1 /**************************************************************** 2 * Licensed to the Apache Software Foundation (ASF) under one * 3 * or more contributor license agreements. See the NOTICE file * 4 * distributed with this work for additional information * 5 * regarding copyright ownership. The ASF licenses this file * 6 * to you under the Apache License, Version 2.0 (the * 7 * "License"); you may not use this file except in compliance * 8 * with the License. You may obtain a copy of the License at * 9 * * 10 * http://www.apache.org/licenses/LICENSE-2.0 * 11 * * 12 * Unless required by applicable law or agreed to in writing, * 13 * software distributed under the License is distributed on an * 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * 15 * KIND, either express or implied. See the License for the * 16 * specific language governing permissions and limitations * 17 * under the License. * 18 ****************************************************************/ 19 20 21 22 package org.apache.james.smtpserver.core; 23 24 import java.util.ArrayList; 25 import java.util.Collection; 26 27 import org.apache.james.dsn.DSNStatus; 28 import org.apache.james.smtpserver.CommandHandler; 29 import org.apache.james.smtpserver.SMTPSession; 30 31 /** 32 * Handles RSET command 33 */ 34 public class RsetCmdHandler implements CommandHandler { 35 /** 36 * The name of the command handled by the command handler 37 */ 38 private final static String COMMAND_NAME = "RSET"; 39 40 /* 41 * handles RSET command 42 * 43 * @see org.apache.james.smtpserver.CommandHandler#onCommand(SMTPSession) 44 **/ 45 public void onCommand(SMTPSession session) { 46 doRSET(session, session.getCommandArgument()); 47 } 48 49 50 /** 51 * Handler method called upon receipt of a RSET command. 52 * Resets message-specific, but not authenticated user, state. 53 * 54 * @param session SMTP session object 55 * @param argument the argument passed in with the command by the SMTP client 56 */ 57 private void doRSET(SMTPSession session, String argument) { 58 String responseString = ""; 59 if ((argument == null) || (argument.length() == 0)) { 60 61 session.resetState(); 62 63 responseString = "250 "+DSNStatus.getStatus(DSNStatus.SUCCESS,DSNStatus.UNDEFINED_STATUS)+" OK"; 64 } else { 65 responseString = "500 "+DSNStatus.getStatus(DSNStatus.PERMANENT,DSNStatus.DELIVERY_INVALID_ARG)+" Unexpected argument provided with RSET command"; 66 } 67 session.writeResponse(responseString); 68 } 69 70 /** 71 * @see org.apache.james.smtpserver.CommandHandler#getImplCommands() 72 */ 73 public Collection getImplCommands() { 74 Collection implCommands = new ArrayList(); 75 implCommands.add("RSET"); 76 77 return implCommands; 78 } 79 80 }