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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.IOException;
17  import java.io.OutputStream;
18  import java.io.OutputStreamWriter;
19  import java.io.PrintWriter;
20  import java.io.Reader;
21  import java.lang.reflect.Array;
22  import java.lang.reflect.Field;
23  import java.util.Enumeration;
24  import java.util.Locale;
25  
26  import javax.servlet.ServletConfig;
27  import javax.servlet.ServletException;
28  import javax.servlet.ServletRequest;
29  import javax.servlet.ServletRequestWrapper;
30  import javax.servlet.ServletResponse;
31  import javax.servlet.ServletResponseWrapper;
32  import javax.servlet.UnavailableException;
33  import javax.servlet.http.Cookie;
34  import javax.servlet.http.HttpServlet;
35  import javax.servlet.http.HttpServletRequest;
36  import javax.servlet.http.HttpServletRequestWrapper;
37  import javax.servlet.http.HttpServletResponse;
38  import javax.servlet.http.HttpServletResponseWrapper;
39  
40  import org.eclipse.jetty.continuation.Continuation;
41  import org.eclipse.jetty.continuation.ContinuationSupport;
42  import org.eclipse.jetty.http.HttpHeaders;
43  import org.eclipse.jetty.util.StringUtil;
44  
45  
46  
47  /* ------------------------------------------------------------ */
48  /** Dump Servlet Request.
49   * 
50   */
51  public class Dump extends HttpServlet
52  {
53      static boolean fixed;
54      /* ------------------------------------------------------------ */
55      public void init(ServletConfig config) throws ServletException
56      {
57      	super.init(config);
58      	
59      	if (config.getInitParameter("unavailable")!=null && !fixed)
60      	{
61      	    
62      	    fixed=true;
63      	    throw new UnavailableException("Unavailable test",Integer.parseInt(config.getInitParameter("unavailable")));
64      	}
65      }
66  
67      /* ------------------------------------------------------------ */
68      public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
69      {
70          doGet(request, response);
71      }
72  
73      /* ------------------------------------------------------------ */
74      public void doGet(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException
75      {
76          if(request.getPathInfo()!=null && request.getPathInfo().toLowerCase().indexOf("script")!=-1)
77          {
78              response.sendRedirect(getServletContext().getContextPath() + "/dump/info");
79              return;
80          }
81              
82          request.setCharacterEncoding("UTF-8");
83          
84          if (request.getParameter("empty")!=null)
85          {
86              response.setStatus(200);
87              response.flushBuffer();
88              return;
89          }
90          
91          if (request.getParameter("sleep")!=null)
92          {
93              try
94              {
95                  long s = Long.parseLong(request.getParameter("sleep"));
96                  if (request.getHeader(HttpHeaders.EXPECT)!=null &&request.getHeader(HttpHeaders.EXPECT).indexOf("102")>=0)
97                  {
98                      Thread.sleep(s/2);
99                      response.sendError(102);
100                     Thread.sleep(s/2);
101                 }
102                 else
103                     Thread.sleep(s);
104             }
105             catch (InterruptedException e)
106             {
107                 return;
108             }
109             catch (Exception e)
110             {
111                 throw new ServletException(e);
112             }
113         }
114 
115         if (request.getAttribute("RESUME")==null && request.getParameter("resume")!=null)
116         {
117             request.setAttribute("RESUME",Boolean.TRUE);
118 
119             final long resume=Long.parseLong(request.getParameter("resume"));
120             new Thread(new Runnable()
121             {
122                 public void run()
123                 {
124                     try
125                     {
126                         Thread.sleep(resume);
127                     }
128                     catch (InterruptedException e)
129                     {
130                         e.printStackTrace();
131                     }
132                     Continuation continuation = ContinuationSupport.getContinuation(request,response);
133                     continuation.resume();
134                 }
135                 
136             }).start();
137         }
138         
139         if (request.getParameter("suspend")!=null)
140         {
141             try
142             {
143                 Continuation continuation = ContinuationSupport.getContinuation(request,response);
144                 continuation.setTimeout(Long.parseLong(request.getParameter("suspend")));
145                 continuation.suspend();
146             }
147             catch(Exception e)
148             {
149                 throw new ServletException(e);
150             }
151         }
152 
153         if (request.getParameter("complete")!=null)
