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1   // ========================================================================
2   // Copyright (c) 1996-2009 Mort Bay Consulting Pty. Ltd.
3   // ------------------------------------------------------------------------
4   // All rights reserved. This program and the accompanying materials
5   // are made available under the terms of the Eclipse Public License v1.0
6   // and Apache License v2.0 which accompanies this distribution.
7   // The Eclipse Public License is available at 
8   // http://www.eclipse.org/legal/epl-v10.html
9   // The Apache License v2.0 is available at
10  // http://www.opensource.org/licenses/apache2.0.php
11  // You may elect to redistribute this code under either of these licenses. 
12  // ========================================================================
13  
14  package com.acme;
15  import java.io.BufferedWriter;
16  import java.io.File;
17  import java.io.IOException;
18  import java.io.InputStream;
19  import java.io.OutputStream;
20  import java.io.OutputStreamWriter;
21  import java.io.PrintWriter;
22  import java.io.Reader;
23  import java.lang.reflect.Array;
24  import java.lang.reflect.Field;
25  import java.net.URL;
26  import java.util.Collections;
27  import java.util.Collection;
28  import java.util.Date;
29  import java.util.Enumeration;
30  import java.util.Locale;
31  import java.util.Timer;
32  import java.util.TimerTask;
33  
34  import javax.servlet.ServletConfig;
35  import javax.servlet.ServletContext;
36  import javax.servlet.ServletException;
37  import javax.servlet.ServletRequest;
38  import javax.servlet.ServletRequestWrapper;
39  import javax.servlet.ServletResponse;
40  import javax.servlet.ServletResponseWrapper;
41  import javax.servlet.UnavailableException;
42  import javax.servlet.http.Cookie;
43  import javax.servlet.http.HttpServlet;
44  import javax.servlet.http.HttpServletRequest;
45  import javax.servlet.http.HttpServletRequestWrapper;
46  import javax.servlet.http.HttpServletResponse;
47  import javax.servlet.http.HttpServletResponseWrapper;
48  
49  import org.eclipse.jetty.continuation.Continuation;
50  import org.eclipse.jetty.continuation.ContinuationListener;
51  import org.eclipse.jetty.continuation.ContinuationSupport;
52  import org.eclipse.jetty.http.HttpHeaders;
53  import org.eclipse.jetty.util.IO;
54  import org.eclipse.jetty.util.StringUtil;
55  import org.eclipse.jetty.util.log.Log;
56  import org.eclipse.jetty.util.log.Logger;
57  
58  
59  
60  /* ------------------------------------------------------------ */
61  /** Dump Servlet Request.
62   * 
63   */
64  public class Dump extends HttpServlet
65  {
66      private static final Logger LOG = Log.getLogger(Dump.class);
67  
68      boolean fixed;
69      Timer _timer;
70      
71      /* ------------------------------------------------------------ */
72      @Override
73      public void init(ServletConfig config) throws ServletException
74      {
75      	super.init(config);
76      	
77      	if (config.getInitParameter("unavailable")!=null && !fixed)
78      	{
79      	    
80      	    fixed=true;
81      	    throw new UnavailableException("Unavailable test",Integer.parseInt(config.getInitParameter("unavailable")));
82      	}
83      	
84      	_timer=new Timer(true);
85      }
86  
87      /* ------------------------------------------------------------ */
88      @Override
89      public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
90      {
91          doGet(request, response);
92      }
93  
94      /* ------------------------------------------------------------ */
95      @Override
96      public void doPut(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
97      {
98          byte[] buffer = new byte[8192];
99          int len=request.getContentLength();
100         int c=0;
101         InputStream in=request.getInputStream();
102         while (c<len)
103         {
104             int l = in.read(buffer);
105             if (l<0)
106                 break;
107             c+=l;
108         }
109         request.setAttribute("PUT",c+"bytes");
110         doGet(request, response);
111     }
112 
113     /* ------------------------------------------------------------ */
114     @Override
115     public void doGet(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException
116     {
117         if (!request.isUserInRole("user")) 
118         {
119             try 
120             {
121                 request.login("user", "password");
122             } 
123             catch(ServletException se) 
124             {
125             	se.printStackTrace();
126             }
127         }
128         
129         // Handle a dump of data
130         final String data= request.getParameter("data");
131         final String chars= request.getParameter("chars");
132         final String block= request.getParameter("block");
133         final String dribble= request.getParameter("dribble");
134         final boolean flush= request.getParameter("flush")!=null?Boolean.parseBoolean(request.getParameter("flush")):false;
135 
136         
137         if(request.getPathInfo()!=null && request.getPathInfo().toLowerCase().indexOf("script")!=-1)
138         {
139             response.sendRedirect(response.encodeRedirectURL(getServletContext().getContextPath() + "/dump/info"));
140             return;
141         }
142             
143         request.setCharacterEncoding("UTF-8");
144         
145         if (request.getParameter("busy")!=null)
146         {
147             long end = System.currentTimeMillis()+Long.parseLong(request.getParameter("busy"));
148             while(System.currentTimeMillis()<end)
149             {}
150         }
151         
152         if (request.getParameter("empty")!=null)
153         {
154             response.setStatus(200);
155             response.flushBuffer();
156             return;
157         }
158         
159         if (request.getParameter("sleep")!=null)
160         {
161             try
162             {
163                 long s = Long.parseLong(request.getParameter("sleep"));
