| /* |
| * Copyright (C) 2021 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. |
| */ |
| |
| import dalvik.system.PathClassLoader; |
| import java.io.File; |
| import java.lang.reflect.Method; |
| import java.nio.file.Files; |
| import java.util.Arrays; |
| |
| public class Main { |
| |
| public static void main(String[] args) throws Exception { |
| System.loadLibrary(args[0]); |
| |
| // Enable hidden API checks in case they are disabled by default. |
| init(); |
| |
| // Put the classes with hiddenapi bits in the boot classpath. |
| appendToBootClassLoader(DEX_PARENT_BOOT, /* isCorePlatform */ false); |
| |
| // Create a new class loader so the TestCase class sees the InheritAbstract classes in the boot |
| // classpath. |
| ClassLoader childLoader = new PathClassLoader(DEX_CHILD, Object.class.getClassLoader()); |
| Class<?> cls = Class.forName("TestCase", true, childLoader); |
| Method m = cls.getDeclaredMethod("test"); |
| m.invoke(null); |
| |
| // Create a new native library which 'childLoader' can load. |
| String absoluteLibraryPath = getNativeLibFileName(args[0]); |
| |
| // Do the test for JNI code. |
| m = cls.getDeclaredMethod("testNative", String.class); |
| m.invoke(null, createNativeLibCopy(absoluteLibraryPath)); |
| } |
| |
| // Tries to find the absolute path of the native library whose basename is 'arg'. |
| private static String getNativeLibFileName(String arg) throws Exception { |
| String libName = System.mapLibraryName(arg); |
| Method libPathsMethod = Runtime.class.getDeclaredMethod("getLibPaths"); |
| libPathsMethod.setAccessible(true); |
| String[] libPaths = (String[]) libPathsMethod.invoke(Runtime.getRuntime()); |
| String nativeLibFileName = null; |
| for (String p : libPaths) { |
| String candidate = p + libName; |
| if (new File(candidate).exists()) { |
| nativeLibFileName = candidate; |
| break; |
| } |
| } |
| if (nativeLibFileName == null) { |
| throw new IllegalStateException("Didn't find " + libName + " in " + |
| Arrays.toString(libPaths)); |
| } |
| return nativeLibFileName; |
| } |
| |
| // Copy native library to a new file with a unique name so it does not |
| // conflict with other loaded instance of the same binary file. |
| private static String createNativeLibCopy(String nativeLibFileName) throws Exception { |
| String tempFileName = System.mapLibraryName("hiddenapitest"); |
| File tempFile = new File(System.getenv("DEX_LOCATION"), tempFileName); |
| Files.copy(new File(nativeLibFileName).toPath(), tempFile.toPath()); |
| return tempFile.getAbsolutePath(); |
| } |
| |
| private static final String DEX_PARENT_BOOT = |
| new File(new File(System.getenv("DEX_LOCATION"), "res"), "boot.jar").getAbsolutePath(); |
| private static final String DEX_CHILD = |
| new File(System.getenv("DEX_LOCATION"), "817-hiddenapi-ex.jar").getAbsolutePath(); |
| |
| private static native int appendToBootClassLoader(String dexPath, boolean isCorePlatform); |
| private static native void init(); |
| } |