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/*
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* SONEWS News Server
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* see AUTHORS for the list of contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sonews.mlgw;
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import java.util.Properties;
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import javax.mail.AuthenticationFailedException;
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import javax.mail.Authenticator;
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import javax.mail.Flags.Flag;
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import javax.mail.Folder;
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import javax.mail.Message;
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import javax.mail.MessagingException;
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import javax.mail.NoSuchProviderException;
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import javax.mail.PasswordAuthentication;
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import javax.mail.Session;
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import javax.mail.Store;
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import org.sonews.config.Config;
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import org.sonews.daemon.AbstractDaemon;
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import org.sonews.util.Log;
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import org.sonews.util.Stats;
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/**
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* Daemon polling for new mails in a POP3 account to be delivered to newsgroups.
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* @author Christian Lins
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* @since sonews/0.5.0
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*/
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public class MailPoller extends AbstractDaemon
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{
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static class PasswordAuthenticator extends Authenticator
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{
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@Override
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public PasswordAuthentication getPasswordAuthentication()
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{
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final String username =
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Config.inst().get(Config.MLPOLL_USER, "user");
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final String password =
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Config.inst().get(Config.MLPOLL_PASSWORD, "mysecret");
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return new PasswordAuthentication(username, password);
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}
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}
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@Override
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public void run()
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{
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Log.get().info("Starting Mailinglist Poller...");
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int errors = 0;
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while (isRunning()) {
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try {
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// Wait some time between runs. At the beginning has advantages,
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// because the wait is not skipped if an exception occurs.
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Thread.sleep(60000 * (errors + 1)); // one minute * errors
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final String host =
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Config.inst().get(Config.MLPOLL_HOST, "samplehost");
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final String username =
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Config.inst().get(Config.MLPOLL_USER, "user");
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final String password =
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Config.inst().get(Config.MLPOLL_PASSWORD, "mysecret");
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Stats.getInstance().mlgwRunStart();
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// Create empty properties
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Properties props = System.getProperties();
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props.put("mail.pop3.host", host);
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props.put("mail.mime.address.strict", "false");
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// Get session
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Session session = Session.getInstance(props);
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// Get the store
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Store store = session.getStore("pop3");
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store.connect(host, 110, username, password);
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// Get folder
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Folder folder = store.getFolder("INBOX");
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folder.open(Folder.READ_WRITE);
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// Get directory
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Message[] messages = folder.getMessages();
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// Dispatch messages and delete it afterwards on the inbox
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for (Message message : messages) {
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if (Dispatcher.toGroup(message)
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|| Config.inst().get(Config.MLPOLL_DELETEUNKNOWN, false)) {
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// Delete the message
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message.setFlag(Flag.DELETED, true);
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}
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}
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// Close connection
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folder.close(true); // true to expunge deleted messages
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store.close();
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errors = 0;
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Stats.getInstance().mlgwRunEnd();
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} catch (NoSuchProviderException ex) {
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Log.get().severe(ex.toString());
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shutdown();
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} catch (AuthenticationFailedException ex) {
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// AuthentificationFailedException may be thrown if credentials are
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// bad or if the Mailbox is in use (locked).
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ex.printStackTrace();
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errors = errors < 5 ? errors + 1 : errors;
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} catch (InterruptedException ex) {
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System.out.println("sonews: " + this + " returns: " + ex);
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return;
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} catch (MessagingException ex) {
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ex.printStackTrace();
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errors = errors < 5 ? errors + 1 : errors;
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} catch (Exception ex) {
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ex.printStackTrace();
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errors = errors < 5 ? errors + 1 : errors;
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}
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}
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Log.get().severe("MailPoller exited.");
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}
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}
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