manageserver.java

java 写的一个新闻发布系统

// $Id: ManageServer.java,v 1.5 2002/05/23 14:34:01 shuber Exp $
//
//                                   ____.
//                       __/\ ______|    |__/\.     _______
//            __   .____|    |       \   |    +----+       \
//    _______|  /--|    |    |    -   \  _    |    :    -   \_________
//   \\______: :---|    :    :           |    :    |         \________>
//           |__\---\_____________:______:    :____|____:_____\
//                                      /_____|
//
//              . . . i n   j a h i a   w e   t r u s t . . .
//
//
//  ManageServer
//
//  31.03.2001  AK  added in jahia.
//

package org.jahia.admin.server;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.net.*;

import org.jahia.bin.*;
import org.jahia.utils.properties.*;
import org.jahia.utils.*;



/**
 * desc:  This class is used by the administration to manage the
 * server settings of a jahia portal, like the mail notification service (when
 * jahia or a user generate error(s), or like the java server home disk path,
 * mail server, etc.
 *
 * Copyright:    Copyright (c) 2002
 * Company:      Jahia Ltd
 *
 * @author Alexandre Kraft
 * @version 1.0
 */
public class ManageServer
{
    private static final String CLASS_NAME  =  JahiaAdministration.CLASS_NAME;
    private static final String JSP_PATH    =  JahiaAdministration.JSP_PATH;

    private static       PropertiesManager  properties;



    /**
     * Default constructor.
     * @author  Alexandre Kraft
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    public ManageServer( HttpServletRequest    request,
                         HttpServletResponse   response,
                         HttpSession           session )
    throws Throwable
    {
        properties =  new PropertiesManager( Jahia.getJahiaPropertiesFileName() );
        userRequestDispatcher( request, response, session );
    } // end constructor



    /**
     * This method is used like a dispatcher for user requests.
     * @author  Alexandre Kraft
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void userRequestDispatcher( HttpServletRequest    request,
                                        HttpServletResponse   response,
                                        HttpSession           session )
    throws Throwable
    {
        String operation =  request.getParameter("sub");

        if(operation.equals("display")) {
            displaySettings( request, response, session );
        } else if(operation.equals("process")) {
            processSettings( request, response, session );
        }
    } // userRequestDispatcher



    /**
     * Display the server settings page, using doRedirect().
     * @author  Alexandre Kraft
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void displaySettings( HttpServletRequest    request,
                                  HttpServletResponse   response,
                                  HttpSession           session )
    throws IOException, ServletException
    {
        // retrieve previous form values...
        String jahiaServerMailServer         =  (String) session.getAttribute(CLASS_NAME + "jahiaServerMailServer");
        String jahiaServerMailAdministrator  =  (String) session.getAttribute(CLASS_NAME + "jahiaServerMailAdministrator");
        String jahiaServerMailFrom           =  (String) session.getAttribute(CLASS_NAME + "jahiaServerMailFrom");
        String jahiaServerNotificationLevel  =  (String) session.getAttribute(CLASS_NAME + "jahiaServerNotificationLevel");

        // set default values (if necessary)...
        if(jahiaServerMailServer == null)        {  jahiaServerMailServer         =  properties.getProperty("mail_server");         }
        if(jahiaServerMailFrom == null)          {  jahiaServerMailFrom           =  properties.getProperty("mail_from");           }
        if(jahiaServerMailAdministrator == null) {  jahiaServerMailAdministrator  =  properties.getProperty("mail_administrator");  }
        if(jahiaServerNotificationLevel == null) {  jahiaServerNotificationLevel  =  properties.getProperty("mail_paranoia");       }

        // set request attributes...
        request.setAttribute("jahiaServerMailServer",         jahiaServerMailServer);
        request.setAttribute("jahiaServerMailAdministrator",  jahiaServerMailAdministrator);
        request.setAttribute("jahiaServerMailFrom",           jahiaServerMailFrom);
        request.setAttribute("jahiaServerNotificationLevel",  jahiaServerNotificationLevel);

        JahiaAdministration.doRedirect( request, response, session, JSP_PATH + "config_server.jsp" );
    } // end displaySettings



