SPARK [MetaSpark] Token

MetaSpark.swapBackInBnb() (#1219-1277) sends eth to arbitrary user
Dangerous calls:
- (marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
- (communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
MetaSpark.addLiquidity(uint256,uint256) (#1396-1408) sends eth to arbitrary user
Dangerous calls:
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Too many vulnerabilities (Unchecked transfer, Reentrancy vulnerability, etc.). High risk of a scam. DYOR & manual audit are advised.

Reentrancy in MetaSpark._transferFrom(address,address,uint256) (#1009-1055):
External calls:
- swapBackInBnb() (#1021)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1250-1253)
- dividendDistributor.deposit(swappedTokensAmount) (#1254)
- (marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
- (communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
- swapBackInTokens() (#1023)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1298-1301)
- IERC20(SWAPTOKEN).transfer(marketingDevFeeReceiver,marketingDevToken) (#1328)
- dividendDistributor.deposit(swappedTokensAmount) (#1302)
- IERC20(SWAPTOKEN).transfer(communityFeeReceiver,communityToken) (#1333)
External calls sending eth:
- swapBackInBnb() (#1021)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- (marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
- (communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
- swapBackInTokens() (#1023)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
State variables written after the call(s):
- _balances[sender] = _balances[sender].sub(amount,Insufficient Balance) (#1028-1031)
- _balances[recipient] = _balances[recipient].add(amountReceived) (#1036)
- amountReceived = takeFee(sender,amount,recipient) (#1033-1035)
- _balances[DEAD] = _balances[DEAD].add(burnFee) (#1087)
- _balances[DEAD] = _balances[DEAD].add(burnFee) (#1095)
- _balances[address(this)] = _balances[address(this)].add(feesToContract) (#1100)
Apply the check-effects-interactions pattern.

Additional information: link

DividendDistributor.purge(address) (#653-656) ignores return value by REWARD.transfer(receiver,balance) (#655)
DividendDistributor.distributeDividend(address) (#725-742) ignores return value by REWARD.transfer(shareholder,amount) (#733)
MetaSpark.swapBackInBnb() (#1219-1277) ignores return value by IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1250-1253)
MetaSpark.swapBackInTokens() (#1279-1310) ignores return value by IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1298-1301)
MetaSpark.swapAndSendFees(uint256) (#1312-1336) ignores return value by IERC20(SWAPTOKEN).transfer(marketingDevFeeReceiver,marketingDevToken) (#1328)
MetaSpark.swapAndSendFees(uint256) (#1312-1336) ignores return value by IERC20(SWAPTOKEN).transfer(communityFeeReceiver,communityToken) (#1333)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link

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.

Combination 2: Unchecked transfer + 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.

Combination 3: Reentrancy vulnerabilities + Unchecked transfer vulnerability. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.

Contract ownership is not renounced (belongs to a wallet)

Contract locking ether found:
Contract DividendDistributor (#590-822) has payable functions:
- DividendDistributor.receive() (#643)
But does not have a function to withdraw the ether
Remove the payable attribute or add a withdraw function.

Additional information: link

MetaSpark.swapBackInBnb().marketingDevSuccess (#1257) is written in both
(marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
marketingDevSuccess = false (#1261)
MetaSpark.swapBackInBnb().communitySuccess (#1265) is written in both
(communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
communitySuccess = false (#1270)
Fix or remove the writes.

Additional information: link

Unable to verify that contract auditor is trusted: Certik, Quantstamp, Hacken, Solidity, Paladinsec, Openzeppelin, Verichains

MetaSpark.addLiquidity(uint256,uint256) (#1396-1408) ignores return value by router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
Ensure that all the return values of the function calls are used.

Additional information: link

MetaSpark.slitherConstructorVariables() (#824-1472) uses literals with too many digits:
- DEAD = 0x000000000000000000000000000000000000dEaD (#828)
MetaSpark.slitherConstructorVariables() (#824-1472) uses literals with too many digits:
- ZERO = 0x0000000000000000000000000000000000000000 (#829)
MetaSpark.slitherConstructorVariables() (#824-1472) uses literals with too many digits:
- _totalSupply = 1000000000 * (10 ** _decimals) (#838)
MetaSpark.slitherConstructorVariables() (#824-1472) uses literals with too many digits:
- distributorGas = 500000 (#868)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

MetaSpark.ZERO (#829) is never used in MetaSpark (#824-1472)
Remove unused state variables.

