Yield farming is the process of token holders maximizing rewards across various DeFi platforms. Yield farmers provide liquidity to various token pairs and earn rewards in cryptocurrencies.
Lately, this type of investment platforms have presented a range of new features and mechanisms trying to grab new investors, but in the end, most do not comply with what would initially be expected and in the meantime, the true experience of farming with so much bureaucracy is lost with the most users don't even knowing what it's the use of it or how to use it.
At Lowcostswap, in addition to opting for very low deposit fees and practically zero transfer fees, we also choose to maintain the pioneering idea of decentralized finance, Keep it simple!
Lowcost.addLiquidity(uint256,uint256) (#1440-1453) sends eth to arbitrary user
Dangerous calls:
- swapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lpEarner,block.timestamp) (#1445-1452)
Ensure that an arbitrary user cannot withdraw unauthorized funds.
Additional information: link
Reentrancy in Lowcost._transfer(address,address,uint256) (#1356-1388):
External calls:
- swapAndLiquify() (#1365)
- swapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lpEarner,block.timestamp) (#1445-1452)
- swapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1430-1436)
External calls sending eth:
- swapAndLiquify() (#1365)
- swapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lpEarner,block.timestamp) (#1445-1452)
- feeAddr.transfer(address(this).balance.mul(20).div(100)) (#1408)
State variables written after the call(s):
- super._transfer(sender,recipient,amount) (#1371)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#892)
- _balances[recipient] = _balances[recipient].add(amount) (#893)
- super._transfer(sender,burnAddr,burnAmount) (#1384)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#892)
- _balances[recipient] = _balances[recipient].add(amount) (#893)
- super._transfer(sender,address(this),liqAmount) (#1385)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#892)
- _balances[recipient] = _balances[recipient].add(amount) (#893)
- super._transfer(sender,recipient,sendAmount) (#1386)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#892)
- _balances[recipient] = _balances[recipient].add(amount) (#893)
Apply the check-effects-interactions pattern.
Additional information: link
Unable to verify that contract auditor is trusted: Certik, Quantstamp, Hacken, Solidity, Paladinsec, Openzeppelin, Verichains
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 semi-renounced (passed to a contract)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#145-148)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#154-158)
name() should be declared external:
- BEP20.name() (#722-724)
decimals() should be declared external:
- BEP20.decimals() (#729-731)
symbol() should be declared external:
- BEP20.symbol() (#736-738)
maxSupply() should be declared external:
- BEP20.maxSupply() (#747-749)
transfer(address,uint256) should be declared external:
- BEP20.transfer(address,uint256) (#767-770)
allowance(address,address) should be declared external:
- BEP20.allowance(address,address) (#775-777)
approve(address,uint256) should be declared external:
- BEP20.approve(address,uint256) (#786-789)
transferFrom(address,address,uint256) should be declared external:
- BEP20.transferFrom(address,address,uint256) (#803-815)
increaseAllowance(address,uint256) should be declared external:
- BEP20.increaseAllowance(address,uint256) (#829-832)
decreaseAllowance(address,uint256) should be declared external:
- BEP20.decreaseAllowance(address,uint256) (#848-855)
mint(uint256) should be declared external:
- BEP20.mint(uint256) (#865-868)
mint(address,uint256) should be declared external:
- Lowcost.mint(address,uint256) (#1351-1353)
isExcludedFromAntiWhale(address) should be declared external:
- Lowcost.isExcludedFromAntiWhale(address) (#1465-1467)
updateTransferTaxRate(uint16) should be declared external:
- Lowcost.updateTransferTaxRate(uint16) (#1476-1480)
updateBurnFee(uint16) should be declared external:
- Lowcost.updateBurnFee(uint16) (#1486-1490)
updateMaxTransferAmountRate(uint16) should be declared external:
- Lowcost.updateMaxTransferAmountRate(uint16) (#1496-1501)
updateMinAmountToLiquify(uint256) should be declared external:
- Lowcost.updateMinAmountToLiquify(uint256) (#1507-1510)
setExcludedFromAntiWhale(address,bool) should be declared external:
- Lowcost.setExcludedFromAntiWhale(address,bool) (#1516-1519)
updateSwapAndLiquifyEnabled(bool) should be declared external:
- Lowcost.updateSwapAndLiquifyEnabled(bool) (#1525-1528)
updateSwapRouter(address) should be declared external:
- Lowcost.updateSwapRouter(address) (#1534-1540)
operator() should be declared external:
- Lowcost.operator() (#1562-1564)
transferOperator(address) should be declared external:
- Lowcost.transferOperator(address) (#1571-1575)
Use the external attribute for functions never called from the contract.
