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