1 /*
2  * Copyright (C) 2020 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package art;
18 
19 import java.util.Base64;
20 import java.lang.reflect.Method;
21 
22 public class Test2035 {
23   public static class Transform {
Transform()24     public Transform() {}
25 
getValue()26     public native long getValue();
27   }
28   /*
29    * base64 encoded class/dex file for
30    * Base64 generated using:
31    * % javac Test2035.java
32    * % d8 Test2035\$Transform.class
33    * % base64 classes.dex| sed 's:^:":' | sed 's:$:" +:'
34    *
35    * package art;
36    * public static class Transform {
37    *   public Transform() {
38    *   }
39    *   public native long getValue();
40    *   public long nonNativeValue() {
41    *     return 1337;
42    *   };
43    * }
44    */
45   private static final byte[] DEX_BYTES =
46       Base64.getDecoder()
47           .decode(
48               "ZGV4CjAzNQAIm/YHNPSI0ggIbrKz6Jg/IBYl2Kq0TXS8AwAAcAAAAHhWNBIAAAAAAAAAABADAAAQ"
49                   + "AAAAcAAAAAcAAACwAAAAAgAAAMwAAAAAAAAAAAAAAAQAAADkAAAAAQAAAAQBAACYAgAAJAEAAGAB"
50                   + "AABoAQAAawEAAIUBAACVAQAAuQEAANkBAADtAQAA/AEAAAcCAAAKAgAAFwIAACECAAAnAgAANwIA"
51                   + "AD4CAAABAAAAAgAAAAMAAAAEAAAABQAAAAYAAAAJAAAAAQAAAAAAAAAAAAAACQAAAAYAAAAAAAAA"
52                   + "AQABAAAAAAABAAAACwAAAAEAAAANAAAABQABAAAAAAABAAAAAQAAAAUAAAAAAAAABwAAAAADAADb"
53                   + "AgAAAAAAAAMAAQAAAAAAVAEAAAMAAAAWADkFEAAAAAEAAQABAAAAWAEAAAQAAABwEAMAAAAOAA0A"
54                   + "DgAJAA48AAAAAAY8aW5pdD4AAUoAGExhcnQvVGVzdDIwMzUkVHJhbnNmb3JtOwAOTGFydC9UZXN0"
55                   + "MjAzNTsAIkxkYWx2aWsvYW5ub3RhdGlvbi9FbmNsb3NpbmdDbGFzczsAHkxkYWx2aWsvYW5ub3Rh"
56                   + "dGlvbi9Jbm5lckNsYXNzOwASTGphdmEvbGFuZy9PYmplY3Q7AA1UZXN0MjAzNS5qYXZhAAlUcmFu"
57                   + "c2Zvcm0AAVYAC2FjY2Vzc0ZsYWdzAAhnZXRWYWx1ZQAEbmFtZQAObm9uTmF0aXZlVmFsdWUABXZh"
58                   + "bHVlAIsBfn5EOHsiY29tcGlsYXRpb24tbW9kZSI6ImRlYnVnIiwiaGFzLWNoZWNrc3VtcyI6ZmFs"
59                   + "c2UsIm1pbi1hcGkiOjEsInNoYS0xIjoiOGNkYTg3OGE1MjJiMjJkMWQ2YTljNGQ0MjY5M2Y0OTAw"
60                   + "MjJmZTQ2YiIsInZlcnNpb24iOiIyLjIuMS1kZXYifQACAwEOGAICBAIKBAkMFwgAAAECAIGABLwC"
61                   + "AYECAAEBpAIAAAAAAAAAAgAAAMwCAADSAgAA9AIAAAAAAAAAAAAAAAAAAA4AAAAAAAAAAQAAAAAA"
62                   + "AAABAAAAEAAAAHAAAAACAAAABwAAALAAAAADAAAAAgAAAMwAAAAFAAAABAAAAOQAAAAGAAAAAQAA"
63                   + "AAQBAAABIAAAAgAAACQBAAADIAAAAgAAAFQBAAACIAAAEAAAAGABAAAEIAAAAgAAAMwCAAAAIAAA"
64                   + "AQAAANsCAAADEAAAAgAAAPACAAAGIAAAAQAAAAADAAAAEAAAAQAAABADAAA=");
65 
run()66   public static void run() throws Exception {
67     Redefinition.setTestConfiguration(Redefinition.Config.COMMON_REDEFINE);
68     doTest();
69   }
70 
doTest()71   public static void doTest() throws Exception {
72     LinkClassMethods(Transform.class);
73     Transform t = new Transform();
74     System.out.println("value is " + t.getValue());
75     Redefinition.doCommonStructuralClassRedefinition(Transform.class, DEX_BYTES);
76     System.out.println("value is " + t.getValue());
77     System.out.println(
78         "non-native value is " + Transform.class.getDeclaredMethod("nonNativeValue").invoke(t));
79   }
80 
LinkClassMethods(Class<?> k)81   public static native void LinkClassMethods(Class<?> k);
82 }
83