls:
- _transfer(sender,recipient,amount) (#668)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#940-946)
External calls sending eth:
- _transfer(sender,recipient,amount) (#668)
- recipient.transfer(amount) (#963)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#718)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#669-676)
Apply the check-effects-interactions pattern.

Additional information: link

DogeFanToken._getAntiDumpMultiplier() (#819-835) uses timestamp for comparisons
Dangerous comparisons:
- time_since_start < 1 * hour (#823)
- time_since_start < 2 * hour (#825)
- time_since_start < 3 * hour (#827)
Avoid relying on block.timestamp.

Additional information: link

Different versions of Solidity is used:
- Version used: ['>=0.5.0', '>=0.6.2', '^0.6.12']
- ^0.6.12 (#1)
- >=0.6.2 (#162)
- >=0.6.2 (#323)
- >=0.5.0 (#372)
- >=0.5.0 (#406)
Use one Solidity version.

Additional information: link

Context._msgData() (#50-53) is never used and should be removed
SafeMath.mod(uint256,uint256) (#106-108) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#110-117) is never used and should be removed
Remove unused functions.

Additional information: link

DogeFanToken._previousTaxFee (#538) is set pre-construction with a non-constant function or state variable:
- _taxFee
DogeFanToken._previousLiquidityFee (#539) is set pre-construction with a non-constant function or state variable:
- _liquidityFee
Remove any initialization of state variables via non-constant state variables or function calls. If variables must be set upon contract deployment, locate initialization in the constructor instead.

Additional information: link

Pragma version>=0.6.2 (#162) allows old versions
Pragma version>=0.6.2 (#323) allows old versions
Pragma version>=0.5.0 (#372) allows old versions
Pragma version>=0.5.0 (#406) allows old versions
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

Function IPancakeRouter01.WETH() (#167) is not in mixedCase
Function IPancakeFactory.INIT_CODE_PAIR_HASH() (#403) is not in mixedCase
Function IPancakePair.DOMAIN_SEPARATOR() (#441) is not in mixedCase
Function IPancakePair.PERMIT_TYPEHASH() (#443) is not in mixedCase
Function IPancakePair.MINIMUM_LIQUIDITY() (#474) is not in mixedCase
Function DogeFanToken.TransferETH(address,uint256) (#962-964) is not in mixedCase
Constant DogeFanToken._tTotal (#531) is not in UPPER_CASE_WITH_UNDERSCORES
Variable DogeFanToken._taxFee (#536) is not in mixedCase
Variable DogeFanToken._liquidityFee (#537) is not in mixedCase
Variable DogeFanToken._previousTaxFee (#538) is not in mixedCase
Variable DogeFanToken._previousLiquidityFee (#539) is not in mixedCase
Variable DogeFanToken._start_timestamp (#547) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#51)" inContext (#43-54)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Reentrancy in DogeFanToken._transfer(address,address,uint256) (#744-797):
External calls:
- swapAndLiquify(tokensToSwap) (#777)
- recipient.transfer(amount) (#963)
External calls sending eth:
- swapAndLiquify(tokensToSwap) (#777)
- recipient.transfer(amount) (#963)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
State variables written after the call(s):
- removeAllFee() (#790)
- _liquidityFee = 0 (#728)
- restoreAllFee() (#794)
- _liquidityFee = _previousLiquidityFee (#741)
- turnOffPenalties() (#796)
- _penaltiesEnabled = false (#732)
- removeAllFee() (#790)
- _previousLiquidityFee = _liquidityFee (#725)
- removeAllFee() (#790)
- _previousTaxFee = _taxFee (#724)
- _transferStandard(sender,recipient,amount) (#792)
- _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity) (#898)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#801)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#802)
- _transferStandard(sender,recipient,amount) (#792)
- _rTotal = _rTotal.sub(rFee) (#809)
- _transferStandard(sender,recipient,amount) (#792)
- _tFeeTotal = _tFeeTotal.add(tFee) (#810)
- removeAllFee() (#790)
- _taxFee = 0 (#727)
- restoreAllFee() (#794)
- _taxFee = _previousTaxFee (#740)
Event emitted after the call(s):
- Transfer(sender,recipient,tTransferAmount) (#805)
- _transferStandard(sender,recipient,amount) (#792)
Reentrancy in DogeFanToken.swapAndLiquify(uint256) (#901-931):
External calls:
- TransferETH(address(marketingswap),address(this).balance) (#928)
- recipient.transfer(amount) (#963)
External calls sending eth:
- addLiquidity(otherHalf,newBalanceFromLiquify) (#915)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
- TransferETH(address(marketingswap),address(this).balance) (#928)
- recipient.transfer(amount) (#963)
Event emitted after the call(s):
- TokensSwapped(Portion,BalanceReceived,totalBalanceToSend,marketingswap) (#930)
Reentrancy in DogeFanToken.transferFrom(address,address,uint256) (#663-678):
External calls:
- _transfer(sender,recipient,amount) (#668)
- recipient.transfer(amount) (#963)
External calls sending eth:
- _transfer(sender,recipient,amount) (#668)
- recipient.transfer(amount) (#963)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#952-959)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#669-676)
- _allowances[owner][spender] = amount (#717)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#718)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#669-676)
Apply the check-effects-interactions pattern.

