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1   //
2   //  ========================================================================
3   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
4   //  ------------------------------------------------------------------------
5   //  All rights reserved. This program and the accompanying materials
6   //  are made available under the terms of the Eclipse Public License v1.0
7   //  and Apache License v2.0 which accompanies this distribution.
8   //
9   //      The Eclipse Public License is available at
10  //      http://www.eclipse.org/legal/epl-v10.html
11  //
12  //      The Apache License v2.0 is available at
13  //      http://www.opensource.org/licenses/apache2.0.php
14  //
15  //  You may elect to redistribute this code under either of these licenses.
16  //  ========================================================================
17  //
18  
19  package com.acme;
20  
21  import java.io.BufferedWriter;
22  import java.io.File;
23  import java.io.IOException;
24  import java.io.InputStream;
25  import java.io.OutputStream;
26  import java.io.OutputStreamWriter;
27  import java.io.PrintWriter;
28  import java.io.Reader;
29  import java.lang.reflect.Array;
30  import java.lang.reflect.Field;
31  import java.net.URL;
32  import java.util.Collections;
33  import java.util.Date;
34  import java.util.Enumeration;
35  import java.util.Locale;
36  import java.util.Timer;
37  import java.util.TimerTask;
38  
39  import javax.servlet.AsyncContext;
40  import javax.servlet.AsyncEvent;
41  import javax.servlet.AsyncListener;
42  import javax.servlet.RequestDispatcher;
43  import javax.servlet.ServletConfig;
44  import javax.servlet.ServletContext;
45  import javax.servlet.ServletException;
46  import javax.servlet.ServletRequest;
47  import javax.servlet.ServletRequestWrapper;
48  import javax.servlet.ServletResponse;
49  import javax.servlet.ServletResponseWrapper;
50  import javax.servlet.UnavailableException;
51  import javax.servlet.http.Cookie;
52  import javax.servlet.http.HttpServlet;
53  import javax.servlet.http.HttpServletRequest;
54  import javax.servlet.http.HttpServletRequestWrapper;
55  import javax.servlet.http.HttpServletResponse;
56  import javax.servlet.http.HttpServletResponseWrapper;
57  
58  
59  /** 
60   * Dump Servlet Request.
61   */
62  @SuppressWarnings("serial")
63  public class Dump extends HttpServlet
64  {
65      boolean fixed;
66      Timer _timer;
67  
68      /* ------------------------------------------------------------ */
69      @Override
70      public void init(ServletConfig config) throws ServletException
71      {
72          super.init(config);
73  
74          if (config.getInitParameter("unavailable")!=null && !fixed)
75          {
76  
77              fixed=true;
78              throw new UnavailableException("Unavailable test",Integer.parseInt(config.getInitParameter("unavailable")));
79          }
80  
81          _timer=new Timer(true);
82      }
83  
84      /* ------------------------------------------------------------ */
85      @Override
86      public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
87      {
88          doGet(request, response);
89      }
90  
91      /* ------------------------------------------------------------ */
92      @Override
93      public void doPut(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
94      {
95          byte[] buffer = new byte[8192];
96          int len=request.getContentLength();
97          int c=0;
98          InputStream in=request.getInputStream();
99          while (c<len)
100         {
101             int l = in.read(buffer);
102             if (l<0)
103                 break;
104             c+=l;
105         }
106         request.setAttribute("PUT",c+"bytes");
107         doGet(request, response);
108     }
109 
110     /* ------------------------------------------------------------ */
111     @Override
112     public void doGet(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException
113     {
114         if (request.getRemoteUser()==null)
115         {
116             try
117             {
118                 request.login("user", "password");
119             }
120             catch(ServletException se)
121             {
122                 getServletContext().log(se.toString());
123             }
124         }
125 
126         // Handle a dump of data
127         final String data= request.getParameter("data");
128         final String chars= request.getParameter("chars");
129         final String block= request.getParameter("block");
130         final String dribble= request.getParameter("dribble");
131         final boolean flush= request.getParameter("flush")!=null?Boolean.parseBoolean(request.getParameter("flush")):false;
132 
133 
134         if(request.getPathInfo()!=null && request.getPathInfo().toLowerCase(Locale.ENGLISH).indexOf("script")!=-1)
135         {
136             response.sendRedirect(response.encodeRedirectURL(getServletContext().getContextPath() + "/dump/info"));
137             return;
138         }
139 
140         request.setCharacterEncoding("UTF-8");
141 
142         if (request.getParameter("busy")!=null)
143         {
144             long end = System.currentTimeMillis()+Long.parseLong(request.getParameter("busy"));
145             while(System.currentTimeMillis()<end)
146             {}
147         }
148 
149         if (request.getParameter("empty")!=null)
150         {
151             response.setStatus(200);
152             response.flushBuffer();
153             return;
154         }
155 
156         if (request.getParameter("sleep")!=null)
157         {
158             try
159             {
160                 long s = Long.parseLong(request.getParameter("sleep"));
161                 if (request.getHeader("Expect")!=null && request.getHeader("Expect").indexOf("102")>=0)
162                 {
163                     Thread.sleep(s/2);
164                     response.sendError(102);
165                     Thread.sleep(s/2);
166                 }
167                 else
168                     Thread.sleep(s);
169             }
170             catch (InterruptedException e)
