managelogs.java

java 写的一个新闻发布系统

// $Id: ManageLogs.java,v 1.3 2002/04/03 17:18:57 pvollenweider Exp $
//
//                                   ____.
//                       __/\ ______|    |__/\.     _______
//            __   .____|    |       \   |    +----+       \
//    _______|  /--|    |    |    -   \  _    |    :    -   \_________
//   \\______: :---|    :    :           |    :    |         \________>
//           |__\---\_____________:______:    :____|____:_____\
//                                      /_____|
//
//              . . . i n   j a h i a   w e   t r u s t . . .
//
//
//  ManageLogs
//
//  01.04.2001  MJ  added in jahia.
//
//

package org.jahia.admin.audit;

import java.io.*;                                   // IOException
import java.util.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;


import org.jahia.bin.*;

import org.jahia.params.*;                      // ParamBean
import org.jahia.utils.*;
import org.jahia.utils.properties.*;
import org.jahia.data.events.*;                 // JahiaEventListenerInterface
import org.jahia.settings.*;                    // JahiaPrivateSettings
import org.jahia.registries.*;                  // ServicesRegistry, ListenersRegistry

import org.jahia.services.pages.*;              // JahiaPageDB, JahiaPageUtilsDB
import org.jahia.services.audit.*;              // JahiaAuditLogManager
import org.jahia.services.usermanager.*;        // JahiaUserManager



/**
 * desc: This class provides the business methods for audit
 * log management, from the JahiaAdministration servlet.
 *
 * Copyright:    Copyright (c) 2002
 * Company:      Jahia Ltd
 *
 * @author Mikhael Janson
 * @version 1.0
 */
public class ManageLogs
{
    private static final String     CLASS_NAME              =  JahiaAdministration.CLASS_NAME;
    private static final String     JSP_PATH                =  JahiaAdministration.JSP_PATH;
    private static final String     LOGGING_EVENT_LISTENER  = "org.jahia.services.audit.LoggingEventListener";

    private static JahiaAuditLogManagerService  lMgr;
    private static JahiaListenersRegistry       lReg;



    /**
    * Default constructor.
    * @author  Alexandre Kraft
    *
    * @param   request       Servlet request.
    * @param   response      Servlet response.
    * @param   session       Servlet session for the current user.
    */
    public ManageLogs( HttpServletRequest    request,
                       HttpServletResponse   response,
                       HttpSession           session )

    throws Throwable
    {
        lReg  =  JahiaListenersRegistry.getInstance();

        ServicesRegistry       sReg  =  ServicesRegistry.getInstance();
        if (sReg != null)      lMgr  =  sReg.getJahiaAuditLogManagerService();

        userRequestDispatcher( request, response, session );
    } // end constructor



    /**
     * This method serves as a dispatcher for user requests.
     * @author  Alexandre Kraft
     * @author  Mikhael Janson
     *
     * @param   req      Servlet request.
     * @param   res      Servlet response.
     * @param   sess     Servlet session for the current user.
     */
    private void userRequestDispatcher( HttpServletRequest    req,
                                        HttpServletResponse   res,
                                        HttpSession           sess )
    throws IOException, ServletException
    {

        String op =  req.getParameter("sub");

        if(op.equals("settings"))            displaySettings( req, res, sess );
        else if(op.equals("view"))           displayView( req, res, sess );
        else if(op.equals("flushconfirm"))   displayFlush( req, res, sess );
        else if(op.equals("manage"))         processSettings( req, res, sess );
        else if(op.equals("flush"))          processFlush( req, res, sess );
        else if(op.equals("enable"))         processEnable( req, res, sess );
        else if(op.equals("disable"))        processDisable( req, res, sess );

    } // userRequestDispatcher



    /**
     * Display a UI for audit log management, using doRedirect().
     *
     * @author Mikhael Janson
     * @param   req       the HttpServletRequest object
     * @param   res       the HttpServletResponse object
     * @param   sess      the HttpSession object
     */
    private void displaySettings( HttpServletRequest   req,
                                  HttpServletResponse  res,
                                  HttpSession          sess )
    throws IOException, ServletException
    {

        String   jahiaDisplayMessage =  (String)  sess.getAttribute(CLASS_NAME + "jahiaDisplayMessage");
        boolean  logEnabled          =  true;
        String   maxLogs             =  "";

        if(lReg != null) {

            // get log config and set default values...
            logEnabled = (lReg.getListener(LOGGING_EVENT_LISTENER) == null) ? false : true ;

            if(logEnabled) {
                maxLogs  = JahiaPrivateSettings.readJahiaPropertiesFile().getProperty("jahiaMaxLogs");

                if(maxLogs == null)             maxLogs             = "0";
            }

            if(jahiaDisplayMessage == null)     jahiaDisplayMessage = Jahia.COPYRIGHT;

            // set request attributes...
            req.setAttribute("logEnabled",           new Boolean(logEnabled));
            req.setAttribute("maxLogs",              maxLogs);
            req.setAttribute("jahiaDisplayMessage",  jahiaDisplayMessage);

            JahiaAdministration.doRedirect( req, res, sess, JSP_PATH + "manage_logs.jsp" );

        } else {

            // back to menu in case of problems with the Managers...
            sess.setAttribute(CLASS_NAME + "jahiaDisplayMessage", "Could not get an instance of Listeners Registry");
            JahiaAdministration.displayMenu( req, res, sess );
        }

    } // end displaySettings



    /**
     * Display full audit log, using doRedirect().
     *
     * @author Mikhael Janson
     * @param   req       the HttpServletRequest object
     * @param   res       the HttpServletResponse object
     * @param   sess      the HttpSession object
     */
    private void displayView( HttpServletRequest   req,
                              HttpServletResponse  res,
                              HttpSession          sess )
    throws IOException, ServletException
    {
        String   jahiaDisplayMessage = (String)  sess.getAttribute(CLASS_NAME + "jahiaDisplayMessage");

        if (lMgr !=null) {

            // get logs
            ArrayList logData = lMgr.getLog();

            // set default values...
            if(jahiaDisplayMessage == null) jahiaDisplayMessage = Jahia.COPYRIGHT;

            // set session and request attributes...
            Boolean  keeprecentlogs =  (Boolean) sess.getAttribute("keeprecentlogs");
            if( keeprecentlogs == null ) sess.setAttribute("keeprecentlogs", new Boolean(true));

            Integer  maxlogsdays    =  (Integer) sess.getAttribute("maxlogsdays");
            if( maxlogsdays == null )    sess.setAttribute("maxlogsdays", new Integer(60));

            req.setAttribute("logData", logData);
            sess.setAttribute(CLASS_NAME + "jahiaDisplayMessage",  jahiaDisplayMessage);
            JahiaAdministration.doRedirect( req, res, sess, JSP_PATH + "logs.jsp" );

        } else {

            // back to menu in case of problems with the Managers...
            sess.setAttribute(CLASS_NAME + "jahiaDisplayMessage",  "Could not get an instance of AuditLogManager");
            JahiaAdministration.displayMenu( req, res, sess );
        }

    } // end displayView



    /**
     * Enable Audit Event logging
     *
     * @author Mikhael Janson
     * @param   req       the HttpServletRequest object