VIDT [VIDT Datalink] Token

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VIDT.validateNFT(uint256,bytes,bool) (#400-431) uses delegatecall to a input-controlled function id
- (nft_created,nft_data) = _nftContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#416)
VIDT.validateNFT(uint256,bytes,bool) (#400-431) uses delegatecall to a input-controlled function id
- (nft_created,nft_data) = _nftdContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#414)
VIDT.validateFile(address,uint256,bytes,bool,bool,bool) (#325-375) uses delegatecall to a input-controlled function id
- (nft_created,nft_data) = _nftContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#353)
Avoid using delegatecall. Use only trusted destinations.

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VIDT.mainWallet (#142) shadows:
- Ownable.mainWallet (#52)
Remove the state variable shadowing.

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VIDT.transferToken(address,uint256) (#197-199) ignores return value by BEP20(tokenAddress).transfer(owner(),tokens) (#198)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

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Contract ownership is not renounced (belongs to a wallet)

Reentrancy in VIDT.validateFile(address,uint256,bytes,bool,bool,bool) (#325-375):
External calls:
- (nft_created,nft_data) = _nftContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#353)
State variables written after the call(s):
- fileHashes[fileHash].nft = nftID (#359)
Reentrancy in VIDT.validateNFT(uint256,bytes,bool) (#400-431):
External calls:
- (nft_created,nft_data) = _nftdContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#414)
- (nft_created,nft_data) = _nftContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#416)
State variables written after the call(s):
- fileHashes[fileHash].nft = nftID (#423)
Apply the check-effects-interactions pattern.

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Reentrancy in VIDT.validateNFT(uint256,bytes,bool) (#400-431):
External calls:
- (nft_created,nft_data) = _nftdContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#414)
- (nft_created,nft_data) = _nftContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#416)
Event emitted after the call(s):
- Transfer(msg.sender,_validationWallet,Payment) (#428)
- ValidateFile(index,fileHash,nftID) (#429)
Reentrancy in VIDT.validateFile(address,uint256,bytes,bool,bool,bool) (#325-375):
External calls:
- (nft_created,nft_data) = _nftContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#353)
Event emitted after the call(s):
- Transfer(msg.sender,To,Payment) (#373)
- ValidateFile(index,fileHash,nftID) (#370)
Apply the check-effects-interactions pattern.

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VIDT.verifyFile(string) (#453-476) uses assembly
- INLINE ASM (#474)
Do not use evm assembly.

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VIDT.mainWallet (#142) is never used in VIDT (#115-595)
Remove unused state variables.

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VIDT.setContracts(address,address).nftContract (#540) shadows:
- VIDT.nftContract() (#581-583) (function)
VIDT._approve(address,address,uint256).owner (#276) shadows:
- Ownable.owner() (#62-64) (function)
VIDT.allowance(address,address).owner (#201) shadows:
- Ownable.owner() (#62-64) (function)
VIDT.setContracts(address,address).nftdContract (#540) shadows:
- VIDT.nftdContract() (#585-587) (function)
Rename the local variables that shadow another component.

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VIDT.setPrice(uint256) (#528-530) should emit an event for:
- _validationPrice = newPrice (#529)
VIDT.setFee(uint256) (#532-534) should emit an event for:
- _validationFee = newFee (#533)
Emit an event for critical parameter changes.

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VIDT.withdraw(address)._ownerAddress (#565) lacks a zero-check on :
- _ownerAddress.transfer(address(this).balance) (#566)
VIDT.setWallet(address).newWallet (#536) lacks a zero-check on :
- _validationWallet = newWallet (#537)
VIDT.setContracts(address,address).nftdContract (#540) lacks a zero-check on :
- _nftdContract = nftdContract (#542)
VIDT.setContracts(address,address).nftContract (#540) lacks a zero-check on :
- _nftContract = nftContract (#541)
Check that the address is not zero.

