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19
20
21
22 package org.apache.james.smtpserver.core.filter;
23
24 import java.util.ArrayList;
25 import java.util.Collection;
26
27 import org.apache.avalon.framework.logger.AbstractLogEnabled;
28 import org.apache.james.dsn.DSNStatus;
29 import org.apache.james.smtpserver.CommandHandler;
30 import org.apache.james.smtpserver.SMTPSession;
31
32
33 /**
34 * handles DATA command
35 */
36 public class DataFilterCmdHandler
37 extends AbstractLogEnabled
38 implements CommandHandler {
39
40 /**
41 * process DATA command
42 *
43 * @see org.apache.james.smtpserver.CommandHandler#onCommand(SMTPSession)
44 */
45 public void onCommand(SMTPSession session) {
46 doDATA(session, session.getCommandArgument());
47 }
48
49
50 /**
51 * @param session SMTP session object
52 * @param argument the argument passed in with the command by the SMTP client
53 */
54 private void doDATA(SMTPSession session, String argument) {
55 String responseString = null;
56 if ((argument != null) && (argument.length() > 0)) {
57 responseString = "500 "+DSNStatus.getStatus(DSNStatus.PERMANENT,DSNStatus.DELIVERY_INVALID_ARG)+" Unexpected argument provided with DATA command";
58 session.writeResponse(responseString);
59
60 //TODO: Check if this should been!
61 }
62 if (!session.getState().containsKey(SMTPSession.SENDER)) {
63 responseString = "503 "+DSNStatus.getStatus(DSNStatus.PERMANENT,DSNStatus.DELIVERY_OTHER)+" No sender specified";
64 session.writeResponse(responseString);
65
66 // After this filter match we should not call any other handler!
67 session.setStopHandlerProcessing(true);
68
69 } else if (!session.getState().containsKey(SMTPSession.RCPT_LIST)) {
70 responseString = "503 "+DSNStatus.getStatus(DSNStatus.PERMANENT,DSNStatus.DELIVERY_OTHER)+" No recipients specified";
71 session.writeResponse(responseString);
72
73 // After this filter match we should not call any other handler!
74 session.setStopHandlerProcessing(true);
75 }
76 }
77
78 /**
79 * @see org.apache.james.smtpserver.CommandHandler#getImplCommands()
80 */
81 public Collection getImplCommands() {
82 Collection implCommands = new ArrayList();
83 implCommands.add("DATA");
84
85 return implCommands;
86 }
87 }