Case.java

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/*
 * Autopsy Forensic Browser
 *
 * Copyright 2012-2020 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.casemodule;

import org.sleuthkit.autopsy.featureaccess.FeatureAccessUtils;
import com.google.common.annotations.Beta;
import com.google.common.eventbus.Subscribe;
import org.sleuthkit.autopsy.casemodule.multiusercases.CaseNodeData;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.File;
import java.nio.file.InvalidPathException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TimeZone;
import java.util.UUID;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import javax.annotation.concurrent.GuardedBy;
import javax.annotation.concurrent.ThreadSafe;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
import org.openide.util.Lookup;
import org.openide.util.NbBundle;
import org.openide.util.NbBundle.Messages;
import org.openide.util.actions.CallableSystemAction;
import org.openide.windows.WindowManager;
import org.sleuthkit.autopsy.actions.OpenOutputFolderAction;
import org.sleuthkit.autopsy.appservices.AutopsyService;
import org.sleuthkit.autopsy.appservices.AutopsyService.CaseContext;
import org.sleuthkit.autopsy.casemodule.CaseMetadata.CaseMetadataException;
import org.sleuthkit.autopsy.casemodule.datasourcesummary.DataSourceSummaryAction;
import org.sleuthkit.autopsy.casemodule.events.AddingDataSourceEvent;
import org.sleuthkit.autopsy.casemodule.events.AddingDataSourceFailedEvent;
import org.sleuthkit.autopsy.casemodule.events.BlackBoardArtifactTagAddedEvent;
import org.sleuthkit.autopsy.casemodule.events.BlackBoardArtifactTagDeletedEvent;
import org.sleuthkit.autopsy.casemodule.events.CommentChangedEvent;
import org.sleuthkit.autopsy.casemodule.events.ContentTagAddedEvent;
import org.sleuthkit.autopsy.casemodule.events.ContentTagDeletedEvent;
import org.sleuthkit.autopsy.casemodule.events.DataSourceAddedEvent;
import org.sleuthkit.autopsy.casemodule.events.DataSourceDeletedEvent;
import org.sleuthkit.autopsy.casemodule.events.DataSourceNameChangedEvent;
import org.sleuthkit.autopsy.casemodule.events.ReportAddedEvent;
import org.sleuthkit.autopsy.casemodule.multiusercases.CaseNodeData.CaseNodeDataException;
import org.sleuthkit.autopsy.casemodule.multiusercases.CoordinationServiceUtils;
import org.sleuthkit.autopsy.casemodule.services.Services;
import org.sleuthkit.autopsy.commonpropertiessearch.CommonAttributeSearchAction;
import org.sleuthkit.autopsy.communications.OpenCommVisualizationToolAction;
import org.sleuthkit.autopsy.coordinationservice.CoordinationService;
import org.sleuthkit.autopsy.coordinationservice.CoordinationService.CategoryNode;
import org.sleuthkit.autopsy.coordinationservice.CoordinationService.CoordinationServiceException;
import org.sleuthkit.autopsy.coordinationservice.CoordinationService.Lock;
import org.sleuthkit.autopsy.core.RuntimeProperties;
import org.sleuthkit.autopsy.core.UserPreferences;
import org.sleuthkit.autopsy.core.UserPreferencesException;
import org.sleuthkit.autopsy.corecomponentinterfaces.CoreComponentControl;
import org.sleuthkit.autopsy.coreutils.DriveUtils;
import org.sleuthkit.autopsy.coreutils.FileUtil;
import org.sleuthkit.autopsy.coreutils.Logger;
import org.sleuthkit.autopsy.coreutils.MessageNotifyUtil;
import org.sleuthkit.autopsy.coreutils.NetworkUtils;
import org.sleuthkit.autopsy.coreutils.PlatformUtil;
import org.sleuthkit.autopsy.coreutils.ThreadUtils;
import org.sleuthkit.autopsy.coreutils.TimeZoneUtils;
import org.sleuthkit.autopsy.coreutils.Version;
import org.sleuthkit.autopsy.events.AutopsyEvent;
import org.sleuthkit.autopsy.events.AutopsyEventException;
import org.sleuthkit.autopsy.events.AutopsyEventPublisher;
import org.sleuthkit.autopsy.filequery.OpenFileDiscoveryAction;
import org.sleuthkit.autopsy.ingest.IngestJob;
import org.sleuthkit.autopsy.ingest.IngestManager;
import org.sleuthkit.autopsy.ingest.IngestServices;
import org.sleuthkit.autopsy.ingest.ModuleDataEvent;
import org.sleuthkit.autopsy.keywordsearchservice.KeywordSearchService;
import org.sleuthkit.autopsy.keywordsearchservice.KeywordSearchServiceException;
import org.sleuthkit.autopsy.progress.LoggingProgressIndicator;
import org.sleuthkit.autopsy.progress.ModalDialogProgressIndicator;
import org.sleuthkit.autopsy.progress.ProgressIndicator;
import org.sleuthkit.autopsy.timeline.OpenTimelineAction;
import org.sleuthkit.autopsy.timeline.events.TimelineEventAddedEvent;
import org.sleuthkit.datamodel.Blackboard;
import org.sleuthkit.datamodel.BlackboardArtifact;
import org.sleuthkit.datamodel.BlackboardArtifactTag;
import org.sleuthkit.datamodel.CaseDbConnectionInfo;
import org.sleuthkit.datamodel.Content;
import org.sleuthkit.datamodel.ContentTag;
import org.sleuthkit.datamodel.DataSource;
import org.sleuthkit.datamodel.Image;
import org.sleuthkit.datamodel.Report;
import org.sleuthkit.datamodel.SleuthkitCase;
import org.sleuthkit.datamodel.TimelineManager;
import org.sleuthkit.datamodel.SleuthkitCaseAdminUtil;
import org.sleuthkit.datamodel.TskCoreException;
import org.sleuthkit.datamodel.TskDataException;
import org.sleuthkit.datamodel.TskUnsupportedSchemaVersionException;

public class Case {

    private static final int CASE_LOCK_TIMEOUT_MINS = 1;
    private static final int CASE_RESOURCES_LOCK_TIMEOUT_HOURS = 1;
    private static final String SINGLE_USER_CASE_DB_NAME = "autopsy.db";
    private static final String EVENT_CHANNEL_NAME = "%s-Case-Events"; //NON-NLS
    private static final String CACHE_FOLDER = "Cache"; //NON-NLS
    private static final String EXPORT_FOLDER = "Export"; //NON-NLS
    private static final String LOG_FOLDER = "Log"; //NON-NLS
    private static final String REPORTS_FOLDER = "Reports"; //NON-NLS
    private static final String CONFIG_FOLDER = "Config"; // NON-NLS
    private static final String TEMP_FOLDER = "Temp"; //NON-NLS
    private static final String MODULE_FOLDER = "ModuleOutput"; //NON-NLS
    private static final String CASE_ACTION_THREAD_NAME = "%s-case-action";
    private static final String CASE_RESOURCES_THREAD_NAME = "%s-manage-case-resources";
    private static final String NO_NODE_ERROR_MSG_FRAGMENT = "KeeperErrorCode = NoNode";
    private static final Logger logger = Logger.getLogger(Case.class.getName());
    private static final AutopsyEventPublisher eventPublisher = new AutopsyEventPublisher();
    private static final Object caseActionSerializationLock = new Object();
    private static volatile Frame mainFrame;
    private static volatile Case currentCase;
    private final CaseMetadata metadata;
    private volatile ExecutorService caseActionExecutor;
    private CoordinationService.Lock caseLock;
    private SleuthkitCase caseDb;
    private final SleuthkitEventListener sleuthkitEventListener;
    private CollaborationMonitor collaborationMonitor;
    private Services caseServices;

    /*
     * Get a reference to the main window of the desktop application to use to
     * parent pop up dialogs and initialize the application name for use in
     * changing the main window title.
     */
    static {
        WindowManager.getDefault().invokeWhenUIReady(() -> {
            mainFrame = WindowManager.getDefault().getMainWindow();
        });
    }

    public enum CaseType {

        SINGLE_USER_CASE("Single-user case"), //NON-NLS
        MULTI_USER_CASE("Multi-user case");   //NON-NLS

        private final String typeName;

        public static CaseType fromString(String typeName) {
            if (typeName != null) {
                for (CaseType c : CaseType.values()) {
                    if (typeName.equalsIgnoreCase(c.toString())) {
                        return c;
                    }
                }
            }
            return null;
        }

        @Override
        public String toString() {
            return typeName;
        }

        @Messages({
            "Case_caseType_singleUser=Single-user case",
            "Case_caseType_multiUser=Multi-user case"
        })
        String getLocalizedDisplayName() {
            if (fromString(typeName) == SINGLE_USER_CASE) {
                return Bundle.Case_caseType_singleUser();
            } else {
                return Bundle.Case_caseType_multiUser();
            }
        }

        private CaseType(String typeName) {
            this.typeName = typeName;
        }

        @Deprecated
        public boolean equalsName(String otherTypeName) {
            return (otherTypeName == null) ? false : typeName.equals(otherTypeName);
        }

    };

    public enum Events {

        @Deprecated
        NAME,
        @Deprecated
        NUMBER,
        @Deprecated
        EXAMINER,
        ADDING_DATA_SOURCE,
        ADDING_DATA_SOURCE_FAILED,
        DATA_SOURCE_ADDED,
        DATA_SOURCE_DELETED,
        DATA_SOURCE_NAME_CHANGED,
        CURRENT_CASE,
        REPORT_ADDED,
        REPORT_DELETED,
        BLACKBOARD_ARTIFACT_TAG_ADDED,
        BLACKBOARD_ARTIFACT_TAG_DELETED,
        CONTENT_TAG_ADDED,
        CONTENT_TAG_DELETED,
        CASE_DETAILS,
        TAG_DEFINITION_CHANGED,
        TIMELINE_EVENT_ADDED,
        /*
         * An item in the central repository has had its comment modified. The
         * old value is null, the new value is string for current comment.
         */
        CR_COMMENT_CHANGED;

    };

    private final class SleuthkitEventListener {

        @Subscribe
        public void publishTimelineEventAddedEvent(TimelineManager.TimelineEventAddedEvent event) {
            eventPublisher.publish(new TimelineEventAddedEvent(event));
        }

        @SuppressWarnings("deprecation")
        @Subscribe
        public void publishArtifactsPostedEvent(Blackboard.ArtifactsPostedEvent event) {
            for (BlackboardArtifact.Type artifactType : event.getArtifactTypes()) {
                /*
                 * IngestServices.fireModuleDataEvent is deprecated to
                 * discourage ingest module writers from using it (they should
                 * use org.sleuthkit.datamodel.Blackboard.postArtifact(s)
                 * instead), but a way to publish
                 * Blackboard.ArtifactsPostedEvents from the SleuthKit layer as
                 * Autopsy ModuleDataEvents is still needed.
                 */
                IngestServices.getInstance().fireModuleDataEvent(new ModuleDataEvent(
                        event.getModuleName(),
                        artifactType,
                        event.getArtifacts(artifactType)));
            }
        }
    }

    public static void addPropertyChangeListener(PropertyChangeListener listener) {
        addEventSubscriber(Stream.of(Events.values())
                .map(Events::toString)
                .collect(Collectors.toSet()), listener);
    }

    public static void removePropertyChangeListener(PropertyChangeListener listener) {
        removeEventSubscriber(Stream.of(Events.values())
                .map(Events::toString)
                .collect(Collectors.toSet()), listener);
    }

    @Deprecated
    public static void addEventSubscriber(Set<String> eventNames, PropertyChangeListener subscriber) {
        eventPublisher.addSubscriber(eventNames, subscriber);
    }

    public static void addEventTypeSubscriber(Set<Events> eventTypes, PropertyChangeListener subscriber) {
        eventTypes.forEach((Events event) -> {
            eventPublisher.addSubscriber(event.toString(), subscriber);
        });
    }