Additional information: link
Lowcost._transfer(address,address,uint256) (#1356-1388) performs a multiplication on the result of a division:
-taxAmount = amount.mul(transferTaxRate).div(10000) (#1375)
-burnAmount = taxAmount.mul(burnFee).div(100) (#1376)
Lowcost.swapAndLiquify() (#1391-1418) performs a multiplication on the result of a division:
-half = liquifyAmount.div(2) (#1401)
-otherHalf = liquifyAmount.sub(half.mul(80).div(100)) (#1402)
MasterChef.pendingLowcost(uint256,address) (#1853-1886) performs a multiplication on the result of a division:
-lowcostReward = multiplier.mul(LowcostPerSecond).mul(pool.allocPoint).div(totalAllocPoint) (#1870-1873)
-accLowcostPerShare = accLowcostPerShare.add(lowcostReward.mul(1e18).div(pool.lpSupply)) (#1881-1883)
MasterChef.updatePool(uint256) (#1897-1938) performs a multiplication on the result of a division:
-lowcostReward = multiplier.mul(LowcostPerSecond).mul(pool.allocPoint).div(totalAllocPoint) (#1910-1913)
-pool.accLowcostPerShare = pool.accLowcostPerShare.add(lowcostReward.mul(1e18).div(pool.lpSupply)) (#1932-1934)
Consider ordering multiplication before division.
Additional information: link
Reentrancy in MasterChef.add(uint256,IBEP20,uint16,bool) (#1781-1816):
External calls:
- massUpdatePools() (#1792)
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
State variables written after the call(s):
- poolExistence[_lpToken] = true (#1798)
- poolInfo.push(PoolInfo(_lpToken,_allocPoint,lastRewardSecond,0,_depositFeeBP,0)) (#1799-1808)
- totalAllocPoint = totalAllocPoint.add(_allocPoint) (#1797)
Reentrancy in MasterChef.deposit(uint256,uint256) (#1941-1975):
External calls:
- updatePool(_pid) (#1944)
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
- safeLowcostTransfer(msg.sender,pending) (#1952)
- transferSuccess = lowcost.transfer(_to,lowcostBal) (#2021)
- transferSuccess = lowcost.transfer(_to,_amount) (#2023)
- pool.lpToken.safeTransferFrom(address(msg.sender),address(this),_amount) (#1957-1961)
- pool.lpToken.safeTransfer(feeAddress,depositFee) (#1965)
State variables written after the call(s):
- pool.lpSupply = pool.lpSupply.add(_amount).sub(depositFee) (#1967)
- user.amount = user.amount.add(_amount).sub(depositFee) (#1966)
Reentrancy in MasterChef.deposit(uint256,uint256) (#1941-1975):
External calls:
- updatePool(_pid) (#1944)
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
- safeLowcostTransfer(msg.sender,pending) (#1952)
- transferSuccess = lowcost.transfer(_to,lowcostBal) (#2021)
- transferSuccess = lowcost.transfer(_to,_amount) (#2023)
- pool.lpToken.safeTransferFrom(address(msg.sender),address(this),_amount) (#1957-1961)
State variables written after the call(s):
- pool.lpSupply = pool.lpSupply.add(_amount) (#1970)
- user.amount = user.amount.add(_amount) (#1969)
Reentrancy in MasterChef.emergencyWithdraw(uint256) (#1999-2014):
External calls:
- pool.lpToken.safeTransfer(address(msg.sender),amount) (#2005)
State variables written after the call(s):
- pool.lpSupply = pool.lpSupply.sub(amount) (#2008)
- pool.lpSupply = 0 (#2010)
Reentrancy in MasterChef.set(uint256,uint256,uint16,bool) (#1819-1841):
External calls:
- massUpdatePools() (#1827)
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
