SteamWar/SpigotCore
SteamWar/SpigotCore
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Code Issues 4 Pull-Requests 1 Releases Wiki Aktivität

Fix TinyProtocol null player issues #207

Zusammengeführt
Lixfel hat 7 Commits von minifyTinyProtocol nach master 2022-08-23 14:10:15 +02:00 zusammengeführt
Diskussion 1 Commits 7 Geänderte Dateien 6 +145 -384
6 geänderte Dateien mit 145 neuen und 384 gelöschten Zeilen
Statistiken anzeigen Patch-Datei herunterladen Vergleichs-Datei herunterladen Alle Dateien ausklappen Alle Dateien einklappen

8
SpigotCore_19/src/de/steamwar/core/ChatWrapper19.java
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@ -19,8 +19,6 @@
package de.steamwar.core;
import com.comphenix.tinyprotocol.Reflection;
import com.comphenix.tinyprotocol.TinyProtocol;
import net.minecraft.network.chat.IChatMutableComponent;
import net.minecraft.network.chat.contents.LiteralContents;
@ -29,10 +27,4 @@ public class ChatWrapper19 implements ChatWrapper {
public Object stringToChatComponent(String text) {
return IChatMutableComponent.a(new LiteralContents(text));
}
private static final Reflection.FieldAccessor<String> getName = Reflection.getField(TinyProtocol.PACKET_LOGIN_IN_START, String.class, 0);
@Override
public String getNameByLoginPacket(Object packet) {
return getName.get(packet);
}
}

8
SpigotCore_8/src/de/steamwar/core/ChatWrapper8.java
Datei anzeigen

@ -20,8 +20,6 @@
package de.steamwar.core;
import com.comphenix.tinyprotocol.Reflection;
import com.comphenix.tinyprotocol.TinyProtocol;
import com.mojang.authlib.GameProfile;
public class ChatWrapper8 implements ChatWrapper {
@ -30,10 +28,4 @@ public class ChatWrapper8 implements ChatWrapper {
public Object stringToChatComponent(String text) {
return chatComponentConstructor.invoke(text);
}
private static final Reflection.FieldAccessor<GameProfile> getGameProfile = Reflection.getField(TinyProtocol.PACKET_LOGIN_IN_START, GameProfile.class, 0);
@Override
public String getNameByLoginPacket(Object packet) {
return getGameProfile.get(packet).getName();
}
}

33
SpigotCore_Main/src/com/comphenix/tinyprotocol/Reflection.java
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@ -4,9 +4,7 @@ import de.steamwar.core.Core;
import jdk.internal.misc.Unsafe;
import org.bukkit.Bukkit;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.*;
import java.util.Arrays;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
@ -135,15 +133,16 @@ public final class Reflection {
return getField(getClass(className), fieldType, index);
}
// Common method
private static <T> FieldAccessor<T> getField(Class<?> target, String name, Class<T> fieldType, int index) {
public static <T> FieldAccessor<T> getField(Class<?> target, Class<T> fieldType, int index, Class<?>... parameters) {
return getField(target, null, fieldType, index, parameters);
}
private static <T> FieldAccessor<T> getField(Class<?> target, String name, Class<T> fieldType, int index, Class<?>... parameters) {
for (final Field field : target.getDeclaredFields()) {
if ((name == null || field.getName().equals(name)) && fieldType.isAssignableFrom(field.getType()) && index-- <= 0) {
if(matching(field, name, fieldType, parameters) && index-- <= 0) {
field.setAccessible(true);
// A function for retrieving a specific field value
return new FieldAccessor<T>() {
@Override
@SuppressWarnings("unchecked")
public T get(Object target) {
@ -179,6 +178,24 @@ public final class Reflection {
throw new IllegalArgumentException("Cannot find field with type " + fieldType);
}
private static <T> boolean matching(Field field, String name, Class<T> fieldType, Class<?>... parameters) {
if(name != null && !field.getName().equals(name))
return false;
if(!fieldType.isAssignableFrom(field.getType()))
return false;
if(parameters.length > 0) {
Type[] arguments = ((ParameterizedType)field.getGenericType()).getActualTypeArguments();
for(int i = 0; i < parameters.length; i++) {
if(arguments[i] != parameters[i])
return false;
}
}
return true;
}
/**
* Search for the first publicly and privately defined method of the given name and parameter count.
*

