SecurityInterceptor.java

package com.hibu.chile.interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import com.hibu.chile.constant.Mappings;
import com.hibu.chile.constant.MsgManProps;
import com.hibu.chile.util.Validator;
import com.hibu.chile.web.UrlUtils;

/**
 * Login Interceptor
 * 
 * @author SANTIAGO\sergio.larios
 */
@Component
public class SecurityInterceptor implements HandlerInterceptor {
	
	/* *******************************************************
	 * ********************** Pre Handle *********************
	 * *******************************************************/
	
	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {

		if (!forceLoging) {
			return true;
		}
		
		HttpSession session = request.getSession();
		
		if (Validator.isNotNull(session)) {
			
			String userName = (String) session.getAttribute(USER_NAME);
			
			if (Validator.isBlank(userName)) {
				
				String lastPath = UrlUtils.getUri(request);
				session.setAttribute(LAST_PATH, lastPath);
				
			}
			else {
				
				request.setAttribute(USER_NAME, userName);
				
				return true;
			}
			
		}
		
		String ctxPath = request.getContextPath();
		
		if (Validator.isBlank(ctxPath)) {
			response.sendRedirect(Mappings.LOGIN);
		}
		else {
			response.sendRedirect(ctxPath + Mappings.LOGIN);
		}
		
		return false;
		
	}
	
	/* *******************************************************
	 * ********************* Post Handle *********************
	 * *******************************************************/
	
	@Override
	public void postHandle(HttpServletRequest request, HttpServletResponse response,
			Object handler, ModelAndView modelAndView) throws Exception {
		
	}
	
	/* *******************************************************
	 * ******************* After Completion ******************
	 * *******************************************************/
	
	@Override
	public void afterCompletion(HttpServletRequest request, HttpServletResponse response,
			Object handler, Exception ex) throws Exception {
		
	}
	
	/* *******************************
	 ******* Injected Variables ******
	 ******************************* */
	
	@Value(MsgManProps.FORCE_LOGIN)
	boolean forceLoging;
	
	/* *******************************
	 ******** Public Constants *******
	 ******************************* */

	public static final String USER_NAME = "authUserName";
	public static final String LAST_PATH = "authlastPath";
	
}