Package net.pms

Source Code of net.pms.PMS

/*
* PS3 Media Server, for streaming any medias to your PS3.
* Copyright (C) 2008  A.Brochard
*
* This program 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; version 2
* of the License only.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

package net.pms;

import com.sun.jna.Platform;
import net.pms.configuration.Build;
import net.pms.configuration.PmsConfiguration;
import net.pms.configuration.RendererConfiguration;
import net.pms.dlna.DLNAMediaDatabase;
import net.pms.dlna.RootFolder;
import net.pms.dlna.virtual.MediaLibrary;
import net.pms.encoders.Player;
import net.pms.encoders.PlayerFactory;
import net.pms.external.ExternalFactory;
import net.pms.external.ExternalListener;
import net.pms.formats.Format;
import net.pms.formats.FormatFactory;
import net.pms.io.*;
import net.pms.logging.FrameAppender;
import net.pms.logging.LoggingConfigFileLoader;
import net.pms.network.HTTPServer;
import net.pms.network.ProxyServer;
import net.pms.network.UPNPHelper;
import net.pms.newgui.DummyFrame;
import net.pms.newgui.IFrame;
import net.pms.newgui.LooksFrame;
import net.pms.newgui.ProfileChooser;
import net.pms.update.AutoUpdater;
import net.pms.util.*;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.event.ConfigurationEvent;
import org.apache.commons.configuration.event.ConfigurationListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.swing.*;
import java.awt.*;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.PrintStream;
import java.net.BindException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.Map.Entry;
import java.util.logging.LogManager;

public class PMS {
  private static final String SCROLLBARS = "scrollbars";
  private static final String NATIVELOOK = "nativelook";
  private static final String CONSOLE = "console";
  private static final String NOCONSOLE = "noconsole";
  private static final String PROFILES = "profiles";
  private static Boolean isHeadless;

  /**
   * @deprecated The version has moved to the resources/project.properties file. Use {@link #getVersion()} instead.
   */
  @Deprecated
  public static String VERSION;

  public static final String AVS_SEPARATOR = "\1";

  // (innot): The logger used for all logging.
  private static final Logger logger = LoggerFactory.getLogger(PMS.class);

  // TODO(tcox):  This shouldn't be static
  private static PmsConfiguration configuration;

  /**
   * Universally Unique Identifier used in the UPnP server.
   */
  private String uuid;

  /**
   * Relative location of a context sensitive help page in the documentation
   * directory.
   */
  private static String helpPage = "index.html";

  /**
   * Returns a pointer to the PMS GUI's main window.
   * @return {@link net.pms.newgui.IFrame} Main PMS window.
   */
  public IFrame getFrame() {
    return frame;
  }

  /**
   * Returns the root folder for a given renderer. There could be the case
   * where a given media renderer needs a different root structure.
   *
   * @param renderer {@link net.pms.configuration.RendererConfiguration}
   * is the renderer for which to get the RootFolder structure. If <code>null</code>,
   * then the default renderer is used.
   * @return {@link net.pms.dlna.RootFolder} The root folder structure for a given renderer
   */
  public RootFolder getRootFolder(RendererConfiguration renderer) {
    // something to do here for multiple directories views for each renderer
    if (renderer == null) {
      renderer = RendererConfiguration.getDefaultConf();
    }

    return renderer.getRootFolder();
  }

  /**
   * Pointer to a running PMS server.
   */
  private static PMS instance = null;

  /**
   * @deprecated This field is not used and will be removed in the future.
   */
  @Deprecated
  public final static SimpleDateFormat sdfDate = new SimpleDateFormat("HH:mm:ss.SSS", Locale.US);

  /**
   * @deprecated This field is not used and will be removed in the future.
   */
  @Deprecated
  public final static SimpleDateFormat sdfHour = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss", Locale.US);

  /**
   * Array of {@link net.pms.configuration.RendererConfiguration} that have been found by PMS.
   */
  private final ArrayList<RendererConfiguration> foundRenderers = new ArrayList<RendererConfiguration>();

  /**
   * @deprecated Use {@link #setRendererFound(RendererConfiguration)} instead.
   */
  @Deprecated
  public void setRendererfound(RendererConfiguration renderer) {
    setRendererFound(renderer);
  }

