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Code Issues Projects Releases Wiki Activity

Remove a bunch of legacy (<1.8) code

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Shouldn't break any servers running 1.8+, but this version is all about code cleanup baby
This commit is contained in:
Dan Mulloy 2020-06-06 15:13:29 -04:00
parent 7ac4ac696f
commit fdd30a7b87
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GPG Key ID: 2B62F7DACFF133E8
60 changed files with 143 additions and 9261 deletions
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6
pom.xml
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@ -16,7 +16,7 @@
<project.build.number></project.build.number>
<project.fullVersion>${project.version}</project.fullVersion>
<powermock.version>2.0.4</powermock.version>
<powermock.version>2.0.7</powermock.version>
<spigot.version>1.15.2-R0.1-SNAPSHOT</spigot.version>
</properties>
@ -302,13 +302,13 @@
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<version>4.13</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>3.2.0</version>
<version>3.3.3</version>
<scope>test</scope>
</dependency>
<dependency>

52
src/main/java/com/comphenix/protocol/AsynchronousManager.java
View File

@ -42,83 +42,63 @@ public interface AsynchronousManager {
* @param listener - the packet listener that will receive these asynchronous events.
* @return An asynchronous handler.
*/
public abstract AsyncListenerHandler registerAsyncHandler(PacketListener listener);
AsyncListenerHandler registerAsyncHandler(PacketListener listener);
/**
* Unregisters and closes the given asynchronous handler.
* @param handler - asynchronous handler.
*/
public abstract void unregisterAsyncHandler(AsyncListenerHandler handler);
void unregisterAsyncHandler(AsyncListenerHandler handler);
/**
* Unregisters and closes the first asynchronous handler associated with the given listener.
* @param listener - asynchronous listener
*/
public abstract void unregisterAsyncHandler(PacketListener listener);
void unregisterAsyncHandler(PacketListener listener);
/**
* Unregisters every asynchronous handler associated with this plugin.
* @param plugin - the original plugin.
*/
public void unregisterAsyncHandlers(Plugin plugin);
/**
* Retrieves a immutable set containing the ID of the sent server packets that will be
* observed by the asynchronous listeners.
* <p>
* Deprecated: Use {@link #getSendingTypes()} instead.
* @return Every filtered server packet.
*/
@Deprecated
public abstract Set<Integer> getSendingFilters();
void unregisterAsyncHandlers(Plugin plugin);
/**
* Retrieves a immutable set containing the types of the sent server packets that will be
* observed by the asynchronous listeners.
* @return Every filtered server packet.
*/
public abstract Set<PacketType> getSendingTypes();
/**
* Retrieves a immutable set containing the ID of the recieved client packets that will be
* <p>
* Deprecated: Use {@link #getReceivingTypes()} instead.
* observed by the asynchronous listeners.
* @return Every filtered client packet.
*/
@Deprecated
public abstract Set<Integer> getReceivingFilters();
Set<PacketType> getSendingTypes();
/**
* Retrieves a immutable set containing the types of the received client packets that will be
* observed by the asynchronous listeners.
* @return Every filtered client packet.
*/
public abstract Set<PacketType> getReceivingTypes();
Set<PacketType> getReceivingTypes();
/**
* Determine if a given synchronous packet has asynchronous listeners.
* @param packet - packet to test.
* @return TRUE if it does, FALSE otherwise.
*/
public abstract boolean hasAsynchronousListeners(PacketEvent packet);
boolean hasAsynchronousListeners(PacketEvent packet);
/**
* Retrieve the default packet stream.
* @return Default packet stream.
*/
public abstract PacketStream getPacketStream();
PacketStream getPacketStream();
/**
* Retrieve the default error reporter.
* @return Default reporter.
*/
public abstract ErrorReporter getErrorReporter();
ErrorReporter getErrorReporter();
/**
* Remove listeners, close threads and transmit every delayed packet.
*/
public abstract void cleanupAll();
void cleanupAll();
/**
* Signal that a packet is ready to be transmitted.
@ -127,29 +107,29 @@ public interface AsynchronousManager {
* has been called previously.
* @param packet - packet to signal.
*/
public abstract void signalPacketTransmission(PacketEvent packet);
void signalPacketTransmission(PacketEvent packet);
/**
* Register a synchronous listener that handles packets when they time out.
* @param listener - synchronous listener that will handle timed out packets.
*/
public abstract void registerTimeoutHandler(PacketListener listener);
void registerTimeoutHandler(PacketListener listener);
/**
* Unregisters a given timeout listener.
* @param listener - the timeout listener to unregister.
*/
public abstract void unregisterTimeoutHandler(PacketListener listener);
void unregisterTimeoutHandler(PacketListener listener);
/**
* Get a immutable set of every registered timeout handler.
* @return Set of every registered timeout handler.
*/
public abstract Set<PacketListener> getTimeoutHandlers();
Set<PacketListener> getTimeoutHandlers();
/**
* Get an immutable set of every registered asynchronous packet listener.
* @return Set of every asynchronous packet listener.
*/
public abstract Set<PacketListener> getAsyncHandlers();
Set<PacketListener> getAsyncHandlers();
}

