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TRAVEL [Travel Care] Token

About TRAVEL

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Token 16 months
CoinMarketCap 15 months
white paper

Travel Care is the protocol that unites the world of traveling and cryptocurrencies.
At Travel Care we will offer unique products and experiences for traveling. These experiences can only and exclusively be acquired with our $TRAVEL token.
We are negotiating agreements with many suppliers (Hotels, Airlines, Venues, Carriers ...)

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Laser Scorebeta Last Audit: 30 November 2021

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Token is either risky or in presale. For presale 30+ is a fine score.

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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.

Additional information: link

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

Additional information: link

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.

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)
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.

Additional information: link

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

Additional information: link

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

Additional information: link

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.

Additional information: link

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.

Additional information: link

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

Additional information: link

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

Additional information: link

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

Additional information: link

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

Additional information: link

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

Additional information: link

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

Additional information: link

Holders:


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.


Twitter account link seems to be invalid


Unable to find Blog account (Reddit or Medium)


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

Additional information: link


Token was delisted from CoinGecko

Additional information: link


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

Additional information: link


Young tokens have high risks of price dump / death


Young tokens have high risks of price dump / death

Price for TRAVEL