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