170
src/main/java/com/comphenix/protocol/CleanupStaticMembers.java
View File

@ -1,170 +0,0 @@
/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;
import com.comphenix.protocol.async.AsyncListenerHandler;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.events.ListeningWhitelist;
import com.comphenix.protocol.events.PacketContainer;
import com.comphenix.protocol.injector.BukkitUnwrapper;
import com.comphenix.protocol.injector.server.AbstractInputStreamLookup;
import com.comphenix.protocol.injector.server.TemporaryPlayerFactory;
import com.comphenix.protocol.injector.spigot.SpigotPacketInjector;
import com.comphenix.protocol.reflect.FieldUtils;
import com.comphenix.protocol.reflect.FuzzyReflection;
import com.comphenix.protocol.reflect.MethodUtils;
import com.comphenix.protocol.reflect.ObjectWriter;
import com.comphenix.protocol.reflect.compiler.BackgroundCompiler;
import com.comphenix.protocol.reflect.compiler.StructureCompiler;
import com.comphenix.protocol.reflect.instances.CollectionGenerator;
import com.comphenix.protocol.reflect.instances.DefaultInstances;
import com.comphenix.protocol.reflect.instances.PrimitiveGenerator;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.comphenix.protocol.wrappers.ChunkPosition;
import com.comphenix.protocol.wrappers.WrappedDataWatcher;
import com.comphenix.protocol.wrappers.WrappedWatchableObject;
import com.comphenix.protocol.wrappers.nbt.io.NbtBinarySerializer;
/**
* Used to fix ClassLoader leaks that may lead to filling up the permanent generation.
*
* @author Kristian
*/
class CleanupStaticMembers {
// Reports
public final static ReportType REPORT_CANNOT_RESET_FIELD = new ReportType("Unable to reset field %s: %s");
public final static ReportType REPORT_CANNOT_UNLOAD_CLASS = new ReportType("Unable to unload class %s.");
private ClassLoader loader;
private ErrorReporter reporter;
public CleanupStaticMembers(ClassLoader loader, ErrorReporter reporter) {
this.loader = loader;
this.reporter = reporter;
}
/**
* Ensure that the previous ClassLoader is not leaking.
*/
public void resetAll() {
// This list must always be updated
@SuppressWarnings("deprecation")
Class<?>[] publicClasses = {
AsyncListenerHandler.class, ListeningWhitelist.class, PacketContainer.class,
BukkitUnwrapper.class, DefaultInstances.class, CollectionGenerator.class,
PrimitiveGenerator.class, FuzzyReflection.class, MethodUtils.class,
BackgroundCompiler.class, StructureCompiler.class,
ObjectWriter.class, Packets.Server.class, Packets.Client.class,
ChunkPosition.class, WrappedDataWatcher.class, WrappedWatchableObject.class,
AbstractInputStreamLookup.class, TemporaryPlayerFactory.class, SpigotPacketInjector.class,
MinecraftReflection.class, NbtBinarySerializer.class
};
String[] internalClasses = {
"com.comphenix.protocol.events.SerializedOfflinePlayer",
"com.comphenix.protocol.injector.player.InjectedServerConnection",
"com.comphenix.protocol.injector.player.NetworkFieldInjector",
"com.comphenix.protocol.injector.player.NetworkObjectInjector",
"com.comphenix.protocol.injector.player.NetworkServerInjector",
"com.comphenix.protocol.injector.player.PlayerInjector",
"com.comphenix.protocol.injector.EntityUtilities",
"com.comphenix.protocol.injector.packet.PacketRegistry",
"com.comphenix.protocol.injector.packet.PacketInjector",
"com.comphenix.protocol.injector.packet.ReadPacketModifier",
"com.comphenix.protocol.injector.StructureCache",
"com.comphenix.protocol.reflect.compiler.BoxingHelper",
"com.comphenix.protocol.reflect.compiler.MethodDescriptor",
"com.comphenix.protocol.wrappers.nbt.WrappedElement",
};
resetClasses(publicClasses);
resetClasses(getClasses(loader, internalClasses));
}
private void resetClasses(Class<?>[] classes) {
// Reset each class one by one
for (Class<?> clazz : classes) {
resetClass(clazz);
}
}
private void resetClass(Class<?> clazz) {
for (Field field : clazz.getFields()) {
Class<?> type = field.getType();
// Only check static non-primitive fields. We also skip strings.
if (Modifier.isStatic(field.getModifiers()) &&
!type.isPrimitive() && !type.equals(String.class) &&
!type.equals(ReportType.class)) {
try {
setFinalStatic(field, null);
} catch (IllegalAccessException e) {
// Just inform the player
reporter.reportWarning(this,
Report.newBuilder(REPORT_CANNOT_RESET_FIELD).error(e).messageParam(field.getName(), e.getMessage())
);
e.printStackTrace();
}
}
}
}
// HACK! HAACK!
private static void setFinalStatic(Field field, Object newValue) throws IllegalAccessException {
int modifier = field.getModifiers();
boolean isFinal = Modifier.isFinal(modifier);
Field modifiersField = isFinal ? FieldUtils.getField(Field.class, "modifiers", true) : null;
// We have to remove the final field first
if (isFinal) {
FieldUtils.writeField(modifiersField, field, modifier & ~Modifier.FINAL, true);
}
// Now we can safely modify the field
FieldUtils.writeStaticField(field, newValue, true);
// Revert modifier
if (isFinal) {
FieldUtils.writeField(modifiersField, field, modifier, true);
}
}
private Class<?>[] getClasses(ClassLoader loader, String[] names) {
List<Class<?>> output = new ArrayList<Class<?>>();
for (String name : names) {
try {
output.add(loader.loadClass(name));
} catch (ClassNotFoundException e) {
// Warn the user
reporter.reportWarning(this, Report.newBuilder(REPORT_CANNOT_UNLOAD_CLASS).error(e).messageParam(name));
}
}
return output.toArray(new Class<?>[0]);
}
}

26
src/main/java/com/comphenix/protocol/PacketType.java
View File

@ -6,8 +6,6 @@ import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.util.*;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import java.util.function.Consumer;
import com.comphenix.protocol.PacketTypeLookup.ClassLookup;
@ -15,15 +13,14 @@ import com.comphenix.protocol.events.ConnectionSide;
import com.comphenix.protocol.injector.packet.PacketRegistry;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.comphenix.protocol.utility.MinecraftVersion;
import com.google.common.base.Objects;
import com.google.common.base.Preconditions;
import com.google.common.collect.ComparisonChain;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.google.common.util.concurrent.Futures;
import org.apache.commons.lang.WordUtils;
import org.bukkit.Bukkit;
import org.bukkit.scheduler.BukkitRunnable;
/**
* Represents the type of a packet in a specific protocol.
@ -953,34 +950,29 @@ public class PacketType implements Serializable, Cloneable, Comparable<PacketTyp
* Note that the registration will be performed on the main thread.
* @param type - the type to register.
* @param name - the name of the packet.
* @return A future telling us if our instance was registered.
*/
public static Future<Boolean> scheduleRegister(final PacketType type, final String name) {
Callable<Boolean> callable = new Callable<Boolean>() {
public static void scheduleRegister(final PacketType type, final String name) {
BukkitRunnable runnable = new BukkitRunnable() {
@Override
public Boolean call() throws Exception {
public void run() {
PacketTypeEnum objEnum;
// A bit ugly, but performance is critical
objEnum = getObjectEnum(type);
if (objEnum.registerMember(type, name)) {
getLookup().addPacketTypes(Arrays.asList(type));
return true;
getLookup().addPacketTypes(Collections.singletonList(type));
}
return false;
}
};
// Execute in the main thread if possible
if (Bukkit.getServer() == null || Bukkit.isPrimaryThread()) {
try {
return Futures.immediateFuture(callable.call());
} catch (Exception e) {
return Futures.immediateFailedFuture(e);
}
runnable.run();
} catch (Exception ignored) { }
} else {
runnable.runTaskLater(ProtocolLibrary.getPlugin(), 0);
}
return ProtocolLibrary.getExecutorSync().submit(callable);
}
/**

