# Haidamo

# Smart Contract Audit Report

## Audit Summary

Haidamo is building new LP token vesting contracts.

For this audit, we reviewed the TokenVestingBase, LPCapitalization, and PriceOracle contracts provided to us by the project team.

## Audit Findings

Please ensure trust in the team prior to investing as they have some control in the ecosystem.

Date: March 17th, 2022.

Updated: April 8th, 2022 to address changes made by the team.## Finding #1 - LPCapitalization - Medium (Resolved)

Description:In the calculatePayout() function, the $DAMO reward amount is calculated based on using the inherited getReserves() function and Uniswap liquidity pools to determine the value of the deposited LP tokens in $DAMO.Risk/Impact:Anyone can use flash loans to manipulate the ratio of the reward token to $DAI liquidity pair, thereby greatly increasing the determined value of LP tokens deposited in the contract. The new inflated value would automatically set the user's reward to an inflated amount.Recommendation:The team should implement a Time Weighted Average Price (TWAP) or utilize Chainlink to mitigate potential price manipulations.Resolution:The team has implemented a TWAP using a Uniswap oracle in order to determine the value of the LP tokens as recommended above.## Finding #2 - Haidamo - Informational

Description:Several functions are declared public, but are never called internally.`TokenVestingBase.createVestingSchedule, TokenVestingBase.revoke, TokenVestingBase.withdraw, TokenVestingBase.computeReleasableAmount, TokenVestingBase.computeLatestVestingScheduleIdForHolder, TokenVestingBase.getLastVestingScheduleForHolder`

Recommendation:We recommend declaring these functions external for additional gas savings on each call.

## Contracts Overview

TokenVestingBase Contract:

- As the contracts are implemented with Solidity v0.8.X, they are protected from any underflow/overflow attacks.
- The team must exercise caution when designating reward tokens and must avoid fee-on-transfer tokens (unless the proper exemptions are made).
LPCapitalization Contract:

- This contract enables users to claim their vested reward tokens until rewards are depleted or their rewards are revoked.
- Reward token vesting begins once the specified start time of the vesting entry has been reached; however, reward tokens are not claimable until the vesting entry's cliff period has elapsed as well as a full reward interval period.
- The cliff period is a specified duration of time after the start time in which the user cannot claim their reward tokens.
- The rate at which the reward tokens vest is dependent on the vesting entry's total duration and amount.
- Users can claim vested rewards as long as their vesting amount has not been revoked; When a users' vesting token amount is revoked, any vested tokens are transferred to the vesting entry's owner while unvested tokens are forfeited.
- The owner can transfer ownership of the contract at any time.
- The owner can revoke any users' vesting tokens at any time unless the vesting entry is irrevocable.
- The owner can only withdraw reward tokens from the contract that exceed the total amount required for rewards.
- ReentrancyGuard is utilized within the release() function to prevent re-entrancy attacks.

- This contract enables users to deposit a designated LP token in exchange for vesting reward tokens until the contract's maximum deposit limit is reached; the vesting properties are stored within the vestingContractAddress contract address.
- The TokenVestingBase contract is intended to be used as the vestingContractAddress.
- The vesting start time is set as the current time, the reward interval is one second, and the total duration is set to 3 days.
- There is no cliff period set so users' can claim rewards from the TokenVestingBase contract at any time as long as a full reward interval has elapsed.
- Users' rewards are based on the reserve amount of both tokens in the liquidity pair, $DAMO value of the deposited LP tokens, and bonus percentage.
- The $DAMO value of the deposited LP tokens is calculated based on a Time Weighted Average Price (TWAP) for $DAMO tokens from the PriceOracle contract and the amount of $DAMO tokens that would be returned from liquidating the deposited LP tokens and swapping the $DAI token asset for the $DAMO token asset.
- The vesting reward entries from this contract cannot be revoked within the TokenVestingBase contract.
- The owner can transfer ownership of the contract at any time.
- The owner can update the liquidity pair address at any time.
- The owner can change the bonus percentage at any time.
- The owner can update the maximum total deposit limit at any time.

