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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 *
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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 EXPN command
33 */
34 public class ExpnCmdHandler implements CommandHandler {
35
36 /**
37 * The name of the command handled by the command handler
38 */
39 private final static String COMMAND_NAME = "EXPN";
40
41 /**
42 * Handler method called upon receipt of a EXPN command.
43 * This method informs the client that the command is
44 * not implemented.
45 *
46 * @see org.apache.james.smtpserver.CommandHandler#onCommand(SMTPSession)
47 */
48 public void onCommand(SMTPSession session) {
49 String responseString = "502 "+DSNStatus.getStatus(DSNStatus.PERMANENT,DSNStatus.SYSTEM_NOT_CAPABLE)+" EXPN is not supported";
50 session.writeResponse(responseString);
51 }
52
53 /**
54 * @see org.apache.james.smtpserver.CommandHandler#getImplCommands()
55 */
56 public Collection getImplCommands() {
57 Collection implCommands = new ArrayList();
58 implCommands.add("EXPN");
59
60 return implCommands;
61 }
62
63 }