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