  /**
   * Adds a {@link net.pms.configuration.RendererConfiguration} to the list of media renderers found.
   * The list is being used, for example, to give the user a graphical representation of the found
   * media renderers.
   *
   * @param renderer {@link net.pms.configuration.RendererConfiguration}
   * @since 1.82.0
   */
  public void setRendererFound(RendererConfiguration renderer) {
    if (!foundRenderers.contains(renderer) && !renderer.isFDSSDP()) {
      foundRenderers.add(renderer);
      frame.addRendererIcon(renderer.getRank(), renderer.getRendererName(), renderer.getRendererIcon());
      frame.setStatusCode(0, Messages.getString("PMS.18"), "apply-220.png");
    }
  }

  /**
   * HTTP server that serves the XML files needed by UPnP server and the media files.
   */
  private HTTPServer server;

  /**
   * User friendly name for the server.
   */
  private String serverName;

  // FIXME unused
  private ProxyServer proxyServer;

  public ProxyServer getProxy() {
    return proxyServer;
  }

  public ArrayList<Process> currentProcesses = new ArrayList<Process>();

  private PMS() { }

  /**
   * {@link net.pms.newgui.IFrame} object that represents the PMS GUI.
   */
  private IFrame frame;

  /**
   * Interface to Windows-specific functions, like Windows Registry. registry is set by {@link #init()}.
   * @see net.pms.io.WinUtils
   */
  private SystemUtils registry;

  /**
   * @see net.pms.io.WinUtils
   */
  public SystemUtils getRegistry() {
    return registry;
  }

  /**
   * Executes a new Process and creates a fork that waits for its results.
   * TODO Extend explanation on where this is being used.
   * @param name Symbolic name for the process to be launched, only used in the trace log
   * @param error (boolean) Set to true if you want PMS to add error messages to the trace pane
   * @param workDir (File) optional working directory to run the process in
   * @param params (array of Strings) array containing the command to call and its arguments
   * @return Returns true if the command exited as expected
   * @throws Exception TODO: Check which exceptions to use
   */
  private boolean checkProcessExistence(String name, boolean error, File workDir, String... params) throws Exception {
    logger.debug("launching: " + params[0]);

    try {
      ProcessBuilder pb = new ProcessBuilder(params);
      if (workDir != null) {
        pb.directory(workDir);
      }
      final Process process = pb.start();

      OutputTextConsumer stderrConsumer = new OutputTextConsumer(process.getErrorStream(), false);
      stderrConsumer.start();

      OutputTextConsumer outConsumer = new OutputTextConsumer(process.getInputStream(), false);
      outConsumer.start();

      Runnable r = new Runnable() {
        public void run() {
          ProcessUtil.waitFor(process);
        }
      };

      Thread checkThread = new Thread(r, "PMS Checker");
      checkThread.start();
      checkThread.join(60000);
      checkThread.interrupt();
      checkThread = null;

      // XXX no longer used
      if (params[0].equals("vlc") && stderrConsumer.getResults().get(0).startsWith("VLC")) {
        return true;
      }

      // XXX no longer used
      if (params[0].equals("ffmpeg") && stderrConsumer.getResults().get(0).startsWith("FF")) {
        return true;
      }

      int exit = process.exitValue();
      if (exit != 0) {
        if (error) {
          logger.info("[" + exit + "] Cannot launch " + name + " / Check the presence of " + params[0] + " ...");
        }
        return false;
      }
      return true;
    } catch (Exception e) {
      if (error) {
        logger.error("Cannot launch " + name + " / Check the presence of " + params[0] + " ...", e);
      }
      return false;
    }
  }

  /**
   * @see System#err
   */
  @SuppressWarnings("unused")
  private final PrintStream stderr = System.err;

  /**
   * Main resource database that supports search capabilities. Also known as media cache.
   * @see net.pms.dlna.DLNAMediaDatabase
   */
  private DLNAMediaDatabase database;

  private void initializeDatabase() {
    database = new DLNAMediaDatabase("medias"); // TODO: rename "medias" -> "cache"
    database.init(false);
  }

