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1   //
2   //  ========================================================================
3   //  Copyright (c) 1995-2012 Mort Bay Consulting Pty. Ltd.
4   //  ------------------------------------------------------------------------
5   //  All rights reserved. This program and the accompanying materials
6   //  are made available under the terms of the Eclipse Public License v1.0
7   //  and Apache License v2.0 which accompanies this distribution.
8   //
9   //      The Eclipse Public License is available at
10  //      http://www.eclipse.org/legal/epl-v10.html
11  //
12  //      The Apache License v2.0 is available at
13  //      http://www.opensource.org/licenses/apache2.0.php
14  //
15  //  You may elect to redistribute this code under either of these licenses.
16  //  ========================================================================
17  //
18  
19  package com.acme;
20  import java.io.BufferedWriter;
21  import java.io.File;
22  import java.io.IOException;
23  import java.io.InputStream;
24  import java.io.OutputStream;
25  import java.io.OutputStreamWriter;
26  import java.io.PrintWriter;
27  import java.io.Reader;
28  import java.lang.reflect.Array;
29  import java.lang.reflect.Field;
30  import java.net.URL;
31  import java.util.Collections;
32  import java.util.Collection;
33  import java.util.Date;
34  import java.util.Enumeration;
35  import java.util.Locale;
36  import java.util.Timer;
37  import java.util.TimerTask;
38  
39  import javax.servlet.ServletConfig;
40  import javax.servlet.ServletContext;
41  import javax.servlet.ServletException;
42  import javax.servlet.ServletRequest;
43  import javax.servlet.ServletRequestWrapper;
44  import javax.servlet.ServletResponse;
45  import javax.servlet.ServletResponseWrapper;
46  import javax.servlet.UnavailableException;
47  import javax.servlet.http.Cookie;
48  import javax.servlet.http.HttpServlet;
49  import javax.servlet.http.HttpServletRequest;
50  import javax.servlet.http.HttpServletRequestWrapper;
51  import javax.servlet.http.HttpServletResponse;
52  import javax.servlet.http.HttpServletResponseWrapper;
53  
54  import org.eclipse.jetty.continuation.Continuation;
55  import org.eclipse.jetty.continuation.ContinuationListener;
56  import org.eclipse.jetty.continuation.ContinuationSupport;
57  import org.eclipse.jetty.http.HttpHeaders;
58  import org.eclipse.jetty.util.IO;
59  import org.eclipse.jetty.util.StringUtil;
60  import org.eclipse.jetty.util.log.Log;
61  import org.eclipse.jetty.util.log.Logger;
62  
63  
64  
65  /* ------------------------------------------------------------ */
66  /** Dump Servlet Request.
67   * 
68   */
69  public class Dump extends HttpServlet
70  {
71      private static final Logger LOG = Log.getLogger(Dump.class);
72  
73      boolean fixed;
74      Timer _timer;
75      
76      /* ------------------------------------------------------------ */
77      @Override
78      public void init(ServletConfig config) throws ServletException
79      {
80      	super.init(config);
81      	
82      	if (config.getInitParameter("unavailable")!=null && !fixed)
83      	{
84      	    
85      	    fixed=true;
86      	    throw new UnavailableException("Unavailable test",Integer.parseInt(config.getInitParameter("unavailable")));
87      	}
88      	
89      	_timer=new Timer(true);
90      }
91  
92      /* ------------------------------------------------------------ */
93      @Override
94      public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
95      {
96          doGet(request, response);
97      }
98  
99      /* ------------------------------------------------------------ */
100     @Override
101     public void doPut(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
102     {
103         byte[] buffer = new byte[8192];
104         int len=request.getContentLength();
105         int c=0;
106         InputStream in=request.getInputStream();
107         while (c<len)
108         {
109             int l = in.read(buffer);
110             if (l<0)
111                 break;
112             c+=l;
113         }
114         request.setAttribute("PUT",c+"bytes");
115         doGet(request, response);
116     }
117 
118     /* ------------------------------------------------------------ */
119     @Override
120     public void doGet(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException
121     {
122         if (!request.isUserInRole("user")) 
123         {
124             try 
125             {
126                 request.login("user", "password");
127             } 
128             catch(ServletException se) 
129             {
130             	se.printStackTrace();
131             }
132         }
133         
134         // Handle a dump of data
135         final String data= request.getParameter("data");
136         final String chars= request.getParameter("chars");
137         final String block= request.getParameter("block");
138         final String dribble= request.getParameter("dribble");
139         final boolean flush= request.getParameter("flush")!=null?Boolean.parseBoolean(request.getParameter("flush")):false;
140 
141         
142         if(request.getPathInfo()!=null && request.getPathInfo().toLowerCase(Locale.ENGLISH).indexOf("script")!=-1)
143         {
144             response.sendRedirect(response.encodeRedirectURL(getServletContext().getContextPath() + "/dump/info"));
145             return;
146         }
147             
148         request.setCharacterEncoding("UTF-8");
149         
150         if (request.getParameter("busy")!=null)
151         {
152             long end = System.currentTimeMillis()+Long.parseLong(request.getParameter("busy"));
153             while(System.currentTimeMillis()<end)
154             {}
155         }
156         
157         if (request.getParameter("empty")!=null)
158         {
159             response.setStatus(200);
160             response.flushBuffer();
161             return;
162         }
163         
164         if (request.getParameter("sleep")!=null)
165         {
166             try
167             {
