package lumis.portal.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;

public class ChangeHostIPFilter implements Filter
{
	@Override
	public void init(FilterConfig filterConfig) throws ServletException 
	{
	}
	
	@Override
	public void destroy() 
	{
	}
	
	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException 
	{
		chain.doFilter(new ChangedHostIPRequest((HttpServletRequest) request), response);
	}
	
	public static final class ChangedHostIPRequest extends HttpServletRequestWrapper
	{
		public ChangedHostIPRequest(HttpServletRequest request)
		{
			super(request);
		}
		
		@Override
		public String getRemoteAddr()
		{
			return "216.58.202.196";
		}
		
		@Override
		public String getRemoteHost()
		{
			return "216.58.202.196";
		}
	}
}