  /**
   * Used to get the database. Needed in the case of the Xbox 360, that requires a database.
   * for its queries.
   * @return (DLNAMediaDatabase) a reference to the database instance or <b>null</b> if one isn't defined
   * (e.g. if the cache is disabled).
   */
  public synchronized DLNAMediaDatabase getDatabase() {
    if (configuration.getUseCache()) {
      if (database == null) {
        initializeDatabase();
      }

      return database;
    }

    return null;
  }

  // helper method for displayBanner: return a file or directory's
  // permissions in the Unix ls style e.g.: "rw" (read-write),
  // "r-" (read-only) &c.
  private String getPathPermissions(String path) {
    String permissions;
    File file = new File(path);

    if (file.exists()) {
      if (file.isFile()) {
        permissions = String.format("%s%s",
          FileUtil.isFileReadable(file) ? "r" : "-",
          FileUtil.isFileWritable(file) ? "w" : "-"
        );
      } else {
        permissions = String.format("%s%s",
          FileUtil.isDirectoryReadable(file) ? "r" : "-",
          FileUtil.isDirectoryWritable(file) ? "w" : "-"
        );
      }
    } else {
      permissions = "file not found";
    }

    return permissions;
  }

  private void displayBanner() throws IOException {
    logger.info("Starting " + PropertiesUtil.getProjectProperties().get("project.name") + " " + getVersion());
    logger.info("by shagrath / 2008-2013");
    logger.info("http://ps3mediaserver.org");
    logger.info("https://github.com/ps3mediaserver/ps3mediaserver");
    logger.info("");

    String commitId = PropertiesUtil.getProjectProperties().get("git.commit.id");
    String commitTime = PropertiesUtil.getProjectProperties().get("git.commit.time");
    String shortCommitId = commitId.substring(09);

    logger.info("Build: " + shortCommitId + " (" + commitTime + ")");

    // Log system properties
    logSystemInfo();

    String cwd = new File("").getAbsolutePath();
    logger.info("Working directory: " + cwd);

    logger.info("Temp directory: " + configuration.getTempFolder());

    // Verify the java.io.tmpdir is writable; JNA requires it.
    // Note: the configured tempFolder has already been checked, but it
    // may differ from the java.io.tmpdir so double check to be sure.
    File javaTmpdir = new File(System.getProperty("java.io.tmpdir"));

    if (!FileUtil.isDirectoryWritable(javaTmpdir)) {
      logger.error("The Java temp directory \"{}\" is not writable for PMS!", javaTmpdir.getAbsolutePath());
      logger.error("Please make sure the directory is writable for user \"{}\"", System.getProperty("user.name"));
      throw new IOException("Cannot write to Java temp directory");
    }

    logger.info("Logging config file: {}", LoggingConfigFileLoader.getConfigFilePath());

    HashMap<String, String> lfps = LoggingConfigFileLoader.getLogFilePaths();

    // debug.log filename(s) and path(s)
    if (lfps != null && lfps.size() > 0) {
      if (lfps.size() == 1) {
        Entry<String, String> entry = lfps.entrySet().iterator().next();
        logger.info(String.format("%s: %s", entry.getKey(), entry.getValue()));
      } else {
        logger.info("Logging to multiple files:");
        Iterator<Entry<String, String>> logsIterator = lfps.entrySet().iterator();
        Entry<String, String> entry;
        while (logsIterator.hasNext()) {
          entry = logsIterator.next();
          logger.info(String.format("%s: %s", entry.getKey(), entry.getValue()));
        }
      }
    }

    String profilePath = configuration.getProfilePath();
    String profileDirectoryPath = configuration.getProfileDirectory();
    logger.info("");
    logger.info("Profile directory: {}", profileDirectoryPath);
    logger.info("Profile directory permissions: {}", getPathPermissions(profileDirectoryPath));
    logger.info("Profile path: {}", profilePath);
    logger.info("Profile permissions: {}", getPathPermissions(profilePath));
    logger.info("Profile name: {}", configuration.getProfileName());

    String webConfPath = configuration.getWebConfPath();
    logger.info("");
    logger.info("Web conf path: {}", webConfPath);
    logger.info("Web conf permissions: {}", getPathPermissions(webConfPath));

    logger.info("");
  }

  /**
   * Initialisation procedure for PMS.
   * @return true if the server has been initialized correctly. false if the server could
   * not be set to listen on the UPnP port.
   * @throws Exception
   */
  private boolean init() throws Exception {
    // The public VERSION field is deprecated.
    // This is a temporary fix for backwards compatibility
    VERSION = getVersion();

    // call this as early as possible
    displayBanner();

    AutoUpdater autoUpdater = null;

    if (configuration.isAutoUpdate()) {
      String serverURL = Build.getUpdateServerURL();
      autoUpdater = new AutoUpdater(serverURL, getVersion());
    }

    registry = createSystemUtils();

    if (!isHeadless()) {
      frame = new LooksFrame(autoUpdater, configuration);
    } else {
      logger.info("GUI environment not available");
      logger.info("Switching to console mode");
      frame = new DummyFrame();
    }

