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package net.minecraft.server;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.EOFException;
import java.io.IOException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
public abstract class Packet {
public static IntHashMap j = new IntHashMap();
private static Map a = new HashMap();
private static Set b = new HashSet();
private static Set action = new HashSet();
public final long timestamp = System.currentTimeMillis();
public boolean lowPriority = false;
public Packet() {}
static void a(int i, boolean flag, boolean flag1, Class oclass) {
if (j.b(i)) {
throw new IllegalArgumentException("Duplicate packet id:" + i);
} else if (a.containsKey(oclass)) {
throw new IllegalArgumentException("Duplicate packet class:" + oclass);
} else {
j.a(i, oclass);
a.put(oclass, Integer.valueOf(i));
if (flag) {
b.add(Integer.valueOf(i));
}
if (flag1) {
action.add(Integer.valueOf(i));
}
}
}
public static Packet a(int i) {
try {
Class oclass = (Class) j.a(i);
return oclass == null ? null : (Packet) oclass.newInstance();
} catch (Exception exception) {
exception.printStackTrace();
System.out.println("Skipping packet with id " + i);
return null;
}
}
public final int b() {
return ((Integer) a.get(this.getClass())).intValue();
}
// CraftBukkit - throws IOException
public static Packet a(DataInputStream datainputstream, boolean flag) throws IOException {
boolean flag1 = false;
Packet packet = null;
int i;
try {
i = datainputstream.read();
if (i == -1) {
return null;
}
if (flag && !action.contains(Integer.valueOf(i)) || !flag && !b.contains(Integer.valueOf(i))) {
throw new IOException("Bad packet id " + i);
}
packet = a(i);
if (packet == null) {
throw new IOException("Bad packet id " + i);
}
packet.a(datainputstream);
} catch (EOFException eofexception) {
System.out.println("Reached end of stream");
return null;
}
// CraftBukkit start
catch (java.net.SocketTimeoutException exception) {
System.out.println("Read timed out");
return null;
} catch (java.net.SocketException exception) {
System.out.println("Connection reset");
return null;
}
// CraftBukkit end
PacketCounter.a(i, (long) packet.a());
return packet;
}
// CraftBukkit - throws IOException
public static void a(Packet packet, DataOutputStream dataoutputstream) throws IOException {
dataoutputstream.write(packet.b());
packet.a(dataoutputstream);
}
// CraftBukkit - throws IOException
public static void a(String s, DataOutputStream dataoutputstream) throws IOException {
if (s.length() > 32767) {
throw new IOException("String too big");
} else {
dataoutputstream.writeShort(s.length());
dataoutputstream.writeChars(s);
}
}
// CraftBukkit - throws IOException
public static String a(DataInputStream datainputstream, int i) throws IOException {
short short1 = datainputstream.readShort();
if (short1 > i) {
throw new IOException("Received string length longer than maximum allowed (" + short1 + " > " + i + ")");
} else if (short1 < 0) {
throw new IOException("Received string length is less than zero! Weird string!");
} else {
StringBuilder stringbuilder = new StringBuilder();
for (int j = 0; j < short1; ++j) {
stringbuilder.append(datainputstream.readChar());
}
return stringbuilder.toString();
}
}
public abstract void a(DataInputStream datainputstream) throws IOException; // CraftBukkit
public abstract void a(DataOutputStream dataoutputstream) throws IOException; // CraftBukkit
public abstract void handle(NetHandler nethandler);
public abstract int a();
protected ItemStack b(DataInputStream datainputstream) throws IOException { // CraftBukkit
ItemStack itemstack = null;
short short1 = datainputstream.readShort();
if (short1 >= 0) {
byte b0 = datainputstream.readByte();
short short2 = datainputstream.readShort();
itemstack = new ItemStack(short1, b0, short2);
if (Item.byId[short1].g() || Item.byId[short1].i()) {
itemstack.tag = this.c(datainputstream);
}
}
return itemstack;
}
protected void a(ItemStack itemstack, DataOutputStream dataoutputstream) throws IOException { // CraftBukkit