Additional information: link

DividendDistributor.WBNB (#602) should be constant
DividendDistributor.dividendsPerShareAccuracyFactor (#615) should be constant
MetaSpark.DEAD (#828) should be constant
MetaSpark.WBNB (#827) should be constant
MetaSpark.ZERO (#829) should be constant
MetaSpark._totalSupply (#838) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#399-401)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#407-410)
getHolderDetails(address) should be declared external:
- DividendDistributor.getHolderDetails(address) (#769-783)
name() should be declared external:
- MetaSpark.name() (#911-913)
symbol() should be declared external:
- MetaSpark.symbol() (#915-917)
decimals() should be declared external:
- MetaSpark.decimals() (#919-921)
balanceOf(address) should be declared external:
- MetaSpark.balanceOf(address) (#923-925)
getHolderDetails(address) should be declared external:
- MetaSpark.getHolderDetails(address) (#928-939)
getLastProcessedIndex() should be declared external:
- MetaSpark.getLastProcessedIndex() (#941-943)
getNumberOfTokenHolders() should be declared external:
- MetaSpark.getNumberOfTokenHolders() (#945-947)
totalDistributedRewards() should be declared external:
- MetaSpark.totalDistributedRewards() (#949-951)
updateBuyFees(uint256,uint256,uint256,uint256,uint256) should be declared external:
- MetaSpark.updateBuyFees(uint256,uint256,uint256,uint256,uint256) (#1123-1137)
updateSellFees(uint256,uint256,uint256,uint256,uint256) should be declared external:
- MetaSpark.updateSellFees(uint256,uint256,uint256,uint256,uint256) (#1139-1153)
whitelistPreSale(address) should be declared external:
- MetaSpark.whitelistPreSale(address) (#1155-1158)
purgeBeforeSwitch() should be declared external:
- MetaSpark.purgeBeforeSwitch() (#1161-1163)
includeMyRewards() should be declared external:
- MetaSpark.includeMyRewards() (#1165-1175)
switchToken(address,bool) should be declared external:
- MetaSpark.switchToken(address,bool) (#1178-1204)
___claimRewards(bool) should be declared external:
- MetaSpark.___claimRewards(bool) (#1207-1212)
claimProcess() should be declared external:
- MetaSpark.claimProcess() (#1215-1217)
isExcludedFromFee(address) should be declared external:
- MetaSpark.isExcludedFromFee(address) (#1455-1457)
isExcludedFromDividends(address) should be declared external:
- MetaSpark.isExcludedFromDividends(address) (#1459-1461)
Use the external attribute for functions never called from the contract.

Additional information: link

Low level call in MetaSpark.swapBackInBnb() (#1219-1277):
- (marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
- (communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

MetaSpark.takeFee(address,uint256,address) (#1075-1104) performs a multiplication on the result of a division:
-feeAmount = amount.mul(sellTotalFees).div(100) (#1083)
-burnFee = feeAmount.mul(buyBurnFee).div(buyTotalFees) (#1094)
MetaSpark.takeFee(address,uint256,address) (#1075-1104) performs a multiplication on the result of a division:
-feeAmount = amount.mul(sellTotalFees).div(100) (#1083)
-burnFee = feeAmount.mul(sellBurnFee).div(sellTotalFees) (#1086)
Consider ordering multiplication before division.

