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

package NET.worlds.scape;

import NET.worlds.console.Console;
import NET.worlds.console.Main;
import NET.worlds.console.MainCallback;
import NET.worlds.core.Std;
import NET.worlds.network.InfiniteWaitException;
import NET.worlds.network.ObjID;
import NET.worlds.network.PacketTooLargeException;
import NET.worlds.network.PropertyList;
import NET.worlds.network.PropertySetCmd;
import NET.worlds.network.WorldServer;
import NET.worlds.network.net2Property;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.text.MessageFormat;
import java.util.Enumeration;
import java.util.Vector;

public class Sharer extends SuperRoot implements MainCallback {
   private Vector<Attribute> attributes;
   private ByteArrayOutputStream bs = new ByteArrayOutputStream();
   private boolean shared = false;
   public static final int FIRST_TIME = 0;
   public static final int STATIC = 2;
   public static final int FORWARDED_STATIC = 3;
   public static final int DYNAMIC = 4;
   public static final int FORWARDED_DYNAMIC = 5;
   public static final int FORWARDED = 1;
   private boolean createdFromNet;
   Vector<Attribute> noteQ;
   Vector<Attribute> prepQ;
   Vector<Attribute> sendQ;
   private DynamicForwardAttribute dfa;
   int lastSendTime;
   private static Object classCookie = new Object();
   private Vector<Object> restoredAttributes = null;

   public Sharer() {
      this.attributes = new Vector<Attribute>(256);
      this.attributes.setSize(256);
   }

   public boolean isShared() {
      return this.shared;
   }

   private int getMaybeDefaultMode() {
      return ((WObject)this.getOwner()).getSharerMode();
   }

   public int getMode() {
      int mode = this.getMaybeDefaultMode();
      if (mode == 0) {
         this.setMode(mode);
      }

      return mode;
   }

   public void setMode(int mode) {
      WObject w = (WObject)this.getOwner();
      if (w instanceof Room) {
         mode = 2;
      } else if (this.createdFromNet) {
         mode = 4;
      } else if (mode == 2 || mode == 4) {
         mode = 0;
      }

      if (mode == 0) {
         mode = 3;
      }

      int oldMode = this.getMaybeDefaultMode();
      if (oldMode != mode) {
         this.unshare();
         w.setSharerMode(mode);
      }

      this.share();
   }

   public void createDynamicForwardedFromNet(DynamicForwardAttribute dfa) {
      assert !((WObject)this.getOwner()).isActive();

      this.dfa = dfa;
      ((WObject)this.getOwner()).setSharerMode(5);
   }

   public void createDynamicFromNet() {
      assert !((WObject)this.getOwner()).isActive() || this.createdFromNet;

      this.createdFromNet = true;
      ((WObject)this.getOwner()).setSharerMode(4);
   }

   public void adjustShare() {
      this.share();
   }

   private void share() {
      if (!this.shared) {
         int mode = this.getMaybeDefaultMode();
         switch (mode) {
            case 0:
               this.setMode(0);
            case 1:
            case 2:
            default:
               break;
            case 3:
               this.flushQueue();
               Enumeration<Attribute> e = this.getAttributes();

               while (e.hasMoreElements()) {
                  e.nextElement().addForwarding();
               }
               break;
            case 4:
               assert this.createdFromNet;
               break;
            case 5:
               if (this.dfa == null) {
                  this.flushQueue();
                  WObject w = (WObject)this.getOwner();
                  WObject terminal = w.getServed();
                  if (w.getSourceURL() != null && terminal != null) {
                     this.dfa = new DynamicForwardAttribute(-1);
                     if (terminal.getSharer().addAttribute(this.dfa) == -1) {
                        this.dfa = null;
                     } else {
                        this.dfa.connect(w);
                     }
                  }
               }
         }

         this.shared = true;
      }
   }

   private void unshare() {
      if (this.shared) {
         int mode = this.getMaybeDefaultMode();
         switch (mode) {
            case 2:
            case 4:
            default:
               break;
            case 3:
               Enumeration<Attribute> e = this.getAttributes();