    @Deprecated
    public static void addEventSubscriber(String eventName, PropertyChangeListener subscriber) {
        eventPublisher.addSubscriber(eventName, subscriber);
    }

    public static void removeEventSubscriber(String eventName, PropertyChangeListener subscriber) {
        eventPublisher.removeSubscriber(eventName, subscriber);
    }

    public static void removeEventSubscriber(Set<String> eventNames, PropertyChangeListener subscriber) {
        eventPublisher.removeSubscriber(eventNames, subscriber);
    }

    public static void removeEventTypeSubscriber(Set<Events> eventTypes, PropertyChangeListener subscriber) {
        eventTypes.forEach((Events event) -> {
            eventPublisher.removeSubscriber(event.toString(), subscriber);
        });
    }

    public static boolean isValidName(String caseName) {
        return !(caseName.contains("\\") || caseName.contains("/") || caseName.contains(":")
                || caseName.contains("*") || caseName.contains("?") || caseName.contains("\"")
                || caseName.contains("<") || caseName.contains(">") || caseName.contains("|"));
    }

    @Deprecated
    public static void createAsCurrentCase(String caseDir, String caseDisplayName, String caseNumber, String examiner, CaseType caseType) throws CaseActionException, CaseActionCancelledException {
        createAsCurrentCase(caseType, caseDir, new CaseDetails(caseDisplayName, caseNumber, examiner, "", "", ""));
    }

    @Messages({
        "Case.exceptionMessage.emptyCaseName=Must specify a case name.",
        "Case.exceptionMessage.emptyCaseDir=Must specify a case directory path."
    })
    public static void createAsCurrentCase(CaseType caseType, String caseDir, CaseDetails caseDetails) throws CaseActionException, CaseActionCancelledException {
        if (caseDetails.getCaseDisplayName().isEmpty()) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_emptyCaseName());
        }
        if (caseDir.isEmpty()) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_emptyCaseDir());
        }
        openAsCurrentCase(new Case(caseType, caseDir, caseDetails), true);
    }

    @Messages({
        "# {0} - exception message", "Case.exceptionMessage.failedToReadMetadata=Failed to read case metadata:\n{0}.",
        "Case.exceptionMessage.cannotOpenMultiUserCaseNoSettings=Multi-user settings are missing (see Tools, Options, Multi-user tab), cannot open a multi-user case."
    })
    public static void openAsCurrentCase(String caseMetadataFilePath) throws CaseActionException {
        CaseMetadata metadata;
        try {
            metadata = new CaseMetadata(Paths.get(caseMetadataFilePath));
        } catch (CaseMetadataException ex) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_failedToReadMetadata(ex.getLocalizedMessage()), ex);
        }
        if (CaseType.MULTI_USER_CASE == metadata.getCaseType() && !UserPreferences.getIsMultiUserModeEnabled()) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_cannotOpenMultiUserCaseNoSettings());
        }
        openAsCurrentCase(new Case(metadata), false);
    }

    public static boolean isCaseOpen() {
        return currentCase != null;
    }

    public static Case getCurrentCase() {
        try {
            return getCurrentCaseThrows();
        } catch (NoCurrentCaseException ex) {
            /*
             * Throw a runtime exception, since this is a programming error.
             */
            throw new IllegalStateException(NbBundle.getMessage(Case.class, "Case.getCurCase.exception.noneOpen"), ex);
        }
    }

    public static Case getCurrentCaseThrows() throws NoCurrentCaseException {
        /*
         * TODO (JIRA-3825): Introduce a reference counting scheme for this get
         * case method.
         */
        Case openCase = currentCase;
        if (openCase == null) {
            throw new NoCurrentCaseException(NbBundle.getMessage(Case.class, "Case.getCurCase.exception.noneOpen"));
        } else {
            return openCase;
        }
    }

    @Messages({
        "# {0} - exception message", "Case.closeException.couldNotCloseCase=Error closing case: {0}",
        "Case.progressIndicatorTitle.closingCase=Closing Case"
    })
    public static void closeCurrentCase() throws CaseActionException {
        synchronized (caseActionSerializationLock) {
            if (null == currentCase) {
                return;
            }
            Case closedCase = currentCase;
            try {
                eventPublisher.publishLocally(new AutopsyEvent(Events.CURRENT_CASE.toString(), closedCase, null));
                logger.log(Level.INFO, "Closing current case {0} ({1}) in {2}", new Object[]{closedCase.getDisplayName(), closedCase.getName(), closedCase.getCaseDirectory()}); //NON-NLS
                currentCase = null;
                closedCase.doCloseCaseAction();
                logger.log(Level.INFO, "Closed current case {0} ({1}) in {2}", new Object[]{closedCase.getDisplayName(), closedCase.getName(), closedCase.getCaseDirectory()}); //NON-NLS
            } catch (CaseActionException ex) {
                logger.log(Level.SEVERE, String.format("Error closing current case %s (%s) in %s", closedCase.getDisplayName(), closedCase.getName(), closedCase.getCaseDirectory()), ex); //NON-NLS                
                throw ex;
            } finally {
                if (RuntimeProperties.runningWithGUI()) {
                    updateGUIForCaseClosed();
                }
            }
        }
    }

    public static void deleteCurrentCase() throws CaseActionException {
        synchronized (caseActionSerializationLock) {
            if (null == currentCase) {
                return;
            }
            CaseMetadata metadata = currentCase.getMetadata();
            closeCurrentCase();
            deleteCase(metadata);
        }
    }

    @Messages({
        "Case.progressIndicatorTitle.deletingDataSource=Removing Data Source"
    })
    static void deleteDataSourceFromCurrentCase(Long dataSourceObjectID) throws CaseActionException {
        synchronized (caseActionSerializationLock) {
            if (null == currentCase) {
                return;
            }

            /*
             * Close the current case to release the shared case lock.
             */
            CaseMetadata caseMetadata = currentCase.getMetadata();
            closeCurrentCase();

            /*
             * Re-open the case with an exclusive case lock, delete the data
             * source, and close the case again, releasing the exclusive case
             * lock.
             */
            Case theCase = new Case(caseMetadata);
            theCase.doOpenCaseAction(Bundle.Case_progressIndicatorTitle_deletingDataSource(), theCase::deleteDataSource, CaseLockType.EXCLUSIVE, false, dataSourceObjectID);

            /*
             * Re-open the case with a shared case lock.
             */
            openAsCurrentCase(new Case(caseMetadata), false);
        }
    }

    @Messages({
        "Case.progressIndicatorTitle.deletingCase=Deleting Case",
        "Case.exceptionMessage.cannotDeleteCurrentCase=Cannot delete current case, it must be closed first.",
        "# {0} - case display name", "Case.exceptionMessage.deletionInterrupted=Deletion of the case {0} was cancelled."
    })
    public static void deleteCase(CaseMetadata metadata) throws CaseActionException {
        synchronized (caseActionSerializationLock) {
            if (null != currentCase) {
                throw new CaseActionException(Bundle.Case_exceptionMessage_cannotDeleteCurrentCase());
            }
        }

        ProgressIndicator progressIndicator;
        if (RuntimeProperties.runningWithGUI()) {
            progressIndicator = new ModalDialogProgressIndicator(mainFrame, Bundle.Case_progressIndicatorTitle_deletingCase());
        } else {
            progressIndicator = new LoggingProgressIndicator();
        }
        progressIndicator.start(Bundle.Case_progressMessage_preparing());
        try {
            if (CaseType.SINGLE_USER_CASE == metadata.getCaseType()) {
                deleteSingleUserCase(metadata, progressIndicator);
            } else {
                try {
                    deleteMultiUserCase(metadata, progressIndicator);
                } catch (InterruptedException ex) {
                    /*
                     * Note that task cancellation is not currently supported
                     * for this code path, so this catch block is not expected
                     * to be executed.
                     */
                    throw new CaseActionException(Bundle.Case_exceptionMessage_deletionInterrupted(metadata.getCaseDisplayName()), ex);
                }
            }
        } finally {
            progressIndicator.finish();
        }
    }

    @Messages({
        "Case.progressIndicatorTitle.creatingCase=Creating Case",
        "Case.progressIndicatorTitle.openingCase=Opening Case",
        "Case.exceptionMessage.cannotLocateMainWindow=Cannot locate main application window"
    })
    private static void openAsCurrentCase(Case newCurrentCase, boolean isNewCase) throws CaseActionException, CaseActionCancelledException {
        synchronized (caseActionSerializationLock) {
            if (null != currentCase) {
                try {
                    closeCurrentCase();
                } catch (CaseActionException ex) {
                    /*
                     * Notify the user and continue (the error has already been
                     * logged in closeCurrentCase.
                     */
                    MessageNotifyUtil.Message.error(ex.getLocalizedMessage());
                }
            }
            try {
                logger.log(Level.INFO, "Opening {0} ({1}) in {2} as the current case", new Object[]{newCurrentCase.getDisplayName(), newCurrentCase.getName(), newCurrentCase.getCaseDirectory()}); //NON-NLS
                String progressIndicatorTitle;
                CaseAction<ProgressIndicator, Object, Void> openCaseAction;
                if (isNewCase) {
                    progressIndicatorTitle = Bundle.Case_progressIndicatorTitle_creatingCase();
                    openCaseAction = newCurrentCase::create;
                } else {
                    progressIndicatorTitle = Bundle.Case_progressIndicatorTitle_openingCase();
                    openCaseAction = newCurrentCase::open;
                }
                newCurrentCase.doOpenCaseAction(progressIndicatorTitle, openCaseAction, CaseLockType.SHARED, true, null);
                currentCase = newCurrentCase;
                logger.log(Level.INFO, "Opened {0} ({1}) in {2} as the current case", new Object[]{newCurrentCase.getDisplayName(), newCurrentCase.getName(), newCurrentCase.getCaseDirectory()}); //NON-NLS
                if (RuntimeProperties.runningWithGUI()) {
                    updateGUIForCaseOpened(newCurrentCase);
                }
                eventPublisher.publishLocally(new AutopsyEvent(Events.CURRENT_CASE.toString(), null, currentCase));
            } catch (CaseActionCancelledException ex) {
                logger.log(Level.INFO, String.format("Cancelled opening %s (%s) in %s as the current case", newCurrentCase.getDisplayName(), newCurrentCase.getName(), newCurrentCase.getCaseDirectory())); //NON-NLS                
                throw ex;
            } catch (CaseActionException ex) {
                logger.log(Level.SEVERE, String.format("Error opening %s (%s) in %s as the current case", newCurrentCase.getDisplayName(), newCurrentCase.getName(), newCurrentCase.getCaseDirectory()), ex); //NON-NLS                
                throw ex;
            }
        }
    }

    private static String displayNameToUniqueName(String caseDisplayName) {
        /*
         * Replace all non-ASCII characters.
         */
        String uniqueCaseName = caseDisplayName.replaceAll("[^\\p{ASCII}]", "_"); //NON-NLS

        /*
         * Replace all control characters.
         */
        uniqueCaseName = uniqueCaseName.replaceAll("[\\p{Cntrl}]", "_"); //NON-NLS

        /*
         * Replace /, \, :, ?, space, ' ".
         */
        uniqueCaseName = uniqueCaseName.replaceAll("[ /?:'\"\\\\]", "_"); //NON-NLS

        /*
         * Make it all lowercase.
         */
        uniqueCaseName = uniqueCaseName.toLowerCase();

        /*
         * Add a time stamp for uniqueness.
         */
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd_HHmmss");
        Date date = new Date();
        uniqueCaseName = uniqueCaseName + "_" + dateFormat.format(date);

        return uniqueCaseName;
    }

    public static void createCaseDirectory(String caseDirPath, CaseType caseType) throws CaseActionException {
        /*
         * Check the case directory path and permissions. The case directory may
         * already exist.
         */
        File caseDir = new File(caseDirPath);
        if (caseDir.exists()) {
            if (caseDir.isFile()) {
                throw new CaseActionException(NbBundle.getMessage(Case.class, "Case.createCaseDir.exception.existNotDir", caseDirPath));
            } else if (!caseDir.canRead() || !caseDir.canWrite()) {
                throw new CaseActionException(NbBundle.getMessage(Case.class, "Case.createCaseDir.exception.existCantRW", caseDirPath));
            }
        }

