simpleauthplugin.java

Sun公司Dream项目

/*
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the "License").  You may not use this file except
 * in compliance with the License.
 *
 * You can obtain a copy of the license at
 * http://www.opensource.org/licenses/cddl1.php
 * See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * HEADER in each file and include the License file at
 * http://www.opensource.org/licenses/cddl1.php.  If 
 * applicable, add the following below this CDDL HEADER, 
 * with the fields enclosed by brackets "[]" replaced 
 * with your own identifying information: 
 * Portions Copyright [yyyy]
 * [name of copyright owner]
 */ 

/*
 * $(@)SimpleAuthPlugin.java $Revision: 1.1.1.1 $ $Date: 2006/07/24 21:50:15 $
 * 
 * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
 */
package com.sun.dream;

import javax.servlet.*;
import javax.servlet.http.*;

public class SimpleAuthPlugin implements AuthPlugin {
    
    HttpSession session;
    String loginPage;
    
    public SimpleAuthPlugin() {
        session = null;
        loginPage = "/shop/login.jsp";
    }
    
    public boolean checkCredentials(String pUserId, String pPassword) {
        // Not implemented
        return false;
    }
    
    public boolean authenticateUser(HttpServletRequest request, HttpServletResponse response) {
        session = request.getSession();
        if (session == null)
            System.err.println("Warning: AuthenticateUser: Session is null");
        String userId = (String) session.getAttribute("userid");
        
        if (userId == null) {
            System.out.println("AuthenticateUser: userid is null");
            String path_info = request.getPathInfo();
            String redirect_path = request.getServletPath();
            if (path_info != null)
                redirect_path += path_info;
            try {
                System.out.println("Request being forwarded to "+loginPage+"?jsp_path="+redirect_path);
                request.getRequestDispatcher(loginPage+"?jsp_path="+redirect_path).forward(request,response);
            } catch (Exception ex) {
                System.err.println("SimpleAuthPlugin: couldn't forward to login page");
                ex.printStackTrace();
                return false;
            }
        }
        System.out.println("AuthenticateUser: UserId: "+userId);
        if (userId == null)
            return false;
        else
            return true;
    }
    
    public String getUserId() {
        if (session == null)
            return null;
        String userId = (String) session.getAttribute("userid");
        return userId;
    }
    
    public String getPassword() {
        //Not implemented;
        return null;
    }
    
    public String getSessionId() {
        if (session == null)
            return null;
        else
            return session.getId();
    }
    
    public String decodeToken(HttpServletRequest httpRequest, HttpServletResponse httpResponse) {
        //Not implemented;
        return null;
    }
    
    public void logout(HttpServletRequest request, HttpServletResponse response) {
        if (session != null)
            session.invalidate();
        else
            request.getSession().invalidate();
        
        try {
            request.getRequestDispatcher(loginPage).forward(request,response);
        } catch (Exception ex) {
            System.err.println("SimpleAuthPlugin: couldn't forward to login page");
            ex.printStackTrace();
        }
        
    }
    
    public void setLoginPage(String pLoginPage) {
        if (pLoginPage != null)
            loginPage = pLoginPage;
    }
}