/*
* Copyright (c) 1998-2010 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.server.webapp;
import java.io.IOException;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Map;
import javax.servlet.AsyncContext;
import javax.servlet.DispatcherType;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.caucho.server.dispatch.Invocation;
import com.caucho.server.http.CauchoRequestWrapper;
import com.caucho.server.http.Form;
import com.caucho.util.HashMapImpl;
import com.caucho.util.IntMap;
import com.caucho.util.L10N;
import com.caucho.vfs.Encoding;
public class ForwardRequest extends CauchoRequestWrapper {
private static final IntMap _forwardAttributeMap = new IntMap();
private static final L10N L = new L10N(ForwardRequest.class);
private static final String REQUEST_URI
= "javax.servlet.forward.request_uri";
private static final String CONTEXT_PATH
= "javax.servlet.forward.context_path";
private static final String SERVLET_PATH
= "javax.servlet.forward.servlet_path";
private static final String PATH_INFO
= "javax.servlet.forward.path_info";
private static final String QUERY_STRING
= "javax.servlet.forward.query_string";
private static final int REQUEST_URI_CODE = 1;
private static final int CONTEXT_PATH_CODE = 2;
private static final int SERVLET_PATH_CODE = 3;
private static final int PATH_INFO_CODE = 4;
private static final int QUERY_STRING_CODE = 5;
// the wrapped request
private Invocation _invocation;
private ForwardResponse _response;
private HashMapImpl<String,String[]> _filledForm;
public ForwardRequest()
{
_response = new ForwardResponse(this);
}
public ForwardRequest(HttpServletRequest request,
HttpServletResponse response,
Invocation invocation)
{
super(request);
_response = new ForwardResponse(this, response);
setResponse(_response);
_invocation = invocation;
}
protected Invocation getInvocation()
{
return _invocation;
}
/**
* Starts the request
*/
void startRequest()
{
_response.startRequest();
}
void finishRequest(boolean isValid)
throws IOException
{
finishRequest();
if (isValid)
_response.finishRequest();
}
public ForwardResponse getResponse()
{
return _response;
}
public ServletContext getServletContext()
{
return _invocation.getWebApp();
}
public DispatcherType getDispatcherType()
{
return DispatcherType.FORWARD;
}
//
// HttpServletRequest
//
@Override
public String getRequestURI()
{
return _invocation.getURI();
}
@Override
public String getContextPath()
{
return _invocation.getContextPath();
}
@Override
public String getServletPath()
{
return _invocation.getServletPath();
}
@Override
public String getPathInfo()
{
return _invocation.getPathInfo();
}
@Override
public String getQueryString()
{
return calculateQueryString();
}
protected String calculateQueryString()
{
// server/10j2
// server/1ks7 vs server/1233
String queryString = _invocation.getQueryString();
if (queryString != null)
return queryString;
return getRequest().getQueryString();
}
//
// CauchoRequest
//
public String getPageURI()
{
return _invocation.getURI();
}
public String getPageContextPath()
{
return _invocation.getContextPath();
}
public String getPageServletPath()
{
return _invocation.getServletPath();
}
public String getPagePathInfo()
{
return _invocation.getPathInfo();
}
public String getPageQueryString()
{
return getQueryString();
}
public WebApp getWebApp()
{
return _invocation.getWebApp();
}
@Override
public boolean isAsyncSupported()
{
return _invocation.isAsyncSupported() && getRequest().isAsyncSupported();
}
@Override
public AsyncContext startAsync()
throws IllegalStateException
{
if (! isAsyncSupported())
throw new IllegalStateException(L.l("The servlet '{0}' at '{1}' does not support async because the servlet or one of the filters does not support asynchronous mode.",
getServletName(), getServletPath()));
return super.startAsync();
}
public String getServletName()
{
if (_invocation != null) {
return _invocation.getServletName();
}
else
return null;
}
/*
public ServletResponse getServletResponse()
{
CauchoRequest cRequest = (CauchoRequest) _request;
return cRequest.getServletResponse();
}
*/
//
// attributes
//
public Object getAttribute(String name)
{
switch (_forwardAttributeMap.get(name)) {
case REQUEST_URI_CODE:
return unwrapRequest().getRequestURI();
case CONTEXT_PATH_CODE:
return unwrapRequest().getContextPath();
case SERVLET_PATH_CODE:
return unwrapRequest().getServletPath();
case PATH_INFO_CODE:
return unwrapRequest().getPathInfo();
case QUERY_STRING_CODE:
return unwrapRequest().getQueryString();
default:
return super.getAttribute(name);
}
}
public HttpServletRequest unwrapRequest() {
HttpServletRequest request = this.getRequest();
while (request instanceof ForwardRequest) {
request = ((ForwardRequest) request).getRequest();
}
return request;
}
//
// parameter/form
//
/**
* Returns an enumeration of the form names.
*/
public Enumeration<String> getParameterNames()
{
if (_filledForm == null)
_filledForm = parseQuery();
return Collections.enumeration(_filledForm.keySet());
}
/**
* Returns a map of the form.
*/
public Map<String,String[]> getParameterMap()
{
if (_filledForm == null)
_filledForm = parseQuery();
return Collections.unmodifiableMap(_filledForm);
}
/**
* Returns the form's values for the given name.
*
* @param name key in the form
* @return value matching the key
*/
public String []getParameterValues(String name)
{
if (_filledForm == null)
_filledForm = parseQuery();
return (String []) _filledForm.get(name);
}
/**
* Returns the form primary value for the given name.
*/
public String getParameter(String name)
{
String []values = getParameterValues(name);
if (values != null && values.length > 0)
return values[0];
else
return null;
}
private HashMapImpl<String,String[]> parseQuery()
{
String javaEncoding = Encoding.getJavaName(getCharacterEncoding());
HashMapImpl<String,String[]> form = new HashMapImpl<String,String[]>();
form.putAll(getRequest().getParameterMap());
Form formParser = Form.allocate();
try {
String queryString = _invocation.getQueryString();
String oldQueryString = getRequest().getQueryString();
if (queryString != null && ! queryString.equals(oldQueryString)) {
formParser.parseQueryString(form, queryString, javaEncoding, false);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
return form;
}
static {
_forwardAttributeMap.put(REQUEST_URI, REQUEST_URI_CODE);
_forwardAttributeMap.put(CONTEXT_PATH, CONTEXT_PATH_CODE);
_forwardAttributeMap.put(SERVLET_PATH, SERVLET_PATH_CODE);
_forwardAttributeMap.put(PATH_INFO, PATH_INFO_CODE);
_forwardAttributeMap.put(QUERY_STRING, QUERY_STRING_CODE);
}
}
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