State variables written after the call(s):
- poolInfo[_pid].allocPoint = _allocPoint (#1832)
- poolInfo[_pid].depositFeeBP = _depositFeeBP (#1833)
- totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint) (#1829-1831)
Reentrancy in MasterChef.updateEmissionRate(uint256) (#2044-2049):
External calls:
- massUpdatePools() (#2046)
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
State variables written after the call(s):
- LowcostPerSecond = _LowcostPerSecond (#2047)
Reentrancy in MasterChef.updatePool(uint256) (#1897-1938):
External calls:
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
State variables written after the call(s):
- pool.accLowcostPerShare = pool.accLowcostPerShare.add(lowcostReward.mul(1e18).div(pool.lpSupply)) (#1932-1934)
- pool.lastRewardSecond = block.timestamp (#1937)
Reentrancy in MasterChef.withdraw(uint256,uint256) (#1978-1996):
External calls:
- updatePool(_pid) (#1982)
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
- safeLowcostTransfer(msg.sender,pending) (#1987)
- transferSuccess = lowcost.transfer(_to,lowcostBal) (#2021)
- transferSuccess = lowcost.transfer(_to,_amount) (#2023)
State variables written after the call(s):
- user.amount = user.amount.sub(_amount) (#1990)
Reentrancy in MasterChef.withdraw(uint256,uint256) (#1978-1996):
External calls:
- updatePool(_pid) (#1982)
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
- safeLowcostTransfer(msg.sender,pending) (#1987)
- transferSuccess = lowcost.transfer(_to,lowcostBal) (#2021)
- transferSuccess = lowcost.transfer(_to,_amount) (#2023)
- pool.lpToken.safeTransfer(address(msg.sender),_amount) (#1991)
State variables written after the call(s):
- pool.lpSupply = pool.lpSupply.sub(_amount) (#1992)
- user.rewardDebt = user.amount.mul(pool.accLowcostPerShare).div(1e18) (#1994)
Apply the check-effects-interactions pattern.
Additional information: link
Lowcost.addLiquidity(uint256,uint256) (#1440-1453) ignores return value by swapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lpEarner,block.timestamp) (#1445-1452)
MasterChef.add(uint256,IBEP20,uint16,bool) (#1781-1816) ignores return value by _lpToken.balanceOf(address(this)) (#1788)
Ensure that all the return values of the function calls are used.
Additional information: link
BEP20.constructor(string,string).name (#706) shadows:
- BEP20.name() (#722-724) (function)
- IBEP20.name() (#181) (function)
BEP20.constructor(string,string).symbol (#706) shadows:
- BEP20.symbol() (#736-738) (function)
- IBEP20.symbol() (#176) (function)
BEP20.allowance(address,address).owner (#775) shadows:
- Ownable.owner() (#126-128) (function)
BEP20._approve(address,address,uint256).owner (#949) shadows:
- Ownable.owner() (#126-128) (function)
Lowcost.swapAndLiquify().maxTransferAmount (#1393) shadows:
- Lowcost.maxTransferAmount() (#1458-1460) (function)
Rename the local variables that shadow another component.
Additional information: link
MasterChef.constructor(Lowcost,address,address,uint256,uint256)._devaddr (#1758) lacks a zero-check on :
- devaddr = _devaddr (#1764)
MasterChef.constructor(Lowcost,address,address,uint256,uint256)._feeAddress (#1759) lacks a zero-check on :
- feeAddress = _feeAddress (#1765)
Check that the address is not zero.
