BSCLauncher Token & Presale Platform - Smart Contract Audit Report
Summary
BSCLauncher is building a launchpad for projects on the Binance Smart Chain to launch in a safe, trusted, and decentralized manner.
Notes on the Token Contract:The initial supply of the token is 10 million with 2 million locked tokens. The locked tokens will be released to the team as follows: 50k any time, 500k after 30 days, 700k after 150 days, 750k after 270 days. At the time of deployment all tokens are delivered to the deployer's address. There is no way for more tokens to be minted after deployment. A small amount of gas can be saved via marking functions external instead of public. The contract utilizes SafeMath to prevent overflow issues.
Notes on the Factory & Presale Campaign Contracts:The Factory contract exists to deploy Presale Campaign contracts. The BSCLauncher team can call the createCampaign() function to generate a presale, passing in variables around the presale duration, cost, liquidity lock time & percentage, etc. The caller can elect to have unsold tokens burned or returned to them. Teams setting up presales can set the presale to be public or only for whitelisted addresses. Additionally, teams can also set a mid-sale date, where only whitelisted participants will be able to participate in the first portion, and everyone can participate in the second portion. In order to participate in a presale, users must have at least an amount of BSCLauncher tokens as defined by the team setting up the presale. This value can be 0 if the team setting up the presale so chooses. While the sale is active, users can deposit BNB to purchase tokens in a presale. Tokens purchased in presales are immediately sent to the buyer. After liquidity has been added, the presale team can withdraw the BNB raised as well as leftover unsold tokens. The length of a liquidity lock is set by the team running the presale. The BSCLauncher team retains the power to cancel any presale campaign at any time. The team running the presale can also end the sale early if they so choose. In case a presale fails or is not successful, users can withdraw their contributed BNB; though they must return their purchased tokens to do so. At the conclusion of the sale, the BSCLauncher team (via the FeeVault contract) will receive a fee in BNB for hosting the presale. The FeeVault contract splits BNB received as fees among two addresses controlled by the team. The contracts utilize SafeMath to prevent overflow issues. Proper structuring of logic around BNB transfers to prevent reentrancy issues. Public functions may be declared external to save a small amount of gas on each transaction.
Audit Findings Summary:
- No security issues from outside attackers were identified.
- As with any presale, ensure trust in the team prior to investing.
- KYC: No.
- Date: March 31st, 2021.
External Threats
| Vulnerability Category | Notes | Result |
|---|---|---|
| Arbitrary Storage Write | N/A | PASS |
| Arbitrary Jump | N/A | PASS |
| Delegate Call to Untrusted Contract | N/A | PASS |
| Dependence on Predictable Variables | N/A | PASS |
| Deprecated Opcodes | N/A | PASS |
| Ether Thief | N/A | PASS |
| Exceptions | N/A | PASS |
| External Calls | N/A | PASS |
| Integer Over/Underflow | N/A | PASS |
| Multiple Sends | N/A | PASS |
| Suicide | N/A | PASS |
| State Change External Calls | N/A | Pass |
| Unchecked Retval | N/A | PASS |
| User Supplied Assertion | N/A | PASS |
