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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.tika.parser.microsoft;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.text.ParseException;
import java.util.Date;
import java.util.Locale;
import org.apache.poi.hmef.attribute.MAPIRtfAttribute;
import org.apache.poi.hsmf.MAPIMessage;
import org.apache.poi.hsmf.datatypes.AttachmentChunks;
import org.apache.poi.hsmf.datatypes.ByteChunk;
import org.apache.poi.hsmf.datatypes.Chunk;
import org.apache.poi.hsmf.datatypes.MAPIProperty;
import org.apache.poi.hsmf.datatypes.StringChunk;
import org.apache.poi.hsmf.datatypes.Types;
import org.apache.poi.hsmf.exceptions.ChunkNotFoundException;
import org.apache.poi.poifs.filesystem.DirectoryNode;
import org.apache.poi.poifs.filesystem.NPOIFSFileSystem;
import org.apache.tika.exception.TikaException;
import org.apache.tika.io.TikaInputStream;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.metadata.TikaCoreProperties;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.parser.html.HtmlParser;
import org.apache.tika.parser.mbox.MboxParser;
import org.apache.tika.parser.rtf.RTFParser;
import org.apache.tika.parser.txt.CharsetDetector;
import org.apache.tika.parser.txt.CharsetMatch;
import org.apache.tika.sax.BodyContentHandler;
import org.apache.tika.sax.EmbeddedContentHandler;
import org.apache.tika.sax.XHTMLContentHandler;
import org.xml.sax.SAXException;
/**
* Outlook Message Parser.
*/
public class OutlookExtractor extends AbstractPOIFSExtractor {
private final MAPIMessage msg;
public OutlookExtractor(NPOIFSFileSystem filesystem, ParseContext context) throws TikaException {
this(filesystem.getRoot(), context);
}
public OutlookExtractor(DirectoryNode root, ParseContext context) throws TikaException {
super(context);
try {
this.msg = new MAPIMessage(root);
} catch (IOException e) {
throw new TikaException("Failed to parse Outlook message", e);
}
}
public void parse(XHTMLContentHandler xhtml, Metadata metadata)
throws TikaException, SAXException, IOException {
try {
msg.setReturnNullOnMissingChunk(true);
// If the message contains strings that aren't stored
// as Unicode, try to sort out an encoding for them
if(msg.has7BitEncodingStrings()) {
if(msg.getHeaders() != null) {
// There's normally something in the headers
msg.guess7BitEncoding();
} else {
// Nothing in the header, try encoding detection
// on the message body
StringChunk text = msg.getMainChunks().textBodyChunk;
if(text != null) {
CharsetDetector detector = new CharsetDetector();
detector.setText( text.getRawValue() );
CharsetMatch match = detector.detect();
if(match.getConfidence() > 35) {
msg.set7BitEncoding( match.getName() );
}
}
}
}
// Start with the metadata
String subject = msg.getSubject();
String from = msg.getDisplayFrom();
metadata.set(TikaCoreProperties.CREATOR, from);
metadata.set(Metadata.MESSAGE_FROM, from);
metadata.set(Metadata.MESSAGE_TO, msg.getDisplayTo());
metadata.set(Metadata.MESSAGE_CC, msg.getDisplayCC());
metadata.set(Metadata.MESSAGE_BCC, msg.getDisplayBCC());
metadata.set(TikaCoreProperties.TITLE, subject);
// TODO: Move to description in Tika 2.0
metadata.set(TikaCoreProperties.TRANSITION_SUBJECT_TO_DC_DESCRIPTION,
msg.getConversationTopic());
try {
for(String recipientAddress : msg.getRecipientEmailAddressList()) {
if(recipientAddress != null)
metadata.add(Metadata.MESSAGE_RECIPIENT_ADDRESS, recipientAddress);
}
} catch(ChunkNotFoundException he) {} // Will be fixed in POI 3.7 Final
// Date - try two ways to find it
// First try via the proper chunk
if(msg.getMessageDate() != null) {
metadata.set(TikaCoreProperties.CREATED, msg.getMessageDate().getTime());
metadata.set(TikaCoreProperties.MODIFIED, msg.getMessageDate().getTime());
} else {
try {
// Failing that try via the raw headers
String[] headers = msg.getHeaders();
if(headers != null && headers.length > 0) {
for(String header: headers) {
if(header.toLowerCase(Locale.ROOT).startsWith("date:")) {
String date = header.substring(header.indexOf(':')+1).trim();
// See if we can parse it as a normal mail date
try {
Date d = MboxParser.parseDate(date);
metadata.set(TikaCoreProperties.CREATED, d);
metadata.set(TikaCoreProperties.MODIFIED, d);
} catch(ParseException e) {
// Store it as-is, and hope for the best...
