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 *
019 */
020
021package org.nuxeo.ecm.platform.mimetype.detectors;
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 net.sf.jmimemagic.MagicDetector;
030
031import org.apache.commons.logging.Log;
032import org.apache.commons.logging.LogFactory;
033
034import org.nuxeo.common.utils.FileUtils;
035import org.nuxeo.common.utils.ZipUtils;
036import org.nuxeo.runtime.api.Framework;
037
038public class OOoMimetypeSniffer implements MagicDetector {
039
040    private static final Log log = LogFactory.getLog(OOoMimetypeSniffer.class);
041
042    @Override
043    public String getDisplayName() {
044        return "OOo 1.x & OpenDocument MimeType Detector";
045    }
046
047    @Override
048    public String[] getHandledExtensions() {
049        return new String[] { "ods", "ots", "odt", "ott", "odp", "otp", "odg", "otg", "otm", "oth", "odi", "oti",
050                "odf", "otf", "odc", "otc", "sxw", "stw", "sxg", "sxc", "stc", "sxi", "sti", "sxd", "std", "sxm", };
051    }
052
053    @Override
054    public String[] getHandledTypes() {
055        return new String[] { "application/vnd.oasis.opendocument.spreadsheet",
056                "application/vnd.oasis.opendocument.spreadsheet-template", "application/vnd.oasis.opendocument.text",
057                "application/vnd.oasis.opendocument.text-template", "application/vnd.oasis.opendocument.presentation",
058                "application/vnd.oasis.opendocument.presentation-template",
059                "application/vnd.oasis.opendocument.graphics", "application/vnd.oasis.opendocument.graphics-template",
060                "application/vnd.oasis.opendocument.text-master", "application/vnd.oasis.opendocument.text-web",
061                "application/vnd.oasis.opendocument.image",
062                "application/vnd.oasis.opendocument.image-template",
063                "application/vnd.oasis.opendocument.formula",
064                "application/vnd.oasis.opendocument.formula-template",
065                "application/vnd.oasis.opendocument.chart",
066                "application/vnd.oasis.opendocument.chart-template",
067                // OOo 1.x file format
068                "application/vnd.sun.xml.writer", "application/vnd.sun.xml.writer.template",
069                "application/vnd.sun.xml.writer.global", "application/vnd.sun.xml.calc",
070                "application/vnd.sun.xml.calc.template", "application/vnd.sun.xml.impress",
071                "application/vnd.sun.xml.impress.template", "application/vnd.sun.xml.draw",
072                "application/vnd.sun.xml.draw.template", "application/vnd.sun.xml.math", };
073    }
074
075    @Override
076    public String getName() {
077        return "ooodetector";
078    }
079
080    @Override
081    public String getVersion() {
082        return "0.2";
083    }
084
085    @Override
086    public String[] process(byte[] data, int offset, int length, long bitmask, char comparator, String mimeType,
087            Map params) {
088        String[] mimetypes = {};
089        File file = null;
090        try {
091            file = Framework.createTempFile("magicdetector", ".xml");
092            FileUtils.writeFile(file, data);
093            mimetypes = guessOOo(file);
094        } catch (IOException e) {
095            log.error(e);
096        } finally {
097            if (file != null) {
098                file.delete();
099            }
100        }
101        return mimetypes;
102    }
103
104    @Override
105    public String[] process(File file, int offset, int length, long bitmask, char comparator, String mimeType,
106            Map params) {
107        return guessOOo(file);
108    }
109
110    public String[] guessOOo(File file) {
111
112        String[] mimetype = {};
113        File tempFile = null;
114
115        try {
116            ZipFile zip = new ZipFile(file);
117            ZipEntry entry = zip.getEntry("mimetype");
118
119            if (entry != null) {
120                // we have an opendocument so lets unzip
121
122                // unzip file to process xml content
123                tempFile = Framework.createTempFile("nxMimeTypeDetector_", ".dir");
124                tempFile.delete(); // to be able to create a dir under this name
125                if (!tempFile.isDirectory()) {
126                    tempFile.mkdir();
127                }
128                ZipUtils.unzip(file, tempFile);
129
130                // retrieves mimetypefile
131                String path = tempFile.getAbsolutePath();
132                path += File.separator + "mimetype";
133                File mimetypeFile = new File(path);
134                mimetype = new String[] { FileUtils.readFile(mimetypeFile) };
135            }
136        } catch (IOException e) {
137            // probably not a zip file
138        } finally {
139            if (tempFile != null) {
140                FileUtils.deleteTree(tempFile);
141            }
142        }
143
144        return mimetype;
145    }
146
147}