/* * Copyright (C) 2020 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package art; import java.util.Base64; import java.lang.reflect.Method; public class Test2035 { public static class Transform { public Transform() {} public native long getValue(); } /* * base64 encoded class/dex file for * Base64 generated using: * % javac Test2035.java * % d8 Test2035\$Transform.class * % base64 classes.dex| sed 's:^:":' | sed 's:$:" +:' * * package art; * public static class Transform { * public Transform() { * } * public native long getValue(); * public long nonNativeValue() { * return 1337; * }; * } */ private static final byte[] DEX_BYTES = Base64.getDecoder() .decode( "ZGV4CjAzNQAIm/YHNPSI0ggIbrKz6Jg/IBYl2Kq0TXS8AwAAcAAAAHhWNBIAAAAAAAAAABADAAAQ" + "AAAAcAAAAAcAAACwAAAAAgAAAMwAAAAAAAAAAAAAAAQAAADkAAAAAQAAAAQBAACYAgAAJAEAAGAB" + "AABoAQAAawEAAIUBAACVAQAAuQEAANkBAADtAQAA/AEAAAcCAAAKAgAAFwIAACECAAAnAgAANwIA" + "AD4CAAABAAAAAgAAAAMAAAAEAAAABQAAAAYAAAAJAAAAAQAAAAAAAAAAAAAACQAAAAYAAAAAAAAA" + "AQABAAAAAAABAAAACwAAAAEAAAANAAAABQABAAAAAAABAAAAAQAAAAUAAAAAAAAABwAAAAADAADb" + "AgAAAAAAAAMAAQAAAAAAVAEAAAMAAAAWADkFEAAAAAEAAQABAAAAWAEAAAQAAABwEAMAAAAOAA0A" + "DgAJAA48AAAAAAY8aW5pdD4AAUoAGExhcnQvVGVzdDIwMzUkVHJhbnNmb3JtOwAOTGFydC9UZXN0" + "MjAzNTsAIkxkYWx2aWsvYW5ub3RhdGlvbi9FbmNsb3NpbmdDbGFzczsAHkxkYWx2aWsvYW5ub3Rh" + "dGlvbi9Jbm5lckNsYXNzOwASTGphdmEvbGFuZy9PYmplY3Q7AA1UZXN0MjAzNS5qYXZhAAlUcmFu" + "c2Zvcm0AAVYAC2FjY2Vzc0ZsYWdzAAhnZXRWYWx1ZQAEbmFtZQAObm9uTmF0aXZlVmFsdWUABXZh" + "bHVlAIsBfn5EOHsiY29tcGlsYXRpb24tbW9kZSI6ImRlYnVnIiwiaGFzLWNoZWNrc3VtcyI6ZmFs" + "c2UsIm1pbi1hcGkiOjEsInNoYS0xIjoiOGNkYTg3OGE1MjJiMjJkMWQ2YTljNGQ0MjY5M2Y0OTAw" + "MjJmZTQ2YiIsInZlcnNpb24iOiIyLjIuMS1kZXYifQACAwEOGAICBAIKBAkMFwgAAAECAIGABLwC" + "AYECAAEBpAIAAAAAAAAAAgAAAMwCAADSAgAA9AIAAAAAAAAAAAAAAAAAAA4AAAAAAAAAAQAAAAAA" + "AAABAAAAEAAAAHAAAAACAAAABwAAALAAAAADAAAAAgAAAMwAAAAFAAAABAAAAOQAAAAGAAAAAQAA" + "AAQBAAABIAAAAgAAACQBAAADIAAAAgAAAFQBAAACIAAAEAAAAGABAAAEIAAAAgAAAMwCAAAAIAAA" + "AQAAANsCAAADEAAAAgAAAPACAAAGIAAAAQAAAAADAAAAEAAAAQAAABADAAA="); public static void run() throws Exception { Redefinition.setTestConfiguration(Redefinition.Config.COMMON_REDEFINE); doTest(); } public static void doTest() throws Exception { LinkClassMethods(Transform.class); Transform t = new Transform(); System.out.println("value is " + t.getValue()); Redefinition.doCommonStructuralClassRedefinition(Transform.class, DEX_BYTES); System.out.println("value is " + t.getValue()); System.out.println( "non-native value is " + Transform.class.getDeclaredMethod("nonNativeValue").invoke(t)); } public static native void LinkClassMethods(Class k); }