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6 * to you under the Apache License, Version 2.0 (the *
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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.filter;
23
24
25 import java.util.ArrayList;
26 import java.util.Collection;
27
28 import org.apache.avalon.framework.logger.AbstractLogEnabled;
29 import org.apache.james.smtpserver.CommandHandler;
30 import org.apache.james.smtpserver.SMTPSession;
31
32
33 /**
34 * Handles HELO command
35 */
36 public class HeloFilterCmdHandler extends AbstractLogEnabled implements CommandHandler {
37
38 /**
39 * The name of the command handled by the command handler
40 */
41 private final static String COMMAND_NAME = "HELO";
42
43 /**
44 * process HELO command
45 *
46 * @see org.apache.james.smtpserver.CommandHandler#onCommand(SMTPSession)
47 **/
48 public void onCommand(SMTPSession session) {
49 doHELO(session, session.getCommandArgument());
50 }
51
52 /**
53 * @param session SMTP session object
54 * @param argument the argument passed in with the command by the SMTP client
55 */
56 private void doHELO(SMTPSession session, String argument) {
57 String responseString = null;
58
59 session.resetState();
60
61 if (argument == null) {
62 responseString = "501 Domain address required: " + COMMAND_NAME;
63 session.writeResponse(responseString);
64 getLogger().info(responseString);
65
66 // After this filter match we should not call any other handler!
67 session.setStopHandlerProcessing(true);
68
69 } else {
70 // store provided name
71 session.getState().put(SMTPSession.CURRENT_HELO_NAME,argument);
72 }
73 }
74
75 /**
76 * @see org.apache.james.smtpserver.CommandHandler#getImplCommands()
77 */
78 public Collection getImplCommands() {
79 Collection implCommands = new ArrayList();
80 implCommands.add("HELO");
81
82 return implCommands;
83 }
84
85 }