154         {
155             final long complete=Long.parseLong(request.getParameter("complete"));
156             new Thread(new Runnable()
157             {
158                 public void run()
159                 {
160                     try
161                     {
162                         Thread.sleep(complete);
163                     }
164                     catch (InterruptedException e)
165                     {
166                         e.printStackTrace();
167                     }
168                     try
169                     {
170                         response.setContentType("text/html");
171                         response.getOutputStream().println("<h1>COMPLETED</h1>"); 
172                         Continuation continuation = ContinuationSupport.getContinuation(request,response);
173                         continuation.complete();
174                     }
175                     catch (IOException e)
176                     {
177                         e.printStackTrace();
178                     }
179                 }
180 
181             }).start();
182         }
183         
184             
185         request.setAttribute("Dump", this);
186         getServletContext().setAttribute("Dump",this);
187         // getServletContext().log("dump "+request.getRequestURI());
188 
189         // Force a content length response
190         String length= request.getParameter("length");
191         if (length != null && length.length() > 0)
192         {
193             response.setContentLength(Integer.parseInt(length));
194         }
195 
196         // Handle a dump of data
197         String data= request.getParameter("data");
198         String block= request.getParameter("block");
199         String dribble= request.getParameter("dribble");
200         boolean flush= request.getParameter("flush")!=null?Boolean.parseBoolean(request.getParameter("flush")):false;
201         if (data != null && data.length() > 0)
202         {
203             int d=Integer.parseInt(data);
204             int b=(block!=null&&block.length()>0)?Integer.parseInt(block):50;
205             byte[] buf=new byte[b];
206             for (int i=0;i<b;i++)
207             {
208                 
209                 buf[i]=(byte)('0'+(i%10));
210                 if (i%10==9)
211                     buf[i]=(byte)'\n';
212             }
213             buf[0]='o';
214             OutputStream out=response.getOutputStream();
215             response.setContentType("text/plain");
216             while (d > 0)
217             {
218                 if (b==1)
219                 {
220                     out.write(d%80==0?'\n':'.');
221                     d--;
222                 }
223                 else if (d>=b)
224                 {
225                     out.write(buf);
226                     d=d-b;
227                 }
228                 else
229                 {
230                     out.write(buf,0,d);
231                     d=0;
232                 }
233                 
234                 if (dribble!=null)
235                 {
236                     out.flush();
237                     try
238                     {
239                         Thread.sleep(Long.parseLong(dribble));
240                     }
241                     catch (Exception e)
242                     {
243                         e.printStackTrace();
244                         break;
245                     }
246                 }
247                 
248             }
249             
250             if (flush)
251                 out.flush();
252             
253             return;
254         }
255         
256         
257         // handle an exception
258         String info= request.getPathInfo();
259         if (info != null && info.endsWith("Exception"))
260         {
261             try
262             {
263                 throw (Throwable) Thread.currentThread().getContextClassLoader().loadClass(info.substring(1)).newInstance();
264             }
265             catch (Throwable th)
266             {
267                 throw new ServletException(th);
268             }
269         }
270 
271         // test a reset
272         String reset= request.getParameter("reset");
273         if (reset != null && reset.length() > 0)
274         {
275             response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
276             response.setHeader("SHOULD_NOT","BE SEEN");
277             response.reset();
278         }
279         
280         
281         // handle an redirect
282         String redirect= request.getParameter("redirect");
283         if (redirect != null && redirect.length() > 0)
284         {
285             response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
286             response.sendRedirect(redirect);
287             try
288             {
289                 response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
290             }
291             catch(IOException e)
292             {
293                 // ignored as stream is closed.
