/*
    * 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) 2013 Jeremy Long. All Rights Reserved.
   */
  package org.owasp.dependencycheck.maven;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.UnsupportedEncodingException;
  import java.net.URLEncoder;
  import java.text.DateFormat;
  import java.util.Date;
  import java.util.List;
  import java.util.Locale;
  import java.util.Set;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.doxia.sink.Sink;
  import org.apache.maven.doxia.sink.SinkFactory;
  import org.apache.maven.plugin.AbstractMojo;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.plugins.annotations.Component;
  import org.apache.maven.plugins.annotations.LifecyclePhase;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.plugins.annotations.ResolutionScope;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.reporting.MavenMultiPageReport;
  import org.apache.maven.reporting.MavenReport;
  import org.apache.maven.reporting.MavenReportException;
  import org.owasp.dependencycheck.Engine;
  import org.owasp.dependencycheck.data.nvdcve.CveDB;
  import org.owasp.dependencycheck.data.nvdcve.DatabaseException;
  import org.owasp.dependencycheck.data.nvdcve.DatabaseProperties;
  import org.owasp.dependencycheck.dependency.Dependency;
  import org.owasp.dependencycheck.dependency.Evidence;
  import org.owasp.dependencycheck.dependency.Identifier;
  import org.owasp.dependencycheck.dependency.Reference;
  import org.owasp.dependencycheck.dependency.Vulnerability;
  import org.owasp.dependencycheck.dependency.VulnerableSoftware;
  import org.owasp.dependencycheck.reporting.ReportGenerator;
  import org.owasp.dependencycheck.utils.LogUtils;
  import org.owasp.dependencycheck.utils.Settings;
  
  /**
   * Maven Plugin that checks project dependencies to see if they have any known published vulnerabilities.
   *
   * @author Jeremy Long <jeremy.long@owasp.org>
   */
  @Mojo(name = "check", defaultPhase = LifecyclePhase.COMPILE, threadSafe = true,
          requiresDependencyResolution = ResolutionScope.RUNTIME_PLUS_SYSTEM,
          requiresOnline = true)
  public class DependencyCheckMojo extends AbstractMojo implements MavenMultiPageReport {
  
