Merge pull request #12 from VenusProtocol/feat/VPD-70

[VPD-70] Leverage Manager contract

Author: Exef

.prettierignore

@@ -10,7 +10,4 @@ scenario
 typechain
 contracts/oracle
 CHANGELOG.md
-docs
-
-# Ignore SwapHelper.sol since it was already audited
-contracts/SwapHelper/SwapHelper.sol
+docs

.prettierrc

@@ -2,13 +2,30 @@
   "arrowParens": avoid,
   "bracketSpacing": true,
   "endOfLine": "auto",
-  "importOrder": ["module-alias/register", "<THIRD_PARTY_MODULES>", "^[./]"],
-  "importOrderParserPlugins": ["typescript"],
+  "importOrder": [
+    "module-alias/register",
+    "<THIRD_PARTY_MODULES>",
+    "^[./]"
+  ],
+  "importOrderParserPlugins": [
+    "typescript"
+  ],
   "importOrderSeparation": true,
   "importOrderSortSpecifiers": true,
   "printWidth": 120,
   "singleQuote": false,
   "tabWidth": 2,
   "trailingComma": all,
-  "overrides": [{ "files": "*.sol", "options": { "tabWidth": 4 } }],
-}
+  "overrides": [
+    {
+      "files": "*.sol",
+      "options": {
+        "tabWidth": 4
+      }
+    }
+  ],
+  "plugins": [
+    "prettier-plugin-solidity",
+    "@trivago/prettier-plugin-sort-imports"
+  ]
+}

.solhint.json

@@ -4,12 +4,26 @@
     "code-complexity": ["error", 15],
     "compiler-version": ["error", ">=0.5.0"],
     "const-name-snakecase": "error",
+    "immutable-vars-naming": "off",
     "constructor-syntax": "error",
-    "func-visibility": ["error", { "ignoreConstructors": true }],
+    "func-visibility": [
+      "error",
+      {
+        "ignoreConstructors": true
+      }
+    ],
+    "function-max-lines": ["warn", 60],
     "max-line-length": ["error", 175],
     "not-rely-on-time": "off",
     "no-global-import": "error",
-    "reason-string": ["warn", { "maxLength": 64 }],
-    "ordering": "warn"
+    "reason-string": [
+      "warn",
+      {
+        "maxLength": 64
+      }
+    ],
+    "ordering": "warn",
+    "state-visibility": "off",
+    "avoid-low-level-calls": "off"
   }
 }

audits/159_SwapHelper_Hashdit_20251112.pdf

@@ -23,6 +23,8 @@ interface IVToken is IERC20Upgradeable {
 
     function repayBorrowBehalf(address borrower, uint repayAmount) external returns (uint256);
 
+    function redeemUnderlyingBehalf(address redeemer, uint redeemAmount) external returns (uint);
+
     function comptroller() external view returns (IComptroller);
 
     function borrowBalanceStored(address account) external view returns (uint256);
@@ -53,6 +55,8 @@ interface IComptroller {
 
     function enterMarkets(address[] calldata vTokens) external returns (uint256[] memory);
 
+    function enterMarketBehalf(address onBehalf, address vToken) external returns (uint256);
+
     function enterMarket(address user, address vToken) external returns (uint256);
 
     function liquidationIncentiveMantissa() external view returns (uint256);
@@ -74,10 +78,60 @@ interface IComptroller {
     function getAccountLiquidity(address account) external view returns (uint256, uint256, uint256);
 
     function checkMembership(address account, IVToken vToken) external view returns (bool);
+
+    function getBorrowingPower(
+        address account
+    ) external view returns (uint256 error, uint256 liquidity, uint256 shortfall);
+
+    function treasuryPercent() external view returns (uint256);
+
+    function executeFlashLoan(
+        address payable onBehalf,
+        address payable receiver,
+        IVToken[] memory vTokens,
+        uint256[] memory underlyingAmounts,
+        bytes memory param
+    ) external;
+}
+
+interface IFlashLoanReceiver {
+    /**
+     * @notice Executes an operation after receiving the flash-borrowed assets.
+     * @dev Implementation of this function must ensure at least the premium (fee) is repaid within the same transaction.
+     *      Any unpaid balance (principal + premium - repaid amount) will be added to the onBehalf address's borrow balance.
+     * @param vTokens The vToken contracts corresponding to the flash-borrowed underlying assets.
+     * @param amounts The amounts of each underlying asset that were flash-borrowed.
+     * @param premiums The premiums (fees) associated with each flash-borrowed asset.
+     * @param initiator The address that initiated the flash loan.
+     * @param onBehalf The address of the user whose debt position will be used for any unpaid flash loan balance.
+     * @param param Additional parameters encoded as bytes. These can be used to pass custom data to the receiver contract.
+     * @return success True if the operation succeeds (regardless of repayment amount), false if the operation fails.
+     * @return repayAmounts Array of uint256 representing the amounts to be repaid for each asset. The receiver contract
+     *         must approve these amounts to the respective vToken contracts before this function returns.
+     */
+    function executeOperation(
+        IVToken[] calldata vTokens,
+        uint256[] calldata amounts,
+        uint256[] calldata premiums,
+        address initiator,
+        address onBehalf,
+        bytes calldata param
+    ) external returns (bool success, uint256[] memory repayAmounts);
 }
 
 interface IWBNB is IERC20Upgradeable {
     function deposit() external payable;
 
     function withdraw(uint256 amount) external;
 }
+
+interface IProtocolShareReserve {
+    enum IncomeType {
+        SPREAD,
+        LIQUIDATION,
+        ERC4626_WRAPPER_REWARDS,
+        FLASHLOAN
+    }
+
+    function updateAssetsState(address comptroller, address asset, IncomeType incomeType) external;
+}