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92 lines
3.9 KiB
Java
92 lines
3.9 KiB
Java
/*
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* Autopsy Forensic Browser
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*
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* Copyright 2015 Basis Technology Corp.
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* Contact: carrier <at> sleuthkit <dot> org
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.sleuthkit.autopsy.experimental.autoingest;
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import java.io.IOException;
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import java.nio.file.Path;
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import java.util.HashMap;
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import javax.annotation.concurrent.Immutable;
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import javax.xml.parsers.DocumentBuilder;
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import javax.xml.parsers.DocumentBuilderFactory;
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import javax.xml.parsers.ParserConfigurationException;
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import javax.xml.xpath.XPath;
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import javax.xml.xpath.XPathConstants;
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import javax.xml.xpath.XPathExpression;
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import javax.xml.xpath.XPathFactory;
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import org.openide.util.lookup.ServiceProvider;
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import org.w3c.dom.Document;
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import org.w3c.dom.Element;
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import org.xml.sax.SAXException;
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@Immutable
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@ServiceProvider(service = ManifestFileParser.class)
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public final class AutopsyManifestFileParser implements ManifestFileParser {
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private static final String MANIFEST_FILE_NAME_SIGNATURE = "_Manifest.xml";
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private static final String ROOT_ELEM_TAG_NAME = "Manifest";
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private static final String CASE_NAME_XPATH = "/Manifest/Collection/Name/text()";
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private static final String DEVICE_ID_XPATH = "/Manifest/Collection/Image/ID/text()";
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private static final String DATA_SOURCE_NAME_XPATH = "/Manifest/Collection/Image/Name/text()";
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@Override
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public boolean fileIsManifest(Path filePath) {
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boolean fileIsManifest = false;
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try {
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Path fileName = filePath.getFileName();
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if (fileName.toString().endsWith(MANIFEST_FILE_NAME_SIGNATURE)) {
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Document doc = this.createManifestDOM(filePath);
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Element docElement = doc.getDocumentElement();
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fileIsManifest = docElement.getTagName().equals(ROOT_ELEM_TAG_NAME);
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}
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} catch (Exception unused) {
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fileIsManifest = false;
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}
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return fileIsManifest;
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}
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@Override
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public Manifest parse(Path filePath) throws ManifestFileParserException {
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if (!fileIsManifest(filePath)) {
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throw new ManifestFileParserException(String.format("%s not recognized as a manifest", filePath));
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}
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try {
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Document doc = this.createManifestDOM(filePath);
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XPath xpath = XPathFactory.newInstance().newXPath();
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XPathExpression expr = xpath.compile(CASE_NAME_XPATH);
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String caseName = (String) expr.evaluate(doc, XPathConstants.STRING);
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expr = xpath.compile(DEVICE_ID_XPATH);
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String deviceId = (String) expr.evaluate(doc, XPathConstants.STRING);
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expr = xpath.compile(DATA_SOURCE_NAME_XPATH);
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String dataSourceName = (String) expr.evaluate(doc, XPathConstants.STRING);
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Path dataSourcePath = filePath.getParent().resolve(dataSourceName);
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return new Manifest(filePath, caseName, deviceId, dataSourcePath, new HashMap<>());
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} catch (Exception ex) {
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throw new ManifestFileParserException(String.format("Error parsing manifest %s", filePath), ex);
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}
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}
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private Document createManifestDOM(Path manifestFilePath) throws ParserConfigurationException, SAXException, IOException {
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DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
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DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
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return docBuilder.parse(manifestFilePath.toFile());
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}
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}
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