      /**
       * The properties file location.
       */
      private static final String PROPERTIES_FILE = "mojo.properties";
      /**
       * Name of the logging properties file.
       */
      private static final String LOG_PROPERTIES_FILE = "log.properties";
      /**
       * The name of the test scope.
       */
      public static final String TEST_SCOPE = "test";
      /**
       * System specific new line character.
       */
      private static final String NEW_LINE = System.getProperty("line.separator", "\n").intern();
      // <editor-fold defaultstate="collapsed" desc="Maven bound parameters and components">
      /**
       * The Maven Project Object.
       */
      @Component
      private MavenProject project;
      /**
       * The name of the site report destination.
       */
      @Parameter(property = "report-name", defaultValue = "dependency-check-report")
      private String reportName;
      /**
       * The path to the verbose log
      */
     @Parameter(property = "logfile", defaultValue = "")
     private String logFile;
     /**
      * The name of the report to be displayed in the Maven Generated Reports page
      */
     @Parameter(property = "name", defaultValue = "Dependency-Check")
     private String name;
     /**
      * The description of the Dependency-Check report to be displayed in the Maven Generated Reports page
      */
     @Parameter(property = "description", defaultValue = "A report providing details on any published "
             + "vulnerabilities within project dependencies. This report is a best effort but may contain "
             + "false positives and false negatives.")
     private String description;
     /**
      * Specifies the destination directory for the generated Dependency-Check report.
      */
     @Parameter(property = "reportOutputDirectory", defaultValue = "${project.reporting.outputDirectory}", required = true)
     private File reportOutputDirectory;
     /**
      * Specifies if the build should be failed if a CVSS score above a specified level is identified. The default is 11
      * which means since the CVSS scores are 0-10, by default the build will never fail.
      */
     @Parameter(property = "failBuildOnCVSS", defaultValue = "11", required = true)
     private float failBuildOnCVSS = 11;
     /**
      * The output directory.
      */
     @Parameter(defaultValue = "${project.build.directory}", required = true)
     private File outputDirectory;
     /**
      * Sets whether auto-updating of the NVD CVE/CPE data is enabled. It is not recommended that this be turned to
      * false. Default is true.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "autoupdate", defaultValue = "true", required = true)
     private boolean autoUpdate = true;
     /**
      * The report format to be generated (HTML, XML, VULN, ALL). This configuration option has no affect if using this
      * within the Site plugin unless the externalReport is set to true. Default is HTML.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "format", defaultValue = "HTML", required = true)
     private String format = "HTML";
     /**
      * Sets whether or not the external report format should be used.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "externalReport", defaultValue = "false", required = true)
     private boolean externalReport = false;
     /**
      * The Proxy URL.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "proxyUrl", defaultValue = "", required = false)
     private String proxyUrl = null;
     /**
      * The Proxy Port.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "proxyPort", defaultValue = "", required = false)
     private String proxyPort = null;
     /**
      * The Proxy username.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "proxyUsername", defaultValue = "", required = false)
     private String proxyUsername = null;
     /**
      * The Proxy password.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "proxyPassword", defaultValue = "", required = false)
     private String proxyPassword = null;
     /**
      * The Connection Timeout.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "connectionTimeout", defaultValue = "", required = false)
     private String connectionTimeout = null;
     /**
      * The Connection Timeout.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "suppressionFile", defaultValue = "", required = false)
     private String suppressionFile = null;
     /**
      * Flag indicating whether or not to show a summary in the output.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "showSummary", defaultValue = "true", required = false)
     private boolean showSummary = true;
     /**
      * Whether or not the Nexus Analyzer is enabled.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "nexusAnalyzerEnabled", defaultValue = "true", required = false)
     private boolean nexusAnalyzerEnabled = true;
     /**
      * Whether or not the Nexus Analyzer is enabled.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "nexusUrl", defaultValue = "", required = false)
     private String nexusUrl;
     /**
      * The database connection string.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "connectionString", defaultValue = "", required = false)
     private String connectionString;
     /**
      * The database driver name. An example would be org.h2.Driver.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "databaseDriverName", defaultValue = "", required = false)
     private String databaseDriverName;
     /**
      * The path to the database driver if it is not on the class path.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "databaseDriverPath", defaultValue = "", required = false)
     private String databaseDriverPath;
     /**
      * The database user name.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "databaseUser", defaultValue = "", required = false)
     private String databaseUser;
     /**
      * The password to use when connecting to the database.
      */
     @SuppressWarnings({"CanBeFinal", "FieldCanBeLocal"})
     @Parameter(property = "databasePassword", defaultValue = "", required = false)
     private String databasePassword;
     // </editor-fold>
 
     /**
      * Executes the Dependency-Check on the dependent libraries.
      *
      * @return the Engine used to scan the dependencies.
      */
     private Engine executeDependencyCheck() {
 
         final InputStream in = DependencyCheckMojo.class.getClassLoader().getResourceAsStream(LOG_PROPERTIES_FILE);
         LogUtils.prepareLogger(in, logFile);
 
         populateSettings();
         final Engine engine = new Engine();
         final Set<Artifact> artifacts = project.getArtifacts();
         for (Artifact a : artifacts) {
             if (!TEST_SCOPE.equals(a.getScope())) {
                 engine.scan(a.getFile().getAbsolutePath());
             }
         }
         engine.analyzeDependencies();
         return engine;
     }
 