        /*
         * Create the case directory, if it does not already exist.
         */
        if (!caseDir.mkdirs()) {
            throw new CaseActionException(NbBundle.getMessage(Case.class, "Case.createCaseDir.exception.cantCreate", caseDirPath));
        }

        /*
         * Create the subdirectories of the case directory, if they do not
         * already exist. Note that multi-user cases get an extra layer of
         * subdirectories, one subdirectory per application host machine.
         */
        String hostPathComponent = "";
        if (caseType == CaseType.MULTI_USER_CASE) {
            hostPathComponent = File.separator + NetworkUtils.getLocalHostName();
        }

        Path exportDir = Paths.get(caseDirPath, hostPathComponent, EXPORT_FOLDER);
        if (!exportDir.toFile().mkdirs()) {
            throw new CaseActionException(NbBundle.getMessage(Case.class, "Case.createCaseDir.exception.cantCreateCaseDir", exportDir));
        }

        Path logsDir = Paths.get(caseDirPath, hostPathComponent, LOG_FOLDER);
        if (!logsDir.toFile().mkdirs()) {
            throw new CaseActionException(NbBundle.getMessage(Case.class, "Case.createCaseDir.exception.cantCreateCaseDir", logsDir));
        }

        Path tempDir = Paths.get(caseDirPath, hostPathComponent, TEMP_FOLDER);
        if (!tempDir.toFile().mkdirs()) {
            throw new CaseActionException(NbBundle.getMessage(Case.class, "Case.createCaseDir.exception.cantCreateCaseDir", tempDir));
        }

        Path cacheDir = Paths.get(caseDirPath, hostPathComponent, CACHE_FOLDER);
        if (!cacheDir.toFile().mkdirs()) {
            throw new CaseActionException(NbBundle.getMessage(Case.class, "Case.createCaseDir.exception.cantCreateCaseDir", cacheDir));
        }

        Path moduleOutputDir = Paths.get(caseDirPath, hostPathComponent, MODULE_FOLDER);
        if (!moduleOutputDir.toFile().mkdirs()) {
            throw new CaseActionException(NbBundle.getMessage(Case.class, "Case.createCaseDir.exception.cantCreateModDir", moduleOutputDir));
        }

        Path reportsDir = Paths.get(caseDirPath, hostPathComponent, REPORTS_FOLDER);
        if (!reportsDir.toFile().mkdirs()) {
            throw new CaseActionException(NbBundle.getMessage(Case.class, "Case.createCaseDir.exception.cantCreateReportsDir", reportsDir));
        }
    }

    static Map<Long, String> getImagePaths(SleuthkitCase db) {
        Map<Long, String> imgPaths = new HashMap<>();
        try {
            Map<Long, List<String>> imgPathsList = db.getImagePaths();
            for (Map.Entry<Long, List<String>> entry : imgPathsList.entrySet()) {
                if (entry.getValue().size() > 0) {
                    imgPaths.put(entry.getKey(), entry.getValue().get(0));
                }
            }
        } catch (TskCoreException ex) {
            logger.log(Level.SEVERE, "Error getting image paths", ex); //NON-NLS
        }
        return imgPaths;
    }

    @Messages({
        "Case.creationException.couldNotAcquireResourcesLock=Failed to get lock on case resources"
    })
    private static CoordinationService.Lock acquireCaseResourcesLock(String caseDir) throws CaseActionException {
        try {
            Path caseDirPath = Paths.get(caseDir);
            String resourcesNodeName = CoordinationServiceUtils.getCaseResourcesNodePath(caseDirPath);
            Lock lock = CoordinationService.getInstance().tryGetExclusiveLock(CategoryNode.CASES, resourcesNodeName, CASE_RESOURCES_LOCK_TIMEOUT_HOURS, TimeUnit.HOURS);
            return lock;
        } catch (InterruptedException ex) {
            throw new CaseActionCancelledException(Bundle.Case_exceptionMessage_cancelled());
        } catch (CoordinationServiceException ex) {
            throw new CaseActionException(Bundle.Case_creationException_couldNotAcquireResourcesLock(), ex);
        }
    }

    private static String getNameForTitle() {
        //Method should become unnecessary once technical debt story 3334 is done.
        if (UserPreferences.getAppName().equals(Version.getName())) {
            //Available version number is version number for this application
            return String.format("%s %s", UserPreferences.getAppName(), Version.getVersion());
        } else {
            return UserPreferences.getAppName();
        }
    }

    private static void updateGUIForCaseOpened(Case newCurrentCase) {
        if (RuntimeProperties.runningWithGUI()) {
            SwingUtilities.invokeLater(() -> {
                /*
                 * If the case database was upgraded for a new schema and a
                 * backup database was created, notify the user.
                 */
                SleuthkitCase caseDb = newCurrentCase.getSleuthkitCase();
                String backupDbPath = caseDb.getBackupDatabasePath();
                if (null != backupDbPath) {
                    JOptionPane.showMessageDialog(
                            mainFrame,
                            NbBundle.getMessage(Case.class, "Case.open.msgDlg.updated.msg", backupDbPath),
                            NbBundle.getMessage(Case.class, "Case.open.msgDlg.updated.title"),
                            JOptionPane.INFORMATION_MESSAGE);
                }

                /*
                 * Look for the files for the data sources listed in the case
                 * database and give the user the opportunity to locate any that
                 * are missing.
                 */
                Map<Long, String> imgPaths = getImagePaths(caseDb);
                for (Map.Entry<Long, String> entry : imgPaths.entrySet()) {
                    long obj_id = entry.getKey();
                    String path = entry.getValue();
                    boolean fileExists = (new File(path).isFile() || DriveUtils.driveExists(path));
                    if (!fileExists) {
                        int response = JOptionPane.showConfirmDialog(
                                mainFrame,
                                NbBundle.getMessage(Case.class, "Case.checkImgExist.confDlg.doesntExist.msg", path),
                                NbBundle.getMessage(Case.class, "Case.checkImgExist.confDlg.doesntExist.title"),
                                JOptionPane.YES_NO_OPTION);
                        if (response == JOptionPane.YES_OPTION) {
                            MissingImageDialog.makeDialog(obj_id, caseDb);
                        } else {
                            logger.log(Level.SEVERE, "User proceeding with missing image files"); //NON-NLS

                        }
                    }
                }

                /*
                 * Enable the case-specific actions.
                 */
                CallableSystemAction.get(AddImageAction.class).setEnabled(FeatureAccessUtils.canAddDataSources());
                CallableSystemAction.get(CaseCloseAction.class).setEnabled(true);
                CallableSystemAction.get(CaseDetailsAction.class).setEnabled(true);
                CallableSystemAction.get(DataSourceSummaryAction.class).setEnabled(true);
                CallableSystemAction.get(CaseDeleteAction.class).setEnabled(FeatureAccessUtils.canDeleteCurrentCase());
                CallableSystemAction.get(OpenTimelineAction.class).setEnabled(true);
                CallableSystemAction.get(OpenCommVisualizationToolAction.class).setEnabled(true);
                CallableSystemAction.get(CommonAttributeSearchAction.class).setEnabled(true);
                CallableSystemAction.get(OpenOutputFolderAction.class).setEnabled(false);
                CallableSystemAction.get(OpenFileDiscoveryAction.class).setEnabled(true);

                /*
                 * Add the case to the recent cases tracker that supplies a list
                 * of recent cases to the recent cases menu item and the
                 * open/create case dialog.
                 */
                RecentCases.getInstance().addRecentCase(newCurrentCase.getDisplayName(), newCurrentCase.getMetadata().getFilePath().toString());

                /*
                 * Open the top components (windows within the main application
                 * window).
                 *
                 * Note: If the core windows are not opened here, they will be
                 * opened via the DirectoryTreeTopComponent 'propertyChange()'
                 * method on a DATA_SOURCE_ADDED event.
                 */
                if (newCurrentCase.hasData()) {
                    CoreComponentControl.openCoreWindows();
                }

                /*
                 * Reset the main window title to:
                 *
                 * [curent case display name] - [application name].
                 */
                mainFrame.setTitle(newCurrentCase.getDisplayName() + " - " + getNameForTitle());
            });
        }
    }

    /*
     * Update the GUI to to reflect the lack of a current case.
     */
    private static void updateGUIForCaseClosed() {
        if (RuntimeProperties.runningWithGUI()) {
            SwingUtilities.invokeLater(() -> {
                /*
                 * Close the top components (windows within the main application
                 * window).
                 */
                CoreComponentControl.closeCoreWindows();

                /*
                 * Disable the case-specific menu items.
                 */
                CallableSystemAction.get(AddImageAction.class).setEnabled(false);
                CallableSystemAction.get(CaseCloseAction.class).setEnabled(false);
                CallableSystemAction.get(CaseDetailsAction.class).setEnabled(false);
                CallableSystemAction.get(DataSourceSummaryAction.class).setEnabled(false);
                CallableSystemAction.get(CaseDeleteAction.class).setEnabled(false);
                CallableSystemAction.get(OpenTimelineAction.class).setEnabled(false);
                CallableSystemAction.get(OpenCommVisualizationToolAction.class).setEnabled(false);
                CallableSystemAction.get(OpenOutputFolderAction.class).setEnabled(false);
                CallableSystemAction.get(CommonAttributeSearchAction.class).setEnabled(false);
                CallableSystemAction.get(OpenFileDiscoveryAction.class).setEnabled(false);

                /*
                 * Clear the notifications in the notfier component in the lower
                 * right hand corner of the main application window.
                 */
                MessageNotifyUtil.Notify.clear();

                /*
                 * Reset the main window title to be just the application name,
                 * instead of [curent case display name] - [application name].
                 */
                mainFrame.setTitle(getNameForTitle());
            });
        }
    }

    private static void clearTempSubDir(String tempSubDirPath) {
        File tempFolder = new File(tempSubDirPath);
        if (tempFolder.isDirectory()) {
            File[] files = tempFolder.listFiles();
            if (files.length > 0) {
                for (File file : files) {
                    if (file.isDirectory()) {
                        FileUtil.deleteDir(file);
                    } else {
                        file.delete();
                    }
                }
            }
        }
    }

    public SleuthkitCase getSleuthkitCase() {
        return this.caseDb;
    }

    public Services getServices() {
        return caseServices;
    }

    public CaseType getCaseType() {
        return metadata.getCaseType();
    }

    public String getCreatedDate() {
        return metadata.getCreatedDate();
    }

    public String getName() {
        return metadata.getCaseName();
    }

    public String getDisplayName() {
        return metadata.getCaseDisplayName();
    }

    public String getNumber() {
        return metadata.getCaseNumber();
    }

    public String getExaminer() {
        return metadata.getExaminer();
    }

    public String getExaminerPhone() {
        return metadata.getExaminerPhone();
    }

    public String getExaminerEmail() {
        return metadata.getExaminerEmail();
    }

    public String getCaseNotes() {
        return metadata.getCaseNotes();
    }

    public String getCaseDirectory() {
        return metadata.getCaseDirectory();
    }

    public String getOutputDirectory() {
        String caseDirectory = getCaseDirectory();
        Path hostPath;
        if (CaseType.MULTI_USER_CASE == metadata.getCaseType()) {
            hostPath = Paths.get(caseDirectory, NetworkUtils.getLocalHostName());
        } else {
            hostPath = Paths.get(caseDirectory);
        }
        if (!hostPath.toFile().exists()) {
            hostPath.toFile().mkdirs();
        }
        return hostPath.toString();
    }

