loginaction.java

First of all, the Applet-phone is a SIP User-Agent with audio and text messaging capabilities. But

/*
 * LoginAction.java
 *
 * Created on July 3, 2003, 12:01 PM
 */

package gov.nist.struts.webapp.login;

import gov.nist.security.authentication.UserTag;

import java.io.File;
import java.util.*;

import org.apache.log4j.Logger;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;

import javax.servlet.*;


/** 
 * This class represents the login action. It will find the user in the database
 * and load his services' information in the session context
 * @author DERUELLE Jean
 */
public class LoginAction extends org.apache.struts.action.Action {
    /** log4j logging*/
    static Logger logger = Logger.getLogger(LoginAction.class);
    
    /** Creates a new instance of LoginAction */
    public LoginAction() {
    }
    
    /**
     * @see org.apache.struts.action.Action#perform(org.apache.struts.action.ActionMapping actionMapping, org.apache.struts.action.ActionForm actionForm, javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse)
     */
    public org.apache.struts.action.ActionForward perform(org.apache.struts.action.ActionMapping actionMapping, org.apache.struts.action.ActionForm actionForm, javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse) throws java.io.IOException, javax.servlet.ServletException {
        //Get the application context                             
        ServletContext applicationContext=this.getServlet().getServletContext();    
        if (actionForm instanceof LoginForm) {
            LoginForm loginForm = (LoginForm) actionForm;
            //retrieve the user name
            String userName=loginForm.getUserName();
            //retrieve the password
            String password=loginForm.getPassword();
            //Identification
            UserTag user=this.login(userName,password);
            if(user==null){
                   ActionErrors errors = new ActionErrors();
                   errors.add("login", new ActionError("error.login.authenticate"));
                   saveErrors(httpServletRequest, errors);
                   return actionMapping.findForward("login.error");
            }            
            
            String group=user.getUserGroup();           
            //Put the user name in the session
            httpServletRequest.getSession().setAttribute("user",user);            
            //Load the services of the user
            logger.info("User " + userName + " belonging to the group : "+group+" logged");
            logger.info("Loading of all the services of the user " + userName);            
            logger.info("Services of the user " + userName+" loaded");
            
            //Get the upload directory name in the application context
            String uploadLocation=(String)applicationContext.getAttribute("uploadDirectory");
            //Set the path to upload the file
            String uploadPath=uploadLocation.concat(group)+File.separatorChar+userName;
            //Put the upload path in the session
            httpServletRequest.getSession().setAttribute(
				"uploadPath",
				uploadPath+File.separatorChar);
            if(group.equals("admin"))
                return actionMapping.findForward("admin");
            
            return actionMapping.findForward("monitor");
         }         
         //Should not happen
         return null;
    }
    
    /**
     * this method check the user database to see if the user exists
     * @param userName - identifier to retrieve the user in the database
     * @param password - password associated to the username to retrieve the user in the database
     * @return a UserTag object containing all the user information
     */
    public UserTag login(String userName,String password){
        //Get the application context                             
        ServletContext applicationContext=this.getServlet().getServletContext();    
        //Get the database of the users
        Vector users=(Vector)applicationContext.getAttribute("users");
        if(users!=null){
            for(int i=0;i<users.size();i++){
                UserTag user=(UserTag)users.elementAt(i);
                if(user.getUserName().equals(userName) && user.getUserPassword().equals(password))
                    return user;
            }  
        }
        return null;
    }
    
}