Additional information: link
MasterChef.updatePool(uint256) (#1897-1938) has external calls inside a loop: totalRewards = lowcost.totalSupply().add(devReward).add(lowcostReward) (#1916-1918)
MasterChef.updatePool(uint256) (#1897-1938) has external calls inside a loop: totalRewards <= lowcost.maxSupply() (#1920)
MasterChef.updatePool(uint256) (#1897-1938) has external calls inside a loop: lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
MasterChef.updatePool(uint256) (#1897-1938) has external calls inside a loop: lowcost.mint(address(this),lowcostReward) (#1923)
MasterChef.updatePool(uint256) (#1897-1938) has external calls inside a loop: lowcostReward = lowcost.maxSupply().sub(lowcost.totalSupply()) (#1926)
MasterChef.updatePool(uint256) (#1897-1938) has external calls inside a loop: lowcost.mint(address(this),lowcostReward) (#1927)
Favor pull over push strategy for external calls.
Additional information: link
Reentrancy in Lowcost.swapAndLiquify() (#1391-1418):
External calls:
- swapTokensForEth(half) (#1405)
- swapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1430-1436)
- addLiquidity(otherHalf,newBalance) (#1414)
- swapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lpEarner,block.timestamp) (#1445-1452)
External calls sending eth:
- feeAddr.transfer(address(this).balance.mul(20).div(100)) (#1408)
- addLiquidity(otherHalf,newBalance) (#1414)
- swapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lpEarner,block.timestamp) (#1445-1452)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (#1414)
- _allowances[owner][spender] = amount (#956)
Apply the check-effects-interactions pattern.
Additional information: link
Reentrancy in Lowcost._transfer(address,address,uint256) (#1356-1388):
External calls:
- swapAndLiquify() (#1365)
- swapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lpEarner,block.timestamp) (#1445-1452)
- swapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1430-1436)
External calls sending eth:
- swapAndLiquify() (#1365)
- swapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lpEarner,block.timestamp) (#1445-1452)
- feeAddr.transfer(address(this).balance.mul(20).div(100)) (#1408)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (#894)
- super._transfer(sender,recipient,sendAmount) (#1386)
- Transfer(sender,recipient,amount) (#894)
- super._transfer(sender,burnAddr,burnAmount) (#1384)
- Transfer(sender,recipient,amount) (#894)
- super._transfer(sender,recipient,amount) (#1371)
- Transfer(sender,recipient,amount) (#894)
- super._transfer(sender,address(this),liqAmount) (#1385)
Reentrancy in MasterChef.add(uint256,IBEP20,uint16,bool) (#1781-1816):
External calls:
- massUpdatePools() (#1792)
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
Event emitted after the call(s):
- addPool(poolInfo.length - 1,address(_lpToken),_allocPoint,_depositFeeBP) (#1810-1815)
Reentrancy in MasterChef.deposit(uint256,uint256) (#1941-1975):
External calls:
- updatePool(_pid) (#1944)
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
- safeLowcostTransfer(msg.sender,pending) (#1952)
- transferSuccess = lowcost.transfer(_to,lowcostBal) (#2021)
- transferSuccess = lowcost.transfer(_to,_amount) (#2023)
- pool.lpToken.safeTransferFrom(address(msg.sender),address(this),_amount) (#1957-1961)
- pool.lpToken.safeTransfer(feeAddress,depositFee) (#1965)
Event emitted after the call(s):
- Deposit(msg.sender,_pid,_amount) (#1974)
Reentrancy in MasterChef.emergencyWithdraw(uint256) (#1999-2014):
External calls:
- pool.lpToken.safeTransfer(address(msg.sender),amount) (#2005)
Event emitted after the call(s):
- EmergencyWithdraw(msg.sender,_pid,amount) (#2013)
Reentrancy in MasterChef.set(uint256,uint256,uint16,bool) (#1819-1841):
External calls:
- massUpdatePools() (#1827)