171             {
172                 return;
173             }
174             catch (Exception e)
175             {
176                 throw new ServletException(e);
177             }
178         }
179 
180         if (request.getParameter("startAsync")!=null && request.getAttribute("ASYNC")!=Boolean.TRUE)
181         {
182             request.setAttribute("ASYNC",Boolean.TRUE);
183             try
184             {
185                 final AsyncContext async=request.startAsync(request,response);
186                 async.setTimeout(Long.parseLong(request.getParameter("startAsync")));
187                 async.addListener(new AsyncListener()
188                 {
189                     
190                     @Override
191                     public void onTimeout(AsyncEvent event) throws IOException
192                     {
193                         response.addHeader("Dump","onTimeout");
194                         try
195                         {
196                             if (!dump(response,data,chars,block,dribble,flush))
197                             {
198                                 response.setContentType("text/plain");
199                                 response.getOutputStream().println("EXPIRED");
200                             }
201                             async.complete();
202                         }
203                         catch (IOException e)
204                         {
205                             getServletContext().log("",e);
206                         }
207                     }
208                     
209                     @Override
210                     public void onStartAsync(AsyncEvent event) throws IOException
211                     {
212                         response.addHeader("Dump","onStartAsync");
213                     }
214                     
215                     @Override
216                     public void onError(AsyncEvent event) throws IOException
217                     {
218                         response.addHeader("Dump","onError");
219                     }
220                     
221                     @Override
222                     public void onComplete(AsyncEvent event) throws IOException
223                     {
224                         response.addHeader("Dump","onComplete");
225                     }
226                 });
227 
228                 if (request.getParameter("dispatch")!=null)
229                 {
230                     request.setAttribute("RESUME",Boolean.TRUE);
231 
232                     final long resume=Long.parseLong(request.getParameter("dispatch"));
233                     _timer.schedule(new TimerTask()
234                     {
235                         @Override
236                         public void run()
237                         {
238                             async.dispatch();
239                         }
240                     },resume);
241                 }
242 
243                 if (request.getParameter("complete")!=null)
244                 {
245                     final long complete=Long.parseLong(request.getParameter("complete"));
246                     _timer.schedule(new TimerTask()
247                     {
248                         @Override
249                         public void run()
250                         {
251                             try
252                             {
253                                 response.setContentType("text/html");
254                                 response.getOutputStream().println("<h1>COMPLETED</h1>");
255                                 async.complete();
256                             }
257                             catch(Exception e)
258                             {
259                                 e.printStackTrace();
260                             }
261                         }
262                     },complete);
263                 }
264 
265                 
266                 
267                 return;
268             }
269             catch(Exception e)
270             {
271                 throw new ServletException(e);
272             }
273         }
274 
275         request.setAttribute("Dump", this);
276         getServletContext().setAttribute("Dump",this);
277         // getServletContext().log("dump "+request.getRequestURI());
278 
279         // Force a content length response
280         String length= request.getParameter("length");
281         if (length != null && length.length() > 0)
282         {
283             response.setContentLength(Integer.parseInt(length));
284         }
285 
286         // Handle a dump of data
287         if (dump(response,data,chars,block,dribble,flush))
288             return;
289 
290         // handle an exception
291         String info= request.getPathInfo();
292         if (info != null && info.endsWith("Exception"))
293         {
294             try
295             {
296                 throw (Throwable) Thread.currentThread().getContextClassLoader().loadClass(info.substring(1)).newInstance();
297             }
298             catch (Throwable th)
299             {
300                 throw new ServletException(th);
301             }
302         }
303 
304         // test a reset
305         String reset= request.getParameter("reset");
306         if (reset != null && reset.length() > 0)
307         {
308             response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
309             response.setHeader("SHOULD_NOT","BE SEEN");
310             response.reset();
311         }
312 
313 
314         // handle an redirect
315         String redirect= request.getParameter("redirect");
316         if (redirect != null && redirect.length() > 0)
317         {
318             response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
319             response.sendRedirect(response.encodeRedirectURL(redirect));
320             try
321             {
322                 response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
323             }
324             catch(IOException e)
325             {
326                 // ignored as stream is closed.