477
SpigotCore_Main/src/com/comphenix/tinyprotocol/TinyProtocol.java
Datei anzeigen

@ -1,253 +1,81 @@
package com.comphenix.tinyprotocol;
import com.comphenix.tinyprotocol.Reflection.FieldAccessor;
import com.comphenix.tinyprotocol.Reflection.MethodInvoker;
import com.google.common.collect.Lists;
import com.google.common.collect.MapMaker;
import de.steamwar.core.ChatWrapper;
import de.steamwar.core.Core;
import io.netty.channel.*;
import org.bukkit.Bukkit;
import io.netty.channel.Channel;
import io.netty.channel.ChannelDuplexHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPromise;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.HandlerList;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerLoginEvent;
import org.bukkit.event.player.PlayerQuitEvent;
import org.bukkit.event.server.PluginDisableEvent;
import org.bukkit.plugin.Plugin;
import org.bukkit.scheduler.BukkitRunnable;
import java.util.*;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.BiFunction;
import java.util.logging.Level;
/**
* Represents a very tiny alternative to ProtocolLib.
* <p>
* It now supports intercepting packets during login and status ping (such as OUT_SERVER_PING)!
*
* @author Kristian
*/
public class TinyProtocol {
private static final AtomicInteger ID = new AtomicInteger(0);
public class TinyProtocol implements Listener {
// Used in order to lookup a channel
private static final MethodInvoker getPlayerHandle = Reflection.getMethod("{obc}.entity.CraftPlayer", "getHandle");
private static final Class<Object> playerConnection = Reflection.getUntypedClass("{nms.server.network}.PlayerConnection");
private static final FieldAccessor<Object> getConnection = Reflection.getField("{nms.server.level}.EntityPlayer", playerConnection, 0);
private static final Class<Object> networkManager = Reflection.getUntypedClass("{nms.network}.NetworkManager");
private static final FieldAccessor<Object> getManager = Reflection.getField(playerConnection, networkManager, 0);
private static final FieldAccessor<Channel> getChannel = Reflection.getField(networkManager, Channel.class, 0);
// Looking up ServerConnection
private static final Class<Object> minecraftServerClass = Reflection.getUntypedClass("{nms.server}.MinecraftServer");
private static final Class<Object> serverConnectionClass = Reflection.getUntypedClass("{nms.server.network}.ServerConnection");
private static final FieldAccessor<Object> getMinecraftServer = Reflection.getField("{obc}.CraftServer", minecraftServerClass, 0);
private static final FieldAccessor<Object> getServerConnection = Reflection.getField(minecraftServerClass, serverConnectionClass, 0);
private static final FieldAccessor<Collection> getNetworkMarkers = Reflection.getField(serverConnectionClass, Collection.class, 1);
// Packets we have to intercept
public static final Class<?> PACKET_LOGIN_IN_START = Reflection.getClass("{nms.network.protocol.login}.PacketLoginInStart");
// Speedup channel lookup
private final Map<String, Channel> channelLookup = new MapMaker().weakValues().makeMap();
private final Listener listener;
// Channels that have already been removed
private final Set<Channel> uninjectedChannels = Collections.newSetFromMap(new MapMaker().weakKeys().<Channel, Boolean>makeMap());
// List of network markers
private Collection<Object> networkManagers;
// Injected channel handlers
private final List<Channel> serverChannels = Lists.newArrayList();
private ChannelInboundHandlerAdapter serverChannelHandler;
private ChannelInitializer<Channel> beginInitProtocol;
private ChannelInitializer<Channel> endInitProtocol;
// Current handler name
private final String handlerName;
private volatile boolean closed;
private final Plugin plugin;
private final Map<Class<?>, List<BiFunction<Player, Object, Object>>> packetFilters = new HashMap<>();
@Deprecated
private PacketFilter inFilter = (player, channel, packet) -> packet;
@Deprecated
private PacketFilter outFilter = (player, channel, packet) -> packet;
private static final Class<?> craftServer = Reflection.getClass("{obc}.CraftServer");
private static final Class<?> dedicatedPlayerList = Reflection.getClass("{nms.server.dedicated}.DedicatedPlayerList");
private static final FieldAccessor<?> getPlayerList = Reflection.getField(craftServer, dedicatedPlayerList, 0);
private static final Class<?> playerList = Reflection.getClass("{nms.server.players}.PlayerList");
private static final Class<?> minecraftServer = Reflection.getClass("{nms.server}.MinecraftServer");
