Mirrors/ViaVersion
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Mirror von https://github.com/ViaVersion/ViaVersion.git synchronisiert 2024-07-31 03:18:03 +02:00
Code Issues Releases Aktivität

Merge pull request #7 from MylesIsCool/master

Quellcode durchsuchen 
Update from master
Dieser Commit ist enthalten in:
HugoDaBosss 2016-03-04 14:43:10 +01:00
Commit 0dd530a593
15 geänderte Dateien mit 687 neuen und 146 gelöschten Zeilen
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25
README.md
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@ -1,17 +1,9 @@
# ViaVersion 0.4.6
**Allows the connection of 1.8 clients to 1.9**
# ViaVersion 0.4.9
**Allows the connection of 1.9 clients to 1.8**
This plugin modifies netty to allow connection of 1.9 clients to 1.8,
**Don't use late bind*
**As of this point it doesn't have everything, I need to fix:**
Attempt to make boats nicer when they don't work
Remap spawn eggs
If you have a bug with entities, please report the full stack trace
###**Don't use late bind*
This took hours of work, so if you enjoy this consider looking into contacting me and supporting my projects.
@ -24,16 +16,27 @@ Sources:
**MCProtocolLib** (used for chunk reading & some of writing.)
**OpenNBT** (used for slot rewriting)
Contributors:
--------
**Myself** (harhar)
**Matsv/StamBoom**
**HugoDaBosss**
**SanderGielisse**
**Paulomart**
**gigosaurus**
**fillefilip8**
**Chat: ** https://gitter.im/MylesIsCool/ViaVersion
We use it to collaborate and solve errors, sign in with github.

41
pom.xml
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@ -1,14 +1,30 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>us.myles</groupId>
<artifactId>ViaVersion</artifactId>
<version>1.0-SNAPSHOT</version>
<version>0.4.9</version>
<build>
<finalName>ViaVersion-${version}</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>1.4</version>
<configuration>
<createDependencyReducedPom>false</createDependencyReducedPom>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
@ -18,8 +34,19 @@
</configuration>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
</build>
<dependencies>
<dependency>
<groupId>org.spacehq</groupId>
<artifactId>opennbt</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.bukkit</groupId>
<artifactId>bukkit</artifactId>
@ -50,5 +77,9 @@
<id>spigot-repo</id>
<url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
</repository>
</repositories>
<repository>
<id>spacehq-repo</id>
<url>https://repo.spacehq.org/content/repositories/releases/</url>
</repository>
</repositories>
</project>

46
src/main/java/us/myles/ViaVersion/ViaVersionPlugin.java
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@ -12,12 +12,13 @@ import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerQuitEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.java.JavaPlugin;
import us.myles.ViaVersion.api.ViaVersion;
import us.myles.ViaVersion.api.ViaVersionAPI;
import us.myles.ViaVersion.commands.ViaVersionCommand;
import us.myles.ViaVersion.handlers.ViaVersionInitializer;
import us.myles.ViaVersion.util.ReflectionUtil;
import java.lang.reflect.Field;
import java.util.Collections;
import java.util.List;
import java.util.Set;
@ -33,12 +34,12 @@ public class ViaVersionPlugin extends JavaPlugin implements ViaVersionAPI {
@Override
public void onEnable() {
ViaVersion.setInstance(this);
if(System.getProperty("ViaVersion") != null){
if (System.getProperty("ViaVersion") != null) {
getLogger().severe("ViaVersion is already loaded, we don't support reloads. Please reboot if you wish to update.");
return;
}
getLogger().info("ViaVersion enabled, injecting. (Allows 1.8 to be accessed via 1.9)");
getLogger().info("ViaVersion " + getDescription().getVersion() + " is now enabled, injecting. (Allows 1.8 to be accessed via 1.9)");
try {
injectPacketHandler();
System.setProperty("ViaVersion", getDescription().getVersion());
@ -52,24 +53,36 @@ public class ViaVersionPlugin extends JavaPlugin implements ViaVersionAPI {
setPorted(e.getPlayer().getUniqueId(), false);
}
}, this);
getCommand("viaversion").setExecutor(new ViaVersionCommand());
}
public void injectPacketHandler() throws Exception {
Class<?> serverClazz = ReflectionUtil.nms("MinecraftServer");
Object server = ReflectionUtil.invokeStatic(serverClazz, "getServer");
Object connection = serverClazz.getDeclaredMethod("getServerConnection").invoke(server);
List<ChannelFuture> futures = ReflectionUtil.get(connection, "g", List.class);
if (futures.size() == 0) {
throw new Exception("Could not find server to inject (Please ensure late-bind in your spigot.yml is false)");
// loop through all fields checking if list
boolean injected = false;
for (Field field : connection.getClass().getDeclaredFields()) {
field.setAccessible(true);
Object value = field.get(connection);
if (value instanceof List) {
for (Object o : (List) value) {
if (o instanceof ChannelFuture) {
ChannelFuture future = (ChannelFuture) o;
ChannelPipeline pipeline = future.channel().pipeline();
ChannelHandler bootstrapAcceptor = pipeline.first();
ChannelInitializer<SocketChannel> oldInit = ReflectionUtil.get(bootstrapAcceptor, "childHandler", ChannelInitializer.class);
ChannelInitializer newInit = new ViaVersionInitializer(oldInit);
ReflectionUtil.set(bootstrapAcceptor, "childHandler", newInit);
injected = true;
} else {
break; // not the right list.
}
}
}
}
for (ChannelFuture future : futures) {
ChannelPipeline pipeline = future.channel().pipeline();
ChannelHandler bootstrapAcceptor = pipeline.first();
ChannelInitializer<SocketChannel> oldInit = ReflectionUtil.get(bootstrapAcceptor, "childHandler", ChannelInitializer.class);
ChannelInitializer newInit = new ViaVersionInitializer(oldInit);
ReflectionUtil.set(bootstrapAcceptor, "childHandler", newInit);
if (!injected) {
throw new Exception("Could not find server to inject (Please ensure late-bind in your spigot.yml is false)");
}
}
@ -78,6 +91,11 @@ public class ViaVersionPlugin extends JavaPlugin implements ViaVersionAPI {
return portedPlayers.contains(player.getUniqueId());
}
@Override
public String getVersion() {
return getDescription().getVersion();
}
public void setPorted(UUID id, boolean value) {
if (value) {
portedPlayers.add(id);

