PaperMC/CraftBukkit-Patches/0039-Snapshot-support.patch

From b2e48aa371f8e8709db1cfb230e0ffaf7f039f77 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Sat, 2 Mar 2013 13:34:17 +1100
Subject: [PATCH] Snapshot support.

---
 src/main/java/net/minecraft/server/ItemStack.java  |  1 +
 .../java/net/minecraft/server/MinecraftServer.java |  2 +-
 .../net/minecraft/server/Packet100OpenWindow.java  | 46 ++++++++++++++++++++++
 .../net/minecraft/server/PendingConnection.java    |  6 +--
 src/main/java/org/bukkit/craftbukkit/Spigot.java   |  8 ++++
 src/main/resources/configurations/bukkit.yml       |  2 +
 6 files changed, 61 insertions(+), 4 deletions(-)
 create mode 100644 src/main/java/net/minecraft/server/Packet100OpenWindow.java

diff --git a/src/main/java/net/minecraft/server/ItemStack.java b/src/main/java/net/minecraft/server/ItemStack.java
index 8f0a5ad..3043db9 100644
--- a/src/main/java/net/minecraft/server/ItemStack.java
+++ b/src/main/java/net/minecraft/server/ItemStack.java
@@ -38,6 +38,7 @@ public final class ItemStack {
         this.f = null;
         this.id = i;
         this.count = j;
+        if (org.bukkit.craftbukkit.Spigot.snapshotSupport && this.id >= 146 && this.id <= 158) this.id = 0; // Spigot
         this.setData(k); // CraftBukkit
     }
 
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 6005fac..79b4369 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -765,7 +765,7 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IMo
     }
 
     public String getVersion() {
-        return "1.4.7";
+        return (org.bukkit.craftbukkit.Spigot.snapshotSupport) ? org.bukkit.craftbukkit.Spigot.snapshotVersion : "1.4.7";
     }
 
     public int y() {
diff --git a/src/main/java/net/minecraft/server/Packet100OpenWindow.java b/src/main/java/net/minecraft/server/Packet100OpenWindow.java
new file mode 100644
index 0000000..5182bfa
--- /dev/null
+++ b/src/main/java/net/minecraft/server/Packet100OpenWindow.java
@@ -0,0 +1,46 @@
+package net.minecraft.server;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+public class Packet100OpenWindow extends Packet {
+
+    public int a;
+    public int b;
+    public String c;
+    public int d;
+
+    public Packet100OpenWindow() {}
+
+    public Packet100OpenWindow(int i, int j, String s, int k) {
+        this.a = i;
+        this.b = j;
+        this.c = s;
+        this.d = k;
+    }
+
+    public void handle(Connection connection) {
+        connection.a(this);
+    }
+
+    public void a(DataInputStream datainputstream) throws IOException {
+        this.a = datainputstream.readByte() & 255;
+        this.b = datainputstream.readByte() & 255;
+        this.c = a(datainputstream, 32);
+        this.d = datainputstream.readByte() & 255;
+        if (org.bukkit.craftbukkit.Spigot.snapshotSupport) datainputstream.readBoolean(); // Spigot
+    }
+
+    public void a(DataOutputStream dataoutputstream) throws IOException {
+        dataoutputstream.writeByte(this.a & 255);
+        dataoutputstream.writeByte(this.b & 255);
+        a(this.c, dataoutputstream);
+        dataoutputstream.writeByte(this.d & 255);
+        if (org.bukkit.craftbukkit.Spigot.snapshotSupport) dataoutputstream.writeBoolean(false); // Spigot
+    }
+
+    public int a() {
+        return 3 + this.c.length();
+    }
+}
diff --git a/src/main/java/net/minecraft/server/PendingConnection.java b/src/main/java/net/minecraft/server/PendingConnection.java
index cdd456f..08aa314 100644
--- a/src/main/java/net/minecraft/server/PendingConnection.java
+++ b/src/main/java/net/minecraft/server/PendingConnection.java
@@ -78,8 +78,8 @@ public class PendingConnection extends Connection {
         } else {
             PublicKey publickey = this.server.F().getPublic();
 
-            if (packet2handshake.d() != 51) {
-                if (packet2handshake.d() > 51) {
+            if (packet2handshake.d() != ((org.bukkit.craftbukkit.Spigot.snapshotSupport) ? org.bukkit.craftbukkit.Spigot.snapshotProtocolVersion : 51)) {
+                if (packet2handshake.d() > ((org.bukkit.craftbukkit.Spigot.snapshotSupport) ? org.bukkit.craftbukkit.Spigot.snapshotProtocolVersion : 51)) {
                     this.disconnect("Outdated server!");
                 } else {
                     this.disconnect("Outdated client!");
@@ -154,7 +154,7 @@ 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, 51, this.server.getVersion(), pingEvent.getMotd(), playerlist.getPlayerCount(), pingEvent.getMaxPlayers() };
+                Object[] list = new Object[] { 1, ((org.bukkit.craftbukkit.Spigot.snapshotSupport) ? org.bukkit.craftbukkit.Spigot.snapshotProtocolVersion : 51), 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 7785d45..9d5d316 100644
--- a/src/main/java/org/bukkit/craftbukkit/Spigot.java
+++ b/src/main/java/org/bukkit/craftbukkit/Spigot.java
@@ -23,6 +23,9 @@ public class Spigot {
 
     public static boolean tabPing = false;
     private static Metrics metrics;
+    public static boolean snapshotSupport;
+    public static int snapshotProtocolVersion = 60;
+    public static String snapshotVersion = "1.5";
 
     public static void initialize(CraftServer server, SimpleCommandMap commandMap, YamlConfiguration configuration) {
         commandMap.register("bukkit", new org.bukkit.craftbukkit.command.TicksPerSecondCommand("tps"));
@@ -60,6 +63,11 @@ public class Spigot {
 
         tabPing = configuration.getBoolean("settings.tab-ping", tabPing);
 
+        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 {
                 metrics = new Metrics();
diff --git a/src/main/resources/configurations/bukkit.yml b/src/main/resources/configurations/bukkit.yml
index aac1406..0351530 100644
--- a/src/main/resources/configurations/bukkit.yml
+++ b/src/main/resources/configurations/bukkit.yml
@@ -35,6 +35,8 @@ settings:
     timeout-time: 30
     restart-on-crash: false
     restart-script-location: /path/to/server/start.sh
+    # fakes the latest pre release / snapshot
+    snapshot-protocol: false
 world-settings:
     default:
         growth-chunks-per-tick: 650
-- 
1.8.1-rc2