Paper/CraftBukkit-Patches/0038-Snapshot-Protocol.patch

From 96d4fdc902484c9a4762423c931cd53f85f500d7 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Fri, 19 Apr 2013 19:13:42 +1000
Subject: [PATCH] Snapshot Protocol


diff --git a/src/main/java/net/minecraft/server/ItemStack.java b/src/main/java/net/minecraft/server/ItemStack.java
index cd032ae..14da2b9 100644
--- a/src/main/java/net/minecraft/server/ItemStack.java
+++ b/src/main/java/net/minecraft/server/ItemStack.java
@@ -41,6 +41,7 @@ public final class ItemStack {
         this.id = i;
         this.count = j;
         // CraftBukkit start - Pass to setData to do filtering
+        if (org.bukkit.craftbukkit.Spigot.snapshotSupport && this.id >= 170 && this.id <= 171) this.id = 0; // Spigot
         this.setData(k);
         //if (this.damage < 0) {
         //    this.damage = 0;
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index a1d77ad..ad6cc57 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -753,7 +753,7 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IMo
     }
 
     public String getVersion() {
-        return "1.5.1";
+      return (org.bukkit.craftbukkit.Spigot.snapshotSupport) ? org.bukkit.craftbukkit.Spigot.snapshotVersion : "1.5.1";
     }
 