     /**
      * Generates the reports for a given dependency-check engine.
      *
      * @param engine a dependency-check engine
      */
     private void generateExternalReports(Engine engine) {
         DatabaseProperties prop = null;
         CveDB cve = null;
         try {
             cve = new CveDB();
             cve.open();
             prop = cve.getDatabaseProperties();
         } catch (DatabaseException ex) {
             Logger.getLogger(DependencyCheckMojo.class.getName()).log(Level.FINE, "Unable to retrieve DB Properties", ex);
         } finally {
             if (cve != null) {
                 cve.close();
             }
         }
         final ReportGenerator r = new ReportGenerator(project.getName(), engine.getDependencies(), engine.getAnalyzers(), prop);
         try {
             r.generateReports(outputDirectory.getCanonicalPath(), format);
         } catch (IOException ex) {
             Logger.getLogger(DependencyCheckMojo.class.getName()).log(Level.SEVERE,
                     "Unexpected exception occurred during analysis; please see the verbose error log for more details.");
             Logger.getLogger(DependencyCheckMojo.class.getName()).log(Level.FINE, null, ex);
         } catch (Exception ex) {
             Logger.getLogger(DependencyCheckMojo.class.getName()).log(Level.SEVERE,
                     "Unexpected exception occurred during analysis; please see the verbose error log for more details.");
             Logger.getLogger(DependencyCheckMojo.class.getName()).log(Level.FINE, null, ex);
         }
     }
 
     /**
      * Generates a dependency-check report using the Maven Site format.
      *
      * @param engine the engine used to scan the dependencies
      * @param sink the sink to write the data to
      */
     private void generateMavenSiteReport(final Engine engine, Sink sink) {
         final List<Dependency> dependencies = engine.getDependencies();
 
         writeSiteReportHeader(sink, project.getName());
         writeSiteReportTOC(sink, dependencies);
 
         int cnt = 0;
         for (Dependency d : dependencies) {
             writeSiteReportDependencyHeader(sink, d);
             cnt = writeSiteReportDependencyAnalysisExceptions(d, cnt, sink);
             cnt = writeSiteReportDependencyEvidenceUsed(d, cnt, sink);
             cnt = writeSiteReportDependencyRelatedDependencies(d, cnt, sink);
             writeSiteReportDependencyIdentifiers(d, sink);
             writeSiteReportDependencyVulnerabilities(d, sink, cnt);
         }
         sink.body_();
     }
 
     // <editor-fold defaultstate="collapsed" desc="various writeXXXXX methods to generate the Site Report">
     /**
      * Writes the vulnerabilities to the site report.
      *
      * @param d the dependency
      * @param sink the sink to write the data to
      * @param collapsibleHeaderCount the collapsible header count
      */
     private void writeSiteReportDependencyVulnerabilities(Dependency d, Sink sink, int collapsibleHeaderCount) {
         int cnt = collapsibleHeaderCount;
         if (d.getVulnerabilities() != null && !d.getVulnerabilities().isEmpty()) {
             for (Vulnerability v : d.getVulnerabilities()) {
 
                 sink.paragraph();
                 sink.bold();
                 try {
                     sink.link("http://web.nvd.nist.gov/view/vuln/detail?vulnId=" + URLEncoder.encode(v.getName(), "US-ASCII"));
                     sink.text(v.getName());
                     sink.link_();
                     sink.bold_();
                 } catch (UnsupportedEncodingException ex) {
                     sink.text(v.getName());
                     sink.bold_();
                     sink.lineBreak();
                     sink.text("http://web.nvd.nist.gov/view/vuln/detail?vulnId=" + v.getName());
                 }
                 sink.paragraph_();
                 sink.paragraph();
                 sink.text("Severity: ");
                 if (v.getCvssScore() < 4.0) {
                     sink.text("Low");
                 } else {
                     if (v.getCvssScore() >= 7.0) {
                         sink.text("High");
                     } else {
                         sink.text("Medium");
                     }
                 }
                 sink.lineBreak();
                 sink.text("CVSS Score: " + v.getCvssScore());
                 if (v.getCwe() != null && !v.getCwe().isEmpty()) {
                     sink.lineBreak();
                     sink.text("CWE: ");
                     sink.text(v.getCwe());
                 }
                 sink.paragraph_();
                 sink.paragraph();
                 sink.text(v.getDescription());
                 if (v.getReferences() != null && !v.getReferences().isEmpty()) {
                     sink.list();
                     for (Reference ref : v.getReferences()) {
                         sink.listItem();
                         sink.text(ref.getSource());
                         sink.text(" - ");
                         sink.link(ref.getUrl());
                         sink.text(ref.getName());
                         sink.link_();
                         sink.listItem_();
                     }
                     sink.list_();
                 }
                 sink.paragraph_();
                 if (v.getVulnerableSoftware() != null && !v.getVulnerableSoftware().isEmpty()) {
                     sink.paragraph();
 
