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JAMES-2361 implement the mailet that refers to the MDN original Jmap Id
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165 changes: 165 additions & 0 deletions
165
...cols/jmap/src/main/java/org/apache/james/jmap/mailet/ExtractMDNOriginalJMAPMessageId.java
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| /**************************************************************** | |||
| * Licensed to the Apache Software Foundation (ASF) under one * | |||
| * or more contributor license agreements. See the NOTICE file * | |||
| * distributed with this work for additional information * | |||
| * regarding copyright ownership. The ASF licenses this file * | |||
| * to you under the Apache License, Version 2.0 (the * | |||
| * "License"); you may not use this file except in compliance * | |||
| * with the License. You may obtain a copy of the License at * | |||
| * * | |||
| * http://www.apache.org/licenses/LICENSE-2.0 * | |||
| * * | |||
| * 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 org.apache.james.jmap.mailet; | |||
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| import java.io.ByteArrayInputStream; | |||
| import java.io.ByteArrayOutputStream; | |||
| import java.io.IOException; | |||
| import java.util.List; | |||
| import java.util.Optional; | |||
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|
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| import javax.inject.Inject; | |||
| import javax.mail.MessagingException; | |||
| import javax.mail.internet.MimeMessage; | |||
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| import org.apache.james.core.MailAddress; | |||
| import org.apache.james.mailbox.MailboxManager; | |||
| import org.apache.james.mailbox.MailboxSession; | |||
| import org.apache.james.mailbox.exception.MailboxException; | |||
| import org.apache.james.mailbox.model.MessageId; | |||
| import org.apache.james.mailbox.model.MultimailboxesSearchQuery; | |||
| import org.apache.james.mailbox.model.SearchQuery; | |||
| import org.apache.james.mdn.MDNReport; | |||
| import org.apache.james.mdn.MDNReportParser; | |||
| import org.apache.james.mdn.fields.OriginalMessageId; | |||
| import org.apache.james.mime4j.dom.Entity; | |||
| import org.apache.james.mime4j.dom.Message; | |||
| import org.apache.james.mime4j.dom.Multipart; | |||
| import org.apache.james.mime4j.dom.SingleBody; | |||
| import org.apache.james.mime4j.message.DefaultMessageBuilder; | |||
| import org.apache.mailet.Mail; | |||
| import org.apache.mailet.base.GenericMailet; | |||
| import org.slf4j.Logger; | |||
| import org.slf4j.LoggerFactory; | |||
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|
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| import com.google.common.annotations.VisibleForTesting; | |||
| import com.google.common.collect.Iterables; | |||
|
|
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| /** | |||
| * This mailet handles MDN messages and define a header X-JAMES-MDN-JMAP-MESSAGE-ID referencing | |||
| * the original message (by its Jmap Id) asking for the recipient to send an MDN. | |||
| */ | |||
| public class ExtractMDNOriginalJMAPMessageId extends GenericMailet { | |||
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|
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| private static final Logger LOGGER = LoggerFactory.getLogger(ExtractMDNOriginalJMAPMessageId.class); | |||
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| private static final String MESSAGE_DISPOSITION_NOTIFICATION = "message/disposition-notification"; | |||
| private static final String X_JAMES_MDN_JMAP_MESSAGE_ID = "X-JAMES-MDN-JMAP-MESSAGE-ID"; | |||
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| private final MailboxManager mailboxManager; | |||
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| @Inject | |||
| public ExtractMDNOriginalJMAPMessageId(MailboxManager mailboxManager) { | |||
| this.mailboxManager = mailboxManager; | |||
| } | |||
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|
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| @Override | |||
| public void service(Mail mail) throws MessagingException { | |||
| if (mail.getRecipients().size() != 1) { | |||