    public String getTempDirectory() {
        return getOrCreateSubdirectory(TEMP_FOLDER);
    }

    public String getCacheDirectory() {
        return getOrCreateSubdirectory(CACHE_FOLDER);
    }

    public String getExportDirectory() {
        return getOrCreateSubdirectory(EXPORT_FOLDER);
    }

    public String getLogDirectoryPath() {
        return getOrCreateSubdirectory(LOG_FOLDER);
    }

    public String getReportDirectory() {
        return getOrCreateSubdirectory(REPORTS_FOLDER);
    }

    public String getConfigDirectory() {
        return getOrCreateSubdirectory(CONFIG_FOLDER);
    }

    public String getModuleDirectory() {
        return getOrCreateSubdirectory(MODULE_FOLDER);
    }

    public String getModuleOutputDirectoryRelativePath() {
        Path path = Paths.get(getModuleDirectory());
        if (getCaseType() == CaseType.MULTI_USER_CASE) {
            return path.subpath(path.getNameCount() - 2, path.getNameCount()).toString();
        } else {
            return path.subpath(path.getNameCount() - 1, path.getNameCount()).toString();
        }
    }

    public List<Content> getDataSources() throws TskCoreException {
        return caseDb.getRootObjects();
    }

    public Set<TimeZone> getTimeZones() {
        Set<TimeZone> timezones = new HashSet<>();
        try {
            for (Content c : getDataSources()) {
                final Content dataSource = c.getDataSource();
                if ((dataSource != null) && (dataSource instanceof Image)) {
                    Image image = (Image) dataSource;
                    timezones.add(TimeZone.getTimeZone(image.getTimeZone()));
                }
            }
        } catch (TskCoreException ex) {
            logger.log(Level.SEVERE, "Error getting data source time zones", ex); //NON-NLS
        }
        return timezones;
    }

    public String getTextIndexName() {
        return getMetadata().getTextIndexName();
    }

    public boolean hasData() {
        boolean hasDataSources = false;
        try {
            hasDataSources = (getDataSources().size() > 0);
        } catch (TskCoreException ex) {
            logger.log(Level.SEVERE, "Error accessing case database", ex); //NON-NLS
        }
        return hasDataSources;
    }

    public void notifyAddingDataSource(UUID eventId) {
        eventPublisher.publish(new AddingDataSourceEvent(eventId));
    }

    public void notifyFailedAddingDataSource(UUID addingDataSourceEventId) {
        eventPublisher.publish(new AddingDataSourceFailedEvent(addingDataSourceEventId));
    }

    public void notifyDataSourceAdded(Content dataSource, UUID addingDataSourceEventId) {
        eventPublisher.publish(new DataSourceAddedEvent(dataSource, addingDataSourceEventId));
    }

    public void notifyDataSourceNameChanged(Content dataSource, String newName) {
        eventPublisher.publish(new DataSourceNameChangedEvent(dataSource, newName));
    }

    public void notifyContentTagAdded(ContentTag newTag) {
        eventPublisher.publish(new ContentTagAddedEvent(newTag));
    }

    public void notifyContentTagDeleted(ContentTag deletedTag) {
        eventPublisher.publish(new ContentTagDeletedEvent(deletedTag));
    }

    public void notifyTagDefinitionChanged(String changedTagName) {
        //leaving new value of changedTagName as null, because we do not currently support changing the display name of a tag. 
        eventPublisher.publish(new AutopsyEvent(Events.TAG_DEFINITION_CHANGED.toString(), changedTagName, null));
    }

    public void notifyCentralRepoCommentChanged(long contentId, String newComment) {
        try {
            eventPublisher.publish(new CommentChangedEvent(contentId, newComment));
        } catch (NoCurrentCaseException ex) {
            logger.log(Level.WARNING, "Unable to send notifcation regarding comment change due to no current case being open", ex);
        }
    }

    public void notifyBlackBoardArtifactTagAdded(BlackboardArtifactTag newTag) {
        eventPublisher.publish(new BlackBoardArtifactTagAddedEvent(newTag));
    }

    public void notifyBlackBoardArtifactTagDeleted(BlackboardArtifactTag deletedTag) {
        eventPublisher.publish(new BlackBoardArtifactTagDeletedEvent(deletedTag));
    }

    public void addReport(String localPath, String srcModuleName, String reportName) throws TskCoreException {
        addReport(localPath, srcModuleName, reportName, null);
    }

    public Report addReport(String localPath, String srcModuleName, String reportName, Content parent) throws TskCoreException {
        String normalizedLocalPath;
        try {
            if (localPath.toLowerCase().contains("http:")) {
                normalizedLocalPath = localPath;
            } else {
                normalizedLocalPath = Paths.get(localPath).normalize().toString();
            }
        } catch (InvalidPathException ex) {
            String errorMsg = "Invalid local path provided: " + localPath; // NON-NLS
            throw new TskCoreException(errorMsg, ex);
        }
        Report report = this.caseDb.addReport(normalizedLocalPath, srcModuleName, reportName, parent);
        eventPublisher.publish(new ReportAddedEvent(report));
        return report;
    }

    public List<Report> getAllReports() throws TskCoreException {
        return this.caseDb.getAllReports();
    }

    public void deleteReports(Collection<? extends Report> reports) throws TskCoreException {
        for (Report report : reports) {
            this.caseDb.deleteReport(report);
            eventPublisher.publish(new AutopsyEvent(Events.REPORT_DELETED.toString(), report, null));
        }
    }

    CaseMetadata getMetadata() {
        return metadata;
    }

    @Messages({
        "Case.exceptionMessage.metadataUpdateError=Failed to update case metadata"
    })
    void updateCaseDetails(CaseDetails caseDetails) throws CaseActionException {
        CaseDetails oldCaseDetails = metadata.getCaseDetails();
        try {
            metadata.setCaseDetails(caseDetails);
        } catch (CaseMetadataException ex) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_metadataUpdateError(), ex);
        }
        if (getCaseType() == CaseType.MULTI_USER_CASE && !oldCaseDetails.getCaseDisplayName().equals(caseDetails.getCaseDisplayName())) {
            try {
                CaseNodeData nodeData = CaseNodeData.readCaseNodeData(metadata.getCaseDirectory());
                nodeData.setDisplayName(caseDetails.getCaseDisplayName());
                CaseNodeData.writeCaseNodeData(nodeData);
            } catch (CaseNodeDataException | InterruptedException ex) {
                throw new CaseActionException(Bundle.Case_exceptionMessage_couldNotUpdateCaseNodeData(ex.getLocalizedMessage()), ex);
            }
        }
        if (!oldCaseDetails.getCaseNumber().equals(caseDetails.getCaseNumber())) {
            eventPublisher.publish(new AutopsyEvent(Events.NUMBER.toString(), oldCaseDetails.getCaseNumber(), caseDetails.getCaseNumber()));
        }
        if (!oldCaseDetails.getExaminerName().equals(caseDetails.getExaminerName())) {
            eventPublisher.publish(new AutopsyEvent(Events.NUMBER.toString(), oldCaseDetails.getExaminerName(), caseDetails.getExaminerName()));
        }
        if (!oldCaseDetails.getCaseDisplayName().equals(caseDetails.getCaseDisplayName())) {
            eventPublisher.publish(new AutopsyEvent(Events.NAME.toString(), oldCaseDetails.getCaseDisplayName(), caseDetails.getCaseDisplayName()));
        }
        eventPublisher.publish(new AutopsyEvent(Events.CASE_DETAILS.toString(), oldCaseDetails, caseDetails));
        if (RuntimeProperties.runningWithGUI()) {
            SwingUtilities.invokeLater(() -> {
                mainFrame.setTitle(caseDetails.getCaseDisplayName() + " - " + getNameForTitle());
                try {
                    RecentCases.getInstance().updateRecentCase(oldCaseDetails.getCaseDisplayName(), metadata.getFilePath().toString(), caseDetails.getCaseDisplayName(), metadata.getFilePath().toString());
                } catch (Exception ex) {
                    logger.log(Level.SEVERE, "Error updating case name in UI", ex); //NON-NLS
                }
            });
        }
    }

    private Case(CaseType caseType, String caseDir, CaseDetails caseDetails) {
        this(new CaseMetadata(caseType, caseDir, displayNameToUniqueName(caseDetails.getCaseDisplayName()), caseDetails));
    }

    private Case(CaseMetadata caseMetaData) {
        metadata = caseMetaData;
        sleuthkitEventListener = new SleuthkitEventListener();
    }

    @Messages({
        "Case.progressIndicatorCancelButton.label=Cancel",
        "Case.progressMessage.preparing=Preparing...",
        "Case.progressMessage.cancelling=Cancelling...",
        "Case.exceptionMessage.cancelled=Cancelled.",
        "# {0} - exception message", "Case.exceptionMessage.execExceptionWrapperMessage={0}"
    })
    private void doOpenCaseAction(String progressIndicatorTitle, CaseAction<ProgressIndicator, Object, Void> caseAction, CaseLockType caseLockType, boolean allowCancellation, Object additionalParams) throws CaseActionException {
        /*
         * Create and start either a GUI progress indicator (with or without a
         * cancel button) or a logging progress indicator.
         */
        CancelButtonListener cancelButtonListener = null;
        ProgressIndicator progressIndicator;
        if (RuntimeProperties.runningWithGUI()) {
            if (allowCancellation) {
                cancelButtonListener = new CancelButtonListener(Bundle.Case_progressMessage_cancelling());
                progressIndicator = new ModalDialogProgressIndicator(
                        mainFrame,
                        progressIndicatorTitle,
                        new String[]{Bundle.Case_progressIndicatorCancelButton_label()},
                        Bundle.Case_progressIndicatorCancelButton_label(),
                        cancelButtonListener);
            } else {
                progressIndicator = new ModalDialogProgressIndicator(
                        mainFrame,
                        progressIndicatorTitle);
            }
        } else {
            progressIndicator = new LoggingProgressIndicator();
        }
        progressIndicator.start(Bundle.Case_progressMessage_preparing());

        /*
         * Do the case action in the single thread in the case action executor.
         * If the case is a multi-user case, a case lock is acquired and held
         * until explictly released and an exclusive case resources lock is
         * aquired and held for the duration of the action.
         */
        TaskThreadFactory threadFactory = new TaskThreadFactory(String.format(CASE_ACTION_THREAD_NAME, metadata.getCaseName()));
        caseActionExecutor = Executors.newSingleThreadExecutor(threadFactory);
        Future<Void> future = caseActionExecutor.submit(() -> {
            if (CaseType.SINGLE_USER_CASE == metadata.getCaseType()) {
                caseAction.execute(progressIndicator, additionalParams);
            } else {
                acquireCaseLock(caseLockType);
                try (CoordinationService.Lock resourcesLock = acquireCaseResourcesLock(metadata.getCaseDirectory())) {
                    if (null == resourcesLock) {
                        throw new CaseActionException(Bundle.Case_creationException_couldNotAcquireResourcesLock());
                    }
                    caseAction.execute(progressIndicator, additionalParams);
                } catch (CaseActionException ex) {
                    releaseCaseLock();
                    throw ex;
                }
            }
            return null;
        });
        if (null != cancelButtonListener) {
            cancelButtonListener.setCaseActionFuture(future);
        }

