dump.java

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// ========================================================================
// Copyright 1996-2005 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at 
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================================================================

package com.acme;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Reader;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.util.Enumeration;
import java.util.Locale;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletRequestWrapper;
import javax.servlet.UnavailableException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;

import org.mortbay.util.StringUtil;
import org.mortbay.util.ajax.Continuation;
import org.mortbay.util.ajax.ContinuationSupport;



/* ------------------------------------------------------------ */
/** Dump Servlet Request.
 * 
 */
public class Dump extends HttpServlet
{
    static boolean fixed;
    /* ------------------------------------------------------------ */
    public void init(ServletConfig config) throws ServletException
    {
    	super.init(config);
    	
    	if (config.getInitParameter("unavailable")!=null && !fixed)
    	{
    	    
    	    fixed=true;
    	    throw new UnavailableException("Unavailable test",Integer.parseInt(config.getInitParameter("unavailable")));
    	}
    }

    /* ------------------------------------------------------------ */
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
    {
        doGet(request, response);
    }

    /* ------------------------------------------------------------ */
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
    {
        if(request.getPathInfo()!=null && request.getPathInfo().toLowerCase().indexOf("script")!=-1)
        {
            response.sendRedirect(getServletContext().getContextPath() + "/dump/info");
            return;
        }
            
        request.setCharacterEncoding("UTF-8");
        
        if (request.getParameter("empty")!=null)
        {
            response.setStatus(200);
            response.flushBuffer();
            return;
        }
        
        if (request.getParameter("sleep")!=null)
        {
            try
            {
                long s = Long.parseLong(request.getParameter("sleep"));
                Thread.sleep(s/2);
                response.sendError(102);
                Thread.sleep(s/2);
            }
            catch (InterruptedException e)
            {
                return;
            }
            catch (Exception e)
            {
                throw new ServletException(e);
            }
        }
        
        if (request.getParameter("continue")!=null)
        {
            try
            {
                Continuation continuation = ContinuationSupport.getContinuation(request, null);
                continuation.suspend(Long.parseLong(request.getParameter("continue")));
            }
            catch(Exception e)
            {
                throw new ServletException(e);
            }
        }
            
        request.setAttribute("Dump", this);
        getServletContext().setAttribute("Dump",this);
        // getServletContext().log("dump "+request.getRequestURI());

        // Force a content length response
        String length= request.getParameter("length");
        if (length != null && length.length() > 0)
        {
            response.setContentLength(Integer.parseInt(length));
        }

        // Handle a dump of data
        String data= request.getParameter("data");
        String block= request.getParameter("block");
        String dribble= request.getParameter("dribble");
        if (data != null && data.length() > 0)
        {
            int d=Integer.parseInt(data);
            int b=(block!=null&&block.length()>0)?Integer.parseInt(block):50;
            byte[] buf=new byte[b];
            for (int i=0;i<b;i++)
            {
                
                buf[i]=(byte)('0'+(i%10));
                if (i%10==9)
                    buf[i]=(byte)'\n';
            }
            buf[0]='o';
            OutputStream out=response.getOutputStream();
            response.setContentType("text/plain");
            while (d > 0)
            {
                if (b==1)
                {
                    out.write(d%80==0?'\n':'.');
                    d--;
                }
                else if (d>=b)
                {
                    out.write(buf);
                    d=d-b;
                }
                else
                {
                    out.write(buf,0,d);
                    d=0;
                }
                
                if (dribble!=null)
                {
                    out.flush();
                    try
                    {
                        Thread.sleep(Long.parseLong(dribble));
                    }
                    catch (Exception e)
                    {
                        e.printStackTrace();
                        break;
                    }
                }
                
            }
            
            return;
        }
        
        
        // handle an exception
        String info= request.getPathInfo();
        if (info != null && info.endsWith("Exception"))
        {
            try
            {
                throw (Throwable) Thread.currentThread().getContextClassLoader().loadClass(info.substring(1)).newInstance();
            }
            catch (Throwable th)
            {
                throw new ServletException(th);
            }
        }

        // test a reset
        String reset= request.getParameter("reset");
        if (reset != null && reset.length() > 0)
        {
            response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
            response.setHeader("SHOULD_NOT","BE SEEN");
            response.reset();
        }
        
        
        // handle an redirect
        String redirect= request.getParameter("redirect");
        if (redirect != null && redirect.length() > 0)
        {
            response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
            response.sendRedirect(redirect);
            try
            {
                response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
            }
            catch(IOException e)
            {
                // ignored as stream is closed.
            }
            return;
        }