300
src/main/java/com/comphenix/protocol/Packets.java
View File

@ -1,300 +0,0 @@
/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol;
import com.comphenix.protocol.reflect.IntEnum;
/**
* List of known packet IDs since 1.3.2.
* <p>
* Deprecated: Use {@link PacketType} instead.
* @author Kristian
*/
@Deprecated
public final class Packets {
/**
* The highest possible packet ID. It's unlikely that this value will ever change.
*/
public static final int MAXIMUM_PACKET_ID = 255;
/**
* The maximum number of unique packet IDs. It's unlikely this will ever change.
*/
public static final int PACKET_COUNT = 256;
/**
* List of packets sent only by the server.
* <p>
* Deprecated: Use {@link PacketType} instead.
* @author Kristian
*/
@Deprecated
public static final class Server extends IntEnum {
/**
* The singleton instance. Can also be retrieved from the parent class.
*/
private static Server INSTANCE = new Server();
public static final int KEEP_ALIVE = 0;
public static final int LOGIN = 1;
public static final int CHAT = 3;
public static final int UPDATE_TIME = 4;
public static final int ENTITY_EQUIPMENT = 5;
public static final int SPAWN_POSITION = 6;
public static final int UPDATE_HEALTH = 8;
public static final int RESPAWN = 9;
public static final int FLYING = 10;
public static final int PLAYER_POSITION = 11;
public static final int PLAYER_LOOK = 12;
public static final int PLAYER_LOOK_MOVE = 13;
/**
* Made bi-directional in 1.4.6.
*/
public static final int BLOCK_ITEM_SWITCH = 16;
public static final int ENTITY_LOCATION_ACTION = 17;
public static final int ARM_ANIMATION = 18;
public static final int NAMED_ENTITY_SPAWN = 20;
/**
* Removed in 1.4.6 and replaced with VEHICLE_SPAWN.
* @see <a href="http://www.wiki.vg/Protocol_History#2012-12-20">Protocol History - MinecraftCoalition</a>
*/
@Deprecated()
public static final int PICKUP_SPAWN = 21;
public static final int COLLECT = 22;
public static final int VEHICLE_SPAWN = 23;
public static final int MOB_SPAWN = 24;
public static final int ENTITY_PAINTING = 25;
public static final int ADD_EXP_ORB = 26;
public static final int ENTITY_VELOCITY = 28;
public static final int DESTROY_ENTITY = 29;
public static final int ENTITY = 30;
public static final int REL_ENTITY_MOVE = 31;
public static final int ENTITY_LOOK = 32;
public static final int REL_ENTITY_MOVE_LOOK = 33;
public static final int ENTITY_TELEPORT = 34;
public static final int ENTITY_HEAD_ROTATION = 35;
public static final int ENTITY_STATUS = 38;
public static final int ATTACH_ENTITY = 39;
/**
* Sent when an entities DataWatcher is updated.
* <p>
* Remember to clone the packet if you are modifying it.
*/
public static final int ENTITY_METADATA = 40;
public static final int MOB_EFFECT = 41;
public static final int REMOVE_MOB_EFFECT = 42;
public static final int SET_EXPERIENCE = 43;
public static final int UPDATE_ATTRIBUTES = 44;
public static final int MAP_CHUNK = 51;
public static final int MULTI_BLOCK_CHANGE = 52;
public static final int BLOCK_CHANGE = 53;
public static final int PLAY_NOTE_BLOCK = 54;
public static final int BLOCK_BREAK_ANIMATION = 55;
public static final int MAP_CHUNK_BULK = 56;
public static final int EXPLOSION = 60;
public static final int WORLD_EVENT = 61;
public static final int NAMED_SOUND_EFFECT = 62;
public static final int WORLD_PARTICLES = 63;
public static final int BED = 70;
public static final int WEATHER = 71;
public static final int OPEN_WINDOW = 100;
public static final int CLOSE_WINDOW = 101;
public static final int SET_SLOT = 103;
public static final int WINDOW_ITEMS = 104;
public static final int CRAFT_PROGRESS_BAR = 105;
public static final int TRANSACTION = 106;
public static final int SET_CREATIVE_SLOT = 107;
public static final int UPDATE_SIGN = 130;
public static final int ITEM_DATA = 131;
/**
* Sent the first time a tile entity (chest inventory, etc.) is withing range of the player, or has been updated.
* <p>
* Remember to clone the packet if you are modifying it.
*/
public static final int TILE_ENTITY_DATA = 132;
public static final int OPEN_TILE_ENTITY = 133;
public static final int STATISTIC = 200;
public static final int PLAYER_INFO = 201;
public static final int ABILITIES = 202;
public static final int TAB_COMPLETE = 203;
public static final int SCOREBOARD_OBJECTIVE = 206;
public static final int UPDATE_SCORE = 207;
public static final int DISPLAY_SCOREBOARD = 208;
public static final int TEAMS = 209;
public static final int CUSTOM_PAYLOAD = 250;
public static final int KEY_RESPONSE = 252;
public static final int KEY_REQUEST = 253;
public static final int KICK_DISCONNECT = 255;
/**
* This packet was introduced in 1.7.2.
*/
public static final int PING_TIME = 230;
/**
* This packet was introduced in 1.7.2.
*/
public static final int LOGIN_SUCCESS = 232;
/**
* A registry that parses between names and packet IDs.
* @return The current server registry.
*/
public static Server getRegistry() {
return INSTANCE;
}
// We only allow a single instance of this class
private Server() {
super();
}
}
/**
* List of packets sent by the client.
* <p>
* Deprecated: Use {@link PacketType} instead.
* @author Kristian
*/
@Deprecated
public static class Client extends IntEnum {
/**
* The singleton instance. Can also be retrieved from the parent class.
*/
private static Client INSTANCE = new Client();
public static final int KEEP_ALIVE = 0;
public static final int LOGIN = 1;
public static final int HANDSHAKE = 2;
public static final int CHAT = 3;
public static final int USE_ENTITY = 7;
/**
* Since 1.3.1, the client no longer sends a respawn packet. Moved to CLIENT_COMMAND.
*/
@Deprecated
public static final int RESPAWN = 9;
public static final int FLYING = 10;
public static final int PLAYER_POSITION = 11;
public static final int PLAYER_LOOK = 12;
public static final int PLAYER_LOOK_MOVE = 13;
public static final int BLOCK_DIG = 14;
public static final int PLACE = 15;
public static final int BLOCK_ITEM_SWITCH = 16;
public static final int ARM_ANIMATION = 18;
public static final int ENTITY_ACTION = 19;
public static final int PLAYER_INPUT = 27;
public static final int CLOSE_WINDOW = 101;
public static final int WINDOW_CLICK = 102;
public static final int TRANSACTION = 106;
public static final int SET_CREATIVE_SLOT = 107;
public static final int BUTTON_CLICK = 108;
public static final int UPDATE_SIGN = 130;
public static final int ABILITIES = 202;
public static final int TAB_COMPLETE = 203;
public static final int LOCALE_AND_VIEW_DISTANCE = 204;
public static final int CLIENT_COMMAND = 205;
public static final int CUSTOM_PAYLOAD = 250;
public static final int KEY_RESPONSE = 252;
public static final int GET_INFO = 254;
public static final int KICK_DISCONNECT = 255;
/**
* This packet was introduced in 1.7.2.
*/
public static final int PING_TIME = 230;
/**
* This packet was introduced in 1.7.2.
*/
public static final int LOGIN_START = 231;
/**
* A registry that parses between names and packet IDs.
* @return The current client registry.
*/
public static Client getRegistry() {
return INSTANCE;
}
// Like above
private Client() {
super();
}
}
/**
* A registry that parses between names and packet IDs.
* <p>
* Deprecated: Use {@link PacketType} instead.
* @return The current client registry.
*/
@Deprecated
public static Server getServerRegistry() {
return Server.getRegistry();
}
/**
* A registry that parses between names and packet IDs.
* <p>
* Deprecated: Use {@link PacketType} instead.
* @return The current server registry.
*/
@Deprecated
public static Client getClientRegistry() {
return Client.INSTANCE;
}
/**
* Find a packet by name. Must be capitalized and use underscores.
* <p>
* Deprecated: Use {@link PacketType} instead.
* @param name - name of packet to find.
* @return The packet ID found.
*/
@Deprecated
public static int valueOf(String name) {
Integer serverAttempt = Server.INSTANCE.valueOf(name);
if (serverAttempt != null)
return serverAttempt;
else
return Client.INSTANCE.valueOf(name);
}
/**
* Retrieves the name of a packet.
* <p>
* Deprecated: Use {@link PacketType} instead.
* @param packetID - packet to retrieve name.
* @return The name, or NULL if unable to find such a packet.
*/
@Deprecated
public static String getDeclaredName(int packetID) {
String serverAttempt = Server.INSTANCE.getDeclaredName(packetID);
if (serverAttempt != null)
return serverAttempt;
else
return Client.INSTANCE.getDeclaredName(packetID);
}
}