Additional information: link

Reentrancy in DividendDistributor.distributeDividend(address) (#725-742):
External calls:
- REWARD.transfer(shareholder,amount) (#733)
State variables written after the call(s):
- shares[shareholder].totalRealised = shares[shareholder].totalRealised.add(amount) (#735-737)
- shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount) (#738-740)
Reentrancy in DividendDistributor.process(uint256) (#687-713):
External calls:
- distributeDividend(shareholders[currentIndex]) (#705)
- REWARD.transfer(shareholder,amount) (#733)
State variables written after the call(s):
- currentIndex ++ (#710)
Reentrancy in MetaSpark.setRouterAddress(address) (#1463-1470):
External calls:
- pair = IUniswapV2Factory(router.factory()).createPair(WBNB,address(this)) (#1465-1468)
State variables written after the call(s):
- router = _newPancakeRouter (#1469)
Reentrancy in DividendDistributor.setShare(address,uint256) (#658-678):
External calls:
- distributeDividend(shareholder) (#664)
- REWARD.transfer(shareholder,amount) (#733)
State variables written after the call(s):
- shares[shareholder].amount = amount (#674)
- shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount) (#675-677)
Apply the check-effects-interactions pattern.

Additional information: link

MetaSpark._approve(address,address,uint256).owner (#973) shadows:
- Ownable.owner() (#380-382) (function)
Rename the local variables that shadow another component.

Additional information: link

DividendDistributor.setDistributionCriteria(uint256,uint256) (#645-651) should emit an event for:
- minPeriod = _minPeriod (#649)
- minDistribution = _minDistribution (#650)
DividendDistributor.deposit(uint256) (#680-685) should emit an event for:
- dividendsPerShare = dividendsPerShare.add(dividendsPerShareAccuracyFactor.mul(amount).div(totalShares)) (#682-684)
MetaSpark.updateBuyFees(uint256,uint256,uint256,uint256,uint256) (#1123-1137) should emit an event for:
- buyDividendRewardsFee = reward (#1130)
- buyMarketingDevFee = marketingdev (#1131)
- buyLiquidityFee = liquidity (#1132)
- buyCommunityFee = community (#1133)
- buyBurnFee = burn (#1134)
- buyTotalFees = reward.add(marketingdev).add(liquidity).add(community).add(burn) (#1135)
MetaSpark.updateSellFees(uint256,uint256,uint256,uint256,uint256) (#1139-1153) should emit an event for:
- sellBurnFee = burn (#1150)
- sellTotalFees = reward.add(marketingdev).add(liquidity).add(community).add(burn) (#1151)
MetaSpark.setDistributorSettings(uint256) (#1450-1453) should emit an event for:
- distributorGas = gas (#1452)
Emit an event for critical parameter changes.

Additional information: link

MetaSpark.changeSwapToken(address).token (#1119) lacks a zero-check on :
- SWAPTOKEN = token (#1120)
MetaSpark.setFeeReceivers(address,address)._marketingDevFeeReceiver (#1427) lacks a zero-check on :
- marketingDevFeeReceiver = _marketingDevFeeReceiver (#1428)
MetaSpark.setFeeReceivers(address,address)._communityFeeReceiver (#1427) lacks a zero-check on :
- communityFeeReceiver = _communityFeeReceiver (#1429)
Check that the address is not zero.

Additional information: link

DividendDistributor.distributeDividend(address) (#725-742) has external calls inside a loop: REWARD.transfer(shareholder,amount) (#733)
MetaSpark.switchToken(address,bool) (#1178-1204) has external calls inside a loop: dividendDistributor.setShare(currentHolders[i],_balances[currentHolders[i]]) (#1194-1199)
Favor pull over push strategy for external calls.