        // handle an error
        String error= request.getParameter("error");
        if (error != null && error.length() > 0 && request.getAttribute("javax.servlet.error.status_code")==null)
        {
            response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
            response.sendError(Integer.parseInt(error));
            try
            {
                response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
            }
            catch(IllegalStateException e)
            {
                try
                {
                    response.getWriter().println("NOR THIS!!"); 
                }
                catch(IOException e2){}
            }
            catch(IOException e){}
            return;
        }


        String buffer= request.getParameter("buffer");
        if (buffer != null && buffer.length() > 0)
            response.setBufferSize(Integer.parseInt(buffer));

        String charset= request.getParameter("charset");
        if (charset==null)
            charset="UTF-8";
        response.setCharacterEncoding(charset);
        response.setContentType("text/html");

        if (info != null && info.indexOf("Locale/") >= 0)
        {
            try
            {
                String locale_name= info.substring(info.indexOf("Locale/") + 7);
                Field f= java.util.Locale.class.getField(locale_name);
                response.setLocale((Locale)f.get(null));
            }
            catch (Exception e)
            {
                e.printStackTrace();
                response.setLocale(Locale.getDefault());
            }
        }

        String cn= request.getParameter("cookie");
        String cv=request.getParameter("cookiev");
        if (cn!=null && cv!=null)
        {
            Cookie cookie= new Cookie(cn, cv);
            if (request.getParameter("version")!=null)
                cookie.setVersion(Integer.parseInt(request.getParameter("version")));
            cookie.setComment("Cookie from dump servlet");
            response.addCookie(cookie);
        }

        String pi= request.getPathInfo();
        if (pi != null && pi.startsWith("/ex"))
        {
            OutputStream out= response.getOutputStream();
            out.write("</H1>This text should be reset</H1>".getBytes());
            if ("/ex0".equals(pi))
                throw new ServletException("test ex0", new Throwable());
            else if ("/ex1".equals(pi))
                throw new IOException("test ex1");
            else if ("/ex2".equals(pi))
                throw new UnavailableException("test ex2");
            else if (pi.startsWith("/ex3/"))
                throw new UnavailableException("test ex3",Integer.parseInt(pi.substring(5)));
            throw new RuntimeException("test");
        }

        if ("true".equals(request.getParameter("close")))
            response.setHeader("Connection","close");

        String buffered= request.getParameter("buffered");
        
        PrintWriter pout=null;
        
        try
        {
            pout =response.getWriter();
        }
        catch(IllegalStateException e)
        {
            pout=new PrintWriter(new OutputStreamWriter(response.getOutputStream(),charset));
        }
        if (buffered!=null)
            pout = new PrintWriter(new BufferedWriter(pout,Integer.parseInt(buffered)));
        
        try
        {
            pout.write("<html>\n<body>\n");
            pout.write("<h1>Dump Servlet</h1>\n");
            pout.write("<table width=\"95%\">");
            pout.write("<tr>\n");
            pout.write("<th align=\"right\">getMethod:&nbsp;</th>");
            pout.write("<td>" + notag(request.getMethod())+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getContentLength:&nbsp;</th>");
            pout.write("<td>"+Integer.toString(request.getContentLength())+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getContentType:&nbsp;</th>");
            pout.write("<td>"+notag(request.getContentType())+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getRequestURI:&nbsp;</th>");
            pout.write("<td>"+notag(request.getRequestURI())+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getRequestURL:&nbsp;</th>");
            pout.write("<td>"+notag(request.getRequestURL().toString())+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getContextPath:&nbsp;</th>");
            pout.write("<td>"+request.getContextPath()+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getServletPath:&nbsp;</th>");
            pout.write("<td>"+notag(request.getServletPath())+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getPathInfo:&nbsp;</th>");
            pout.write("<td>"+notag(request.getPathInfo())+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getPathTranslated:&nbsp;</th>");
            pout.write("<td>"+notag(request.getPathTranslated())+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getQueryString:&nbsp;</th>");
            pout.write("<td>"+notag(request.getQueryString())+"</td>");

            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getProtocol:&nbsp;</th>");
            pout.write("<td>"+request.getProtocol()+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getScheme:&nbsp;</th>");
            pout.write("<td>"+request.getScheme()+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getServerName:&nbsp;</th>");
            pout.write("<td>"+notag(request.getServerName())+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getServerPort:&nbsp;</th>");
            pout.write("<td>"+Integer.toString(request.getServerPort())+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getLocalName:&nbsp;</th>");
            pout.write("<td>"+request.getLocalName()+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getLocalAddr:&nbsp;</th>");
            pout.write("<td>"+request.getLocalAddr()+"</td>");
            pout.write("</tr><tr>\n");
            pout.write("<th align=\"right\">getLocalPort:&nbsp;</th>");
            pout.write("<td>"+Integer.toString(request.getLocalPort())+"</td>");
            pout.write("</tr><tr>\n");