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19
20
21
22 package org.apache.james.transport.matchers;
23
24 import org.apache.mailet.base.GenericMatcher;
25 import org.apache.mailet.Mail;
26
27 import javax.mail.MessagingException;
28 import javax.mail.Multipart;
29 import javax.mail.Part;
30 import javax.mail.internet.MimeMessage;
31 import java.util.Collection;
32
33 /**
34 * Checks whether this message has an attachment
35 *
36 * @version CVS $Revision: 713949 $ $Date: 2008-11-14 07:40:21 +0000 (Fri, 14 Nov 2008) $
37 */
38 public class HasAttachment extends GenericMatcher {
39
40 /**
41 * Either every recipient is matching or neither of them.
42 * @throws MessagingException if no attachment is found and at least one exception was thrown
43 */
44 public Collection match(Mail mail) throws MessagingException {
45
46 Exception anException = null;
47
48 try {
49 MimeMessage message = mail.getMessage();
50 Object content;
51
52 /**
53 * if there is an attachment and no inline text,
54 * the content type can be anything
55 */
56 if (message.getContentType() == null) {
57 return null;
58 }
59
60 content = message.getContent();
61 if (content instanceof Multipart) {
62 Multipart multipart = (Multipart) content;
63 for (int i = 0; i < multipart.getCount(); i++) {
64 try {
65 Part part = multipart.getBodyPart(i);
66 String fileName = part.getFileName();
67 if (fileName != null) {
68 return mail.getRecipients(); // file found
69 }
70 } catch (MessagingException e) {
71 anException = e;
72 } // ignore any messaging exception and process next bodypart
73 }
74 } else {
75 String fileName = message.getFileName();
76 if (fileName != null) {
77 return mail.getRecipients(); // file found
78 }
79 }
80 } catch (Exception e) {
81 anException = e;
82 }
83
84 // if no attachment was found and at least one exception was catched rethrow it up
85 if (anException != null) {
86 throw new MessagingException("Malformed message", anException);
87 }
88
89 return null; // no attachment found
90 }
91 }