327             }
328             return;
329         }
330 
331         // handle an error
332         String error= request.getParameter("error");
333         if (error != null && error.length() > 0 && request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE)==null)
334         {
335             response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
336             response.sendError(Integer.parseInt(error));
337             try
338             {
339                 response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
340             }
341             catch(IllegalStateException e)
342             {
343                 try
344                 {
345                     response.getWriter().println("NOR THIS!!");
346                 }
347                 catch(IOException e2){}
348             }
349             catch(IOException e){}
350             return;
351         }
352 
353         // Handle a extra headers
354         String headers= request.getParameter("headers");
355         if (headers != null && headers.length() > 0)
356         {
357             long h=Long.parseLong(headers);
358             for (int i=0;i<h;i++)
359                 response.addHeader("Header"+i,"Value"+i);
360         }
361 
362         String buffer= request.getParameter("buffer");
363         if (buffer != null && buffer.length() > 0)
364             response.setBufferSize(Integer.parseInt(buffer));
365 
366         String charset= request.getParameter("charset");
367         if (charset==null)
368             charset="UTF-8";
369         response.setCharacterEncoding(charset);
370         response.setContentType("text/html");
371 
372         if (info != null && info.indexOf("Locale/") >= 0)
373         {
374             try
375             {
376                 String locale_name= info.substring(info.indexOf("Locale/") + 7);
377                 Field f= java.util.Locale.class.getField(locale_name);
378                 response.setLocale((Locale)f.get(null));
379             }
380             catch (Exception e)
381             {
382                 e.printStackTrace();
383                 response.setLocale(Locale.getDefault());
384             }
385         }
386 
387         String cn= request.getParameter("cookie");
388         String cv=request.getParameter("cookiev");
389         if (cn!=null && cv!=null)
390         {
391             Cookie cookie= new Cookie(cn, cv);
392             if (request.getParameter("version")!=null)
393                 cookie.setVersion(Integer.parseInt(request.getParameter("version")));
394             cookie.setComment("Cookie from dump servlet");
395             response.addCookie(cookie);
396         }
397 
398         String pi= request.getPathInfo();
399         if (pi != null && pi.startsWith("/ex"))
400         {
401             OutputStream out= response.getOutputStream();
402             out.write("</H1>This text should be reset</H1>".getBytes());
403             if ("/ex0".equals(pi))
404                 throw new ServletException("test ex0", new Throwable());
405             else if ("/ex1".equals(pi))
406                 throw new IOException("test ex1");
407             else if ("/ex2".equals(pi))
408                 throw new UnavailableException("test ex2");
409             else if (pi.startsWith("/ex3/"))
410                 throw new UnavailableException("test ex3",Integer.parseInt(pi.substring(5)));
411             throw new RuntimeException("test");
412         }
413 
414         if ("true".equals(request.getParameter("close")))
415             response.setHeader("Connection","close");
416 
417         String buffered= request.getParameter("buffered");
418 
419         PrintWriter pout=null;
420 
421         try
422         {
423             pout =response.getWriter();
424         }
425         catch(IllegalStateException e)
426         {
427             pout=new PrintWriter(new OutputStreamWriter(response.getOutputStream(),charset));
428         }
429         if (buffered!=null)
430             pout = new PrintWriter(new BufferedWriter(pout,Integer.parseInt(buffered)));
431 
432         try
433         {
434             pout.write("<html>\n<body>\n");
435             pout.write("<h1>Dump Servlet</h1>\n");
436             pout.write("<table width=\"95%\">");
437             pout.write("<tr>\n");
438             pout.write("<th align=\"right\">getContentLength:&nbsp;</th>");
439             pout.write("<td>"+Integer.toString(request.getContentLength())+"</td>");
440             pout.write("</tr><tr>\n");
441             pout.write("<th align=\"right\">getContentType:&nbsp;</th>");
442             pout.write("<td>"+notag(request.getContentType())+"</td>");
443             pout.write("</tr><tr>\n");
444             pout.write("<th align=\"right\">getContextPath:&nbsp;</th>");
445             pout.write("<td>"+request.getContextPath()+"</td>");
446             pout.write("</tr><tr>\n");
447             pout.write("<th align=\"right\">getDispatcherType:&nbsp;</th>");
448             pout.write("<td>"+request.getDispatcherType()+"</td>");
449             pout.write("</tr><tr>\n");
450             pout.write("<th align=\"right\">getLocale:&nbsp;</th>");
451             pout.write("<td>"+request.getLocale()+"</td>");
452             pout.write("</tr><tr>\n");
453             pout.write("<th align=\"right\">getLocalName:&nbsp;</th>");
454             pout.write("<td>"+request.getLocalName()+"</td>");
455             pout.write("</tr><tr>\n");
456             pout.write("<th align=\"right\">getLocalAddr:&nbsp;</th>");