        /*
         * Wait for the case action task to finish.
         */
        try {
            future.get();
        } catch (InterruptedException discarded) {
            /*
             * The thread this method is running in has been interrupted.
             */
            if (null != cancelButtonListener) {
                cancelButtonListener.actionPerformed(null);
            } else {
                future.cancel(true);
            }
            ThreadUtils.shutDownTaskExecutor(caseActionExecutor);
        } catch (CancellationException discarded) {
            /*
             * The case action has been cancelled.
             */
            ThreadUtils.shutDownTaskExecutor(caseActionExecutor);
            throw new CaseActionCancelledException(Bundle.Case_exceptionMessage_cancelled());
        } catch (ExecutionException ex) {
            /*
             * The case action has thrown an exception.
             */
            ThreadUtils.shutDownTaskExecutor(caseActionExecutor);
            throw new CaseActionException(Bundle.Case_exceptionMessage_execExceptionWrapperMessage(ex.getCause().getLocalizedMessage()), ex);
        } finally {
            progressIndicator.finish();
        }
    }

    private Void create(ProgressIndicator progressIndicator, Object additionalParams) throws CaseActionException {
        assert (additionalParams == null);
        try {
            checkForCancellation();
            createCaseDirectoryIfDoesNotExist(progressIndicator);
            checkForCancellation();
            switchLoggingToCaseLogsDirectory(progressIndicator);
            checkForCancellation();
            saveCaseMetadataToFile(progressIndicator);
            checkForCancellation();
            createCaseNodeData(progressIndicator);
            checkForCancellation();
            checkForCancellation();
            createCaseDatabase(progressIndicator);
            checkForCancellation();
            openCaseLevelServices(progressIndicator);
            checkForCancellation();
            openAppServiceCaseResources(progressIndicator);
            checkForCancellation();
            openCommunicationChannels(progressIndicator);
            return null;

        } catch (CaseActionException ex) {
            /*
             * Cancellation or failure. The sleep is a little hack to clear the
             * interrupted flag for this thread if this is a cancellation
             * scenario, so that the clean up can run to completion in the
             * current thread.
             */
            try {
                Thread.sleep(1);
            } catch (InterruptedException discarded) {
            }
            close(progressIndicator);
            throw ex;
        }
    }

    private Void open(ProgressIndicator progressIndicator, Object additionalParams) throws CaseActionException {
        assert (additionalParams == null);
        try {
            checkForCancellation();
            switchLoggingToCaseLogsDirectory(progressIndicator);
            checkForCancellation();
            updateCaseNodeData(progressIndicator);
            checkForCancellation();
            deleteTempfilesFromCaseDirectory(progressIndicator);
            checkForCancellation();
            openCaseDataBase(progressIndicator);
            checkForCancellation();
            openCaseLevelServices(progressIndicator);
            checkForCancellation();
            openAppServiceCaseResources(progressIndicator);
            checkForCancellation();
            openCommunicationChannels(progressIndicator);
            return null;

        } catch (CaseActionException ex) {
            /*
             * Cancellation or failure. The sleep is a little hack to clear the
             * interrupted flag for this thread if this is a cancellation
             * scenario, so that the clean up can run to completion in the
             * current thread.
             */
            try {
                Thread.sleep(1);
            } catch (InterruptedException discarded) {
            }
            close(progressIndicator);
            throw ex;
        }
    }

    @Messages({
        "Case.progressMessage.deletingDataSource=Removing the data source from the case...",
        "Case.exceptionMessage.dataSourceNotFound=The data source was not found.",
        "Case.exceptionMessage.errorDeletingDataSourceFromCaseDb=An error occurred while removing the data source from the case database.",
        "Case.exceptionMessage.errorDeletingDataSourceFromTextIndex=An error occurred while removing the data source from the text index.",})
    Void deleteDataSource(ProgressIndicator progressIndicator, Object additionalParams) throws CaseActionException {
        assert (additionalParams instanceof Long);
        open(progressIndicator, null);
        try {
            progressIndicator.progress(Bundle.Case_progressMessage_deletingDataSource());
            Long dataSourceObjectID = (Long) additionalParams;
            try {
                DataSource dataSource = this.caseDb.getDataSource(dataSourceObjectID);
                if (dataSource == null) {
                    throw new CaseActionException(Bundle.Case_exceptionMessage_dataSourceNotFound());
                }
                SleuthkitCaseAdminUtil.deleteDataSource(this.caseDb, dataSourceObjectID);
            } catch (TskDataException | TskCoreException ex) {
                throw new CaseActionException(Bundle.Case_exceptionMessage_errorDeletingDataSourceFromCaseDb(), ex);
            }
            try {
                this.caseServices.getKeywordSearchService().deleteDataSource(dataSourceObjectID);
            } catch (KeywordSearchServiceException ex) {
                throw new CaseActionException(Bundle.Case_exceptionMessage_errorDeletingDataSourceFromTextIndex(), ex);
            }
            eventPublisher.publish(new DataSourceDeletedEvent(dataSourceObjectID));
            return null;
        } finally {
            close(progressIndicator);
            releaseCaseLock();
        }
    }

    public SleuthkitCase createPortableCase(String caseName, File portableCaseFolder) throws TskCoreException {

        if (portableCaseFolder.exists()) {
            throw new TskCoreException("Portable case folder " + portableCaseFolder.toString() + " already exists");
        }
        if (!portableCaseFolder.mkdirs()) {
            throw new TskCoreException("Error creating portable case folder " + portableCaseFolder.toString());
        }

        CaseDetails details = new CaseDetails(caseName, getNumber(), getExaminer(),
                getExaminerPhone(), getExaminerEmail(), getCaseNotes());
        try {
            CaseMetadata portableCaseMetadata = new CaseMetadata(Case.CaseType.SINGLE_USER_CASE, portableCaseFolder.toString(),
                    caseName, details, metadata);
            portableCaseMetadata.setCaseDatabaseName(SINGLE_USER_CASE_DB_NAME);
        } catch (CaseMetadataException ex) {
            throw new TskCoreException("Error creating case metadata", ex);
        }

        // Create the Sleuthkit case
        SleuthkitCase portableSleuthkitCase;
        String dbFilePath = Paths.get(portableCaseFolder.toString(), SINGLE_USER_CASE_DB_NAME).toString();
        portableSleuthkitCase = SleuthkitCase.newCase(dbFilePath);

        return portableSleuthkitCase;
    }

    private static void checkForCancellation() throws CaseActionCancelledException {
        if (Thread.currentThread().isInterrupted()) {
            throw new CaseActionCancelledException(Bundle.Case_exceptionMessage_cancelled());
        }
    }

    @Messages({
        "Case.progressMessage.creatingCaseDirectory=Creating case directory..."
    })
    private void createCaseDirectoryIfDoesNotExist(ProgressIndicator progressIndicator) throws CaseActionException {
        /*
         * TODO (JIRA-2180): Always create the case directory as part of the
         * case creation process.
         */
        progressIndicator.progress(Bundle.Case_progressMessage_creatingCaseDirectory());
        if (new File(metadata.getCaseDirectory()).exists() == false) {
            progressIndicator.progress(Bundle.Case_progressMessage_creatingCaseDirectory());
            Case.createCaseDirectory(metadata.getCaseDirectory(), metadata.getCaseType());
        }
    }

    @Messages({
        "Case.progressMessage.switchingLogDirectory=Switching log directory..."
    })
    private void switchLoggingToCaseLogsDirectory(ProgressIndicator progressIndicator) {
        progressIndicator.progress(Bundle.Case_progressMessage_switchingLogDirectory());
        Logger.setLogDirectory(getLogDirectoryPath());
    }

    @Messages({
        "Case.progressMessage.savingCaseMetadata=Saving case metadata to file...",
        "# {0} - exception message", "Case.exceptionMessage.couldNotSaveCaseMetadata=Failed to save case metadata:\n{0}."
    })
    private void saveCaseMetadataToFile(ProgressIndicator progressIndicator) throws CaseActionException {
        progressIndicator.progress(Bundle.Case_progressMessage_savingCaseMetadata());
        try {
            this.metadata.writeToFile();
        } catch (CaseMetadataException ex) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_couldNotSaveCaseMetadata(ex.getLocalizedMessage()), ex);
        }
    }

    @Messages({
        "Case.progressMessage.creatingCaseNodeData=Creating coordination service node data...",
        "# {0} - exception message", "Case.exceptionMessage.couldNotCreateCaseNodeData=Failed to create coordination service node data:\n{0}."
    })
    private void createCaseNodeData(ProgressIndicator progressIndicator) throws CaseActionException {
        if (getCaseType() == CaseType.MULTI_USER_CASE) {
            progressIndicator.progress(Bundle.Case_progressMessage_creatingCaseNodeData());
            try {
                CaseNodeData.createCaseNodeData(metadata);
            } catch (CaseNodeDataException | InterruptedException ex) {
                throw new CaseActionException(Bundle.Case_exceptionMessage_couldNotCreateCaseNodeData(ex.getLocalizedMessage()), ex);
            }
        }
    }

    @Messages({
        "Case.progressMessage.updatingCaseNodeData=Updating coordination service node data...",
        "# {0} - exception message", "Case.exceptionMessage.couldNotUpdateCaseNodeData=Failed to update coordination service node data:\n{0}."
    })
    private void updateCaseNodeData(ProgressIndicator progressIndicator) throws CaseActionException {
        if (getCaseType() == CaseType.MULTI_USER_CASE) {
            progressIndicator.progress(Bundle.Case_progressMessage_updatingCaseNodeData());
            try {
                CaseNodeData nodeData = CaseNodeData.readCaseNodeData(metadata.getCaseDirectory());
                nodeData.setLastAccessDate(new Date());
                CaseNodeData.writeCaseNodeData(nodeData);
            } catch (CaseNodeDataException | InterruptedException ex) {
                throw new CaseActionException(Bundle.Case_exceptionMessage_couldNotUpdateCaseNodeData(ex.getLocalizedMessage()), ex);
            }
        }
    }

    @Messages({
        "Case.progressMessage.clearingTempDirectory=Clearing case temp directory..."
    })
    private void deleteTempfilesFromCaseDirectory(ProgressIndicator progressIndicator) {
        /*
         * Clear the temp subdirectory of the case directory.
         */
        progressIndicator.progress(Bundle.Case_progressMessage_clearingTempDirectory());
        Case.clearTempSubDir(this.getTempDirectory());
    }

    @Messages({
        "Case.progressMessage.creatingCaseDatabase=Creating case database...",
        "# {0} - exception message", "Case.exceptionMessage.couldNotGetDbServerConnectionInfo=Failed to get case database server conneciton info:\n{0}.",
        "# {0} - exception message", "Case.exceptionMessage.couldNotCreateCaseDatabase=Failed to create case database:\n{0}.",
        "# {0} - exception message", "Case.exceptionMessage.couldNotSaveDbNameToMetadataFile=Failed to save case database name to case metadata file:\n{0}."
    })
    private void createCaseDatabase(ProgressIndicator progressIndicator) throws CaseActionException {
        progressIndicator.progress(Bundle.Case_progressMessage_creatingCaseDatabase());
        try {
            if (CaseType.SINGLE_USER_CASE == metadata.getCaseType()) {
                /*
                 * For single-user cases, the case database is a SQLite database
                 * with a standard name, physically located in the case
                 * directory.
                 */
                caseDb = SleuthkitCase.newCase(Paths.get(metadata.getCaseDirectory(), SINGLE_USER_CASE_DB_NAME).toString());
                metadata.setCaseDatabaseName(SINGLE_USER_CASE_DB_NAME);
            } else {
                /*
                 * For multi-user cases, the case database is a PostgreSQL
                 * database with a name derived from the case display name,
                 * physically located on the PostgreSQL database server.
                 */
                caseDb = SleuthkitCase.newCase(metadata.getCaseDisplayName(), UserPreferences.getDatabaseConnectionInfo(), metadata.getCaseDirectory());
                metadata.setCaseDatabaseName(caseDb.getDatabaseName());
            }
        } catch (TskCoreException ex) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_couldNotCreateCaseDatabase(ex.getLocalizedMessage()), ex);
        } catch (UserPreferencesException ex) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_couldNotGetDbServerConnectionInfo(ex.getLocalizedMessage()), ex);
        } catch (CaseMetadataException ex) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_couldNotSaveDbNameToMetadataFile(ex.getLocalizedMessage()), ex);
        }
    }