## Audit Results

Vulnerability Category | Notes | Result |
---|---|---|

Arbitrary Jump/Storage Write | N/A | PASS |

Centralization of Control | N/A | PASS |

Compiler Issues | N/A | PASS |

Delegate Call to Untrusted Contract | N/A | PASS |

Dependence on Predictable Variables | N/A | PASS |

Ether/Token Theft | N/A | PASS |

Flash Loans | N/A | PASS |

Front Running | N/A | PASS |

Improper Events | N/A | PASS |

Improper Authorization Scheme | N/A | PASS |

Integer Over/Underflow | N/A | PASS |

Logical Issues | N/A | PASS |

Oracle Issues | N/A | PASS |

Outdated Compiler Version | N/A | PASS |

Race Conditions | N/A | PASS |

Reentrancy | N/A | PASS |

Signature Issues | N/A | PASS |

Unbounded Loops | N/A | PASS |

Unused Code | N/A | PASS |

Overall Contract Safety | PASS |

# LPCapitalization Contract

```
($) = payable function
# = non-constant function
Int = Internal
Ext = External
Pub = Public
+ [Int] IERC20
- [Ext] totalSupply
- [Ext] balanceOf
- [Ext] transfer #
- [Ext] allowance
- [Ext] approve #
- [Ext] transferFrom #
+ [Int] IERC20Metadata (IERC20)
- [Ext] name
- [Ext] symbol
- [Ext] decimals
+ Context
- [Int] _msgSender
- [Int] _msgData
+ ERC20 (Context, IERC20, IERC20Metadata)
- [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] _spendAllowance #
- [Int] _beforeTokenTransfer #
- [Int] _afterTokenTransfer #
+ Ownable (Context)
- [Pub] #
- [Pub] owner
- [Pub] renounceOwnership #
- modifiers: onlyOwner
- [Pub] transferOwnership #
- modifiers: onlyOwner
- [Int] _transferOwnership #
+ [Int] IUniswapV2Pair
- [Ext] name
- [Ext] symbol
- [Ext] decimals
- [Ext] totalSupply
- [Ext] balanceOf
- [Ext] allowance
- [Ext] approve #
- [Ext] transfer #
- [Ext] transferFrom #
- [Ext] DOMAIN_SEPARATOR
- [Ext] PERMIT_TYPEHASH
- [Ext] nonces
- [Ext] permit #
- [Ext] MINIMUM_LIQUIDITY
- [Ext] factory
- [Ext] token0
- [Ext] token1
- [Ext] getReserves
- [Ext] price0CumulativeLast
- [Ext] price1CumulativeLast
- [Ext] kLast
- [Ext] mint #
- [Ext] burn #
- [Ext] swap #
- [Ext] skim #
- [Ext] sync #
- [Ext] initialize #
+ [Lib] UniswapV2Library
- [Int] sortTokens
- [Int] pairFor
- [Int] getReserves
- [Int] quote
- [Int] getAmountOut
- [Int] getAmountIn
- [Int] getAmountsOut
- [Int] getAmountsIn
+ [Lib] Address
- [Int] isContract
- [Int] sendValue #
- [Int] functionCall #
- [Int] functionCall #
- [Int] functionCallWithValue #
- [Int] functionCallWithValue #
- [Int] functionStaticCall
- [Int] functionStaticCall
- [Int] functionDelegateCall #
- [Int] functionDelegateCall #
- [Int] verifyCallResult
+ [Lib] SafeERC20
- [Int] safeTransfer #
- [Int] safeTransferFrom #
- [Int] safeApprove #
- [Int] safeIncreaseAllowance #
- [Int] safeDecreaseAllowance #
- [Prv] _callOptionalReturn #
+ ReentrancyGuard
- [Pub] #
+ [Lib] Math
- [Int] max
- [Int] min
- [Int] average
- [Int] ceilDiv
+ [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] ITokenVestingBase
- [Ext] getVestingSchedulesCountByBeneficiary
- [Ext] getVestingIdAtIndex
- [Ext] getVestingSchedulesTotalAmount
- [Ext] getToken
- [Ext] createVestingSchedule #
- [Ext] revoke #
- [Ext] withdraw #
- [Ext] release #
- [Ext] getVestingSchedulesCount
- [Ext] computeReleasableAmount
- [Ext] getWithdrawableAmount
- [Ext] computeNextVestingScheduleIdForHolder
- [Ext] computeLatestVestingScheduleIdForHolder
- [Ext] computeVestingScheduleIdForAddressAndIndex
+ [Lib] console
- [Prv] _sendLogPayload
- [Int] log
- [Int] logInt
- [Int] logUint
- [Int] logString
- [Int] logBool
- [Int] logAddress
- [Int] logBytes
- [Int] logBytes1
- [Int] logBytes2
- [Int] logBytes3
- [Int] logBytes4
- [Int] logBytes5
- [Int] logBytes6
- [Int] logBytes7
- [Int] logBytes8
- [Int] logBytes9
- [Int] logBytes10
- [Int] logBytes11
- [Int] logBytes12
- [Int] logBytes13
- [Int] logBytes14
- [Int] logBytes15
- [Int] logBytes16
- [Int] logBytes17
- [Int] logBytes18
- [Int] logBytes19
- [Int] logBytes20
- [Int] logBytes21
- [Int] logBytes22
- [Int] logBytes23
- [Int] logBytes24
- [Int] logBytes25
- [Int] logBytes26
- [Int] logBytes27
- [Int] logBytes28
- [Int] logBytes29
- [Int] logBytes30
- [Int] logBytes31
- [Int] logBytes32
- [Int] log
- [Int] log
- [Int] log
- [Int] log
- [Int] log
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- [Int] log
- [Int] log
- [Int] log
- [Int] log
- [Int] log
- [Int] log
- [Int] log
- [Int] log
+ LPCapitalization (Ownable)
- [Pub] #
- [Ext] setDamoDaiPair #
- modifiers: onlyOwner
- [Pub] calculatePayout
- [Ext] deposit #
- [Int] _updateLiquidity #
- [Ext] updateMAX_LP #
- modifiers: onlyOwner
- [Ext] updateDiscount #
- modifiers: onlyOwner
- [Int] _applyDiscount

# TokenVestingBase Contract