457             pout.write("<td>"+request.getLocalAddr()+"</td>");
458             pout.write("</tr><tr>\n");
459             pout.write("<th align=\"right\">getLocalPort:&nbsp;</th>");
460             pout.write("<td>"+Integer.toString(request.getLocalPort())+"</td>");
461             pout.write("</tr><tr>\n");
462             pout.write("<th align=\"right\">getMethod:&nbsp;</th>");
463             pout.write("<td>" + notag(request.getMethod())+"</td>");
464             pout.write("</tr><tr>\n");
465             pout.write("<th align=\"right\">getPathInfo:&nbsp;</th>");
466             pout.write("<td>"+notag(request.getPathInfo())+"</td>");
467             pout.write("</tr><tr>\n");
468             pout.write("<th align=\"right\">getPathTranslated:&nbsp;</th>");
469             pout.write("<td>"+notag(request.getPathTranslated())+"</td>");
470             pout.write("</tr><tr>\n");
471             pout.write("<th align=\"right\">getProtocol:&nbsp;</th>");
472             pout.write("<td>"+request.getProtocol()+"</td>");
473             pout.write("</tr><tr>\n");
474             pout.write("<th align=\"right\">getQueryString:&nbsp;</th>");
475             pout.write("<td>"+notag(request.getQueryString())+"</td>");
476             pout.write("</tr><tr>\n");
477             pout.write("<th align=\"right\">getRemoteAddr:&nbsp;</th>");
478             pout.write("<td>"+request.getRemoteAddr()+"</td>");
479             pout.write("</tr><tr>\n");
480             pout.write("<th align=\"right\">getRemoteHost:&nbsp;</th>");
481             pout.write("<td>"+request.getRemoteHost()+"</td>");
482             pout.write("</tr><tr>\n");
483             pout.write("<th align=\"right\">getRemotePort:&nbsp;</th>");
484             pout.write("<td>"+request.getRemotePort()+"</td>");
485             pout.write("</tr><tr>\n");
486             pout.write("<th align=\"right\">getRemoteUser:&nbsp;</th>");
487             pout.write("<td>"+request.getRemoteUser()+"</td>");
488             pout.write("</tr><tr>\n");
489             pout.write("<th align=\"right\">getRequestedSessionId:&nbsp;</th>");
490             pout.write("<td>"+request.getRequestedSessionId()+"</td>");
491             pout.write("</tr><tr>\n");
492             pout.write("<th align=\"right\">getRequestURI:&nbsp;</th>");
493             pout.write("<td>"+notag(request.getRequestURI())+"</td>");
494             pout.write("</tr><tr>\n");
495             pout.write("<th align=\"right\">getRequestURL:&nbsp;</th>");
496             pout.write("<td>"+notag(request.getRequestURL().toString())+"</td>");
497             pout.write("</tr><tr>\n");
498             pout.write("<th align=\"right\">getScheme:&nbsp;</th>");
499             pout.write("<td>"+request.getScheme()+"</td>");
500             pout.write("</tr><tr>\n");
501             pout.write("<th align=\"right\">getServerName:&nbsp;</th>");
502             pout.write("<td>"+notag(request.getServerName())+"</td>");
503             pout.write("</tr><tr>\n");
504             pout.write("<th align=\"right\">getServletPath:&nbsp;</th>");
505             pout.write("<td>"+notag(request.getServletPath())+"</td>");
506             pout.write("</tr><tr>\n");
507             pout.write("<th align=\"right\">getServerPort:&nbsp;</th>");
508             pout.write("<td>"+Integer.toString(request.getServerPort())+"</td>");
509             pout.write("</tr><tr>\n");
510             pout.write("<th align=\"right\">getUserPrincipal:&nbsp;</th>");
511             pout.write("<td>"+request.getUserPrincipal()+"</td>");
512             pout.write("</tr><tr>\n");
513             pout.write("<th align=\"right\">isAsyncStarted():&nbsp;</th>");
514             pout.write("<td>"+request.isAsyncStarted()+"</td>");
515             pout.write("</tr><tr>\n");
516             pout.write("<th align=\"right\">isAsyncSupported():&nbsp;</th>");
517             pout.write("<td>"+request.isAsyncSupported()+"</td>");
518             pout.write("</tr><tr>\n");
519             pout.write("<th align=\"right\">isSecure():&nbsp;</th>");
520             pout.write("<td>"+request.isSecure()+"</td>");
521             pout.write("</tr><tr>\n");
522             pout.write("<th align=\"right\">isUserInRole(admin):&nbsp;</th>");
523             pout.write("<td>"+request.isUserInRole("admin")+"</td>");
524             pout.write("</tr><tr>\n");
525             pout.write("<th align=\"right\">encodeRedirectURL(/foo?bar):&nbsp;</th>");
526             pout.write("<td>"+response.encodeRedirectURL("/foo?bar")+"</td>");
527 
528 
529             Enumeration<Locale> locales= request.getLocales();
530             while (locales.hasMoreElements())
531             {
532                 pout.write("</tr><tr>\n");
533                 pout.write("<th align=\"right\">getLocales:&nbsp;</th>");
534                 pout.write("<td>"+locales.nextElement()+"</td>");
535             }
536             pout.write("</tr><tr>\n");
537 
538             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Other HTTP Headers:</big></th>");
539             Enumeration<String> h= request.getHeaderNames();
540             String name;
541             while (h.hasMoreElements())
542             {
543                 name= (String)h.nextElement();
544 
545                 Enumeration<String> h2= request.getHeaders(name);
546                 while (h2.hasMoreElements())
547                 {
548                     String hv= (String)h2.nextElement();
549                     pout.write("</tr><tr>\n");
