path: root/NET/worlds/scape/CDDBLookup.java

package NET.worlds.scape;

import NET.worlds.core.Hashtable;
import NET.worlds.network.URL;
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.NoSuchElementException;
import java.util.StringTokenizer;
import java.util.Vector;

public class CDDBLookup implements Runnable {
   public static final int STATUS_SERVERERROR = -3;
   public static final int STATUS_NOTUNIQUE = -2;
   public static final int STATUS_NOTFOUND = -1;
   public static final int STATUS_LOOKING = 0;
   public static final int STATUS_EXACTMATCH = 1;
   public static final int STATUS_CLOSEMATCH = 2;
   private static final boolean debug = false;
   private static final String lookupThreadName = "lookup";
   private static final String siteThreadName = "site";
   private static final String pkgName = "gamma";
   private static final String pkgVersion = "1.0";
   private static final int TIMEOUT = 3000;
   private static final String dbName = "home:cdcache.db";
   private static CDDBHost siteHost = new CDDBHost("cddb.cddb.com", 888);
   private static Vector sites;
   private static Object siteMutex = new Object();
   private static Object knownDisksMutex = new Object();
   private static int lastHostUsed = -1;
   private static Hashtable threadActivity = new Hashtable();
   private static Hashtable knownDisks;
   private static String userName;
   private static String hostName;
   private CDTrackInfo tracks;
   private String hash;
   private CDDBStatus status;
   private static final String discTitleKey = "DTITLE=";
   private static final String trackTitleKey = "TTITLE";

   public CDDBLookup(CDTrackInfo tracks) {
      if (userName == null) {
         userName = System.getProperty("user.name").replace(' ', '_');

         try {
            hostName = InetAddress.getLocalHost().getHostName();
         } catch (UnknownHostException var3) {
            hostName = "unknown";
         }
      }

      this.tracks = tracks;
      this.hash = CDDBHash.hashString(tracks);
      if ((this.status = this.dbLookup()) == null) {
         this.runThread("lookup");
      }
   }

   public String getHash() {
      return this.hash;
   }

   public CDDiskInfo getDiskInfo() {
      return this.getDiskInfo(false);
   }

   public synchronized CDDiskInfo getDiskInfo(boolean wait) {
      if (wait) {
         while (this.status == null) {
            try {
               this.wait();
            } catch (InterruptedException var3) {
            }
         }
      }

      return this.status != null ? this.status.getDiskInfo() : null;
   }

   public int getStatus() {
      return this.status != null ? this.status.getStatus() : 0;
   }

   @Override
   public void run() {
      String name = Thread.currentThread().getName();
      if (name.equals("lookup")) {
         this.maybeRunSiteThread();

         for (int i = 0; i < sites.size(); i++) {
            synchronized (this) {
               Thread t = this.runThread("" + i);

               try {
                  do {
                     this.wait(3000L);
                  } while (this.status == null && this.recentlyActive(t));
               } catch (InterruptedException var13) {
               }

               this.forgetThread(t);
               if (this.status != null) {
                  break;
               }

               if (i == sites.size() - 1) {
                  this.status = new CDDBStatus(-3);
                  this.notifyAll();
               }
            }
         }
      } else if (name.equals("site")) {
         Vector v = getSiteList();
         synchronized (siteMutex) {
            if (sites == null) {
               sites = v;
            }

            siteMutex.notifyAll();
         }
      } else {
         CDDBStatus newStatus = null;
         int hostIndex = 0;

         try {
            hostIndex = Integer.parseInt(name);
         } catch (NumberFormatException var11) {
         }

         CDDBHost host = null;
         synchronized (siteMutex) {
            host = (CDDBHost)sites.elementAt(hostIndex);
         }

         newStatus = this.findDiskInfo(host);
         synchronized (this) {
            if (this.status == null && newStatus != null) {
               this.status = newStatus;
               if (hostIndex != 0) {
                  synchronized (siteMutex) {
                     Object site = sites.elementAt(hostIndex);
                     sites.removeElementAt(hostIndex);
                     sites.insertElementAt(site, 0);
                  }
               }

               this.notifyAll();
            }
         }
      }
   }

   private static void addSite(Vector v, String host, int port) {
      v.addElement(new CDDBHost(host, port));
   }

   private static void defaultSites() {
      sites = new Vector();
      addSite(sites, "cddb.moonsoft.com", 888);
      addSite(sites, "cddb.moonsoft.com", 8880);
      addSite(sites, "cddb.celestial.com", 888);
      addSite(sites, "cddb.sonic.net", 888);
      addSite(sites, "sunsite.unc.edu", 888);
      addSite(sites, "cddb.netads.com", 888);
      addSite(sites, "cddb.mattdm.org", 888);
      addSite(sites, "cddb.dartmouth.edu", 888);
   }

   private static Vector getSiteList() {
      CDDBConnection con = null;

      try {
         con = new CDDBConnection(siteHost, false);
         con.command("sites").startsWith("210 ");
         Vector v = new Vector();