| Critical Solidity Compiler | N/A | PASS |
| Overall Contract Safety | PASS |
Details - BSCLauncher Token Contract
($) = payable function
# = non-constant function
Int = Internal
Ext = External
Pub = Public
+ Context
- [Int] _msgSender
- [Int] _msgData
+ Ownable (Context)
- [Int] #
- [Pub] owner
- [Pub] renounceOwnership #
- modifiers: onlyOwner
- [Pub] transferOwnership #
- modifiers: onlyOwner
+ [Int] IERC20
- [Ext] totalSupply
- [Ext] balanceOf
- [Ext] transfer #
- [Ext] allowance
- [Ext] approve #
- [Ext] transferFrom #
+ [Lib] SafeMath
- [Int] tryAdd
- [Int] trySub
- [Int] tryMul
- [Int] tryDiv
- [Int] tryMod
- [Int] add
- [Int] sub
- [Int] mul
- [Int] div
- [Int] mod
- [Int] sub
- [Int] div
- [Int] mod
+ ERC20 (Context, IERC20)
- [Pub] #
- [Pub] name
- [Pub] symbol
- [Pub] decimals
- [Pub] totalSupply
- [Pub] balanceOf
- [Pub] transfer #
- [Pub] allowance
- [Pub] approve #
- [Pub] transferFrom #
- [Pub] increaseAllowance #
- [Pub] decreaseAllowance #
- [Int] _transfer #
- [Int] _mint #
- [Int] _burn #
- [Int] _approve #
- [Int] _setupDecimals #
- [Int] _beforeTokenTransfer #
+ ERC20Burnable (Context, ERC20)
- [Pub] burn #
- [Pub] burnFrom #
+ [Lib] Address
- [Int] isContract
- [Int] sendValue #
- [Int] functionCall #
- [Int] functionCall #
- [Int] functionCallWithValue #
- [Int] functionCallWithValue #
- [Int] functionStaticCall
- [Int] functionStaticCall
- [Int] functionDelegateCall #
- [Int] functionDelegateCall #
- [Prv] _verifyCallResult
+ [Lib] SafeERC20
- [Int] safeTransfer #
- [Int] safeTransferFrom #
- [Int] safeApprove #
- [Int] safeIncreaseAllowance #
- [Int] safeDecreaseAllowance #
- [Prv] _callOptionalReturn #
+ BscLauncherToken (ERC20, ERC20Burnable, Ownable)
- [Pub] #
- modifiers: ERC20
- [Pub] unlockTeamAllocation #
- modifiers: onlyOwner
- [Pub] getTeamAllocationUnlockDate
Details - Presale Factory
($) = payable function
# = non-constant function
Int = Internal
Ext = External
Pub = Public
+ Context
- [Int] _msgSender
- [Int] _msgData
+ Ownable (Context)
- [Int] #
- [Pub] owner
- [Pub] renounceOwnership #
- modifiers: onlyOwner
- [Pub] transferOwnership #
- modifiers: onlyOwner
+ [Lib] SafeMath
- [Int] tryAdd
- [Int] trySub
- [Int] tryMul
- [Int] tryDiv
- [Int] tryMod
- [Int] add
- [Int] sub
- [Int] mul
- [Int] div
- [Int] mod
- [Int] sub
- [Int] div
- [Int] mod
+ [Int] IERC20
- [Ext] totalSupply
- [Ext] balanceOf
- [Ext] transfer #
- [Ext] allowance
- [Ext] approve #
- [Ext] transferFrom #
+ ERC20 (Context, IERC20)
- [Pub] #
- [Pub] name
- [Pub] symbol
- [Pub] decimals
- [Pub] totalSupply
- [Pub] balanceOf
- [Pub] transfer #
- [Pub] allowance
- [Pub] approve #
- [Pub] transferFrom #
- [Pub] increaseAllowance #
- [Pub] decreaseAllowance #
- [Int] _transfer #
- [Int] _mint #
- [Int] _burn #
- [Int] _approve #
- [Int] _setupDecimals #
- [Int] _beforeTokenTransfer #
+ [Lib] Address
- [Int] isContract
- [Int] sendValue #
- [Int] functionCall #
- [Int] functionCall #
- [Int] functionCallWithValue #
- [Int] functionCallWithValue #
- [Int] functionStaticCall
- [Int] functionStaticCall
- [Int] functionDelegateCall #
- [Int] functionDelegateCall #
- [Prv] _verifyCallResult
+ [Lib] SafeERC20
- [Int] safeTransfer #
- [Int] safeTransferFrom #
- [Int] safeApprove #
- [Int] safeIncreaseAllowance #
- [Int] safeDecreaseAllowance #
- [Prv] _callOptionalReturn #
+ [Int] IFactoryGetters
- [Ext] getLpRouter
- [Ext] getFeeAddress
- [Ext] getLauncherToken
+ [Int] IUniswapV2Router02
