Java tutorial
/* * Copyright 2009-2012 by KNURT Systeme (http://www.knurt.de) * * Licensed under the Creative Commons License Attribution-NonCommercial-ShareAlike 3.0 Unported; * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://creativecommons.org/licenses/by-nc-sa/3.0/ * * 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 de.knurt.fam.core.util.mail; import java.util.Date; import java.util.Hashtable; import java.util.Map; import org.apache.commons.mail.Email; import org.apache.commons.mail.EmailException; import org.apache.commons.mail.SimpleEmail; import org.springframework.dao.DataIntegrityViolationException; import de.knurt.fam.connector.FamConnector; import de.knurt.fam.core.aspects.logging.FamLog; import de.knurt.fam.core.model.persist.User; import de.knurt.fam.core.model.persist.UserMail; import de.knurt.fam.core.model.persist.booking.Booking; import de.knurt.fam.core.persistence.dao.FamDaoProxy; /** * A simple text mail with a field for when to send in future * * Use the factory to get one. * * @see OutgoingUserMailBox * @author Daniel Oltmanns * @since 0.20090325 */ public class UserMailSender { private String fromMail, fromName, hostName, authPass, authName; private int smtpPort; public String getFromMail() { return fromMail; } /** one and only instance of me */ private volatile static UserMailSender me; /** construct me */ private UserMailSender() { } /** * return the one and only instance of UserMailSender * * @return the one and only instance of UserMailSender */ public static UserMailSender getInstance() { if (me == null) { // no instance so far synchronized (UserMailSender.class) { if (me == null) { // still no instance so far me = new UserMailSender(); // the one and only me.fromMail = FamConnector.getGlobalProperty("mail_from_mail"); me.fromName = FamConnector.getGlobalProperty("mail_from_name"); me.hostName = FamConnector.getGlobalProperty("mail_host_name"); try { me.smtpPort = Integer.parseInt(FamConnector.getGlobalProperty("mail_smtp_port")); } catch (NumberFormatException ex) { FamLog.exception("smtp port not set or not a number", ex, 201111091249l); // INTLANG } me.authPass = FamConnector.getGlobalProperty("mail_auth_pass"); if (me.authPass != null && me.authPass.equals("null")) { me.authPass = null; } me.authName = FamConnector.getGlobalProperty("mail_auth_name"); if (me.authName != null && me.authName.equals("null")) { me.authName = null; } } } } return me; } /** * send all mails, that have to be sent now. * * @see UserMail#getToSendDate() * @return number of sent mails */ public static int sendUserMails() { int result = 0; for (UserMail mail : FamDaoProxy.userDao().getUserMailsThatMustBeSendNow()) { if (getInstance().sendingIssueIsOver(mail)) { mail.setNeverSendDate(new Date()); FamDaoProxy.userDao().update(mail); } else { boolean wasSent = send(mail); if (wasSent) { result++; mail.setWasSentDate(new Date()); if (mail.getMsgAfterSent() != null) { mail.setMsg(mail.getMsgAfterSent()); } FamDaoProxy.userDao().update(mail); } } } return result; } private boolean sendingIssueIsOver(UserMail mail) { boolean result = false; if (mail.getType() != null) { User user = FamDaoProxy.userDao().getUserFromUsername(mail.getUsername()); boolean userIsValidAndActive = user != null && !user.isExcluded() && !user.isAccountExpired() && !user.isAnonym(); if (mail.getType() == UserMail.TYPE_NEEDS_VALID_BOOKING && mail.getFid() != null) { Booking booking = FamDaoProxy.bookingDao().getBookingWithId(mail.getFid()); result = booking == null || booking.isCanceled() || !userIsValidAndActive || !user.isAllowedToAccess(booking.getFacility()); } else if (mail.getType() == UserMail.TYPE_NEEDS_VALID_ACTIVE_USER) { result = !userIsValidAndActive; } } return result; } /** * just a meter for sending mails without userbox */ public static int SEND_WITHOUT_METER = 0; /** * send an email without need to put it into the userbox (without saved in * database). put only smtp port and host to it as configured in * {@link UserMailSender}. do not change anything else but send the email! * * @param raw * all content (subject, msg, attachments, from, to) must be set * @return true if sending succeeded. */ public static boolean sendWithoutUserBox(Email raw) { boolean result = true; UserMailSender dse = getInstance(); raw.setHostName(dse.hostName); raw.setSmtpPort(dse.smtpPort); if (FamConnector.isDev() == false) { try { raw.send(); } catch (EmailException e) { result = false; FamLog.exception("sendWithoutUserBox: " + e.getMessage(), e, 201106131753l); } } if (result) { if (SEND_WITHOUT_METER == Integer.MAX_VALUE) { SEND_WITHOUT_METER = 0; } SEND_WITHOUT_METER++; } return result; } private static boolean send(UserMail um) { boolean sendSucc = false; UserMailSender dse = getInstance(); if (um.hasBeenSent() == false) { if (um.mustBeSendNow()) { // prepare SimpleEmail email = new SimpleEmail(); email.setHostName(dse.hostName); email.setSmtpPort(dse.smtpPort); // mail server using pass if (dse.authName != null) { email.setAuthentication(dse.authName, dse.authPass); } Map<String, String> headers = new Hashtable<String, String>(); // headers.put("Subject", um.getSubject()); email.setSubject(um.getSubject()); headers.put("Content-Type", "text/plain; charset=utf-8"); headers.put("Content-Transfer-Encoding", "base64"); email.setHeaders(headers); boolean creatingSucc = false; try { email.addTo(um.getTo(), um.getUsername()); email.setFrom(dse.fromMail, dse.fromName); email.setMsg(um.getMsg()); creatingSucc = true; } catch (EmailException ex) { FamLog.logException(UserMailSender.class, ex, "creating mail failed::" + um.getTo() + "::" + um.getUsername() + "::" + um.getId(), 200904031116l); } if (creatingSucc && FamConnector.isDev() == false) { try { email.send(); sendSucc = true; } catch (EmailException ex) { FamLog.exception("sending a mail failed: " + ex.getMessage() + "-" + dse.fromMail + "-" + dse.fromName, ex, 200904031018l); } } else { // just dev mode - do not send any mails sendSucc = true; } } } else { FamLog.logException(UserMailSender.class, new DataIntegrityViolationException("try to send a mail twice"), "try to send a mail twice", 200908201836l); } return sendSucc; } }