550                     pout.write("<th align=\"right\">"+notag(name)+":&nbsp;</th>");
551                     pout.write("<td>"+notag(hv)+"</td>");
552                 }
553             }
554 
555             pout.write("</tr><tr>\n");
556             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Request Parameters:</big></th>");
557             h= request.getParameterNames();
558             while (h.hasMoreElements())
559             {
560                 name= (String)h.nextElement();
561                 pout.write("</tr><tr>\n");
562                 pout.write("<th align=\"right\">"+notag(name)+":&nbsp;</th>");
563                 pout.write("<td>"+notag(request.getParameter(name))+"</td>");
564                 String[] values= request.getParameterValues(name);
565                 if (values == null)
566                 {
567                     pout.write("</tr><tr>\n");
568                     pout.write("<th align=\"right\">"+notag(name)+" Values:&nbsp;</th>");
569                     pout.write("<td>"+"NULL!"+"</td>");
570                 }
571                 else if (values.length > 1)
572                 {
573                     for (int i= 0; i < values.length; i++)
574                     {
575                         pout.write("</tr><tr>\n");
576                         pout.write("<th align=\"right\">"+notag(name)+"["+i+"]:&nbsp;</th>");
577                         pout.write("<td>"+notag(values[i])+"</td>");
578                     }
579                 }
580             }
581 
582             pout.write("</tr><tr>\n");
583             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Cookies:</big></th>");
584             Cookie[] cookies = request.getCookies();
585             for (int i=0; cookies!=null && i<cookies.length;i++)
586             {
587                 Cookie cookie = cookies[i];
588 
589                 pout.write("</tr><tr>\n");
590                 pout.write("<th align=\"right\">"+notag(cookie.getName())+":&nbsp;</th>");
591                 pout.write("<td>"+notag(cookie.getValue())+"</td>");
592             }
593 
594             String content_type=request.getContentType();
595             if (content_type!=null &&
596                 !content_type.startsWith("application/x-www-form-urlencoded") &&
597                 !content_type.startsWith("multipart/form-data"))
598             {
599                 pout.write("</tr><tr>\n");
600                 pout.write("<th align=\"left\" valign=\"top\" colspan=\"2\"><big><br/>Content:</big></th>");
601                 pout.write("</tr><tr>\n");
602                 pout.write("<td><pre>");
603                 char[] content= new char[4096];
604                 int len;
605                 try{
606                     Reader in=request.getReader();
607 
608                     while((len=in.read(content))>=0)
609                         pout.write(notag(new String(content,0,len)));
610                 }
611                 catch(IOException e)
612                 {
613                     pout.write(e.toString());
614                 }
615 
616                 pout.write("</pre></td>");
617             }
618 
619             pout.write("</tr><tr>\n");
620             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Request Attributes:</big></th>");
621             Enumeration<String> a= request.getAttributeNames();
622             while (a.hasMoreElements())
623             {
624                 name= (String)a.nextElement();
625                 pout.write("</tr><tr>\n");
626                 pout.write("<th align=\"right\" valign=\"top\">"+name.replace("."," .")+":&nbsp;</th>");
627                 Object value=request.getAttribute(name);
628                 if (value instanceof File)
629                 {
630                     File file = (File)value;
631                     pout.write("<td>"+"<pre>" + file.getName()+" ("+file.length()+" "+new Date(file.lastModified())+ ")</pre>"+"</td>");
632                 }
633                 else
634                     pout.write("<td>"+"<pre>" + toString(request.getAttribute(name)) + "</pre>"+"</td>");
635             }
636             request.setAttribute("org.eclipse.jetty.servlet.MultiPartFilter.files",null);
637 
638 
639             pout.write("</tr><tr>\n");
640             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Servlet InitParameters:</big></th>");
641             a= getInitParameterNames();
642             while (a.hasMoreElements())
643             {
644                 name= (String)a.nextElement();
645                 pout.write("</tr><tr>\n");
646                 pout.write("<th align=\"right\">"+name+":&nbsp;</th>");
647                 pout.write("<td>"+ toString(getInitParameter(name)) +"</td>");
648             }
649 
650             pout.write("</tr><tr>\n");
651             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Context InitParameters:</big></th>");
652             a= getServletContext().getInitParameterNames();
653             while (a.hasMoreElements())
654             {
655                 name= (String)a.nextElement();
656                 pout.write("</tr><tr>\n");
657                 pout.write("<th align=\"right\" valign=\"top\">"+name.replace("."," .")+":&nbsp;</th>");
658                 pout.write("<td>"+ toString(getServletContext().getInitParameter(name)) + "</td>");
659             }
660 
661             pout.write("</tr><tr>\n");
662             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Context Attributes:</big></th>");
663             a= getServletContext().getAttributeNames();
