cp audit-fix && update event

contracts/DODOPrivatePool/impl/DPPTrader.sol

@@ -27,6 +27,13 @@ contract DPPTrader is DPPVault {
         address trader
     );
 
+    event DODOFlashLoan(
+        address borrower,
+        address assetTo,
+        uint256 baseAmount,
+        uint256 quoteAmount
+    );
+
     // ============ Modifiers ============
 
     modifier isBuyAllow(address trader) {
@@ -77,7 +84,7 @@ contract DPPTrader is DPPVault {
             address(_QUOTE_TOKEN_),
             baseInput,
             receiveQuoteAmount,
-            tx.origin
+            msg.sender
         );
     }
 
@@ -113,7 +120,7 @@ contract DPPTrader is DPPVault {
             address(_BASE_TOKEN_),
             quoteInput,
             receiveBaseAmount,
-            tx.origin
+            msg.sender
         );
     }
 
@@ -160,7 +167,7 @@ contract DPPTrader is DPPVault {
                 address(_BASE_TOKEN_),
                 quoteInput,
                 receiveBaseAmount,
-                tx.origin
+                msg.sender
             );
         }
 
@@ -186,11 +193,13 @@ contract DPPTrader is DPPVault {
                 address(_QUOTE_TOKEN_),
                 baseInput,
                 receiveQuoteAmount,
-                tx.origin
+                msg.sender
             );
         }
 
         _sync();
+        
+        emit DODOFlashLoan(msg.sender, assetTo, baseAmount, quoteAmount);
     }
 
     // ============ Query Functions ============

contracts/DODOPrivatePool/impl/DPPVault.sol

@@ -23,7 +23,10 @@ contract DPPVault is DPPStorage {
 
     // ============ Events ============
 
-    event Reset();
+    event Reset(
+        uint256 newLpFeeRate,
+        uint256 newMtFeeRate
+    );
 
     // ============ View Functions ============
 
@@ -32,6 +35,16 @@ contract DPPVault is DPPStorage {
         quoteReserve = _QUOTE_RESERVE_;
     }
 
+    function getUserFeeRate(address user) external view returns (uint256 lpFeeRate, uint256 mtFeeRate) {
+        lpFeeRate = _LP_FEE_RATE_MODEL_.getFeeRate(user);
+        mtFeeRate = _MT_FEE_RATE_MODEL_.getFeeRate(user);
+    }
+
+    function getUserTradePermission(address user) external view returns (bool isBuyAllow, bool isSellAllow) {
+        isBuyAllow = (!_BUYING_CLOSE_ && _TRADE_PERMISSION_.isAllowed(user));
+        isSellAllow =  (!_SELLING_CLOSE_ && _TRADE_PERMISSION_.isAllowed(user));
+    }
+
     // ============ Get Input ============
 
     function getBaseInput() public view returns (uint256 input) {
@@ -75,7 +88,7 @@ contract DPPVault is DPPStorage {
         _transferQuoteOut(assetTo, quoteOutAmount);
         _resetTargetAndReserve();
         _checkIK();
-        emit Reset();
+        emit Reset(newLpFeeRate, newMtFeeRate);
     }
 
     function _setRState() internal {