164                 if (request.getHeader(HttpHeaders.EXPECT)!=null &&request.getHeader(HttpHeaders.EXPECT).indexOf("102")>=0)
165                 {
166                     Thread.sleep(s/2);
167                     response.sendError(102);
168                     Thread.sleep(s/2);
169                 }
170                 else
171                     Thread.sleep(s);
172             }
173             catch (InterruptedException e)
174             {
175                 return;
176             }
177             catch (Exception e)
178             {
179                 throw new ServletException(e);
180             }
181         }
182 
183         if (request.getAttribute("RESUME")==null && request.getParameter("resume")!=null)
184         {
185             request.setAttribute("RESUME",Boolean.TRUE);
186 
187             final long resume=Long.parseLong(request.getParameter("resume"));
188             final Continuation continuation = ContinuationSupport.getContinuation(request);
189             _timer.schedule(new TimerTask()
190             {
191                 @Override
192                 public void run()
193                 {
194                     continuation.resume();
195                 }
196             },resume);
197   
198         }
199 
200         if (request.getParameter("complete")!=null)
201         {
202             final long complete=Long.parseLong(request.getParameter("complete"));
203             _timer.schedule(new TimerTask()
204             {
205                 @Override
206                 public void run()
207                 {
208                     try
209                     {
210                         response.setContentType("text/html");
211                         response.getOutputStream().println("<h1>COMPLETED</h1>"); 
212                         Continuation continuation = ContinuationSupport.getContinuation(request);
213                         continuation.complete();
214                     }
215                     catch(Exception e)
216                     {
217                         e.printStackTrace();
218                     }
219                 }
220             },complete);
221         }
222         
223         if (request.getParameter("suspend")!=null && request.getAttribute("SUSPEND")!=Boolean.TRUE)
224         {
225             request.setAttribute("SUSPEND",Boolean.TRUE);
226             try
227             {
228                 Continuation continuation = ContinuationSupport.getContinuation(request);
229                 continuation.setTimeout(Long.parseLong(request.getParameter("suspend")));
230                 continuation.suspend();
231                 
232                 continuation.addContinuationListener(new ContinuationListener()
233                 {   
234                     public void onTimeout(Continuation continuation)
235                     {
236                         response.addHeader("Dump","onTimeout");
237                         try
238                         {
239                             if (!dump(response,data,chars,block,dribble,flush))
240                             {
241                                 response.setContentType("text/plain");
242                                 response.getOutputStream().println("EXPIRED");
243                             }
244                             continuation.complete();
245                         }
246                         catch (IOException e)
247                         {
248                             LOG.ignore(e);
249                         }
250                     }
251                     
252                     public void onComplete(Continuation continuation)
253                     {
254                         response.addHeader("Dump","onComplete");
255                     }
256                 });
257                 
258                 continuation.undispatch();
259             }
260             catch(Exception e)
261             {
262                 throw new ServletException(e);
263             }
264         }        
265             
266         request.setAttribute("Dump", this);
267         getServletContext().setAttribute("Dump",this);
268         // getServletContext().log("dump "+request.getRequestURI());
269 
270         // Force a content length response
271         String length= request.getParameter("length");
272         if (length != null && length.length() > 0)
273         {
274             response.setContentLength(Integer.parseInt(length));
275         }
276 
277         // Handle a dump of data
278         if (dump(response,data,chars,block,dribble,flush))
279             return;
280         
281         // handle an exception
282         String info= request.getPathInfo();
283         if (info != null && info.endsWith("Exception"))
284         {
285             try
286             {
287                 throw (Throwable) Thread.currentThread().getContextClassLoader().loadClass(info.substring(1)).newInstance();
288             }
289             catch (Throwable th)
290             {
291                 throw new ServletException(th);
292             }
293         }
294 
295         // test a reset
296         String reset= request.getParameter("reset");
297         if (reset != null && reset.length() > 0)
298         {
299             response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
300             response.setHeader("SHOULD_NOT","BE SEEN");
301             response.reset();
302         }
303         
304         
305         // handle an redirect
306         String redirect= request.getParameter("redirect");
307         if (redirect != null && redirect.length() > 0)
308         {
309             response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
310             response.sendRedirect(response.encodeRedirectURL(redirect));
311             try
312             {
313                 response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
314             }
315             catch(IOException e)
316             {
317                 // ignored as stream is closed.