    /*
     * we're here:
     *
     *     main() -> createInstance() -> init()
     *
     * which means we haven't created the instance returned by get()
     * yet, so the frame appender can't access the frame in the
     * standard way i.e. PMS.get().getFrame(). we solve it by
     * inverting control ("don't call us; we'll call you") i.e.
     * we notify the appender when the frame is ready rather than
     * e.g. making getFrame() static and requiring the frame
     * appender to poll it.
     *
     * XXX an event bus (e.g. MBassador or Guava EventBus
     * (if they fix the memory-leak issue)) notification
     * would be cleaner and could support other lifecycle
     * notifications (see above).
     */
    FrameAppender.setFrame(frame);

    configuration.addConfigurationListener(new ConfigurationListener() {
      @Override
      public void configurationChanged(ConfigurationEvent event) {
        if ((!event.isBeforeUpdate())
            && PmsConfiguration.NEED_RELOAD_FLAGS.contains(event.getPropertyName())) {
          frame.setReloadable(true);
        }
      }
    });

    frame.setStatusCode(0, Messages.getString("PMS.130"), "connect_no-220.png");
    RendererConfiguration.loadRendererConfigurations(configuration);
    logger.info("Checking MPlayer font cache. It can take a minute or so.");
    checkProcessExistence("MPlayer", true, null, configuration.getMplayerPath(), "dummy");

    if (Platform.isWindows()) {
      checkProcessExistence("MPlayer", true, configuration.getTempFolder(), configuration.getMplayerPath(), "dummy");
    }

    logger.info("Done!");

    // check the existence of Vsfilter.dll
    if (registry.isAvis() && registry.getAvsPluginsDir() != null) {
      logger.info("Found AviSynth plugins dir: " + registry.getAvsPluginsDir().getAbsolutePath());
      File vsFilterdll = new File(registry.getAvsPluginsDir(), "VSFilter.dll");
      if (!vsFilterdll.exists()) {
        logger.info("VSFilter.dll is not in the AviSynth plugins directory. This can cause problems when trying to play subtitled videos with AviSynth");
      }
    }

    // Check if VLC is found
    String vlcVersion = registry.getVlcVersion();
    String vlcPath = registry.getVlcPath();

    if (vlcVersion != null && vlcPath != null) {
      logger.info("Found VLC version " + vlcVersion + " at: " + vlcPath);

      Version vlc = new Version(vlcVersion);
      Version requiredVersion = new Version("2.0.2");

      if (vlc.compareTo(requiredVersion) <= 0) {
        logger.error("Only VLC versions 2.0.2 and above are supported");
      }
    }

    // check if Kerio is installed
    if (registry.isKerioFirewall()) {
      logger.info("Detected Kerio firewall");
    }

    // force use of specific dvr ms muxer when it's installed in the right place
    File dvrsMsffmpegmuxer = new File("win32/dvrms/ffmpeg_MPGMUX.exe");
    if (dvrsMsffmpegmuxer.exists()) {
      configuration.setFfmpegAlternativePath(dvrsMsffmpegmuxer.getAbsolutePath());
    }

    // disable jaudiotagger logging
    LogManager.getLogManager().readConfiguration(new ByteArrayInputStream("org.jaudiotagger.level=OFF".getBytes()));

    // wrap System.err
    System.setErr(new PrintStream(new SystemErrWrapper(), true));

    server = new HTTPServer(configuration.getServerPort());

    /*
     * XXX: keep this here (i.e. after registerExtensions and before registerPlayers) so that plugins
     * can register custom players correctly (e.g. in the GUI) and/or add/replace custom formats
     *
     * XXX: if a plugin requires initialization/notification even earlier than
     * this, then a new external listener implementing a new callback should be added
     * e.g. StartupListener.registeredExtensions()
     */
    try {
      ExternalFactory.lookup();
    } catch (Exception e) {
      logger.error("Error loading plugins", e);
    }

    // a static block in Player doesn't work (i.e. is called too late).
    // this must always be called *after* the plugins have loaded.
    // here's as good a place as any
    Player.initializeFinalizeTranscoderArgsListeners();

    // Initialize a player factory to register all players
    PlayerFactory.initialize(configuration);

