org.panbox.desktop.common.urihandler.PanboxURICmd.java Source code

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Here is the source code for org.panbox.desktop.common.urihandler.PanboxURICmd.java

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/*
 * 
 *               Panbox - encryption for cloud storage 
 *      Copyright (C) 2014-2015 by Fraunhofer SIT and Sirrix AG 
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * Additonally, third party code may be provided with notices and open source
 * licenses from communities and third parties that govern the use of those
 * portions, and any licenses granted hereunder do not alter any rights and
 * obligations you may have under such open source licenses, however, the
 * disclaimer of warranty and limitation of liability provisions of the GPLv3 
 * will apply to all the product.
 * 
 */
package org.panbox.desktop.common.urihandler;

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;

import org.apache.log4j.Logger;

import ezvcard.util.org.apache.commons.codec.binary.Base64;

/**
 * @author palige
 * 
 */
public abstract class PanboxURICmd {

    private static final Logger logger = Logger.getLogger(PanboxURICmd.class);

    public PanboxURICmd(byte[]... params) throws Exception {
        // tbi in subclasses
    }

    public abstract String getName();

    public abstract void execute() throws Exception;

    public static synchronized PanboxURICmd getCommandHander(String cmdstring)
            throws InstantiationException, IllegalAccessException, ClassNotFoundException, IllegalArgumentException,
            InvocationTargetException, NoSuchMethodException, SecurityException {

        String[] parts = cmdstring.split("\\?");

        if ((parts != null) && (parts.length == 2)) {
            String[] params = parts[1].split(":");
            ArrayList<byte[]> bparams = new ArrayList<byte[]>();
            for (int i = 0; i < params.length; i++) {
                bparams.add(Base64.decodeBase64(params[i]));
            }

            if ((parts[0] != null) && !parts[0].isEmpty()) {
                return resolveInstance(parts[0], bparams.toArray(new byte[bparams.size()][]));
            } else {
                logger.error("Could not determine operation to execute " + cmdstring);
            }
        } else {
            logger.error("Could not parse command string " + cmdstring);
        }
        return null;
    }

    private static synchronized PanboxURICmd resolveInstance(String cmdIdentifier, byte[]... params)
            throws ClassNotFoundException, InstantiationException, IllegalAccessException, IllegalArgumentException,
            InvocationTargetException, NoSuchMethodException, SecurityException {
        Package p = PanboxURICmd.class.getPackage();
        String lookup = p.getName() + "." + PanboxURICmd.class.getSimpleName() + cmdIdentifier;
        Class<?> tmp = Class.forName(lookup);
        return (PanboxURICmd) tmp.getConstructor(byte[][].class).newInstance(new Object[] { params });
    }
}