               while (e.hasMoreElements()) {
                  e.nextElement().unforward();
               }
               break;
            case 5:
               if (this.dfa != null) {
                  this.dfa.unconnect();
                  this.dfa = null;
               }
         }

         this.shared = false;
      }
   }

   public int addAttribute(Attribute a) {
      this.setMode(this.getMaybeDefaultMode());
      a._attrID = this.getFreeAttrIDFor(a, a._attrID);
      if (a._attrID == -1) {
         return a._attrID;
      } else {
         try {
            this.add(a);
         } catch (ClassCastException var3) {
            Console.println(Console.message("Cant-attach") + var3);
            a._attrID = -1;
            return a._attrID;
         }

         this.attributes.setElementAt(a, a._attrID);
         if (this.getMaybeDefaultMode() == 3) {
            a.addForwarding();
         }

         return a._attrID;
      }
   }

   public boolean attrIDAvailable(int id) {
      return this.attributes.elementAt(id) == null;
   }

   private int getFreeAttrID(int id, int low, int high) {
      if (id >= 20 && id <= 255 && this.attrIDAvailable(id)) {
         return id;
      } else {
         int freeCount = this.countFree(low, high);
         if (freeCount == 0) {
            return -1;
         } else {
            int i;
            label42:
            while (true) {
               int pos = (int)(Math.random() * freeCount);
               i = low;

               while (true) {
                  if (this.attributes.elementAt(i) == null) {
                     if (--pos < 0) {
                        assert i <= high;

                        if (i != 150 && i != 155 && i != 160) {
                           break label42;
                        }
                        break;
                     }
                  }

                  i++;
               }
            }

            return i;
         }
      }
   }

   public int getFreeAttrIDFor(Attribute a, int id) {
      return a instanceof DynamicForwardAttribute ? this.getFreeAttrID(id, 210, 249) : this.getFreeAttrID(id, 100, 249);
   }

   public void removeAttribute(Attribute a) {
      a.detach();
      if (a.getOwner() == null) {
         this.attributes.setElementAt(null, a._attrID);
      }
   }

   public int resetAttributeID(Attribute a, int newID) {
      newID = this.getFreeAttrIDFor(a, newID);
      if (newID == -1) {
         return newID;
      } else {
         if (this.attributes.elementAt(newID) == null) {
            int oldID = a._attrID;
            this.attributes.setElementAt(a, newID);
            this.attributes.setElementAt(null, oldID);
            a._attrID = newID;
         }

         return newID;
      }
   }

   public void moveToSlot(WObject child, int newID) {
      if (child.isDynamic()) {
         Sharer s = child.getSharer();
         if (s.dfa != null) {
            this.resetAttributeID(s.dfa, newID);
         }
      }
   }

   public Enumeration<Attribute> getAttributes() {
      return this.getAttributesList().elements();
   }

   public Vector<Attribute> getAttributesList() {
      Vector<Attribute> v = new Vector<Attribute>(this.attributes.size());
      this.fillAttributesList(v);
      return v;
   }

   public void fillAttributesList(Vector<Attribute> v) {
      int end = this.attributes.size();

      for (int i = 0; i < end; i++) {
         Attribute a = this.attributes.elementAt(i);
         if (a != null) {
            v.addElement(a);
         }
      }
   }

   public Attribute getAttribute(int id) {
      try {
         return this.attributes.elementAt(id);
      } catch (ArrayIndexOutOfBoundsException var3) {
         return null;
      }
   }

   public boolean isEmpty() {
      return this.countFree(0, 255) == 256;
   }

   public int countFree(int low, int high) {
      int count = 0;

      for (int i = low; i <= high; i++) {
         if (this.attributes.elementAt(i) == null) {
            count++;
         }
      }

      return count;
   }

   @Override
   public void getChildren(DeepEnumeration d) {
      d.addChildVectorWithNulls(this.attributes);
   }

   public void noteChange(Attribute a, boolean sendTriggers) {
      assert Main.isMainThread();

