001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements. See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache license, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License. You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the license for the specific language governing permissions and
015     * limitations under the license.
016     */
017    package org.apache.logging.log4j.core.net;
018    
019    import javax.mail.Message;
020    import javax.mail.MessagingException;
021    import javax.mail.Session;
022    import javax.mail.internet.AddressException;
023    import javax.mail.internet.InternetAddress;
024    import javax.mail.internet.MimeMessage;
025    
026    /**
027     *  Helper class for SMTPManager.
028     */
029    public class MimeMessageBuilder {
030        private final MimeMessage message;
031    
032        public MimeMessageBuilder(final Session session) {
033            message = new MimeMessage(session);
034        }
035    
036        public MimeMessageBuilder setFrom(final String from) throws MessagingException {
037            final InternetAddress address = parseAddress(from);
038    
039            if (null != address) {
040                message.setFrom(address);
041            } else {
042                try {
043                    message.setFrom();
044                } catch (final Exception ex) {
045                    message.setFrom(null);
046                }
047            }
048            return this;
049        }
050    
051        public MimeMessageBuilder setReplyTo(final String replyTo) throws MessagingException {
052            final InternetAddress[] addresses = parseAddresses(replyTo);
053    
054            if (null != addresses) {
055                message.setReplyTo(addresses);
056            }
057            return this;
058        }
059    
060        public MimeMessageBuilder setRecipients(final Message.RecipientType recipientType, final String recipients)
061            throws MessagingException {
062            final InternetAddress[] addresses = parseAddresses(recipients);
063    
064            if (null != addresses) {
065                message.setRecipients(recipientType, addresses);
066            }
067            return this;
068        }
069    
070        public MimeMessageBuilder setSubject(final String subject) throws MessagingException {
071            if (subject != null) {
072                message.setSubject(subject, "UTF-8");
073            }
074            return this;
075        }
076    
077        public MimeMessage getMimeMessage() {
078            return message;
079        }
080    
081        private static InternetAddress parseAddress(final String address) throws AddressException {
082            return address == null ? null : new InternetAddress(address);
083        }
084    
085        private static InternetAddress[] parseAddresses(final String addresses) throws AddressException {
086            return addresses == null ? null : InternetAddress.parse(addresses, true);
087        }
088    }