private static final FieldAccessor<?> getMinecraftServer = Reflection.getField(playerList, minecraftServer, 0);
private static final Class<?> serverConnection = Reflection.getClass("{nms.server.network}.ServerConnection");
private static final FieldAccessor<?> getServerConnection = Reflection.getField(minecraftServer, serverConnection, 0);
private static final Class<?> networkManager = Reflection.getClass("{nms.network}.NetworkManager");
private static final FieldAccessor<List> getConnections = Reflection.getField(serverConnection, List.class, 0, networkManager);
public static final TinyProtocol instance = new TinyProtocol(Core.getInstance());
private static int id = 0;
public static void init() {
//enforce init
}
public TinyProtocol(final Plugin plugin) {
private final Plugin plugin;
private final String handlerName;
private final List<?> connections;
private boolean closed;
private final Map<Class<?>, List<BiFunction<Player, Object, Object>>> packetFilters = new HashMap<>();
private final Map<Player, PacketInterceptor> playerInterceptors = new HashMap<>();
private TinyProtocol(final Plugin plugin) {
this.plugin = plugin;
this.handlerName = "tiny-" + plugin.getName() + "-" + ++id;
this.connections = getConnections.get(getServerConnection.get(getMinecraftServer.get(getPlayerList.get(plugin.getServer()))));
// Compute handler name
this.handlerName = "tiny-" + plugin.getName() + "-" + ID.incrementAndGet();
plugin.getServer().getPluginManager().registerEvents(this, plugin);
// Prepare existing players
listener = new Listener() {
@EventHandler(priority = EventPriority.LOWEST)
public void onPlayerLogin(PlayerLoginEvent e) {
injectPlayerOnLogin(
e.getPlayer(),
() -> Bukkit.getScheduler().runTask(plugin, () -> injectPlayerOnLogin(
e.getPlayer(),
() -> Bukkit.getScheduler().runTaskLater(plugin, () -> injectPlayerOnLogin(
e.getPlayer(),
() -> {
//Give up
}
), 1)
))
);
}
@EventHandler
public void onPluginDisable(PluginDisableEvent e) {
if (e.getPlugin().equals(plugin)) {
close();
}
}
};
plugin.getServer().getPluginManager().registerEvents(listener, plugin);
try {
registerChannelHandler();
registerPlayers(plugin);
} catch (IllegalArgumentException ex) {
// Damn you, late bind
plugin.getLogger().info("[TinyProtocol] Delaying server channel injection due to late bind.");
new BukkitRunnable() {
@Override
public void run() {
registerChannelHandler();
registerPlayers(plugin);
plugin.getLogger().info("[TinyProtocol] Late bind injection successful.");
}
}.runTask(plugin);
}
}
private void injectPlayerOnLogin(Player player, Runnable errorHandler) {
if (closed)
return;
try {
Channel channel = getChannel(player);
// Don't inject players that have been explicitly uninjected
if (!uninjectedChannels.contains(channel)) {
injectPlayer(player);
}
} catch (NullPointerException ex) {
errorHandler.run();
}
}
private void createServerChannelHandler() {
// Handle connected channels
endInitProtocol = new ChannelInitializer<Channel>() {
@Override
protected void initChannel(Channel channel) throws Exception {
try {
// This can take a while, so we need to stop the main thread from interfering
synchronized (networkManagers) {
// Stop injecting channels
if (!closed) {
channel.eventLoop().submit(() -> injectChannelInternal(channel));
}
}
} catch (Exception e) {
plugin.getLogger().log(Level.SEVERE, "Cannot inject incomming channel " + channel, e);
}
}
};
// This is executed before Minecraft's channel handler
beginInitProtocol = new ChannelInitializer<Channel>() {
@Override
protected void initChannel(Channel channel) throws Exception {
channel.pipeline().addLast(endInitProtocol);
}
};
serverChannelHandler = new ChannelInboundHandlerAdapter() {
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
Channel channel = (Channel) msg;
// Prepare to initialize ths channel
channel.pipeline().addFirst(beginInitProtocol);
ctx.fireChannelRead(msg);
}
};
}
@SuppressWarnings("unchecked")
private void registerChannelHandler() {
Object mcServer = getMinecraftServer.get(Bukkit.getServer());
Object serverConnection = getServerConnection.get(mcServer);
boolean looking = true;
// We need to synchronize against this list
networkManagers = getNetworkMarkers.get(serverConnection);
createServerChannelHandler();
// Find the correct list, or implicitly throw an exception
for (int i = 0; looking; i++) {
List<Object> list = Reflection.getField(serverConnection.getClass(), List.class, i).get(serverConnection);