318             }
319             return;
320         }
321 
322         // handle an error
323         String error= request.getParameter("error");
324         if (error != null && error.length() > 0 && request.getAttribute("javax.servlet.error.status_code")==null)
325         {
326             response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
327             response.sendError(Integer.parseInt(error));
328             try
329             {
330                 response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
331             }
332             catch(IllegalStateException e)
333             {
334                 try
335                 {
336                     response.getWriter().println("NOR THIS!!"); 
337                 }
338                 catch(IOException e2){}
339             }
340             catch(IOException e){}
341             return;
342         }
343 
344         // Handle a extra headers 
345         String headers= request.getParameter("headers");
346         if (headers != null && headers.length() > 0)
347         {
348             long h=Long.parseLong(headers);
349             for (int i=0;i<h;i++)
350                 response.addHeader("Header"+i,"Value"+i);
351         }
352 
353         String buffer= request.getParameter("buffer");
354         if (buffer != null && buffer.length() > 0)
355             response.setBufferSize(Integer.parseInt(buffer));
356 
357         String charset= request.getParameter("charset");
358         if (charset==null)
359             charset="UTF-8";
360         response.setCharacterEncoding(charset);
361         response.setContentType("text/html");
362 
363         if (info != null && info.indexOf("Locale/") >= 0)
364         {
365             try
366             {
367                 String locale_name= info.substring(info.indexOf("Locale/") + 7);
368                 Field f= java.util.Locale.class.getField(locale_name);
369                 response.setLocale((Locale)f.get(null));
370             }
371             catch (Exception e)
372             {
373                 e.printStackTrace();
374                 response.setLocale(Locale.getDefault());
375             }
376         }
377 
378         String cn= request.getParameter("cookie");
379         String cv=request.getParameter("cookiev");
380         if (cn!=null && cv!=null)
381         {
382             Cookie cookie= new Cookie(cn, cv);
383             if (request.getParameter("version")!=null)
384                 cookie.setVersion(Integer.parseInt(request.getParameter("version")));
385             cookie.setComment("Cookie from dump servlet");
386             response.addCookie(cookie);
387         }
388 
389         String pi= request.getPathInfo();
390         if (pi != null && pi.startsWith("/ex"))
391         {
392             OutputStream out= response.getOutputStream();
393             out.write("</H1>This text should be reset</H1>".getBytes());
394             if ("/ex0".equals(pi))
395                 throw new ServletException("test ex0", new Throwable());
396             else if ("/ex1".equals(pi))
397                 throw new IOException("test ex1");
398             else if ("/ex2".equals(pi))
399                 throw new UnavailableException("test ex2");
400             else if (pi.startsWith("/ex3/"))
401                 throw new UnavailableException("test ex3",Integer.parseInt(pi.substring(5)));
402             throw new RuntimeException("test");
403         }
404 
405         if ("true".equals(request.getParameter("close")))
406             response.setHeader("Connection","close");
407 
408         String buffered= request.getParameter("buffered");
409         
410         PrintWriter pout=null;
411         
412         try
413         {
414             pout =response.getWriter();
415         }
416         catch(IllegalStateException e)
417         {
418             pout=new PrintWriter(new OutputStreamWriter(response.getOutputStream(),charset));
419         }
420         if (buffered!=null)
421             pout = new PrintWriter(new BufferedWriter(pout,Integer.parseInt(buffered)));
422         
423         try
424         {
425             pout.write("<html>\n<body>\n");
426             pout.write("<h1>Dump Servlet</h1>\n");
427             pout.write("<table width=\"95%\">");
428             pout.write("<tr>\n");
429             pout.write("<th align=\"right\">getMethod:&nbsp;</th>");
430             pout.write("<td>" + notag(request.getMethod())+"</td>");
431             pout.write("</tr><tr>\n");
432             pout.write("<th align=\"right\">getContentLength:&nbsp;</th>");
433             pout.write("<td>"+Integer.toString(request.getContentLength())+"</td>");
434             pout.write("</tr><tr>\n");
435             pout.write("<th align=\"right\">getContentType:&nbsp;</th>");
436             pout.write("<td>"+notag(request.getContentType())+"</td>");
437             pout.write("</tr><tr>\n");
438             pout.write("<th align=\"right\">getRequestURI:&nbsp;</th>");
439             pout.write("<td>"+notag(request.getRequestURI())+"</td>");
440             pout.write("</tr><tr>\n");
441             pout.write("<th align=\"right\">getRequestURL:&nbsp;</th>");
442             pout.write("<td>"+notag(request.getRequestURL().toString())+"</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\">getServletPath:&nbsp;</th>");
