1 /*
2  * Copyright (C) 2017 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 import java.util.Base64;
18 
19 class MethodChange {
20   // The following is a base64 encoding of the following class.
21   // class Transform {
22   //   void sayHi(String name) {
23   //     throw new Error("Should not be called!");
24   //   }
25   // }
26   private static final byte[] CLASS_BYTES = Base64.getDecoder().decode(
27     "yv66vgAAADQAFQoABgAPBwAQCAARCgACABIHABMHABQBAAY8aW5pdD4BAAMoKVYBAARDb2RlAQAP" +
28     "TGluZU51bWJlclRhYmxlAQAFc2F5SGkBABUoTGphdmEvbGFuZy9TdHJpbmc7KVYBAApTb3VyY2VG" +
29     "aWxlAQAOVHJhbnNmb3JtLmphdmEMAAcACAEAD2phdmEvbGFuZy9FcnJvcgEAFVNob3VsZCBub3Qg" +
30     "YmUgY2FsbGVkIQwABwAMAQAJVHJhbnNmb3JtAQAQamF2YS9sYW5nL09iamVjdAAgAAUABgAAAAAA" +
31     "AgAAAAcACAABAAkAAAAdAAEAAQAAAAUqtwABsQAAAAEACgAAAAYAAQAAAAIAAAALAAwAAQAJAAAA" +
32     "IgADAAIAAAAKuwACWRIDtwAEvwAAAAEACgAAAAYAAQAAAAQAAQANAAAAAgAO");
33   private static final byte[] DEX_BYTES = Base64.getDecoder().decode(
34     "ZGV4CjAzNQCrV81cy4Q+YKMMMqc0bZEO5Y1X5u7irPeQAgAAcAAAAHhWNBIAAAAAAAAAAPwBAAAL" +
35     "AAAAcAAAAAUAAACcAAAAAgAAALAAAAAAAAAAAAAAAAQAAADIAAAAAQAAAOgAAACIAQAACAEAAEoB" +
36     "AABSAQAAXwEAAHIBAACGAQAAmgEAALEBAADBAQAAxAEAAMgBAADcAQAAAQAAAAIAAAADAAAABAAA" +
37     "AAcAAAAHAAAABAAAAAAAAAAIAAAABAAAAEQBAAAAAAAAAAAAAAAAAQAKAAAAAQABAAAAAAACAAAA" +
38     "AAAAAAAAAAAAAAAAAgAAAAAAAAAGAAAAAAAAAO4BAAAAAAAAAQABAAEAAADjAQAABAAAAHAQAwAA" +
39     "AA4ABAACAAIAAADoAQAACQAAACIAAQAbAQUAAABwIAIAEAAnAAAAAQAAAAMABjxpbml0PgALTFRy" +
40     "YW5zZm9ybTsAEUxqYXZhL2xhbmcvRXJyb3I7ABJMamF2YS9sYW5nL09iamVjdDsAEkxqYXZhL2xh" +
41     "bmcvU3RyaW5nOwAVU2hvdWxkIG5vdCBiZSBjYWxsZWQhAA5UcmFuc2Zvcm0uamF2YQABVgACVkwA" +
42     "EmVtaXR0ZXI6IGphY2stNC4yNAAFc2F5SGkAAgAHDgAEAQAHDgAAAAEBAICABIgCAQCgAgwAAAAA" +
43     "AAAAAQAAAAAAAAABAAAACwAAAHAAAAACAAAABQAAAJwAAAADAAAAAgAAALAAAAAFAAAABAAAAMgA" +
44     "AAAGAAAAAQAAAOgAAAABIAAAAgAAAAgBAAABEAAAAQAAAEQBAAACIAAACwAAAEoBAAADIAAAAgAA" +
45     "AOMBAAAAIAAAAQAAAO4BAAAAEAAAAQAAAPwBAAA=");
46 
doTest(Transform t)47   public static void doTest(Transform t) {
48     t.sayHi("MethodChange");
49     try {
50       Main.doCommonClassRedefinition(Transform.class, CLASS_BYTES, DEX_BYTES);
51     } catch (Exception e) {
52       System.out.println(
53           "Transformation error : " + e.getClass().getName() + "(" + e.getMessage() + ")");
54     }
55     t.sayHi("MethodChange");
56   }
57 }
58