/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.wicket.protocol.http.servlet;
import java.io.IOException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.wicket.WicketRuntimeException;
import org.apache.wicket.request.Url;
import org.apache.wicket.request.UrlRenderer;
import org.apache.wicket.request.cycle.RequestCycle;
import org.apache.wicket.request.http.WebResponse;
import org.apache.wicket.util.lang.Args;
import org.apache.wicket.util.time.Time;
/**
* WebResponse that wraps a {@link ServletWebResponse}.
*
* @author Matej Knopp
*/
public class ServletWebResponse extends WebResponse
{
private final HttpServletResponse httpServletResponse;
private final ServletWebRequest webRequest;
private boolean redirect = false;
/**
* Construct.
*
* @param webRequest
* @param httpServletResponse
*/
public ServletWebResponse(ServletWebRequest webRequest, HttpServletResponse httpServletResponse)
{
Args.notNull(webRequest, "webRequest");
Args.notNull(httpServletResponse, "httpServletResponse");
this.httpServletResponse = httpServletResponse;
this.webRequest = webRequest;
}
@Override
public void addCookie(Cookie cookie)
{
httpServletResponse.addCookie(cookie);
}
@Override
public void clearCookie(Cookie cookie)
{
cookie.setMaxAge(0);
cookie.setValue(null);
addCookie(cookie);
}
@Override
public void setContentLength(long length)
{
httpServletResponse.addHeader("Content-Length", Long.toString(length));
}
@Override
public void setContentType(String mimeType)
{
httpServletResponse.setContentType(mimeType);
}
@Override
public void setDateHeader(String name, Time date)
{
Args.notNull(date, "date");
httpServletResponse.setDateHeader(name, date.getMilliseconds());
}
@Override
public void setHeader(String name, String value)
{
httpServletResponse.setHeader(name, value);
}
@Override
public void addHeader(String name, String value)
{
httpServletResponse.addHeader(name, value);
}
@Override
public void write(CharSequence sequence)
{
try
{
httpServletResponse.getWriter().append(sequence);
}
catch (IOException e)
{
throw new ResponseIOException(e);
}
}
@Override
public void write(byte[] array)
{
try
{
httpServletResponse.getOutputStream().write(array);
}
catch (IOException e)
{
throw new ResponseIOException(e);
}
}
@Override
public void write(byte[] array, int offset, int length)
{
try
{
httpServletResponse.getOutputStream().write(array, offset, length);
}
catch (IOException e)
{
throw new ResponseIOException(e);
}
}
@Override
public void setStatus(int sc)
{
httpServletResponse.setStatus(sc);
}
@Override
public void sendError(int sc, String msg)
{
try
{
if (msg == null)
{
httpServletResponse.sendError(sc);
}
else
{
httpServletResponse.sendError(sc, msg);
}
}
catch (IOException e)
{
throw new WicketRuntimeException(e);
}
}
@Override
public String encodeURL(CharSequence url)
{
Args.notNull(url, "url");
UrlRenderer urlRenderer = getUrlRenderer();
Url originalUrl = Url.parse(url);
/*
WICKET-4645 - always pass absolute url to the web container for encoding
because when REDIRECT_TO_BUFFER is in use Wicket may render PageB when
PageA is actually the requested one and the web container cannot resolve
the base url properly
*/
String fullUrl = urlRenderer.renderFullUrl(originalUrl);
String encodedFullUrl = httpServletResponse.encodeURL(fullUrl);
final String encodedUrl;
if (originalUrl.isFull())
{
encodedUrl = encodedFullUrl;
}
else
{
if (fullUrl.equals(encodedFullUrl))
{
// no encoding happened so just reuse the original url
encodedUrl = url.toString();
}
else
{
// get the relative url with the jsessionid encoded in it
Url _encoded = Url.parse(encodedFullUrl);
encodedUrl = urlRenderer.renderRelativeUrl(_encoded);
}
}
return encodedUrl;
}
private UrlRenderer getUrlRenderer()
{
RequestCycle requestCycle = RequestCycle.get();
if (requestCycle == null)
{
return new UrlRenderer(webRequest);
}
return requestCycle.getUrlRenderer();
}
@Override
public String encodeRedirectURL(CharSequence url)
{
Args.notNull(url, "url");
UrlRenderer urlRenderer = getUrlRenderer();
Url originalUrl = Url.parse(url);
/*
* WICKET-4645 - always pass absolute url to the web container for encoding because when
* REDIRECT_TO_BUFFER is in use Wicket may render PageB when PageA is actually the requested
* one and the web container cannot resolve the base url properly
*/
String fullUrl = urlRenderer.renderFullUrl(originalUrl);
String encodedFullUrl = httpServletResponse.encodeRedirectURL(fullUrl);
final String encodedUrl;
if (originalUrl.isFull())
{
encodedUrl = encodedFullUrl;
}
else
{
if (fullUrl.equals(encodedFullUrl))
{
// no encoding happened so just reuse the original url
encodedUrl = url.toString();
}
else
{
// get the relative url with the jsessionid encoded in it
Url _encoded = Url.parse(encodedFullUrl);
encodedUrl = urlRenderer.renderRelativeUrl(_encoded);
}
}
return encodedUrl;
}
@Override
public void sendRedirect(String url)
{
try
{
redirect = true;
url = encodeRedirectURL(url);
// wicket redirects should never be cached
disableCaching();
if (webRequest.isAjax())
{
httpServletResponse.setHeader("Ajax-Location", url);
/*
* usually the Ajax-Location header is enough and we do not need to the redirect url
* into the response, but sometimes the response is processed via an iframe (eg
* using multipart ajax handling) and the headers are not available because XHR is
* not used and that is the only way javascript has access to response headers.
*/
httpServletResponse.getWriter().write(
"<ajax-response><redirect><![CDATA[" + url + "]]></redirect></ajax-response>");
setContentType("text/xml;charset=" +
webRequest.getContainerRequest().getCharacterEncoding());
disableCaching();
}
else
{
if (url.startsWith("./"))
{
/*
* WICKET-4260 Tomcat does not canonalize urls, which leads to problems with IE
* when url is relative and starts with a dot
*/
url = url.substring(2);
}
httpServletResponse.sendRedirect(url);
}
}
catch (IOException e)
{
throw new WicketRuntimeException(e);
}
}
@Override
public boolean isRedirect()
{
return redirect;
}
@Override
public void flush()
{
try
{
HttpServletRequest httpServletRequest = webRequest.getContainerRequest();
if (httpServletRequest.isAsyncStarted() == false)
{
httpServletResponse.flushBuffer();
}
}
catch (IOException e)
{
throw new ResponseIOException(e);
}
}
@Override
public void reset()
{
super.reset();
httpServletResponse.reset();
redirect = false;
}
@Override
public HttpServletResponse getContainerResponse()
{
return httpServletResponse;
}
}