if (itemstack == null) {
dataoutputstream.writeShort(-1);
} else {
dataoutputstream.writeShort(itemstack.id);
dataoutputstream.writeByte(itemstack.count);
dataoutputstream.writeShort(itemstack.getData());
if (itemstack.getItem().g() || itemstack.getItem().i()) {
this.a(itemstack.tag, dataoutputstream);
}
}
}
protected NBTTagCompound c(DataInputStream datainputstream) throws IOException { // CraftBukkit
short short1 = datainputstream.readShort();
if (short1 < 0) {
return null;
} else {
byte[] abyte = new byte[short1];
datainputstream.readFully(abyte);
return NBTCompressedStreamTools.a(abyte);
}
}
protected void a(NBTTagCompound nbttagcompound, DataOutputStream dataoutputstream) throws IOException { // CraftBukkit
if (nbttagcompound == null) {
dataoutputstream.writeShort(-1);
} else {
byte[] abyte = NBTCompressedStreamTools.a(nbttagcompound);
dataoutputstream.writeShort((short) abyte.length);
dataoutputstream.write(abyte);
}
}
static {
a(0, true, true, Packet0KeepAlive.class);
a(1, true, true, Packet1Login.class);
a(2, true, true, Packet2Handshake.class);
a(3, true, true, Packet3Chat.class);
a(4, true, false, Packet4UpdateTime.class);
a(5, true, false, Packet5EntityEquipment.class);
a(6, true, false, Packet6SpawnPosition.class);
a(7, false, true, Packet7UseEntity.class);
a(8, true, false, Packet8UpdateHealth.class);
a(9, true, true, Packet9Respawn.class);
a(10, true, true, Packet10Flying.class);
a(11, true, true, Packet11PlayerPosition.class);
a(12, true, true, Packet12PlayerLook.class);
a(13, true, true, Packet13PlayerLookMove.class);
a(14, false, true, Packet14BlockDig.class);
a(15, false, true, Packet15Place.class);
a(16, false, true, Packet16BlockItemSwitch.class);
a(17, true, false, Packet17EntityLocationAction.class);
a(18, true, true, Packet18ArmAnimation.class);
a(19, false, true, Packet19EntityAction.class);
a(20, true, false, Packet20NamedEntitySpawn.class);
a(21, true, false, Packet21PickupSpawn.class);
a(22, true, false, Packet22Collect.class);
a(23, true, false, Packet23VehicleSpawn.class);
a(24, true, false, Packet24MobSpawn.class);
a(25, true, false, Packet25EntityPainting.class);
a(26, true, false, Packet26AddExpOrb.class);
a(28, true, false, Packet28EntityVelocity.class);
a(29, true, false, Packet29DestroyEntity.class);
a(30, true, false, Packet30Entity.class);
a(31, true, false, Packet31RelEntityMove.class);
a(32, true, false, Packet32EntityLook.class);
a(33, true, false, Packet33RelEntityMoveLook.class);
a(34, true, false, Packet34EntityTeleport.class);
a(38, true, false, Packet38EntityStatus.class);
a(39, true, false, Packet39AttachEntity.class);
a(40, true, false, Packet40EntityMetadata.class);
a(41, true, false, Packet41MobEffect.class);
a(42, true, false, Packet42RemoveMobEffect.class);
a(43, true, false, Packet43SetExperience.class);
a(50, true, false, Packet50PreChunk.class);
a(51, true, false, Packet51MapChunk.class);
a(52, true, false, Packet52MultiBlockChange.class);
a(53, true, false, Packet53BlockChange.class);
a(54, true, false, Packet54PlayNoteBlock.class);
a(60, true, false, Packet60Explosion.class);
a(61, true, false, Packet61WorldEvent.class);
a(70, true, false, Packet70Bed.class);
a(71, true, false, Packet71Weather.class);
a(100, true, false, Packet100OpenWindow.class);
a(101, true, true, Packet101CloseWindow.class);
a(102, false, true, Packet102WindowClick.class);
a(103, true, false, Packet103SetSlot.class);
a(104, true, false, Packet104WindowItems.class);
a(105, true, false, Packet105CraftProgressBar.class);
a(106, true, true, Packet106Transaction.class);
a(107, true, true, Packet107SetCreativeSlot.class);
a(108, false, true, Packet108ButtonClick.class);
a(130, true, true, Packet130UpdateSign.class);
a(131, true, false, Packet131ItemData.class);
a(200, true, false, Packet200Statistic.class);
a(201, true, false, Packet201PlayerInfo.class);
a(250, true, true, Packet250CustomPayload.class);
a(254, false, true, Packet254GetInfo.class);
a(255, true, true, Packet255KickDisconnect.class);
}
}
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