168                 long s = Long.parseLong(request.getParameter("sleep"));
169                 if (request.getHeader(HttpHeaders.EXPECT)!=null &&request.getHeader(HttpHeaders.EXPECT).indexOf("102")>=0)
170                 {
171                     Thread.sleep(s/2);
172                     response.sendError(102);
173                     Thread.sleep(s/2);
174                 }
175                 else
176                     Thread.sleep(s);
177             }
178             catch (InterruptedException e)
179             {
180                 return;
181             }
182             catch (Exception e)
183             {
184                 throw new ServletException(e);
185             }
186         }
187 
188         if (request.getAttribute("RESUME")==null && request.getParameter("resume")!=null)
189         {
190             request.setAttribute("RESUME",Boolean.TRUE);
191 
192             final long resume=Long.parseLong(request.getParameter("resume"));
193             final Continuation continuation = ContinuationSupport.getContinuation(request);
194             _timer.schedule(new TimerTask()
195             {
196                 @Override
197                 public void run()
198                 {
199                     continuation.resume();
200                 }
201             },resume);
202   
203         }
204 
205         if (request.getParameter("complete")!=null)
206         {
207             final long complete=Long.parseLong(request.getParameter("complete"));
208             _timer.schedule(new TimerTask()
209             {
210                 @Override
211                 public void run()
212                 {
213                     try
214                     {
215                         response.setContentType("text/html");
216                         response.getOutputStream().println("<h1>COMPLETED</h1>"); 
217                         Continuation continuation = ContinuationSupport.getContinuation(request);
218                         continuation.complete();
219                     }
220                     catch(Exception e)
221                     {
222                         e.printStackTrace();
223                     }
224                 }
225             },complete);
226         }
227         
228         if (request.getParameter("suspend")!=null && request.getAttribute("SUSPEND")!=Boolean.TRUE)
229         {
230             request.setAttribute("SUSPEND",Boolean.TRUE);
231             try
232             {
233                 Continuation continuation = ContinuationSupport.getContinuation(request);
234                 continuation.setTimeout(Long.parseLong(request.getParameter("suspend")));
235                 continuation.suspend();
236                 
237                 continuation.addContinuationListener(new ContinuationListener()
238                 {   
239                     public void onTimeout(Continuation continuation)
240                     {
241                         response.addHeader("Dump","onTimeout");
242                         try
243                         {
244                             if (!dump(response,data,chars,block,dribble,flush))
245                             {
246                                 response.setContentType("text/plain");
247                                 response.getOutputStream().println("EXPIRED");
248                             }
249                             continuation.complete();
250                         }
251                         catch (IOException e)
252                         {
253                             LOG.ignore(e);
254                         }
255                     }
256                     
257                     public void onComplete(Continuation continuation)
258                     {
259                         response.addHeader("Dump","onComplete");
260                     }
261                 });
262                 
263                 continuation.undispatch();
264             }
265             catch(Exception e)
266             {
267                 throw new ServletException(e);
268             }
269         }        
270             
271         request.setAttribute("Dump", this);
272         getServletContext().setAttribute("Dump",this);
273         // getServletContext().log("dump "+request.getRequestURI());
274 
275         // Force a content length response
276         String length= request.getParameter("length");
277         if (length != null && length.length() > 0)
278         {
279             response.setContentLength(Integer.parseInt(length));
280         }
281 
282         // Handle a dump of data
283         if (dump(response,data,chars,block,dribble,flush))
284             return;
285         
286         // handle an exception
287         String info= request.getPathInfo();
288         if (info != null && info.endsWith("Exception"))
289         {
290             try
291             {
292                 throw (Throwable) Thread.currentThread().getContextClassLoader().loadClass(info.substring(1)).newInstance();
293             }
294             catch (Throwable th)
295             {
296                 throw new ServletException(th);
297             }
298         }
299 
300         // test a reset
301         String reset= request.getParameter("reset");
302         if (reset != null && reset.length() > 0)
303         {
304             response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
305             response.setHeader("SHOULD_NOT","BE SEEN");
306             response.reset();
307         }
308         
309         
310         // handle an redirect
311         String redirect= request.getParameter("redirect");
312         if (redirect != null && redirect.length() > 0)
313         {
314             response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
315             response.sendRedirect(response.encodeRedirectURL(redirect));
316             try
317             {
318                 response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
319             }
320             catch(IOException e)
321             {
322                 // ignored as stream is closed.