294             }
295             return;
296         }
297 
298         // handle an error
299         String error= request.getParameter("error");
300         if (error != null && error.length() > 0 && request.getAttribute("javax.servlet.error.status_code")==null)
301         {
302             response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
303             response.sendError(Integer.parseInt(error));
304             try
305             {
306                 response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
307             }
308             catch(IllegalStateException e)
309             {
310                 try
311                 {
312                     response.getWriter().println("NOR THIS!!"); 
313                 }
314                 catch(IOException e2){}
315             }
316             catch(IOException e){}
317             return;
318         }
319 
320 
321         String buffer= request.getParameter("buffer");
322         if (buffer != null && buffer.length() > 0)
323             response.setBufferSize(Integer.parseInt(buffer));
324 
325         String charset= request.getParameter("charset");
326         if (charset==null)
327             charset="UTF-8";
328         response.setCharacterEncoding(charset);
329         response.setContentType("text/html");
330 
331         if (info != null && info.indexOf("Locale/") >= 0)
332         {
333             try
334             {
335                 String locale_name= info.substring(info.indexOf("Locale/") + 7);
336                 Field f= java.util.Locale.class.getField(locale_name);
337                 response.setLocale((Locale)f.get(null));
338             }
339             catch (Exception e)
340             {
341                 e.printStackTrace();
342                 response.setLocale(Locale.getDefault());
343             }
344         }
345 
346         String cn= request.getParameter("cookie");
347         String cv=request.getParameter("cookiev");
348         if (cn!=null && cv!=null)
349         {
350             Cookie cookie= new Cookie(cn, cv);
351             if (request.getParameter("version")!=null)
352                 cookie.setVersion(Integer.parseInt(request.getParameter("version")));
353             cookie.setComment("Cookie from dump servlet");
354             response.addCookie(cookie);
355         }
356 
357         String pi= request.getPathInfo();
358         if (pi != null && pi.startsWith("/ex"))
359         {
360             OutputStream out= response.getOutputStream();
361             out.write("</H1>This text should be reset</H1>".getBytes());
362             if ("/ex0".equals(pi))
363                 throw new ServletException("test ex0", new Throwable());
364             else if ("/ex1".equals(pi))
365                 throw new IOException("test ex1");
366             else if ("/ex2".equals(pi))
367                 throw new UnavailableException("test ex2");
368             else if (pi.startsWith("/ex3/"))
369                 throw new UnavailableException("test ex3",Integer.parseInt(pi.substring(5)));
370             throw new RuntimeException("test");
371         }
372 
373         if ("true".equals(request.getParameter("close")))
374             response.setHeader("Connection","close");
375 
376         String buffered= request.getParameter("buffered");
377         
378         PrintWriter pout=null;
379         
380         try
381         {
382             pout =response.getWriter();
383         }
384         catch(IllegalStateException e)
385         {
386             pout=new PrintWriter(new OutputStreamWriter(response.getOutputStream(),charset));
387         }
388         if (buffered!=null)
389             pout = new PrintWriter(new BufferedWriter(pout,Integer.parseInt(buffered)));
390         
391         try
392         {
393             pout.write("<html>\n<body>\n");
394             pout.write("<h1>Dump Servlet</h1>\n");
395             pout.write("<table width=\"95%\">");
396             pout.write("<tr>\n");
397             pout.write("<th align=\"right\">getMethod:&nbsp;</th>");
398             pout.write("<td>" + notag(request.getMethod())+"</td>");
399             pout.write("</tr><tr>\n");
400             pout.write("<th align=\"right\">getContentLength:&nbsp;</th>");
401             pout.write("<td>"+Integer.toString(request.getContentLength())+"</td>");
402             pout.write("</tr><tr>\n");
403             pout.write("<th align=\"right\">getContentType:&nbsp;</th>");
404             pout.write("<td>"+notag(request.getContentType())+"</td>");
405             pout.write("</tr><tr>\n");
406             pout.write("<th align=\"right\">getRequestURI:&nbsp;</th>");
407             pout.write("<td>"+notag(request.getRequestURI())+"</td>");
408             pout.write("</tr><tr>\n");
409             pout.write("<th align=\"right\">getRequestURL:&nbsp;</th>");
410             pout.write("<td>"+notag(request.getRequestURL().toString())+"</td>");
411             pout.write("</tr><tr>\n");
412             pout.write("<th align=\"right\">getContextPath:&nbsp;</th>");