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Reentrancy in VIDT.validateFile(address,uint256,bytes,bool,bool,bool) (#325-375):
External calls:
- (nft_created,nft_data) = _nftContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#353)
State variables written after the call(s):
- _allowances[To][msg.sender] = _allowances[To][msg.sender].sub(Payment) (#363)
- _balances[msg.sender] = _balances[msg.sender].sub(Payment) (#365)
- _balances[To] = _balances[To].add(Payment) (#366)
- verifiedNFTs[nftID] = fileHash (#358)
Reentrancy in VIDT.validateNFT(uint256,bytes,bool) (#400-431):
External calls:
- (nft_created,nft_data) = _nftdContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#414)
- (nft_created,nft_data) = _nftContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#416)
State variables written after the call(s):
- _balances[msg.sender] = _balances[msg.sender].sub(Payment) (#425)
- _balances[_validationWallet] = _balances[_validationWallet].add(Payment) (#426)
- verifiedNFTs[nftID] = fileHash (#422)
Apply the check-effects-interactions pattern.

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SafeBEP20.safeTransfer(BEP20,address,uint256) (#110-112) is never used and should be removed
Remove unused functions.

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solc-0.6.8 is not recommended for deployment
Pragma version0.6.8 (#2) allows old versions
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 VIDT.verifyFile(string) (#453-476):
- (heritage_call,heritage_data) = oldContract.staticcall(abi.encodeWithSignature(verifyFile(string),fileHash)) (#472)
Low level call in VIDT.validateFile(address,uint256,bytes,bool,bool,bool) (#325-375):
- (nft_created,nft_data) = _nftContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#353)
Low level call in VIDT.validateNFT(uint256,bytes,bool) (#400-431):
- (nft_created,nft_data) = _nftdContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#414)
- (nft_created,nft_data) = _nftContract.delegatecall(abi.encodeWithSignature(createNFT(bytes),Data)) (#416)
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 VIDT.token_number (#137) is not in mixedCase
Parameter VIDT.verifyPublisher(address)._publisher (#478) is not in mixedCase
Parameter VIDT.validateNFT(uint256,bytes,bool).Data (#400) is not in mixedCase
Parameter VIDT.setPublic(bool)._public (#545) is not in mixedCase
Parameter VIDT.validatePublisher(address,bool,string).Address (#305) is not in mixedCase
Parameter VIDT.validateNFT(uint256,bytes,bool).Payment (#400) is not in mixedCase
Parameter VIDT.batchTransferByOwner(address[],uint256[])._addresses (#293) is not in mixedCase
Parameter VIDT.validateWallet(address,bool,string).Wallet (#311) is not in mixedCase
Parameter VIDT.validatePublisher(address,bool,string).State (#305) is not in mixedCase
Parameter VIDT.validatePublisher(address,bool,string).Publisher (#305) is not in mixedCase
Parameter VIDT.validateFile(address,uint256,bytes,bool,bool,bool).To (#325) is not in mixedCase
Parameter VIDT.validateFile(address,uint256,bytes,bool,bool,bool).Payment (#325) is not in mixedCase
Parameter VIDT.memoryValidateFile(uint256,bytes).Payment (#377) is not in mixedCase
Parameter SafeBEP20.safeTransfer(BEP20,address,uint256)._token (#110) is not in mixedCase
Parameter VIDT.memoryValidateFile(uint256,bytes).Data (#377) is not in mixedCase
Parameter VIDT.frozenAccount(address)._account (#486) is not in mixedCase
Parameter VIDT.validateFile(address,uint256,bytes,bool,bool,bool).Data (#325) is not in mixedCase
Parameter SafeBEP20.safeTransfer(BEP20,address,uint256)._value (#110) is not in mixedCase
Parameter VIDT.transferByOwner(address,uint256)._to (#284) is not in mixedCase
Parameter VIDT.transferByOwner(address,uint256)._value (#284) is not in mixedCase
Parameter VIDT.validateWallet(address,bool,string).State (#311) is not in mixedCase
Parameter VIDT.simpleValidateFile(uint256).Payment (#433) is not in mixedCase
Parameter VIDT.validateWallet(address,bool,string).Address (#311) is not in mixedCase
Struct VIDT.fStruct (#127) is not in CapWords
Parameter VIDT.freeze(address,bool)._state (#245) is not in mixedCase
Parameter VIDT.validateFile(address,uint256,bytes,bool,bool,bool).NFT (#325) is not in mixedCase
Parameter VIDT.covertValidateFile(uint256).Payment (#444) is not in mixedCase
Parameter VIDT.withdraw(address)._ownerAddress (#565) is not in mixedCase
Parameter VIDT.freeze(address,bool)._address (#245) is not in mixedCase
Parameter VIDT.batchTransferByOwner(address[],uint256[])._amounts (#293) is not in mixedCase
Parameter SafeBEP20.safeTransfer(BEP20,address,uint256)._to (#110) is not in mixedCase
Parameter VIDT.verifyWallet(address)._wallet (#482) is not in mixedCase
Constant VIDT.initialSupply (#147) is not in UPPER_CASE_WITH_UNDERSCORES
Follow the Solidity naming convention.

