Andreas Gampe | 84a7903 | 2015-09-21 11:25:10 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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.lang.reflect.Constructor; |
| 18 | import java.lang.reflect.Field; |
| 19 | |
| 20 | /** |
| 21 | * PathClassLoader test. |
| 22 | */ |
| 23 | public class Main { |
| 24 | |
| 25 | private static ClassLoader createClassLoader(String dexPath, ClassLoader parent) { |
| 26 | try { |
| 27 | Class<?> myClassLoaderClass = Class.forName("MyPathClassLoader"); |
Andreas Gampe | 166aaee | 2016-07-18 08:27:23 -0700 | [diff] [blame] | 28 | Constructor<?> constructor = myClassLoaderClass.getConstructor(String.class, |
| 29 | ClassLoader.class); |
Andreas Gampe | 84a7903 | 2015-09-21 11:25:10 -0700 | [diff] [blame] | 30 | return (ClassLoader)constructor.newInstance(dexPath, parent); |
| 31 | } catch (Exception e) { |
| 32 | // Ups, not available?!?! |
| 33 | throw new RuntimeException(e); |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Main entry point. |
| 39 | */ |
| 40 | public static void main(String[] args) throws Exception { |
| 41 | // Check the class-path for the second file. We'll use that one as the source of the |
| 42 | // new classloader. |
| 43 | String cp = System.getProperty("java.class.path"); |
| 44 | if (cp.split(System.getProperty("path.separator")).length != 1) { |
| 45 | throw new IllegalStateException("Didn't find exactly one classpath element in " + cp); |
| 46 | } |
| 47 | if (!cp.endsWith("classloader2.jar")) { |
| 48 | throw new IllegalStateException("Don't understand classpath " + cp); |
| 49 | } |
| 50 | cp = cp.replace("classloader2.jar", "classloader2-ex.jar"); |
| 51 | |
| 52 | ClassLoader myClassLoader = createClassLoader( |
| 53 | cp, ClassLoader.getSystemClassLoader().getParent()); |
| 54 | |
| 55 | // Now load our test class. |
| 56 | Class<?> srcClass = A.class; |
| 57 | Class<?> exClass = myClassLoader.loadClass("A"); |
| 58 | |
| 59 | // First check: classes should be different. |
| 60 | if (srcClass == exClass) { |
| 61 | throw new IllegalStateException("Loaded class instances are the same"); |
| 62 | } |
| 63 | |
| 64 | // Secondary checks: get the static field values and make sure they aren't the same. |
| 65 | String srcValue = (String)srcClass.getDeclaredField("value").get(null); |
| 66 | if (!"Src-A".equals(srcValue)) { |
| 67 | throw new IllegalStateException("Expected Src-A, found " + srcValue); |
| 68 | } |
| 69 | String exValue = (String)exClass.getDeclaredField("value").get(null); |
| 70 | if (!"Ex-A".equals(exValue)) { |
| 71 | throw new IllegalStateException("Expected Ex-A, found " + exValue); |
| 72 | } |
| 73 | |
Jeff Hao | c92a7a1 | 2016-06-06 11:09:20 -0700 | [diff] [blame] | 74 | // Try to load a dex file with bad dex code. Use new instance to force verification. |
| 75 | try { |
| 76 | Class<?> badClass = Main.class.getClassLoader().loadClass("B"); |
Vladimir Marko | 72ab684 | 2017-01-20 19:32:50 +0000 | [diff] [blame] | 77 | System.out.println("Loaded class B."); |
Jeff Hao | c92a7a1 | 2016-06-06 11:09:20 -0700 | [diff] [blame] | 78 | badClass.newInstance(); |
Vladimir Marko | 72ab684 | 2017-01-20 19:32:50 +0000 | [diff] [blame] | 79 | System.out.println("Should not be able to instantiate B with bad dex bytecode."); |
Jeff Hao | c92a7a1 | 2016-06-06 11:09:20 -0700 | [diff] [blame] | 80 | } catch (VerifyError e) { |
Vladimir Marko | 72ab684 | 2017-01-20 19:32:50 +0000 | [diff] [blame] | 81 | System.out.println("Caught VerifyError."); |
Jeff Hao | c92a7a1 | 2016-06-06 11:09:20 -0700 | [diff] [blame] | 82 | } |
| 83 | |
| 84 | // Make sure the same error is rethrown when reloading the bad class. |
| 85 | try { |
| 86 | Class<?> badClass = Main.class.getClassLoader().loadClass("B"); |
Vladimir Marko | 72ab684 | 2017-01-20 19:32:50 +0000 | [diff] [blame] | 87 | System.out.println("Loaded class B."); |
| 88 | badClass.newInstance(); |
| 89 | System.out.println("Should not be able to instantiate B with bad dex bytecode."); |
| 90 | } catch (NoClassDefFoundError e) { |
| 91 | if (e.getCause() instanceof VerifyError) { |
| 92 | System.out.println("Caught wrapped VerifyError."); |
| 93 | } else { |
| 94 | e.printStackTrace(); |
| 95 | } |
Jeff Hao | c92a7a1 | 2016-06-06 11:09:20 -0700 | [diff] [blame] | 96 | } |
| 97 | |
Andreas Gampe | 84a7903 | 2015-09-21 11:25:10 -0700 | [diff] [blame] | 98 | System.out.println("Everything OK."); |
| 99 | } |
| 100 | } |