664             while (a.hasMoreElements())
665             {
666                 name= (String)a.nextElement();
667                 pout.write("</tr><tr>\n");
668                 pout.write("<th align=\"right\" valign=\"top\">"+name.replace("."," .")+":&nbsp;</th>");
669                 pout.write("<td>"+"<pre>" + toString(getServletContext().getAttribute(name)) + "</pre>"+"</td>");
670             }
671 
672             String res= request.getParameter("resource");
673             if (res != null && res.length() > 0)
674             {
675                 pout.write("</tr><tr>\n");
676                 pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Get Resource: \""+res+"\"</big></th>");
677 
678                 pout.write("</tr><tr>\n");
679                 pout.write("<th align=\"right\">getServletContext().getResource(...):&nbsp;</th>");
680                 try{pout.write("<td>"+getServletContext().getResource(res)+"</td>");}
681                 catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
682 
683                 pout.write("</tr><tr>\n");
684                 pout.write("<th align=\"right\">getServletContext().getResourcePaths(...):&nbsp;</th>");
685                 try{pout.write("<td>"+getServletContext().getResourcePaths(res)+"</td>");}
686                 catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
687 
688                 pout.write("</tr><tr>\n");
689                 pout.write("<th align=\"right\">getServletContext().getRealPath(...):&nbsp;</th>");
690                 try{pout.write("<td>"+getServletContext().getRealPath(res)+"</td>");}
691                 catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
692 
693                 pout.write("</tr><tr>\n");
694                 pout.write("<th align=\"right\">getServletContext().getContext(...):&nbsp;</th>");
695 
696                 ServletContext context = getServletContext().getContext(res);
697                 pout.write("<td>"+context+"</td>");
698 
699                 if (context!=null)
700                 {
701                     pout.write("</tr><tr>\n");
702                     pout.write("<th align=\"right\">getServletContext().getContext(...).getResource(...):&nbsp;</th>");
703                     try{pout.write("<td>"+context.getResource(res)+"</td>");}
704                     catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
705 
706                     pout.write("</tr><tr>\n");
707                     pout.write("<th align=\"right\">getServletContext().getContext(...).getResourcePaths(...):&nbsp;</th>");
708                     try{pout.write("<td>"+context.getResourcePaths(res)+"</td>");}
709                     catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
710 
711                     String cp=context.getContextPath();
712                     if (cp==null || "/".equals(cp))
713                         cp="";
714                     pout.write("</tr><tr>\n");
715                     pout.write("<th align=\"right\">getServletContext().getContext(...).getRequestDispatcher(...):&nbsp;</th>");
716                     pout.write("<td>"+context.getRequestDispatcher(res.substring(cp.length()))+"</td>");
717                     
718                     pout.write("</tr><tr>\n");
719                     pout.write("<th align=\"right\">getServletContext().getContext(...).getRealPath(...):&nbsp;</th>");
720                     pout.write("<td>"+context.getRealPath(res.substring(cp.length()))+"</td>");
721                 }
722 
723                 pout.write("</tr><tr>\n");
724                 pout.write("<th align=\"right\">this.getClass().getResource(...):&nbsp;</th>");
725                 pout.write("<td>"+this.getClass().getResource(res)+"</td>");
726 
727                 pout.write("</tr><tr>\n");
728                 pout.write("<th align=\"right\">this.getClass().getClassLoader().getResource(...):&nbsp;</th>");
729                 pout.write("<td>"+this.getClass().getClassLoader().getResource(res)+"</td>");
730 
731                 pout.write("</tr><tr>\n");
732                 pout.write("<th align=\"right\">Thread.currentThread().getContextClassLoader().getResource(...):&nbsp;</th>");
733                 pout.write("<td>"+Thread.currentThread().getContextClassLoader().getResource(res)+"</td>");
734                 pout.write("</tr><tr>\n");
735                 pout.write("<th align=\"right\">Thread.currentThread().getContextClassLoader().getResources(...):&nbsp;</th>");
736                 Enumeration<URL> urls = Thread.currentThread().getContextClassLoader().getResources(res);
737                 if (urls==null)
738                     pout.write("<td>null</td>");
739                 else
740                     pout.write("<td>"+Collections.list(urls)+"</td>");
741 
742             }
743 
744             pout.write("</tr></table>\n");
745 
746             /* ------------------------------------------------------------ */
747             pout.write("<h2>Request Wrappers</h2>\n");
748             ServletRequest rw=request;
749             int w=0;
750             while (rw !=null)
751             {
752                 pout.write((w++)+": "+rw.getClass().getName()+"<br/>");
753                 if (rw instanceof HttpServletRequestWrapper)
754                     rw=((HttpServletRequestWrapper)rw).getRequest();
755                 else if (rw instanceof ServletRequestWrapper)
756                     rw=((ServletRequestWrapper)rw).getRequest();
757                 else
758                     rw=null;