                     cnt += 1;
                     sink.rawText("Vulnerable Software <a href=\"javascript:toggleElement(this, 'vulnSoft" + cnt + "')\">[-]</a>");
                     sink.rawText("<div id=\"vulnSoft" + cnt + "\" style=\"display:block\">");
                     sink.list();
                     for (VulnerableSoftware vs : v.getVulnerableSoftware()) {
                         sink.listItem();
                         try {
                             sink.link("http://web.nvd.nist.gov/view/vuln/search-results?cpe=" + URLEncoder.encode(vs.getName(), "US-ASCII"));
                             sink.text(vs.getName());
                             sink.link_();
                             if (vs.hasPreviousVersion()) {
                                 sink.text(" and all previous versions.");
                             }
                         } catch (UnsupportedEncodingException ex) {
                             sink.text(vs.getName());
                             if (vs.hasPreviousVersion()) {
                                 sink.text(" and all previous versions.");
                             }
                             sink.text(" (http://web.nvd.nist.gov/view/vuln/search-results?cpe=" + vs.getName() + ")");
                         }
 
                         sink.listItem_();
                     }
                     sink.list_();
                     sink.rawText("</div>");
                     sink.paragraph_();
                 }
             }
         }
     }
 
     /**
      * Writes the identifiers to the site report.
      *
      * @param d the dependency
      * @param sink the sink to write the data to
      */
     private void writeSiteReportDependencyIdentifiers(Dependency d, Sink sink) {
         if (d.getIdentifiers() != null && !d.getIdentifiers().isEmpty()) {
             sink.sectionTitle4();
             sink.text("Identifiers");
             sink.sectionTitle4_();
             sink.list();
             for (Identifier i : d.getIdentifiers()) {
                 sink.listItem();
                 sink.text(i.getType());
                 sink.text(": ");
                 if (i.getUrl() != null && i.getUrl().length() > 0) {
                     sink.link(i.getUrl());
                     sink.text(i.getValue());
                     sink.link_();
                 } else {
                     sink.text(i.getValue());
                 }
                 if (i.getDescription() != null && i.getDescription().length() > 0) {
                     sink.lineBreak();
                     sink.text(i.getDescription());
                 }
                 sink.listItem_();
             }
             sink.list_();
         }
     }
 
     /**
      * Writes the related dependencies to the site report.
      *
      * @param d the dependency
      * @param sink the sink to write the data to
      * @param collapsibleHeaderCount the collapsible header count
      * @return the collapsible header count
      */
     private int writeSiteReportDependencyRelatedDependencies(Dependency d, int collapsibleHeaderCount, Sink sink) {
         int cnt = collapsibleHeaderCount;
         if (d.getRelatedDependencies() != null && !d.getRelatedDependencies().isEmpty()) {
             cnt += 1;
             sink.sectionTitle4();
             sink.rawText("Related Dependencies <a href=\"javascript:toggleElement(this, 'related" + cnt + "')\">[+]</a>");
             sink.sectionTitle4_();
             sink.rawText("<div id=\"related" + cnt + "\" style=\"display:none\">");
             sink.list();
             for (Dependency r : d.getRelatedDependencies()) {
                 sink.listItem();
                 sink.text(r.getFileName());
                 sink.list();
                 writeListItem(sink, "File Path: " + r.getFilePath());
                 writeListItem(sink, "SHA1: " + r.getSha1sum());
                 writeListItem(sink, "MD5: " + r.getMd5sum());
                 sink.list_();
                 sink.listItem_();
             }
             sink.list_();
             sink.rawText("</div>");
         }
         return cnt;
     }
 