323             }
324             return;
325         }
326 
327         // handle an error
328         String error= request.getParameter("error");
329         if (error != null && error.length() > 0 && request.getAttribute("javax.servlet.error.status_code")==null)
330         {
331             response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
332             response.sendError(Integer.parseInt(error));
333             try
334             {
335                 response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
336             }
337             catch(IllegalStateException e)
338             {
339                 try
340                 {
341                     response.getWriter().println("NOR THIS!!"); 
342                 }
343                 catch(IOException e2){}
344             }
345             catch(IOException e){}
346             return;
347         }
348 
349         // Handle a extra headers 
350         String headers= request.getParameter("headers");
351         if (headers != null && headers.length() > 0)
352         {
353             long h=Long.parseLong(headers);
354             for (int i=0;i<h;i++)
355                 response.addHeader("Header"+i,"Value"+i);
356         }
357 
358         String buffer= request.getParameter("buffer");
359         if (buffer != null && buffer.length() > 0)
360             response.setBufferSize(Integer.parseInt(buffer));
361 
362         String charset= request.getParameter("charset");
363         if (charset==null)
364             charset="UTF-8";
365         response.setCharacterEncoding(charset);
366         response.setContentType("text/html");
367 
368         if (info != null && info.indexOf("Locale/") >= 0)
369         {
370             try
371             {
372                 String locale_name= info.substring(info.indexOf("Locale/") + 7);
373                 Field f= java.util.Locale.class.getField(locale_name);
374                 response.setLocale((Locale)f.get(null));
375             }
376             catch (Exception e)
377             {
378                 e.printStackTrace();
379                 response.setLocale(Locale.getDefault());
380             }
381         }
382 
383         String cn= request.getParameter("cookie");
384         String cv=request.getParameter("cookiev");
385         if (cn!=null && cv!=null)
386         {
387             Cookie cookie= new Cookie(cn, cv);
388             if (request.getParameter("version")!=null)
389                 cookie.setVersion(Integer.parseInt(request.getParameter("version")));
390             cookie.setComment("Cookie from dump servlet");
391             response.addCookie(cookie);
392         }
393 
394         String pi= request.getPathInfo();
395         if (pi != null && pi.startsWith("/ex"))
396         {
397             OutputStream out= response.getOutputStream();
398             out.write("</H1>This text should be reset</H1>".getBytes());
399             if ("/ex0".equals(pi))
400                 throw new ServletException("test ex0", new Throwable());
401             else if ("/ex1".equals(pi))
402                 throw new IOException("test ex1");
403             else if ("/ex2".equals(pi))
404                 throw new UnavailableException("test ex2");
405             else if (pi.startsWith("/ex3/"))
406                 throw new UnavailableException("test ex3",Integer.parseInt(pi.substring(5)));
407             throw new RuntimeException("test");
408         }
409 
410         if ("true".equals(request.getParameter("close")))
411             response.setHeader("Connection","close");
412 
413         String buffered= request.getParameter("buffered");
414         
415         PrintWriter pout=null;
416         
417         try
418         {
419             pout =response.getWriter();
420         }
421         catch(IllegalStateException e)
422         {
423             pout=new PrintWriter(new OutputStreamWriter(response.getOutputStream(),charset));
424         }
425         if (buffered!=null)
426             pout = new PrintWriter(new BufferedWriter(pout,Integer.parseInt(buffered)));
427         
428         try
429         {
430             pout.write("<html>\n<body>\n");
431             pout.write("<h1>Dump Servlet</h1>\n");
432             pout.write("<table width=\"95%\">");
433             pout.write("<tr>\n");
434             pout.write("<th align=\"right\">getMethod:&nbsp;</th>");
435             pout.write("<td>" + notag(request.getMethod())+"</td>");
436             pout.write("</tr><tr>\n");
437             pout.write("<th align=\"right\">getContentLength:&nbsp;</th>");
438             pout.write("<td>"+Integer.toString(request.getContentLength())+"</td>");
439             pout.write("</tr><tr>\n");
440             pout.write("<th align=\"right\">getContentType:&nbsp;</th>");
441             pout.write("<td>"+notag(request.getContentType())+"</td>");
442             pout.write("</tr><tr>\n");
443             pout.write("<th align=\"right\">getRequestURI:&nbsp;</th>");
444             pout.write("<td>"+notag(request.getRequestURI())+"</td>");
445             pout.write("</tr><tr>\n");
446             pout.write("<th align=\"right\">getRequestURL:&nbsp;</th>");
447             pout.write("<td>"+notag(request.getRequestURL().toString())+"</td>");
448             pout.write("</tr><tr>\n");