    // Instantiate listeners that require registered players.
    ExternalFactory.instantiateLateListeners();

    // Any plugin-defined players are now registered, create the GUI view.
    frame.addEngines();

    boolean binding = false;

    try {
      binding = server.start();
    } catch (BindException b) {
      logger.info("FATAL ERROR: Unable to bind on port: " + configuration.getServerPort() + ", because: " + b.getMessage());
      logger.info("Maybe another process is running or the hostname is wrong.");
    }

    new Thread("Connection Checker") {
      @Override
      public void run() {
        try {
          Thread.sleep(7000);
        } catch (InterruptedException e) { }

        if (foundRenderers.isEmpty()) {
          frame.setStatusCode(0, Messages.getString("PMS.0"), "messagebox_critical-220.png");
        } else {
          frame.setStatusCode(0, Messages.getString("PMS.18"), "apply-220.png");
        }
      }
    }.start();

    if (!binding) {
      return false;
    }

    // initialize the cache
    if (configuration.getUseCache()) {
      initializeDatabase(); // XXX: this must be done *before* new MediaLibrary -> new MediaLibraryFolder
      mediaLibrary = new MediaLibrary();
      logger.info("A tiny cache admin interface is available at: http://" + server.getHost() + ":" + server.getPort() + "/console/home");
    }

    // XXX: this must be called:
    //     a) *after* loading plugins i.e. plugins register root folders then RootFolder.discoverChildren adds them
    //     b) *after* mediaLibrary is initialized, if enabled (above)
    getRootFolder(RendererConfiguration.getDefaultConf());

    frame.serverReady();

    // UPNPHelper.sendByeBye();
    Runtime.getRuntime().addShutdownHook(new Thread("PMS Listeners Stopper") {
      @Override
      public void run() {
        try {
          for (ExternalListener l : ExternalFactory.getExternalListeners()) {
            l.shutdown();
          }
          UPNPHelper.shutDownListener();
          UPNPHelper.sendByeBye();
          logger.debug("Forcing shutdown of all active processes");
          for (Process p : currentProcesses) {
            try {
              p.exitValue();
            } catch (IllegalThreadStateException ise) {
              logger.trace("Forcing shutdown of process: " + p);
              ProcessUtil.destroy(p);
            }
          }
          get().getServer().stop();
          Thread.sleep(500);
        } catch (InterruptedException e) {
          logger.debug("Caught exception", e);
        }
      }
    });

    UPNPHelper.sendAlive();
    logger.trace("Waiting 250 milliseconds...");
    Thread.sleep(250);
    UPNPHelper.listen();

    return true;
  }

  private MediaLibrary mediaLibrary;

  /**
   * Returns the MediaLibrary used by PMS.
   * @return (MediaLibrary) Used mediaLibrary, if any. null if none is in use.
   */
  public MediaLibrary getLibrary() {
    return mediaLibrary;
  }

  private SystemUtils createSystemUtils() {
    if (Platform.isWindows()) {
      return new WinUtils();
    } else {
      if (Platform.isMac()) {
        return new MacSystemUtils();
      } else {
        if (Platform.isSolaris()) {
          return new SolarisUtils();
        } else {
          return new BasicSystemUtils();
        }
      }
    }
  }

  /**
   * Executes the needed commands in order to make PMS a Windows service that starts whenever the machine is started.
   * This function is called from the Network tab.
   * @return true if PMS could be installed as a Windows service.
   * @see net.pms.newgui.GeneralTab#build()
   */
  public boolean installWin32Service() {
    logger.info(Messages.getString("PMS.41"));
    String cmdArray[] = new String[]{ "win32/service/wrapper.exe", "-r", "wrapper.conf" };
    OutputParams output = new OutputParams(configuration);
    output.noexitcheck = true;
    ProcessWrapperImpl pwuninstall = new ProcessWrapperImpl(cmdArray, output);
    pwuninstall.runInSameThread();
    cmdArray = new String[]{ "win32/service/wrapper.exe", "-i", "wrapper.conf" };
    ProcessWrapperImpl pwInstall = new ProcessWrapperImpl(cmdArray, new OutputParams(configuration));
    pwInstall.runInSameThread();
    return pwInstall.isSuccess();
  }

  /**
   * @deprecated Use {@link #getFoldersConf()} instead.
   */
  @Deprecated
  public File[] getFoldersConf(boolean log) {
    return getFoldersConf();
  }

