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* Copyright (c) 2000-2004 The Apache Software Foundation. *
* All rights reserved. *
* ------------------------------------------------------------------- *
* Licensed under the Apache License, Version 2.0 (the "License"); you *
* may not use this file except in compliance with the License. You *
* may obtain a copy of the License at: *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or *
* implied. See the License for the specific language governing *
* permissions and limitations under the License. *
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package org.apache.james.transport.matchers;
import org.apache.mailet.GenericMatcher;
import org.apache.mailet.Mail;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Part;
import javax.mail.internet.MimeMessage;
import java.util.Collection;
/**
* Checks whether this message has an attachment
*
* @version CVS $Revision: 1.2.4.4 $ $Date: 2004/03/15 03:54:21 $
*/
public class HasAttachment extends GenericMatcher {
/**
* Either every recipient is matching or neither of them.
* @throws MessagingException if no attachment is found and at least one exception was thrown
*/
public Collection match(Mail mail) throws MessagingException {
Exception anException = null;
try {
MimeMessage message = mail.getMessage();
Object content;
/**
* if there is an attachment and no inline text,
* the content type can be anything
*/
if (message.getContentType() == null) {
return null;
}
content = message.getContent();
if (content instanceof Multipart) {
Multipart multipart = (Multipart) content;
for (int i = 0; i < multipart.getCount(); i++) {
try {
Part part = multipart.getBodyPart(i);
String fileName = part.getFileName();
if (fileName != null) {
return mail.getRecipients(); // file found
}
} catch (MessagingException e) {
anException = e;
} // ignore any messaging exception and process next bodypart
}
} else {
String fileName = message.getFileName();
if (fileName != null) {
return mail.getRecipients(); // file found
}
}
} catch (Exception e) {
anException = e;
}
// if no attachment was found and at least one exception was catched rethrow it up
if (anException != null) {
throw new MessagingException("Malformed message", anException);
}
return null; // no attachment found
}
}