Additional information: link

Reentrancy in MetaSpark.constructor() (#884-903):
External calls:
- pair = IUniswapV2Factory(router.factory()).createPair(WBNB,address(this)) (#886-889)
State variables written after the call(s):
- _allowances[address(this)][address(router)] = type()(uint256).max (#891)
- _balances[msg.sender] = _totalSupply (#901)
- dividendDistributor = new DividendDistributor(address(router),REWARD) (#893)
- isDividendExempt[pair] = true (#897)
- isDividendExempt[address(this)] = true (#898)
- isDividendExempt[DEAD] = true (#899)
- isFeeExempt[msg.sender] = true (#895)
Reentrancy in DividendDistributor.distributeDividend(address) (#725-742):
External calls:
- REWARD.transfer(shareholder,amount) (#733)
State variables written after the call(s):
- shareholderClaims[shareholder] = block.timestamp (#734)
Reentrancy in DividendDistributor.setShare(address,uint256) (#658-678):
External calls:
- distributeDividend(shareholder) (#664)
- REWARD.transfer(shareholder,amount) (#733)
State variables written after the call(s):
- addShareholder(shareholder) (#668)
- shareholderIndexes[shareholder] = shareholders.length (#809)
- removeShareholder(shareholder) (#670)
- shareholderIndexes[shareholders[shareholders.length - 1]] = shareholderIndexes[shareholder] (#817-819)
- addShareholder(shareholder) (#668)
- shareholders.push(shareholder) (#810)
- removeShareholder(shareholder) (#670)
- shareholders[shareholderIndexes[shareholder]] = shareholders[shareholders.length - 1] (#814-816)
- shareholders.pop() (#820)
- totalShares = totalShares.sub(shares[shareholder].amount).add(amount) (#673)
Reentrancy in MetaSpark.swapAndLiquify(uint256) (#1338-1359):
External calls:
- swapTokensForEth(half) (#1350)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- addLiquidity(otherHalf,newBalance) (#1356)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1356)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (#1356)
- _allowances[owner][spender] = amount (#980)
Reentrancy in MetaSpark.swapAndSendFees(uint256) (#1312-1336):
External calls:
- swapTokensForTokens(tokensForFee,SWAPTOKEN) (#1315)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
State variables written after the call(s):
- _approve(address(this),marketingDevFeeReceiver,marketingDevToken) (#1327)
- _allowances[owner][spender] = amount (#980)
Reentrancy in MetaSpark.swapAndSendFees(uint256) (#1312-1336):
External calls:
- swapTokensForTokens(tokensForFee,SWAPTOKEN) (#1315)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(SWAPTOKEN).transfer(marketingDevFeeReceiver,marketingDevToken) (#1328)
State variables written after the call(s):
- _approve(address(this),communityFeeReceiver,communityToken) (#1332)
- _allowances[owner][spender] = amount (#980)
Reentrancy in MetaSpark.swapBackInBnb() (#1219-1277):
External calls:
- swapTokensForEth(tokensToSwap) (#1233)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- swapTokensForTokens(tokensToReward,REWARD) (#1244)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
State variables written after the call(s):
- swapTokensForTokens(tokensToReward,REWARD) (#1244)
- _allowances[owner][spender] = amount (#980)
Reentrancy in MetaSpark.swapBackInBnb() (#1219-1277):
External calls:
- swapTokensForEth(tokensToSwap) (#1233)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- swapTokensForTokens(tokensToReward,REWARD) (#1244)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1250-1253)
- dividendDistributor.deposit(swappedTokensAmount) (#1254)
- (marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
- (communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
- swapAndLiquify(tokensToLiquidity) (#1275)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
External calls sending eth:
- (marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
- (communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
- swapAndLiquify(tokensToLiquidity) (#1275)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
State variables written after the call(s):
- swapAndLiquify(tokensToLiquidity) (#1275)
- _allowances[owner][spender] = amount (#980)
Reentrancy in MetaSpark.swapBackInTokens() (#1279-1310):
External calls:
- swapTokensForTokens(rewardTokens,REWARD) (#1292)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1298-1301)
- dividendDistributor.deposit(swappedTokensAmount) (#1302)
- swapAndLiquify(liquidityTokens) (#1305)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