    /**
     * Process and check the validity of the server settings page. If they are
     * not valid, display the server settings page to the user.
     * @author  Alexandre Kraft
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void processSettings( HttpServletRequest   request,
                                  HttpServletResponse  response,
                                  HttpSession          session )
    throws IOException, ServletException
    {
        boolean processError =  true;

        // get form values...
        String jahiaServerMailServer         =  (String) request.getParameter("mailserver").trim();
        String jahiaServerMailAdministrator  =  (String) request.getParameter("mailadministrator").trim();
        String jahiaServerMailFrom           =  (String) request.getParameter("mailfrom").trim();
        String jahiaServerNotificationLevel  =  (String) request.getParameter("mailparanoia").trim();

        // check form validity...
        if(!jahiaServerNotificationLevel.equals("Disabled")) {
            String jahiaDisplayMessage = "";
            if(jahiaServerMailServer.length() == 0) {
                jahiaDisplayMessage  =  "Mail Server must be set.";
                jahiaDisplayMessage +=  " Otherwise, set level to 'Disabled'.";
                session.setAttribute(CLASS_NAME + "jahiaDisplayMessage",  jahiaDisplayMessage);
            } else if(jahiaServerMailAdministrator.length() == 0) {
                jahiaDisplayMessage  =  "Mail Administrator must be set.";
                jahiaDisplayMessage +=  " Otherwise, set level to 'Disabled'.";
                session.setAttribute(CLASS_NAME + "jahiaDisplayMessage",  jahiaDisplayMessage);
            } else if(jahiaServerMailFrom.length() == 0) {
                jahiaDisplayMessage  =  "Mail From must be set.";
                jahiaDisplayMessage +=  " Otherwise, set level to 'Disabled'.";
                session.setAttribute(CLASS_NAME + "jahiaDisplayMessage",  jahiaDisplayMessage);
            } else if(!DataValidator.isValidEmail(jahiaServerMailAdministrator)) {
                session.setAttribute(CLASS_NAME + "jahiaDisplayMessage",  "Please enter valid e-mail address (admin).");
            } else if(!DataValidator.isValidEmail(jahiaServerMailFrom)) {
                session.setAttribute(CLASS_NAME + "jahiaDisplayMessage",  "Please enter valid e-mail address (from).");
            } else {
                processError = false;
            }
        } else {
            processError = false;
        }

        // set session with new attributes...
        session.setAttribute(CLASS_NAME + "jahiaServerMailServer",         jahiaServerMailServer);
        session.setAttribute(CLASS_NAME + "jahiaServerMailAdministrator",  jahiaServerMailAdministrator);
        session.setAttribute(CLASS_NAME + "jahiaServerMailFrom",           jahiaServerMailFrom);
        session.setAttribute(CLASS_NAME + "jahiaServerNotificationLevel",  jahiaServerNotificationLevel);

        if(processError) {
            displaySettings( request, response, session );
        } else {
            storeSettings( request, response, session );
        }
    } // end processSettings



    /**
     * Store new settings for the server page and redirect to the final page.
     * @author  Alexandre Kraft
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void storeSettings( HttpServletRequest   request,
                                HttpServletResponse  response,
                                HttpSession          session )
    throws IOException, ServletException
    {
        // set new values in the properties manager...
        properties.setProperty("mail_server",               (String) session.getAttribute(CLASS_NAME + "jahiaServerMailServer"));
        properties.setProperty("mail_administrator",        (String) session.getAttribute(CLASS_NAME + "jahiaServerMailAdministrator"));
        properties.setProperty("mail_from",                 (String) session.getAttribute(CLASS_NAME + "jahiaServerMailFrom"));
        properties.setProperty("mail_paranoia",             (String) session.getAttribute(CLASS_NAME + "jahiaServerNotificationLevel"));

        // write in the jahia properties file...
        properties.storeProperties();

        request.setAttribute( "processMessage",  "Please restart Jahia for the changes to take effect." );
        session.setAttribute( CLASS_NAME + "jahiaDisplayMessage",  Jahia.COPYRIGHT );
        JahiaAdministration.doRedirect( request, response, session, JSP_PATH + "finish.jsp" );
    } // end storeSettings


} // end ManageServer