413             pout.write("<td>"+request.getContextPath()+"</td>");
414             pout.write("</tr><tr>\n");
415             pout.write("<th align=\"right\">getServletPath:&nbsp;</th>");
416             pout.write("<td>"+notag(request.getServletPath())+"</td>");
417             pout.write("</tr><tr>\n");
418             pout.write("<th align=\"right\">getPathInfo:&nbsp;</th>");
419             pout.write("<td>"+notag(request.getPathInfo())+"</td>");
420             pout.write("</tr><tr>\n");
421             pout.write("<th align=\"right\">getPathTranslated:&nbsp;</th>");
422             pout.write("<td>"+notag(request.getPathTranslated())+"</td>");
423             pout.write("</tr><tr>\n");
424             pout.write("<th align=\"right\">getQueryString:&nbsp;</th>");
425             pout.write("<td>"+notag(request.getQueryString())+"</td>");
426             pout.write("</tr><tr>\n");
427             
428             pout.write("<th align=\"right\">getProtocol:&nbsp;</th>");
429             pout.write("<td>"+request.getProtocol()+"</td>");
430             pout.write("</tr><tr>\n");
431             pout.write("<th align=\"right\">getScheme:&nbsp;</th>");
432             pout.write("<td>"+request.getScheme()+"</td>");
433             pout.write("</tr><tr>\n");
434             pout.write("<th align=\"right\">getServerName:&nbsp;</th>");
435             pout.write("<td>"+notag(request.getServerName())+"</td>");
436             pout.write("</tr><tr>\n");
437             pout.write("<th align=\"right\">getServerPort:&nbsp;</th>");
438             pout.write("<td>"+Integer.toString(request.getServerPort())+"</td>");
439             pout.write("</tr><tr>\n");
440             pout.write("<th align=\"right\">getLocalName:&nbsp;</th>");
441             pout.write("<td>"+request.getLocalName()+"</td>");
442             pout.write("</tr><tr>\n");
443             pout.write("<th align=\"right\">getLocalAddr:&nbsp;</th>");
444             pout.write("<td>"+request.getLocalAddr()+"</td>");
445             pout.write("</tr><tr>\n");
446             pout.write("<th align=\"right\">getLocalPort:&nbsp;</th>");
447             pout.write("<td>"+Integer.toString(request.getLocalPort())+"</td>");
448             pout.write("</tr><tr>\n");
449             pout.write("<th align=\"right\">getRemoteUser:&nbsp;</th>");
450             pout.write("<td>"+request.getRemoteUser()+"</td>");
451             pout.write("</tr><tr>\n");
452             pout.write("<th align=\"right\">getRemoteAddr:&nbsp;</th>");
453             pout.write("<td>"+request.getRemoteAddr()+"</td>");
454             pout.write("</tr><tr>\n");
455             pout.write("<th align=\"right\">getRemoteHost:&nbsp;</th>");
456             pout.write("<td>"+request.getRemoteHost()+"</td>");
457             pout.write("</tr><tr>\n");
458             pout.write("<th align=\"right\">getRemotePort:&nbsp;</th>");
459             pout.write("<td>"+request.getRemotePort()+"</td>");
460             pout.write("</tr><tr>\n");
461             pout.write("<th align=\"right\">getRequestedSessionId:&nbsp;</th>");
462             pout.write("<td>"+request.getRequestedSessionId()+"</td>");
463             pout.write("</tr><tr>\n");
464             pout.write("<th align=\"right\">isSecure():&nbsp;</th>");
465             pout.write("<td>"+request.isSecure()+"</td>");
466 
467             pout.write("</tr><tr>\n");
468             pout.write("<th align=\"right\">isUserInRole(admin):&nbsp;</th>");
469             pout.write("<td>"+request.isUserInRole("admin")+"</td>");
470 
471             pout.write("</tr><tr>\n");
472             pout.write("<th align=\"right\">getLocale:&nbsp;</th>");
473             pout.write("<td>"+request.getLocale()+"</td>");
474             
475             Enumeration locales= request.getLocales();
476             while (locales.hasMoreElements())
477             {
478                 pout.write("</tr><tr>\n");
479                 pout.write("<th align=\"right\">getLocales:&nbsp;</th>");
480                 pout.write("<td>"+locales.nextElement()+"</td>");
481             }
482             pout.write("</tr><tr>\n");
483             
484             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Other HTTP Headers:</big></th>");
485             Enumeration h= request.getHeaderNames();
486             String name;
487             while (h.hasMoreElements())
488             {
489                 name= (String)h.nextElement();
490 
491                 Enumeration h2= request.getHeaders(name);
492                 while (h2.hasMoreElements())
493                 {
494                     String hv= (String)h2.nextElement();
495                     pout.write("</tr><tr>\n");
496                     pout.write("<th align=\"right\">"+notag(name)+":&nbsp;</th>");
497                     pout.write("<td>"+notag(hv)+"</td>");
498                 }
499             }
500 
501             pout.write("</tr><tr>\n");
502             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Request Parameters:</big></th>");