7
src/main/java/us/myles/ViaVersion/api/ViaVersionAPI.java
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@ -3,6 +3,11 @@ package us.myles.ViaVersion.api;
import org.bukkit.entity.Player;
public interface ViaVersionAPI {
/**
* Is player using 1.9?
* @param player
* @return
*/
boolean isPorted(Player player);
String getVersion();
}

48
src/main/java/us/myles/ViaVersion/commands/ViaVersionCommand.java Normale Datei
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@ -0,0 +1,48 @@
package us.myles.ViaVersion.commands;
import org.bukkit.Bukkit;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import us.myles.ViaVersion.api.ViaVersion;
import java.util.ArrayList;
import java.util.List;
/**
* Created by fillefilip8 on 2016-03-03.
*/
public class ViaVersionCommand implements CommandExecutor {
@Override
public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
if (sender.hasPermission("viaversion.admin")) {
if (args.length == 0) {
sender.sendMessage(color("&aViaVersion &c" + ViaVersion.getInstance().getVersion()));
sender.sendMessage(color("&6Commands:"));
sender.sendMessage(color("&2/viaversion list &7- &6Shows lists of all 1.9 clients and 1.8 clients."));
} else if (args.length == 1) {
if (args[0].equalsIgnoreCase("list")) {
List<String> portedPlayers = new ArrayList<String>();
List<String> normalPlayers = new ArrayList<String>();
for (Player p : Bukkit.getOnlinePlayers()) {
if (ViaVersion.getInstance().isPorted(p)) {
portedPlayers.add(p.getName());
} else {
normalPlayers.add(p.getName());
}
}
sender.sendMessage(color("&8[&61.9&8]: &b" + portedPlayers.toString()));
sender.sendMessage(color("&8[&61.8&8]: &b" + normalPlayers.toString()));
}
}
}
return false;
}
public String color(String string){
return string.replace("&", "§");
}
}

11
src/main/java/us/myles/ViaVersion/handlers/ViaDecodeHandler.java
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@ -31,6 +31,7 @@ public class ViaDecodeHandler extends ByteToMessageDecoder {
ByteBuf newPacket = ctx.alloc().buffer();
try {
incomingTransformer.transform(id, bytebuf, newPacket);
bytebuf.readBytes(bytebuf.readableBytes());
bytebuf = newPacket;
} catch (CancelException e) {
bytebuf.readBytes(bytebuf.readableBytes());
@ -44,13 +45,7 @@ public class ViaDecodeHandler extends ByteToMessageDecoder {
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
if (!(cause.getCause().getCause() instanceof CancelException)) {
if (!(cause.getCause() instanceof CancelException)) {
if (!(cause instanceof CancelException)) {
super.exceptionCaught(ctx, cause);
}
}
}
if (PacketUtil.containsCause(cause, CancelException.class)) return;
super.exceptionCaught(ctx, cause);
}
}

9
src/main/java/us/myles/ViaVersion/handlers/ViaEncodeHandler.java
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@ -72,12 +72,7 @@ public class ViaEncodeHandler extends MessageToByteEncoder {
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
if (!(cause.getCause().getCause() instanceof CancelException)) {
if (!(cause.getCause() instanceof CancelException)) {
if (!(cause instanceof CancelException)) {
super.exceptionCaught(ctx, cause);
}
}
}
if (PacketUtil.containsCause(cause, CancelException.class)) return;
super.exceptionCaught(ctx, cause);
}
}

6
src/main/java/us/myles/ViaVersion/metadata/MetaIndex.java
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@ -27,10 +27,10 @@ public enum MetaIndex {
STAND_LL_POS(ArmorStand.class, 15, Type.Rotation, NewType.Vector3F),
STAND_RL_POS(ArmorStand.class, 16, Type.Rotation, NewType.Vector3F),
// human, discountined?
PLAYER_SKIN_FLAGS(HumanEntity.class, 10, Type.Byte, NewType.Discontinued), // unsigned on 1.8
PLAYER_SKIN_FLAGS(HumanEntity.class, 10, Type.Byte, 12, NewType.Byte), // unsigned on 1.8
PLAYER_HUMAN_BYTE(HumanEntity.class, 16, Type.Byte, NewType.Discontinued), // unused on 1.8
PLAYER_ADDITIONAL_HEARTS(HumanEntity.class, 17, Type.Float, NewType.Discontinued),
PLAYER_SCORE(HumanEntity.class, 18, Type.Int, NewType.Discontinued),
PLAYER_ADDITIONAL_HEARTS(HumanEntity.class, 17, Type.Float, 10, NewType.Float),
PLAYER_SCORE(HumanEntity.class, 18, Type.Int, 11, NewType.VarInt),
// horse
HORSE_INFO(Horse.class, 16, Type.Int, 12, NewType.Byte),
HORSE_TYPE(Horse.class, 19, Type.Byte, 13, NewType.VarInt),