External calls sending eth:
- swapAndLiquify(liquidityTokens) (#1305)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
State variables written after the call(s):
- swapAndLiquify(liquidityTokens) (#1305)
- _allowances[owner][spender] = amount (#980)
Reentrancy in MetaSpark.swapBackInTokens() (#1279-1310):
External calls:
- swapTokensForTokens(rewardTokens,REWARD) (#1292)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1298-1301)
- dividendDistributor.deposit(swappedTokensAmount) (#1302)
- swapAndLiquify(liquidityTokens) (#1305)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- swapAndSendFees(tokensForFee) (#1308)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(SWAPTOKEN).transfer(marketingDevFeeReceiver,marketingDevToken) (#1328)
- IERC20(SWAPTOKEN).transfer(communityFeeReceiver,communityToken) (#1333)
External calls sending eth:
- swapAndLiquify(liquidityTokens) (#1305)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
State variables written after the call(s):
- swapAndSendFees(tokensForFee) (#1308)
- _allowances[owner][spender] = amount (#980)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in MetaSpark._transferFrom(address,address,uint256) (#1009-1055):
External calls:
- swapBackInBnb() (#1021)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1250-1253)
- dividendDistributor.deposit(swappedTokensAmount) (#1254)
- (marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
- (communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
- swapBackInTokens() (#1023)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1298-1301)
- IERC20(SWAPTOKEN).transfer(marketingDevFeeReceiver,marketingDevToken) (#1328)
- dividendDistributor.deposit(swappedTokensAmount) (#1302)
- IERC20(SWAPTOKEN).transfer(communityFeeReceiver,communityToken) (#1333)
- dividendDistributor.setShare(sender,_balances[sender]) (#1040-1042)
- dividendDistributor.setShare(recipient,_balances[recipient]) (#1046-1048)
- dividendDistributor.process(distributorGas) (#1051)
External calls sending eth:
- swapBackInBnb() (#1021)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- (marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
- (communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
- swapBackInTokens() (#1023)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
Event emitted after the call(s):
- Transfer(sender,recipient,amountReceived) (#1053)
Reentrancy in MetaSpark._transferFrom(address,address,uint256) (#1009-1055):
External calls:
- swapBackInBnb() (#1021)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1250-1253)
- dividendDistributor.deposit(swappedTokensAmount) (#1254)
- (marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
- (communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
- swapBackInTokens() (#1023)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1298-1301)
- IERC20(SWAPTOKEN).transfer(marketingDevFeeReceiver,marketingDevToken) (#1328)
- dividendDistributor.deposit(swappedTokensAmount) (#1302)
- IERC20(SWAPTOKEN).transfer(communityFeeReceiver,communityToken) (#1333)
External calls sending eth:
- swapBackInBnb() (#1021)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- (marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
- (communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
- swapBackInTokens() (#1023)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
Event emitted after the call(s):
- Transfer(sender,DEAD,burnFee) (#1088)
- amountReceived = takeFee(sender,amount,recipient) (#1033-1035)
- Transfer(sender,DEAD,burnFee) (#1096)
- amountReceived = takeFee(sender,amount,recipient) (#1033-1035)
- Transfer(sender,address(this),feesToContract) (#1101)
- amountReceived = takeFee(sender,amount,recipient) (#1033-1035)
Reentrancy in MetaSpark.constructor() (#884-903):
External calls:
- pair = IUniswapV2Factory(router.factory()).createPair(WBNB,address(this)) (#886-889)
Event emitted after the call(s):
- Transfer(address(0),msg.sender,_totalSupply) (#902)
Reentrancy in MetaSpark.includeMyRewards() (#1165-1175):
External calls:
- dividendDistributor.setShare(msg.sender,_balances[msg.sender]) (#1170-1172)
Event emitted after the call(s):
- IncludeInReward(msg.sender) (#1174)
Reentrancy in MetaSpark.swapAndLiquify(uint256) (#1338-1359):
External calls:
- swapTokensForEth(half) (#1350)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- addLiquidity(otherHalf,newBalance) (#1356)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1356)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#981)
