/*
* Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.mail.remote;
import java.io.*;
import javax.mail.*;
import com.sun.mail.mbox.*;
/**
* A wrapper around a local MboxStore
that fetches data
* from the Inbox in a remote store and adds it to our local Inbox.
*/
public abstract class RemoteStore extends MboxStore {
protected Store remoteStore;
protected Folder remoteInbox;
protected Folder inbox;
protected String host, user, password;
protected int port;
protected long lastUpdate = 0;
public RemoteStore(Session session, URLName url) {
super(session, url);
remoteStore = getRemoteStore(session, url);
}
/**
* Subclasses override this method to return the appropriate
* Store
object. This method will be called by
* the RemoteStore
constructor.
*/
protected abstract Store getRemoteStore(Session session, URLName url);
/**
* Connect to the store.
*/
public void connect(String host, int port, String user, String password)
throws MessagingException {
this.host = host;
this.port = port;
this.user = user;
this.password = password;
updateInbox();
}
/**
* Fetch any new mail in the remote INBOX and add it to the local INBOX.
*/
protected void updateInbox() throws MessagingException {
// is it time to do an update yet?
// XXX - polling frequency, rules, etc. should be in properties
if (System.currentTimeMillis() < lastUpdate + (5 * 1000))
return;
try {
/*
* Connect to the remote store, using the saved
* authentication information.
*/
remoteStore.connect(host, port, user, password);
/*
* If this store isn't connected yet, do it now, because
* it needs to be connected to get the INBOX folder.
*/
if (!isConnected())
super.connect(host, port, user, password);
if (remoteInbox == null)
remoteInbox = remoteStore.getFolder("INBOX");
if (inbox == null)
inbox = getFolder("INBOX");
remoteInbox.open(Folder.READ_WRITE);
Message[] msgs = remoteInbox.getMessages();
inbox.appendMessages(msgs);
remoteInbox.setFlags(msgs, new Flags(Flags.Flag.DELETED), true);
remoteInbox.close(true);
remoteStore.close();
} catch (MessagingException ex) {
try {
if (remoteInbox != null && remoteInbox.isOpen())
remoteInbox.close(false);
} finally {
if (remoteStore != null && remoteStore.isConnected())
remoteStore.close();
}
throw ex;
}
}
public Folder getDefaultFolder() throws MessagingException {
checkConnected();
return new RemoteDefaultFolder(this, null);
}
public Folder getFolder(String name) throws MessagingException {
checkConnected();
if (name.equalsIgnoreCase("INBOX"))
return new RemoteInbox(this, name);
else
return super.getFolder(name);
}
public Folder getFolder(URLName url) throws MessagingException {
checkConnected();
return getFolder(url.getFile());
}
private void checkConnected() throws MessagingException {
if (!isConnected())
throw new MessagingException("Not connected");
}
}