  /**
   * Transforms a comma-separated list of directory entries into an array of {@link String}.
   * Checks that the directory exists and is a valid directory.
   *
   * @return {@link java.io.File}[] Array of directories.
   * @throws java.io.IOException
   */
  public File[] getFoldersConf() {
    String folders = getConfiguration().getFolders();

    if (folders == null || folders.length() == 0) {
      return null;
    }

    ArrayList<File> directories = new ArrayList<File>();
    String[] foldersArray = folders.split(",");

    for (String folder : foldersArray) {
      // unescape embedded commas. note: backslashing isn't safe as it conflicts with
      // Windows path separators:
      // http://ps3mediaserver.org/forum/viewtopic.php?f=14&t=8883&start=250#p43520
      folder = folder.replaceAll("&comma;", ",");

      // this is called *way* too often
      // so log it so we can fix it.
      logger.info("Checking shared folder: " + folder);

      File file = new File(folder);

      if (file.exists()) {
        if (!file.isDirectory()) {
          logger.warn("The file " + folder + " is not a directory! Please remove it from your Shared folders list on the Navigation/Share Settings tab");
        }
      } else {
        logger.warn("The directory " + folder + " does not exist. Please remove it from your Shared folders list on the Navigation/Share Settings tab");
      }

      // add the file even if there are problems so that the user can update the shared folders as required.
      directories.add(file);
    }

    File f[] = new File[directories.size()];
    directories.toArray(f);
    return f;
  }

  /**
   * Restarts the server. The trigger is either a button on the main PMS window or via
   * an action item.
   * @throws java.io.IOException
   */
  // XXX: don't try to optimize this by reusing the same server instance.
  // see the comment above HTTPServer.stop()
  public void reset() {
    TaskRunner.getInstance().submitNamed("restart", true, new Runnable() {
      public void run() {
        try {
          logger.trace("Waiting 1 second...");
          UPNPHelper.sendByeBye();
          server.stop();
          server = null;
          RendererConfiguration.resetAllRenderers();
          try {
            Thread.sleep(1000);
          } catch (InterruptedException e) {
            logger.trace("Caught exception", e);
          }
          server = new HTTPServer(configuration.getServerPort());
          server.start();
          UPNPHelper.sendAlive();
          frame.setReloadable(false);
        } catch (IOException e) {
          logger.error("error during restart :" +e.getMessage(), e);
        }
      }
    });
  }

  // Cannot remove these methods because of backwards compatibility;
  // none of the PMS code uses it, but some plugins still do.

  /**
   * @deprecated Use the SLF4J logging API instead.
   * Adds a message to the debug stream, or {@link System#out} in case the
   * debug stream has not been set up yet.
   * @param msg {@link String} to be added to the debug stream.
   */
  @Deprecated
  public static void debug(String msg) {
    logger.trace(msg);
  }

  /**
   * @deprecated Use the SLF4J logging API instead.
   * Adds a message to the info stream.
   * @param msg {@link String} to be added to the info stream.
   */
  @Deprecated
  public static void info(String msg) {
    logger.debug(msg);
  }

  /**
   * @deprecated Use the SLF4J logging API instead.
   * Adds a message to the minimal stream. This stream is also
   * shown in the Trace tab.
   * @param msg {@link String} to be added to the minimal stream.
   */
  @Deprecated
  public static void minimal(String msg) {
    logger.info(msg);
  }

  /**
   * @deprecated Use the SLF4J logging API instead.
   * Adds a message to the error stream. This is usually called by
   * statements that are in a try/catch block.
   * @param msg {@link String} to be added to the error stream
   * @param t {@link Throwable} comes from an {@link Exception}
   */
  @Deprecated
  public static void error(String msg, Throwable t) {
    logger.error(msg, t);
  }

  /**
   * Creates a new random {@link #uuid}. These are used to uniquely identify the server to renderers (i.e.
   * renderers treat multiple servers with the same UUID as the same server).
   * @return {@link String} with an Universally Unique Identifier.
   */
  // XXX don't use the MAC address to seed the UUID as it breaks multiple profiles:
  // http://www.ps3mediaserver.org/forum/viewtopic.php?f=6&p=75542#p75542
  public synchronized String usn() {
    if (uuid == null) {
      // retrieve UUID from configuration
      uuid = getConfiguration().getUuid();

      if (uuid == null) {
        uuid = UUID.randomUUID().toString();
        logger.info("Generated new random UUID: {}", uuid);