- addLiquidity(otherHalf,newBalance) (#1356)
- AutoLiquify(newBalance,otherHalf) (#1358)
Reentrancy in MetaSpark.swapAndSendFees(uint256) (#1312-1336):
External calls:
- swapTokensForTokens(tokensForFee,SWAPTOKEN) (#1315)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#981)
- _approve(address(this),marketingDevFeeReceiver,marketingDevToken) (#1327)
Reentrancy in MetaSpark.swapAndSendFees(uint256) (#1312-1336):
External calls:
- swapTokensForTokens(tokensForFee,SWAPTOKEN) (#1315)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(SWAPTOKEN).transfer(marketingDevFeeReceiver,marketingDevToken) (#1328)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#981)
- _approve(address(this),communityFeeReceiver,communityToken) (#1332)
- SendFeesInToken(marketingDevFeeReceiver,marketingDevToken) (#1329)
Reentrancy in MetaSpark.swapAndSendFees(uint256) (#1312-1336):
External calls:
- swapTokensForTokens(tokensForFee,SWAPTOKEN) (#1315)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(SWAPTOKEN).transfer(marketingDevFeeReceiver,marketingDevToken) (#1328)
- IERC20(SWAPTOKEN).transfer(communityFeeReceiver,communityToken) (#1333)
Event emitted after the call(s):
- SendFeesInToken(communityFeeReceiver,communityToken) (#1334)
Reentrancy in MetaSpark.swapBackInBnb() (#1219-1277):
External calls:
- swapTokensForEth(tokensToSwap) (#1233)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- swapTokensForTokens(tokensToReward,REWARD) (#1244)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#981)
- swapTokensForTokens(tokensToReward,REWARD) (#1244)
Reentrancy in MetaSpark.swapBackInBnb() (#1219-1277):
External calls:
- swapTokensForEth(tokensToSwap) (#1233)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- swapTokensForTokens(tokensToReward,REWARD) (#1244)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1250-1253)
- dividendDistributor.deposit(swappedTokensAmount) (#1254)
- (marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
- (communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
- swapAndLiquify(tokensToLiquidity) (#1275)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
External calls sending eth:
- (marketingDevSuccess) = address(marketingDevFeeReceiver).call{gas: 30000,value: marketingDevFeeBnb}() (#1257-1260)
- (communitySuccess) = address(communityFeeReceiver).call{gas: 30000,value: communityFeeBnb}() (#1265-1268)
- swapAndLiquify(tokensToLiquidity) (#1275)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#981)
- swapAndLiquify(tokensToLiquidity) (#1275)
- AutoLiquify(newBalance,otherHalf) (#1358)
- swapAndLiquify(tokensToLiquidity) (#1275)
Reentrancy in MetaSpark.swapBackInTokens() (#1279-1310):
External calls:
- swapTokensForTokens(rewardTokens,REWARD) (#1292)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1298-1301)
- dividendDistributor.deposit(swappedTokensAmount) (#1302)
- swapAndLiquify(liquidityTokens) (#1305)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
External calls sending eth:
- swapAndLiquify(liquidityTokens) (#1305)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#981)
- swapAndLiquify(liquidityTokens) (#1305)
- AutoLiquify(newBalance,otherHalf) (#1358)
- swapAndLiquify(liquidityTokens) (#1305)
Reentrancy in MetaSpark.swapBackInTokens() (#1279-1310):
External calls:
- swapTokensForTokens(rewardTokens,REWARD) (#1292)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(REWARD).transfer(address(dividendDistributor),swappedTokensAmount) (#1298-1301)
- dividendDistributor.deposit(swappedTokensAmount) (#1302)
- swapAndLiquify(liquidityTokens) (#1305)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1368-1374)
- swapAndSendFees(tokensForFee) (#1308)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1387-1393)
- IERC20(SWAPTOKEN).transfer(marketingDevFeeReceiver,marketingDevToken) (#1328)
- IERC20(SWAPTOKEN).transfer(communityFeeReceiver,communityToken) (#1333)
External calls sending eth:
- swapAndLiquify(liquidityTokens) (#1305)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp) (#1400-1407)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#981)
- swapAndSendFees(tokensForFee) (#1308)
- SendFeesInToken(marketingDevFeeReceiver,marketingDevToken) (#1329)
- swapAndSendFees(tokensForFee) (#1308)
- SendFeesInToken(communityFeeReceiver,communityToken) (#1334)
- swapAndSendFees(tokensForFee) (#1308)
Apply the check-effects-interactions pattern.

