BaseDataSourceSummaryPanel.java

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/*
 * Autopsy Forensic Browser
 *
 * Copyright 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.datasourcesummary.ui;

import java.beans.PropertyChangeEvent;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.logging.Level;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import javax.swing.JPanel;
import javax.swing.SwingWorker;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.lang3.StringUtils;
import org.openide.util.NbBundle.Messages;
import org.sleuthkit.autopsy.casemodule.Case;
import org.sleuthkit.autopsy.casemodule.NoCurrentCaseException;
import org.sleuthkit.autopsy.coreutils.Logger;
import org.sleuthkit.autopsy.datasourcesummary.uiutils.CellModelTableCellRenderer;
import org.sleuthkit.autopsy.datasourcesummary.uiutils.DataFetchResult;
import org.sleuthkit.autopsy.datasourcesummary.uiutils.DataFetchWorker;
import org.sleuthkit.autopsy.datasourcesummary.uiutils.DataFetchWorker.DataFetchComponents;
import org.sleuthkit.autopsy.datasourcesummary.uiutils.EventUpdateHandler;
import org.sleuthkit.autopsy.datasourcesummary.uiutils.LoadableComponent;
import org.sleuthkit.autopsy.datasourcesummary.uiutils.SwingWorkerSequentialExecutor;
import org.sleuthkit.autopsy.datasourcesummary.uiutils.UpdateGovernor;
import org.sleuthkit.autopsy.directorytree.DirectoryTreeTopComponent;
import org.sleuthkit.autopsy.directorytree.ViewContextAction;
import org.sleuthkit.autopsy.ingest.IngestManager.IngestJobEvent;
import org.sleuthkit.autopsy.ingest.ModuleContentEvent;
import org.sleuthkit.autopsy.ingest.ModuleDataEvent;
import org.sleuthkit.datamodel.AbstractFile;
import org.sleuthkit.datamodel.BlackboardArtifact;
import org.sleuthkit.datamodel.Content;
import org.sleuthkit.datamodel.DataSource;
import org.sleuthkit.datamodel.TskCoreException;

@Messages({"BaseDataSourceSummaryPanel_goToArtifact=View Source Result",
    "BaseDataSourceSummaryPanel_goToFile=View Source File in Directory"})
abstract class BaseDataSourceSummaryPanel extends JPanel {

    private static final long serialVersionUID = 1L;

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

    private final SwingWorkerSequentialExecutor executor = new SwingWorkerSequentialExecutor();
    private final EventUpdateHandler updateHandler;
    private final List<UpdateGovernor> governors;

    private Runnable notifyParentClose = null;

    private DataSource dataSource;

    private final UpdateGovernor updateGovernor = new UpdateGovernor() {
        private boolean isInDataSource(BlackboardArtifact art, DataSource ds) {
            try {

                return (art.getDataSource() != null && art.getDataSource().getId() == ds.getId());
            } catch (TskCoreException ex) {
                logger.log(Level.WARNING, "There was an error fetching datasource for artifact.", ex);
                return false;
            }
        }

        @Override
        public boolean isRefreshRequired(ModuleDataEvent evt) {
            DataSource ds = getDataSource();
            // make sure there is an event.
            if (ds == null || evt == null) {
                return false;
            }

            //if there are no artifacts with matching datasource, return
            // if no artifacts are present, pass it on just in case there was something wrong with ModuleDataEvent
            if (evt.getArtifacts() != null
                    && !evt.getArtifacts().isEmpty()
                    && !evt.getArtifacts().stream().anyMatch((art) -> isInDataSource(art, ds))) {
                return false;
            }

            // otherwise, see if there is something that wants updates
            for (UpdateGovernor governor : governors) {
                if (governor.isRefreshRequired(evt)) {
                    return true;
                }
            }

            return false;
        }

        @Override
        public boolean isRefreshRequired(ModuleContentEvent evt) {
            DataSource ds = getDataSource();
            // make sure there is an event.
            if (ds == null || evt == null) {
                return false;
            }

            try {
                // if the underlying content has a datasource and that datasource != the 
                // current datasource, return false
                if (evt.getSource() instanceof Content
                        && ((Content) evt.getSource()).getDataSource() != null
                        && ((Content) evt.getSource()).getDataSource().getId() != ds.getId()) {
                    return false;
                }
            } catch (TskCoreException ex) {
                // on an exception, keep going for tolerance sake
                logger.log(Level.WARNING, "There was an error fetching datasource for content.", ex);
            }

            for (UpdateGovernor governor : governors) {
                if (governor.isRefreshRequired(evt)) {
                    return true;
                }
            }

            return false;
        }

        @Override
        public boolean isRefreshRequired(AbstractFile file) {
            DataSource currentDataSource = getDataSource();
            if (currentDataSource == null || file == null) {
                return false;
            }

            // make sure the file is for the current data source
            Long fileDsId = null;
            try {
                Content fileDataSource = file.getDataSource();
                fileDsId = fileDataSource.getId();
            } catch (TskCoreException ex) {
                logger.log(Level.WARNING, "Unable to get the datasource for newly added file", ex);
            }

            if (fileDsId != null && currentDataSource.getId() == fileDsId) {
                for (UpdateGovernor governor : governors) {
                    if (governor.isRefreshRequired(file)) {
                        return true;
                    }
                }
            }

            return false;
        }

        @Override
        public boolean isRefreshRequired(IngestJobEvent evt) {
            for (UpdateGovernor governor : governors) {
                if (governor.isRefreshRequired(evt)) {
                    return true;
                }
            }

            return false;
        }

        @Override
        public boolean isRefreshRequiredForCaseEvent(PropertyChangeEvent evt) {
            for (UpdateGovernor governor : governors) {
                if (governor.isRefreshRequiredForCaseEvent(evt)) {
                    return true;
                }
            }

            return false;
        }

        @Override
        public Set<Case.Events> getCaseEventUpdates() {
            // return the union of all case events sets from delegates.
            return governors.stream()
                    .filter(governor -> governor.getCaseEventUpdates() != null)
                    .flatMap(governor -> governor.getCaseEventUpdates().stream())
                    .collect(Collectors.toSet());
        }