     /**
      * Writes the evidence used to the site report.
      *
      * @param d the dependency
      * @param sink the sink to write the data to
      * @param collapsibleHeaderCount the collapsible header count
      * @return the collapsible header count
      */
     private int writeSiteReportDependencyEvidenceUsed(Dependency d, int collapsibleHeaderCount, Sink sink) {
         int cnt = collapsibleHeaderCount;
         if (d.getEvidenceUsed() != null && d.getEvidenceUsed().size() > 0) {
             cnt += 1;
             sink.sectionTitle4();
             sink.rawText("Evidence Collected <a href=\"javascript:toggleElement(this, 'evidence" + cnt + "')\">[+]</a>");
             sink.sectionTitle4_();
             sink.rawText("<div id=\"evidence" + cnt + "\" style=\"display:none\">");
             sink.table();
             sink.tableRow();
             writeTableHeaderCell(sink, "Source");
             writeTableHeaderCell(sink, "Name");
             writeTableHeaderCell(sink, "Value");
             sink.tableRow_();
             for (Evidence e : d.getEvidenceUsed()) {
                 sink.tableRow();
                 writeTableCell(sink, e.getSource());
                 writeTableCell(sink, e.getName());
                 writeTableCell(sink, e.getValue());
                 sink.tableRow_();
             }
             sink.table_();
             sink.rawText("</div>");
         }
         return cnt;
     }
 
     /**
      * Writes the analysis exceptions generated during analysis to the site report.
      *
      * @param d the dependency
      * @param sink the sink to write the data to
      * @param collapsibleHeaderCount the collapsible header count
      * @return the collapsible header count
      */
     private int writeSiteReportDependencyAnalysisExceptions(Dependency d, int collapsibleHeaderCount, Sink sink) {
         int cnt = collapsibleHeaderCount;
         if (d.getAnalysisExceptions() != null && !d.getAnalysisExceptions().isEmpty()) {
             cnt += 1;
             sink.sectionTitle4();
             sink.rawText("<font style=\"color:red\">Errors occurred during analysis:</font> <a href=\"javascript:toggleElement(this, 'errors"
                     + cnt + "')\">[+]</a>");
             sink.sectionTitle4_();
             sink.rawText("<div id=\"errors" + cnt + "\">");
             sink.list();
             for (Exception e : d.getAnalysisExceptions()) {
                 sink.listItem();
                 sink.text(e.getMessage());
                 sink.listItem_();
             }
             sink.list_();
             sink.rawText("</div>");
         }
         return cnt;
     }
 
     /**
      * Writes the dependency header to the site report.
      *
      * @param d the dependency
      * @param sink the sink to write the data to
      */
     private void writeSiteReportDependencyHeader(Sink sink, Dependency d) {
         sink.sectionTitle2();
         sink.anchor("sha1" + d.getSha1sum());
         sink.text(d.getFileName());
         sink.anchor_();
         sink.sectionTitle2_();
         if (d.getDescription() != null && d.getDescription().length() > 0) {
             sink.paragraph();
             sink.bold();
             sink.text("Description: ");
             sink.bold_();
             sink.text(d.getDescription());
             sink.paragraph_();
         }
         if (d.getLicense() != null && d.getLicense().length() > 0) {
             sink.paragraph();
             sink.bold();
             sink.text("License: ");
             sink.bold_();
             if (d.getLicense().startsWith("http://") && !d.getLicense().contains(" ")) {
                 sink.link(d.getLicense());
                 sink.text(d.getLicense());
                 sink.link_();
             } else {
                 sink.text(d.getLicense());
             }
             sink.paragraph_();
         }
     }
 