Additional information: link

DividendDistributor.shouldDistribute(address) (#715-723) uses timestamp for comparisons
Dangerous comparisons:
- shareholderClaims[shareholder] + minPeriod < block.timestamp && getUnpaidEarnings(shareholder) > minDistribution (#720-722)
Avoid relying on block.timestamp.

Additional information: link

DividendDistributor.process(uint256) (#687-713) has costly operations inside a loop:
- currentIndex = 0 (#701)
DividendDistributor.distributeDividend(address) (#725-742) has costly operations inside a loop:
- totalDistributed = totalDistributed.add(amount) (#732)
DividendDistributor.process(uint256) (#687-713) has costly operations inside a loop:
- currentIndex ++ (#710)
Use a local variable to hold the loop computation result.

Additional information: link

Context._msgData() (#348-350) is never used and should be removed
SafeMath.div(uint256,uint256,string) (#296-305) is never used and should be removed
SafeMath.mod(uint256,uint256) (#256-258) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#322-331) is never used and should be removed
SafeMath.tryAdd(uint256,uint256) (#127-133) is never used and should be removed
SafeMath.tryDiv(uint256,uint256) (#169-174) is never used and should be removed
SafeMath.tryMod(uint256,uint256) (#181-186) is never used and should be removed
SafeMath.tryMul(uint256,uint256) (#152-162) is never used and should be removed
SafeMath.trySub(uint256,uint256) (#140-145) is never used and should be removed
Remove unused functions.

Additional information: link

MetaSpark.swapThreshold (#876) is set pre-construction with a non-constant function or state variable:
- (_totalSupply * 10) / 10000
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

Function IUniswapV2Router01.WETH() (#442) is not in mixedCase
Parameter DividendDistributor.setDistributionCriteria(uint256,uint256)._minPeriod (#646) is not in mixedCase
Parameter DividendDistributor.setDistributionCriteria(uint256,uint256)._minDistribution (#647) is not in mixedCase
Variable DividendDistributor._token (#593) is not in mixedCase
Variable DividendDistributor.REWARD (#601) is not in mixedCase
Variable DividendDistributor.WBNB (#602) is not in mixedCase
Parameter MetaSpark.whitelistPreSale(address)._preSale (#1155) is not in mixedCase
Function MetaSpark.___claimRewards(bool) (#1207-1212) is not in mixedCase
Parameter MetaSpark.setFeeReceivers(address,address)._marketingDevFeeReceiver (#1427) is not in mixedCase
Parameter MetaSpark.setFeeReceivers(address,address)._communityFeeReceiver (#1427) is not in mixedCase
Parameter MetaSpark.setSwapBackSettings(bool,uint256)._enabled (#1432) is not in mixedCase
Parameter MetaSpark.setSwapBackSettings(bool,uint256)._amount (#1432) is not in mixedCase
Parameter MetaSpark.setDistributionCriteria(uint256,uint256)._minPeriod (#1441) is not in mixedCase
Parameter MetaSpark.setDistributionCriteria(uint256,uint256)._minDistribution (#1442) is not in mixedCase
Variable MetaSpark.WBNB (#827) is not in mixedCase
Variable MetaSpark.DEAD (#828) is not in mixedCase
Variable MetaSpark.ZERO (#829) is not in mixedCase
Variable MetaSpark.SWAPTOKEN (#831) is not in mixedCase
Variable MetaSpark.REWARD (#832) is not in mixedCase
Constant MetaSpark._name (#834) is not in UPPER_CASE_WITH_UNDERSCORES
Constant MetaSpark._symbol (#835) is not in UPPER_CASE_WITH_UNDERSCORES
Constant MetaSpark._decimals (#836) is not in UPPER_CASE_WITH_UNDERSCORES
Variable MetaSpark._totalSupply (#838) is not in mixedCase
Variable MetaSpark._balances (#840) is not in mixedCase
Variable MetaSpark._allowances (#841) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#447) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#448)
Prevent variables from having similar names.

Additional information: link

Contract has 9% buy tax and 15% sell tax.
Taxes are suspiciously high (over 10%) and contract ownership is not renounced. Token has a high risk of becoming a honeypot.

Average 30d number of PancakeSwap swaps is low.

Number of Binance Smart Chain (BSC) token holders is low.

Token is deployed only at one blockchain

Token has only one trading pair

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 audit link on the website

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

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank

Young tokens have high risks of price dump / death

Young tokens have high risks of price dump / death