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
Event emitted after the call(s):
- setPool(_pid,address(poolInfo[_pid].lpToken),_allocPoint,_depositFeeBP) (#1835-1840)
Reentrancy in Lowcost.swapAndLiquify() (#1391-1418):
External calls:
- swapTokensForEth(half) (#1405)
- swapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1430-1436)
- addLiquidity(otherHalf,newBalance) (#1414)
- swapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lpEarner,block.timestamp) (#1445-1452)
External calls sending eth:
- feeAddr.transfer(address(this).balance.mul(20).div(100)) (#1408)
- addLiquidity(otherHalf,newBalance) (#1414)
- swapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lpEarner,block.timestamp) (#1445-1452)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#957)
- addLiquidity(otherHalf,newBalance) (#1414)
- SwapAndLiquify(half,newBalance,otherHalf) (#1416)
Reentrancy in MasterChef.updateEmissionRate(uint256) (#2044-2049):
External calls:
- massUpdatePools() (#2046)
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
Event emitted after the call(s):
- UpdateEmissionRate(msg.sender,_LowcostPerSecond) (#2048)
Reentrancy in MasterChef.withdraw(uint256,uint256) (#1978-1996):
External calls:
- updatePool(_pid) (#1982)
- lowcost.mint(devaddr,lowcostReward.div(10)) (#1922)
- lowcost.mint(address(this),lowcostReward) (#1923)
- lowcost.mint(address(this),lowcostReward) (#1927)
- safeLowcostTransfer(msg.sender,pending) (#1987)
- transferSuccess = lowcost.transfer(_to,lowcostBal) (#2021)
- transferSuccess = lowcost.transfer(_to,_amount) (#2023)
- pool.lpToken.safeTransfer(address(msg.sender),_amount) (#1991)
Event emitted after the call(s):
- Withdraw(msg.sender,_pid,_amount) (#1995)
Apply the check-effects-interactions pattern.
Additional information: link
MasterChef.add(uint256,IBEP20,uint16,bool) (#1781-1816) uses timestamp for comparisons
Dangerous comparisons:
- block.timestamp > startTime (#1794-1796)
MasterChef.pendingLowcost(uint256,address) (#1853-1886) uses timestamp for comparisons
Dangerous comparisons:
- block.timestamp > pool.lastRewardSecond && pool.lpSupply != 0 && totalAllocPoint > 0 (#1862-1864)
- totalRewards > lowcost.maxSupply() (#1878)
MasterChef.massUpdatePools() (#1889-1894) uses timestamp for comparisons
Dangerous comparisons:
- pid < length (#1891)
MasterChef.updatePool(uint256) (#1897-1938) uses timestamp for comparisons
Dangerous comparisons:
- block.timestamp <= pool.lastRewardSecond (#1899)
- totalRewards <= lowcost.maxSupply() (#1920)
- lowcostReward != 0 (#1930)
MasterChef.updateStartTime(uint256) (#2052-2069) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp < startTime,cannot change start time if farm has already started) (#2053-2056)
- require(bool,string)(block.timestamp < _newStartTime,cannot set start time in the past) (#2057-2060)
Avoid relying on block.timestamp.
Additional information: link
Address.isContract(address) (#491-500) uses assembly
- INLINE ASM (#498)
Address._verifyCallResult(bool,bytes,string) (#636-653) uses assembly
- INLINE ASM (#645-648)
Do not use evm assembly.
Additional information: link
Lowcost._transfer(address,address,uint256) (#1356-1388) compares to a boolean constant:
-swapAndLiquifyEnabled == true && _inSwapAndLiquify == false && address(swapRouter) != address(0) && swapPair != address(0) && sender != swapPair && sender != owner() (#1359-1364)
Lowcost.antiWhale(address,address,uint256) (#1310-1320) compares to a boolean constant:
-_excludedFromAntiWhale[sender] == false && _excludedFromAntiWhale[recipient] == false (#1313-1314)
MasterChef.nonDuplicated(IBEP20) (#1775-1778) compares to a boolean constant:
-require(bool,string)(poolExistence[_lpToken] == false,nonDuplicated: duplicated) (#1776)
Remove the equality to the boolean constant.