15
src/main/java/us/myles/ViaVersion/metadata/MetadataRewriter.java
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@ -11,6 +11,8 @@ import org.bukkit.util.Vector;
import io.netty.buffer.ByteBuf;
import us.myles.ViaVersion.slot.ItemSlotRewriter;
import us.myles.ViaVersion.slot.ItemSlotRewriter.ItemStack;
import us.myles.ViaVersion.util.PacketUtil;
public class MetadataRewriter {
@ -92,7 +94,9 @@ public class MetadataRewriter {
output.writeBoolean(((Byte) value).byteValue() != 0);
break;
case Slot:
PacketUtil.writeItem(value, output);
ItemStack item = (ItemStack) value;
ItemSlotRewriter.fixIdsFrom1_8To1_9(item);
ItemSlotRewriter.writeItemStack(item, output);
break;
case Position:
Vector vector = (Vector) value;
@ -148,8 +152,13 @@ public class MetadataRewriter {
case String:
entries.add(new Entry(index, PacketUtil.readString(buf)));
break;
case Slot:
entries.add(new Entry(index, PacketUtil.readItem(buf)));
case Slot: {
try {
entries.add(new Entry(index, ItemSlotRewriter.readItemStack(buf)));
} catch (Exception e) {
e.printStackTrace();
}
}
break;
case Position: {
int x = buf.readInt();

