src/org/sonews/mlgw/MailPoller.java
author František Kučera <franta-hg@frantovo.cz>
Fri Oct 14 00:45:06 2011 +0200 (2011-10-14)
changeset 76 b5690fc25af6
parent 35 ed84c8bdd87b
permissions -rwxr-xr-x
Drupal: XSL šablona pro formátování XHTML části zprávy.
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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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}