503             h= request.getParameterNames();
504             while (h.hasMoreElements())
505             {
506                 name= (String)h.nextElement();
507                 pout.write("</tr><tr>\n");
508                 pout.write("<th align=\"right\">"+notag(name)+":&nbsp;</th>");
509                 pout.write("<td>"+notag(request.getParameter(name))+"</td>");
510                 String[] values= request.getParameterValues(name);
511                 if (values == null)
512                 {
513                     pout.write("</tr><tr>\n");
514                     pout.write("<th align=\"right\">"+notag(name)+" Values:&nbsp;</th>");
515                     pout.write("<td>"+"NULL!"+"</td>");
516                 }
517                 else if (values.length > 1)
518                 {
519                     for (int i= 0; i < values.length; i++)
520                     {
521                         pout.write("</tr><tr>\n");
522                         pout.write("<th align=\"right\">"+notag(name)+"["+i+"]:&nbsp;</th>");
523                         pout.write("<td>"+notag(values[i])+"</td>");
524                     }
525                 }
526             }
527 
528             pout.write("</tr><tr>\n");
529             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Cookies:</big></th>");
530             Cookie[] cookies = request.getCookies();
531             for (int i=0; cookies!=null && i<cookies.length;i++)
532             {
533                 Cookie cookie = cookies[i];
534 
535                 pout.write("</tr><tr>\n");
536                 pout.write("<th align=\"right\">"+notag(cookie.getName())+":&nbsp;</th>");
537                 pout.write("<td>"+notag(cookie.getValue())+"</td>");
538             }
539             
540             String content_type=request.getContentType();
541             if (content_type!=null &&
542                 !content_type.startsWith("application/x-www-form-urlencoded") &&
543                 !content_type.startsWith("multipart/form-data"))
544             {
545                 pout.write("</tr><tr>\n");
546                 pout.write("<th align=\"left\" valign=\"top\" colspan=\"2\"><big><br/>Content:</big></th>");
547                 pout.write("</tr><tr>\n");
548                 pout.write("<td><pre>");
549                 char[] content= new char[4096];
550                 int len;
551                 try{
552                     Reader in=request.getReader();
553                     
554                     while((len=in.read(content))>=0)
555                         pout.write(notag(new String(content,0,len)));
556                 }
557                 catch(IOException e)
558                 {
559                     pout.write(e.toString());
560                 }
561                 
562                 pout.write("</pre></td>");
563             }
564             
565             
566             pout.write("</tr><tr>\n");
567             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Request Attributes:</big></th>");
568             Enumeration a= request.getAttributeNames();
569             while (a.hasMoreElements())
570             {
571                 name= (String)a.nextElement();
572                 pout.write("</tr><tr>\n");
573                 pout.write("<th align=\"right\" valign=\"top\">"+name.replace("."," .")+":&nbsp;</th>");
574                 pout.write("<td>"+"<pre>" + toString(request.getAttribute(name)) + "</pre>"+"</td>");
575             }            
576 
577             
578             pout.write("</tr><tr>\n");
579             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Servlet InitParameters:</big></th>");
580             a= getInitParameterNames();
581             while (a.hasMoreElements())
582             {
583                 name= (String)a.nextElement();
584                 pout.write("</tr><tr>\n");
585                 pout.write("<th align=\"right\">"+name+":&nbsp;</th>");
586                 pout.write("<td>"+ toString(getInitParameter(name)) +"</td>");
587             }
588 
589             pout.write("</tr><tr>\n");
590             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Context InitParameters:</big></th>");
591             a= getServletContext().getInitParameterNames();
592             while (a.hasMoreElements())
593             {
594                 name= (String)a.nextElement();
595                 pout.write("</tr><tr>\n");
596                 pout.write("<th align=\"right\" valign=\"top\">"+name.replace("."," .")+":&nbsp;</th>");
597                 pout.write("<td>"+ toString(getServletContext().getInitParameter(name)) + "</td>");
598             }
599 
600             pout.write("</tr><tr>\n");
601             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Context Attributes:</big></th>");
602             a= getServletContext().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                 pout.write("<td>"+"<pre>" + toString(getServletContext().getAttribute(name)) + "</pre>"+"</td>");
