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2 * Licensed to the Apache Software Foundation (ASF) under one *
3 * or more contributor license agreements. See the NOTICE file *
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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 *
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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 }