449             pout.write("<th align=\"right\">getContextPath:&nbsp;</th>");
450             pout.write("<td>"+request.getContextPath()+"</td>");
451             pout.write("</tr><tr>\n");
452             pout.write("<th align=\"right\">getServletPath:&nbsp;</th>");
453             pout.write("<td>"+notag(request.getServletPath())+"</td>");
454             pout.write("</tr><tr>\n");
455             pout.write("<th align=\"right\">getPathInfo:&nbsp;</th>");
456             pout.write("<td>"+notag(request.getPathInfo())+"</td>");
457             pout.write("</tr><tr>\n");
458             pout.write("<th align=\"right\">getPathTranslated:&nbsp;</th>");
459             pout.write("<td>"+notag(request.getPathTranslated())+"</td>");
460             pout.write("</tr><tr>\n");
461             pout.write("<th align=\"right\">getQueryString:&nbsp;</th>");
462             pout.write("<td>"+notag(request.getQueryString())+"</td>");
463             pout.write("</tr><tr>\n");
464             
465             pout.write("<th align=\"right\">getProtocol:&nbsp;</th>");
466             pout.write("<td>"+request.getProtocol()+"</td>");
467             pout.write("</tr><tr>\n");
468             pout.write("<th align=\"right\">getScheme:&nbsp;</th>");
469             pout.write("<td>"+request.getScheme()+"</td>");
470             pout.write("</tr><tr>\n");
471             pout.write("<th align=\"right\">getServerName:&nbsp;</th>");
472             pout.write("<td>"+notag(request.getServerName())+"</td>");
473             pout.write("</tr><tr>\n");
474             pout.write("<th align=\"right\">getServerPort:&nbsp;</th>");
475             pout.write("<td>"+Integer.toString(request.getServerPort())+"</td>");
476             pout.write("</tr><tr>\n");
477             pout.write("<th align=\"right\">getLocalName:&nbsp;</th>");
478             pout.write("<td>"+request.getLocalName()+"</td>");
479             pout.write("</tr><tr>\n");
480             pout.write("<th align=\"right\">getLocalAddr:&nbsp;</th>");
481             pout.write("<td>"+request.getLocalAddr()+"</td>");
482             pout.write("</tr><tr>\n");
483             pout.write("<th align=\"right\">getLocalPort:&nbsp;</th>");
484             pout.write("<td>"+Integer.toString(request.getLocalPort())+"</td>");
485             pout.write("</tr><tr>\n");
486             pout.write("<th align=\"right\">getRemoteUser:&nbsp;</th>");
487             pout.write("<td>"+request.getRemoteUser()+"</td>");
488             pout.write("</tr><tr>\n");
489             pout.write("<th align=\"right\">getUserPrincipal:&nbsp;</th>");
490             pout.write("<td>"+request.getUserPrincipal()+"</td>");
491             pout.write("</tr><tr>\n");
492             pout.write("<th align=\"right\">getRemoteAddr:&nbsp;</th>");
493             pout.write("<td>"+request.getRemoteAddr()+"</td>");
494             pout.write("</tr><tr>\n");
495             pout.write("<th align=\"right\">getRemoteHost:&nbsp;</th>");
496             pout.write("<td>"+request.getRemoteHost()+"</td>");
497             pout.write("</tr><tr>\n");
498             pout.write("<th align=\"right\">getRemotePort:&nbsp;</th>");
499             pout.write("<td>"+request.getRemotePort()+"</td>");
500             pout.write("</tr><tr>\n");
501             pout.write("<th align=\"right\">getRequestedSessionId:&nbsp;</th>");
502             pout.write("<td>"+request.getRequestedSessionId()+"</td>");
503             pout.write("</tr><tr>\n");
504             pout.write("<th align=\"right\">isSecure():&nbsp;</th>");
505             pout.write("<td>"+request.isSecure()+"</td>");
506 
507             pout.write("</tr><tr>\n");
508             pout.write("<th align=\"right\">isUserInRole(admin):&nbsp;</th>");
509             pout.write("<td>"+request.isUserInRole("admin")+"</td>");
510 
511             pout.write("</tr><tr>\n");
512             pout.write("<th align=\"right\">getLocale:&nbsp;</th>");
513             pout.write("<td>"+request.getLocale()+"</td>");
514             
515             Enumeration locales= request.getLocales();
516             while (locales.hasMoreElements())
517             {
518                 pout.write("</tr><tr>\n");
519                 pout.write("<th align=\"right\">getLocales:&nbsp;</th>");
520                 pout.write("<td>"+locales.nextElement()+"</td>");
521             }
522             pout.write("</tr><tr>\n");
523             
524             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Other HTTP Headers:</big></th>");
525             Enumeration h= request.getHeaderNames();
526             String name;
527             while (h.hasMoreElements())
528             {
529                 name= (String)h.nextElement();
530 
531                 Enumeration h2= request.getHeaders(name);
532                 while (h2.hasMoreElements())
533                 {
534                     String hv= (String)h2.nextElement();
535                     pout.write("</tr><tr>\n");
536                     pout.write("<th align=\"right\">"+notag(name)+":&nbsp;</th>");
537                     pout.write("<td>"+notag(hv)+"</td>");
538                 }
539             }
540 
541             pout.write("</tr><tr>\n");
542             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Request Parameters:</big></th>");
543             h= request.getParameterNames();
