WuDajing Token

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

Reentrancy in WuDajing._transfer(address,address,uint256) (#652-673):
External calls:
- swapAndLiquify(contractTokenBalance) (#666)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#697)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#666)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- address(devAddress).transfer(devBalance) (#688)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (#672)
- _devFee = _previousDevFee (#637)
- _devFee = 0 (#632)
- _tokenTransfer(from,to,amount,takeFee) (#672)
- _liquidityFee = _previousLiquidityFee (#636)
- _liquidityFee = 0 (#631)
- _tokenTransfer(from,to,amount,takeFee) (#672)
- _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity) (#610)
- _tOwned[address(this)] = _tOwned[address(this)].add(tDev) (#614)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#544)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#545)
Apply the check-effects-interactions pattern.

Additional information: link

WuDajing.swapAndLiquify(uint256) (#675-690) performs a multiplication on the result of a division:
-halfLiquidityFee = _liquidityFee.div(2) (#677)
-halfLiquidityFeeGet = newBalance.mul(halfLiquidityFee).div(allNeedToSwap) (#685)
Consider ordering multiplication before division.

Additional information: link

WuDajing.addLiquidity(uint256,uint256) (#700-703) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
Ensure that all the return values of the function calls are used.

Additional information: link

WuDajing.allowance(address,address).owner (#509) shadows:
- Ownable.owner() (#184-186) (function)
WuDajing._approve(address,address,uint256).owner (#641) shadows:
- Ownable.owner() (#184-186) (function)
Rename the local variables that shadow another component.

Additional information: link

WuDajing.setDevFeePercent(uint256) (#559-562) should emit an event for:
- _devFee = devFee (#560)
- _previousDevFee = _devFee (#561)
WuDajing.setLiquidityFeePercent(uint256) (#564-567) should emit an event for:
- _liquidityFee = liquidityFee (#565)
- _previousLiquidityFee = _liquidityFee (#566)
Emit an event for critical parameter changes.

Additional information: link

Reentrancy in WuDajing._transfer(address,address,uint256) (#652-673):
External calls:
- swapAndLiquify(contractTokenBalance) (#666)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#697)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#666)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- address(devAddress).transfer(devBalance) (#688)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (#672)
- _previousDevFee = _devFee (#628)
- _tokenTransfer(from,to,amount,takeFee) (#672)
- _previousLiquidityFee = _liquidityFee (#629)
Reentrancy in WuDajing.constructor() (#471-482):
External calls:
- uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#475)
State variables written after the call(s):
- _isExcludedFromFee[owner()] = true (#478)
- _isExcludedFromFee[address(this)] = true (#479)
- devAddress = owner() (#477)
- uniswapV2Router = _uniswapV2Router (#476)
Reentrancy in WuDajing.swapAndLiquify(uint256) (#675-690):
External calls:
- swapTokensForEth(allNeedToSwapToken) (#682)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#697)
- addLiquidity(otherToken,halfLiquidityFeeGet) (#687)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
External calls sending eth:
- addLiquidity(otherToken,halfLiquidityFeeGet) (#687)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
State variables written after the call(s):
- addLiquidity(otherToken,halfLiquidityFeeGet) (#687)
- _allowances[owner][spender] = amount (#648)
Reentrancy in WuDajing.transferFrom(address,address,uint256) (#518-526):
External calls:
- _transfer(sender,recipient,amount) (#523)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#697)
External calls sending eth:
- _transfer(sender,recipient,amount) (#523)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- address(devAddress).transfer(devBalance) (#688)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#524)
- _allowances[owner][spender] = amount (#648)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in WuDajing._transfer(address,address,uint256) (#652-673):
External calls:
- swapAndLiquify(contractTokenBalance) (#666)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#697)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#666)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- address(devAddress).transfer(devBalance) (#688)
Event emitted after the call(s):
- Transfer(sender,recipient,tTransferAmount) (#548)
- _tokenTransfer(from,to,amount,takeFee) (#672)
Reentrancy in WuDajing.constructor() (#471-482):
External calls:
- uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#475)
Event emitted after the call(s):
- Transfer(address(0),_msgSender(),_tTotal) (#481)
Reentrancy in WuDajing.swapAndLiquify(uint256) (#675-690):
External calls:
- swapTokensForEth(allNeedToSwapToken) (#682)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#697)
- addLiquidity(otherToken,halfLiquidityFeeGet) (#687)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
External calls sending eth:
- addLiquidity(otherToken,halfLiquidityFeeGet) (#687)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#649)
- addLiquidity(otherToken,halfLiquidityFeeGet) (#687)
Reentrancy in WuDajing.swapAndLiquify(uint256) (#675-690):
External calls:
- swapTokensForEth(allNeedToSwapToken) (#682)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#697)
- addLiquidity(otherToken,halfLiquidityFeeGet) (#687)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
External calls sending eth:
- addLiquidity(otherToken,halfLiquidityFeeGet) (#687)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- address(devAddress).transfer(devBalance) (#688)
Event emitted after the call(s):
- SwapAndLiquify(allNeedToSwapToken,newBalance,otherToken) (#689)
Reentrancy in WuDajing.transferFrom(address,address,uint256) (#518-526):
External calls:
- _transfer(sender,recipient,amount) (#523)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#697)
External calls sending eth:
- _transfer(sender,recipient,amount) (#523)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- address(devAddress).transfer(devBalance) (#688)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#649)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#524)
Apply the check-effects-interactions pattern.