297
src/main/java/us/myles/ViaVersion/slot/ItemSlotRewriter.java Normale Datei
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@ -0,0 +1,297 @@
package us.myles.ViaVersion.slot;
import io.netty.buffer.ByteBuf;
import org.bukkit.Material;
import org.spacehq.opennbt.tag.builtin.CompoundTag;
import org.spacehq.opennbt.tag.builtin.StringTag;
import us.myles.ViaVersion.CancelException;
import us.myles.ViaVersion.util.PacketUtil;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
public class ItemSlotRewriter {
public static void rewrite1_9To1_8(ByteBuf input, ByteBuf output) throws CancelException {
try {
ItemStack item = readItemStack(input);
fixIdsFrom1_9To1_8(item);
writeItemStack(item, output);
} catch (Exception e) {
System.out.println("Error while rewriting an item slot.");
e.printStackTrace();
throw new CancelException();
}
}
public static void rewrite1_8To1_9(ByteBuf input, ByteBuf output) throws CancelException {
try {
ItemStack item = readItemStack(input);
fixIdsFrom1_8To1_9(item);
writeItemStack(item, output);
} catch (Exception e) {
System.out.println("Error while rewriting an item slot.");
e.printStackTrace();
throw new CancelException();
}
}
public static void fixIdsFrom1_9To1_8(ItemStack item) {
if (item != null) {
if (item.id == Material.MONSTER_EGG.getId() && item.data == 0) {
CompoundTag tag = item.tag;
int data = 0;
if (tag != null && tag.get("EntityTag") instanceof CompoundTag) {
CompoundTag entityTag = tag.get("EntityTag");
if (entityTag.get("id") instanceof StringTag) {
StringTag id = entityTag.get("id");
if (ENTTIY_NAME_TO_ID.containsKey(id.getValue()))
data = ENTTIY_NAME_TO_ID.get(id.getValue());
}
}
item.tag = null;
item.data = (short) data;
}
if (item.id == Material.POTION.getId()) {
CompoundTag tag = item.tag;
int data = 0;
if (tag != null && tag.get("Potion") instanceof StringTag) {
StringTag potion = tag.get("Potion");
String potionName = potion.getValue().replace("minecraft:", "");
if (POTION_NAME_TO_ID.containsKey(potionName)) {
data = POTION_NAME_TO_ID.get(potionName);
}
}
item.tag = null;
item.data = (short) data;
}
if (item.id == 438) {
CompoundTag tag = item.tag;
int data = 0;
item.id = (short) Material.POTION.getId();
if (tag != null && tag.get("Potion") instanceof StringTag) {
StringTag potion = tag.get("Potion");
String potionName = potion.getValue().replace("minecraft:", "");
if (POTION_NAME_TO_ID.containsKey(potionName)) {
data = POTION_NAME_TO_ID.get(potionName) + 8192;
}
}
item.tag = null;
item.data = (short) data;
}
}
}
public static void fixIdsFrom1_8To1_9(ItemStack item) {
if (item != null) {
if (item.id == Material.MONSTER_EGG.getId() && item.data != 0) {
CompoundTag tag = item.tag;
if (tag == null) {
tag = new CompoundTag("tag");
}
CompoundTag entityTag = new CompoundTag("EntityTag");
if (ENTTIY_ID_TO_NAME.containsKey(Integer.valueOf(item.data))) {
StringTag id = new StringTag("id", ENTTIY_ID_TO_NAME.get(Integer.valueOf(item.data)));
entityTag.put(id);
tag.put(entityTag);
}
item.tag = tag;
item.data = 0;
}
if (item.id == Material.POTION.getId()) {
CompoundTag tag = item.tag;
if (tag == null) {
tag = new CompoundTag("tag");
}
if(item.data >= 16384){
item.id = 438; // splash id
item.data = (short) (item.data - 8192);
}
if (POTION_ID_TO_NAME.containsKey(Integer.valueOf(item.data))) {
String name = POTION_ID_TO_NAME.get(Integer.valueOf(item.data));
StringTag potion = new StringTag("Potion", "minecraft:" + name);
tag.put(potion);
}
item.tag = tag;
item.data = 0;
}
}
}
public static ItemStack readItemStack(ByteBuf input) throws IOException {
short id = input.readShort();
if (id < 0) {
return null;
} else {
ItemStack item = new ItemStack();
item.id = id;
item.amount = input.readByte();
item.data = input.readShort();
item.tag = PacketUtil.readNBT(input);
return item;
}
}
public static void writeItemStack(ItemStack item, ByteBuf output) throws IOException {
if (item == null) {
output.writeShort(-1);
} else {
output.writeShort(item.id);
output.writeByte(item.amount);
output.writeShort(item.data);
PacketUtil.writeNBT(output, item.tag);
}
}
public static class ItemStack {
public short id;
public byte amount;
public short data;
public CompoundTag tag;
public static ItemStack fromBukkit(org.bukkit.inventory.ItemStack stack) {
ItemStack item = new ItemStack();
item.id = (short) stack.getTypeId();
item.amount = (byte) stack.getAmount();
item.data = stack.getData().getData();
// TODO: nbt
return item;
}
}
private static Map<String, Integer> ENTTIY_NAME_TO_ID = new HashMap<>();
private static Map<Integer, String> ENTTIY_ID_TO_NAME = new HashMap<>();
private static Map<String, Integer> POTION_NAME_TO_ID = new HashMap<>();
private static Map<Integer, String> POTION_ID_TO_NAME = new HashMap<>();
static {
/* Entities */
registerEntity(1, "Item");
registerEntity(2, "XPOrb");
registerEntity(7, "ThrownEgg");
registerEntity(8, "LeashKnot");
registerEntity(9, "Painting");
registerEntity(10, "Arrow");
registerEntity(11, "Snowball");
registerEntity(12, "Fireball");
registerEntity(13, "SmallFireball");
registerEntity(14, "ThrownEnderpearl");
registerEntity(15, "EyeOfEnderSignal");
registerEntity(16, "ThrownPotion");
registerEntity(17, "ThrownExpBottle");
registerEntity(18, "ItemFrame");
registerEntity(19, "WitherSkull");
registerEntity(20, "PrimedTnt");
registerEntity(21, "FallingSand");
registerEntity(22, "FireworksRocketEntity");
registerEntity(30, "ArmorStand");
registerEntity(40, "MinecartCommandBlock");
registerEntity(41, "Boat");
registerEntity(42, "MinecartRideable");
registerEntity(43, "MinecartChest");
registerEntity(44, "MinecartFurnace");
registerEntity(45, "MinecartTNT");
registerEntity(46, "MinecartHopper");
registerEntity(47, "MinecartSpawner");
registerEntity(48, "Mob");
registerEntity(49, "Monster");
registerEntity(50, "Creeper");
registerEntity(51, "Skeleton");
registerEntity(52, "Spider");
registerEntity(53, "Giant");
registerEntity(54, "Zombie");
registerEntity(55, "Slime");
registerEntity(56, "Ghast");
registerEntity(57, "PigZombie");
registerEntity(58, "Enderman");
registerEntity(59, "CaveSpider");
registerEntity(60, "Silverfish");
registerEntity(61, "Blaze");
registerEntity(62, "LavaSlime");
registerEntity(63, "EnderDragon");
registerEntity(64, "WitherBoss");
registerEntity(65, "Bat");
registerEntity(66, "Witch");
registerEntity(67, "Endermite");
registerEntity(68, "Guardian");
registerEntity(90, "Pig");
registerEntity(91, "Sheep");
registerEntity(92, "Cow");
registerEntity(93, "Chicken");
registerEntity(94, "Squid");
registerEntity(95, "Wolf");
registerEntity(96, "MushroomCow");
registerEntity(97, "SnowMan");
registerEntity(98, "Ozelot");
registerEntity(99, "VillagerGolem");
registerEntity(100, "EntityHorse");
registerEntity(101, "Rabbit");
registerEntity(120, "Villager");
registerEntity(200, "EnderCrystal");
/* Potions */
registerPotion(0, "water");
registerPotion(64, "mundane");
registerPotion(32, "thick");
registerPotion(16, "awkward");
registerPotion(8198, "night_vision");
registerPotion(8262, "long_night_vision");
registerPotion(8206, "invisibility");
registerPotion(8270, "long_invisibility");
registerPotion(8203, "leaping");
registerPotion(8267, "long_leaping");
registerPotion(8235, "strong_leaping");
registerPotion(8195, "fire_resistance");
registerPotion(8259, "long_fire_resistance");
registerPotion(8194, "swiftness");
registerPotion(8258, "long_swiftness");
registerPotion(8226, "strong_swiftness");
registerPotion(8202, "slowness");
registerPotion(8266, "long_slowness");
registerPotion(8205, "water_breathing");
registerPotion(8269, "long_water_breathing");
registerPotion(8197, "healing");
registerPotion(8229, "strong_healing");
registerPotion(8204, "harming");
registerPotion(8236, "strong_harming");
registerPotion(8196, "poison");
registerPotion(8260, "long_poison");
registerPotion(8228, "strong_poison");
registerPotion(8193, "regeneration");
registerPotion(8257, "long_regeneration");
registerPotion(8225, "strong_regeneration");
registerPotion(8201, "strength");
registerPotion(8265, "long_strength");
registerPotion(8233, "strong_strength");
registerPotion(8200, "weakness");
registerPotion(8264, "long_weakness");
}
private static void registerEntity(Integer id, String name) {
ENTTIY_ID_TO_NAME.put(id, name);
ENTTIY_NAME_TO_ID.put(name, id);
}
private static void registerPotion(Integer id, String name) {
POTION_ID_TO_NAME.put(id, name);
POTION_NAME_TO_ID.put(name, id);
}
}