Additional information: link
Address.functionCall(address,bytes) (#544-546) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#569-571) is never used and should be removed
Address.functionDelegateCall(address,bytes) (#618-620) is never used and should be removed
Address.functionDelegateCall(address,bytes,string) (#628-634) is never used and should be removed
Address.functionStaticCall(address,bytes) (#594-596) is never used and should be removed
Address.functionStaticCall(address,bytes,string) (#604-610) is never used and should be removed
Address.sendValue(address,uint256) (#518-524) is never used and should be removed
BEP20._burn(address,uint256) (#927-933) is never used and should be removed
BEP20._burnFrom(address,uint256) (#966-973) is never used and should be removed
Context._msgData() (#90-93) is never used and should be removed
SafeBEP20._callOptionalReturn(IBEP20,bytes) (#58-68) is never used and should be removed
SafeBEP20.safeApprove(IBEP20,address,uint256) (#31-40) is never used and should be removed
SafeBEP20.safeDecreaseAllowance(IBEP20,address,uint256) (#47-50) is never used and should be removed
SafeBEP20.safeIncreaseAllowance(IBEP20,address,uint256) (#42-45) is never used and should be removed
SafeBEP20.safeTransfer(IBEP20,address,uint256) (#16-18) is never used and should be removed
SafeBEP20.safeTransferFrom(IBEP20,address,address,uint256) (#20-22) is never used and should be removed
SafeERC20.safeApprove(IBEP20,address,uint256) (#1617-1631) is never used and should be removed
SafeERC20.safeDecreaseAllowance(IBEP20,address,uint256) (#1642-1652) is never used and should be removed
SafeERC20.safeIncreaseAllowance(IBEP20,address,uint256) (#1633-1640) is never used and should be removed
SafeMath.div(uint256,uint256,string) (#443-446) is never used and should be removed
SafeMath.mod(uint256,uint256) (#405-408) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#463-466) is never used and should be removed
SafeMath.tryAdd(uint256,uint256) (#277-281) is never used and should be removed
SafeMath.tryDiv(uint256,uint256) (#313-316) is never used and should be removed
SafeMath.tryMod(uint256,uint256) (#323-326) is never used and should be removed
SafeMath.tryMul(uint256,uint256) (#298-306) is never used and should be removed
SafeMath.trySub(uint256,uint256) (#288-291) is never used and should be removed
Remove unused functions.
Additional information: link
Lowcost.liqFee (#1248) is set pre-construction with a non-constant function or state variable:
- 100 - burnFee
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) (#518-524):
- (success) = recipient.call{value: amount}() (#522)
Low level call in Address.functionCallWithValue(address,bytes,uint256,string) (#579-586):
- (success,returndata) = target.call{value: value}(data) (#584)
Low level call in Address.functionStaticCall(address,bytes,string) (#604-610):
- (success,returndata) = target.staticcall(data) (#608)
Low level call in Address.functionDelegateCall(address,bytes,string) (#628-634):
- (success,returndata) = target.delegatecall(data) (#632)
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() (#978) is not in mixedCase
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#1126) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#1127) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#1144) is not in mixedCase
Parameter Lowcost.mint(address,uint256)._to (#1351) is not in mixedCase
Parameter Lowcost.mint(address,uint256)._amount (#1351) is not in mixedCase
Parameter Lowcost.isExcludedFromAntiWhale(address)._account (#1465) is not in mixedCase
Parameter Lowcost.updateTransferTaxRate(uint16)._transferTaxRate (#1476) is not in mixedCase
Parameter Lowcost.updateBurnFee(uint16)._burnFee (#1486) is not in mixedCase
