1 /**************************************************************** 2 * Licensed to the Apache Software Foundation (ASF) under one * 3 * or more contributor license agreements. See the NOTICE file * 4 * distributed with this work for additional information * 5 * regarding copyright ownership. The ASF licenses this file * 6 * to you under the Apache License, Version 2.0 (the * 7 * "License"); you may not use this file except in compliance * 8 * with the License. You may obtain a copy of the License at * 9 * * 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 ****************************************************************/ 19 20 21 22 package org.apache.james.transport.mailets; 23 24 import java.util.ArrayList; 25 import java.util.StringTokenizer; 26 27 import javax.mail.MessagingException; 28 import javax.mail.internet.MimeMessage; 29 30 import org.apache.mailet.base.GenericMailet; 31 import org.apache.mailet.Mail; 32 import org.apache.mailet.MailetException; 33 34 /** 35 * Remove mime headers 36 * 37 * Sample configuration: 38 * 39 * <pre><code> 40 * <mailet match="All" class="RemoveMimeHeader"> 41 * <name>header1</name> 42 * <name>header2</name> 43 * </mailet> 44 * </code></pre> 45 * 46 */ 47 public class RemoveMimeHeader extends GenericMailet { 48 49 /** 50 * Arraylist which holds the headers which should be removed 51 */ 52 ArrayList headers = new ArrayList(); 53 54 /** 55 * @see org.apache.mailet.GenericMailet#init() 56 */ 57 public void init() throws MailetException { 58 String header = getInitParameter("name"); 59 if (header != null) { 60 StringTokenizer st = new StringTokenizer(header, ","); 61 while (st.hasMoreTokens()) { 62 headers.add(st.nextToken()); 63 } 64 } else { 65 throw new MailetException( 66 "Invalid config. Please specify atleast one name"); 67 } 68 } 69 70 /** 71 * @see org.apache.mailet.GenericMailet#service(Mail) 72 */ 73 public void service(Mail mail) { 74 try { 75 MimeMessage message = mail.getMessage(); 76 77 // loop through the headers 78 for (int i = 0; i < headers.size(); i++) { 79 message.removeHeader((String) headers.get(i)); 80 } 81 82 message.saveChanges(); 83 84 } catch (MessagingException e) { 85 // just log the exception 86 log("Unable to remove headers: " + e.getMessage()); 87 } 88 } 89 90 /** 91 * @see org.apache.mailet.GenericMailet#getMailetInfo() 92 */ 93 public String getMailetInfo() { 94 return "RemoveMimeHeader Mailet"; 95 } 96 }