From 6eee29a8aa6bd7a6e37e4429c2ad053dff37bb3c Mon Sep 17 00:00:00 2001
From: yoloyyh <1764163852@qq.com>
Date: Thu, 17 Oct 2024 20:55:33 +0800
Subject: [PATCH] fix serializer exception

---
 .../smith/client/message/ClassFilterSerializer.java         | 2 +-
 .../com/security/smith/client/message/TraceSerializer.java  | 6 ++++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/rasp/jvm/JVMProbe/src/main/java/com/security/smith/client/message/ClassFilterSerializer.java b/rasp/jvm/JVMProbe/src/main/java/com/security/smith/client/message/ClassFilterSerializer.java
index 44b996d95..3555aaa91 100644
--- a/rasp/jvm/JVMProbe/src/main/java/com/security/smith/client/message/ClassFilterSerializer.java
+++ b/rasp/jvm/JVMProbe/src/main/java/com/security/smith/client/message/ClassFilterSerializer.java
@@ -31,7 +31,7 @@ public JsonElement serialize(ClassFilter src, Type typeOfSrc, JsonSerializationC
 
     private String[] convertStackTrace(StackTraceElement[] stackTrace) {
         if (stackTrace.length <= 2)
-            return null;
+            return new String[0];
 
         StackTraceElement[] elements = Arrays.copyOfRange(stackTrace, 2, stackTrace.length);
         String[] result = new String[elements.length];
diff --git a/rasp/jvm/JVMProbe/src/main/java/com/security/smith/client/message/TraceSerializer.java b/rasp/jvm/JVMProbe/src/main/java/com/security/smith/client/message/TraceSerializer.java
index 8377d8875..d033551cd 100644
--- a/rasp/jvm/JVMProbe/src/main/java/com/security/smith/client/message/TraceSerializer.java
+++ b/rasp/jvm/JVMProbe/src/main/java/com/security/smith/client/message/TraceSerializer.java
@@ -29,6 +29,8 @@ private String convertRet(Object value) {
     }
 
     private String[] convertArgs(Object[] value) {
+        if (value == null)
+            return new String[0];
         String[] result = new String[value.length];
         for (int i = 0; i < value.length; i++) {
             result[i] = String.valueOf(value[i]);
@@ -37,8 +39,8 @@ private String[] convertArgs(Object[] value) {
     }
 
    private String[] convertStackTrace(StackTraceElement[] stackTrace) {
-        if (stackTrace.length <= 2)
-            return null;
+        if (stackTrace == null || stackTrace.length <= 2)
+            return new String[0];
 
         StackTraceElement[] elements = Arrays.copyOfRange(stackTrace, 2, stackTrace.length);
         String[] result = new String[elements.length];