      if (this.prepQ == null) {
         this.noteQ = new Vector<Attribute>();
         this.prepQ = new Vector<Attribute>();
         this.sendQ = new Vector<Attribute>();
      }

      if (sendTriggers && !this.noteQ.contains(a)) {
         if (this.noteQ.isEmpty() && this.prepQ.isEmpty() && this.sendQ.isEmpty()) {
            Main.register(this);
         }

         this.noteQ.addElement(a);
      }

      Attribute fa;
      if (this.getMode() == 3 && (fa = a.getForwardAttribute()) != null) {
         fa.noteChange();
      } else if (this.dfa != null) {
         this.dfa.noteChange();
      } else if (!this.prepQ.contains(a)) {
         if (this.noteQ.isEmpty() && this.prepQ.isEmpty() && this.sendQ.isEmpty()) {
            Main.register(this);
         }

         this.prepQ.addElement(a);
      }
   }

   private void prepQueue() {
      if (!this.noteQ.isEmpty()) {
         int end = this.noteQ.size();

         for (int i = 0; i < end; i++) {
            Attribute a = this.noteQ.elementAt(i);
            ValueEvent e = new ValueEvent(Std.getFastTime(), this.getOwner(), (WObject)this.getOwner(), a);
            a.trigger(e);
         }

         this.noteQ.removeAllElements();
      }

      int end = this.prepQ.size();

      for (int i = 0; i < end; i++) {
         Attribute a = this.prepQ.elementAt(i);
         this.bs.reset();

         try {
            a.generateNetData(new DataOutputStream(this.bs));
         } catch (IOException var5) {
            System.err.println(var5);
            throw new Error("Fatal in generateNetData");
         }

         a._outgoing = this.bs.toByteArray();
         if (Std.byteArraysEqual(a._outgoing, a._serverData)) {
            a._outgoing = null;
         } else if (!this.sendQ.contains(a)) {
            this.sendQ.addElement(a);
         }
      }

      this.prepQ.removeAllElements();
   }

   @Override
   public void mainCallback() {
      if (this.noteQ.isEmpty() && this.prepQ.isEmpty() && this.sendQ.isEmpty()) {
         Main.unregister(this);
      } else {
         int frameTime = Std.getFastTime();
         if (frameTime > this.lastSendTime + 250) {
            this.sendQueue();
            Main.unregister(this);
            this.lastSendTime = frameTime;
         }
      }
   }

   private void flushQueue() {
      if (this.prepQ != null) {
         this.prepQueue();
         if (!this.sendQ.isEmpty()) {
            int i = this.sendQ.size();

            while (--i >= 0) {
               Attribute a = this.sendQ.elementAt(i);
               a._waitingForFeedback = false;
               a._serverData = null;
               a._outgoing = null;
            }

            this.sendQ.removeAllElements();
         }
      }
   }

   private void sendQueue() {
      this.prepQueue();
      WorldServer rs = ((WObject)this.getOwner()).getServer();
      if (rs != null) {
         int end = this.sendQ.size();

         for (int i = 0; i < end; i++) {
            Attribute a = this.sendQ.elementAt(i);
            if (a._outgoing != null) {
               this.share(rs, a);
               a._serverData = a._outgoing;
               a._outgoing = null;
               a._waitingForFeedback = true;
            }
         }
      }

      this.sendQ.removeAllElements();
   }

   private void share(WorldServer ws, Attribute a) {
      SuperRoot w = this.getOwner();
      ObjID objID = null;
      if (w instanceof Room) {
         Pilot pilot = Pilot.getActive();
         if (pilot != null && pilot.getLastServedRoom() != w) {
            objID = new ObjID(((Room)w).getNetworkRoom().getLongID());
         } else {
            objID = new ObjID(253);
         }
      } else if (w instanceof Pilot) {
         objID = new ObjID(1);
      } else {
         objID = new ObjID(w.getName());
      }

      try {
         PropertyList propList = new PropertyList();
         propList.addProperty(new net2Property(a._attrID, a.getFlags(), a.getAccessFlags(), a._outgoing));
         ws.sendNetworkMsg(new PropertySetCmd(objID, propList));
      } catch (InfiniteWaitException var6) {
         Console.println(Console.message("Net-shutdown") + var6.toString());
      } catch (PacketTooLargeException var7) {
         assert false;
      }
   }

   public void setFromNetData(int attrID, byte[] data) {
      if (this.prepQ != null) {
         this.prepQueue();
      }

