org.apache.tika.parser.microsoft.JackcessParser Maven / Gradle / Ivy
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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.IOException;
import java.io.InputStream;
import java.util.Collections;
import java.util.Locale;
import java.util.Set;
import com.healthmarketscience.jackcess.CryptCodecProvider;
import com.healthmarketscience.jackcess.Database;
import com.healthmarketscience.jackcess.DatabaseBuilder;
import com.healthmarketscience.jackcess.util.LinkResolver;
import org.apache.tika.exception.EncryptedDocumentException;
import org.apache.tika.exception.TikaException;
import org.apache.tika.io.TikaInputStream;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.metadata.Property;
import org.apache.tika.mime.MediaType;
import org.apache.tika.parser.AbstractParser;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.parser.PasswordProvider;
import org.apache.tika.sax.XHTMLContentHandler;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
/**
* Parser that handles Microsoft Access files via
* SUPPORTED_TYPES = Collections.singleton(MEDIA_TYPE);
private Locale locale = Locale.ROOT;
@Override
public Set getSupportedTypes(ParseContext context) {
return SUPPORTED_TYPES;
}
@Override
public void parse(InputStream stream, ContentHandler handler, Metadata metadata,
ParseContext context) throws IOException, SAXException, TikaException {
TikaInputStream tis = TikaInputStream.get(stream);
Database db = null;
XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata);
xhtml.startDocument();
String password = null;
PasswordProvider passwordProvider = context.get(PasswordProvider.class);
if (passwordProvider != null) {
password = passwordProvider.getPassword(metadata);
}
try {
if (password == null) {
//do this to ensure encryption/wrong password exception vs. more generic
//"need right codec" error message.
db = new DatabaseBuilder(tis.getFile())
.setCodecProvider(new CryptCodecProvider())
.setReadOnly(true).open();
} else {
db = new DatabaseBuilder(tis.getFile())
.setCodecProvider(new CryptCodecProvider(password))
.setReadOnly(true).open();
}
db.setLinkResolver(IGNORE_LINK_RESOLVER);//just in case
JackcessExtractor ex = new JackcessExtractor(metadata, context, locale);
ex.parse(db, xhtml);
} catch (IllegalStateException e) {
if (e.getMessage() != null && e.getMessage().contains("Incorrect password")) {
throw new EncryptedDocumentException(e);
}
throw e;
} finally {
if (db != null) {
try {
db.close();
} catch (IOException e) {
//swallow = silent close
}
}
}
xhtml.endDocument();
}
private static final class IgnoreLinkResolver implements LinkResolver {
//If links are resolved, Jackcess might try to open and process
//any file on the current system that is specified as a linked db.
//This could be a nasty security issue.
@Override
public Database resolveLinkedDatabase(Database database, String s) throws IOException {
throw new AssertionError("DO NOT ALLOW RESOLVING OF LINKS!!!");
}
}
}