```
($) = payable function
# = non-constant function
Int = Internal
Ext = External
Pub = Public
+ [Int] IERC20
- [Ext] totalSupply
- [Ext] balanceOf
- [Ext] transfer #
- [Ext] allowance
- [Ext] approve #
- [Ext] transferFrom #
+ [Lib] Address
- [Int] isContract
- [Int] sendValue #
- [Int] functionCall #
- [Int] functionCall #
- [Int] functionCallWithValue #
- [Int] functionCallWithValue #
- [Int] functionStaticCall
- [Int] functionStaticCall
- [Int] functionDelegateCall #
- [Int] functionDelegateCall #
- [Int] verifyCallResult
+ [Lib] SafeERC20
- [Int] safeTransfer #
- [Int] safeTransferFrom #
- [Int] safeApprove #
- [Int] safeIncreaseAllowance #
- [Int] safeDecreaseAllowance #
- [Prv] _callOptionalReturn #
+ ReentrancyGuard
- [Pub]
``` #
+ Context
- [Int] _msgSender
- [Int] _msgData
+ Ownable (Context)
- [Pub] #
- [Pub] owner
- [Pub] renounceOwnership #
- modifiers: onlyOwner
- [Pub] transferOwnership #
- modifiers: onlyOwner
- [Int] _transferOwnership #
+ [Lib] Math
- [Int] max
- [Int] min
- [Int] average
- [Int] ceilDiv
+ [Lib] SafeMath
- [Int] tryAdd
- [Int] trySub
- [Int] tryMul
- [Int] tryDiv
- [Int] tryMod
- [Int] add
- [Int] sub
- [Int] mul
- [Int] div
- [Int] mod
- [Int] sub
- [Int] div
- [Int] mod
+ TokenVestingBase (Ownable, ReentrancyGuard)
- [Pub] #
- [Ext] ($)
- [Ext] ($)
- [Ext] getVestingSchedulesCountByBeneficiary
- [Ext] getVestingIdAtIndex
- [Ext] getVestingScheduleByAddressAndIndex
- [Ext] getVestingSchedulesTotalAmount
- [Ext] getToken
- [Pub] createVestingSchedule #
- [Int] _createVestingSchedule #
- [Pub] revoke #
- modifiers: onlyOwner,onlyIfVestingScheduleNotRevoked
- [Pub] withdraw #
- modifiers: nonReentrant,onlyOwner
- [Pub] release #
- modifiers: nonReentrant,onlyIfVestingScheduleNotRevoked
- [Pub] getVestingSchedulesCount
- [Pub] computeReleasableAmount
- modifiers: onlyIfVestingScheduleNotRevoked
- [Pub] getVestingSchedule
- [Pub] getWithdrawableAmount
- [Pub] computeNextVestingScheduleIdForHolder
- [Pub] computeLatestVestingScheduleIdForHolder
- [Pub] getLastVestingScheduleForHolder
- [Pub] computeVestingScheduleIdForAddressAndIndex
- [Int] _computeReleasableAmount
- [Int] getCurrentTime

# PriceOracle Contract