        // save the newly-generated UUID
        getConfiguration().setUuid(uuid);

        try {
          getConfiguration().save();
        } catch (ConfigurationException e) {
          logger.error("Failed to save configuration with new UUID", e);
        }
      }

      logger.info("Using the following UUID configured in PMS.conf: {}", uuid);
    }

    return "uuid:" + uuid;
  }

  /**
   * Returns the user friendly name of the UPnP server.
   * @return {@link String} with the user friendly name.
   */
  public String getServerName() {
    if (serverName == null) {
      StringBuilder sb = new StringBuilder();
      sb.append(System.getProperty("os.name").replace(" ", "_"));
      sb.append("-");
      sb.append(System.getProperty("os.arch").replace(" ", "_"));
      sb.append("-");
      sb.append(System.getProperty("os.version").replace(" ", "_"));
      sb.append(", UPnP/1.0, PMS/" + getVersion());
      serverName = sb.toString();
    }

    return serverName;
  }

  /**
   * Returns the PMS instance.
   * @return {@link net.pms.PMS}
   */
  public static PMS get() {
    // XXX when PMS is run as an application, the instance is initialized via the createInstance call in main().
    // However, plugin tests may need access to a PMS instance without going
    // to the trouble of launching the PMS application, so we provide a fallback
    // initialization here. Either way, createInstance() should only be called once (see below)
    if (instance == null) {
      createInstance();
    }

    return instance;
  }

  private synchronized static void createInstance() {
    assert instance == null; // this should only be called once
    instance = new PMS();

    try {
      if (instance.init()) {
        logger.info("The server should now appear on your renderer");
      } else {
        logger.error("A serious error occurred during PMS init");
      }
    } catch (Exception e) {
      logger.error("A serious error occurred during PMS init", e);
    }
  }

  /**
   * @deprecated Use {@link net.pms.formats.FormatFactory#getAssociatedFormat(String)}
   * instead.
   *
   * @param filename
   * @return The format.
   */
  @Deprecated
  public Format getAssociatedFormat(String filename) {
    return FormatFactory.getAssociatedFormat(filename);
  }

  public static void main(String args[]) throws IOException, ConfigurationException {
    boolean displayProfileChooser = false;

    // FIXME (breaking change): use a standard argument
    // format (and a standard argument processor) e.g.
    // --console, --scrollbars &c.
    if (args.length > 0) {
      for (int a = 0; a < args.length; a++) {
        if (args[a].equals(CONSOLE)) {
          System.setProperty(CONSOLE, Boolean.toString(true));
        } else if (args[a].equals(NATIVELOOK)) {
          System.setProperty(NATIVELOOK, Boolean.toString(true));
        } else if (args[a].equals(SCROLLBARS)) {
          System.setProperty(SCROLLBARS, Boolean.toString(true));
        } else if (args[a].equals(NOCONSOLE)) {
          System.setProperty(NOCONSOLE, Boolean.toString(true));
        } else if (args[a].equals(PROFILES)) {
          displayProfileChooser = true;
        }
      }
    }

    try {
      Toolkit.getDefaultToolkit();

      if (isHeadless()) {
        if (System.getProperty(NOCONSOLE) == null) {
          System.setProperty(CONSOLE, Boolean.toString(true));
        }
      }
    } catch (Throwable t) {
      System.err.println("Toolkit error: " + t.getClass().getName() + ": " + t.getMessage());

      if (System.getProperty(NOCONSOLE) == null) {
        System.setProperty(CONSOLE, Boolean.toString(true));
      }
    }

    if (!isHeadless() && displayProfileChooser) {
      ProfileChooser.display();
    }

    try {
      setConfiguration(new PmsConfiguration());
      assert getConfiguration() != null;

      // Load the (optional) logback config file.
      // This has to be called after 'new PmsConfiguration'
      // as the logging starts immediately and some filters
      // need the PmsConfiguration.
      // XXX not sure this is (still) true: the only filter
      // we use is ch.qos.logback.classic.filter.ThresholdFilter
      LoggingConfigFileLoader.load();

      // create the PMS instance returned by get()
      createInstance(); // calls new() then init()
    } catch (Throwable t) {
      String errorMessage = String.format(
        "Configuration error: %s: %s",
        t.getClass().getName(),
        t.getMessage()
      );