609             }
610 
611 
612             String res= request.getParameter("resource");
613             if (res != null && res.length() > 0)
614             {
615                 pout.write("</tr><tr>\n");
616                 pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Get Resource: \""+res+"\"</big></th>");
617                 
618                 pout.write("</tr><tr>\n");
619                 pout.write("<th align=\"right\">this.getClass().getResource(...):&nbsp;</th>");
620                 pout.write("<td>"+this.getClass().getResource(res)+"</td>");
621 
622                 pout.write("</tr><tr>\n");
623                 pout.write("<th align=\"right\">this.getClass().getClassLoader().getResource(...):&nbsp;</th>");
624                 pout.write("<td>"+this.getClass().getClassLoader().getResource(res)+"</td>");
625 
626                 pout.write("</tr><tr>\n");
627                 pout.write("<th align=\"right\">Thread.currentThread().getContextClassLoader().getResource(...):&nbsp;</th>");
628                 pout.write("<td>"+Thread.currentThread().getContextClassLoader().getResource(res)+"</td>");
629 
630                 pout.write("</tr><tr>\n");
631                 pout.write("<th align=\"right\">getServletContext().getResource(...):&nbsp;</th>");
632                 try{pout.write("<td>"+getServletContext().getResource(res)+"</td>");}
633                 catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
634             }
635             
636             pout.write("</tr></table>\n");
637 
638             /* ------------------------------------------------------------ */
639             pout.write("<h2>Request Wrappers</h2>\n");
640             ServletRequest rw=request;
641             int w=0;
642             while (rw !=null)
643             {
644                 pout.write((w++)+": "+rw.getClass().getName()+"<br/>");
645                 if (rw instanceof HttpServletRequestWrapper)
646                     rw=((HttpServletRequestWrapper)rw).getRequest();
647                 else if (rw instanceof ServletRequestWrapper)
648                     rw=((ServletRequestWrapper)rw).getRequest();
649                 else
650                     rw=null;
651             }
652 
653             /* ------------------------------------------------------------ */
654             pout.write("<h2>Response Wrappers</h2>\n");
655             ServletResponse rsw=response;
656             w=0;
657             while (rsw !=null)
658             {
659                 pout.write((w++)+": "+rsw.getClass().getName()+"<br/>");
660                 if (rsw instanceof HttpServletResponseWrapper)
661                     rsw=((HttpServletResponseWrapper)rsw).getResponse();
662                 else if (rsw instanceof ServletResponseWrapper)
663                     rsw=((ServletResponseWrapper)rsw).getResponse();
664                 else
665                     rsw=null;
666             }
667             
668             pout.write("<br/>");
669             pout.write("<h2>International Characters (UTF-8)</h2>");
670             pout.write("LATIN LETTER SMALL CAPITAL AE<br/>\n");
671             pout.write("Directly uni encoded(\\u1d01): \u1d01<br/>");
672             pout.write("HTML reference (&amp;AElig;): &AElig;<br/>");
673             pout.write("Decimal (&amp;#7425;): &#7425;<br/>");
674             pout.write("Javascript unicode (\\u1d01) : <script language='javascript'>document.write(\"\u1d01\");</script><br/>");
675             pout.write("<br/>");
676             pout.write("<h2>Form to generate GET content</h2>");
677             pout.write("<form method=\"GET\" action=\""+response.encodeURL(getURI(request))+"\">");
678             pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"value\"/><br/>\n");
679             pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\">");
680             pout.write("</form>");
681 
682             pout.write("<br/>");
683             
684             pout.write("<h2>Form to generate POST content</h2>");
685             pout.write("<form method=\"POST\" accept-charset=\"utf-8\" action=\""+response.encodeURL(getURI(request))+"\">");
686             pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"value\"/><br/>\n");
687             pout.write("Select: <select multiple name=\"Select\">\n");
688             pout.write("<option>ValueA</option>");
689             pout.write("<option>ValueB1,ValueB2</option>");
690             pout.write("<option>ValueC</option>");
691             pout.write("</select><br/>");
692             pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\"><br/>");
693             pout.write("</form>");
694             pout.write("<br/>");
695             
696             pout.write("<h2>Form to generate UPLOAD content</h2>");
697             pout.write("<form method=\"POST\" enctype=\"multipart/form-data\" accept-charset=\"utf-8\" action=\""+response.encodeURL(getURI(request))+"\">");
698             pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"comment\"/><br/>\n");