for (Object item : list) {
if (!(item instanceof ChannelFuture))
break;
// Channel future that contains the server connection
Channel serverChannel = ((ChannelFuture) item).channel();
serverChannels.add(serverChannel);
serverChannel.pipeline().addFirst(serverChannelHandler);
looking = false;
}
}
}
private void unregisterChannelHandler() {
if (serverChannelHandler == null)
return;
for (Channel serverChannel : serverChannels) {
final ChannelPipeline pipeline = serverChannel.pipeline();
// Remove channel handler
serverChannel.eventLoop().execute(() -> {
try {
pipeline.remove(serverChannelHandler);
} catch (NoSuchElementException e) {
// That's fine
}
});
}
}
private void registerPlayers(Plugin plugin) {
for (Player player : plugin.getServer().getOnlinePlayers()) {
injectPlayer(player);
new PacketInterceptor(player);
}
}
@EventHandler(priority = EventPriority.LOWEST)
public void onPlayerLogin(PlayerLoginEvent e) {
if(closed)
return;
new PacketInterceptor(e.getPlayer());
}
@EventHandler(priority = EventPriority.MONITOR)
public void onPlayerDisconnect(PlayerQuitEvent e) {
getInterceptor(e.getPlayer()).ifPresent(PacketInterceptor::close);
}
@EventHandler
public void onPluginDisable(PluginDisableEvent e) {
if (e.getPlugin().equals(plugin)) {
close();
}
}
@ -259,158 +87,84 @@ public class TinyProtocol {
packetFilters.getOrDefault(packetType, Collections.emptyList()).remove(filter);
}
public Object onPacketOutAsync(Player receiver, Channel channel, Object packet) {
return filterPacket(outFilter, receiver, channel, packet);
}
public Object onPacketInAsync(Player sender, Channel channel, Object packet) {
return filterPacket(inFilter, sender, channel, packet);
}
private Object filterPacket(PacketFilter handler, Player player, Channel channel, Object packet) {
List<BiFunction<Player, Object, Object>> filters = packetFilters.getOrDefault(packet.getClass(), Collections.emptyList());
for(BiFunction<Player, Object, Object> filter : filters) {
packet = filter.apply(player, packet);
if(packet == null)
return packet;
}
return handler.onPacket(player, channel, packet);
}
@Deprecated
public void setInFilter(PacketFilter filter) {
inFilter = filter;
}
@Deprecated
public void setOutFilter(PacketFilter filter) {
outFilter = filter;
}
public void sendPacket(Player player, Object packet) {
sendPacket(getChannel(player), packet);
}
public void sendPacket(Channel channel, Object packet) {
channel.pipeline().writeAndFlush(packet);
getInterceptor(player).ifPresent(i -> i.sendPacket(packet));
}
public void receivePacket(Player player, Object packet) {
receivePacket(getChannel(player), packet);
}
public void receivePacket(Channel channel, Object packet) {
channel.pipeline().context("encoder").fireChannelRead(packet);
}
public void injectPlayer(Player player) {
injectChannelInternal(getChannel(player)).player = player;
}
public void injectChannel(Channel channel) {
injectChannelInternal(channel);
}
private PacketInterceptor injectChannelInternal(Channel channel) {
try {
PacketInterceptor interceptor = (PacketInterceptor) channel.pipeline().get(handlerName);
// Inject our packet interceptor
if (interceptor == null) {
interceptor = new PacketInterceptor();
if(!channel.isActive())
return interceptor;
channel.pipeline().addBefore("packet_handler", handlerName, interceptor);
uninjectedChannels.remove(channel);
}
return interceptor;
} catch (IllegalArgumentException e) {
// Try again
return (PacketInterceptor) channel.pipeline().get(handlerName);
}
}
public Channel getChannel(Player player) {
Channel channel = channelLookup.get(player.getName());
// Lookup channel again
if (channel == null) {
Object connection = getConnection.get(getPlayerHandle.invoke(player));
Object manager = getManager.get(connection);
channelLookup.put(player.getName(), channel = getChannel.get(manager));
}
return channel;
}
public void uninjectPlayer(Player player) {
uninjectChannel(getChannel(player));
}
public void uninjectChannel(final Channel channel) {
// No need to guard against this if we're closing
if (!closed) {
uninjectedChannels.add(channel);
}
// See ChannelInjector in ProtocolLib, line 590
channel.eventLoop().execute(() -> {
try {
channel.pipeline().remove(handlerName);
} catch (NoSuchElementException e) {
// ignore
}
});
}
public boolean hasInjected(Player player) {
return hasInjected(getChannel(player));
}
public boolean hasInjected(Channel channel) {
return channel.pipeline().get(handlerName) != null;