     /**
      * Adds a list item to the site report.
      *
      * @param sink the sink to write the data to
      * @param text the text to write
      */
     private void writeListItem(Sink sink, String text) {
         sink.listItem();
         sink.text(text);
         sink.listItem_();
     }
 
     /**
      * Adds a table cell to the site report.
      *
      * @param sink the sink to write the data to
      * @param text the text to write
      */
     private void writeTableCell(Sink sink, String text) {
         sink.tableCell();
         sink.text(text);
         sink.tableCell_();
     }
 
     /**
      * Adds a table header cell to the site report.
      *
      * @param sink the sink to write the data to
      * @param text the text to write
      */
     private void writeTableHeaderCell(Sink sink, String text) {
         sink.tableHeaderCell();
         sink.text(text);
         sink.tableHeaderCell_();
     }
 
     /**
      * Writes the TOC for the site report.
      *
      * @param sink the sink to write the data to
      * @param dependencies the dependencies that are being reported on
      */
     private void writeSiteReportTOC(Sink sink, final List<Dependency> dependencies) {
         sink.list();
         for (Dependency d : dependencies) {
             sink.listItem();
             sink.link("#sha1" + d.getSha1sum());
             sink.text(d.getFileName());
             sink.link_();
             if (!d.getVulnerabilities().isEmpty()) {
                 sink.rawText(" <font style=\"color:red\">•</font>");
             }
             if (!d.getRelatedDependencies().isEmpty()) {
                 sink.list();
                 for (Dependency r : d.getRelatedDependencies()) {
                     writeListItem(sink, r.getFileName());
                 }
                 sink.list_();
             }
             sink.listItem_();
         }
         sink.list_();
     }
 
     /**
      * Writes the site report header.
      *
      * @param sink the sink to write the data to
      * @param projectName the name of the project
      */
     private void writeSiteReportHeader(Sink sink, String projectName) {
         sink.head();
         sink.title();
         sink.text("Dependency-Check Report: " + projectName);
         sink.title_();
         sink.head_();
         sink.body();
         sink.rawText("<script type=\"text/javascript\">");
         sink.rawText("function toggleElement(el, targetId) {");
         sink.rawText("if (el.innerText == '[+]') {");
         sink.rawText("    el.innerText = '[-]';");
         sink.rawText("    document.getElementById(targetId).style.display='block';");
         sink.rawText("} else {");
         sink.rawText("    el.innerText = '[+]';");
         sink.rawText("    document.getElementById(targetId).style.display='none';");
         sink.rawText("}");
 
         sink.rawText("}");
         sink.rawText("</script>");
         sink.section1();
         sink.sectionTitle1();
         sink.text("Project: " + projectName);
         sink.sectionTitle1_();
         sink.date();
         final Date now = new Date();
         sink.text(DateFormat.getDateTimeInstance().format(now));
         sink.date_();
         sink.section1_();
     }
     // </editor-fold>
 
     /**
      * Takes the properties supplied and updates the dependency-check settings. Additionally, this sets the system
      * properties required to change the proxy url, port, and connection timeout.
      */
     private void populateSettings() {
         InputStream mojoProperties = null;
         try {
             mojoProperties = this.getClass().getClassLoader().getResourceAsStream(PROPERTIES_FILE);
             Settings.mergeProperties(mojoProperties);
         } catch (IOException ex) {
             Logger.getLogger(DependencyCheckMojo.class.getName()).log(Level.WARNING, "Unable to load the dependency-check ant task.properties file.");
             Logger.getLogger(DependencyCheckMojo.class.getName()).log(Level.FINE, null, ex);
         } finally {
             if (mojoProperties != null) {
                 try {
                     mojoProperties.close();
                 } catch (IOException ex) {
                     Logger.getLogger(DependencyCheckMojo.class.getName()).log(Level.FINEST, null, ex);
                 }
             }
         }
 