448             pout.write("<td>"+notag(request.getServletPath())+"</td>");
449             pout.write("</tr><tr>\n");
450             pout.write("<th align=\"right\">getPathInfo:&nbsp;</th>");
451             pout.write("<td>"+notag(request.getPathInfo())+"</td>");
452             pout.write("</tr><tr>\n");
453             pout.write("<th align=\"right\">getPathTranslated:&nbsp;</th>");
454             pout.write("<td>"+notag(request.getPathTranslated())+"</td>");
455             pout.write("</tr><tr>\n");
456             pout.write("<th align=\"right\">getQueryString:&nbsp;</th>");
457             pout.write("<td>"+notag(request.getQueryString())+"</td>");
458             pout.write("</tr><tr>\n");
459             
460             pout.write("<th align=\"right\">getProtocol:&nbsp;</th>");
461             pout.write("<td>"+request.getProtocol()+"</td>");
462             pout.write("</tr><tr>\n");
463             pout.write("<th align=\"right\">getScheme:&nbsp;</th>");
464             pout.write("<td>"+request.getScheme()+"</td>");
465             pout.write("</tr><tr>\n");
466             pout.write("<th align=\"right\">getServerName:&nbsp;</th>");
467             pout.write("<td>"+notag(request.getServerName())+"</td>");
468             pout.write("</tr><tr>\n");
469             pout.write("<th align=\"right\">getServerPort:&nbsp;</th>");
470             pout.write("<td>"+Integer.toString(request.getServerPort())+"</td>");
471             pout.write("</tr><tr>\n");
472             pout.write("<th align=\"right\">getLocalName:&nbsp;</th>");
473             pout.write("<td>"+request.getLocalName()+"</td>");
474             pout.write("</tr><tr>\n");
475             pout.write("<th align=\"right\">getLocalAddr:&nbsp;</th>");
476             pout.write("<td>"+request.getLocalAddr()+"</td>");
477             pout.write("</tr><tr>\n");
478             pout.write("<th align=\"right\">getLocalPort:&nbsp;</th>");
479             pout.write("<td>"+Integer.toString(request.getLocalPort())+"</td>");
480             pout.write("</tr><tr>\n");
481             pout.write("<th align=\"right\">getRemoteUser:&nbsp;</th>");
482             pout.write("<td>"+request.getRemoteUser()+"</td>");
483             pout.write("</tr><tr>\n");
484             pout.write("<th align=\"right\">getUserPrincipal:&nbsp;</th>");
485             pout.write("<td>"+request.getUserPrincipal()+"</td>");
486             pout.write("</tr><tr>\n");
487             pout.write("<th align=\"right\">getRemoteAddr:&nbsp;</th>");
488             pout.write("<td>"+request.getRemoteAddr()+"</td>");
489             pout.write("</tr><tr>\n");
490             pout.write("<th align=\"right\">getRemoteHost:&nbsp;</th>");
491             pout.write("<td>"+request.getRemoteHost()+"</td>");
492             pout.write("</tr><tr>\n");
493             pout.write("<th align=\"right\">getRemotePort:&nbsp;</th>");
494             pout.write("<td>"+request.getRemotePort()+"</td>");
495             pout.write("</tr><tr>\n");
496             pout.write("<th align=\"right\">getRequestedSessionId:&nbsp;</th>");
497             pout.write("<td>"+request.getRequestedSessionId()+"</td>");
498             pout.write("</tr><tr>\n");
499             pout.write("<th align=\"right\">isSecure():&nbsp;</th>");
500             pout.write("<td>"+request.isSecure()+"</td>");
501 
502             pout.write("</tr><tr>\n");
503             pout.write("<th align=\"right\">isUserInRole(admin):&nbsp;</th>");
504             pout.write("<td>"+request.isUserInRole("admin")+"</td>");
505 
506             pout.write("</tr><tr>\n");
507             pout.write("<th align=\"right\">getLocale:&nbsp;</th>");
508             pout.write("<td>"+request.getLocale()+"</td>");
509             
510             Enumeration locales= request.getLocales();
511             while (locales.hasMoreElements())
512             {
513                 pout.write("</tr><tr>\n");
514                 pout.write("<th align=\"right\">getLocales:&nbsp;</th>");
515                 pout.write("<td>"+locales.nextElement()+"</td>");
516             }
517             pout.write("</tr><tr>\n");
518             
519             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Other HTTP Headers:</big></th>");
520             Enumeration h= request.getHeaderNames();
521             String name;
522             while (h.hasMoreElements())
523             {
524                 name= (String)h.nextElement();
525 
526                 Enumeration h2= request.getHeaders(name);
527                 while (h2.hasMoreElements())
528                 {
529                     String hv= (String)h2.nextElement();
530                     pout.write("</tr><tr>\n");
531                     pout.write("<th align=\"right\">"+notag(name)+":&nbsp;</th>");
532                     pout.write("<td>"+notag(hv)+"</td>");
533                 }
534             }
535 
536             pout.write("</tr><tr>\n");
537             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Request Parameters:</big></th>");
538             h= request.getParameterNames();
539             while (h.hasMoreElements())
540             {
541                 name= (String)h.nextElement();
542                 pout.write("</tr><tr>\n");
