Add missing defensive copy to APIResponse

APIResponse is supposed to be immutable, but was exposing
its internals in the getResponseBodyAsByteArray() method.
This change adds the missing defensive copy in that method.

Change-Id: I8a424a4cb72eb703fb425ffbd30ea70d6592f85a
Signed-off-by: Gary Wu <gary.i.wu@huawei.com>

1 files changed, 9 insertions, 7 deletions

diff --git a/bpmn/MSORESTClient/src/main/java/org/openecomp/mso/rest/APIResponse.java b/bpmn/MSORESTClient/src/main/java/org/openecomp/mso/rest/APIResponse.java
index dfb9f36..ea9ca62 100644
--- a/bpmn/MSORESTClient/src/main/java/org/openecomp/mso/rest/APIResponse.java
+++ b/bpmn/MSORESTClient/src/main/java/org/openecomp/mso/rest/APIResponse.java
@@ -21,6 +21,7 @@
 package org.openecomp.mso.rest;
 
 import java.io.IOException;
+import java.util.Arrays;
 
 import org.apache.http.Header;
 import org.apache.http.HttpResponse;
@@ -44,7 +45,7 @@ public class APIResponse {
      * @param httpResponse used to create headers
      * @return http headers
      */
-    private HttpHeader[] buildHeaders(final HttpResponse httpResponse) {
+    private static HttpHeader[] buildHeaders(final HttpResponse httpResponse) {
         final Header[] headers = httpResponse.getAllHeaders();
 
         HttpHeader[] httpHeaders = new HttpHeader[headers.length];
@@ -102,7 +103,12 @@ public class APIResponse {
      * @return http response body
      */
     public byte[] getResponseBodyAsByteArray() {
-        return this.responseBody;
+        // avoid exposing internals, create copy
+        if (this.responseBody != null) {
+            return Arrays.copyOf(this.responseBody, this.responseBody.length);
+        } else {
+            return null;
+        }
     }
 
     /**
@@ -125,11 +131,7 @@ public class APIResponse {
      */
     public HttpHeader[] getAllHeaders() {
         // avoid exposing internals, create copy
-        HttpHeader[] copy = new HttpHeader[this.headers.length];
-        for (int i = 0; i < this.headers.length; ++i) {
-            copy[i] = headers[i];
-        }
-        return copy;
+        return Arrays.copyOf(this.headers, this.headers.length);
     }
 
     public String getFirstHeader(String name) {