org.apache.james.mailet.standard.mailets.RemoveMimeHeader Maven / Gradle / Ivy

Go to download
/****************************************************************
 * Licensed to the Apache Software Foundation (ASF) under one   *
 * or more contributor license agreements.  See the NOTICE file *
 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF licenses this file   *
 * to you 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.                                           *
 ****************************************************************/



package org.apache.james.mailet.standard.mailets;

import java.util.ArrayList;
import java.util.StringTokenizer;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;

import org.apache.mailet.base.GenericMailet;
import org.apache.mailet.Mail;
import org.apache.mailet.MailetException;

/**
 * Remove mime headers
 * 
 * Sample configuration:
 * 
 * 
 * <mailet match="All" class="RemoveMimeHeader">
 * <name>header1</name>
 * <name>header2</name>
 * </mailet>
 * 
 * 
 */
public class RemoveMimeHeader extends GenericMailet {
    
    /**
     * Arraylist which holds the headers which should be removed
     */
    ArrayList headers = new ArrayList();

    /*
     * (non-Javadoc)
     * @see org.apache.mailet.base.GenericMailet#init()
     */
    public void init() throws MailetException {
        String header = getInitParameter("name");
        if (header != null) {
            StringTokenizer st = new StringTokenizer(header, ",");
            while (st.hasMoreTokens()) {
                headers.add(st.nextToken());
            }
        } else {
            throw new MailetException(
                    "Invalid config. Please specify atleast one name");
        }
    }
    

    /*
     * (non-Javadoc)
     * @see org.apache.mailet.base.GenericMailet#service(org.apache.mailet.Mail)
     */
    public void service(Mail mail) {
        try {
            MimeMessage  message = mail.getMessage();
        
            // loop through the headers
            for (String header : headers) {
                message.removeHeader(header);
            }
            
            message.saveChanges();

        } catch (MessagingException e) {
            // just log the exception
            log("Unable to remove headers: " + e.getMessage());
        }
    }
    
    /*
     * (non-Javadoc)
     * @see org.apache.mailet.base.GenericMailet#getMailetInfo()
     */
    public String getMailetInfo() {
        return "RemoveMimeHeader Mailet";
    }
}