getInterceptor(player).ifPresent(i -> i.receivePacket(packet));
}
public final void close() {
if (!closed) {
closed = true;
if(closed)
return;
closed = true;
// Remove our handlers
for (Player player : plugin.getServer().getOnlinePlayers()) {
uninjectPlayer(player);
}
HandlerList.unregisterAll(this);
// Clean up Bukkit
HandlerList.unregisterAll(listener);
unregisterChannelHandler();
for (Player player : plugin.getServer().getOnlinePlayers()) {
getInterceptor(player).ifPresent(PacketInterceptor::close);
}
}
@Deprecated
public interface PacketFilter {
Object onPacket(Player player, Channel channel, Object packet);
private Optional<PacketInterceptor> getInterceptor(Player player) {
synchronized (playerInterceptors) {
return Optional.ofNullable(playerInterceptors.get(player));
}
}
private static final FieldAccessor<Channel> getChannel = Reflection.getField(networkManager, Channel.class, 0);
private static final FieldAccessor<UUID> getUUID = Reflection.getField(networkManager, UUID.class, 0);
private final class PacketInterceptor extends ChannelDuplexHandler {
// Updated by the login event
public volatile Player player;
private final Player player;
private final Channel channel;
private PacketInterceptor(Player player) {
this.player = player;
channel = getChannel.get(connections.stream().filter(connection -> player.getUniqueId().equals(getUUID.get(connection))).findAny().orElseThrow(() -> {
player.kickPlayer("An injection failure happend.");
return new SecurityException("Could not find channel for player " + player.getName());
}));
synchronized (playerInterceptors) {
playerInterceptors.put(player, this);
}
channel.pipeline().addBefore("packet_handler", handlerName, this);
}
private void sendPacket(Object packet) {
channel.pipeline().writeAndFlush(packet);
}
private void receivePacket(Object packet) {
channel.pipeline().context("encoder").fireChannelRead(packet);
}
private void close() {
if(channel.isActive()) {
channel.eventLoop().execute(() -> {
try {
channel.pipeline().remove(handlerName);
} catch (NoSuchElementException e) {
// ignore
}
});
}
synchronized (playerInterceptors) {
playerInterceptors.remove(player, this);
}
}
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
// Intercept channel
final Channel channel = ctx.channel();
handleLoginStart(channel, msg);
try {
msg = onPacketInAsync(player, channel, msg);
msg = filterPacket(player, msg);
} catch (Exception e) {
plugin.getLogger().log(Level.SEVERE, "Error in onPacketInAsync().", e);
plugin.getLogger().log(Level.SEVERE, "Error during incoming packet processing", e);
}
if (msg != null) {
@ -421,9 +175,9 @@ public class TinyProtocol {
@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
try {
msg = onPacketOutAsync(player, ctx.channel(), msg);
msg = filterPacket(player, msg);
} catch (Exception e) {
plugin.getLogger().log(Level.SEVERE, "Error in onPacketOutAsync().", e);
plugin.getLogger().log(Level.SEVERE, "Error during outgoing packet processing", e);
}
if (msg != null) {
@ -431,10 +185,17 @@ public class TinyProtocol {
}
}
private void handleLoginStart(Channel channel, Object packet) {
if (PACKET_LOGIN_IN_START.isInstance(packet)) {
channelLookup.put(ChatWrapper.impl.getNameByLoginPacket(packet), channel);
private Object filterPacket(Player player, Object packet) {
List<BiFunction<Player, Object, Object>> filters = packetFilters.getOrDefault(packet.getClass(), Collections.emptyList());
for(BiFunction<Player, Object, Object> filter : filters) {
packet = filter.apply(player, packet);
if(packet == null)
break;
}
return packet;
}
}
}

1
SpigotCore_Main/src/de/steamwar/core/ChatWrapper.java
Datei anzeigen

@ -23,5 +23,4 @@ public interface ChatWrapper {
ChatWrapper impl = VersionDependent.getVersionImpl(Core.getInstance());
Object stringToChatComponent(String text);
String getNameByLoginPacket(Object packet);
}

2
SpigotCore_Main/src/de/steamwar/techhider/ProtocolUtils.java
Datei anzeigen

@ -37,7 +37,7 @@ public class ProtocolUtils {
private ProtocolUtils() {}
public static void broadcastPacket(Object packet) {
Bukkit.getOnlinePlayers().stream().map(TinyProtocol.instance::getChannel).filter(TinyProtocol.instance::hasInjected).forEach(channel -> TinyProtocol.instance.sendPacket(channel, packet));
Bukkit.getOnlinePlayers().forEach(player -> TinyProtocol.instance.sendPacket(player, packet));
}
public static BiFunction<Object, UnaryOperator<Object>, Object> arrayCloneGenerator(Class<?> elementClass) {