/*

  * This file is part of dependency-check-core.

  *

  * Dependency-check-core is free software: you can redistribute it and/or modify it

  * under the terms of the GNU General Public License as published by the Free

  * Software Foundation, either version 3 of the License, or (at your option) any

  * later version.

  *

  * Dependency-check-core is distributed in the hope that it will be useful, but

  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more

  * details.

  *

  * You should have received a copy of the GNU General Public License along with

  * dependency-check-core. If not, see http://www.gnu.org/licenses/.

  *

  * Copyright (c) 2013 Jeremy Long. All Rights Reserved.

  */

 package org.owasp.dependencycheck.utils;

 import java.io.IOException;

 import java.io.InputStream;

 import java.util.logging.FileHandler;

 import java.util.logging.Level;

 import java.util.logging.LogManager;

 import java.util.logging.Logger;

 import java.util.logging.SimpleFormatter;

 /**

  * A utility class to aide in the setup of the logging mechanism.

  *

  * @author Jeremy Long (jeremy.long@owasp.org)

  */

 public final class LogUtils {

     /**

      * Private constructor for a utility class.

      */

     private LogUtils() {

     }

     /**

      * Configures the logger for use by the application.

      *

      * @param in the input stream to read the log settings from

      * @param verboseLogFile the file path for the verbose log

      */

     public static void prepareLogger(InputStream in, String verboseLogFile) {

         try {

             LogManager.getLogManager().reset();

             LogManager.getLogManager().readConfiguration(in);

             if (verboseLogFile != null && !verboseLogFile.isEmpty()) {

                 verboseLoggingEnabled = true;

                 final Logger logger = Logger.getLogger("");

                 final FileHandler handler = new FileHandler(verboseLogFile, true);

                 handler.setFormatter(new SimpleFormatter());

                 handler.setLevel(Level.FINE);

                 handler.setFilter(new LogFilter());

                 logger.addHandler(handler);

                 logger.setLevel(Level.FINE);

             }

         } catch (IOException ex) {

             Logger.getLogger(LogUtils.class.getName()).log(Level.FINE, "IO Error preparing the logger", ex);

         } catch (SecurityException ex) {

             Logger.getLogger(LogUtils.class.getName()).log(Level.FINE, "Error preparing the logger", ex);

         } finally {

             if (in != null) {

                 try {

                     in.close();

                 } catch (Exception ex) {

                     Logger.getLogger(LogUtils.class.getName()).log(Level.FINEST, "Error closing resource stream", ex);

                 }

             }

         }

     }

     /**

      * Whether or not verbose logging is enabled.

      */

     private static boolean verboseLoggingEnabled = false;

     /**

      * Get the value of verboseLoggingEnabled.

      *

      * @return the value of verboseLoggingEnabled

      */

     public static boolean isVerboseLoggingEnabled() {

         return verboseLoggingEnabled;

     }

 }