543                 pout.write("<th align=\"right\">"+notag(name)+":&nbsp;</th>");
544                 pout.write("<td>"+notag(request.getParameter(name))+"</td>");
545                 String[] values= request.getParameterValues(name);
546                 if (values == null)
547                 {
548                     pout.write("</tr><tr>\n");
549                     pout.write("<th align=\"right\">"+notag(name)+" Values:&nbsp;</th>");
550                     pout.write("<td>"+"NULL!"+"</td>");
551                 }
552                 else if (values.length > 1)
553                 {
554                     for (int i= 0; i < values.length; i++)
555                     {
556                         pout.write("</tr><tr>\n");
557                         pout.write("<th align=\"right\">"+notag(name)+"["+i+"]:&nbsp;</th>");
558                         pout.write("<td>"+notag(values[i])+"</td>");
559                     }
560                 }
561             }
562 
563             pout.write("</tr><tr>\n");
564             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Cookies:</big></th>");
565             Cookie[] cookies = request.getCookies();
566             for (int i=0; cookies!=null && i<cookies.length;i++)
567             {
568                 Cookie cookie = cookies[i];
569 
570                 pout.write("</tr><tr>\n");
571                 pout.write("<th align=\"right\">"+notag(cookie.getName())+":&nbsp;</th>");
572                 pout.write("<td>"+notag(cookie.getValue())+"</td>");
573             }
574             
575             String content_type=request.getContentType();
576             if (content_type!=null &&
577                 !content_type.startsWith("application/x-www-form-urlencoded") &&
578                 !content_type.startsWith("multipart/form-data"))
579             {
580                 pout.write("</tr><tr>\n");
581                 pout.write("<th align=\"left\" valign=\"top\" colspan=\"2\"><big><br/>Content:</big></th>");
582                 pout.write("</tr><tr>\n");
583                 pout.write("<td><pre>");
584                 char[] content= new char[4096];
585                 int len;
586                 try{
587                     Reader in=request.getReader();
588                     
589                     while((len=in.read(content))>=0)
590                         pout.write(notag(new String(content,0,len)));
591                 }
592                 catch(IOException e)
593                 {
594                     pout.write(e.toString());
595                 }
596                 
597                 pout.write("</pre></td>");
598             }
599             
600             pout.write("</tr><tr>\n");
601             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Request Attributes:</big></th>");
602             Enumeration a= request.getAttributeNames();
603             while (a.hasMoreElements())
604             {
605                 name= (String)a.nextElement();
606                 pout.write("</tr><tr>\n");
607                 pout.write("<th align=\"right\" valign=\"top\">"+name.replace("."," .")+":&nbsp;</th>");
608                 Object value=request.getAttribute(name);
609                 if (value instanceof File)
610                 {
611                     File file = (File)value;
612                     pout.write("<td>"+"<pre>" + file.getName()+" ("+file.length()+" "+new Date(file.lastModified())+ ")</pre>"+"</td>");
613                 }
614                 else
615                     pout.write("<td>"+"<pre>" + toString(request.getAttribute(name)) + "</pre>"+"</td>");
616             }
617             request.setAttribute("org.eclipse.jetty.servlet.MultiPartFilter.files",null);
618 
619             
620             pout.write("</tr><tr>\n");
621             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Servlet InitParameters:</big></th>");
622             a= getInitParameterNames();
623             while (a.hasMoreElements())
624             {
625                 name= (String)a.nextElement();
626                 pout.write("</tr><tr>\n");
627                 pout.write("<th align=\"right\">"+name+":&nbsp;</th>");
628                 pout.write("<td>"+ toString(getInitParameter(name)) +"</td>");
629             }
630 
631             pout.write("</tr><tr>\n");
632             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Context InitParameters:</big></th>");
633             a= getServletContext().getInitParameterNames();
634             while (a.hasMoreElements())
635             {
636                 name= (String)a.nextElement();
637                 pout.write("</tr><tr>\n");
638                 pout.write("<th align=\"right\" valign=\"top\">"+name.replace("."," .")+":&nbsp;</th>");
639                 pout.write("<td>"+ toString(getServletContext().getInitParameter(name)) + "</td>");
640             }
641 
642             pout.write("</tr><tr>\n");
643             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Context Attributes:</big></th>");
644             a= getServletContext().getAttributeNames();
645             while (a.hasMoreElements())
646             {
647                 name= (String)a.nextElement();
648                 pout.write("</tr><tr>\n");
649                 pout.write("<th align=\"right\" valign=\"top\">"+name.replace("."," .")+":&nbsp;</th>");