      System.err.println(errorMessage);
      t.printStackTrace();

      if (!isHeadless() && instance != null) {
        JOptionPane.showMessageDialog(
          ((JFrame) (SwingUtilities.getWindowAncestor((Component) instance.getFrame()))),
          errorMessage,
          Messages.getString("PMS.42"),
          JOptionPane.ERROR_MESSAGE
        );
      }
    }
  }

  public HTTPServer getServer() {
    return server;
  }

  public void save() {
    try {
      configuration.save();
    } catch (ConfigurationException e) {
      logger.error("Could not save configuration", e);
    }
  }

  public void storeFileInCache(File file, int formatType) {
    if (getConfiguration().getUseCache()
        && !getDatabase().isDataExists(file.getAbsolutePath(), file.lastModified())) {

      getDatabase().insertData(file.getAbsolutePath(), file.lastModified(), formatType, null);
    }
  }

  /**
   * Retrieves the {@link net.pms.configuration.PmsConfiguration PmsConfiguration} object
   * that contains all configured settings for PMS. The object provides getters for all
   * configurable PMS settings.
   *
   * @return The configuration object
   */
  public static PmsConfiguration getConfiguration() {
    return configuration;
  }

  /**
   * Sets the {@link net.pms.configuration.PmsConfiguration PmsConfiguration} object
   * that contains all configured settings for PMS. The object provides getters for all
   * configurable PMS settings.
   *
   * @param conf The configuration object.
   */
  public static void setConfiguration(PmsConfiguration conf) {
    configuration = conf;
  }

  /**
   * Returns the project version for PMS.
   *
   * @return The project version.
   */
  public static String getVersion() {
    return PropertiesUtil.getProjectProperties().get("project.version");
  }

  /**
   * Log system properties identifying Java, the OS and encoding and log
   * warnings where appropriate.
   */
  private void logSystemInfo() {
    long memoryInMB = Runtime.getRuntime().maxMemory() / 1048576;

    logger.info("Java: " + System.getProperty("java.vm.name") + " " + System.getProperty("java.version") + " by " + System.getProperty("java.vendor"));
    logger.info("OS: " + System.getProperty("os.name") + " " + System.getProperty("os.arch") + " " + System.getProperty("os.version"));
    logger.info("Encoding: " + System.getProperty("file.encoding"));
    logger.info("Memory: " + memoryInMB + " " + Messages.getString("StatusTab.12"));
    logger.info("");

    if (Platform.isMac()) {
      // The binaries shipped with the Mac OS X version of PMS are being
      // compiled against specific OS versions, making them incompatible
      // with older versions. Warn the user about this when necessary.
      String osVersion = System.getProperty("os.version");

      // Split takes a regular expression, so escape the dot.
      String[] versionNumbers = osVersion.split("\\.");

      if (versionNumbers.length > 1) {
        try {
          int osVersionMinor = Integer.parseInt(versionNumbers[1]);

          if (osVersionMinor < 6) {
            logger.warn("-----------------------------------------------------------------");
            logger.warn("WARNING!");
            logger.warn("PMS ships with binaries compiled for Mac OS X 10.6 or higher.");
            logger.warn("You are running an older version of Mac OS X so PMS may not work!");
            logger.warn("More information in the FAQ:");
            logger.warn("http://www.ps3mediaserver.org/forum/viewtopic.php?f=6&t=3507&p=66371#p66371");
            logger.warn("-----------------------------------------------------------------");
            logger.warn("");
          }
        } catch (NumberFormatException e) {
          logger.debug("Cannot parse minor os.version number");
        }
      }
    }
  }

  /**
   * Check if server is running in headless (console) mode.
   *
   * @return true if server is running in headless (console) mode, false otherwise
   */
  public static synchronized boolean isHeadless() {
    if (isHeadless == null) {
      if (System.getProperty(CONSOLE) != null) {
        isHeadless = true;
      } else {
        try {
          javax.swing.JDialog d = new javax.swing.JDialog();
          d.dispose();
          isHeadless = false;
        } catch (Throwable throwable) {
          isHeadless = true;
        }
      }
    }

    return isHeadless;
  }

  /**
   * Sets the relative URL of a context sensitive help page located in the
   * documentation directory.
   *
   * @param page The help page.
   */
  public static void setHelpPage(String page) {
    helpPage = page;
  }

  /**
   * Returns the relative URL of a context sensitive help page in the
   * documentation directory.
   *
   * @return The help page.
   */
  public static String getHelpPage() {
    return helpPage;
  }
}
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