544             while (h.hasMoreElements())
545             {
546                 name= (String)h.nextElement();
547                 pout.write("</tr><tr>\n");
548                 pout.write("<th align=\"right\">"+notag(name)+":&nbsp;</th>");
549                 pout.write("<td>"+notag(request.getParameter(name))+"</td>");
550                 String[] values= request.getParameterValues(name);
551                 if (values == null)
552                 {
553                     pout.write("</tr><tr>\n");
554                     pout.write("<th align=\"right\">"+notag(name)+" Values:&nbsp;</th>");
555                     pout.write("<td>"+"NULL!"+"</td>");
556                 }
557                 else if (values.length > 1)
558                 {
559                     for (int i= 0; i < values.length; i++)
560                     {
561                         pout.write("</tr><tr>\n");
562                         pout.write("<th align=\"right\">"+notag(name)+"["+i+"]:&nbsp;</th>");
563                         pout.write("<td>"+notag(values[i])+"</td>");
564                     }
565                 }
566             }
567 
568             pout.write("</tr><tr>\n");
569             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Cookies:</big></th>");
570             Cookie[] cookies = request.getCookies();
571             for (int i=0; cookies!=null && i<cookies.length;i++)
572             {
573                 Cookie cookie = cookies[i];
574 
575                 pout.write("</tr><tr>\n");
576                 pout.write("<th align=\"right\">"+notag(cookie.getName())+":&nbsp;</th>");
577                 pout.write("<td>"+notag(cookie.getValue())+"</td>");
578             }
579             
580             String content_type=request.getContentType();
581             if (content_type!=null &&
582                 !content_type.startsWith("application/x-www-form-urlencoded") &&
583                 !content_type.startsWith("multipart/form-data"))
584             {
585                 pout.write("</tr><tr>\n");
586                 pout.write("<th align=\"left\" valign=\"top\" colspan=\"2\"><big><br/>Content:</big></th>");
587                 pout.write("</tr><tr>\n");
588                 pout.write("<td><pre>");
589                 char[] content= new char[4096];
590                 int len;
591                 try{
592                     Reader in=request.getReader();
593                     
594                     while((len=in.read(content))>=0)
595                         pout.write(notag(new String(content,0,len)));
596                 }
597                 catch(IOException e)
598                 {
599                     pout.write(e.toString());
600                 }
601                 
602                 pout.write("</pre></td>");
603             }
604             
605             pout.write("</tr><tr>\n");
606             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Request Attributes:</big></th>");
607             Enumeration a= request.getAttributeNames();
608             while (a.hasMoreElements())
609             {
610                 name= (String)a.nextElement();
611                 pout.write("</tr><tr>\n");
612                 pout.write("<th align=\"right\" valign=\"top\">"+name.replace("."," .")+":&nbsp;</th>");
613                 Object value=request.getAttribute(name);
614                 if (value instanceof File)
615                 {
616                     File file = (File)value;
617                     pout.write("<td>"+"<pre>" + file.getName()+" ("+file.length()+" "+new Date(file.lastModified())+ ")</pre>"+"</td>");
618                 }
619                 else
620                     pout.write("<td>"+"<pre>" + toString(request.getAttribute(name)) + "</pre>"+"</td>");
621             }
622             request.setAttribute("org.eclipse.jetty.servlet.MultiPartFilter.files",null);
623 
624             
625             pout.write("</tr><tr>\n");
626             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Servlet InitParameters:</big></th>");
627             a= getInitParameterNames();
628             while (a.hasMoreElements())
629             {
630                 name= (String)a.nextElement();
631                 pout.write("</tr><tr>\n");
632                 pout.write("<th align=\"right\">"+name+":&nbsp;</th>");
633                 pout.write("<td>"+ toString(getInitParameter(name)) +"</td>");
634             }
635 
636             pout.write("</tr><tr>\n");
637             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Context InitParameters:</big></th>");
638             a= getServletContext().getInitParameterNames();
639             while (a.hasMoreElements())
640             {
641                 name= (String)a.nextElement();
642                 pout.write("</tr><tr>\n");
643                 pout.write("<th align=\"right\" valign=\"top\">"+name.replace("."," .")+":&nbsp;</th>");
644                 pout.write("<td>"+ toString(getServletContext().getInitParameter(name)) + "</td>");
645             }
646 
647             pout.write("</tr><tr>\n");
648             pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Context Attributes:</big></th>");
649             a= getServletContext().getAttributeNames();
650             while (a.hasMoreElements())
651             {
