vrfycommand.java

Java Mail Server JAVA编写的邮件服务器

/****************************************************************
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.     *
 *                                                              *
 * Copyright 2008 Jun Li(SiChuan University, the School of      *
 * Software Enginerring). All rights reserved.                  *
 *                                                              *
 * Licensed to the JMS under one  or more contributor license   *
 * agreements.  See the LICENCE file  distributed with this     *
 * work for additional information regarding copyright          *
 * ownership.  The JMS licenses this file  you may not use this *
 * file except in compliance  with the License.                 *
 *                                                              *
 * Unless required by applicable law or agreed to in writing,   *
 * software distributed under the License is distributed on an  *
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
 * KIND, either express or implied.  See the License for the    *
 * specific language governing permissions and limitations      *
 * under the License.                                           *
 ****************************************************************/
package org.jpxx.mail.plugin.console.command;

import org.jpxx.mail.Exception.ArgumentException;
import org.jpxx.mail.Service.CommandHandler;
import org.jpxx.mail.Service.Session;
import org.jpxx.mail.plugin.console.ConsoleStates;
import org.jpxx.mail.plugin.console.admin.Administrator;

/**
 *
 * This command checks admin.
 * 
 * Syntax:
 * VRFY [User] [digest]
 *  
 * @author Jun Li
 * @version $Revision: 0.0.3 $, $Date: 2008/10/25 $
 * @since JMS 0.0.3
 */
public class VrfyCommand implements CommandHandler, ConsoleStates {

    /**
     * Check console user——Admin.
     * 
     * @see org.jpxx.mail.Service.CommandHandler#onCommand(Session session)
     * @param session The Session of Server and client
     */
    public void onCommand(Session session) {
        int state = session.getLastAction();
        if (state == READY) {
            try {
                String user = session.getCommandLine().getArgument(0);
                String pass = session.getCommandLine().getArgument(1);

                Administrator admin = new Administrator();

                StringBuffer buffer = new StringBuffer(64);
                
                if (admin.checkAdmin(user, pass)) {                    
                    buffer.append(OK);
                    buffer.append(" ");
                    buffer.append("Login Successfully");
                    session.writeResponse(buffer.toString());
                    session.setLastAction(AUTHENTICATION);
                } else {
                    buffer.append(ERR);
                    buffer.append(" ");
                    buffer.append("Authentication failed");
                    session.writeResponse(buffer.toString());
                }
            } catch (ArgumentException ae) {
                StringBuffer buffer = new StringBuffer(64);
                buffer.append(ERR);
                buffer.append(" ");
                buffer.append("Usage: VRFY [name] [password]");
                session.writeResponse(buffer.toString());
                return;
            }
        } else {
            StringBuffer buffer = new StringBuffer(64);
            buffer.append(ERR);
            buffer.append(" ");
            buffer.append("VRFY not allowed here");
            session.writeResponse(buffer.toString());
        }
    }
}