650                 pout.write("<td>"+"<pre>" + toString(getServletContext().getAttribute(name)) + "</pre>"+"</td>");
651             }
652 
653             String res= request.getParameter("resource");
654             if (res != null && res.length() > 0)
655             {
656                 pout.write("</tr><tr>\n");
657                 pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Get Resource: \""+res+"\"</big></th>");
658 
659                 pout.write("</tr><tr>\n");
660                 pout.write("<th align=\"right\">getServletContext().getResource(...):&nbsp;</th>");
661                 try{pout.write("<td>"+getServletContext().getResource(res)+"</td>");}
662                 catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
663                 
664                 pout.write("</tr><tr>\n");
665                 pout.write("<th align=\"right\">getServletContext().getResourcePaths(...):&nbsp;</th>");
666                 try{pout.write("<td>"+getServletContext().getResourcePaths(res)+"</td>");}
667                 catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
668                 
669                 pout.write("</tr><tr>\n");
670                 pout.write("<th align=\"right\">getServletContext().getContext(...):&nbsp;</th>");
671                 
672                 ServletContext context = getServletContext().getContext(res);
673                 pout.write("<td>"+context+"</td>");
674                 
675                 if (context!=null)
676                 {
677                     pout.write("</tr><tr>\n");
678                     pout.write("<th align=\"right\">getServletContext().getContext(...).getResource(...):&nbsp;</th>");
679                     try{pout.write("<td>"+context.getResource(res)+"</td>");}
680                     catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
681                     
682                     pout.write("</tr><tr>\n");
683                     pout.write("<th align=\"right\">getServletContext().getContext(...).getResourcePaths(...):&nbsp;</th>");
684                     try{pout.write("<td>"+context.getResourcePaths(res)+"</td>");}
685                     catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
686                     
687                     String cp=context.getContextPath();
688                     if (cp==null || "/".equals(cp))
689                         cp="";
690                     pout.write("</tr><tr>\n");
691                     pout.write("<th align=\"right\">getServletContext().getContext(...),getRequestDispatcher(...):&nbsp;</th>");
692                     pout.write("<td>"+getServletContext().getContext(res).getRequestDispatcher(res.substring(cp.length()))+"</td>");
693                 }
694 
695                 pout.write("</tr><tr>\n");
696                 pout.write("<th align=\"right\">this.getClass().getResource(...):&nbsp;</th>");
697                 pout.write("<td>"+this.getClass().getResource(res)+"</td>");
698 
699                 pout.write("</tr><tr>\n");
700                 pout.write("<th align=\"right\">this.getClass().getClassLoader().getResource(...):&nbsp;</th>");
701                 pout.write("<td>"+this.getClass().getClassLoader().getResource(res)+"</td>");
702 
703                 pout.write("</tr><tr>\n");
704                 pout.write("<th align=\"right\">Thread.currentThread().getContextClassLoader().getResource(...):&nbsp;</th>");
705                 pout.write("<td>"+Thread.currentThread().getContextClassLoader().getResource(res)+"</td>");
706                 pout.write("</tr><tr>\n");
707                 pout.write("<th align=\"right\">Thread.currentThread().getContextClassLoader().getResources(...):&nbsp;</th>");
708                 Enumeration<URL> urls = Thread.currentThread().getContextClassLoader().getResources(res);
709                 if (urls==null)
710                     pout.write("<td>null</td>");
711                 else
712                     pout.write("<td>"+Collections.list(urls)+"</td>");
713 
714             }
715             
716             pout.write("</tr></table>\n");
717 
718             /* ------------------------------------------------------------ */
719             pout.write("<h2>Request Wrappers</h2>\n");
720             ServletRequest rw=request;
721             int w=0;
722             while (rw !=null)
723             {
724                 pout.write((w++)+": "+rw.getClass().getName()+"<br/>");
725                 if (rw instanceof HttpServletRequestWrapper)
726                     rw=((HttpServletRequestWrapper)rw).getRequest();
727                 else if (rw instanceof ServletRequestWrapper)
728                     rw=((ServletRequestWrapper)rw).getRequest();
729                 else
730                     rw=null;
731             }
732 
733             /* ------------------------------------------------------------ */
734             pout.write("<h2>Response Wrappers</h2>\n");
735             ServletResponse rsw=response;
736             w=0;
737             while (rsw !=null)
738             {
739                 pout.write((w++)+": "+rsw.getClass().getName()+"<br/>");
740                 if (rsw instanceof HttpServletResponseWrapper)
741                     rsw=((HttpServletResponseWrapper)rsw).getResponse();
742                 else if (rsw instanceof ServletResponseWrapper)