Additional information: link

Address.isContract(address) (#95-103) uses assembly
- INLINE ASM (#99-101)
Address._functionCallWithValue(address,bytes,uint256,string) (#143-169) uses assembly
- INLINE ASM (#161-164)
Do not use evm assembly.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (#143-169) is never used and should be removed
Address.functionCall(address,bytes) (#113-115) is never used and should be removed
Address.functionCall(address,bytes,string) (#117-123) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#125-131) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#133-141) is never used and should be removed
Address.isContract(address) (#95-103) is never used and should be removed
Address.sendValue(address,uint256) (#105-111) is never used and should be removed
Context._msgData() (#88-91) is never used and should be removed
SafeMath.mod(uint256,uint256) (#69-71) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#73-80) is never used and should be removed
Remove unused functions.

Additional information: link

WuDajing._previousLiquidityFee (#443) is set pre-construction with a non-constant function or state variable:
- _liquidityFee
WuDajing._previousDevFee (#446) is set pre-construction with a non-constant function or state variable:
- _devFee
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

Low level call in Address.sendValue(address,uint256) (#105-111):
- (success) = recipient.call{value: amount}() (#109)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#143-169):
- (success,returndata) = target.call{value: weiValue}(data) (#152)
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() (#229) is not in mixedCase
Parameter WuDajing.setSwapAndLiquifyEnabled(bool)._enabled (#569) is not in mixedCase
Parameter WuDajing.setNumTokensSellToAddToLiquidity(uint256)._numTokensSellToAddToLiquidity (#574) is not in mixedCase
Parameter WuDajing.setDevAddress(address)._devAddress (#580) is not in mixedCase
Parameter WuDajing.calculateLiquidityFee(uint256)._amount (#617) is not in mixedCase
Parameter WuDajing.calculateDevFee(uint256)._amount (#621) is not in mixedCase
Variable WuDajing._liquidityFee (#442) is not in mixedCase
Variable WuDajing._devFee (#445) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#89)" inContext (#83-92)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Reentrancy in WuDajing._transfer(address,address,uint256) (#652-673):
External calls:
- swapAndLiquify(contractTokenBalance) (#666)
- address(devAddress).transfer(devBalance) (#688)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#666)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- address(devAddress).transfer(devBalance) (#688)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (#672)
- _devFee = _previousDevFee (#637)
- _devFee = 0 (#632)
- _tokenTransfer(from,to,amount,takeFee) (#672)
- _liquidityFee = _previousLiquidityFee (#636)
- _liquidityFee = 0 (#631)
- _tokenTransfer(from,to,amount,takeFee) (#672)
- _previousDevFee = _devFee (#628)
- _tokenTransfer(from,to,amount,takeFee) (#672)
- _previousLiquidityFee = _liquidityFee (#629)
- _tokenTransfer(from,to,amount,takeFee) (#672)
- _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity) (#610)
- _tOwned[address(this)] = _tOwned[address(this)].add(tDev) (#614)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#544)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#545)
Event emitted after the call(s):
- Transfer(sender,recipient,tTransferAmount) (#548)
- _tokenTransfer(from,to,amount,takeFee) (#672)
Reentrancy in WuDajing.swapAndLiquify(uint256) (#675-690):
External calls:
- address(devAddress).transfer(devBalance) (#688)
External calls sending eth:
- addLiquidity(otherToken,halfLiquidityFeeGet) (#687)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- address(devAddress).transfer(devBalance) (#688)
Event emitted after the call(s):
- SwapAndLiquify(allNeedToSwapToken,newBalance,otherToken) (#689)
Reentrancy in WuDajing.transferFrom(address,address,uint256) (#518-526):
External calls:
- _transfer(sender,recipient,amount) (#523)
- address(devAddress).transfer(devBalance) (#688)
External calls sending eth:
- _transfer(sender,recipient,amount) (#523)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#702)
- address(devAddress).transfer(devBalance) (#688)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#524)
- _allowances[owner][spender] = amount (#648)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#649)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#524)
Apply the check-effects-interactions pattern.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#234) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#235)
Prevent variables from having similar names.