    @Messages({
        "Case.progressMessage.openingCaseDatabase=Opening case database...",
        "# {0} - exception message", "Case.exceptionMessage.couldNotOpenCaseDatabase=Failed to open case database:\n{0}.",
        "# {0} - exception message", "Case.exceptionMessage.unsupportedSchemaVersionMessage=Unsupported case database schema version:\n{0}.",
        "Case.open.exception.multiUserCaseNotEnabled=Cannot open a multi-user case if multi-user cases are not enabled. See Tools, Options, Multi-User."
    })
    private void openCaseDataBase(ProgressIndicator progressIndicator) throws CaseActionException {
        progressIndicator.progress(Bundle.Case_progressMessage_openingCaseDatabase());
        try {
            String databaseName = metadata.getCaseDatabaseName();
            if (CaseType.SINGLE_USER_CASE == metadata.getCaseType()) {
                caseDb = SleuthkitCase.openCase(Paths.get(metadata.getCaseDirectory(), databaseName).toString());
            } else if (UserPreferences.getIsMultiUserModeEnabled()) {
                caseDb = SleuthkitCase.openCase(databaseName, UserPreferences.getDatabaseConnectionInfo(), metadata.getCaseDirectory());
            } else {
                throw new CaseActionException(Bundle.Case_open_exception_multiUserCaseNotEnabled());
            }
        } catch (TskUnsupportedSchemaVersionException ex) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_unsupportedSchemaVersionMessage(ex.getLocalizedMessage()), ex);
        } catch (UserPreferencesException ex) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_couldNotGetDbServerConnectionInfo(ex.getLocalizedMessage()), ex);
        } catch (TskCoreException ex) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_couldNotOpenCaseDatabase(ex.getLocalizedMessage()), ex);
        }
    }

    @Messages({
        "Case.progressMessage.openingCaseLevelServices=Opening case-level services...",})
    private void openCaseLevelServices(ProgressIndicator progressIndicator) {
        progressIndicator.progress(Bundle.Case_progressMessage_openingCaseLevelServices());
        this.caseServices = new Services(caseDb);
        /*
         * RC Note: JM put this initialization here. I'm not sure why. However,
         * my attempt to put it in the openCaseDatabase method seems to lead to
         * intermittent unchecked exceptions concerning a missing subscriber.
         */
        caseDb.registerForEvents(sleuthkitEventListener);
    }

    @NbBundle.Messages({
        "Case.progressMessage.openingApplicationServiceResources=Opening application service case resources...",
        "# {0} - service name", "Case.serviceOpenCaseResourcesProgressIndicator.title={0} Opening Case Resources",
        "# {0} - service name", "Case.serviceOpenCaseResourcesProgressIndicator.cancellingMessage=Cancelling opening case resources by {0}...",
        "# {0} - service name", "Case.servicesException.notificationTitle={0} Error"
    })
    private void openAppServiceCaseResources(ProgressIndicator progressIndicator) throws CaseActionException {
        /*
         * Each service gets its own independently cancellable/interruptible
         * task, running in a named thread managed by an executor service, with
         * its own progress indicator. This allows for cancellation of the
         * opening of case resources for individual services. It also makes it
         * possible to ensure that each service task completes before the next
         * one starts by awaiting termination of the executor service.
         */
        progressIndicator.progress(Bundle.Case_progressMessage_openingApplicationServiceResources());

        for (AutopsyService service : Lookup.getDefault().lookupAll(AutopsyService.class
        )) {
            /*
             * Create a progress indicator for the task and start the task. If
             * running with a GUI, the progress indicator will be a dialog box
             * with a Cancel button.
             */
            CancelButtonListener cancelButtonListener = null;
            ProgressIndicator appServiceProgressIndicator;
            if (RuntimeProperties.runningWithGUI()) {
                cancelButtonListener = new CancelButtonListener(Bundle.Case_serviceOpenCaseResourcesProgressIndicator_cancellingMessage(service.getServiceName()));
                appServiceProgressIndicator = new ModalDialogProgressIndicator(
                        mainFrame,
                        Bundle.Case_serviceOpenCaseResourcesProgressIndicator_title(service.getServiceName()),
                        new String[]{Bundle.Case_progressIndicatorCancelButton_label()},
                        Bundle.Case_progressIndicatorCancelButton_label(),
                        cancelButtonListener);
            } else {
                appServiceProgressIndicator = new LoggingProgressIndicator();
            }
            appServiceProgressIndicator.start(Bundle.Case_progressMessage_preparing());
            AutopsyService.CaseContext context = new AutopsyService.CaseContext(this, appServiceProgressIndicator);
            String threadNameSuffix = service.getServiceName().replaceAll("[ ]", "-"); //NON-NLS
            threadNameSuffix = threadNameSuffix.toLowerCase();
            TaskThreadFactory threadFactory = new TaskThreadFactory(String.format(CASE_RESOURCES_THREAD_NAME, threadNameSuffix));
            ExecutorService executor = Executors.newSingleThreadExecutor(threadFactory);
            Future<Void> future = executor.submit(() -> {
                service.openCaseResources(context);
                return null;
            });
            if (null != cancelButtonListener) {
                cancelButtonListener.setCaseContext(context);
                cancelButtonListener.setCaseActionFuture(future);
            }

            /*
             * Wait for the task to either be completed or
             * cancelled/interrupted, or for the opening of the case to be
             * cancelled.
             */
            try {
                future.get();
            } catch (InterruptedException discarded) {
                /*
                 * The parent create/open case task has been cancelled.
                 */
                Case.logger.log(Level.WARNING, String.format("Opening of %s (%s) in %s cancelled during opening of case resources by %s", getDisplayName(), getName(), getCaseDirectory(), service.getServiceName()));
                future.cancel(true);
            } catch (CancellationException discarded) {
                /*
                 * The opening of case resources by the application service has
                 * been cancelled, so the executor service has thrown. Note that
                 * there is no guarantee the task itself has responded to the
                 * cancellation request yet.
                 */
                Case.logger.log(Level.WARNING, String.format("Opening of case resources by %s for %s (%s) in %s cancelled", service.getServiceName(), getDisplayName(), getName(), getCaseDirectory(), service.getServiceName()));
            } catch (ExecutionException ex) {
                /*
                 * An exception was thrown while executing the task. The
                 * case-specific application service resources are not
                 * essential. Log an error and notify the user if running the
                 * desktop GUI, but do not throw.
                 */
                Case.logger.log(Level.SEVERE, String.format("%s failed to open case resources for %s", service.getServiceName(), this.getDisplayName()), ex);
                if (RuntimeProperties.runningWithGUI()) {
                    SwingUtilities.invokeLater(() -> {
                        MessageNotifyUtil.Notify.error(Bundle.Case_servicesException_notificationTitle(service.getServiceName()), ex.getLocalizedMessage());
                    });
                }
            } finally {
                /*
                 * Shut down the executor service and wait for it to finish.
                 * This ensures that the task has finished. Without this, it
                 * would be possible to start the next task before the current
                 * task responded to a cancellation request.
                 */
                ThreadUtils.shutDownTaskExecutor(executor);
                appServiceProgressIndicator.finish();
            }
            checkForCancellation();
        }
    }

    @Messages({
        "Case.progressMessage.settingUpNetworkCommunications=Setting up network communications...",
        "# {0} - exception message", "Case.exceptionMessage.couldNotOpenRemoteEventChannel=Failed to open remote events channel:\n{0}.",
        "# {0} - exception message", "Case.exceptionMessage.couldNotCreatCollaborationMonitor=Failed to create collaboration monitor:\n{0}."
    })
    private void openCommunicationChannels(ProgressIndicator progressIndicator) throws CaseActionException {
        if (CaseType.MULTI_USER_CASE == metadata.getCaseType()) {
            progressIndicator.progress(Bundle.Case_progressMessage_settingUpNetworkCommunications());
            try {
                eventPublisher.openRemoteEventChannel(String.format(EVENT_CHANNEL_NAME, metadata.getCaseName()));
                checkForCancellation();
                collaborationMonitor = new CollaborationMonitor(metadata.getCaseName());
            } catch (AutopsyEventException ex) {
                throw new CaseActionException(Bundle.Case_exceptionMessage_couldNotOpenRemoteEventChannel(ex.getLocalizedMessage()), ex);
            } catch (CollaborationMonitor.CollaborationMonitorException ex) {
                throw new CaseActionException(Bundle.Case_exceptionMessage_couldNotCreatCollaborationMonitor(ex.getLocalizedMessage()), ex);
            }
        }
    }

    private void doCloseCaseAction() throws CaseActionException {
        /*
         * Set up either a GUI progress indicator without a Cancel button or a
         * logging progress indicator.
         */
        ProgressIndicator progressIndicator;
        if (RuntimeProperties.runningWithGUI()) {
            progressIndicator = new ModalDialogProgressIndicator(
                    mainFrame,
                    Bundle.Case_progressIndicatorTitle_closingCase());
        } else {
            progressIndicator = new LoggingProgressIndicator();
        }
        progressIndicator.start(Bundle.Case_progressMessage_preparing());

        /*
         * Closing a case is always done in the same non-UI thread that
         * opened/created the case. If the case is a multi-user case, this
         * ensures that case lock that is held as long as the case is open is
         * released in the same thread in which it was acquired, as is required
         * by the coordination service.
         */
        Future<Void> future = caseActionExecutor.submit(() -> {
            if (CaseType.SINGLE_USER_CASE == metadata.getCaseType()) {
                close(progressIndicator);
            } else {
                /*
                 * Acquire an exclusive case resources lock to ensure only one
                 * node at a time can create/open/upgrade/close the case
                 * resources.
                 */
                progressIndicator.progress(Bundle.Case_progressMessage_preparing());
                try (CoordinationService.Lock resourcesLock = acquireCaseResourcesLock(metadata.getCaseDirectory())) {
                    if (null == resourcesLock) {
                        throw new CaseActionException(Bundle.Case_creationException_couldNotAcquireResourcesLock());
                    }
                    close(progressIndicator);
                } finally {
                    /*
                     * Always release the case directory lock that was acquired
                     * when the case was opened.
                     */
                    releaseCaseLock();
                }
            }
            return null;
        });

        try {
            future.get();
        } catch (InterruptedException | CancellationException unused) {
            /*
             * The wait has been interrupted by interrupting the thread running
             * this method. Not allowing cancellation of case closing, so ignore
             * the interrupt. Likewise, cancellation of the case closing task is
             * not supported.
             */
        } catch (ExecutionException ex) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_execExceptionWrapperMessage(ex.getCause().getMessage()), ex);
        } finally {
            ThreadUtils.shutDownTaskExecutor(caseActionExecutor);
            progressIndicator.finish();
        }
    }

    @Messages({
        "Case.progressMessage.shuttingDownNetworkCommunications=Shutting down network communications...",
        "Case.progressMessage.closingApplicationServiceResources=Closing case-specific application service resources...",
        "Case.progressMessage.closingCaseDatabase=Closing case database..."
    })
    private void close(ProgressIndicator progressIndicator) {
        IngestManager.getInstance().cancelAllIngestJobs(IngestJob.CancellationReason.CASE_CLOSED);

        /*
         * Stop sending/receiving case events to and from other nodes if this is
         * a multi-user case.
         */
        if (CaseType.MULTI_USER_CASE == metadata.getCaseType()) {
            progressIndicator.progress(Bundle.Case_progressMessage_shuttingDownNetworkCommunications());
            if (null != collaborationMonitor) {
                collaborationMonitor.shutdown();
            }
            eventPublisher.closeRemoteEventChannel();
        }

        /*
         * Allow all registered application services providers to close
         * resources related to the case.
         */
        progressIndicator.progress(Bundle.Case_progressMessage_closingApplicationServiceResources());
        closeAppServiceCaseResources();

        /*
         * Close the case database.
         */
        if (null != caseDb) {
            progressIndicator.progress(Bundle.Case_progressMessage_closingCaseDatabase());
            caseDb.unregisterForEvents(sleuthkitEventListener);
            caseDb.close();
        }