     public int y() {
diff --git a/src/main/java/net/minecraft/server/Packet19EntityAction.java b/src/main/java/net/minecraft/server/Packet19EntityAction.java
new file mode 100644
index 0000000..259dcbb
--- /dev/null
+++ b/src/main/java/net/minecraft/server/Packet19EntityAction.java
@@ -0,0 +1,32 @@
+package net.minecraft.server;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+public class Packet19EntityAction extends Packet {
+
+    public int a;
+    public int animation;
+
+    public Packet19EntityAction() {}
+
+    public void a(DataInputStream datainputstream) throws IOException {
+        this.a = datainputstream.readInt();
+        this.animation = datainputstream.readByte();
+        if (org.bukkit.craftbukkit.Spigot.snapshotSupport) datainputstream.readInt(); // Spigot
+    }
+
+    public void a(DataOutputStream dataoutputstream) throws IOException {
+        dataoutputstream.writeInt(this.a);
+        dataoutputstream.writeByte(this.animation);
+    }
+
+    public void handle(Connection connection) {
+        connection.a(this);
+    }
+
+    public int a() {
+        return 5;
+    }
+}
diff --git a/src/main/java/net/minecraft/server/Packet202Abilities.java b/src/main/java/net/minecraft/server/Packet202Abilities.java
new file mode 100644
index 0000000..2a2dad5
--- /dev/null
+++ b/src/main/java/net/minecraft/server/Packet202Abilities.java
@@ -0,0 +1,131 @@
+package net.minecraft.server;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+public class Packet202Abilities extends Packet {
+
+    private boolean a = false;
+    private boolean b = false;
+    private boolean c = false;
+    private boolean d = false;
+    private float e;
+    private float f;
+
+    public Packet202Abilities() {}
+
+    public Packet202Abilities(PlayerAbilities playerabilities) {
+        this.a(playerabilities.isInvulnerable);
+        this.b(playerabilities.isFlying);
+        this.c(playerabilities.canFly);
+        this.d(playerabilities.canInstantlyBuild);
+        this.a(playerabilities.a());
+        this.b(playerabilities.b());
+    }
+
+    public void a(DataInputStream datainputstream) throws IOException {
+        byte b0 = datainputstream.readByte();
+
+        this.a((b0 & 1) > 0);
+        this.b((b0 & 2) > 0);
+        this.c((b0 & 4) > 0);
+        this.d((b0 & 8) > 0);
+        // Spigot start
+        if (org.bukkit.craftbukkit.Spigot.snapshotSupport) {
+            this.a(datainputstream.readFloat());
+            this.b(datainputstream.readFloat());
+        } else {
+            this.a((float) datainputstream.readByte() / 255.0F);
+            this.b((float) datainputstream.readByte() / 255.0F);
+        }
+        // Spigot end
+    }
+
+    public void a(DataOutputStream dataoutputstream) throws IOException {
+        byte b0 = 0;
+
+        if (this.d()) {
+            b0 = (byte) (b0 | 1);
+        }
+
+        if (this.f()) {
+            b0 = (byte) (b0 | 2);
+        }
+
+        if (this.g()) {
+            b0 = (byte) (b0 | 4);
+        }
+
+        if (this.h()) {
+            b0 = (byte) (b0 | 8);
+        }
+
+        dataoutputstream.writeByte(b0);
+        // Spigot start
+        if (org.bukkit.craftbukkit.Spigot.snapshotSupport) {
+            dataoutputstream.writeFloat(this.e);
+            dataoutputstream.writeFloat(this.f);
+        } else {
+            dataoutputstream.writeByte((int) (this.e * 255.0F));
+            dataoutputstream.writeByte((int) (this.f * 255.0F));
+        }
+        // Spigot end
+    }
+
+    public void handle(Connection connection) {
+        connection.a(this);
+    }
+
+    public int a() {
+        return 2;
+    }
+
+    public boolean d() {
+        return this.a;
+    }
+
+    public void a(boolean flag) {
+        this.a = flag;
+    }
+
+    public boolean f() {
+        return this.b;
+    }
+
+    public void b(boolean flag) {
+        this.b = flag;
+    }
+
+    public boolean g() {
+        return this.c;
+    }
+
+    public void c(boolean flag) {
+        this.c = flag;
+    }
+
+    public boolean h() {
+        return this.d;
+    }
+
+    public void d(boolean flag) {
+        this.d = flag;
+    }
+
+    public void a(float f) {
+        this.e = f;
+    }
+
+    public void b(float f) {
+        this.f = f;
+    }
+
+    public boolean e() {
+        return true;
+    }
+
+    public boolean a(Packet packet) {
+        return true;
+    }
+}
diff --git a/src/main/java/net/minecraft/server/Packet39AttachEntity.java b/src/main/java/net/minecraft/server/Packet39AttachEntity.java
new file mode 100644
index 0000000..a728ace
--- /dev/null
+++ b/src/main/java/net/minecraft/server/Packet39AttachEntity.java
@@ -0,0 +1,47 @@
+package net.minecraft.server;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+public class Packet39AttachEntity extends Packet {
+
+    public int a;
+    public int b;
+
+    public Packet39AttachEntity() {}
+
+    public Packet39AttachEntity(Entity entity, Entity entity1) {
+        this.a = entity.id;
+        this.b = entity1 != null ? entity1.id : -1;
+    }
+
+    public int a() {
+        return 8;
+    }
+
+    public void a(DataInputStream datainputstream) throws IOException {
+        this.a = datainputstream.readInt();
+        this.b = datainputstream.readInt();
+    }
+
+    public void a(DataOutputStream dataoutputstream) throws IOException {
+        dataoutputstream.writeInt(this.a);
+        dataoutputstream.writeInt(this.b);
+        if (org.bukkit.craftbukkit.Spigot.snapshotSupport) dataoutputstream.writeBoolean(false); // Spigot
+    }
+
+    public void handle(Connection connection) {
+        connection.a(this);
+    }
+
+    public boolean e() {
+        return true;
+    }
+
+    public boolean a(Packet packet) {
+        Packet39AttachEntity packet39attachentity = (Packet39AttachEntity) packet;
+
+        return packet39attachentity.a == this.a;
+    }
+}
diff --git a/src/main/java/net/minecraft/server/Packet8UpdateHealth.java b/src/main/java/net/minecraft/server/Packet8UpdateHealth.java
new file mode 100644
index 0000000..bbfbb88
--- /dev/null
+++ b/src/main/java/net/minecraft/server/Packet8UpdateHealth.java
@@ -0,0 +1,52 @@
+package net.minecraft.server;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+public class Packet8UpdateHealth extends Packet {
+
+    public float a;
+    public int b;
+    public float c;
+
+    public Packet8UpdateHealth() {}
+
+    public Packet8UpdateHealth(int i, int j, float f) {
+        this.a = i;
+        this.b = j;
+        this.c = f;
+    }
+
+    public void a(DataInputStream datainputstream) throws IOException {
+        this.a = datainputstream.readShort();
+        this.b = datainputstream.readShort();
+        this.c = datainputstream.readFloat();
+    }
+
+    public void a(DataOutputStream dataoutputstream) throws IOException {
+        if (org.bukkit.craftbukkit.Spigot.snapshotSupport) {
+            dataoutputstream.writeFloat(this.a);
+        } else {
+            dataoutputstream.writeShort((short) this.a);
+        }
+        dataoutputstream.writeShort(this.b);
+        dataoutputstream.writeFloat(this.c);
+    }
+
+    public void handle(Connection connection) {
+        connection.a(this);
+    }
+
+    public int a() {
+        return 8;
+    }
+
+    public boolean e() {
+        return true;
+    }
+
+    public boolean a(Packet packet) {
+        return true;
+    }
+}
diff --git a/src/main/java/net/minecraft/server/PendingConnection.java b/src/main/java/net/minecraft/server/PendingConnection.java
index 72fb172..9e5035a 100644
--- a/src/main/java/net/minecraft/server/PendingConnection.java
+++ b/src/main/java/net/minecraft/server/PendingConnection.java
@@ -77,8 +77,8 @@ public class PendingConnection extends Connection {
         } else {
             PublicKey publickey = this.server.F().getPublic();
 
