001/*
002 * (C) Copyright 2006-2016 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Nuxeo - initial API and implementation
018 */
019package org.nuxeo.ecm.platform.mimetype.detectors;
020
021import static java.nio.charset.StandardCharsets.UTF_8;
022
023import java.io.File;
024import java.io.IOException;
025import java.util.Map;
026import java.util.zip.ZipEntry;
027import java.util.zip.ZipFile;
028
029import org.apache.commons.io.FileUtils;
030import org.apache.commons.logging.Log;
031import org.apache.commons.logging.LogFactory;
032import org.nuxeo.common.utils.ZipUtils;
033import org.nuxeo.runtime.api.Framework;
034
035import net.sf.jmimemagic.MagicDetector;
036
037public class OOoMimetypeSniffer implements MagicDetector {
038
039    private static final Log log = LogFactory.getLog(OOoMimetypeSniffer.class);
040
041    @Override
042    public String getDisplayName() {
043        return "OOo 1.x & OpenDocument MimeType Detector";
044    }
045
046    @Override
047    public String[] getHandledExtensions() {
048        return new String[] { "ods", "ots", "odt", "ott", "odp", "otp", "odg", "otg", "otm", "oth", "odi", "oti", "odf",
049                "otf", "odc", "otc", "sxw", "stw", "sxg", "sxc", "stc", "sxi", "sti", "sxd", "std", "sxm", };
050    }
051
052    @Override
053    public String[] getHandledTypes() {
054        return new String[] { "application/vnd.oasis.opendocument.spreadsheet",
055                "application/vnd.oasis.opendocument.spreadsheet-template", "application/vnd.oasis.opendocument.text",
056                "application/vnd.oasis.opendocument.text-template", "application/vnd.oasis.opendocument.presentation",
057                "application/vnd.oasis.opendocument.presentation-template",
058                "application/vnd.oasis.opendocument.graphics", "application/vnd.oasis.opendocument.graphics-template",
059                "application/vnd.oasis.opendocument.text-master", "application/vnd.oasis.opendocument.text-web",
060                "application/vnd.oasis.opendocument.image", "application/vnd.oasis.opendocument.image-template",
061                "application/vnd.oasis.opendocument.formula", "application/vnd.oasis.opendocument.formula-template",
062                "application/vnd.oasis.opendocument.chart", "application/vnd.oasis.opendocument.chart-template",
063                // OOo 1.x file format
064                "application/vnd.sun.xml.writer", "application/vnd.sun.xml.writer.template",
065                "application/vnd.sun.xml.writer.global", "application/vnd.sun.xml.calc",
066                "application/vnd.sun.xml.calc.template", "application/vnd.sun.xml.impress",
067                "application/vnd.sun.xml.impress.template", "application/vnd.sun.xml.draw",
068                "application/vnd.sun.xml.draw.template", "application/vnd.sun.xml.math", };
069    }
070
071    @Override
072    public String getName() {
073        return "ooodetector";
074    }
075
076    @Override
077    public String getVersion() {
078        return "0.2";
079    }
080
081    @Override
082    public String[] process(byte[] data, int offset, int length, long bitmask, char comparator, String mimeType,
083            @SuppressWarnings("rawtypes") Map params) {
084        String[] mimetypes = {};
085        File file = null;
086        try {
087            file = Framework.createTempFile("magicdetector", ".xml");
088            FileUtils.writeByteArrayToFile(file, data);
089            mimetypes = guessOOo(file);
090        } catch (IOException e) {
091            log.error(e);
092        } finally {
093            if (file != null) {
094                file.delete();
095            }
096        }
097        return mimetypes;
098    }
099
100    @Override
101    public String[] process(File file, int offset, int length, long bitmask, char comparator, String mimeType,
102            @SuppressWarnings("rawtypes") Map params) {
103        return guessOOo(file);
104    }
105
106    public String[] guessOOo(File file) {
107
108        String[] mimetype = {};
109        File tempFile = null;
110
111        try (ZipFile zip = new ZipFile(file)) {
112            ZipEntry entry = zip.getEntry("mimetype");
113
114            if (entry != null) {
115                // we have an opendocument so lets unzip
116
117                // unzip file to process xml content
118                tempFile = Framework.createTempFile("nxMimeTypeDetector_", ".dir");
119                tempFile.delete(); // to be able to create a dir under this name
120                if (!tempFile.isDirectory()) {
121                    tempFile.mkdir();
122                }
123                ZipUtils.unzip(file, tempFile);
124
125                // retrieves mimetypefile
126                String path = tempFile.getAbsolutePath();
127                path += File.separator + "mimetype";
128                File mimetypeFile = new File(path);
129                mimetype = new String[] { FileUtils.readFileToString(mimetypeFile, UTF_8) };
130            }
131        } catch (IOException e) {
132            // probably not a zip file
133        } finally {
134            if (tempFile != null) {
135                FileUtils.deleteQuietly(tempFile);
136            }
137        }
138
139        return mimetype;
140    }
141
142}