743                     rsw=((ServletResponseWrapper)rsw).getResponse();
744                 else
745                     rsw=null;
746             }
747             
748             pout.write("<br/>");
749             pout.write("<h2>International Characters (UTF-8)</h2>");
750             pout.write("LATIN LETTER SMALL CAPITAL AE<br/>\n");
751             pout.write("Directly uni encoded(\\u1d01): \u1d01<br/>");
752             pout.write("HTML reference (&amp;AElig;): &AElig;<br/>");
753             pout.write("Decimal (&amp;#7425;): &#7425;<br/>");
754             pout.write("Javascript unicode (\\u1d01) : <script language='javascript'>document.write(\"\u1d01\");</script><br/>");
755             pout.write("<br/>");
756             pout.write("<h2>Form to generate GET content</h2>");
757             pout.write("<form method=\"GET\" action=\""+response.encodeURL(getURI(request))+"\">");
758             pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"value\"/><br/>\n");
759             pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\">");
760             pout.write("</form>");
761 
762             pout.write("<br/>");
763             
764             pout.write("<h2>Form to generate POST content</h2>");
765             pout.write("<form method=\"POST\" accept-charset=\"utf-8\" action=\""+response.encodeURL(getURI(request))+"\">");
766             pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"value\"/><br/>\n");
767             pout.write("Select: <select multiple name=\"Select\">\n");
768             pout.write("<option>ValueA</option>");
769             pout.write("<option>ValueB1,ValueB2</option>");
770             pout.write("<option>ValueC</option>");
771             pout.write("</select><br/>");
772             pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\"><br/>");
773             pout.write("</form>");
774             pout.write("<br/>");
775             
776             pout.write("<h2>Form to generate UPLOAD content</h2>");
777             pout.write("<form method=\"POST\" enctype=\"multipart/form-data\" accept-charset=\"utf-8\" action=\""+
778                     response.encodeURL(getURI(request))+(request.getQueryString()==null?"":("?"+request.getQueryString()))+
779                     "\">");
780             pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"comment\"/><br/>\n");
781             pout.write("File 1: <input type=\"file\" name=\"file1\" /><br/>\n");
782             pout.write("File 2: <input type=\"file\" name=\"file2\" /><br/>\n");
783             pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\"><br/>");
784             pout.write("</form>");
785 
786             pout.write("<h2>Form to set Cookie</h2>");
787             pout.write("<form method=\"POST\" action=\""+response.encodeURL(getURI(request))+"\">");
788             pout.write("cookie: <input type=\"text\" name=\"cookie\" /><br/>\n");
789             pout.write("value: <input type=\"text\" name=\"cookiev\" /><br/>\n");
790             pout.write("<input type=\"submit\" name=\"Action\" value=\"setCookie\">");
791             pout.write("</form>\n");
792             
793             pout.write("<h2>Form to get Resource</h2>");
794             pout.write("<form method=\"POST\" action=\""+response.encodeURL(getURI(request))+"\">");
795             pout.write("resource: <input type=\"text\" name=\"resource\" /><br/>\n");
796             pout.write("<input type=\"submit\" name=\"Action\" value=\"getResource\">");
797             pout.write("</form>\n");
798         }
799         catch (Exception e)
800         {
801             getServletContext().log("dump "+e);
802         }
803         
804         String lines= request.getParameter("lines");
805         if (lines!=null)
806         {
807             char[] line = "<span>A line of characters. Blah blah blah blah.  blooble blooble</span></br>\n".toCharArray();
808             for (int l=Integer.parseInt(lines);l-->0;)
809             {
810                 pout.write("<span>"+l+" </span>");
811                 pout.write(line);
812             }
813         }
814         
815         pout.write("</body>\n</html>\n");
816         
817         pout.close();
818 
819         if (pi != null)
820         {
821             if ("/ex4".equals(pi))
822                 throw new ServletException("test ex4", new Throwable());
823             if ("/ex5".equals(pi))
824                 throw new IOException("test ex5");
825             if ("/ex6".equals(pi))
826                 throw new UnavailableException("test ex6");
827         }
828 
829 
830     }
831 
832 
833     /* ------------------------------------------------------------ */
834     @Override
835     public String getServletInfo()
836     {
837         return "Dump Servlet";
838     }
839 
840     /* ------------------------------------------------------------ */
841     @Override
842     public synchronized void destroy()
843     {
844         _timer.cancel();
845     }
846 
847     /* ------------------------------------------------------------ */
848     private String getURI(HttpServletRequest request)
849     {
850         String uri= (String)request.getAttribute("javax.servlet.forward.request_uri");
851         if (uri == null)
852             uri= request.getRequestURI();
853         return uri;
