001/*
002 * (C) Copyright 2006-2015 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
020package org.nuxeo.ecm.platform.convert.ooomanager;
021
022import java.io.File;
023import java.io.IOException;
024import java.lang.reflect.Field;
025import java.util.ArrayList;
026import java.util.Arrays;
027import java.util.List;
028
029import org.apache.commons.lang3.SystemUtils;
030
031import org.nuxeo.runtime.api.Framework;
032
033public class ConfigBuilderHelper {
034
035    private static final String JPIPE_LIB_PATH_PROPERTY_KEY = "jod.jpipe.lib.path";
036
037    private static final String[] UNIX_JPIPE_PATHS = { "/usr/lib/ure/lib" };
038
039    private static final String[] MAC_JPIPE_PATHS = { "/Applications/OpenOffice.org.app/Contents/basis-link/ure-link/lib" };
040
041    private ConfigBuilderHelper() {
042    }
043
044    protected static void hackClassLoader() throws IOException {
045        try {
046            String ldPath = getLibPath();
047            Field field = ClassLoader.class.getDeclaredField("usr_paths");
048            field.setAccessible(true);
049            String[] paths = (String[]) field.get(null);
050            for (String path : paths) {
051                if (ldPath.equals(path)) {
052                    return;
053                }
054            }
055            String[] tmp = new String[paths.length + 1];
056            System.arraycopy(paths, 0, tmp, 0, paths.length);
057            tmp[paths.length] = ldPath;
058            field.set(null, tmp);
059            System.setProperty("java.library.path", System.getProperty("java.library.path"));
060
061        } catch (IllegalAccessException e) {
062            throw new IOException("Failed to get permissions to set library path");
063        } catch (NoSuchFieldException e) {
064            throw new IOException("Failed to get field handle to set library path");
065        }
066    }
067
068    protected static String getLibPath() throws IOException {
069        String jpipeLibPath = Framework.getProperty(JPIPE_LIB_PATH_PROPERTY_KEY);
070        if (jpipeLibPath != null) {
071            return jpipeLibPath;
072        }
073        jpipeLibPath = findJlibPipe();
074        if (jpipeLibPath != null) {
075            return jpipeLibPath;
076        }
077        throw new IOException("Failed to get jPipe LIbrary path.");
078    }
079
080    protected static String findJlibPipe() {
081        List<String> possiblePaths = new ArrayList<>();
082
083        if (SystemUtils.IS_OS_LINUX) {
084            possiblePaths.addAll(Arrays.asList(UNIX_JPIPE_PATHS));
085        } else if (SystemUtils.IS_OS_MAC_OSX) {
086            possiblePaths.addAll(Arrays.asList(MAC_JPIPE_PATHS));
087        }
088
089        for (String path : possiblePaths) {
090            if (new File(path).exists()) {
091                return path;
092            }
093        }
094        return null;
095    }
096
097    /**
098     * @deprecated Since 7.4. Use {@link SystemUtils#IS_OS_MAC_OSX}
099     */
100    @Deprecated
101    protected static boolean isMac() {
102        return SystemUtils.IS_OS_MAC_OSX;
103    }
104
105    /**
106     * @deprecated Since 7.4. Use {@link SystemUtils#IS_OS_LINUX}
107     */
108    @Deprecated
109    protected static boolean isLinux() {
110        return SystemUtils.IS_OS_LINUX;
111    }
112
113}