metadata.set(TikaCoreProperties.CREATED, date);
metadata.set(TikaCoreProperties.MODIFIED, date);
}
break;
}
}
}
} catch(ChunkNotFoundException he) {
// We can't find the date, sorry...
}
}
xhtml.element("h1", subject);
// Output the from and to details in text, as you
// often want them in text form for searching
xhtml.startElement("dl");
if (from!=null) {
header(xhtml, "From", from);
}
header(xhtml, "To", msg.getDisplayTo());
header(xhtml, "Cc", msg.getDisplayCC());
header(xhtml, "Bcc", msg.getDisplayBCC());
try {
header(xhtml, "Recipients", msg.getRecipientEmailAddress());
} catch(ChunkNotFoundException e) {}
xhtml.endElement("dl");
// Get the message body. Preference order is: html, rtf, text
Chunk htmlChunk = null;
Chunk rtfChunk = null;
Chunk textChunk = null;
for(Chunk chunk : msg.getMainChunks().getChunks()) {
if(chunk.getChunkId() == MAPIProperty.BODY_HTML.id) {
htmlChunk = chunk;
}
if(chunk.getChunkId() == MAPIProperty.RTF_COMPRESSED.id) {
rtfChunk = chunk;
}
if(chunk.getChunkId() == MAPIProperty.BODY.id) {
textChunk = chunk;
}
}
boolean doneBody = false;
xhtml.startElement("div", "class", "message-body");
if(htmlChunk != null) {
byte[] data = null;
if(htmlChunk instanceof ByteChunk) {
data = ((ByteChunk)htmlChunk).getValue();
} else if(htmlChunk instanceof StringChunk) {
data = ((StringChunk)htmlChunk).getRawValue();
}
if(data != null) {
HtmlParser htmlParser = new HtmlParser();
htmlParser.parse(
new ByteArrayInputStream(data),
new EmbeddedContentHandler(new BodyContentHandler(xhtml)),
new Metadata(), new ParseContext()
);
doneBody = true;
}
}
if(rtfChunk != null && !doneBody) {
ByteChunk chunk = (ByteChunk)rtfChunk;
MAPIRtfAttribute rtf = new MAPIRtfAttribute(
MAPIProperty.RTF_COMPRESSED, Types.BINARY.getId(), chunk.getValue()
);
RTFParser rtfParser = new RTFParser();
rtfParser.parse(
new ByteArrayInputStream(rtf.getData()),
new EmbeddedContentHandler(new BodyContentHandler(xhtml)),
new Metadata(), new ParseContext());
doneBody = true;
}
if(textChunk != null && !doneBody) {
xhtml.element("p", ((StringChunk)textChunk).getValue());
}
xhtml.endElement("div");
// Process the attachments
for (AttachmentChunks attachment : msg.getAttachmentFiles()) {
xhtml.startElement("div", "class", "attachment-entry");
String filename = null;
if (attachment.attachLongFileName != null) {
filename = attachment.attachLongFileName.getValue();
} else if (attachment.attachFileName != null) {
filename = attachment.attachFileName.getValue();
}
if (filename != null && filename.length() > 0) {
xhtml.element("h1", filename);
}
if(attachment.attachData != null) {
handleEmbeddedResource(
TikaInputStream.get(attachment.attachData.getValue()),
filename, null,
null, xhtml, true
);
}
if(attachment.attachmentDirectory != null) {
handleEmbeddedOfficeDoc(
attachment.attachmentDirectory.getDirectory(),
xhtml
);
}
xhtml.endElement("div");
}
} catch(ChunkNotFoundException e) {
throw new TikaException("POI MAPIMessage broken - didn't return null on missing chunk", e);
}
}
private void header(XHTMLContentHandler xhtml, String key, String value)
throws SAXException {
if (value != null && value.length() > 0) {
xhtml.element("dt", key);
xhtml.element("dd", value);
}
}
}
