package com.neusoft.sso;

import java.util.Set;

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

/**************************************************
 * NAME : SsoLoginUtil.java
 * HISTORY
 * 2007-08-15 shanc  創建文件
 * 注意：該類是Sso組件的對外接口
 *************************************************/
public class SsoLoginUtil {
	/**
	 * 當用戶登錄成功時調用該方法，創建該用戶在本應用的記錄
	 * @param request
	 * @param paraName
	 */
	public static void createSso(HttpServletRequest request,String paraName){ 
		if(!Global.getSSOFlag()){
			return ;
		}
		HttpSession session = request.getSession();
		session.setAttribute(Global.getParaName(), paraName);
		ServletContext context = session.getServletContext();
		Set set = (Set)context.getAttribute(Global.SET_NAME);
		set.add(paraName);
	}
	
	/**
	 * 當用戶注銷時調用該方法，清除所有應用中維護的用戶表中的該用戶記錄
	 * @param request
	 * @param paraName
	 */
	public static void invalidateSso(HttpServletRequest request){
		if(!Global.getSSOFlag()){
			return ;
		}else{
			HttpSession session = request.getSession();
			String paraName = (String)session.getAttribute(Global.getParaName());
			ServletContext context = session.getServletContext();
			//清除所有應用中的該用戶記錄
			ContextManager.clearContext(context, paraName);
		}
	}
}