        /*
         * Switch the log directory.
         */
        progressIndicator.progress(Bundle.Case_progressMessage_switchingLogDirectory());
        Logger.setLogDirectory(PlatformUtil.getLogDirectory());
    }

    @Messages({
        "# {0} - serviceName", "Case.serviceCloseResourcesProgressIndicator.title={0} Closing Case Resources",
        "# {0} - service name", "# {1} - exception message", "Case.servicesException.serviceResourcesCloseError=Could not close case resources for {0} service: {1}"
    })
    private void closeAppServiceCaseResources() {
        /*
         * Each service gets its own independently cancellable task, and thus
         * its own task progress indicator.
         */
        for (AutopsyService service : Lookup.getDefault().lookupAll(AutopsyService.class
        )) {
            ProgressIndicator progressIndicator;
            if (RuntimeProperties.runningWithGUI()) {
                progressIndicator = new ModalDialogProgressIndicator(
                        mainFrame,
                        Bundle.Case_serviceCloseResourcesProgressIndicator_title(service.getServiceName()));
            } else {
                progressIndicator = new LoggingProgressIndicator();
            }
            progressIndicator.start(Bundle.Case_progressMessage_preparing());
            AutopsyService.CaseContext context = new AutopsyService.CaseContext(this, progressIndicator);
            String threadNameSuffix = service.getServiceName().replaceAll("[ ]", "-"); //NON-NLS
            threadNameSuffix = threadNameSuffix.toLowerCase();
            TaskThreadFactory threadFactory = new TaskThreadFactory(String.format(CASE_RESOURCES_THREAD_NAME, threadNameSuffix));
            ExecutorService executor = Executors.newSingleThreadExecutor(threadFactory);
            Future<Void> future = executor.submit(() -> {
                service.closeCaseResources(context);
                return null;
            });
            try {
                future.get();
            } catch (InterruptedException ex) {
                Case.logger.log(Level.SEVERE, String.format("Unexpected interrupt while waiting on %s service to close case resources", service.getServiceName()), ex);
            } catch (CancellationException ex) {
                Case.logger.log(Level.SEVERE, String.format("Unexpected cancellation while waiting on %s service to close case resources", service.getServiceName()), ex);
            } catch (ExecutionException ex) {
                Case.logger.log(Level.SEVERE, String.format("%s service failed to open case resources", service.getServiceName()), ex);
                if (RuntimeProperties.runningWithGUI()) {
                    SwingUtilities.invokeLater(() -> MessageNotifyUtil.Notify.error(
                            Bundle.Case_servicesException_notificationTitle(service.getServiceName()),
                            Bundle.Case_servicesException_serviceResourcesCloseError(service.getServiceName(), ex.getLocalizedMessage())));
                }
            } finally {
                ThreadUtils.shutDownTaskExecutor(executor);
                progressIndicator.finish();
            }
        }
    }

    @Messages({
        "Case.lockingException.couldNotAcquireSharedLock=Failed to get an shared lock on the case.",
        "Case.lockingException.couldNotAcquireExclusiveLock=Failed to get a exclusive lock on the case."
    })
    private void acquireCaseLock(CaseLockType lockType) throws CaseActionException {
        String caseDir = metadata.getCaseDirectory();
        try {
            CoordinationService coordinationService = CoordinationService.getInstance();
            caseLock = lockType == CaseLockType.SHARED
                    ? coordinationService.tryGetSharedLock(CategoryNode.CASES, caseDir, CASE_LOCK_TIMEOUT_MINS, TimeUnit.MINUTES)
                    : coordinationService.tryGetExclusiveLock(CategoryNode.CASES, caseDir, CASE_LOCK_TIMEOUT_MINS, TimeUnit.MINUTES);
            if (caseLock == null) {
                if (lockType == CaseLockType.SHARED) {
                    throw new CaseActionException(Bundle.Case_lockingException_couldNotAcquireSharedLock());
                } else {
                    throw new CaseActionException(Bundle.Case_lockingException_couldNotAcquireExclusiveLock());
                }
            }
        } catch (InterruptedException | CoordinationServiceException ex) {
            if (lockType == CaseLockType.SHARED) {
                throw new CaseActionException(Bundle.Case_lockingException_couldNotAcquireSharedLock(), ex);
            } else {
                throw new CaseActionException(Bundle.Case_lockingException_couldNotAcquireExclusiveLock(), ex);
            }
        }
    }

    private void releaseCaseLock() {
        if (caseLock != null) {
            try {
                caseLock.release();
                caseLock = null;
            } catch (CoordinationService.CoordinationServiceException ex) {
                logger.log(Level.SEVERE, String.format("Failed to release shared case directory lock for %s", getMetadata().getCaseDirectory()), ex);
            }
        }
    }

    private String getOrCreateSubdirectory(String subDirectoryName) {
        File subDirectory = Paths.get(getOutputDirectory(), subDirectoryName).toFile();
        if (!subDirectory.exists()) {
            subDirectory.mkdirs();
        }
        return subDirectory.toString();

    }

    @Messages({
        "Case.exceptionMessage.errorsDeletingCase=Errors occured while deleting the case. See the application log for details."
    })
    private static void deleteSingleUserCase(CaseMetadata metadata, ProgressIndicator progressIndicator) throws CaseActionException {
        boolean errorsOccurred = false;
        try {
            deleteTextIndex(metadata, progressIndicator);
        } catch (KeywordSearchServiceException ex) {
            errorsOccurred = true;
            logger.log(Level.WARNING, String.format("Failed to delete text index for %s (%s) in %s", metadata.getCaseDisplayName(), metadata.getCaseName(), metadata.getCaseDirectory()), ex); //NON-NLS
        }

        try {
            deleteCaseDirectory(metadata, progressIndicator);
        } catch (CaseActionException ex) {
            errorsOccurred = true;
            logger.log(Level.WARNING, String.format("Failed to delete case directory for %s (%s) in %s", metadata.getCaseDisplayName(), metadata.getCaseName(), metadata.getCaseDirectory()), ex); //NON-NLS
        }

        deleteFromRecentCases(metadata, progressIndicator);

        if (errorsOccurred) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_errorsDeletingCase());
        }
    }

    @Messages({
        "Case.progressMessage.connectingToCoordSvc=Connecting to coordination service...",
        "# {0} - exception message", "Case.exceptionMessage.failedToConnectToCoordSvc=Failed to connect to coordination service:\n{0}.",
        "Case.exceptionMessage.cannotGetLockToDeleteCase=Cannot delete case because it is open for another user or host.",
        "# {0} - exception message", "Case.exceptionMessage.failedToLockCaseForDeletion=Failed to exclusively lock case for deletion:\n{0}.",
        "Case.progressMessage.fetchingCoordSvcNodeData=Fetching coordination service node data for the case...",
        "# {0} - exception message", "Case.exceptionMessage.failedToFetchCoordSvcNodeData=Failed to fetch coordination service node data:\n{0}.",
        "Case.progressMessage.deletingResourcesCoordSvcNode=Deleting case resources coordination service node...",
        "Case.progressMessage.deletingCaseDirCoordSvcNode=Deleting case directory coordination service node..."
    })
    private static void deleteMultiUserCase(CaseMetadata metadata, ProgressIndicator progressIndicator) throws CaseActionException, InterruptedException {
        progressIndicator.progress(Bundle.Case_progressMessage_connectingToCoordSvc());
        CoordinationService coordinationService;
        try {
            coordinationService = CoordinationService.getInstance();
        } catch (CoordinationServiceException ex) {
            logger.log(Level.SEVERE, String.format("Failed to connect to coordination service when attempting to delete %s (%s) in %s", metadata.getCaseDisplayName(), metadata.getCaseName(), metadata.getCaseDirectory()), ex); //NON-NLS
            throw new CaseActionException(Bundle.Case_exceptionMessage_failedToConnectToCoordSvc(ex.getLocalizedMessage()));
        }

        CaseNodeData caseNodeData;
        boolean errorsOccurred = false;
        try (CoordinationService.Lock dirLock = coordinationService.tryGetExclusiveLock(CategoryNode.CASES, metadata.getCaseDirectory())) {
            if (dirLock == null) {
                logger.log(Level.INFO, String.format("Could not delete %s (%s) in %s because a case directory lock was held by another host", metadata.getCaseDisplayName(), metadata.getCaseName(), metadata.getCaseDirectory())); //NON-NLS
                throw new CaseActionException(Bundle.Case_exceptionMessage_cannotGetLockToDeleteCase());
            }

            progressIndicator.progress(Bundle.Case_progressMessage_fetchingCoordSvcNodeData());
            try {
                caseNodeData = CaseNodeData.readCaseNodeData(metadata.getCaseDirectory());
            } catch (CaseNodeDataException | InterruptedException ex) {
                logger.log(Level.SEVERE, String.format("Failed to get coordination service node data %s (%s) in %s", metadata.getCaseDisplayName(), metadata.getCaseName(), metadata.getCaseDirectory()), ex); //NON-NLS
                throw new CaseActionException(Bundle.Case_exceptionMessage_failedToFetchCoordSvcNodeData(ex.getLocalizedMessage()));
            }

            errorsOccurred = deleteMultiUserCase(caseNodeData, metadata, progressIndicator, logger);

            progressIndicator.progress(Bundle.Case_progressMessage_deletingResourcesCoordSvcNode());
            try {
                String resourcesLockNodePath = CoordinationServiceUtils.getCaseResourcesNodePath(caseNodeData.getDirectory());
                coordinationService.deleteNode(CategoryNode.CASES, resourcesLockNodePath);
            } catch (CoordinationServiceException ex) {
                if (!isNoNodeException(ex)) {
                    errorsOccurred = true;
                    logger.log(Level.WARNING, String.format("Error deleting the case resources coordination service node for the case at %s (%s) in %s", metadata.getCaseDisplayName(), metadata.getCaseName(), metadata.getCaseDirectory()), ex); //NON-NLS
                }
            } catch (InterruptedException ex) {
                logger.log(Level.WARNING, String.format("Error deleting the case resources coordination service node for the case at %s (%s) in %s", metadata.getCaseDisplayName(), metadata.getCaseName(), metadata.getCaseDirectory()), ex); //NON-NLS
            }

        } catch (CoordinationServiceException ex) {
            logger.log(Level.SEVERE, String.format("Error exclusively locking the case directory for %s (%s) in %s", metadata.getCaseDisplayName(), metadata.getCaseName(), metadata.getCaseDirectory()), ex); //NON-NLS
            throw new CaseActionException(Bundle.Case_exceptionMessage_failedToLockCaseForDeletion(ex.getLocalizedMessage()));
        }

        if (!errorsOccurred) {
            progressIndicator.progress(Bundle.Case_progressMessage_deletingCaseDirCoordSvcNode());
            try {
                String casDirNodePath = CoordinationServiceUtils.getCaseDirectoryNodePath(caseNodeData.getDirectory());
                coordinationService.deleteNode(CategoryNode.CASES, casDirNodePath);
            } catch (CoordinationServiceException | InterruptedException ex) {
                logger.log(Level.SEVERE, String.format("Error deleting the case directory lock node for %s (%s) in %s", metadata.getCaseDisplayName(), metadata.getCaseName(), metadata.getCaseDirectory()), ex); //NON-NLS
                errorsOccurred = true;
            }
        }

        if (errorsOccurred) {
            throw new CaseActionException(Bundle.Case_exceptionMessage_errorsDeletingCase());
        }
    }