```
($) = payable function
# = non-constant function
Int = Internal
Ext = External
Pub = Public
+ [Int] IUniswapV2Pair
- [Ext] name
- [Ext] symbol
- [Ext] decimals
- [Ext] totalSupply
- [Ext] balanceOf
- [Ext] allowance
- [Ext] approve #
- [Ext] transfer #
- [Ext] transferFrom #
- [Ext] DOMAIN_SEPARATOR
- [Ext] PERMIT_TYPEHASH
- [Ext] nonces
- [Ext] permit #
- [Ext] MINIMUM_LIQUIDITY
- [Ext] factory
- [Ext] token0
- [Ext] token1
- [Ext] getReserves
- [Ext] price0CumulativeLast
- [Ext] price1CumulativeLast
- [Ext] kLast
- [Ext] mint #
- [Ext] burn #
- [Ext] swap #
- [Ext] skim #
- [Ext] sync #
- [Ext] initialize #
+ [Lib] FixedPoint
- [Int] encode
- [Int] encode144
- [Int] div
- [Int] mul
- [Int] fraction
- [Int] decode
- [Int] decode144
+ [Int] KeeperCompatibleInterface
- [Ext] checkUpkeep #
- [Ext] performUpkeep #
+ [Lib] UniswapV2OracleLibrary
- [Int] currentBlockTimestamp
- [Int] currentCumulativePrices
+ [Lib] SafeMath
- [Int] add
- [Int] sub
- [Int] mul
+ [Lib] UniswapV2Library
- [Int] sortTokens
- [Int] pairFor
- [Int] getReserves
- [Int] quote
- [Int] getAmountOut
- [Int] getAmountIn
- [Int] getAmountsOut
- [Int] getAmountsIn
+ [Int] IPriceOracle
- [Ext] update #
- [Ext] consult
+ PriceOracle (IPriceOracle, KeeperCompatibleInterface)
- [Pub]
``` #
- [Ext] checkUpkeep
- [Ext] performUpkeep #
- [Ext] update #
- [Int] _update #
- [Ext] consult

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*What is a Solidity Audit?*

Typically, a smart contract audit is a comprehensive review process designed to discover logical errors, security vulnerabilities, and optimization opportunities within code. A *Solidity Audit* takes this a step further by verifying economic logic to ensure the stability of smart contracts and highlighting privileged functionality to create a report that is easy to understand for developers and community members alike.

*How Do I Interpret the Findings?*

Each of our Findings will be labeled with a Severity level. We always recommend the team resolve High, Medium, and Low severity findings prior to deploying the code to the mainnet. Here is a breakdown on what each Severity level means for the project:

**High**severity indicates that the issue puts a large number of users' funds at risk and has a high probability of exploitation, or the smart contract contains serious logical issues which can prevent the code from operating as intended.**Medium**severity issues are those which place at least some users' funds at risk and has a medium to high probability of exploitation.**Low**severity issues have a relatively minor risk association; these issues have a low probability of occurring or may have a minimal impact.**Informational**issues pose no immediate risk, but inform the project team of opportunities for gas optimizations and following smart contract security best practices.