78
src/main/java/us/myles/ViaVersion/transformers/IncomingTransformer.java
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@ -1,17 +1,26 @@
package us.myles.ViaVersion.transformers;
import com.avaje.ebeaninternal.server.cluster.Packet;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import org.bukkit.Material;
import org.bukkit.inventory.ItemStack;
import org.spacehq.opennbt.tag.builtin.ListTag;
import org.spacehq.opennbt.tag.builtin.StringTag;
import org.spacehq.opennbt.tag.builtin.Tag;
import us.myles.ViaVersion.CancelException;
import us.myles.ViaVersion.ConnectionInfo;
import us.myles.ViaVersion.ViaVersionPlugin;
import us.myles.ViaVersion.slot.ItemSlotRewriter;
import us.myles.ViaVersion.packets.PacketType;
import us.myles.ViaVersion.packets.State;
import us.myles.ViaVersion.util.PacketUtil;
import us.myles.ViaVersion.util.ReflectionUtil;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.nio.charset.Charset;
public class IncomingTransformer {
private final ConnectionInfo info;
@ -82,7 +91,7 @@ public class IncomingTransformer {
return;
}
if (packet == PacketType.PLAY_PLAYER_DIGGING) {
byte status = input.readByte();
int status = input.readByte() & 0xFF; // unsign
if (status == 6) { // item swap
throw new CancelException();
}
@ -102,7 +111,9 @@ public class IncomingTransformer {
if (slot == 45 && windowID == 0) {
try {
Class<?> setSlot = ReflectionUtil.nms("PacketPlayOutSetSlot");
Object setSlotPacket = setSlot.getConstructors()[1].newInstance(windowID, slot, null);
Constructor setSlotConstruct = setSlot.getDeclaredConstructor(int.class, int.class, ReflectionUtil.nms("ItemStack"));
// properly construct
Object setSlotPacket = setSlotConstruct.newInstance(windowID, slot, null);
info.getChannel().pipeline().writeAndFlush(setSlotPacket); // slot is empty
slot = -999; // we're evil, they'll throw item on the ground
} catch (ClassNotFoundException e) {
@ -113,6 +124,8 @@ public class IncomingTransformer {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
}
}
@ -121,7 +134,7 @@ public class IncomingTransformer {
output.writeByte(button);
output.writeShort(action);
output.writeByte(mode);
output.writeBytes(input);
ItemSlotRewriter.rewrite1_9To1_8(input, output);
return;
}
if (packet == PacketType.PLAY_CLIENT_SETTINGS) {
@ -166,6 +179,26 @@ public class IncomingTransformer {
}
return;
}
if(packet == PacketType.PLAY_PLUGIN_MESSAGE_REQUEST) {
String name = PacketUtil.readString(input);
PacketUtil.writeString(name, output);
byte[] b = new byte[input.readableBytes()];
input.readBytes(b);
// patch books
if(name.equals("MC|BSign")){
ByteBuf in = Unpooled.wrappedBuffer(b);
try {
ItemSlotRewriter.ItemStack stack = ItemSlotRewriter.readItemStack(in);
stack.id = (short) Material.WRITTEN_BOOK.getId();
// write
ItemSlotRewriter.writeItemStack(stack, output);
} catch (IOException e) {
e.printStackTrace();
}
return;
}
output.writeBytes(b);
}
if (packet == PacketType.PLAY_PLAYER_BLOCK_PLACEMENT) {
Long position = input.readLong();
output.writeLong(position);
@ -174,22 +207,14 @@ public class IncomingTransformer {
int hand = PacketUtil.readVarInt(input);
ItemStack inHand = ViaVersionPlugin.getHandItem(info);
Object item = null;
try {
Method m = ReflectionUtil.obc("inventory.CraftItemStack").getDeclaredMethod("asNMSCopy", ItemStack.class);
item = m.invoke(null, inHand);
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
ItemSlotRewriter.ItemStack item = ItemSlotRewriter.ItemStack.fromBukkit(inHand);
ItemSlotRewriter.fixIdsFrom1_9To1_8(item);
ItemSlotRewriter.writeItemStack(item, output);
} catch (Exception e) {
e.printStackTrace();
}
PacketUtil.writeItem(item, output);
short curX = input.readUnsignedByte();
output.writeByte(curX);
short curY = input.readUnsignedByte();
@ -206,26 +231,25 @@ public class IncomingTransformer {
output.writeByte(255);
// write item in hand
ItemStack inHand = ViaVersionPlugin.getHandItem(info);
Object item = null;
try {
Method m = ReflectionUtil.obc("inventory.CraftItemStack").getDeclaredMethod("asNMSCopy", ItemStack.class);
item = m.invoke(null, inHand);
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
ItemSlotRewriter.ItemStack item = ItemSlotRewriter.ItemStack.fromBukkit(inHand);
ItemSlotRewriter.fixIdsFrom1_9To1_8(item);
ItemSlotRewriter.writeItemStack(item, output);
} catch (Exception e) {
e.printStackTrace();
}
PacketUtil.writeItem(item, output);
output.writeByte(-1);
output.writeByte(-1);
output.writeByte(-1);
return;
}
if (packet == PacketType.PLAY_CREATIVE_INVENTORY_ACTION) {
short slot = input.readShort();
output.writeShort(slot);
ItemSlotRewriter.rewrite1_9To1_8(input, output);
}
output.writeBytes(input);
}
}