         Settings.setBoolean(Settings.KEYS.AUTO_UPDATE, autoUpdate);
 
         if (proxyUrl != null && !proxyUrl.isEmpty()) {
             Settings.setString(Settings.KEYS.PROXY_URL, proxyUrl);
         }
         if (proxyPort != null && !proxyPort.isEmpty()) {
             Settings.setString(Settings.KEYS.PROXY_PORT, proxyPort);
         }
         if (proxyUsername != null && !proxyUsername.isEmpty()) {
             Settings.setString(Settings.KEYS.PROXY_USERNAME, proxyUsername);
         }
         if (proxyPassword != null && !proxyPassword.isEmpty()) {
             Settings.setString(Settings.KEYS.PROXY_PASSWORD, proxyPassword);
         }
         if (connectionTimeout != null && !connectionTimeout.isEmpty()) {
             Settings.setString(Settings.KEYS.CONNECTION_TIMEOUT, connectionTimeout);
         }
         if (suppressionFile != null && !suppressionFile.isEmpty()) {
             Settings.setString(Settings.KEYS.SUPPRESSION_FILE, suppressionFile);
         }
         Settings.setBoolean(Settings.KEYS.ANALYZER_NEXUS_ENABLED, nexusAnalyzerEnabled);
         if (nexusUrl != null && !nexusUrl.isEmpty()) {
             Settings.setString(Settings.KEYS.ANALYZER_NEXUS_URL, nexusUrl);
         }
         if (databaseDriverName != null && !databaseDriverName.isEmpty()) {
             Settings.setString(Settings.KEYS.DB_DRIVER_NAME, databaseDriverName);
         }
         if (databaseDriverPath != null && !databaseDriverPath.isEmpty()) {
             Settings.setString(Settings.KEYS.DB_DRIVER_PATH, databaseDriverPath);
         }
         if (connectionString != null && !connectionString.isEmpty()) {
             Settings.setString(Settings.KEYS.DB_CONNECTION_STRING, connectionString);
         }
         if (databaseUser != null && !databaseUser.isEmpty()) {
             Settings.setString(Settings.KEYS.DB_USER, databaseUser);
         }
         if (databasePassword != null && !databasePassword.isEmpty()) {
             Settings.setString(Settings.KEYS.DB_PASSWORD, databasePassword);
         }
     }
 
     /**
      * Executes the dependency-check and generates the report.
      *
      * @throws MojoExecutionException if a maven exception occurs
      * @throws MojoFailureException thrown if a CVSS score is found that is higher then the configured level
      */
     public void execute() throws MojoExecutionException, MojoFailureException {
         final Engine engine = executeDependencyCheck();
         generateExternalReports(engine);
         if (this.failBuildOnCVSS <= 10) {
             checkForFailure(engine.getDependencies());
         }
         if (this.showSummary) {
             showSummary(engine.getDependencies());
         }
     }
 
     /**
      * Generates the Dependency-Check Site Report.
      *
      * @param sink the sink to write the report to
      * @param locale the locale to use when generating the report
      * @throws MavenReportException if a Maven report exception occurs
      */
     public void generate(@SuppressWarnings("deprecation") org.codehaus.doxia.sink.Sink sink,
             Locale locale) throws MavenReportException {
         generate((Sink) sink, null, locale);
     }
 
     /**
      * Generates the Dependency-Check Site Report.
      *
      * @param sink the sink to write the report to
      * @param sinkFactory the sink factory
      * @param locale the locale to use when generating the report
      * @throws MavenReportException if a maven report exception occurs
      */
     public void generate(Sink sink, SinkFactory sinkFactory, Locale locale) throws MavenReportException {
         final Engine engine = executeDependencyCheck();
         generateMavenSiteReport(engine, sink);
     }
 
