SimpleHttpResponse adds deserialization whitelist

Author: hengyunabc

tunnel-common/pom.xml

@@ -12,8 +12,16 @@
 	<url>https://github.com/alibaba/arthas</url>
 
 	<dependencies>
-
-
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <scope>test</scope>
+        </dependency>
 	</dependencies>
 
 	<build>

tunnel-common/src/main/java/com/alibaba/arthas/tunnel/common/SimpleHttpResponse.java

@@ -3,11 +3,14 @@
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.io.ObjectInput;
+import java.io.InvalidClassException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
+import java.io.ObjectStreamClass;
 import java.io.Serializable;
+import java.util.Arrays;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 /**
@@ -16,9 +19,11 @@
  *
  */
 public class SimpleHttpResponse implements Serializable {
-
     private static final long serialVersionUID = 1L;
 
+    private static final List<String> whitelist = Arrays.asList(byte[].class.getName(), String.class.getName(),
+            Map.class.getName(), HashMap.class.getName(), SimpleHttpResponse.class.getName());
+
     private int status = 200;
 
     private Map<String, String> headers = new HashMap<String, String>();
@@ -62,27 +67,28 @@ public static byte[] toBytes(SimpleHttpResponse response) throws IOException {
             out.flush();
             return bos.toByteArray();
         } finally {
-            try {
-                bos.close();
-            } catch (IOException ex) {
-                // ignore close exception
+            if (out != null) {
+                out.close();
             }
         }
     }
 
     public static SimpleHttpResponse fromBytes(byte[] bytes) throws IOException, ClassNotFoundException {
         ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
-        ObjectInput in = null;
+        ObjectInputStream in = null;
         try {
-            in = new ObjectInputStream(bis);
+            in = new ObjectInputStream(bis) {
+                protected Class<?> resolveClass(ObjectStreamClass desc) throws IOException, ClassNotFoundException {
+                    if (!whitelist.contains(desc.getName())) {
+                        throw new InvalidClassException("Unauthorized deserialization attempt", desc.getName());
+                    }
+                    return super.resolveClass(desc);
+                }
+            };
             return (SimpleHttpResponse) in.readObject();
         } finally {
-            try {
-                if (in != null) {
-                    in.close();
-                }
-            } catch (IOException ex) {
-                // ignore close exception
+            if (in != null) {
+                in.close();
             }
         }
     }

tunnel-common/src/test/java/com/alibaba/arthas/tunnel/common/SimpleHttpResponseTest.java

@@ -0,0 +1,65 @@
+package com.alibaba.arthas.tunnel.common;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InvalidClassException;
+import java.io.ObjectOutputStream;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.Test;
+
+public class SimpleHttpResponseTest {
+
+    @Test
+    public void testSerialization() throws IOException, ClassNotFoundException {
+        SimpleHttpResponse response = new SimpleHttpResponse();
+        response.setStatus(200);
+
+        Map<String, String> headers = new HashMap<String, String>();
+        headers.put("Content-Type", "text/plain");
+        response.setHeaders(headers);
+
+        String content = "Hello, world!";
+        response.setContent(content.getBytes());
+
+        byte[] bytes = SimpleHttpResponse.toBytes(response);
+
+        SimpleHttpResponse deserializedResponse = SimpleHttpResponse.fromBytes(bytes);
+
+        assertEquals(response.getStatus(), deserializedResponse.getStatus());
+        assertEquals(response.getHeaders(), deserializedResponse.getHeaders());
+        assertArrayEquals(response.getContent(), deserializedResponse.getContent());
+    }
+
+    public static byte[] toBytes(Object response) throws IOException {
+        ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        ObjectOutputStream out = null;
+        try {
+            out = new ObjectOutputStream(bos);
+            out.writeObject(response);
+            out.flush();
+            return bos.toByteArray();
+        } finally {
+            if (out != null) {
+                out.close();
+            }
+        }
+    }
+
+    @Test(expected = InvalidClassException.class)
+    public void testDeserializationWithUnauthorizedClass() throws IOException, ClassNotFoundException {
+        Date date = new Date();
+
+        byte[] bytes = toBytes(date);
+
+        // Try to deserialize the object with an unauthorized class
+        // This should throw an InvalidClassException
+        SimpleHttpResponse.fromBytes(bytes);
+    }
+
+}