Additional information: link

Variable IPancakeRouter01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#172) is too similar to IPancakeRouter01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#173)
Variable DogeFanToken._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#871) is too similar to DogeFanToken._getValues(uint256).tTransferAmount (#814)
Variable DogeFanToken._transferStandard(address,address,uint256).rTransferAmount (#800) is too similar to DogeFanToken._transferStandard(address,address,uint256).tTransferAmount (#800)
Variable DogeFanToken._transferStandard(address,address,uint256).rTransferAmount (#800) is too similar to DogeFanToken._getValues(uint256).tTransferAmount (#814)
Variable DogeFanToken._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#871) is too similar to DogeFanToken._getTValues(uint256).tTransferAmount (#850)
Variable DogeFanToken._getValues(uint256).rTransferAmount (#815) is too similar to DogeFanToken._transferStandard(address,address,uint256).tTransferAmount (#800)
Variable DogeFanToken._getValues(uint256).rTransferAmount (#815) is too similar to DogeFanToken._getValues(uint256).tTransferAmount (#814)
Variable DogeFanToken._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#871) is too similar to DogeFanToken._transferStandard(address,address,uint256).tTransferAmount (#800)
Variable DogeFanToken._getValues(uint256).rTransferAmount (#815) is too similar to DogeFanToken._getTValues(uint256).tTransferAmount (#850)
Variable DogeFanToken._transferStandard(address,address,uint256).rTransferAmount (#800) is too similar to DogeFanToken._getTValues(uint256).tTransferAmount (#850)
Prevent variables from having similar names.

Additional information: link

DogeFanToken.slitherConstructorVariables() (#517-968) uses literals with too many digits:
- _numOfTokensToExchange = 10000000 * 10 ** 6 * 10 ** 9 (#534)
DogeFanToken.slitherConstructorConstantVariables() (#517-968) uses literals with too many digits:
- _tTotal = 1000000000 * 10 ** 6 * 10 ** 9 (#531)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

DogeFanToken._decimals (#546) should be constant
DogeFanToken._maxWallet (#535) should be constant
DogeFanToken._name (#544) should be constant
DogeFanToken._numOfTokensToExchange (#534) should be constant
DogeFanToken._symbol (#545) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#143-146)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#148-150)
name() should be declared external:
- DogeFanToken.name() (#584-586)
symbol() should be declared external:
- DogeFanToken.symbol() (#588-590)
decimals() should be declared external:
- DogeFanToken.decimals() (#592-594)
getEquivalentValue() should be declared external:
- DogeFanToken.getEquivalentValue() (#596-614)
getPairReserves() should be declared external:
- DogeFanToken.getPairReserves() (#617-622)
totalSupply() should be declared external:
- DogeFanToken.totalSupply() (#624-626)
isExcluded(address) should be declared external:
- DogeFanToken.isExcluded(address) (#632-634)
transfer(address,uint256) should be declared external:
- DogeFanToken.transfer(address,uint256) (#636-643)
allowance(address,address) should be declared external:
- DogeFanToken.allowance(address,address) (#645-652)
approve(address,uint256) should be declared external:
- DogeFanToken.approve(address,uint256) (#654-661)
transferFrom(address,address,uint256) should be declared external:
- DogeFanToken.transferFrom(address,address,uint256) (#663-678)
totalFees() should be declared external:
- DogeFanToken.totalFees() (#680-682)
inSwapAndLiquify() should be declared external:
- DogeFanToken.inSwapAndLiquify() (#684-686)
reflect(uint256) should be declared external:
- DogeFanToken.reflect(uint256) (#688-694)
Use the external attribute for functions never called from the contract.

Additional information: link

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

Average PancakeSwap trading volume, liqudity, number of swaps are extremely low. Token seems to be dead.

Token is deployed only at one blockchain

Token has only one trading pair

Unable to find PancakeSwap trading pair to compute liquidity.

Unable to find PancakeSwap trading pair to compute volume.

Unable to find PancakeSwap trading pair to compute number of swaps.

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