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  * @summary Ensure writing a code point U+0000 null control character is detected.

    31  */

    32 public class CodePointZeroPrefsTest

    33 {

    34     public static void main(String[] args) throws Exception

    35     {

    36         int failures = 0;

    37 

    38         // Deliberately reflect so you can reproduce it on any platform.

    39         Constructor<? extends PreferencesFactory> constructor =

    40             Class.forName("java.util.prefs.FileSystemPreferencesFactory").asSubclass(PreferencesFactory.class).getDeclaredConstructor();

    41         constructor.setAccessible(true);

    42         PreferencesFactory factory = constructor.newInstance();

    43 

    44         Preferences node = factory.userRoot().node("com/acme/testing");

    45 

    46         // legal key and value

    47         try {

    48             node.put("a", "1");

    49         } catch (IllegalArgumentException iae) {

    50             System.err.println("Unexpected IllegalArgumentException for legal key");

    51             failures++;

    52         }

    53 

    54         // illegal key only

    55         int numIAEs = 0;

    56         try {

    57             node.put("a\u0000b", "1");

    58             System.err.println("IllegalArgumentException not thrown for illegal key");

    59             failures++;

    60         } catch (IllegalArgumentException iae) {

    61             // do nothing

    62         }

    63 

    64         // illegal value only

    65         numIAEs = 0;

    66         try {

    67             node.put("ab", "2\u00003");

    68             System.err.println("IllegalArgumentException not thrown for illegal value");

    69             failures++;

    70         } catch (IllegalArgumentException iae) {

    71             // do nothing

    72         }

    73 

    74         // illegal key and value

    75         numIAEs = 0;

    76         try {

    77             node.put("a\u0000b", "2\u00003");

    78             System.err.println("IllegalArgumentException not thrown for illegal entry");

    79             failures++;

    80         } catch (IllegalArgumentException iae) {

    81             // do nothing

    82         }

    83 

    84         if (failures != 0) {

    85             throw new RuntimeException("CodePointZeroPrefsTest failed with "

    86                 + failures + " errors!");

    87         }

    88     }

    89 }