33
src/main/java/com/comphenix/protocol/ProtocolLib.java
View File

@ -26,21 +26,8 @@ import java.util.logging.Logger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.bukkit.Server;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.PluginCommand;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;
import com.comphenix.protocol.executors.BukkitExecutors;
import com.comphenix.protocol.async.AsyncFilterManager;
import com.comphenix.protocol.error.BasicErrorReporter;
import com.comphenix.protocol.error.DelegatedErrorReporter;
import com.comphenix.protocol.error.DetailedErrorReporter;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.error.*;
import com.comphenix.protocol.injector.DelayedSingleTask;
import com.comphenix.protocol.injector.InternalManager;
import com.comphenix.protocol.injector.PacketFilterManager;
@ -55,7 +42,13 @@ import com.comphenix.protocol.utility.MinecraftVersion;
import com.google.common.base.Splitter;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
import com.google.common.util.concurrent.ListeningScheduledExecutorService;
import org.bukkit.Server;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.PluginCommand;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;
/**
* The main entry point for ProtocolLib.
@ -112,10 +105,6 @@ public class ProtocolLib extends JavaPlugin {
// Metrics and statistics
private Statistics statistics;
// Executors
private static ListeningScheduledExecutorService executorAsync;
private static ListeningScheduledExecutorService executorSync;
// Structure compiler
private BackgroundCompiler backgroundCompiler;
@ -157,10 +146,6 @@ public class ProtocolLib extends JavaPlugin {
// Initialize enhancer factory
EnhancerFactory.getInstance().setClassLoader(getClassLoader());
// Initialize executors
executorAsync = BukkitExecutors.newAsynchronous(this);
executorSync = BukkitExecutors.newSynchronous(this);
// Add global parameters
DetailedErrorReporter detailedReporter = new DetailedErrorReporter(this);
reporter = getFilteredReporter(detailedReporter);
@ -213,7 +198,7 @@ public class ProtocolLib extends JavaPlugin {
.build();
// Initialize the API
ProtocolLibrary.init(this, config, protocolManager, reporter, executorAsync, executorSync);
ProtocolLibrary.init(this, config, protocolManager, reporter);
// Setup error reporter
detailedReporter.addGlobalParameter("manager", protocolManager);

35
src/main/java/com/comphenix/protocol/ProtocolLibrary.java
View File

@ -19,12 +19,11 @@ package com.comphenix.protocol;
import java.util.Arrays;
import java.util.List;
import org.apache.commons.lang.Validate;
import org.bukkit.plugin.Plugin;
import com.comphenix.protocol.error.BasicErrorReporter;
import com.comphenix.protocol.error.ErrorReporter;
import com.google.common.util.concurrent.ListeningScheduledExecutorService;
import org.apache.commons.lang.Validate;
import org.bukkit.plugin.Plugin;
/**
* The main entry point for ProtocolLib.
@ -56,21 +55,15 @@ public class ProtocolLibrary {
private static ProtocolManager manager;
private static ErrorReporter reporter = new BasicErrorReporter();
private static ListeningScheduledExecutorService executorAsync;
private static ListeningScheduledExecutorService executorSync;
private static boolean updatesDisabled;
private static boolean initialized;
protected static void init(Plugin plugin, ProtocolConfig config, ProtocolManager manager, ErrorReporter reporter,
ListeningScheduledExecutorService executorAsync, ListeningScheduledExecutorService executorSync) {
protected static void init(Plugin plugin, ProtocolConfig config, ProtocolManager manager, ErrorReporter reporter) {
Validate.isTrue(!initialized, "ProtocolLib has already been initialized.");
ProtocolLibrary.plugin = plugin;
ProtocolLibrary.config = config;
ProtocolLibrary.manager = manager;
ProtocolLibrary.reporter = reporter;
ProtocolLibrary.executorAsync = executorAsync;
ProtocolLibrary.executorSync = executorSync;
initialized = true;
}
@ -106,26 +99,6 @@ public class ProtocolLibrary {
return reporter;
}
/**
* Retrieve an executor service for performing asynchronous tasks on the behalf of ProtocolLib.
* <p>
* Note that this service is NULL if ProtocolLib has not been initialized yet.
* @return The executor service, or NULL.
*/
public static ListeningScheduledExecutorService getExecutorAsync() {
return executorAsync;
}
/**
* Retrieve an executor service for performing synchronous tasks (main thread) on the behalf of ProtocolLib.
* <p>
* Note that this service is NULL if ProtocolLib has not been initialized yet.
* @return The executor service, or NULL.
*/
public static ListeningScheduledExecutorService getExecutorSync() {
return executorSync;
}
/**
* Disables the ProtocolLib update checker.
*/

