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