Mirror von
https://github.com/PaperMC/Paper.git
synchronisiert 2024-11-18 05:50:04 +01:00
264 Zeilen
9.7 KiB
Java
264 Zeilen
9.7 KiB
Java
package net.minecraft.server;
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import java.io.DataInputStream;
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import java.io.DataOutputStream;
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import java.io.EOFException;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Set;
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public abstract class Packet {
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public static IntHashMap j = new IntHashMap();
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private static Map a = new HashMap();
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private static Set b = new HashSet();
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private static Set c = new HashSet();
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public final long timestamp = System.currentTimeMillis();
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public boolean l = false;
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public Packet() {}
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static void a(int i, boolean flag, boolean flag1, Class oclass) {
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if (j.b(i)) {
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throw new IllegalArgumentException("Duplicate packet id:" + i);
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} else if (a.containsKey(oclass)) {
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throw new IllegalArgumentException("Duplicate packet class:" + oclass);
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} else {
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j.a(i, oclass);
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a.put(oclass, Integer.valueOf(i));
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if (flag) {
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b.add(Integer.valueOf(i));
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}
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if (flag1) {
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c.add(Integer.valueOf(i));
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}
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}
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}
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public static Packet a(int i) {
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try {
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Class oclass = (Class) j.a(i);
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return oclass == null ? null : (Packet) oclass.newInstance();
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} catch (Exception exception) {
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exception.printStackTrace();
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System.out.println("Skipping packet with id " + i);
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return null;
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}
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}
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public final int b() {
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return ((Integer) a.get(this.getClass())).intValue();
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}
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// CraftBukkit - throws IOException
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public static Packet a(DataInputStream datainputstream, boolean flag) throws IOException {
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boolean flag1 = false;
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Packet packet = null;
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int i;
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try {
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i = datainputstream.read();
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if (i == -1) {
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return null;
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}
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if (flag && !c.contains(Integer.valueOf(i)) || !flag && !b.contains(Integer.valueOf(i))) {
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throw new IOException("Bad packet id " + i);
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}
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packet = a(i);
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if (packet == null) {
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throw new IOException("Bad packet id " + i);
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}
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packet.a(datainputstream);
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} catch (EOFException eofexception) {
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System.out.println("Reached end of stream");
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return null;
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}
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// CraftBukkit start
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catch (java.net.SocketTimeoutException exception) {
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System.out.println("Read timed out");
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return null;
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} catch (java.net.SocketException exception) {
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System.out.println("Connection reset");
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return null;
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}
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// CraftBukkit end
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PacketCounter.a(i, (long) packet.a());
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return packet;
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}
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// CraftBukkit - throws IOException
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public static void a(Packet packet, DataOutputStream dataoutputstream) throws IOException {
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dataoutputstream.write(packet.b());
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packet.a(dataoutputstream);
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}
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// CraftBukkit - throws IOException
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public static void a(String s, DataOutputStream dataoutputstream) throws IOException {
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if (s.length() > 32767) {
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throw new IOException("String too big");
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} else {
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dataoutputstream.writeShort(s.length());
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dataoutputstream.writeChars(s);
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}
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}
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// CraftBukkit - throws IOException
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public static String a(DataInputStream datainputstream, int i) throws IOException {
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short short1 = datainputstream.readShort();
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if (short1 > i) {
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throw new IOException("Received string length longer than maximum allowed (" + short1 + " > " + i + ")");
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} else if (short1 < 0) {
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throw new IOException("Received string length is less than zero! Weird string!");
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} else {
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StringBuilder stringbuilder = new StringBuilder();
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for (int j = 0; j < short1; ++j) {
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stringbuilder.append(datainputstream.readChar());
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}
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return stringbuilder.toString();
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}
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}
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public abstract void a(DataInputStream datainputstream) throws IOException; // CraftBukkit
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public abstract void a(DataOutputStream dataoutputstream) throws IOException; // CraftBukkit
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public abstract void a(NetHandler nethandler);
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public abstract int a();
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protected ItemStack b(DataInputStream datainputstream) throws IOException { // CraftBukkit
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ItemStack itemstack = null;
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short short1 = datainputstream.readShort();
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if (short1 >= 0) {
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byte b0 = datainputstream.readByte();
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short short2 = datainputstream.readShort();
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itemstack = new ItemStack(short1, b0, short2);