155
src/main/java/us/myles/ViaVersion/transformers/OutgoingTransformer.java
Datei anzeigen

@ -1,15 +1,17 @@
package us.myles.ViaVersion.transformers;
import com.google.gson.Gson;
import com.google.gson.JsonObject;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import org.bukkit.Material;
import org.bukkit.entity.EntityType;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
import org.spacehq.mc.protocol.data.game.chunk.Column;
import org.spacehq.mc.protocol.util.NetUtil;
import org.spacehq.opennbt.tag.builtin.ListTag;
import org.spacehq.opennbt.tag.builtin.StringTag;
import org.spacehq.opennbt.tag.builtin.Tag;
import us.myles.ViaVersion.CancelException;
import us.myles.ViaVersion.ConnectionInfo;
import us.myles.ViaVersion.ViaVersionPlugin;
@ -17,6 +19,7 @@ import us.myles.ViaVersion.api.ViaVersion;
import us.myles.ViaVersion.metadata.MetadataRewriter;
import us.myles.ViaVersion.packets.PacketType;
import us.myles.ViaVersion.packets.State;
import us.myles.ViaVersion.slot.ItemSlotRewriter;
import us.myles.ViaVersion.sounds.SoundEffect;
import us.myles.ViaVersion.util.EntityUtil;
import us.myles.ViaVersion.util.PacketUtil;
@ -28,7 +31,6 @@ import java.util.*;
import static us.myles.ViaVersion.util.PacketUtil.*;
public class OutgoingTransformer {
private static Gson gson = new Gson();
private final ConnectionInfo info;
private final ViaVersionPlugin plugin = (ViaVersionPlugin) ViaVersion.getInstance();
private boolean cancel = false;
@ -50,7 +52,7 @@ public class OutgoingTransformer {
if (packet == null) {
throw new RuntimeException("Outgoing Packet not found? " + packetID + " State: " + info.getState() + " Version: " + info.getProtocol());
}
// if (packet != PacketType.PLAY_CHUNK_DATA && packet != PacketType.PLAY_KEEP_ALIVE && packet != PacketType.PLAY_TIME_UPDATE && (!packet.name().toLowerCase().contains("move") && !packet.name().contains("look")))
// if (packet != PacketType.PLAY_CHUNK_DATA && packet != PacketType.PLAY_KEEP_ALIVE && packet != PacketType.PLAY_TIME_UPDATE && (!packet.name().toLowerCase().contains("move") && !packet.name().toLowerCase().contains("look")))
// System.out.println("Packet Type: " + packet + " Original ID: " + packetID + " State:" + info.getState());
if (packet.getPacketID() != -1) {
packetID = packet.getNewPacketID();
@ -60,15 +62,14 @@ public class OutgoingTransformer {
PacketUtil.writeVarInt(packetID, output);
if (packet == PacketType.PLAY_NAMED_SOUND_EFFECT) {
String name = PacketUtil.readString(input);
SoundEffect effect = SoundEffect.getByName(name);
int catid = 0;
String newname = name;
if (effect != null) {
if(effect.isBreakPlaceSound()) {
input.readBytes(input.readableBytes());
output.clear();
return;
}
if (effect.isBreakPlaceSound()) {
throw new CancelException();
}
catid = effect.getCategory().getId();
newname = effect.getNewName();
}
@ -87,12 +88,12 @@ public class OutgoingTransformer {
if (!vehicleMap.containsKey(passenger))
throw new CancelException();
vehicle = vehicleMap.remove(passenger);
writeVarInt(vehicle,output);
writeVarInt(vehicle, output);
writeVarIntArray(Collections.<Integer>emptyList(), output);
} else{
} else {
writeVarInt(vehicle, output);
writeVarIntArray(Collections.singletonList(passenger), output);
vehicleMap.put(passenger,vehicle);
vehicleMap.put(passenger, vehicle);
}
return;
}
@ -100,6 +101,17 @@ public class OutgoingTransformer {
output.writeInt(vehicle);
return;
}
if (packet == PacketType.PLAY_PLUGIN_MESSAGE) {
String name = PacketUtil.readString(input);
PacketUtil.writeString(name, output);
byte[] b = new byte[input.readableBytes()];
input.readBytes(b);
// patch books
if(name.equals("MC|BOpen")){
PacketUtil.writeVarInt(0, output);
}
output.writeBytes(b);
}
if (packet == PacketType.PLAY_DISCONNECT) {
String reason = readString(input);
writeString(fixJson(reason), output);
@ -115,6 +127,55 @@ public class OutgoingTransformer {
output.writeBytes(input);
return;
}
if (packet == PacketType.PLAY_PLAYER_LIST_ITEM) {
int action = readVarInt(input);
writeVarInt(action, output);
int players = readVarInt(input);
writeVarInt(players, output);
// loop through players
for (int i = 0; i < players; i++) {
UUID uuid = readUUID(input);
writeUUID(uuid, output);
if (action == 0) { // add player
writeString(readString(input), output); // name
int properties = readVarInt(input);
writeVarInt(properties, output);
// loop through properties
for (int j = 0; j < properties; j++) {
writeString(readString(input), output); // name
