/* Copyright (c) 2001 - 2010 TOPP - www.openplans.org. All rights reserved.
* This code is licensed under the GPL 2.0 license, availible at the root
* application directory.
*/
package org.geoserver.platform;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.Principal;
import java.util.Enumeration;
import java.util.Locale;
import java.util.Map;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletInputStream;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpSession;
/**
* A servlet filter that allows for advanced dispatching.
* <p>
* This fiter allows for a single mapping from web.xml for all requests to the spring dispatcher.
* It creates a wrapper around the servlet request object that "fakes" the serveltPath property to
* make it look like the mapping was created in web.xml when in actuality it was created in spring.
* </p>
* @author Justin Deoliveira, OpenGeo
*
*/
public class AdvancedDispatchFilter implements Filter {
public void destroy() {
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
if (request instanceof HttpServletRequest) {
request = new AdvancedDispatchHttpRequest((HttpServletRequest) request);
}
chain.doFilter(request, response);
}
public void init(FilterConfig filterConfig) throws ServletException {
}
static class AdvancedDispatchHttpRequest extends HttpServletRequestWrapper {
String servletPath = null;
public AdvancedDispatchHttpRequest(HttpServletRequest delegate) {
super(delegate);
if (delegate.getClass().getSimpleName().endsWith("MockHttpServletRequest")) {
return;
}
String path = delegate.getPathInfo();
int slash = path.indexOf('/', 1);
if (slash > -1 ) {
this.servletPath = path.substring(0, slash);
}
else {
this.servletPath = path;
}
int question = this.servletPath.indexOf('?');
if (question > -1 ) {
this.servletPath = this.servletPath.substring(0, question);
}
}
public String getPathInfo() {
HttpServletRequest delegate = (HttpServletRequest) getRequest();
if(delegate.getPathInfo().startsWith(servletPath))
return delegate.getPathInfo().substring(servletPath.length());
else
return delegate.getPathInfo();
}
public String getServletPath() {
return servletPath != null ?
servletPath : ((HttpServletRequest)getRequest()).getServletPath();
}
}
}