01: /****************************************************************
02: * Licensed to the Apache Software Foundation (ASF) under one *
03: * or more contributor license agreements. See the NOTICE file *
04: * distributed with this work for additional information *
05: * regarding copyright ownership. The ASF licenses this file *
06: * to you under the Apache License, Version 2.0 (the *
07: * "License"); you may not use this file except in compliance *
08: * with the License. You may obtain a copy of the License at *
09: * *
10: * http://www.apache.org/licenses/LICENSE-2.0 *
11: * *
12: * Unless required by applicable law or agreed to in writing, *
13: * software distributed under the License is distributed on an *
14: * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
15: * KIND, either express or implied. See the License for the *
16: * specific language governing permissions and limitations *
17: * under the License. *
18: ****************************************************************/package org.apache.james.transport.matchers;
19:
20: import org.apache.mailet.GenericMatcher;
21: import org.apache.mailet.Mail;
22:
23: import javax.mail.Header;
24: import javax.mail.MessagingException;
25: import javax.mail.internet.MimeMessage;
26: import java.util.Collection;
27: import java.util.Enumeration;
28: import java.util.Locale;
29:
30: /**
31: * Checks whether the message (entire message, not just content) is greater
32: * than a certain number of bytes. You can use 'k' and 'm' as optional postfixes.
33: * In other words, "1m" is the same as writing "1024k", which is the same as
34: * "1048576".
35: *
36: */
37: public class SizeGreaterThan extends GenericMatcher {
38:
39: int cutoff = 0;
40:
41: public void init() {
42: String amount = getCondition().trim().toLowerCase(Locale.US);
43: if (amount.endsWith("k")) {
44: amount = amount.substring(0, amount.length() - 1);
45: cutoff = Integer.parseInt(amount) * 1024;
46: } else if (amount.endsWith("m")) {
47: amount = amount.substring(0, amount.length() - 1);
48: cutoff = Integer.parseInt(amount) * 1024 * 1024;
49: } else {
50: cutoff = Integer.parseInt(amount);
51: }
52: }
53:
54: public Collection match(Mail mail) throws MessagingException {
55: MimeMessage message = mail.getMessage();
56: //Calculate the size
57: int size = message.getSize();
58: Enumeration e = message.getAllHeaders();
59: while (e.hasMoreElements()) {
60: size += ((Header) e.nextElement()).toString().length();
61: }
62: if (size > cutoff) {
63: return mail.getRecipients();
64: } else {
65: return null;
66: }
67: }
68: }
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