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Variable VIDT._nftContract (#144) is too similar to VIDT.setContracts(address,address).nftdContract (#540)
Prevent variables from having similar names.

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VIDT.slitherConstructorConstantVariables() (#115-595) uses literals with too many digits:
- initialSupply = 100000000 (#147)
Use: Ether suffix, Time suffix, or The scientific notation

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VIDT.token_number (#137) should be constant
VIDT.mainWallet (#142) should be constant
Ownable.mainWallet (#52) should be constant
VIDT.oldContract (#143) should be constant
VIDT.unused (#136) should be constant
Add the constant attributes to state variables that never change.

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validatePublisher(address,bool,string) should be declared external:
- VIDT.validatePublisher(address,bool,string) (#305-309)
nameChange(string) should be declared external:
- VIDT.nameChange(string) (#177-179)
nftdContract() should be declared external:
- VIDT.nftdContract() (#585-587)
nftContract() should be declared external:
- VIDT.nftContract() (#581-583)
setFee(uint256) should be declared external:
- VIDT.setFee(uint256) (#532-534)
validationWallet() should be declared external:
- VIDT.validationWallet() (#577-579)
setWallet(address) should be declared external:
- VIDT.setWallet(address) (#536-538)
batchTransferByOwner(address[],uint256[]) should be declared external:
- VIDT.batchTransferByOwner(address[],uint256[]) (#293-303)
setContracts(address,address) should be declared external:
- VIDT.setContracts(address,address) (#540-543)
burn(uint256) should be declared external:
- VIDT.burn(uint256) (#241-243)
setPublic(bool) should be declared external:
- VIDT.setPublic(bool) (#545-547)
decreaseApproval(address,uint256) should be declared external:
- VIDT.decreaseApproval(address,uint256) (#236-239)
pause() should be declared external:
- Pausable.pause() (#98-101)
verifyNFT(uint256) should be declared external:
- VIDT.verifyNFT(uint256) (#524-526)
verifyWallet(address) should be declared external:
- VIDT.verifyWallet(address) (#482-484)
setPrice(uint256) should be declared external:
- VIDT.setPrice(uint256) (#528-530)
increaseApproval(address,uint256) should be declared external:
- VIDT.increaseApproval(address,uint256) (#226-229)
verifyFile(string) should be declared external:
- VIDT.verifyFile(string) (#453-476)
freeze(address,bool) should be declared external:
- VIDT.freeze(address,bool) (#245-249)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#71-73)
validationFee() should be declared external:
- VIDT.validationFee() (#573-575)
unpause() should be declared external:
- Pausable.unpause() (#103-106)
verifyFileNFT(string) should be declared external:
- VIDT.verifyFileNFT(string) (#507-522)
decreaseAllowance(address,uint256) should be declared external:
- VIDT.decreaseAllowance(address,uint256) (#231-234)
validateWallet(address,bool,string) should be declared external:
- VIDT.validateWallet(address,bool,string) (#311-315)
transferByOwner(address,uint256) should be declared external:
- VIDT.transferByOwner(address,uint256) (#284-291)
frozenAccount(address) should be declared external:
- VIDT.frozenAccount(address) (#486-488)
increaseAllowance(address,uint256) should be declared external:
- VIDT.increaseAllowance(address,uint256) (#221-224)
validationPrice() should be declared external:
- VIDT.validationPrice() (#569-571)
burnFrom(address,uint256) should be declared external:
- VIDT.burnFrom(address,uint256) (#251-255)
verify(string) should be declared external:
- VIDT.verify(string) (#490-505)
verifyPublisher(address) should be declared external:
- VIDT.verifyPublisher(address) (#478-480)
Use the external attribute for functions never called from the contract.

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