PurgeMojo.java

/*
 * This file is part of dependency-check-maven.
 *
 * 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.
 *
 * Copyright (c) 2015 Jeremy Long. All Rights Reserved.
 */
package org.owasp.dependencycheck.maven;

import java.io.File;
import java.io.IOException;
import java.util.Locale;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.plugins.annotations.LifecyclePhase;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.ResolutionScope;
import org.owasp.dependencycheck.utils.Settings;

/**
 * Maven Plugin that purges the local copy of the NVD data.
 *
 * @author Jeremy Long
 */
@Mojo(
        name = "purge",
        defaultPhase = LifecyclePhase.GENERATE_RESOURCES,
        threadSafe = true,
        requiresDependencyResolution = ResolutionScope.NONE,
        requiresOnline = true,
        aggregator = true
)
public class PurgeMojo extends BaseDependencyCheckMojo {

    /**
     * Returns false; this mojo cannot generate a report.
     *
     * @return <code>false</code>
     */
    @Override
    public boolean canGenerateReport() {
        return false;
    }

    /**
     * Purges the local copy of the NVD.
     *
     * @throws MojoExecutionException thrown if there is an exception executing
     * the goal
     * @throws MojoFailureException thrown if dependency-check is configured to
     * fail the build
     */
    @Override
    public void runCheck() throws MojoExecutionException, MojoFailureException {

        if (getConnectionString() != null && !getConnectionString().isEmpty()) {
            final String msg = "Unable to purge the local NVD when using a non-default connection string";
            if (this.isFailOnError()) {
                throw new MojoFailureException(msg);
            }
            getLog().error(msg);
        } else {
            populateSettings();
            File db;
            try {
                db = new File(Settings.getDataDirectory(), "dc.h2.db");
                if (db.exists()) {
                    if (db.delete()) {
                        getLog().info("Database file purged; local copy of the NVD has been removed");
                    } else {
                        final String msg = String.format("Unable to delete '%s'; please delete the file manually", db.getAbsolutePath());
                        if (this.isFailOnError()) {
                            throw new MojoFailureException(msg);
                        }
                        getLog().error(msg);
                    }
                } else {
                    final String msg = String.format("Unable to purge database; the database file does not exists: %s", db.getAbsolutePath());
                    if (this.isFailOnError()) {
                        throw new MojoFailureException(msg);
                    }
                    getLog().error(msg);
                }
            } catch (IOException ex) {
                final String msg = "Unable to delete the database";
                if (this.isFailOnError()) {
                    throw new MojoExecutionException(msg, ex);
                }
                getLog().error(msg);
            }
            Settings.cleanup();
        }
    }

    /**
     * Returns the report name.
     *
     * @param locale the location
     * @return the report name
     */
    @Override
    public String getName(Locale locale) {
        return "dependency-check-purge";
    }

    /**
     * Gets the description of the Dependency-Check report to be displayed in
     * the Maven Generated Reports page.
     *
     * @param locale The Locale to get the description for
     * @return the description
     */
    @Override
    public String getDescription(Locale locale) {
        return "Purges the local cache of the NVD dataT.";
    }

}