     // <editor-fold defaultstate="collapsed" desc="required setter/getter methods">
     /**
      * Returns the output name.
      *
      * @return the output name
      */
     public String getOutputName() {
         return reportName;
     }
 
     /**
      * Returns the category name.
      *
      * @return the category name
      */
     public String getCategoryName() {
         return MavenReport.CATEGORY_PROJECT_REPORTS;
     }
 
     /**
      * Returns the report name.
      *
      * @param locale the location
      * @return the report name
      */
     public String getName(Locale locale) {
         return name;
     }
 
     /**
      * Sets the Reporting output directory.
      *
      * @param directory the output directory
      */
     public void setReportOutputDirectory(File directory) {
         reportOutputDirectory = directory;
     }
 
     /**
      * Returns the output directory.
      *
      * @return the output directory
      */
     public File getReportOutputDirectory() {
         return reportOutputDirectory;
     }
 
     /**
      * 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
      */
     public String getDescription(Locale locale) {
         return description;
     }
 
     /**
      * Returns whether this is an external report.
      *
      * @return true or false;
      */
     public boolean isExternalReport() {
         return externalReport;
     }
 
     /**
      * Returns whether or not the plugin can generate a report.
      *
      * @return true
      */
     public boolean canGenerateReport() {
         return true;
     }
     // </editor-fold>
 
     /**
      * Checks to see if a vulnerability has been identified with a CVSS score that is above the threshold set in the
      * configuration.
      *
      * @param dependencies the list of dependency objects
      * @throws MojoFailureException thrown if a CVSS score is found that is higher then the threshold set
      */
     private void checkForFailure(List<Dependency> dependencies) throws MojoFailureException {
         final StringBuilder ids = new StringBuilder();
         for (Dependency d : dependencies) {
             for (Vulnerability v : d.getVulnerabilities()) {
                 if (v.getCvssScore() >= failBuildOnCVSS) {
                     if (ids.length() == 0) {
                         ids.append(v.getName());
                     } else {
                         ids.append(", ").append(v.getName());
                     }
                 }
             }
         }
         if (ids.length() > 0) {
             final String msg = String.format("%n%nDependency-Check Failure:%n"
                     + "One or more dependencies were identified with vulnerabilities that have a CVSS score greater then '%.1f': %s%n"
                     + "See the dependency-check report for more details.%n%n", failBuildOnCVSS, ids.toString());
             throw new MojoFailureException(msg);
         }
     }
 
     /**
      * Generates a warning message listing a summary of dependencies and their associated CPE and CVE entries.
      *
      * @param dependencies a list of dependency objects
      */
     private void showSummary(List<Dependency> dependencies) {
         final StringBuilder summary = new StringBuilder();
         for (Dependency d : dependencies) {
             boolean firstEntry = true;
             final StringBuilder ids = new StringBuilder();
             for (Vulnerability v : d.getVulnerabilities()) {
                 if (firstEntry) {
                     firstEntry = false;
                 } else {
                     ids.append(", ");
                 }
                 ids.append(v.getName());
             }
             if (ids.length() > 0) {
                 summary.append(d.getFileName()).append(" (");
                 firstEntry = true;
                 for (Identifier id : d.getIdentifiers()) {
                     if (firstEntry) {
                         firstEntry = false;
                     } else {
                         summary.append(", ");
                     }
                     summary.append(id.getValue());
                 }
                 summary.append(") : ").append(ids).append(NEW_LINE);
             }
         }
         if (summary.length() > 0) {
             final String msg = String.format("%n%n"
                     + "One or more dependencies were identified with known vulnerabilities:%n%n%s"
                     + "%n%nSee the dependency-check report for more details.%n%n", summary.toString());
             Logger.getLogger(DependencyCheckMojo.class.getName()).log(Level.WARNING, msg);
         }
     }
 }