4 files changed, 44 insertions, 11 deletions
diff --git a/netx/net/sourceforge/jnlp/NullJnlpFileException.java b/netx/net/sourceforge/jnlp/NullJnlpFileException.java
index 9c67f61..58c4d87 100644
--- a/netx/net/sourceforge/jnlp/NullJnlpFileException.java
+++ b/netx/net/sourceforge/jnlp/NullJnlpFileException.java
@@ -1,14 +1,42 @@
 package net.sourceforge.jnlp;
 
-/*
- * To change this template, choose Tools | Templates
- * and open the template in the editor.
- */
+/* 
+Copyright (C) 2012 Red Hat, Inc.
+
+This file is part of IcedTea.
+
+IcedTea is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License as published by
+the Free Software Foundation, version 2.
+
+IcedTea is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
 
-/**
- *
- * @author jvanek
+You should have received a copy of the GNU General Public License
+along with IcedTea; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.
  */
+
 public class NullJnlpFileException extends NullPointerException {
 
     public NullJnlpFileException() {
diff --git a/netx/net/sourceforge/jnlp/SecurityDesc.java b/netx/net/sourceforge/jnlp/SecurityDesc.java
index 927917a..51b58bb 100644
--- a/netx/net/sourceforge/jnlp/SecurityDesc.java
+++ b/netx/net/sourceforge/jnlp/SecurityDesc.java
@@ -149,6 +149,9 @@ public class SecurityDesc {
      * @param downloadHost the download host (can always connect to)
      */
     public SecurityDesc(JNLPFile file, Object type, String downloadHost) {
+        if (file == null) {
+            throw new NullJnlpFileException();
+        }
         this.file = file;
         this.type = type;
         this.downloadHost = downloadHost;
diff --git a/netx/net/sourceforge/jnlp/util/JarFile.java b/netx/net/sourceforge/jnlp/util/JarFile.java
index 8eee518..f90cba3 100644
--- a/netx/net/sourceforge/jnlp/util/JarFile.java
+++ b/netx/net/sourceforge/jnlp/util/JarFile.java
@@ -36,14 +36,16 @@
  exception statement from your version. */
 package net.sourceforge.jnlp.util;
 
+import java.io.Closeable;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import java.util.zip.ZipFile;
 import net.sourceforge.jnlp.runtime.JNLPRuntime;
 
-public class JarFile extends java.util.jar.JarFile {
+//in jdk6 java.util.jar.JarFile is not Closeable - fixing
+//overwritening  class can add duplicate occurence of interface so this should be perfectly safe
+public class JarFile extends java.util.jar.JarFile implements Closeable{
 
     public JarFile(String name) throws IOException {
        super(name);
diff --git a/netx/net/sourceforge/jnlp/util/StreamUtils.java b/netx/net/sourceforge/jnlp/util/StreamUtils.java
index 7dd7a92..6692d1c 100644
--- a/netx/net/sourceforge/jnlp/util/StreamUtils.java
+++ b/netx/net/sourceforge/jnlp/util/StreamUtils.java
@@ -73,8 +73,8 @@ public class StreamUtils {
             }
         }
     }
-    
-    
+
+
     public static String readStreamAsString(InputStream stream) throws IOException {
         InputStreamReader is = new InputStreamReader(stream);
         StringBuilder sb = new StringBuilder();