759             }
760 
761             /* ------------------------------------------------------------ */
762             pout.write("<h2>Response Wrappers</h2>\n");
763             ServletResponse rsw=response;
764             w=0;
765             while (rsw !=null)
766             {
767                 pout.write((w++)+": "+rsw.getClass().getName()+"<br/>");
768                 if (rsw instanceof HttpServletResponseWrapper)
769                     rsw=((HttpServletResponseWrapper)rsw).getResponse();
770                 else if (rsw instanceof ServletResponseWrapper)
771                     rsw=((ServletResponseWrapper)rsw).getResponse();
772                 else
773                     rsw=null;
774             }
775 
776             pout.write("<br/>");
777             pout.write("<h2>International Characters (UTF-8)</h2>");
778             pout.write("LATIN LETTER SMALL CAPITAL AE<br/>\n");
779             pout.write("Directly uni encoded(\\u1d01): \u1d01<br/>");
780             pout.write("HTML reference (&amp;AElig;): &AElig;<br/>");
781             pout.write("Decimal (&amp;#7425;): &#7425;<br/>");
782             pout.write("Javascript unicode (\\u1d01) : <script language='javascript'>document.write(\"\u1d01\");</script><br/>");
783             pout.write("<br/>");
784             pout.write("<h2>Form to generate GET content</h2>");
785             pout.write("<form method=\"GET\" action=\""+response.encodeURL(getURI(request))+"\">");
786             pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"value\"/><br/>\n");
787             pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\">");
788             pout.write("</form>");
789 
790             pout.write("<br/>");
791 
792             pout.write("<h2>Form to generate POST content</h2>");
793             pout.write("<form method=\"POST\" accept-charset=\"utf-8\" action=\""+response.encodeURL(getURI(request))+"\">");
794             pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"value\"/><br/>\n");
795             pout.write("Select: <select multiple name=\"Select\">\n");
796             pout.write("<option>ValueA</option>");
797             pout.write("<option>ValueB1,ValueB2</option>");
798             pout.write("<option>ValueC</option>");
799             pout.write("</select><br/>");
800             pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\"><br/>");
801             pout.write("</form>");
802             pout.write("<br/>");
803 
804             pout.write("<h2>Form to generate UPLOAD content</h2>");
805             pout.write("<form method=\"POST\" enctype=\"multipart/form-data\" accept-charset=\"utf-8\" action=\""+
806                     response.encodeURL(getURI(request))+(request.getQueryString()==null?"":("?"+request.getQueryString()))+
807                     "\">");
808             pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"comment\"/><br/>\n");
809             pout.write("File 1: <input type=\"file\" name=\"file1\" /><br/>\n");
810             pout.write("File 2: <input type=\"file\" name=\"file2\" /><br/>\n");
811             pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\"><br/>");
812             pout.write("</form>");
813 
814             pout.write("<h2>Form to set Cookie</h2>");
815             pout.write("<form method=\"POST\" action=\""+response.encodeURL(getURI(request))+"\">");
816             pout.write("cookie: <input type=\"text\" name=\"cookie\" /><br/>\n");
817             pout.write("value: <input type=\"text\" name=\"cookiev\" /><br/>\n");
818             pout.write("<input type=\"submit\" name=\"Action\" value=\"setCookie\">");
819             pout.write("</form>\n");
820 
821             pout.write("<h2>Form to get Resource</h2>");
822             pout.write("<form method=\"POST\" action=\""+response.encodeURL(getURI(request))+"\">");
823             pout.write("resource: <input type=\"text\" name=\"resource\" /><br/>\n");
824             pout.write("<input type=\"submit\" name=\"Action\" value=\"getResource\">");
825             pout.write("</form>\n");
826         }
827         catch (Exception e)
828         {
829             getServletContext().log("dump "+e);
830         }
831 
832         String lines= request.getParameter("lines");
833         if (lines!=null)
834         {
835             char[] line = "<span>A line of characters. Blah blah blah blah.  blooble blooble</span></br>\n".toCharArray();
836             for (int l=Integer.parseInt(lines);l-->0;)
837             {
838                 pout.write("<span>"+l+" </span>");
839                 pout.write(line);
840             }
841         }
842 
843         pout.write("</body>\n</html>\n");
844 
845         pout.close();
846 
847         if (pi != null)
848         {
849             if ("/ex4".equals(pi))
850                 throw new ServletException("test ex4", new Throwable());
851             if ("/ex5".equals(pi))
852                 throw new IOException("test ex5");
853             if ("/ex6".equals(pi))
854                 throw new UnavailableException("test ex6");
855         }
856 
857 
858     }
859 
860 
861     /* ------------------------------------------------------------ */
862     @Override
863     public String getServletInfo()
864     {
865         return "Dump Servlet";
866     }
867 
868     /* ------------------------------------------------------------ */
869     @Override
870     public synchronized void destroy()
871     {
872         _timer.cancel();
873     }
874 
875     /* ------------------------------------------------------------ */