- [Ext] addLiquidityETH ($)
+ Campaign
- [Pub] #
- [Ext] initialize #
- [Ext] fundIn #
- modifiers: onlyCampaignOwner
- [Ext] fundOut #
- modifiers: onlyCampaignOwner
- [Pub] buyTokens ($)
- [Pub] finishUp #
- [Pub] withdrawLP #
- modifiers: onlyCampaignOwner
- [Pub] refund #
- [Pub] getReturnTokenAmt
- [Pub] appendWhitelisted #
- modifiers: onlyCampaignOwner
- [Pub] removeWhitelisted #
- modifiers: onlyCampaignOwner
- [Pub] checkWhiteList
- [Int] sendAllTokensTo #
- [Int] getFeeAmt
- [Int] getFeeAddress
- [Pub] failedOrCancelled
- [Pub] isLive
- [Pub] calculateTokenAmount
- [Pub] getRemaining
- [Pub] setCancelled #
- modifiers: onlyFactory
- [Pub] getCampaignFundInTokensRequired
- [Pub] checkQualifyingTokens
+ Factory (IFactoryGetters, Ownable)
- [Pub] #
- modifiers: Ownable
- [Pub] createCampaign #
- modifiers: onlyOwner
- [Ext] cancelCampaign #
- modifiers: onlyOwner
- [Ext] getLpRouter
- [Ext] getFeeAddress
- [Ext] getLauncherToken
Details - Presale Campaign
($) = payable function
# = non-constant function
Int = Internal
Ext = External
Pub = Public
+ Context
- [Int] _msgSender
- [Int] _msgData
+ [Int] IERC20
- [Ext] totalSupply
- [Ext] balanceOf
- [Ext] transfer #
- [Ext] allowance
- [Ext] approve #
- [Ext] transferFrom #
+ [Lib] SafeMath
- [Int] tryAdd
- [Int] trySub
- [Int] tryMul
- [Int] tryDiv
- [Int] tryMod
- [Int] add
- [Int] sub
- [Int] mul
- [Int] div
- [Int] mod
- [Int] sub
- [Int] div
- [Int] mod
+ ERC20 (Context, IERC20)
- [Pub] #
- [Pub] name
- [Pub] symbol
- [Pub] decimals
- [Pub] totalSupply
- [Pub] balanceOf
- [Pub] transfer #
- [Pub] allowance
- [Pub] approve #
- [Pub] transferFrom #
- [Pub] increaseAllowance #
- [Pub] decreaseAllowance #
- [Int] _transfer #
- [Int] _mint #
- [Int] _burn #
- [Int] _approve #
- [Int] _setupDecimals #
- [Int] _beforeTokenTransfer #
+ [Lib] Address
- [Int] isContract
- [Int] sendValue #
- [Int] functionCall #
- [Int] functionCall #
- [Int] functionCallWithValue #
- [Int] functionCallWithValue #
- [Int] functionStaticCall
- [Int] functionStaticCall
- [Int] functionDelegateCall #
- [Int] functionDelegateCall #
- [Prv] _verifyCallResult
+ [Lib] SafeERC20
- [Int] safeTransfer #
- [Int] safeTransferFrom #
- [Int] safeApprove #
- [Int] safeIncreaseAllowance #
- [Int] safeDecreaseAllowance #
- [Prv] _callOptionalReturn #
+ [Int] IFactoryGetters
- [Ext] getLpRouter
- [Ext] getFeeAddress
- [Ext] getLauncherToken
+ [Int] IUniswapV2Router02
- [Ext] addLiquidityETH ($)
+ Campaign
- [Pub] #
- [Ext] initialize #
- [Ext] fundIn #
- modifiers: onlyCampaignOwner
- [Ext] fundOut #
- modifiers: onlyCampaignOwner
- [Pub] buyTokens ($)
- [Pub] finishUp #
- [Pub] withdrawLP #
- modifiers: onlyCampaignOwner
- [Pub] refund #
- [Pub] getReturnTokenAmt
- [Pub] appendWhitelisted #
- modifiers: onlyCampaignOwner
- [Pub] removeWhitelisted #
- modifiers: onlyCampaignOwner
- [Pub] checkWhiteList
- [Int] sendAllTokensTo #
- [Int] getFeeAmt
- [Int] getFeeAddress
- [Pub] failedOrCancelled
- [Pub] isLive
- [Pub] calculateTokenAmount
- [Pub] getRemaining
- [Pub] setCancelled #
- modifiers: onlyFactory
- [Pub] getCampaignFundInTokensRequired
- [Pub] checkQualifyingTokens
Details - FeeVault
($) = payable function
# = non-constant function
Int = Internal
Ext = External
Pub = Public
+ [Lib] SafeMath
- [Int] tryAdd
- [Int] trySub
- [Int] tryMul
- [Int] tryDiv
- [Int] tryMod
- [Int] add
- [Int] sub
- [Int] mul
- [Int] div
- [Int] mod
- [Int] sub
- [Int] div
- [Int] mod
+ FeeVault
- [Pub] #
- [Ext] ($)