652                 name= (String)a.nextElement();
653                 pout.write("</tr><tr>\n");
654                 pout.write("<th align=\"right\" valign=\"top\">"+name.replace("."," .")+":&nbsp;</th>");
655                 pout.write("<td>"+"<pre>" + toString(getServletContext().getAttribute(name)) + "</pre>"+"</td>");
656             }
657 
658             String res= request.getParameter("resource");
659             if (res != null && res.length() > 0)
660             {
661                 pout.write("</tr><tr>\n");
662                 pout.write("<th align=\"left\" colspan=\"2\"><big><br/>Get Resource: \""+res+"\"</big></th>");
663 
664                 pout.write("</tr><tr>\n");
665                 pout.write("<th align=\"right\">getServletContext().getResource(...):&nbsp;</th>");
666                 try{pout.write("<td>"+getServletContext().getResource(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().getResourcePaths(...):&nbsp;</th>");
671                 try{pout.write("<td>"+getServletContext().getResourcePaths(res)+"</td>");}
672                 catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
673                 
674                 pout.write("</tr><tr>\n");
675                 pout.write("<th align=\"right\">getServletContext().getContext(...):&nbsp;</th>");
676                 
677                 ServletContext context = getServletContext().getContext(res);
678                 pout.write("<td>"+context+"</td>");
679                 
680                 if (context!=null)
681                 {
682                     pout.write("</tr><tr>\n");
683                     pout.write("<th align=\"right\">getServletContext().getContext(...).getResource(...):&nbsp;</th>");
684                     try{pout.write("<td>"+context.getResource(res)+"</td>");}
685                     catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
686                     
687                     pout.write("</tr><tr>\n");
688                     pout.write("<th align=\"right\">getServletContext().getContext(...).getResourcePaths(...):&nbsp;</th>");
689                     try{pout.write("<td>"+context.getResourcePaths(res)+"</td>");}
690                     catch(Exception e) {pout.write("<td>"+"" +e+"</td>");}
691                     
692                     String cp=context.getContextPath();
693                     if (cp==null || "/".equals(cp))
694                         cp="";
695                     pout.write("</tr><tr>\n");
696                     pout.write("<th align=\"right\">getServletContext().getContext(...),getRequestDispatcher(...):&nbsp;</th>");
697                     pout.write("<td>"+getServletContext().getContext(res).getRequestDispatcher(res.substring(cp.length()))+"</td>");
698                 }
699 
700                 pout.write("</tr><tr>\n");
701                 pout.write("<th align=\"right\">this.getClass().getResource(...):&nbsp;</th>");
702                 pout.write("<td>"+this.getClass().getResource(res)+"</td>");
703 
704                 pout.write("</tr><tr>\n");
705                 pout.write("<th align=\"right\">this.getClass().getClassLoader().getResource(...):&nbsp;</th>");
706                 pout.write("<td>"+this.getClass().getClassLoader().getResource(res)+"</td>");
707 
708                 pout.write("</tr><tr>\n");
709                 pout.write("<th align=\"right\">Thread.currentThread().getContextClassLoader().getResource(...):&nbsp;</th>");
710                 pout.write("<td>"+Thread.currentThread().getContextClassLoader().getResource(res)+"</td>");
711                 pout.write("</tr><tr>\n");
712                 pout.write("<th align=\"right\">Thread.currentThread().getContextClassLoader().getResources(...):&nbsp;</th>");
713                 Enumeration<URL> urls = Thread.currentThread().getContextClassLoader().getResources(res);
714                 if (urls==null)
715                     pout.write("<td>null</td>");
716                 else
717                     pout.write("<td>"+Collections.list(urls)+"</td>");
718 
719             }
720             
721             pout.write("</tr></table>\n");
722 
723             /* ------------------------------------------------------------ */
724             pout.write("<h2>Request Wrappers</h2>\n");
725             ServletRequest rw=request;
726             int w=0;
727             while (rw !=null)
728             {
729                 pout.write((w++)+": "+rw.getClass().getName()+"<br/>");
730                 if (rw instanceof HttpServletRequestWrapper)
731                     rw=((HttpServletRequestWrapper)rw).getRequest();
732                 else if (rw instanceof ServletRequestWrapper)
733                     rw=((ServletRequestWrapper)rw).getRequest();
734                 else
735                     rw=null;
736             }
737 
738             /* ------------------------------------------------------------ */
739             pout.write("<h2>Response Wrappers</h2>\n");
740             ServletResponse rsw=response;
741             w=0;
742             while (rsw !=null)
743             {
744                 pout.write((w++)+": "+rsw.getClass().getName()+"<br/>");
745                 if (rsw instanceof HttpServletResponseWrapper)
746                     rsw=((HttpServletResponseWrapper)rsw).getResponse();
747                 else if (rsw instanceof ServletResponseWrapper)
