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* [edk2-devel] [edk2-redfish-client][PATCH 6/6] RedfishClientPkg/RedfishFeatureUtilityLib: add string NULL check
@ 2023-11-23 14:34 Nickle Wang via groups.io
  2023-11-28  5:17 ` Chang, Abner via groups.io
  0 siblings, 1 reply; 2+ messages in thread
From: Nickle Wang via groups.io @ 2023-11-23 14:34 UTC (permalink / raw)
  To: devel; +Cc: Abner Chang, Igor Kulchytskyy, Nick Ramirez

Add string NULL check in attribute comparison function and prevent
NULL string assertion. This is not supposed to happen in normal
condition so add error output for debugging purpose.

Signed-off-by: Nickle Wang <nicklew@nvidia.com>
Cc: Abner Chang <abner.chang@amd.com>
Cc: Igor Kulchytskyy <igork@ami.com>
Cc: Nick Ramirez <nramirez@nvidia.com>
---
 .../RedfishFeatureUtilityLib.c                | 31 ++++++++++++++-----
 1 file changed, 24 insertions(+), 7 deletions(-)

diff --git a/RedfishClientPkg/Library/RedfishFeatureUtilityLib/RedfishFeatureUtilityLib.c b/RedfishClientPkg/Library/RedfishFeatureUtilityLib/RedfishFeatureUtilityLib.c
index 753cd7b2..6652539c 100644
--- a/RedfishClientPkg/Library/RedfishFeatureUtilityLib/RedfishFeatureUtilityLib.c
+++ b/RedfishClientPkg/Library/RedfishFeatureUtilityLib/RedfishFeatureUtilityLib.c
@@ -3743,6 +3743,15 @@ CompareRedfishPropertyVagueValues (
     // Loop through all key/value on Redfish service..
     //
     while (ThisRedfishVagueKeyValuePtr != NULL) {
+      //
+      // Empty attribute string check.
+      //
+      if (IS_EMPTY_STRING (ThisConfigVagueKeyValuePtr->KeyNamePtr) || IS_EMPTY_STRING (ThisRedfishVagueKeyValuePtr->KeyNamePtr)) {
+        DEBUG ((DEBUG_ERROR, "%a: empty attribute name detected!!\n", __func__));
+        ThisRedfishVagueKeyValuePtr = ThisRedfishVagueKeyValuePtr->NextKeyValuePtr;
+        continue;
+      }
+
       if (AsciiStrCmp (ThisConfigVagueKeyValuePtr->KeyNamePtr, ThisRedfishVagueKeyValuePtr->KeyNamePtr) == 0) {
         //
         // Check the type of value.
@@ -3758,28 +3767,36 @@ CompareRedfishPropertyVagueValues (
           //
           // Is the string identical?
           //
-          if (AsciiStrCmp (
-                ThisConfigVagueKeyValuePtr->Value->DataValue.CharPtr,
-                ThisRedfishVagueKeyValuePtr->Value->DataValue.CharPtr
-                ) == 0)
-          {
-            break;
+          if ((ThisConfigVagueKeyValuePtr->Value->DataValue.CharPtr != NULL) && (ThisRedfishVagueKeyValuePtr->Value->DataValue.CharPtr != NULL)) {
+            if (AsciiStrCmp (
+                  ThisConfigVagueKeyValuePtr->Value->DataValue.CharPtr,
+                  ThisRedfishVagueKeyValuePtr->Value->DataValue.CharPtr
+                  ) == 0)
+            {
+              break;
+            } else {
+              DEBUG ((REDFISH_DEBUG_TRACE, "%a: %a is updated\n", __func__, ThisConfigVagueKeyValuePtr->KeyNamePtr));
+              return FALSE;
+            }
           } else {
-            return FALSE;
+            DEBUG ((DEBUG_ERROR, "%a: NULL attribute (%a) value detected!!\n", __func__, ThisConfigVagueKeyValuePtr->KeyNamePtr));
           }
         } else if (ThisConfigVagueKeyValuePtr->Value->DataType == RedfishCS_Vague_DataType_Int64) {
           if (*ThisConfigVagueKeyValuePtr->Value->DataValue.Int64Ptr == *ThisRedfishVagueKeyValuePtr->Value->DataValue.Int64Ptr) {
             break;
           } else {
+            DEBUG ((REDFISH_DEBUG_TRACE, "%a: %a is updated\n", __func__, ThisConfigVagueKeyValuePtr->KeyNamePtr));
             return FALSE;
           }
         } else if (ThisConfigVagueKeyValuePtr->Value->DataType == RedfishCS_Vague_DataType_Bool) {
           if ((UINT8)*ThisConfigVagueKeyValuePtr->Value->DataValue.BoolPtr == (UINT8)*ThisRedfishVagueKeyValuePtr->Value->DataValue.BoolPtr) {
             break;
           } else {
+            DEBUG ((REDFISH_DEBUG_TRACE, "%a: %a is updated\n", __func__, ThisConfigVagueKeyValuePtr->KeyNamePtr));
             return FALSE;
           }
         } else {
+          DEBUG ((REDFISH_DEBUG_TRACE, "%a: %a unsupported type: 0x%x\n", __func__, ThisConfigVagueKeyValuePtr->KeyNamePtr, ThisConfigVagueKeyValuePtr->Value->DataType));
           return FALSE;
         }
       }
-- 
2.17.1



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2023-11-23 14:34 [edk2-devel] [edk2-redfish-client][PATCH 6/6] RedfishClientPkg/RedfishFeatureUtilityLib: add string NULL check Nickle Wang via groups.io
2023-11-28  5:17 ` Chang, Abner via groups.io

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