104
src/main/java/com/comphenix/protocol/ProtocolManager.java
View File

@ -49,7 +49,7 @@ public interface ProtocolManager extends PacketStream {
* @param player - the player.
* @return The associated protocol version, or {@link Integer#MIN_VALUE} if unknown.
*/
public int getProtocolVersion(Player player);
int getProtocolVersion(Player player);
/**
* Send a packet to the given player.
@ -63,7 +63,7 @@ public interface ProtocolManager extends PacketStream {
* @throws InvocationTargetException - if an error occurred when sending the packet.
*/
@Override
public void sendServerPacket(Player receiver, PacketContainer packet, boolean filters)
void sendServerPacket(Player receiver, PacketContainer packet, boolean filters)
throws InvocationTargetException;
/**
@ -79,7 +79,7 @@ public interface ProtocolManager extends PacketStream {
* @throws IllegalAccessException If the underlying method caused an error.
*/
@Override
public void recieveClientPacket(Player sender, PacketContainer packet, boolean filters)
void recieveClientPacket(Player sender, PacketContainer packet, boolean filters)
throws IllegalAccessException, InvocationTargetException;
/**
@ -87,7 +87,7 @@ public interface ProtocolManager extends PacketStream {
* @param packet - the packet to broadcast.
* @throws FieldAccessException If we were unable to send the packet due to reflection problems.
*/
public void broadcastServerPacket(PacketContainer packet);
void broadcastServerPacket(PacketContainer packet);
/**
* Broadcast a packet to every player that is receiving information about a given entity.
@ -99,7 +99,7 @@ public interface ProtocolManager extends PacketStream {
* @param includeTracker - whether or not to also transmit the packet to the entity, if it is a tracker.
* @throws FieldAccessException If we were unable to send the packet due to reflection problems.
*/
public void broadcastServerPacket(PacketContainer packet, Entity entity, boolean includeTracker);
void broadcastServerPacket(PacketContainer packet, Entity entity, boolean includeTracker);
/**
* Broadcast a packet to every player within the given maximum observer distance.
@ -107,13 +107,13 @@ public interface ProtocolManager extends PacketStream {
* @param origin - the origin to consider when calculating the distance to each observer.
* @param maxObserverDistance - the maximum distance to the origin.
*/
public void broadcastServerPacket(PacketContainer packet, Location origin, int maxObserverDistance);
void broadcastServerPacket(PacketContainer packet, Location origin, int maxObserverDistance);
/**
* Retrieves a list of every registered packet listener.
* @return Every registered packet listener.
*/
public ImmutableSet<PacketListener> getPacketListeners();
ImmutableSet<PacketListener> getPacketListeners();
/**
* Adds a packet listener.
@ -123,7 +123,7 @@ public interface ProtocolManager extends PacketStream {
* can register it again.
* @param listener - new packet listener.
*/
public void addPacketListener(PacketListener listener);
void addPacketListener(PacketListener listener);
/**
* Removes a given packet listener.
@ -131,47 +131,20 @@ public interface ProtocolManager extends PacketStream {
* Attempting to remove a listener that doesn't exist has no effect.
* @param listener - the packet listener to remove.
*/
public void removePacketListener(PacketListener listener);
void removePacketListener(PacketListener listener);
/**
* Removes every listener associated with the given plugin.
* @param plugin - the plugin to unload.
*/
public void removePacketListeners(Plugin plugin);
void removePacketListeners(Plugin plugin);
/**
* Constructs a new encapsulated Minecraft packet with the given ID.
* <p>
* Deprecated: Use {@link #createPacket(PacketType)} instead.
* @param id - packet ID.
* @return New encapsulated Minecraft packet.
*/
@Deprecated
public PacketContainer createPacket(int id);
/**
* Constructs a new encapsulated Minecraft packet with the given ID.
* @param type - packet type.
* @return New encapsulated Minecraft packet.
*/
public PacketContainer createPacket(PacketType type);
/**
* Constructs a new encapsulated Minecraft packet with the given ID.
* <p>
* If set to true, the <i>forceDefaults</i> option will force the system to automatically
* give non-primitive fields in the packet sensible default values. For instance, certain
* packets - like Packet60Explosion - require a List or Set to be non-null. If the
* forceDefaults option is true, the List or Set will be automatically created.
* <p>
* Deprecated: Use {@link #createPacket(PacketType, boolean)} instead.
*
* @param id - packet ID.
* @param forceDefaults - TRUE to use sensible defaults in most fields, FALSE otherwise.
* @return New encapsulated Minecraft packet.
*/
@Deprecated
public PacketContainer createPacket(int id, boolean forceDefaults);
PacketContainer createPacket(PacketType type);
/**
* Constructs a new encapsulated Minecraft packet with the given ID.
@ -185,18 +158,7 @@ public interface ProtocolManager extends PacketStream {
* @param forceDefaults - TRUE to use sensible defaults in most fields, FALSE otherwise.
* @return New encapsulated Minecraft packet.
*/
public PacketContainer createPacket(PacketType type, boolean forceDefaults);
/**
* Construct a packet using the special builtin Minecraft constructors.
* <p>
* Deprecated: Use {@link #createPacketConstructor(PacketType, Object...)} instead.
* @param id - the packet ID.
* @param arguments - arguments that will be passed to the constructor.
* @return The packet constructor.
*/
@Deprecated
public PacketConstructor createPacketConstructor(int id, Object... arguments);
PacketContainer createPacket(PacketType type, boolean forceDefaults);
/**
* Construct a packet using the special builtin Minecraft constructors.
@ -204,7 +166,7 @@ public interface ProtocolManager extends PacketStream {
* @param arguments - arguments that will be passed to the constructor.
* @return The packet constructor.
*/
public PacketConstructor createPacketConstructor(PacketType type, Object... arguments);
PacketConstructor createPacketConstructor(PacketType type, Object... arguments);
/**
* Completely resend an entity to a list of clients.
@ -214,7 +176,7 @@ public interface ProtocolManager extends PacketStream {
* @param entity - entity to refresh.
* @param observers - the clients to update.
*/
public void updateEntity(Entity entity, List<Player> observers) throws FieldAccessException;
void updateEntity(Entity entity, List<Player> observers) throws FieldAccessException;
/**
* Retrieve the associated entity.
@ -223,7 +185,7 @@ public interface ProtocolManager extends PacketStream {
* @return The associated entity.
* @throws FieldAccessException Reflection failed.
*/
public Entity getEntityFromID(World container, int id) throws FieldAccessException;
Entity getEntityFromID(World container, int id) throws FieldAccessException;
/**
* Retrieve every client that is receiving information about a given entity.
@ -231,55 +193,37 @@ public interface ProtocolManager extends PacketStream {
* @return Every client/player that is tracking the given entity.
* @throws FieldAccessException If reflection failed.
*/
public List<Player> getEntityTrackers(Entity entity) throws FieldAccessException;
/**
* Retrieves a immutable set containing the ID of the sent server packets that will be observed by listeners.
* <p>
* Deprecated: Use {@link #getSendingFilterTypes()} instead.
* @return Every filtered server packet.
*/
@Deprecated
public Set<Integer> getSendingFilters();
List<Player> getEntityTrackers(Entity entity) throws FieldAccessException;
/**
* Retrieves a immutable set containing the type of the sent server packets that will be observed by listeners.
* @return Every filtered server packet.
*/
public Set<PacketType> getSendingFilterTypes();
/**
* Retrieves a immutable set containing the ID of the received client packets that will be observed by listeners.
* <p>
* Deprecated: Use {@link #getReceivingFilterTypes()} instead.
* @return Every filtered client packet.
*/
@Deprecated
public Set<Integer> getReceivingFilters();
Set<PacketType> getSendingFilterTypes();
/**
* Retrieves a immutable set containing the type of the received client packets that will be observed by listeners.
* @return Every filtered client packet.
*/
public Set<PacketType> getReceivingFilterTypes();
Set<PacketType> getReceivingFilterTypes();
/**
* Retrieve the current Minecraft version.
* @return The current version.
*/
public MinecraftVersion getMinecraftVersion();
MinecraftVersion getMinecraftVersion();
/**
* Determines whether or not this protocol manager has been disabled.
* @return TRUE if it has, FALSE otherwise.
*/
public boolean isClosed();
boolean isClosed();
/**
* Retrieve the current asynchronous packet manager.
* @return Asynchronous packet manager.
*/
public AsynchronousManager getAsynchronousManager();
AsynchronousManager getAsynchronousManager();
public void verifyWhitelist(PacketListener listener, ListeningWhitelist whitelist);
void verifyWhitelist(PacketListener listener, ListeningWhitelist whitelist);
}