Parameter Lowcost.updateMaxTransferAmountRate(uint16)._maxTransferAmountRate (#1496) is not in mixedCase
Parameter Lowcost.updateMinAmountToLiquify(uint256)._minAmount (#1507) is not in mixedCase
Parameter Lowcost.setExcludedFromAntiWhale(address,bool)._account (#1516) is not in mixedCase
Parameter Lowcost.setExcludedFromAntiWhale(address,bool)._excluded (#1516) is not in mixedCase
Parameter Lowcost.updateSwapAndLiquifyEnabled(bool)._enabled (#1525) is not in mixedCase
Parameter Lowcost.updateSwapRouter(address)._router (#1534) is not in mixedCase
Parameter Lowcost.setNoTaxSenderAddr(address,bool)._noTaxSenderAddr (#1547) is not in mixedCase
Parameter Lowcost.setNoTaxSenderAddr(address,bool)._value (#1547) is not in mixedCase
Parameter Lowcost.setNoTaxRecipientAddr(address,bool)._noTaxRecipientAddr (#1552) is not in mixedCase
Parameter Lowcost.setNoTaxRecipientAddr(address,bool)._value (#1552) is not in mixedCase
Constant Lowcost.maxTaxRate (#1251) is not in UPPER_CASE_WITH_UNDERSCORES
Constant Lowcost.feeAddr (#1254) is not in UPPER_CASE_WITH_UNDERSCORES
Constant Lowcost.burnAddr (#1257) is not in UPPER_CASE_WITH_UNDERSCORES
Constant Lowcost.lpEarner (#1290) is not in UPPER_CASE_WITH_UNDERSCORES
Event MasterChefaddPool(uint256,address,uint256,uint256) (#1742-1747) is not in CapWords
Event MasterChefsetPool(uint256,address,uint256,uint256) (#1748-1753) is not in CapWords
Parameter MasterChef.add(uint256,IBEP20,uint16,bool)._allocPoint (#1782) is not in mixedCase
Parameter MasterChef.add(uint256,IBEP20,uint16,bool)._lpToken (#1783) is not in mixedCase
Parameter MasterChef.add(uint256,IBEP20,uint16,bool)._depositFeeBP (#1784) is not in mixedCase
Parameter MasterChef.add(uint256,IBEP20,uint16,bool)._withUpdate (#1785) is not in mixedCase
Parameter MasterChef.set(uint256,uint256,uint16,bool)._pid (#1820) is not in mixedCase
Parameter MasterChef.set(uint256,uint256,uint16,bool)._allocPoint (#1821) is not in mixedCase
Parameter MasterChef.set(uint256,uint256,uint16,bool)._depositFeeBP (#1822) is not in mixedCase
Parameter MasterChef.set(uint256,uint256,uint16,bool)._withUpdate (#1823) is not in mixedCase
Parameter MasterChef.getMultiplier(uint256,uint256)._from (#1844) is not in mixedCase
Parameter MasterChef.getMultiplier(uint256,uint256)._to (#1844) is not in mixedCase
Parameter MasterChef.pendingLowcost(uint256,address)._pid (#1853) is not in mixedCase
Parameter MasterChef.pendingLowcost(uint256,address)._user (#1853) is not in mixedCase
Parameter MasterChef.updatePool(uint256)._pid (#1897) is not in mixedCase
Parameter MasterChef.deposit(uint256,uint256)._pid (#1941) is not in mixedCase
Parameter MasterChef.deposit(uint256,uint256)._amount (#1941) is not in mixedCase
Parameter MasterChef.withdraw(uint256,uint256)._pid (#1978) is not in mixedCase
Parameter MasterChef.withdraw(uint256,uint256)._amount (#1978) is not in mixedCase
Parameter MasterChef.emergencyWithdraw(uint256)._pid (#1999) is not in mixedCase
Parameter MasterChef.safeLowcostTransfer(address,uint256)._to (#2017) is not in mixedCase
Parameter MasterChef.safeLowcostTransfer(address,uint256)._amount (#2017) is not in mixedCase
Parameter MasterChef.setDevAddress(address)._devaddr (#2029) is not in mixedCase
Parameter MasterChef.setFeeAddress(address)._feeAddress (#2036) is not in mixedCase
Parameter MasterChef.updateEmissionRate(uint256)._LowcostPerSecond (#2044) is not in mixedCase
Parameter MasterChef.updateStartTime(uint256)._newStartTime (#2052) is not in mixedCase
Variable MasterChef.LowcostPerSecond (#1717) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
Redundant expression "this (#91)" inContext (#85-94)
Remove redundant statements if they congest code but offer no value.
