1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 import java.lang.reflect.Constructor;
  24 import java.util.prefs.Preferences;
  25 import java.util.prefs.PreferencesFactory;
  26 
  27 /*
  28  * @test
  29  * @bug 8068373
  30  * @requires os.family == "linux" | os.family == "solaris"
  31  * @summary Ensure writing a code point U+0000 null control character is detected.
  32  */
  33 public class CodePointZeroPrefsTest
  34 {
  35     public static void main(String[] args) throws Exception
  36     {
  37         int failures = 0;
  38 
  39         // Deliberately reflect so you can reproduce it on any platform.
  40         Constructor<? extends PreferencesFactory> constructor =
  41             Class.forName("java.util.prefs.FileSystemPreferencesFactory").asSubclass(PreferencesFactory.class).getDeclaredConstructor();
  42         constructor.setAccessible(true);
  43         PreferencesFactory factory = constructor.newInstance();
  44 
  45         Preferences node = factory.userRoot().node("com/acme/testing");
  46 
  47         // legal key and value
  48         try {
  49             node.put("a", "1");
  50         } catch (IllegalArgumentException iae) {
  51             System.err.println("Unexpected IllegalArgumentException for legal key");
  52             failures++;
  53         }
  54 
  55         // illegal key only
  56         int numIAEs = 0;
  57         try {
  58             node.put("a\u0000b", "1");
  59             System.err.println("IllegalArgumentException not thrown for illegal key");
  60             failures++;
  61         } catch (IllegalArgumentException iae) {
  62             // do nothing
  63         }
  64 
  65         // illegal value only
  66         numIAEs = 0;
  67         try {
  68             node.put("ab", "2\u00003");
  69             System.err.println("IllegalArgumentException not thrown for illegal value");
  70             failures++;
  71         } catch (IllegalArgumentException iae) {
  72             // do nothing
  73         }
  74 
  75         // illegal key and value
  76         numIAEs = 0;
  77         try {
  78             node.put("a\u0000b", "2\u00003");
  79             System.err.println("IllegalArgumentException not thrown for illegal entry");
  80             failures++;
  81         } catch (IllegalArgumentException iae) {
  82             // do nothing
  83         }
  84 
  85         if (failures != 0) {
  86             throw new RuntimeException("CodePointZeroPrefsTest failed with "
  87                 + failures + " errors!");
  88         }
  89     }
  90 }