1 /*

     2  * Copyright (c) 2019, 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 

    24 /*

    25  * @test

    26  * @bug     8227368

    27  * @summary Test deserialization of a stream containing EnumSet.class object

    28  */

    29 

    30 import java.io.ByteArrayOutputStream;

    31 import java.io.IOException;

    32 import java.io.InputStream;

    33 import java.io.ObjectInputStream;

    34 import java.io.ObjectOutputStream;

    35 import java.util.EnumSet;

    36 import java.util.stream.Collectors;

    37 import java.util.stream.IntStream;

    38 

    39 public class EnumSetClassSerialization {

    40 

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

    42         // EnumSet.class object serialized with JDK 8

    43         int[] bytes = {

    44             0xac, 0xed, 0x00, 0x05, 0x76, 0x72, 0x00, 0x11, 0x6a, 0x61, 0x76, 0x61, 0x2e, 0x75, 0x74, 0x69,

    45             0x6c, 0x2e, 0x45, 0x6e, 0x75, 0x6d, 0x53, 0x65, 0x74, 0x0e, 0x03, 0x21, 0x6a, 0xcd, 0x8c, 0x29,

    46             0xdd, 0x02, 0x00, 0x02, 0x4c, 0x00, 0x0b, 0x65, 0x6c, 0x65, 0x6d, 0x65, 0x6e, 0x74, 0x54, 0x79,

    47             0x70, 0x65, 0x74, 0x00, 0x11, 0x4c, 0x6a, 0x61, 0x76, 0x61, 0x2f, 0x6c, 0x61, 0x6e, 0x67, 0x2f,

    48             0x43, 0x6c, 0x61, 0x73, 0x73, 0x3b, 0x5b, 0x00, 0x08, 0x75, 0x6e, 0x69, 0x76, 0x65, 0x72, 0x73,

    49             0x65, 0x74, 0x00, 0x11, 0x5b, 0x4c, 0x6a, 0x61, 0x76, 0x61, 0x2f, 0x6c, 0x61, 0x6e, 0x67, 0x2f,

    50             0x45, 0x6e, 0x75, 0x6d, 0x3b, 0x78, 0x70

    51         };

    52 

    53         InputStream in = new InputStream() {

    54             int i = 0;

    55 

    56             @Override

    57             public int read() {

    58                 return i < bytes.length ? bytes[i++] & 0xFF : -1;

    59             }

    60         };

    61         ObjectInputStream ois = new ObjectInputStream(in);

    62 

    63         Object res = ois.readObject();

    64 

    65         if (res != EnumSet.class) {

    66             throw new AssertionError(

    67                 "Expected: " + EnumSet.class + ", got: " + res);

    68         }

    69     }

    70 

    71     /**

    72      * This class can be used to print out lines that constitute

    73      * the 'bytes' variable initializer in the test.

    74      */

    75     public static class Serializer {

    76         public static void main(String[] args) throws IOException {

    77             ByteArrayOutputStream baos = new ByteArrayOutputStream();

    78             ObjectOutputStream oos = new ObjectOutputStream(baos);

    79             oos.writeObject(EnumSet.class);

    80             oos.close();

    81             byte[] bytes = baos.toByteArray();

    82             int bpl = 16;

    83             System.out.print(

    84                 IntStream

    85                     .range(0, (bytes.length + bpl - 1) / bpl)

    86                     .mapToObj(i -> IntStream

    87                         .range(

    88                             i * bpl,

    89                             Math.min(i * bpl + bpl, bytes.length)

    90                         )

    91                         .mapToObj(ii -> {

    92                             String s = Integer.toHexString(bytes[ii] & 0xFF);

    93                             return s.length() == 1 ? "0x0" + s : "0x" + s;

    94                         })

    95                         .collect(Collectors.joining(", "))

    96                     )

    97                     .collect(Collectors.joining(",\n  ", "int[] bytes = {\n  ", "\n};"))

    98             );

    99         }

   100     }

   101 }