Additional information: link
Reentrancy in Lowcost._transfer(address,address,uint256) (#1356-1388):
External calls:
- swapAndLiquify() (#1365)
- feeAddr.transfer(address(this).balance.mul(20).div(100)) (#1408)
External calls sending eth:
- swapAndLiquify() (#1365)
- swapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lpEarner,block.timestamp) (#1445-1452)
- feeAddr.transfer(address(this).balance.mul(20).div(100)) (#1408)
State variables written after the call(s):
- super._transfer(sender,recipient,amount) (#1371)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#892)
- _balances[recipient] = _balances[recipient].add(amount) (#893)
- super._transfer(sender,burnAddr,burnAmount) (#1384)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#892)
- _balances[recipient] = _balances[recipient].add(amount) (#893)
- super._transfer(sender,address(this),liqAmount) (#1385)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#892)
- _balances[recipient] = _balances[recipient].add(amount) (#893)
- super._transfer(sender,recipient,sendAmount) (#1386)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#892)
- _balances[recipient] = _balances[recipient].add(amount) (#893)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (#894)
- super._transfer(sender,recipient,sendAmount) (#1386)
- Transfer(sender,recipient,amount) (#894)
- super._transfer(sender,recipient,amount) (#1371)
- Transfer(sender,recipient,amount) (#894)
- super._transfer(sender,address(this),liqAmount) (#1385)
- Transfer(sender,recipient,amount) (#894)
- super._transfer(sender,burnAddr,burnAmount) (#1384)
Reentrancy in Lowcost.swapAndLiquify() (#1391-1418):
External calls:
- feeAddr.transfer(address(this).balance.mul(20).div(100)) (#1408)
External calls sending eth:
- feeAddr.transfer(address(this).balance.mul(20).div(100)) (#1408)
- addLiquidity(otherHalf,newBalance) (#1414)
- swapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lpEarner,block.timestamp) (#1445-1452)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (#1414)
- _allowances[owner][spender] = amount (#956)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#957)
- addLiquidity(otherHalf,newBalance) (#1414)
- SwapAndLiquify(half,newBalance,otherHalf) (#1416)
Apply the check-effects-interactions pattern.
Additional information: link
Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#983) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#984)
Prevent variables from having similar names.
Additional information: link
Lowcost.slitherConstructorConstantVariables() (#1239-1577) uses literals with too many digits:
- burnAddr = 0x000000000000000000000000000000000000dEaD (#1257)
Lowcost.slitherConstructorConstantVariables() (#1239-1577) uses literals with too many digits:
- lpEarner = 0x000000000000000000000000000000000000dEaD (#1290)
Use: Ether suffix, Time suffix, or The scientific notation
Additional information: link
BscScan page for the token does not contain additional info: website, socials, description, etc.
Additional information: link
Unable to find token on CoinGecko
Additional information: link
Unable to find token on CoinMarketCap
Additional information: link
Unable to find whitepaper link on the website
Unable to find token on CoinHunt
Additional information: link
Unable to find code repository for the project
Young tokens have high risks of scam / price dump / death
Alexa traffic rank is very low
Additional information: link
Young tokens have high risks of scam / price dump / death
Young tokens have high risks of scam / price dump / death
Token has no active CoinMarketCap listing / rank
Token has no active CoinGecko listing / rank
Telegram account has relatively few subscribers
Twitter account has relatively few followers
Unable to find Blog account (Reddit or Medium)
Unable to find Youtube account
Unable to find Discord account