         String line;
         while ((line = con.readBody()) != null) {
            StringTokenizer tok = new StringTokenizer(line, " ");
            addSite(v, tok.nextToken(), Integer.parseInt(tok.nextToken()));
         }

         return v;
      } catch (IOException var10) {
      } catch (NumberFormatException var11) {
      } catch (NoSuchElementException var12) {
      } finally {
         if (con != null) {
            con.close();
         }
      }

      return null;
   }

   private CDDBStatus findDiskInfo(CDDBHost host) {
      CDDBConnection con = null;

      CDDBStatus var9;
      try {
         con = new CDDBConnection(host, false);
         if (!con.command("cddb hello " + userName + " " + hostName + " " + "gamma" + " " + "1.0").startsWith("200 ")) {
            return null;
         }

         String resp = con.command("cddb query " + CDDBHash.lookupString(this.tracks));
         StringTokenizer t = new StringTokenizer(resp, " ");
         String code = t.nextToken();
         if (code.equals("200")) {
            return this.dbAdd(new CDDBStatus(1, this.getCDDBEntry(con, t)));
         }

         if (code.equals("211")) {
            String line = con.readBody();
            int extra = 0;

            while (con.readBody() != null) {
               extra++;
            }

            if (extra != 0) {
               return this.dbAdd(new CDDBStatus(-2));
            }

            return this.dbAdd(new CDDBStatus(2, this.getCDDBEntry(con, new StringTokenizer(line, " "))));
         }

         if (!code.equals("202")) {
            return null;
         }

         var9 = new CDDBStatus(-1);
      } catch (IOException var13) {
         return null;
      } catch (NoSuchElementException var14) {
         return null;
      } finally {
         if (con != null) {
            con.close();
         }
      }

      return var9;
   }

   private Thread runThread(String name) {
      Thread t = new Thread(this, name);
      t.setDaemon(true);
      t.start();
      return t;
   }

   private void maybeRunSiteThread() {
      synchronized (siteMutex) {
         if (sites == null) {
            Thread t = this.runThread("site");

            try {
               do {
                  siteMutex.wait(3000L);
               } while (sites == null && this.recentlyActive(t));
            } catch (InterruptedException var4) {
            }

            this.forgetThread(t);
            if (sites == null) {
               defaultSites();
            }
         }
      }
   }

   private CDDiskInfo getCDDBEntry(CDDBConnection con, StringTokenizer t) {
      try {
         String cat = t.nextToken();
         String id = t.nextToken();
         if (con.command("cddb read " + cat + " " + id).startsWith("210 ")) {
            return this.parseCDDBEntry(cat, con);
         }
      } catch (IOException var5) {
      } catch (NoSuchElementException var6) {
      }

      return null;
   }

   private CDDiskInfo parseCDDBEntry(String category, CDDBConnection con) throws IOException {
      String artist = null;
      String title = null;
      String[] trackNames = new String[this.tracks.getNumTracks()];

      for (int i = 0; i < trackNames.length; i++) {
         trackNames[i] = "";
      }

      String line;
      while ((line = con.readBody()) != null) {
         if (line.startsWith("DTITLE=")) {
            line = line.substring("DTITLE=".length());
            int slashPos = line.indexOf(47);
            if (slashPos == -1) {
               artist = title = line.trim();
            } else {
               artist = line.substring(0, slashPos).trim();
               title = line.substring(slashPos + 1).trim();
            }
         } else if (line.startsWith("TTITLE")) {
            int eqIndex = line.indexOf(61);

            try {
               int trackNum = Integer.parseInt(line.substring("TTITLE".length(), eqIndex));
               trackNames[trackNum] = trackNames[trackNum] + line.substring(eqIndex + 1);
            } catch (NumberFormatException var9) {
            } catch (IndexOutOfBoundsException var10) {
            }
         }
      }

      return new CDDiskInfo(artist, title, category, trackNames);
   }

   static void markActivity() {
      threadActivity.put(Thread.currentThread(), new Long(System.currentTimeMillis()));
   }

   private boolean recentlyActive(Thread t) {
      Long l = (Long)threadActivity.get(t);
      return l != null ? System.currentTimeMillis() - l < 3000L : false;
   }

   private void forgetThread(Thread t) {
      threadActivity.remove(t);
   }

   private CDDBStatus dbAdd(CDDBStatus status) {
      synchronized (knownDisksMutex) {
         if (knownDisks.get(this.hash) == null) {
            knownDisks.put(this.hash, status);

            try {
               new Saver(new URL("home:cdcache.db")).save(knownDisks);
            } catch (Exception var4) {
            }
         }

         return status;
      }
   }

   private CDDBStatus dbLookup() {
      synchronized (knownDisksMutex) {
         if (knownDisks == null) {
            try {
               knownDisks = (Hashtable)new Restorer(new URL("home:cdcache.db")).restore();
            } catch (Exception var3) {
               knownDisks = new Hashtable();
            }
         }

         return (CDDBStatus)knownDisks.get(this.hash);
      }
   }
}