001/*
002 * (C) Copyright 2006-2007 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Nuxeo - initial API and implementation
016 *
017 * $Id: OOoMimetypeSniffer.java 20548 2007-06-15 13:08:36Z ogrisel $
018 */
019
020package org.nuxeo.ecm.platform.mimetype.detectors;
021
022import java.io.File;
023import java.io.IOException;
024import java.util.Map;
025import java.util.zip.ZipEntry;
026import java.util.zip.ZipFile;
027
028import net.sf.jmimemagic.MagicDetector;
029
030import org.apache.commons.logging.Log;
031import org.apache.commons.logging.LogFactory;
032import org.nuxeo.common.utils.FileUtils;
033import org.nuxeo.common.utils.ZipUtils;
034
035public class OOoMimetypeSniffer implements MagicDetector {
036
037    private static final Log log = LogFactory.getLog(OOoMimetypeSniffer.class);
038
039    public String getDisplayName() {
040        return "OOo 1.x & OpenDocument MimeType Detector";
041    }
042
043    public String[] getHandledExtensions() {
044        return new String[] { "ods", "ots", "odt", "ott", "odp", "otp", "odg", "otg", "otm", "oth", "odi", "oti",
045                "odf", "otf", "odc", "otc", "sxw", "stw", "sxg", "sxc", "stc", "sxi", "sti", "sxd", "std", "sxm", };
046    }
047
048    public String[] getHandledTypes() {
049        return new String[] { "application/vnd.oasis.opendocument.spreadsheet",
050                "application/vnd.oasis.opendocument.spreadsheet-template", "application/vnd.oasis.opendocument.text",
051                "application/vnd.oasis.opendocument.text-template", "application/vnd.oasis.opendocument.presentation",
052                "application/vnd.oasis.opendocument.presentation-template",
053                "application/vnd.oasis.opendocument.graphics", "application/vnd.oasis.opendocument.graphics-template",
054                "application/vnd.oasis.opendocument.text-master", "application/vnd.oasis.opendocument.text-web",
055                "application/vnd.oasis.opendocument.image",
056                "application/vnd.oasis.opendocument.image-template",
057                "application/vnd.oasis.opendocument.formula",
058                "application/vnd.oasis.opendocument.formula-template",
059                "application/vnd.oasis.opendocument.chart",
060                "application/vnd.oasis.opendocument.chart-template",
061                // OOo 1.x file format
062                "application/vnd.sun.xml.writer", "application/vnd.sun.xml.writer.template",
063                "application/vnd.sun.xml.writer.global", "application/vnd.sun.xml.calc",
064                "application/vnd.sun.xml.calc.template", "application/vnd.sun.xml.impress",
065                "application/vnd.sun.xml.impress.template", "application/vnd.sun.xml.draw",
066                "application/vnd.sun.xml.draw.template", "application/vnd.sun.xml.math", };
067    }
068
069    public String getName() {
070        return "ooodetector";
071    }
072
073    public String getVersion() {
074        return "0.2";
075    }
076
077    public String[] process(byte[] data, int offset, int length, long bitmask, char comparator, String mimeType,
078            Map params) {
079        String[] mimetypes = {};
080        File file = null;
081        try {
082            file = File.createTempFile("magicdetector", ".xml");
083            FileUtils.writeFile(file, data);
084            mimetypes = guessOOo(file);
085        } catch (IOException e) {
086            log.error(e);
087        } finally {
088            if (file != null) {
089                file.delete();
090            }
091        }
092        return mimetypes;
093    }
094
095    public String[] process(File file, int offset, int length, long bitmask, char comparator, String mimeType,
096            Map params) {
097        return guessOOo(file);
098    }
099
100    public String[] guessOOo(File file) {
101
102        String[] mimetype = {};
103        File tempFile = null;
104
105        try {
106            ZipFile zip = new ZipFile(file);
107            ZipEntry entry = zip.getEntry("mimetype");
108
109            if (entry != null) {
110                // we have an opendocument so lets unzip
111
112                // unzip file to process xml content
113                tempFile = File.createTempFile("nxMimeTypeDetector_", ".dir");
114                tempFile.delete(); // to be able to create a dir under this name
115                if (!tempFile.isDirectory()) {
116                    tempFile.mkdir();
117                }
118                ZipUtils.unzip(file, tempFile);
119
120                // retrieves mimetypefile
121                String path = tempFile.getAbsolutePath();
122                path += File.separator + "mimetype";
123                File mimetypeFile = new File(path);
124                mimetype = new String[] { FileUtils.readFile(mimetypeFile) };
125            }
126        } catch (IOException e) {
127            // probably not a zip file
128        } finally {
129            if (tempFile != null) {
130                FileUtils.deleteTree(tempFile);
131            }
132        }
133
134        return mimetype;
135    }
136
137}