content: /*
   * Copyright (C) 2016 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 static art.Redefinition.addCommonTransformationResult;
  import static art.Redefinition.enableCommonRetransformation;
  import static art.Redefinition.setPopRetransformations;
  
  import java.lang.reflect.*;
  import java.util.Base64;
  
  class Main {
    public static String TEST_NAME = "934-load-transform";
  
    /**
     * base64 encoded class/dex file for
     * class Transform {
     *   public void sayHi() {
     *    System.out.println("Goodbye");
     *   }
     * }
     */
    private static final byte[] CLASS_BYTES = Base64.getDecoder().decode(
      "yv66vgAAADQAHAoABgAOCQAPABAIABEKABIAEwcAFAcAFQEABjxpbml0PgEAAygpVgEABENvZGUB" +
      "AA9MaW5lTnVtYmVyVGFibGUBAAVzYXlIaQEAClNvdXJjZUZpbGUBAA5UcmFuc2Zvcm0uamF2YQwA" +
      "BwAIBwAWDAAXABgBAAdHb29kYnllBwAZDAAaABsBAAlUcmFuc2Zvcm0BABBqYXZhL2xhbmcvT2Jq" +
      "ZWN0AQAQamF2YS9sYW5nL1N5c3RlbQEAA291dAEAFUxqYXZhL2lvL1ByaW50U3RyZWFtOwEAE2ph" +
      "dmEvaW8vUHJpbnRTdHJlYW0BAAdwcmludGxuAQAVKExqYXZhL2xhbmcvU3RyaW5nOylWACAABQAG" +
      "AAAAAAACAAAABwAIAAEACQAAAB0AAQABAAAABSq3AAGxAAAAAQAKAAAABgABAAAAEQABAAsACAAB" +
      "AAkAAAAlAAIAAQAAAAmyAAISA7YABLEAAAABAAoAAAAKAAIAAAATAAgAFAABAAwAAAACAA0=");
    private static final byte[] DEX_BYTES = Base64.getDecoder().decode(
      "ZGV4CjAzNQCLXSBQ5FiS3f16krSYZFF8xYZtFVp0GRXMAgAAcAAAAHhWNBIAAAAAAAAAACwCAAAO" +
      "AAAAcAAAAAYAAACoAAAAAgAAAMAAAAABAAAA2AAAAAQAAADgAAAAAQAAAAABAACsAQAAIAEAAGIB" +
      "AABqAQAAcwEAAIABAACXAQAAqwEAAL8BAADTAQAA4wEAAOYBAADqAQAA/gEAAAMCAAAMAgAAAgAA" +
      "AAMAAAAEAAAABQAAAAYAAAAIAAAACAAAAAUAAAAAAAAACQAAAAUAAABcAQAABAABAAsAAAAAAAAA" +
      "AAAAAAAAAAANAAAAAQABAAwAAAACAAAAAAAAAAAAAAAAAAAAAgAAAAAAAAAHAAAAAAAAAB4CAAAA" +
      "AAAAAQABAAEAAAATAgAABAAAAHAQAwAAAA4AAwABAAIAAAAYAgAACQAAAGIAAAAbAQEAAABuIAIA" +
      "EAAOAAAAAQAAAAMABjxpbml0PgAHR29vZGJ5ZQALTFRyYW5zZm9ybTsAFUxqYXZhL2lvL1ByaW50" +
      "U3RyZWFtOwASTGphdmEvbGFuZy9PYmplY3Q7ABJMamF2YS9sYW5nL1N0cmluZzsAEkxqYXZhL2xh" +
      "bmcvU3lzdGVtOwAOVHJhbnNmb3JtLmphdmEAAVYAAlZMABJlbWl0dGVyOiBqYWNrLTMuMzYAA291" +
      "dAAHcHJpbnRsbgAFc2F5SGkAEQAHDgATAAcOhQAAAAEBAICABKACAQG4Ag0AAAAAAAAAAQAAAAAA" +
      "AAABAAAADgAAAHAAAAACAAAABgAAAKgAAAADAAAAAgAAAMAAAAAEAAAAAQAAANgAAAAFAAAABAAA" +
      "AOAAAAAGAAAAAQAAAAABAAABIAAAAgAAACABAAABEAAAAQAAAFwBAAACIAAADgAAAGIBAAADIAAA" +
      "AgAAABMCAAAAIAAAAQAAAB4CAAAAEAAAAQAAACwCAAA=");
  
    public static ClassLoader getClassLoaderFor(String location) throws Exception {
      try {
        Class<?> class_loader_class = Class.forName("dalvik.system.PathClassLoader");
        Constructor<?> ctor = class_loader_class.getConstructor(String.class, ClassLoader.class);
        /* on Dalvik, this is a DexFile; otherwise, it's null */
        return (ClassLoader)ctor.newInstance(location + "/" + TEST_NAME + "-ex.jar",
                                             Main.class.getClassLoader());
      } catch (ClassNotFoundException e) {
        // Running on RI. Use URLClassLoader.
        return new java.net.URLClassLoader(
            new java.net.URL[] { new java.net.URL("file://" + location + "/classes-ex/") });
      }
    }
  
    public static void main(String[] args) {
      // Don't pop transformations. Make sure that even if 2 threads race to define the class both
      // will get the same result.
      setPopRetransformations(false);
      addCommonTransformationResult("Transform", CLASS_BYTES, DEX_BYTES);
      enableCommonRetransformation(true);
      try {
        /* this is the "alternate" DEX/Jar file */
        ClassLoader new_loader = getClassLoaderFor(System.getenv("DEX_LOCATION"));
        Class<?> klass = (Class<?>)new_loader.loadClass("TestMain");
        if (klass == null) {
          throw new AssertionError("loadClass failed");
        }
        Method run_test = klass.getMethod("runTest");
        run_test.invoke(null);
      } catch (Exception e) {
        System.out.println(e.toString());
        e.printStackTrace();
      }
    }
  }
  