LogicalImagerDSProcessor.java

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/*
 * Autopsy Forensic Browser
 *
 * Copyright 2011-2019 Basis Technology Corp.
 * Contact: carrier <at> sleuthkit <dot> org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.sleuthkit.autopsy.logicalimager.dsp;

import java.io.File;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import java.util.UUID;
import javax.swing.JPanel;
import org.openide.util.NbBundle.Messages;
import org.openide.util.lookup.ServiceProvider;
import org.openide.util.lookup.ServiceProviders;
import org.sleuthkit.autopsy.casemodule.Case;
import org.sleuthkit.autopsy.casemodule.NoCurrentCaseException;
import org.sleuthkit.autopsy.corecomponentinterfaces.DataSourceProcessor;
import org.sleuthkit.autopsy.corecomponentinterfaces.DataSourceProcessorCallback;
import org.sleuthkit.autopsy.corecomponentinterfaces.DataSourceProcessorProgressMonitor;
import org.sleuthkit.datamodel.Content;

@ServiceProviders(value={
    @ServiceProvider(service=DataSourceProcessor.class)}
)
public final class LogicalImagerDSProcessor implements DataSourceProcessor {

    private static final String LOGICAL_IMAGER_DIR = "LogicalImager"; //NON-NLS
    private final LogicalImagerPanel configPanel;
    private AddLogicalImageTask addLogicalImageTask;
    
    /*
     * Constructs a Logical Imager data source processor that implements the
     * DataSourceProcessor service provider interface to allow integration with
     * the add data source wizard. It also provides a run method overload to
     * allow it to be used independently of the wizard.
     */
    public LogicalImagerDSProcessor() {
        configPanel = LogicalImagerPanel.createInstance(LogicalImagerDSProcessor.class.getName());
    }

    @Messages({"LogicalImagerDSProcessor.dataSourceType=Autopsy Imager"})
    public static String getType() {
        return Bundle.LogicalImagerDSProcessor_dataSourceType();
    }

    @Override
    public String getDataSourceType() {
        return Bundle.LogicalImagerDSProcessor_dataSourceType();
    }

    @Override
    public JPanel getPanel() {
        configPanel.reset();
        return configPanel;
    }

    @Override
    public boolean isPanelValid() {
        return configPanel.validatePanel();
    }

    @Messages({
        "# {0} - imageDirPath", "LogicalImagerDSProcessor.imageDirPathNotFound={0} not found.\nUSB drive has been ejected.",
        "# {0} - directory", "LogicalImagerDSProcessor.failToCreateDirectory=Failed to create directory {0}",
        "# {0} - directory", "LogicalImagerDSProcessor.directoryAlreadyExists=Directory {0} already exists",
        "# {0} - file", "LogicalImagerDSProcessor.failToGetCanonicalPath=Fail to get canonical path for {0}",
        "LogicalImagerDSProcessor.noCurrentCase=No current case",
    })
    @Override
    public void run(DataSourceProcessorProgressMonitor progressMonitor, DataSourceProcessorCallback callback) {
        configPanel.storeSettings();
        
        Path imageDirPath = configPanel.getImageDirPath();
        List<String> errorList = new ArrayList<>();
        List<Content> emptyDataSources = new ArrayList<>();
        
        if (!imageDirPath.toFile().exists()) {
            // This can happen if the USB drive was selected in the panel, but
            // was ejected before pressing the NEXT button
            // TODO: Better ways to detect ejected USB drive?
            String msg = Bundle.LogicalImagerDSProcessor_imageDirPathNotFound(imageDirPath.toString());
            errorList.add(msg);
            callback.done(DataSourceProcessorCallback.DataSourceProcessorResult.CRITICAL_ERRORS, errorList, emptyDataSources);
            return;
        }
        
        // Create the LogicalImager directory under ModuleDirectory
        String moduleDirectory = Case.getCurrentCase().getModuleDirectory();
        File logicalImagerDir = Paths.get(moduleDirectory, LOGICAL_IMAGER_DIR).toFile();
        if (!logicalImagerDir.exists() && !logicalImagerDir.mkdir()) {
            // create failed
            String msg = Bundle.LogicalImagerDSProcessor_failToCreateDirectory(logicalImagerDir);
            errorList.add(msg);
            callback.done(DataSourceProcessorCallback.DataSourceProcessorResult.CRITICAL_ERRORS, errorList, emptyDataSources);
            return;
        }
        File dest = Paths.get(logicalImagerDir.toString(), imageDirPath.getFileName().toString()).toFile();
        if (dest.exists()) {
            // Destination directory already exists
            String msg = Bundle.LogicalImagerDSProcessor_directoryAlreadyExists(dest.toString());
            errorList.add(msg);
            callback.done(DataSourceProcessorCallback.DataSourceProcessorResult.CRITICAL_ERRORS, errorList, emptyDataSources);
            return;
        }
        File src = imageDirPath.toFile();
        
        // Get all VHD files in the src directory
        List<String> imagePaths = new ArrayList<>();
        for (File f : src.listFiles()) {
            if (f.getName().endsWith(".vhd")) {
                try {
                    imagePaths.add(f.getCanonicalPath());
                } catch (IOException ex) {
                    String msg = Bundle.LogicalImagerDSProcessor_failToGetCanonicalPath(f.getName());
                    errorList.add(msg);
                    callback.done(DataSourceProcessorCallback.DataSourceProcessorResult.CRITICAL_ERRORS, errorList, emptyDataSources);
                    return;
                }
            }
        }
        try {
            String deviceId = UUID.randomUUID().toString();
            String timeZone = Calendar.getInstance().getTimeZone().getID();
            run(deviceId, imagePaths,
                timeZone, src, dest,
                progressMonitor, callback);
        } catch (NoCurrentCaseException ex) {
            String msg = Bundle.LogicalImagerDSProcessor_noCurrentCase();
            errorList.add(msg);
            callback.done(DataSourceProcessorCallback.DataSourceProcessorResult.CRITICAL_ERRORS, errorList, emptyDataSources);
            return;
        }
    }
    
    private void run(String deviceId, List<String> imagePaths, String timeZone,  
            File src, File dest,
            DataSourceProcessorProgressMonitor progressMonitor, DataSourceProcessorCallback callback
    ) throws NoCurrentCaseException {
        addLogicalImageTask = new AddLogicalImageTask(deviceId, imagePaths, timeZone, src, dest,
                progressMonitor, callback);
        new Thread(addLogicalImageTask).start();
    }

    @Override
    public void cancel() {
        if (addLogicalImageTask != null) {
            addLogicalImageTask.cancelTask();
        }
    }

    @Override
    public void reset() {
        configPanel.reset();
    }

}