TRAVEL [Travel Care] Token

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

Reentrancy in TravelCare._transfer(address,address,uint256) (#1113-1157):
External calls:
- swapAndLiquify(contractTokenBalance) (#1144)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1205-1212)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1191-1197)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#1144)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1205-1212)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (#1156)
- _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity) (#1052)
- _rOwned[_marketingWalletAddress] = _rOwned[_marketingWalletAddress].add(rMarketing) (#1060)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1248)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1238)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1271)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1260)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1239)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1250)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1261)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1273)
- _tokenTransfer(from,to,amount,takeFee) (#1156)
- _rTotal = _rTotal.sub(rFee) (#1005)
- _tokenTransfer(from,to,amount,takeFee) (#1156)
- _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity) (#1054)
- _tOwned[_marketingWalletAddress] = _tOwned[_marketingWalletAddress].add(tMarketing) (#1062)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#1270)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#1259)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#1249)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#1272)
Apply the check-effects-interactions pattern.

Additional information: link

TravelCare.addLiquidity(uint256,uint256) (#1200-1213) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1205-1212)
Ensure that all the return values of the function calls are used.

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TravelCare._approve(address,address,uint256).owner (#1105) shadows:
- Ownable.owner() (#532-534) (function)
Rename the local variables that shadow another component.

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TravelCare.setMaxTxPercent(uint256) (#990-994) should emit an event for:
- _maxTxAmount = _tTotal.mul(maxTxPercent).div(10 ** 2) (#991-993)
Emit an event for critical parameter changes.

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Reentrancy in TravelCare.transferFrom(address,address,uint256) (#898-902):
External calls:
- _transfer(sender,recipient,amount) (#899)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1205-1212)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1191-1197)
External calls sending eth:
- _transfer(sender,recipient,amount) (#899)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1205-1212)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#900)
- _allowances[owner][spender] = amount (#1109)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in TravelCare.transferFrom(address,address,uint256) (#898-902):
External calls:
- _transfer(sender,recipient,amount) (#899)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1205-1212)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1191-1197)
External calls sending eth:
- _transfer(sender,recipient,amount) (#899)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1205-1212)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1110)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#900)
Apply the check-effects-interactions pattern.

Additional information: link

Ownable.unlock() (#579-584) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp > _lockTime,Contract is locked until 7 days) (#581)
Avoid relying on block.timestamp.

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Address._verifyCallResult(bool,bytes,string) (#481-498) uses assembly
- INLINE ASM (#490-493)
Do not use evm assembly.

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SafeMath.trySub(uint256,uint256) (#108-113) is never used and should be removed
Remove unused functions.

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TravelCare._previousLiquidityFee (#820) 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.

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solc-0.8.3 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.

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Low level call in Address.functionDelegateCall(address,bytes,string) (#473-479):
- (success,returndata) = target.delegatecall(data) (#477)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

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Variable TravelCare._maxTxAmount (#828) is not in mixedCase
Follow the Solidity naming convention.

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Redundant expression "this (#310)" inContext (#304-313)
Remove redundant statements if they congest code but offer no value.

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Variable TravelCare._getRValues(uint256,uint256,uint256,uint256,uint256).rTransferAmount (#1028) is too similar to TravelCare._transferBothExcluded(address,address,uint256).tTransferAmount (#1269)
Prevent variables from having similar names.

Additional information: link

TravelCare.slitherConstructorVariables() (#789-1280) uses literals with too many digits:
- numTokensSellToAddToLiquidity = 10000000000 * 10 ** 9 (#829)
Use: Ether suffix, Time suffix, or The scientific notation

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TravelCare.numTokensSellToAddToLiquidity (#829) should be constant
Add the constant attributes to state variables that never change.

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isExcludedFromFee(address) should be declared external:
- TravelCare.isExcludedFromFee(address) (#1101-1103)
Use the external attribute for functions never called from the contract.

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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.

BscScan page for the token does not contain additional info: website, socials, description, etc.

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Token was delisted from CoinGecko

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Unable to find token contract audit

Unable to verify token contract address on the website

Unable to find audit link on the website

Unable to find whitepaper link on the website

Token has no active CoinGecko listing / rank

Token has a considerable age, but social accounts / website are missing or have few users

Token has a considerable age, but average PancakeSwap 30d trading volume is low

Alexa traffic rank is relatively low

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Young tokens have high risks of price dump / death

Young tokens have high risks of price dump / death