writeString(readString(input), output); // value
boolean isSigned = input.readBoolean();
output.writeBoolean(isSigned);
if (isSigned) {
writeString(readString(input), output); // signature
}
}
writeVarInt(readVarInt(input), output); // gamemode
writeVarInt(readVarInt(input), output); // ping
boolean hasDisplayName = input.readBoolean();
output.writeBoolean(hasDisplayName);
if (hasDisplayName) {
writeString(fixJson(readString(input)), output); // display name
}
} else if ((action == 1) || (action == 2)) { // update gamemode || update latency
writeVarInt(readVarInt(input), output);
} else if (action == 3) { // update display name
boolean hasDisplayName = input.readBoolean();
output.writeBoolean(hasDisplayName);
if (hasDisplayName) {
writeString(fixJson(readString(input)), output); // display name
}
} else if (action == 4) { // remove player
// no fields
}
}
return;
}
if (packet == PacketType.PLAY_PLAYER_LIST_HEADER_FOOTER) {
String header = readString(input);
String footer = readString(input);
@ -192,9 +253,14 @@ public class OutgoingTransformer {
if (packet == PacketType.STATUS_RESPONSE) {
String original = PacketUtil.readString(input);
JsonObject object = gson.fromJson(original, JsonObject.class);
object.get("version").getAsJsonObject().addProperty("protocol", info.getProtocol());
PacketUtil.writeString(gson.toJson(object), output);
try {
JSONObject json = (JSONObject) new JSONParser().parse(original);
JSONObject version = (JSONObject) json.get("version");
version.put("protocol", info.getProtocol());
PacketUtil.writeString(json.toJSONString(), output);
} catch (ParseException e) {
e.printStackTrace();
}
return;
}
if (packet == PacketType.LOGIN_SUCCESS) {
@ -221,7 +287,9 @@ public class OutgoingTransformer {
slot += 1; // add 1 so it's now 2-5
}
PacketUtil.writeVarInt(slot, output);
output.writeBytes(input);
ItemSlotRewriter.rewrite1_8To1_9(input, output);
return;
}
if (packet == PacketType.PLAY_ENTITY_METADATA) {
int id = PacketUtil.readVarInt(input);
@ -338,6 +406,28 @@ public class OutgoingTransformer {
output.writeBytes(input);
return;
}
if (packet == PacketType.PLAY_SET_SLOT) {
int windowId = input.readUnsignedByte();
output.writeByte(windowId);
short slot = input.readShort();
output.writeShort(slot);
ItemSlotRewriter.rewrite1_8To1_9(input, output);
return;
}
if (packet == PacketType.PLAY_WINDOW_ITEMS) {
int windowId = input.readUnsignedByte();
output.writeByte(windowId);
short count = input.readShort();
output.writeShort(count);
for (int i = 0; i < count; i++) {
ItemSlotRewriter.rewrite1_8To1_9(input, output);
}
return;
}
if (packet == PacketType.PLAY_SPAWN_MOB) {
int id = PacketUtil.readVarInt(input);
PacketUtil.writeVarInt(id, output);
@ -428,6 +518,20 @@ public class OutgoingTransformer {
output.writeBytes(input);
return;
}
if (packet == PacketType.PLAY_ENTITY_EFFECT) {
int id = PacketUtil.readVarInt(input);
PacketUtil.writeVarInt(id, output);
byte effectID = input.readByte();
output.writeByte(effectID);
byte amplifier = input.readByte();
output.writeByte(amplifier);
int duration = PacketUtil.readVarInt(input);
PacketUtil.writeVarInt(duration, output);
// we need to write as a byte instead of boolean
boolean hideParticles = input.readBoolean();
output.writeByte(hideParticles ? 1 : 0);
return;
}
if (packet == PacketType.PLAY_TEAM) {
String teamName = PacketUtil.readString(input);
PacketUtil.writeString(teamName, output);
@ -460,7 +564,7 @@ public class OutgoingTransformer {
int bitMask = input.readUnsignedShort();
if (bitMask == 0) {
if (bitMask == 0 && groundUp) {
output.clear();
PacketUtil.writeVarInt(PacketType.PLAY_UNLOAD_CHUNK.getNewPacketID(), output);
output.writeInt(chunkX);
@ -497,7 +601,7 @@ public class OutgoingTransformer {
output.writeBytes(input);
}
private String fixJson(String line) {
public static String fixJson(String line) {
if (line == null || line.equalsIgnoreCase("null")) {
line = "{\"text\":\"\"}";
} else {
@ -507,11 +611,10 @@ public class OutgoingTransformer {
line = "{\"text\":" + line + "}";
}
try {
new JSONParser().parse(line);
}
catch (org.json.simple.parser.ParseException e) {
System.out.println("Invalid JSON String: \"" + line + "\" Please report this issue to the ViaVersion Github!");
return "{\"text\":\"\"}";
new JSONParser().parse(line);
} catch (Exception e) {
System.out.println("Invalid JSON String: \"" + line + "\" Please report this issue to the ViaVersion Github: " + e.getMessage());
return "{\"text\":\"\"}";
}
return line;
}