| LOGGER.warn("MDN should only be sent to a single recipient"); | |||
| return; | |||
| } | |||
| MailAddress recipient = Iterables.getOnlyElement(mail.getRecipients()); | |||
| MimeMessage mimeMessage = mail.getMessage(); | |||
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| findReport(mimeMessage) | |||
| .flatMap(this::parseReport) | |||
| .flatMap(MDNReport::getOriginalMessageIdField) | |||
| .map(OriginalMessageId::getOriginalMessageId) | |||
| .flatMap(messageId -> findMessageIdForRFC822MessageId(messageId, recipient)) | |||
| .ifPresent(messageId -> setJmapMessageIdAsHeader(mimeMessage, messageId)); | |||
| } | |||
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|
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| private void setJmapMessageIdAsHeader(MimeMessage mimeMessage, MessageId messageId) { | |||
| try { | |||
| mimeMessage.addHeader(X_JAMES_MDN_JMAP_MESSAGE_ID, messageId.serialize()); | |||
| } catch (MessagingException e) { | |||
| LOGGER.error("unable to add " + X_JAMES_MDN_JMAP_MESSAGE_ID + " header to message", e); | |||
| } | |||
| } | |||
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| private Optional<MessageId> findMessageIdForRFC822MessageId(String messageId, MailAddress recipient) { | |||
| try { | |||
| MailboxSession session = mailboxManager.createSystemSession(recipient.asString()); | |||
| int limit = 1; | |||
| MultimailboxesSearchQuery searchByRFC822MessageId = MultimailboxesSearchQuery | |||
| .from(new SearchQuery(SearchQuery.mimeMessageID(messageId))) | |||
| .build(); | |||
| return mailboxManager.search(searchByRFC822MessageId, session, limit).stream().findFirst(); | |||
| } catch (MailboxException e) { | |||
| LOGGER.error("unable to find message with Message-Id: " + messageId, e); | |||
| } | |||
| return Optional.empty(); | |||
| } | |||
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| private Optional<MDNReport> parseReport(Entity report) { | |||
| try { | |||
| return new MDNReportParser().parse(((SingleBody)report.getBody()).getInputStream(), report.getCharset()); | |||
| } catch (IOException e) { | |||
| LOGGER.error("unable to parse MESSAGE_DISPOSITION_NOTIFICATION part", e); | |||
| return Optional.empty(); | |||
| } | |||
| } | |||
|
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| private Optional<Entity> findReport(MimeMessage mimeMessage) { | |||
| return parseMessage(mimeMessage).flatMap(this::extractReport); | |||
| } | |||
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| @VisibleForTesting Optional<Entity> extractReport(Message message) { | |||
| if (!message.isMultipart()) { | |||
| LOGGER.debug("MDN Message must be multipart"); | |||
| return Optional.empty(); | |||
| } | |||
| List<Entity> bodyParts = ((Multipart) message.getBody()).getBodyParts(); | |||
| if (bodyParts.size() < 2) { | |||
| LOGGER.debug("MDN Message must contain at least two parts"); | |||
| return Optional.empty(); | |||
| } | |||
| Entity report = bodyParts.get(1); | |||
| if (!isDispositionNotification(report)) { | |||
| LOGGER.debug("MDN Message second part must be of type " + MESSAGE_DISPOSITION_NOTIFICATION); | |||
| return Optional.empty(); | |||
| } | |||
| return Optional.of(report); | |||
| } | |||
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| private boolean isDispositionNotification(Entity entity) { | |||
| return entity | |||
| .getMimeType() | |||
| .startsWith(MESSAGE_DISPOSITION_NOTIFICATION); | |||
| } | |||
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| private Optional<Message> parseMessage(MimeMessage mimeMessage) { | |||
| try { | |||
| ByteArrayOutputStream os = new ByteArrayOutputStream(); | |||
| mimeMessage.writeTo(os); | |||
| Message message = new DefaultMessageBuilder().parseMessage(new ByteArrayInputStream(os.toByteArray())); | |||
| return Optional.of(message); | |||
| } catch (IOException | MessagingException e) { | |||
| LOGGER.error("unable to parse message", e); | |||
| return Optional.empty(); | |||
| } | |||
| } | |||
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| @Override | |||
| public String getMailetInfo() { | |||
| return "ExtractMDNOriginalJMAPMessageId"; | |||
| } | |||
|
|
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| } | |||
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