748                     rsw=((ServletResponseWrapper)rsw).getResponse();
749                 else
750                     rsw=null;
751             }
752             
753             pout.write("<br/>");
754             pout.write("<h2>International Characters (UTF-8)</h2>");
755             pout.write("LATIN LETTER SMALL CAPITAL AE<br/>\n");
756             pout.write("Directly uni encoded(\\u1d01): \u1d01<br/>");
757             pout.write("HTML reference (&amp;AElig;): &AElig;<br/>");
758             pout.write("Decimal (&amp;#7425;): &#7425;<br/>");
759             pout.write("Javascript unicode (\\u1d01) : <script language='javascript'>document.write(\"\u1d01\");</script><br/>");
760             pout.write("<br/>");
761             pout.write("<h2>Form to generate GET content</h2>");
762             pout.write("<form method=\"GET\" action=\""+response.encodeURL(getURI(request))+"\">");
763             pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"value\"/><br/>\n");
764             pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\">");
765             pout.write("</form>");
766 
767             pout.write("<br/>");
768             
769             pout.write("<h2>Form to generate POST content</h2>");
770             pout.write("<form method=\"POST\" accept-charset=\"utf-8\" action=\""+response.encodeURL(getURI(request))+"\">");
771             pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"value\"/><br/>\n");
772             pout.write("Select: <select multiple name=\"Select\">\n");
773             pout.write("<option>ValueA</option>");
774             pout.write("<option>ValueB1,ValueB2</option>");
775             pout.write("<option>ValueC</option>");
776             pout.write("</select><br/>");
777             pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\"><br/>");
778             pout.write("</form>");
779             pout.write("<br/>");
780             
781             pout.write("<h2>Form to generate UPLOAD content</h2>");
782             pout.write("<form method=\"POST\" enctype=\"multipart/form-data\" accept-charset=\"utf-8\" action=\""+
783                     response.encodeURL(getURI(request))+(request.getQueryString()==null?"":("?"+request.getQueryString()))+
784                     "\">");
785             pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"comment\"/><br/>\n");
786             pout.write("File 1: <input type=\"file\" name=\"file1\" /><br/>\n");
787             pout.write("File 2: <input type=\"file\" name=\"file2\" /><br/>\n");
788             pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\"><br/>");
789             pout.write("</form>");
790 
791             pout.write("<h2>Form to set Cookie</h2>");
792             pout.write("<form method=\"POST\" action=\""+response.encodeURL(getURI(request))+"\">");
793             pout.write("cookie: <input type=\"text\" name=\"cookie\" /><br/>\n");
794             pout.write("value: <input type=\"text\" name=\"cookiev\" /><br/>\n");
795             pout.write("<input type=\"submit\" name=\"Action\" value=\"setCookie\">");
796             pout.write("</form>\n");
797             
798             pout.write("<h2>Form to get Resource</h2>");
799             pout.write("<form method=\"POST\" action=\""+response.encodeURL(getURI(request))+"\">");
800             pout.write("resource: <input type=\"text\" name=\"resource\" /><br/>\n");
801             pout.write("<input type=\"submit\" name=\"Action\" value=\"getResource\">");
802             pout.write("</form>\n");
803         }
804         catch (Exception e)
805         {
806             getServletContext().log("dump "+e);
807         }
808         
809         String lines= request.getParameter("lines");
810         if (lines!=null)
811         {
812             char[] line = "<span>A line of characters. Blah blah blah blah.  blooble blooble</span></br>\n".toCharArray();
813             for (int l=Integer.parseInt(lines);l-->0;)
814             {
815                 pout.write("<span>"+l+" </span>");
816                 pout.write(line);
817             }
818         }
819         
820         pout.write("</body>\n</html>\n");
821         
822         pout.close();
823 
824         if (pi != null)
825         {
826             if ("/ex4".equals(pi))
827                 throw new ServletException("test ex4", new Throwable());
828             if ("/ex5".equals(pi))
829                 throw new IOException("test ex5");
830             if ("/ex6".equals(pi))
831                 throw new UnavailableException("test ex6");
832         }
833 
834 
835     }
836 
837 
838     /* ------------------------------------------------------------ */
839     @Override
840     public String getServletInfo()
841     {
842         return "Dump Servlet";
843     }
844 
845     /* ------------------------------------------------------------ */
846     @Override
847     public synchronized void destroy()
848     {
849         _timer.cancel();
850     }
851 
852     /* ------------------------------------------------------------ */
853     private String getURI(HttpServletRequest request)
854     {
855         String uri= (String)request.getAttribute("javax.servlet.forward.request_uri");
856         if (uri == null)
857             uri= request.getRequestURI();
858         return uri;