      Attribute a = this.getAttribute(attrID);
      if (a == null) {
         if ((this.getMode() & 1) != 0) {
            Object[] arguments = new Object[]{new String("" + attrID), new String(this.getOwner().getName())};
            Console.println(MessageFormat.format(Console.message("Unknown-attr"), arguments));
            return;
         }

         a = new DynamicForwardAttribute(attrID);
         this.addAttribute(a);
      }

      this.setData(a, data);
      if (!a.loaded) {
         a.loaded = true;
         if (a.callbacks != null && a.callbacks.size() > 0) {
            Enumeration<LoadedAttribute> e = a.callbacks.elements();

            while (e.hasMoreElements()) {
               LoadedAttribute la = e.nextElement();
               la.loadedAttribute(a, null);
            }

            a.callbacks.removeAllElements();
         }
      }
   }

   private void setData(Attribute a, byte[] data) {
      boolean matchesLastSent = Std.byteArraysEqual(data, a._serverData);
      if (a._waitingForFeedback) {
         if (!matchesLastSent) {
            return;
         }

         a._waitingForFeedback = false;
         if (data.length != 0 || a._outgoing != null) {
            return;
         }
      } else if (matchesLastSent) {
         return;
      }

      a._serverData = data;
      if (Std.byteArraysEqual(data, a._outgoing)) {
         a._outgoing = null;
      } else if (a._outgoing == null) {
         try {
            a.setFromNetData(new DataInputStream(new ByteArrayInputStream(data)), data.length);
         } catch (IOException var5) {
            var5.printStackTrace();
            Console.println(Console.message("Unrec-format") + a.getName());
         }

         ValueEvent e = new ValueEvent(Std.getFastTime(), this, (WObject)this.getOwner(), a);
         a.trigger(e);
      }
   }

   @Override
   public Object properties(int index, int offset, int mode, Object value) throws NoSuchPropertyException {
      throw new NoSuchPropertyException();
   }

   @Override
   public void saveState(Saver s) throws IOException {
      s.saveVersion(2, classCookie);
      super.saveState(s);
      s.saveVector(this.getAttributesList());
   }

   @Override
   public void restoreState(Restorer r) throws IOException, TooNewException {
      switch (r.restoreVersion(classCookie)) {
         case 0:
            this.setName(r.restoreString());
            int nSharedAtts = r.restoreInt();
            this.restoredAttributes = new Vector<Object>(nSharedAtts);

            for (int i = 0; i < nSharedAtts; i++) {
               this.restoredAttributes.addElement(r.restoreString());
            }
            break;
         case 1:
            this.setName(r.restoreString());
            this.restoredAttributes = r.restoreVector();
            break;
         case 2:
            super.restoreState(r);
            this.restoredAttributes = r.restoreVector();
            break;
         default:
            throw new TooNewException();
      }
   }

   public void ownerPostRestore() {
      int desiredMode = this.getMaybeDefaultMode();
      ((WObject)this.getOwner()).setSharerMode(0);
      this.setMode(desiredMode);
      Enumeration<Object> e = this.restoredAttributes.elements();

      while (e.hasMoreElements()) {
         Attribute a = (Attribute)e.nextElement();
         this.addAttribute(a);
      }

      this.restoredAttributes = null;
   }

   public void releaseAuxilaryData() {
      for (int i = 0; i < 256; i++) {
         Attribute a = this.attributes.elementAt(i);
         if (a != null) {
            a.releaseAuxilaryData();
         }
      }
   }
}