Additional information: link

WuDajing.slitherConstructorVariables() (#428-716) uses literals with too many digits:
- _tTotal = 100000000 * 10 ** 18 (#436)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

Ownable._previousOwner (#174) is never used in WuDajing (#428-716)
Ownable._lockTime (#175) is never used in WuDajing (#428-716)
Remove unused state variables.

Additional information: link

Ownable._lockTime (#175) should be constant
Ownable._previousOwner (#174) should be constant
WuDajing._decimals (#440) should be constant
WuDajing._name (#438) should be constant
WuDajing._symbol (#439) should be constant
WuDajing._tTotal (#436) should be constant
WuDajing.router (#452) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#193-196)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#198-202)
name() should be declared external:
- WuDajing.name() (#484-486)
symbol() should be declared external:
- WuDajing.symbol() (#488-490)
decimals() should be declared external:
- WuDajing.decimals() (#492-494)
totalSupply() should be declared external:
- WuDajing.totalSupply() (#496-498)
transfer(address,uint256) should be declared external:
- WuDajing.transfer(address,uint256) (#504-507)
allowance(address,address) should be declared external:
- WuDajing.allowance(address,address) (#509-511)
approve(address,uint256) should be declared external:
- WuDajing.approve(address,uint256) (#513-516)
transferFrom(address,address,uint256) should be declared external:
- WuDajing.transferFrom(address,address,uint256) (#518-526)
increaseAllowance(address,uint256) should be declared external:
- WuDajing.increaseAllowance(address,uint256) (#528-531)
decreaseAllowance(address,uint256) should be declared external:
- WuDajing.decreaseAllowance(address,uint256) (#533-536)
excludeFromFee(address) should be declared external:
- WuDajing.excludeFromFee(address) (#551-553)
includeInFee(address) should be declared external:
- WuDajing.includeInFee(address) (#555-557)
setSwapAndLiquifyEnabled(bool) should be declared external:
- WuDajing.setSwapAndLiquifyEnabled(bool) (#569-572)
setNumTokensSellToAddToLiquidity(uint256) should be declared external:
- WuDajing.setNumTokensSellToAddToLiquidity(uint256) (#574-577)
setDevAddress(address) should be declared external:
- WuDajing.setDevAddress(address) (#580-584)
setBlackAddress(address) should be declared external:
- WuDajing.setBlackAddress(address) (#586-588)
relieveBlackAddress(address) should be declared external:
- WuDajing.relieveBlackAddress(address) (#590-592)
withDraw() should be declared external:
- WuDajing.withDraw() (#594-596)
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 low.

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