25
src/main/java/com/comphenix/protocol/async/AsyncFilterManager.java
View File

@ -23,10 +23,6 @@ import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicInteger;
import org.bukkit.entity.Player;
import org.bukkit.plugin.Plugin;
import org.bukkit.scheduler.BukkitScheduler;
import com.comphenix.protocol.AsynchronousManager;
import com.comphenix.protocol.PacketStream;
import com.comphenix.protocol.PacketType;
@ -37,12 +33,15 @@ import com.comphenix.protocol.events.PacketEvent;
import com.comphenix.protocol.events.PacketListener;
import com.comphenix.protocol.injector.PrioritizedListener;
import com.comphenix.protocol.injector.SortedPacketListenerList;
import com.comphenix.protocol.injector.packet.PacketRegistry;
import com.google.common.base.Objects;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
import org.bukkit.entity.Player;
import org.bukkit.plugin.Plugin;
import org.bukkit.scheduler.BukkitScheduler;
/**
* Represents a filter manager for asynchronous packets.
* <p>
@ -88,7 +87,7 @@ public class AsyncFilterManager implements AsynchronousManager {
// Initialize timeout listeners
this.serverTimeoutListeners = new SortedPacketListenerList();
this.clientTimeoutListeners = new SortedPacketListenerList();
this.timeoutListeners = Sets.newSetFromMap(new ConcurrentHashMap<PacketListener, Boolean>());
this.timeoutListeners = Sets.newSetFromMap(new ConcurrentHashMap<>());
this.playerSendingHandler = new PlayerSendingHandler(reporter, serverTimeoutListeners, clientTimeoutListeners);
this.serverProcessingQueue = new PacketProcessingQueue(playerSendingHandler);
@ -327,22 +326,12 @@ public class AsyncFilterManager implements AsynchronousManager {
getProcessingQueue(syncPacket).enqueue(newEvent, true);
}
}
@Override
public Set<Integer> getSendingFilters() {
return PacketRegistry.toLegacy(serverProcessingQueue.keySet());
}
@Override
public Set<PacketType> getReceivingTypes() {
return serverProcessingQueue.keySet();
}
@Override
public Set<Integer> getReceivingFilters() {
return PacketRegistry.toLegacy(clientProcessingQueue.keySet());
}
@Override
public Set<PacketType> getSendingTypes() {
return clientProcessingQueue.keySet();

131
src/main/java/com/comphenix/protocol/events/ListeningWhitelist.java
View File