-            if (packet2handshake.d() != 60) {
-                if (packet2handshake.d() > 60) {
+            if (packet2handshake.d() != ((org.bukkit.craftbukkit.Spigot.snapshotSupport) ? org.bukkit.craftbukkit.Spigot.snapshotProtocolVersion : 60)) {
+                if (packet2handshake.d() > ((org.bukkit.craftbukkit.Spigot.snapshotSupport) ? org.bukkit.craftbukkit.Spigot.snapshotProtocolVersion : 60)) {
                     this.disconnect("Outdated server!");
                 } else {
                     this.disconnect("Outdated client!");
@@ -153,7 +153,7 @@ public class PendingConnection extends Connection {
 
             if (true) {
                 // CraftBukkit start - Fix decompile issues, don't create a list from an array
-                Object[] list = new Object[] { 1, 60, this.server.getVersion(), pingEvent.getMotd(), playerlist.getPlayerCount(), pingEvent.getMaxPlayers() };
+                Object[] list = new Object[]{1, ((org.bukkit.craftbukkit.Spigot.snapshotSupport) ? org.bukkit.craftbukkit.Spigot.snapshotProtocolVersion : 60), this.server.getVersion(), pingEvent.getMotd(), playerlist.getPlayerCount(), pingEvent.getMaxPlayers()};
 
                 for (Object object : list) {
                     if (s == null) {
diff --git a/src/main/java/org/bukkit/craftbukkit/Spigot.java b/src/main/java/org/bukkit/craftbukkit/Spigot.java
index 1f61d23..fcdad66 100644
--- a/src/main/java/org/bukkit/craftbukkit/Spigot.java
+++ b/src/main/java/org/bukkit/craftbukkit/Spigot.java
@@ -58,6 +58,9 @@ public class Spigot {
     public static List<String> bungeeIPs;
     public static int textureResolution = 16;
     public static final Pattern validName = Pattern.compile("^[a-zA-Z0-9_-]{2,16}$");
+    public static boolean snapshotSupport;
+    public static int snapshotProtocolVersion = 62;
+    public static String snapshotVersion = "13w16a";
 
     public static void initialize(CraftServer server, SimpleCommandMap commandMap, YamlConfiguration configuration) {
         commandMap.register("bukkit", new org.bukkit.craftbukkit.command.TicksPerSecondCommand("tps"));
@@ -97,6 +100,10 @@ public class Spigot {
         tabPing = configuration.getBoolean("settings.tab-ping", tabPing);
         bungeeIPs = configuration.getStringList("settings.bungee-proxies");
         textureResolution = configuration.getInt("settings.texture-resolution", textureResolution);
+        snapshotSupport = configuration.getBoolean("settings.snapshot-protocol", snapshotSupport);
+        if (snapshotSupport) {
+            server.getLogger().log(Level.INFO, "Enabled support for pre release / snapshot version {0}", snapshotVersion);
+        }
 
         if (metrics == null) {
             try {
diff --git a/src/main/resources/configurations/bukkit.yml b/src/main/resources/configurations/bukkit.yml
index 871b984..e1ec284 100644
--- a/src/main/resources/configurations/bukkit.yml
+++ b/src/main/resources/configurations/bukkit.yml
@@ -41,6 +41,8 @@ settings:
     bungee-proxies:
       - 127.0.0.1
     texture-resolution: 16
+    # fakes the latest pre release / snapshot
+    snapshot-protocol: false
 world-settings:
     default:
         growth-chunks-per-tick: 650
-- 
1.8.2.1