859     }
860 
861     /* ------------------------------------------------------------ */
862     private static String toString(Object o)
863     {
864         if (o == null)
865             return null;
866 
867         try
868         {
869             if (o.getClass().isArray())
870             {
871                 StringBuffer sb = new StringBuffer();
872                 if (!o.getClass().getComponentType().isPrimitive())
873                 {
874                     Object[] array= (Object[])o;
875                     for (int i= 0; i < array.length; i++)
876                     {
877                         if (i > 0)
878                             sb.append("\n");
879                         sb.append(array.getClass().getComponentType().getName());
880                         sb.append("[");
881                         sb.append(i);
882                         sb.append("]=");
883                         sb.append(toString(array[i]));
884                     }
885                     return sb.toString();
886                 }
887                 else
888                 { 
889                     int length = Array.getLength(o);
890                     for (int i=0;i<length;i++)
891                     {
892                         if (i > 0)
893                             sb.append("\n");
894                         sb.append(o.getClass().getComponentType().getName()); 
895                         sb.append("[");
896                         sb.append(i);
897                         sb.append("]=");
898                         sb.append(toString(Array.get(o, i)));
899                     }
900                     return sb.toString();
901                 }
902             }
903             else
904                 return o.toString();
905         }
906         catch (Exception e)
907         {
908             return e.toString();
909         }
910     }
911 
912     private boolean dump(HttpServletResponse response, String data, String chars, String block, String dribble, boolean flush) throws IOException
913     {
914         if (data != null && data.length() > 0)
915         {
916             long d=Long.parseLong(data);
917             int b=(block!=null&&block.length()>0)?Integer.parseInt(block):50;
918             byte[] buf=new byte[b];
919             for (int i=0;i<b;i++)
920             {
921                 
922                 buf[i]=(byte)('0'+(i%10));
923                 if (i%10==9)
924                     buf[i]=(byte)'\n';
925             }
926             buf[0]='o';
927             OutputStream out=response.getOutputStream();
928             response.setContentType("text/plain");
929             while (d > 0)
930             {
931                 if (b==1)
932                 {
933                     out.write(d%80==0?'\n':'.');
934                     d--;
935                 }
936                 else if (d>=b)
937                 {
938                     out.write(buf);
939                     d=d-b;
940                 }
941                 else
942                 {
943                     out.write(buf,0,(int)d);
944                     d=0;
945                 }
946                 
947                 if (dribble!=null)
948                 {
949                     out.flush();
950                     try
951                     {
952                         Thread.sleep(Long.parseLong(dribble));
953                     }
954                     catch (Exception e)
955                     {
956                         e.printStackTrace();
957                         break;
958                     }
959                 }
960                 
961             }
962             
963             if (flush)
964                 out.flush();
965             
966             return true;
967         }
968 
969         // Handle a dump of data
970         if (chars != null && chars.length() > 0)
971         {
972             long d=Long.parseLong(chars);
973             int b=(block!=null&&block.length()>0)?Integer.parseInt(block):50;
974             char[] buf=new char[b];
975             for (int i=0;i<b;i++)
976             {
977                 buf[i]=(char)('0'+(i%10));
978                 if (i%10==9)
979                     buf[i]='\n';
980             }
981             buf[0]='o';
982             response.setContentType("text/plain");
983             PrintWriter out=response.getWriter();
984             while (d > 0 && !out.checkError())
985             {
986                 if (b==1)
987                 {
988                     out.write(d%80==0?'\n':'.');
989                     d--;
990                 }
991                 else if (d>=b)
992                 {
993                     out.write(buf);
994                     d=d-b;
995                 }
996                 else
997                 {
998                     out.write(buf,0,(int)d);
999                     d=0;
1000                 }
1001             }
1002             return true;
1003         }    
1004         return false;
1005     }
1006     
1007     private String notag(String s)
1008     {
1009         if (s==null)
1010             return "null";
1011         s=StringUtil.replace(s,"&","&amp;");
1012         s=StringUtil.replace(s,"<","&lt;");
1013         s=StringUtil.replace(s,">","&gt;");
1014         return s;
1015     }
1016 }