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19
20
21
22 package org.apache.james.transport.matchers;
23
24 import org.apache.mailet.base.RFC2822Headers;
25 import org.apache.mailet.base.GenericMatcher;
26 import org.apache.mailet.Mail;
27
28 import javax.mail.Header;
29 import javax.mail.MessagingException;
30 import javax.mail.internet.MimeMessage;
31 import java.util.Collection;
32 import java.util.Enumeration;
33
34 /**
35 * Matches mail which has been relayed more than a given number of times.
36 * @version 1.0.0, 1/5/2000
37 */
38
39 public class RelayLimit extends GenericMatcher {
40 int limit = 30;
41
42 public void init() throws MessagingException {
43 try {
44 limit = Integer.parseInt(getCondition());
45 } catch (NumberFormatException e) {
46 throw new MessagingException("No valid integer: " + getCondition());
47 }
48 }
49
50 public Collection match(Mail mail) throws javax.mail.MessagingException {
51 MimeMessage mm = mail.getMessage();
52 int count = 0;
53 for (Enumeration e = mm.getAllHeaders(); e.hasMoreElements();) {
54 Header hdr = (Header)e.nextElement();
55 if (hdr.getName().equals(RFC2822Headers.RECEIVED)) {
56 count++;
57 }
58 }
59 if (count >= limit) {
60 return mail.getRecipients();
61 } else {
62 return null;
63 }
64 }
65 }