854     }
855 
856     /* ------------------------------------------------------------ */
857     private static String toString(Object o)
858     {
859         if (o == null)
860             return null;
861 
862         try
863         {
864             if (o.getClass().isArray())
865             {
866                 StringBuffer sb = new StringBuffer();
867                 if (!o.getClass().getComponentType().isPrimitive())
868                 {
869                     Object[] array= (Object[])o;
870                     for (int i= 0; i < array.length; i++)
871                     {
872                         if (i > 0)
873                             sb.append("\n");
874                         sb.append(array.getClass().getComponentType().getName());
875                         sb.append("[");
876                         sb.append(i);
877                         sb.append("]=");
878                         sb.append(toString(array[i]));
879                     }
880                     return sb.toString();
881                 }
882                 else
883                 { 
884                     int length = Array.getLength(o);
885                     for (int i=0;i<length;i++)
886                     {
887                         if (i > 0)
888                             sb.append("\n");
889                         sb.append(o.getClass().getComponentType().getName()); 
890                         sb.append("[");
891                         sb.append(i);
892                         sb.append("]=");
893                         sb.append(toString(Array.get(o, i)));
894                     }
895                     return sb.toString();
896                 }
897             }
898             else
899                 return o.toString();
900         }
901         catch (Exception e)
902         {
903             return e.toString();
904         }
905     }
906 
907     private boolean dump(HttpServletResponse response, String data, String chars, String block, String dribble, boolean flush) throws IOException
908     {
909         if (data != null && data.length() > 0)
910         {
911             long d=Long.parseLong(data);
912             int b=(block!=null&&block.length()>0)?Integer.parseInt(block):50;
913             byte[] buf=new byte[b];
914             for (int i=0;i<b;i++)
915             {
916                 
917                 buf[i]=(byte)('0'+(i%10));
918                 if (i%10==9)
919                     buf[i]=(byte)'\n';
920             }
921             buf[0]='o';
922             OutputStream out=response.getOutputStream();
923             response.setContentType("text/plain");
924             while (d > 0)
925             {
926                 if (b==1)
927                 {
928                     out.write(d%80==0?'\n':'.');
929                     d--;
930                 }
931                 else if (d>=b)
932                 {
933                     out.write(buf);
934                     d=d-b;
935                 }
936                 else
937                 {
938                     out.write(buf,0,(int)d);
939                     d=0;
940                 }
941                 
942                 if (dribble!=null)
943                 {
944                     out.flush();
945                     try
946                     {
947                         Thread.sleep(Long.parseLong(dribble));
948                     }
949                     catch (Exception e)
950                     {
951                         e.printStackTrace();
952                         break;
953                     }
954                 }
955                 
956             }
957             
958             if (flush)
959                 out.flush();
960             
961             return true;
962         }
963 
964         // Handle a dump of data
965         if (chars != null && chars.length() > 0)
966         {
967             long d=Long.parseLong(chars);
968             int b=(block!=null&&block.length()>0)?Integer.parseInt(block):50;
969             char[] buf=new char[b];
970             for (int i=0;i<b;i++)
971             {
972                 buf[i]=(char)('0'+(i%10));
973                 if (i%10==9)
974                     buf[i]='\n';
975             }
976             buf[0]='o';
977             response.setContentType("text/plain");
978             PrintWriter out=response.getWriter();
979             while (d > 0 && !out.checkError())
980             {
981                 if (b==1)
982                 {
983                     out.write(d%80==0?'\n':'.');
984                     d--;
985                 }
986                 else if (d>=b)
987                 {
988                     out.write(buf);
989                     d=d-b;
990                 }
991                 else
992                 {
993                     out.write(buf,0,(int)d);
994                     d=0;
995                 }
996             }
997             return true;
998         }    
999         return false;
1000     }
1001     
1002     private String notag(String s)
1003     {
1004         if (s==null)
1005             return "null";
1006         s=StringUtil.replace(s,"&","&amp;");
1007         s=StringUtil.replace(s,"<","&lt;");
1008         s=StringUtil.replace(s,">","&gt;");
1009         return s;
1010     }
1011 }