@ -17,11 +17,7 @@
package com.comphenix.protocol.events;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.EnumSet;
import java.util.Set;
import java.util.*;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.injector.GamePhase;
@ -44,93 +40,21 @@ public class ListeningWhitelist {
private final GamePhase gamePhase;
private final Set<ListenerOptions> options;
private final Set<PacketType> types;
// Cache whitelist
private transient Set<Integer> intWhitelist;
private ListeningWhitelist(Builder builder) {
this.priority = builder.priority;
this.types = builder.types;
this.gamePhase = builder.gamePhase;
this.options = builder.options;
}
/**
* Creates a packet whitelist for a given priority with a set of packet IDs.
* <p>
* Deprecated: Use {@link #newBuilder()} instead.
* @param priority - the listener priority.
* @param whitelist - set of IDs to observe/enable.
*/
@Deprecated
public ListeningWhitelist(ListenerPriority priority, Set<Integer> whitelist) {
this(priority, whitelist, GamePhase.PLAYING);
}
/**
* Creates a packet whitelist for a given priority with a set of packet IDs.
* <p>
* Deprecated: Use {@link #newBuilder()} instead.
* @param priority - the listener priority.
* @param whitelist - set of IDs to observe/enable.
* @param gamePhase - which game phase to receieve notifications on.
*/
@Deprecated
public ListeningWhitelist(ListenerPriority priority, Set<Integer> whitelist, GamePhase gamePhase) {
private ListeningWhitelist(ListenerPriority priority) {
this.priority = priority;
this.types = PacketRegistry.toPacketTypes(safeSet(whitelist));
this.gamePhase = gamePhase;
this.options = EnumSet.noneOf(ListenerOptions.class);
}
/**
* Creates a packet whitelist of a given priority for a list of packets.
* <p>
* Deprecated: Use {@link #newBuilder()} instead.
* @param priority - the listener priority.
* @param whitelist - list of packet IDs to observe/enable.
*/
@Deprecated
public ListeningWhitelist(ListenerPriority priority, Integer... whitelist) {
this.priority = priority;
this.types = PacketRegistry.toPacketTypes(Sets.newHashSet(whitelist));
this.types = new HashSet<>();
this.gamePhase = GamePhase.PLAYING;
this.options = EnumSet.noneOf(ListenerOptions.class);
}
/**
* Creates a packet whitelist for a given priority with a set of packet IDs.
* <p>
* Deprecated: Use {@link #newBuilder()} instead.
* @param priority - the listener priority.
* @param whitelist - list of packet IDs to observe/enable.
* @param gamePhase - which game phase to receieve notifications on.
*/
@Deprecated
public ListeningWhitelist(ListenerPriority priority, Integer[] whitelist, GamePhase gamePhase) {
this.priority = priority;
this.types = PacketRegistry.toPacketTypes(Sets.newHashSet(whitelist));
this.gamePhase = gamePhase;
this.options = EnumSet.noneOf(ListenerOptions.class);
}
/**
* Creates a packet whitelist for a given priority with a set of packet IDs and options.
* <p>
* Deprecated: Use {@link #newBuilder()} instead.
* @param priority - the listener priority.
* @param whitelist - list of packet IDs to observe/enable.
* @param gamePhase - which game phase to receieve notifications on.
* @param options - every special option associated with this whitelist.
*/
@Deprecated
public ListeningWhitelist(ListenerPriority priority, Integer[] whitelist, GamePhase gamePhase, ListenerOptions... options) {
this.priority = priority;
this.types = PacketRegistry.toPacketTypes(Sets.newHashSet(whitelist));
this.gamePhase = gamePhase;
this.options = safeEnumSet(Arrays.asList(options), ListenerOptions.class);
}
/**
* Whether or not this whitelist has any enabled packets.
* @return TRUE if there are any packets, FALSE otherwise.
@ -147,19 +71,6 @@ public class ListeningWhitelist {
return priority;
}
/**
* Retrieves the list of packets that will be observed by the listeners.
* <p>
* Deprecated: Use {@link #getTypes()} instead.
* @return Packet whitelist.
*/
@Deprecated
public Set<Integer> getWhitelist() {
if (intWhitelist == null)
intWhitelist = PacketRegistry.toLegacy(types);
return intWhitelist;
}
/**
* Retrieves a set of the packets that will be observed by the listeners.
* @return Packet whitelist.
@ -189,23 +100,6 @@ public class ListeningWhitelist {
return Objects.hashCode(priority, types, gamePhase, options);
}
/**
* Determine if any of the given IDs can be found in the whitelist.
* @param whitelist - whitelist to test.
* @param idList - list of packet IDs to find.
* @return TRUE if any of the packets in the list can be found in the whitelist, FALSE otherwise.
*/
public static boolean containsAny(ListeningWhitelist whitelist, int... idList) {
if (whitelist != null) {
for (int i = 0; i < idList.length; i++) {
if (whitelist.getWhitelist().contains(idList[i]))
return true;
}
}
return false;
}
/**
* Determine if the given whitelist is empty or not.
* @param whitelist - the whitelist to test.
@ -273,7 +167,7 @@ public class ListeningWhitelist {
/**
* Construct a copy of a given set.
* @param list - the set to copy.
* @param set - the set to copy.
* @return The copied set.
*/
private static <T> Set<T> safeSet(Collection<T> set) {
@ -364,20 +258,7 @@ public class ListeningWhitelist {
public Builder high() {
return priority(ListenerPriority.HIGH);
}
/**
* Set the whitelist of packet IDs to copy when constructing new whitelists.
* <p>
* Deprecated: Use {@link #types(Collection)} instead.
* @param whitelist - the whitelist of packets.
* @return This builder, for chaining.
*/
@Deprecated
public Builder whitelist(Collection<Integer> whitelist) {
this.types = PacketRegistry.toPacketTypes(safeSet(whitelist));
return this;
}
/**
* Set the whitelist of packet types to copy when constructing new whitelists.
* @param types - the whitelist of packets.

29
src/main/java/com/comphenix/protocol/events/MonitorAdapter.java
View File

@ -17,15 +17,11 @@
package com.comphenix.protocol.events;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.bukkit.plugin.Plugin;
import com.comphenix.protocol.Packets;
import com.comphenix.protocol.injector.GamePhase;
import com.comphenix.protocol.injector.packet.PacketRegistry;
import com.comphenix.protocol.reflect.FieldAccessException;
import org.bukkit.plugin.Plugin;
/**
* Represents a listener that is notified of every sent and received packet.
@ -45,26 +41,17 @@ public abstract class MonitorAdapter implements PacketListener {
public MonitorAdapter(Plugin plugin, ConnectionSide side, Logger logger) {
initialize(plugin, side, logger);
}
@SuppressWarnings("deprecation")
private void initialize(Plugin plugin, ConnectionSide side, Logger logger) {
this.plugin = plugin;
// Recover in case something goes wrong
try {
if (side.isForServer())
this.sending = ListeningWhitelist.newBuilder().monitor().types(PacketRegistry.getServerPacketTypes()).gamePhaseBoth().build();
if (side.isForClient())
this.receiving = ListeningWhitelist.newBuilder().monitor().types(PacketRegistry.getClientPacketTypes()).gamePhaseBoth().build();
} catch (FieldAccessException e) {
if (side.isForServer())
this.sending = new ListeningWhitelist(ListenerPriority.MONITOR, Packets.Server.getRegistry().values(), GamePhase.BOTH);
if (side.isForClient())
this.receiving = new ListeningWhitelist(ListenerPriority.MONITOR, Packets.Client.getRegistry().values(), GamePhase.BOTH);
logger.log(Level.WARNING, "Defaulting to 1.3 packets.", e);
}
if (side.isForServer())
this.sending = ListeningWhitelist.newBuilder().monitor().types(PacketRegistry.getServerPacketTypes()).gamePhaseBoth().build();
if (side.isForClient())
this.receiving = ListeningWhitelist.newBuilder().monitor().types(PacketRegistry.getClientPacketTypes()).gamePhaseBoth().build();
}
/**
* Retrieve a logger, even if we're running in a CraftBukkit version that doesn't support it.
* @param plugin - the plugin to retrieve.