    @Beta
    public static boolean deleteMultiUserCase(CaseNodeData caseNodeData, CaseMetadata metadata, ProgressIndicator progressIndicator, Logger logger) throws InterruptedException {
        boolean errorsOccurred = false;
        try {
            deleteMultiUserCaseDatabase(caseNodeData, metadata, progressIndicator, logger);
            deleteMultiUserCaseTextIndex(caseNodeData, metadata, progressIndicator, logger);
            deleteMultiUserCaseDirectory(caseNodeData, metadata, progressIndicator, logger);
            deleteFromRecentCases(metadata, progressIndicator);
        } catch (UserPreferencesException | ClassNotFoundException | SQLException ex) {
            errorsOccurred = true;
            logger.log(Level.WARNING, String.format("Failed to delete the case database for %s (%s) in %s", metadata.getCaseDisplayName(), metadata.getCaseName(), metadata.getCaseDirectory()), ex); //NON-NLS
        } catch (KeywordSearchServiceException ex) {
            errorsOccurred = true;
            logger.log(Level.WARNING, String.format("Failed to delete the text index for %s (%s) in %s", metadata.getCaseDisplayName(), metadata.getCaseName(), metadata.getCaseDirectory()), ex); //NON-NLS
        } catch (CaseActionException ex) {
            errorsOccurred = true;
            logger.log(Level.WARNING, String.format("Failed to delete the case directory for %s (%s) in %s", metadata.getCaseDisplayName(), metadata.getCaseName(), metadata.getCaseDirectory()), ex); //NON-NLS
        }
        return errorsOccurred;
    }

    @Messages({
        "Case.progressMessage.deletingCaseDatabase=Deleting case database..."
    })
    private static void deleteMultiUserCaseDatabase(CaseNodeData caseNodeData, CaseMetadata metadata, ProgressIndicator progressIndicator, Logger logger) throws UserPreferencesException, ClassNotFoundException, SQLException, InterruptedException {
        if (!caseNodeData.isDeletedFlagSet(CaseNodeData.DeletedFlags.CASE_DB)) {
            progressIndicator.progress(Bundle.Case_progressMessage_deletingCaseDatabase());
            logger.log(Level.INFO, String.format("Deleting case database for %s (%s) in %s", caseNodeData.getDisplayName(), caseNodeData.getName(), caseNodeData.getDirectory())); //NON-NLS
            CaseDbConnectionInfo info = UserPreferences.getDatabaseConnectionInfo();
            String url = "jdbc:postgresql://" + info.getHost() + ":" + info.getPort() + "/postgres"; //NON-NLS
            Class.forName("org.postgresql.Driver"); //NON-NLS
            try (Connection connection = DriverManager.getConnection(url, info.getUserName(), info.getPassword()); Statement statement = connection.createStatement()) {
                String dbExistsQuery = "SELECT 1 from pg_database WHERE datname = '" + metadata.getCaseDatabaseName() + "'"; //NON-NLS
                try (ResultSet queryResult = statement.executeQuery(dbExistsQuery)) {
                    if (queryResult.next()) {
                        String deleteCommand = "DROP DATABASE \"" + metadata.getCaseDatabaseName() + "\""; //NON-NLS
                        statement.execute(deleteCommand);
                    }
                }
            }
            setDeletedItemFlag(caseNodeData, CaseNodeData.DeletedFlags.CASE_DB);
        }
    }

    private static void deleteMultiUserCaseTextIndex(CaseNodeData caseNodeData, CaseMetadata metadata, ProgressIndicator progressIndicator, Logger logger) throws KeywordSearchServiceException, InterruptedException {
        if (!caseNodeData.isDeletedFlagSet(CaseNodeData.DeletedFlags.TEXT_INDEX)) {
            logger.log(Level.INFO, String.format("Deleting text index for %s", caseNodeData.getDisplayName(), caseNodeData.getName(), caseNodeData.getDirectory())); //NON-NLS
            deleteTextIndex(metadata, progressIndicator);
            setDeletedItemFlag(caseNodeData, CaseNodeData.DeletedFlags.TEXT_INDEX);
        }
    }

    @Messages({
        "Case.progressMessage.deletingTextIndex=Deleting text index..."
    })
    private static void deleteTextIndex(CaseMetadata metadata, ProgressIndicator progressIndicator) throws KeywordSearchServiceException {
        progressIndicator.progress(Bundle.Case_progressMessage_deletingTextIndex());

        for (KeywordSearchService searchService : Lookup.getDefault().lookupAll(KeywordSearchService.class
        )) {
            searchService.deleteTextIndex(metadata);
        }
    }

    private static void deleteMultiUserCaseDirectory(CaseNodeData caseNodeData, CaseMetadata metadata, ProgressIndicator progressIndicator, Logger logger) throws CaseActionException, InterruptedException {
        if (!caseNodeData.isDeletedFlagSet(CaseNodeData.DeletedFlags.CASE_DIR)) {
            logger.log(Level.INFO, String.format("Deleting case directory for %s", caseNodeData.getDisplayName(), caseNodeData.getName(), caseNodeData.getDirectory())); //NON-NLS
            deleteCaseDirectory(metadata, progressIndicator);
            setDeletedItemFlag(caseNodeData, CaseNodeData.DeletedFlags.CASE_DIR);
        }
    }

    @Messages({
        "Case.progressMessage.deletingCaseDirectory=Deleting case directory..."
    })
    private static void deleteCaseDirectory(CaseMetadata metadata, ProgressIndicator progressIndicator) throws CaseActionException {
        progressIndicator.progress(Bundle.Case_progressMessage_deletingCaseDirectory());
        if (!FileUtil.deleteDir(new File(metadata.getCaseDirectory()))) {
            throw new CaseActionException(String.format("Failed to delete %s", metadata.getCaseDirectory())); //NON-NLS
        }
    }

    @Messages({
        "Case.progressMessage.removingCaseFromRecentCases=Removing case from Recent Cases menu..."
    })
    private static void deleteFromRecentCases(CaseMetadata metadata, ProgressIndicator progressIndicator) {
        if (RuntimeProperties.runningWithGUI()) {
            progressIndicator.progress(Bundle.Case_progressMessage_removingCaseFromRecentCases());
            SwingUtilities.invokeLater(() -> {
                RecentCases.getInstance().removeRecentCase(metadata.getCaseDisplayName(), metadata.getFilePath().toString());
            });
        }
    }

    private static boolean isNoNodeException(CoordinationServiceException ex) {
        boolean isNodeNodeEx = false;
        Throwable cause = ex.getCause();
        if (cause != null) {
            String causeMessage = cause.getMessage();
            isNodeNodeEx = causeMessage.contains(NO_NODE_ERROR_MSG_FRAGMENT);
        }
        return isNodeNodeEx;
    }

    private static void setDeletedItemFlag(CaseNodeData caseNodeData, CaseNodeData.DeletedFlags flag) throws InterruptedException {
        try {
            caseNodeData.setDeletedFlag(flag);
            CaseNodeData.writeCaseNodeData(caseNodeData);
        } catch (CaseNodeDataException ex) {
            logger.log(Level.SEVERE, String.format("Error updating deleted item flag %s for %s (%s) in %s", flag.name(), caseNodeData.getDisplayName(), caseNodeData.getName(), caseNodeData.getDirectory()), ex);

        }
    }

    private interface CaseAction<T, V, R> {

        R execute(T progressIndicator, V additionalParams) throws CaseActionException;
    }

    private enum CaseLockType {
        SHARED, EXCLUSIVE;
    }

    @ThreadSafe
    private final static class CancelButtonListener implements ActionListener {

        private final String cancellationMessage;
        @GuardedBy("this")
        private boolean cancelRequested;
        @GuardedBy("this")
        private CaseContext caseContext;
        @GuardedBy("this")
        private Future<?> caseActionFuture;

        private CancelButtonListener(String cancellationMessage) {
            this.cancellationMessage = cancellationMessage;
        }

        private synchronized void setCaseContext(CaseContext caseContext) {
            this.caseContext = caseContext;
            /*
             * If the cancel button has already been pressed, pass the
             * cancellation on to the case context.
             */
            if (cancelRequested) {
                cancel();
            }
        }

        private synchronized void setCaseActionFuture(Future<?> caseActionFuture) {
            this.caseActionFuture = caseActionFuture;
            /*
             * If the cancel button has already been pressed, cancel the Future
             * of the task.
             */
            if (cancelRequested) {
                cancel();
            }
        }

        @Override
        public synchronized void actionPerformed(ActionEvent event) {
            cancel();
        }

        private void cancel() {
            /*
             * At a minimum, set the cancellation requested flag of this
             * listener.
             */
            this.cancelRequested = true;
            if (null != this.caseContext) {
                /*
                 * Set the cancellation request flag and display the
                 * cancellation message in the progress indicator for the case
                 * context associated with this listener.
                 */
                if (RuntimeProperties.runningWithGUI()) {
                    ProgressIndicator progressIndicator = this.caseContext.getProgressIndicator();
                    if (progressIndicator instanceof ModalDialogProgressIndicator) {
                        ((ModalDialogProgressIndicator) progressIndicator).setCancelling(cancellationMessage);
                    }
                }
                this.caseContext.requestCancel();
            }
            if (null != this.caseActionFuture) {
                /*
                 * Cancel the Future of the task associated with this listener.
                 * Note that the task thread will be interrupted if the task is
                 * blocked.
                 */
                this.caseActionFuture.cancel(true);
            }
        }
    }

    private static class TaskThreadFactory implements ThreadFactory {

        private final String threadName;

        private TaskThreadFactory(String threadName) {
            this.threadName = threadName;
        }

        @Override
        public Thread newThread(Runnable task) {
            return new Thread(task, threadName);
        }

    }

    @Deprecated
    public static String getAppName() {
        return UserPreferences.getAppName();
    }

    @Deprecated
    public static void create(String caseDir, String caseDisplayName, String caseNumber, String examiner) throws CaseActionException {
        createAsCurrentCase(caseDir, caseDisplayName, caseNumber, examiner, CaseType.SINGLE_USER_CASE);
    }

    @Deprecated
    public static void create(String caseDir, String caseDisplayName, String caseNumber, String examiner, CaseType caseType) throws CaseActionException {
        createAsCurrentCase(caseDir, caseDisplayName, caseNumber, examiner, caseType);
    }

    @Deprecated
    public static void open(String caseMetadataFilePath) throws CaseActionException {
        openAsCurrentCase(caseMetadataFilePath);
    }

    @Deprecated
    public void closeCase() throws CaseActionException {
        closeCurrentCase();
    }

    @Deprecated
    public static void invokeStartupDialog() {
        StartupWindowProvider.getInstance().open();
    }

    @Deprecated
    public static String convertTimeZone(String timeZoneId) {
        return TimeZoneUtils.convertToAlphaNumericFormat(timeZoneId);
    }

    @Deprecated
    public static boolean pathExists(String filePath) {
        return new File(filePath).isFile();
    }

    @Deprecated
    public static String getAutopsyVersion() {
        return Version.getVersion();
    }

    @Deprecated
    public static boolean existsCurrentCase() {
        return isCaseOpen();
    }

    @Deprecated
    public static String getModulesOutputDirRelPath() {
        return "ModuleOutput"; //NON-NLS
    }

    @Deprecated
    public static PropertyChangeSupport
            getPropertyChangeSupport() {
        return new PropertyChangeSupport(Case.class
        );
    }

    @Deprecated
    public String getModulesOutputDirAbsPath() {
        return getModuleDirectory();
    }

    @Deprecated
    public Image addImage(String imgPath, long imgId, String timeZone) throws CaseActionException {
        try {
            Image newDataSource = caseDb.getImageById(imgId);
            notifyDataSourceAdded(newDataSource, UUID.randomUUID());
            return newDataSource;
        } catch (TskCoreException ex) {
            throw new CaseActionException(NbBundle.getMessage(this.getClass(), "Case.addImg.exception.msg"), ex);
        }
    }

    @Deprecated
    public Set<TimeZone> getTimeZone() {
        return getTimeZones();
    }

    @Deprecated
    public void deleteReports(Collection<? extends Report> reports, boolean deleteFromDisk) throws TskCoreException {
        deleteReports(reports);
    }

}