74
src/main/java/us/myles/ViaVersion/util/PacketUtil.java
Datei anzeigen

@ -3,6 +3,8 @@ package us.myles.ViaVersion.util;
import com.google.common.base.Charsets;
import com.google.common.base.Preconditions;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufInputStream;
import io.netty.buffer.ByteBufOutputStream;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.handler.codec.MessageToByteEncoder;
@ -11,6 +13,9 @@ import us.myles.ViaVersion.chunks.PacketChunk;
import us.myles.ViaVersion.chunks.PacketChunkData;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.nio.ByteBuffer;
@ -21,6 +26,9 @@ import java.util.BitSet;
import java.util.List;
import java.util.UUID;
import org.spacehq.opennbt.NBTIO;
import org.spacehq.opennbt.tag.builtin.CompoundTag;
public class PacketUtil {
private static Method DECODE_METHOD;
private static Method ENCODE_METHOD;
@ -42,6 +50,25 @@ public class PacketUtil {
}
}
public static CompoundTag readNBT(ByteBuf input) throws IOException {
int readerIndex = input.readerIndex();
byte b = input.readByte();
if (b == 0) {
return null;
} else {
input.readerIndex(readerIndex);
return (CompoundTag) NBTIO.readTag(new DataInputStream(new ByteBufInputStream(input)));
}
}
public static void writeNBT(ByteBuf output, CompoundTag tag) throws IOException {
if (tag == null) {
output.writeByte(0);
} else {
NBTIO.writeTag(new DataOutputStream(new ByteBufOutputStream(output)), tag);
}
}
public static List<Object> callDecode(ByteToMessageDecoder decoder, ChannelHandlerContext ctx, Object input) {
List<Object> output = new ArrayList<Object>();
try {
@ -354,45 +381,6 @@ public class PacketUtil {
return output;
}
public static void writeItem(Object value, ByteBuf output) {
try {
Class<?> serializer = ReflectionUtil.nms("PacketDataSerializer");
Object init = serializer.getDeclaredConstructor(ByteBuf.class).newInstance(output);
Method toCall = init.getClass().getDeclaredMethod("a", ReflectionUtil.nms("ItemStack"));
toCall.invoke(init, value);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
public static Object readItem(ByteBuf output) {
try {
Class<?> serializer = ReflectionUtil.nms("PacketDataSerializer");
Object init = serializer.getDeclaredConstructor(ByteBuf.class).newInstance(output);
Method toCall = init.getClass().getDeclaredMethod("i");
return toCall.invoke(init);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
return null;
}
public static long[] readBlockPosition(ByteBuf buf) {
long val = buf.readLong();
long x = (val >> 38); // signed
@ -414,4 +402,12 @@ public class PacketUtil {
return data;
}
public static boolean containsCause(Throwable t, Class<? extends Throwable> c) {
while (t != null) {
t = t.getCause();
if (c.isAssignableFrom(t.getClass())) return true;
}
return false;
}
}

12
src/main/java/us/myles/ViaVersion/util/ReflectionUtil.java
Datei anzeigen

@ -27,6 +27,18 @@ public class ReflectionUtil {
return m.invoke(o);
}
public static <T> T getStatic(Class<?> clazz, String f, Class<T> t) throws NoSuchFieldException, IllegalAccessException {
Field field = clazz.getDeclaredField(f);
field.setAccessible(true);
return (T) field.get(null);
}
public static <T> T get(Object instance, Class<?> clazz, String f, Class<T> t) throws NoSuchFieldException, IllegalAccessException {
Field field = clazz.getDeclaredField(f);
field.setAccessible(true);
return (T) field.get(instance);
}
public static <T> T get(Object o, String f, Class<T> t) throws NoSuchFieldException, IllegalAccessException {
Field field = o.getClass().getDeclaredField(f);
field.setAccessible(true);

9
src/main/resources/plugin.yml
Datei anzeigen

@ -1,6 +1,11 @@
name: ViaVersion
main: us.myles.ViaVersion.ViaVersionPlugin
author: _MylesC
version: 0.4.6
version: ${version}
load: startup
loadbefore: [ProtocolLib, ProxyPipe]
loadbefore: [ProtocolLib, ProxyPipe]
commands:
viaversion:
description: Shows ViaVersion Version and more.
permission: viaversion.admin
aliases: [viaver]