876     private String getURI(HttpServletRequest request)
877     {
878         String uri= (String)request.getAttribute(RequestDispatcher.FORWARD_REQUEST_URI);
879         if (uri == null)
880             uri= request.getRequestURI();
881         return uri;
882     }
883 
884     /* ------------------------------------------------------------ */
885     private static String toString(Object o)
886     {
887         if (o == null)
888             return null;
889 
890         try
891         {
892             if (o.getClass().isArray())
893             {
894                 StringBuffer sb = new StringBuffer();
895                 if (!o.getClass().getComponentType().isPrimitive())
896                 {
897                     Object[] array= (Object[])o;
898                     for (int i= 0; i < array.length; i++)
899                     {
900                         if (i > 0)
901                             sb.append("\n");
902                         sb.append(array.getClass().getComponentType().getName());
903                         sb.append("[");
904                         sb.append(i);
905                         sb.append("]=");
906                         sb.append(toString(array[i]));
907                     }
908                     return sb.toString();
909                 }
910                 else
911                 {
912                     int length = Array.getLength(o);
913                     for (int i=0;i<length;i++)
914                     {
915                         if (i > 0)
916                             sb.append("\n");
917                         sb.append(o.getClass().getComponentType().getName());
918                         sb.append("[");
919                         sb.append(i);
920                         sb.append("]=");
921                         sb.append(toString(Array.get(o, i)));
922                     }
923                     return sb.toString();
924                 }
925             }
926             else
927                 return o.toString();
928         }
929         catch (Exception e)
930         {
931             return e.toString();
932         }
933     }
934 
935     private boolean dump(HttpServletResponse response, String data, String chars, String block, String dribble, boolean flush) throws IOException
936     {
937         if (data != null && data.length() > 0)
938         {
939             long d=Long.parseLong(data);
940             int b=(block!=null&&block.length()>0)?Integer.parseInt(block):50;
941             byte[] buf=new byte[b];
942             for (int i=0;i<b;i++)
943             {
944 
945                 buf[i]=(byte)('0'+(i%10));
946                 if (i%10==9)
947                     buf[i]=(byte)'\n';
948             }
949             buf[0]='o';
950             OutputStream out=response.getOutputStream();
951             response.setContentType("text/plain");
952             while (d > 0)
953             {
954                 if (b==1)
955                 {
956                     out.write(d%80==0?'\n':'.');
957                     d--;
958                 }
959                 else if (d>=b)
960                 {
961                     out.write(buf);
962                     d=d-b;
963                 }
964                 else
965                 {
966                     out.write(buf,0,(int)d);
967                     d=0;
968                 }
969 
970                 if (dribble!=null)
971                 {
972                     out.flush();
973                     try
974                     {
975                         Thread.sleep(Long.parseLong(dribble));
976                     }
977                     catch (Exception e)
978                     {
979                         e.printStackTrace();
980                         break;
981                     }
982                 }
983 
984             }
985 
986             if (flush)
987                 out.flush();
988 
989             return true;
990         }
991 
992         // Handle a dump of data
993         if (chars != null && chars.length() > 0)
994         {
995             long d=Long.parseLong(chars);
996             int b=(block!=null&&block.length()>0)?Integer.parseInt(block):50;
997             char[] buf=new char[b];
998             for (int i=0;i<b;i++)
999             {
1000                 buf[i]=(char)('0'+(i%10));
1001                 if (i%10==9)
1002                     buf[i]='\n';
1003             }
1004             buf[0]='o';
1005             response.setContentType("text/plain");
1006             PrintWriter out=response.getWriter();
1007             while (d > 0 && !out.checkError())
1008             {
1009                 if (b==1)
1010                 {
1011                     out.write(d%80==0?'\n':'.');
1012                     d--;
1013                 }
1014                 else if (d>=b)
1015                 {
1016                     out.write(buf);
1017                     d=d-b;
1018                 }
1019                 else
1020                 {
1021                     out.write(buf,0,(int)d);
1022                     d=0;
1023                 }
1024             }
1025             return true;
1026         }
1027         return false;
1028     }
1029 
1030     private String notag(String s)
1031     {
1032         if (s==null)
1033             return "null";
1034         s=s.replaceAll("&","&amp;");
1035         s=s.replaceAll("<","&lt;");
1036         s=s.replaceAll(">","&gt;");
1037         return s;
1038     }
1039 }