Fix for Cross Site Scripting Rule

added UT

presto-main/src/main/java/com/facebook/presto/server/AsyncPageTransportServlet.java

@@ -24,6 +24,7 @@
 import com.facebook.presto.execution.buffer.PageBufferInfo;
 import com.facebook.presto.operator.ExchangeClientConfig;
 import com.facebook.presto.spi.page.SerializedPage;
+import com.facebook.presto.util.SanitizeMessage;
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.ListenableFuture;
@@ -116,9 +117,8 @@ protected void doGet(HttpServletRequest request, HttpServletResponse response)
     protected void reportFailure(HttpServletResponse response, String message)
             throws IOException
     {
-        response.sendError(SC_BAD_REQUEST, message);
+        response.sendError(SC_BAD_REQUEST, SanitizeMessage.getSanitizeMessage(message));
     }
-
     protected void parseURI(String requestURI, HttpServletRequest request, HttpServletResponse response)
             throws IOException
     {
@@ -181,7 +181,7 @@ public void onError(AsyncEvent event)
             {
                 String errorMessage = format("Server error to process task result request %s : %s", requestURI, event.getThrowable().getMessage());
                 log.error(event.getThrowable(), errorMessage);
-                response.sendError(SC_INTERNAL_SERVER_ERROR, errorMessage);
+                response.sendError(SC_INTERNAL_SERVER_ERROR, SanitizeMessage.getSanitizeMessage(errorMessage));
             }
 
             public void onStartAsync(AsyncEvent event)

presto-main/src/main/java/com/facebook/presto/util/SanitizeMessage.java

@@ -0,0 +1,56 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.facebook.presto.util;
+
+public class SanitizeMessage
+{
+    private SanitizeMessage() {}
+
+    public static String getSanitizeMessage(String message)
+    {
+        if (message == null) {
+            return "";
+        }
+        StringBuilder stringBuilder = new StringBuilder(message.length());
+
+        // Traverse each character in the string and replace only when necessary
+        for (int i = 0; i < message.length(); i++) {
+            char ch = message.charAt(i);
+            switch (ch) {
+                case '&':
+                    stringBuilder.append("&amp;");
+                    break;
+                case '<':
+                    stringBuilder.append("&lt;");
+                    break;
+                case '>':
+                    stringBuilder.append("&gt;");
+                    break;
+                case '"':
+                    stringBuilder.append("&quot;");
+                    break;
+                case '\'':
+                    stringBuilder.append("&#39;");
+                    break;
+                case '/':
+                    stringBuilder.append("&#47;");
+                    break;
+                default:
+                    stringBuilder.append(ch);
+                    break;
+            }
+        }
+        return stringBuilder.toString();
+    }
+}

presto-main/src/test/java/com/facebook/presto/util/TestSanitizeMessage.java

@@ -0,0 +1,35 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.facebook.presto.util;
+
+import org.testng.annotations.Test;
+
+import static org.testng.Assert.assertEquals;
+
+public class TestSanitizeMessage
+{
+    @Test
+    public void testGetSanitizeMessage()
+    {
+        String message = "Server&> error/ to \" process < task result request ' ";
+        assertEquals(SanitizeMessage.getSanitizeMessage(message), "Server&amp;&gt; error&#47; to &quot; process &lt; task result request &#39; ");
+    }
+
+    @Test
+    public void testGetSanitizeMessageNullcheck()
+    {
+        String message = null;
+        assertEquals(SanitizeMessage.getSanitizeMessage(message), "");
+    }
+}