699             pout.write("File 1: <input type=\"file\" name=\"file1\" /><br/>\n");
700             pout.write("File 2: <input type=\"file\" name=\"file2\" /><br/>\n");
701             pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\"><br/>");
702             pout.write("</form>");
703 
704             pout.write("<h2>Form to set Cookie</h2>");
705             pout.write("<form method=\"POST\" action=\""+response.encodeURL(getURI(request))+"\">");
706             pout.write("cookie: <input type=\"text\" name=\"cookie\" /><br/>\n");
707             pout.write("value: <input type=\"text\" name=\"cookiev\" /><br/>\n");
708             pout.write("<input type=\"submit\" name=\"Action\" value=\"setCookie\">");
709             pout.write("</form>\n");
710             
711             pout.write("<h2>Form to get Resource</h2>");
712             pout.write("<form method=\"POST\" action=\""+response.encodeURL(getURI(request))+"\">");
713             pout.write("resource: <input type=\"text\" name=\"resource\" /><br/>\n");
714             pout.write("<input type=\"submit\" name=\"Action\" value=\"getResource\">");
715             pout.write("</form>\n");
716         }
717         catch (Exception e)
718         {
719             getServletContext().log("dump", e);
720         }
721         
722         String lines= request.getParameter("lines");
723         if (lines!=null)
724         {
725             char[] line = "<span>A line of characters. Blah blah blah blah.  blooble blooble</span></br>\n".toCharArray();
726             for (int l=Integer.parseInt(lines);l-->0;)
727             {
728                 pout.write("<span>"+l+" </span>");
729                 pout.write(line);
730             }
731         }
732         
733         pout.write("</body>\n</html>\n");
734         
735         pout.close();
736 
737         if (pi != null)
738         {
739             if ("/ex4".equals(pi))
740                 throw new ServletException("test ex4", new Throwable());
741             if ("/ex5".equals(pi))
742                 throw new IOException("test ex5");
743             if ("/ex6".equals(pi))
744                 throw new UnavailableException("test ex6");
745         }
746 
747 
748     }
749 
750     /* ------------------------------------------------------------ */
751     public String getServletInfo()
752     {
753         return "Dump Servlet";
754     }
755 
756     /* ------------------------------------------------------------ */
757     public synchronized void destroy()
758     {
759     }
760 
761     /* ------------------------------------------------------------ */
762     private String getURI(HttpServletRequest request)
763     {
764         String uri= (String)request.getAttribute("javax.servlet.forward.request_uri");
765         if (uri == null)
766             uri= request.getRequestURI();
767         return uri;
768     }
769 
770     /* ------------------------------------------------------------ */
771     private static String toString(Object o)
772     {
773         if (o == null)
774             return null;
775 
776         try
777         {
778             if (o.getClass().isArray())
779             {
780                 StringBuffer sb = new StringBuffer();
781                 if (!o.getClass().getComponentType().isPrimitive())
782                 {
783                     Object[] array= (Object[])o;
784                     for (int i= 0; i < array.length; i++)
785                     {
786                         if (i > 0)
787                             sb.append("\n");
788                         sb.append(array.getClass().getComponentType().getName());
789                         sb.append("[");
790                         sb.append(i);
791                         sb.append("]=");
792                         sb.append(toString(array[i]));
793                     }
794                     return sb.toString();
795                 }
796                 else
797                 { 
798                     int length = Array.getLength(o);
799                     for (int i=0;i<length;i++)
800                     {
801                         if (i > 0)
802                             sb.append("\n");
803                         sb.append(o.getClass().getComponentType().getName()); 
804                         sb.append("[");
805                         sb.append(i);
806                         sb.append("]=");
807                         sb.append(toString(Array.get(o, i)));
808                     }
809                     return sb.toString();
810                 }
811             }
812             else
813                 return o.toString();
814         }
815         catch (Exception e)
816         {
817             return e.toString();
818         }
819     }
820 
821     private String notag(String s)
822     {
823         if (s==null)
824             return "null";
825         s=StringUtil.replace(s,"&","&amp;");
826         s=StringUtil.replace(s,"<","&lt;");
827         s=StringUtil.replace(s,">","&gt;");
828         return s;
829     }
830 }