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if (Item.byId[short1].g()) {
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itemstack.tag = this.c(datainputstream);
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}
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}
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return itemstack;
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}
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protected void a(ItemStack itemstack, DataOutputStream dataoutputstream) throws IOException { // CraftBukkit
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if (itemstack == null) {
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dataoutputstream.writeShort(-1);
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} else {
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dataoutputstream.writeShort(itemstack.id);
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dataoutputstream.writeByte(itemstack.count);
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dataoutputstream.writeShort(itemstack.getData());
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if (itemstack.getItem().g()) {
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this.a(itemstack.tag, dataoutputstream);
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}
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}
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}
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protected NBTTagCompound c(DataInputStream datainputstream) throws IOException { // CraftBukkit
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short short1 = datainputstream.readShort();
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if (short1 < 0) {
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return null;
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} else {
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byte[] abyte = new byte[short1];
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datainputstream.readFully(abyte);
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return NBTCompressedStreamTools.a(abyte);
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}
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}
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protected void a(NBTTagCompound nbttagcompound, DataOutputStream dataoutputstream) throws IOException { // CraftBukkit
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if (nbttagcompound == null) {
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dataoutputstream.writeShort(-1);
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} else {
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byte[] abyte = NBTCompressedStreamTools.a(nbttagcompound);
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dataoutputstream.writeShort((short) abyte.length);
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dataoutputstream.write(abyte);
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}
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}
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static {
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a(0, true, true, Packet0KeepAlive.class);
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a(1, true, true, Packet1Login.class);
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a(2, true, true, Packet2Handshake.class);
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a(3, true, true, Packet3Chat.class);
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a(4, true, false, Packet4UpdateTime.class);
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a(5, true, false, Packet5EntityEquipment.class);
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a(6, true, false, Packet6SpawnPosition.class);
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a(7, false, true, Packet7UseEntity.class);
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a(8, true, false, Packet8UpdateHealth.class);
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a(9, true, true, Packet9Respawn.class);
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a(10, true, true, Packet10Flying.class);
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a(11, true, true, Packet11PlayerPosition.class);
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a(12, true, true, Packet12PlayerLook.class);
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a(13, true, true, Packet13PlayerLookMove.class);
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a(14, false, true, Packet14BlockDig.class);
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a(15, false, true, Packet15Place.class);
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a(16, false, true, Packet16BlockItemSwitch.class);
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a(17, true, false, Packet17EntityLocationAction.class);
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a(18, true, true, Packet18ArmAnimation.class);
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a(19, false, true, Packet19EntityAction.class);
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a(20, true, false, Packet20NamedEntitySpawn.class);
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a(21, true, false, Packet21PickupSpawn.class);
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a(22, true, false, Packet22Collect.class);
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a(23, true, false, Packet23VehicleSpawn.class);
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a(24, true, false, Packet24MobSpawn.class);
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a(25, true, false, Packet25EntityPainting.class);
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a(26, true, false, Packet26AddExpOrb.class);
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a(27, false, false, Packet27PlayerInput.class); // CraftBukkit - true -> false; disabled unused packet. TODO -- check if needed
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a(28, true, false, Packet28EntityVelocity.class);
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a(29, true, false, Packet29DestroyEntity.class);
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a(30, true, false, Packet30Entity.class);
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a(31, true, false, Packet31RelEntityMove.class);
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a(32, true, false, Packet32EntityLook.class);
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a(33, true, false, Packet33RelEntityMoveLook.class);
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a(34, true, false, Packet34EntityTeleport.class);
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a(38, true, false, Packet38EntityStatus.class);
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a(39, true, false, Packet39AttachEntity.class);
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a(40, true, false, Packet40EntityMetadata.class);
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a(41, true, false, Packet41MobEffect.class);
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a(42, true, false, Packet42RemoveMobEffect.class);
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a(43, true, false, Packet43SetExperience.class);
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a(50, true, false, Packet50PreChunk.class);
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a(51, true, false, Packet51MapChunk.class);
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a(52, true, false, Packet52MultiBlockChange.class);
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a(53, true, false, Packet53BlockChange.class);
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a(54, true, false, Packet54PlayNoteBlock.class);
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a(60, true, false, Packet60Explosion.class);
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a(61, true, false, Packet61WorldEvent.class);
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a(70, true, false, Packet70Bed.class);
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a(71, true, false, Packet71Weather.class);
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a(100, true, false, Packet100OpenWindow.class);
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a(101, true, true, Packet101CloseWindow.class);
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a(102, false, true, Packet102WindowClick.class);
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a(103, true, false, Packet103SetSlot.class);
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a(104, true, false, Packet104WindowItems.class);
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a(105, true, false, Packet105CraftProgressBar.class);
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a(106, true, true, Packet106Transaction.class);
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a(107, true, true, Packet107SetCreativeSlot.class);
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a(108, false, true, Packet108ButtonClick.class);
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a(130, true, true, Packet130UpdateSign.class);
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a(131, true, false, Packet131ItemData.class);
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a(200, true, false, Packet200Statistic.class);
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a(201, true, false, Packet201PlayerInfo.class);
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a(254, false, true, Packet254GetInfo.class);
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a(255, true, true, Packet255KickDisconnect.class);
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}
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}
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