        @Override
        public Set<IngestJobEvent> getIngestJobEventUpdates() {
            // return the union of all case events sets from delegates.
            return governors.stream()
                    .filter(governor -> governor.getIngestJobEventUpdates() != null)
                    .flatMap(governor -> governor.getIngestJobEventUpdates().stream())
                    .collect(Collectors.toSet());
        }
    };

    protected BaseDataSourceSummaryPanel(UpdateGovernor... governors) {
        this.governors = (governors == null) ? Collections.emptyList() : Arrays.asList(governors);
        this.updateHandler = new EventUpdateHandler(this::onRefresh, updateGovernor);
        this.updateHandler.register();
    }

    protected CellModelTableCellRenderer.MenuItem getArtifactNavigateItem(BlackboardArtifact artifact) {
        if (artifact == null) {
            return null;
        }

        return new CellModelTableCellRenderer.DefaultMenuItem(
                Bundle.BaseDataSourceSummaryPanel_goToArtifact(),
                () -> {
                    final DirectoryTreeTopComponent dtc = DirectoryTreeTopComponent.findInstance();

                    // Navigate to the source context artifact.
                    if (dtc != null && artifact != null) {
                        dtc.viewArtifact(artifact);
                    }

                    notifyParentClose();
                });
    }

    private static final Pattern windowsDrivePattern = Pattern.compile("^[A-Za-z]\\:(.*)$");

    private String normalizePath(String path) {
        if (path == null) {
            return null;
        }

        String trimmed = path.trim();
        Matcher match = windowsDrivePattern.matcher(trimmed);
        if (match.find()) {
            return FilenameUtils.normalize(match.group(1), true);
        } else {
            return FilenameUtils.normalize(trimmed, true);
        }
    }

    protected CellModelTableCellRenderer.MenuItem getFileNavigateItem(String path) {
        if (StringUtils.isNotBlank(path)) {
            Path p = Paths.get(path);
            String fileName = normalizePath(p.getFileName().toString());
            String directory = normalizePath(p.getParent().toString());

            if (fileName != null && directory != null) {
                try {
                    List<AbstractFile> files = Case.getCurrentCaseThrows().getSleuthkitCase().findFiles(getDataSource(), fileName, directory);
                    if (CollectionUtils.isNotEmpty(files)) {
                        return getFileNavigateItem(files.get(0));
                    }
                } catch (TskCoreException | NoCurrentCaseException ex) {
                    logger.log(Level.WARNING, "There was an error fetching file for path: " + path, ex);
                }
            }
        }

        return null;
    }

    protected CellModelTableCellRenderer.MenuItem getFileNavigateItem(AbstractFile file) {
        if (file == null) {
            return null;
        }

        return new CellModelTableCellRenderer.DefaultMenuItem(
                Bundle.BaseDataSourceSummaryPanel_goToFile(),
                () -> {
                    new ViewContextAction(Bundle.BaseDataSourceSummaryPanel_goToFile(), file)
                            .actionPerformed(null);

                    notifyParentClose();
                });
    }

    public void close() {
        executor.cancelRunning();
        updateHandler.unregister();
    }

    synchronized void setDataSource(DataSource dataSource) {
        this.dataSource = dataSource;
        this.executor.cancelRunning();
        onNewDataSource(this.dataSource);
    }

    protected void notifyParentClose() {
        if (notifyParentClose != null) {
            notifyParentClose.run();
        }
    }

    void setParentCloseListener(Runnable action) {
        notifyParentClose = action;
    }

    protected synchronized DataSource getDataSource() {
        return this.dataSource;
    }

    protected void submit(List<? extends SwingWorker<?, ?>> workers) {
        executor.submit(workers);
    }

    synchronized void onRefresh() {
        // trigger on new data source with the current data source
        fetchInformation(this.dataSource);
    }

    protected abstract void fetchInformation(DataSource dataSource);

    protected void fetchInformation(List<DataFetchComponents<DataSource, ?>> dataFetchComponents, DataSource dataSource) {
        if (dataSource == null || !Case.isCaseOpen()) {
            dataFetchComponents.forEach((item) -> item.getResultHandler()
                    .accept(DataFetchResult.getSuccessResult(null)));
        } else {
            // create swing workers to run for each loadable item
            List<DataFetchWorker<?, ?>> workers = dataFetchComponents
                    .stream()
                    .map((components) -> new DataFetchWorker<>(components, dataSource))
                    .collect(Collectors.toList());

            // submit swing workers to run
            if (!workers.isEmpty()) {
                submit(workers);
            }
        }
    }

    protected abstract void onNewDataSource(DataSource dataSource);

    protected void onNewDataSource(
            List<DataFetchComponents<DataSource, ?>> dataFetchComponents,
            List<? extends LoadableComponent<?>> loadableComponents,
            DataSource dataSource) {
        // if no data source is present or the case is not open,
        // set results for tables to null.
        if (dataSource == null || !Case.isCaseOpen()) {
            dataFetchComponents.forEach((item) -> item.getResultHandler()
                    .accept(DataFetchResult.getSuccessResult(null)));

        } else {
            // set tables to display loading screen
            loadableComponents.forEach((table) -> table.showDefaultLoadingMessage());

            fetchInformation(dataSource);
        }
    }
}