/***********************************************************************
* 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. *
***********************************************************************/
package org.apache.james.transport.mailets;
import org.apache.mailet.GenericMailet;
import org.apache.mailet.Mail;
import org.apache.mailet.MailAddress;
import org.apache.mailet.MailetContext;
import javax.mail.MessagingException;
import java.util.Collection;
import java.util.Iterator;
import java.util.Vector;
//import com.workingdogs.town.*;
/**
* Rewrites recipient addresses to make sure email for the postmaster is
* always handled. This mailet is silently inserted at the top of the root
* spool processor. All recipients mapped to postmaster@<servernames> are
* changed to the postmaster account as specified in the server conf.
*
*/
public class PostmasterAlias extends GenericMailet {
/**
* Make sure that a message that is addressed to a postmaster alias is always
* sent to the postmaster address, regardless of delivery to other recipients.
*
* @param mail the mail to process
*
* @throws MessagingException if an error is encountered while modifying the message
*/
public void service(Mail mail) throws MessagingException {
Collection recipients = mail.getRecipients();
Collection recipientsToRemove = null;
MailetContext mailetContext = getMailetContext();
boolean postmasterAddressed = false;
for (Iterator i = recipients.iterator(); i.hasNext(); ) {
MailAddress addr = (MailAddress)i.next();
if (addr.getUser().equalsIgnoreCase("postmaster") &&
mailetContext.isLocalServer(addr.getHost())) {
//Should remove this address... we want to replace it with
// the server's postmaster address
if (recipientsToRemove == null) {
recipientsToRemove = new Vector();
}
recipientsToRemove.add(addr);
//Flag this as having found the postmaster
postmasterAddressed = true;
}
}
if (postmasterAddressed) {
recipients.removeAll(recipientsToRemove);
recipients.add(getMailetContext().getPostmaster());
}
}
/**
* Return a string describing this mailet.
*
* @return a string describing this mailet
*/
public String getMailetInfo() {
return "Postmaster aliasing mailet";
}
}