213
src/main/java/com/comphenix/protocol/events/PacketAdapter.java
View File

@ -19,19 +19,17 @@ package com.comphenix.protocol.events;
import java.util.List;
import java.util.Set;
import javax.annotation.Nonnull;
import org.bukkit.plugin.Plugin;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.injector.GamePhase;
import com.comphenix.protocol.injector.packet.PacketRegistry;
import com.google.common.base.Preconditions;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import org.bukkit.plugin.Plugin;
/**
* Represents a packet listener with useful constructors.
* <p>
@ -103,151 +101,7 @@ public abstract class PacketAdapter implements PacketListener {
public PacketAdapter(Plugin plugin, ListenerPriority listenerPriority, PacketType... types) {
this(params(plugin, types).listenerPriority(listenerPriority));
}
/**
* Initialize a packet listener with default priority.
* <p>
* Deprecated: Use {@link #params()} instead.
* @param plugin - the plugin that spawned this listener.
* @param connectionSide - the packet type the listener is looking for.
* @param packets - the packet IDs the listener is looking for.
*/
@Deprecated
public PacketAdapter(Plugin plugin, ConnectionSide connectionSide, Integer... packets) {
this(plugin, connectionSide, ListenerPriority.NORMAL, packets);
}
/**
* Initialize a packet listener for a single connection side.
* <p>
* Deprecated: Use {@link #params()} instead.
* @param plugin - the plugin that spawned this listener.
* @param connectionSide - the packet type the listener is looking for.
* @param listenerPriority - the event priority.
* @param packets - the packet IDs the listener is looking for.
*/
@Deprecated
public PacketAdapter(Plugin plugin, ConnectionSide connectionSide, ListenerPriority listenerPriority, Set<Integer> packets) {
this(plugin, connectionSide, listenerPriority, GamePhase.PLAYING, packets.toArray(new Integer[0]));
}
/**
* Initialize a packet listener for a single connection side.
* <p>
* The game phase is used to optimize performance. A listener should only choose BOTH or LOGIN if it's absolutely necessary.
* <p>
* Deprecated: Use {@link #params()} instead.
* @param plugin - the plugin that spawned this listener.
* @param connectionSide - the packet type the listener is looking for.
* @param gamePhase - which game phase this listener is active under.
* @param packets - the packet IDs the listener is looking for.
*/
@Deprecated
public PacketAdapter(Plugin plugin, ConnectionSide connectionSide, GamePhase gamePhase, Set<Integer> packets) {
this(plugin, connectionSide, ListenerPriority.NORMAL, gamePhase, packets.toArray(new Integer[0]));
}
/**
* Initialize a packet listener for a single connection side.
* <p>
* The game phase is used to optimize performance. A listener should only choose BOTH or LOGIN if it's absolutely necessary.
* <p>
* Deprecated: Use {@link #params()} instead.
* @param plugin - the plugin that spawned this listener.
* @param connectionSide - the packet type the listener is looking for.
* @param listenerPriority - the event priority.
* @param gamePhase - which game phase this listener is active under.
* @param packets - the packet IDs the listener is looking for.
*/
@Deprecated
public PacketAdapter(Plugin plugin, ConnectionSide connectionSide, ListenerPriority listenerPriority, GamePhase gamePhase, Set<Integer> packets) {
this(plugin, connectionSide, listenerPriority, gamePhase, packets.toArray(new Integer[0]));
}
/**
* Initialize a packet listener for a single connection side.
* <p>
* Deprecated: Use {@link #params()} instead.
* @param plugin - the plugin that spawned this listener.
* @param connectionSide - the packet type the listener is looking for.
* @param listenerPriority - the event priority.
* @param packets - the packet IDs the listener is looking for.
*/
@Deprecated
public PacketAdapter(Plugin plugin, ConnectionSide connectionSide, ListenerPriority listenerPriority, Integer... packets) {
this(plugin, connectionSide, listenerPriority, GamePhase.PLAYING, packets);
}
/**
* Initialize a packet listener for a single connection side.
* <p>
* Deprecated: Use {@link #params()} instead.
* @param plugin - the plugin that spawned this listener.
* @param connectionSide - the packet type the listener is looking for.
* @param options - which listener options to use.
* @param packets - the packet IDs the listener is looking for.
*/
@Deprecated
public PacketAdapter(Plugin plugin, ConnectionSide connectionSide, ListenerOptions[] options, Integer... packets) {
this(plugin, connectionSide, ListenerPriority.NORMAL, GamePhase.PLAYING, options, packets);
}
/**
* Initialize a packet listener for a single connection side.
* <p>
* Deprecated: Use {@link #params()} instead.
* @param plugin - the plugin that spawned this listener.
* @param connectionSide - the packet type the listener is looking for.
* @param gamePhase - which game phase this listener is active under.
* @param packets - the packet IDs the listener is looking for.
*/
@Deprecated
public PacketAdapter(Plugin plugin, ConnectionSide connectionSide, GamePhase gamePhase, Integer... packets) {
this(plugin, connectionSide, ListenerPriority.NORMAL, gamePhase, packets);
}
/**
* Initialize a packet listener for a single connection side.
* <p>
* The game phase is used to optimize performance. A listener should only choose BOTH or LOGIN if it's absolutely necessary.
* <p>
* Deprecated: Use {@link #params()} instead.
* @param plugin - the plugin that spawned this listener.
* @param connectionSide - the packet type the listener is looking for.
* @param listenerPriority - the event priority.
* @param gamePhase - which game phase this listener is active under.
* @param packets - the packet IDs the listener is looking for.
*/
@Deprecated
public PacketAdapter(Plugin plugin, ConnectionSide connectionSide, ListenerPriority listenerPriority, GamePhase gamePhase, Integer... packets) {
this(plugin, connectionSide, listenerPriority, gamePhase, new ListenerOptions[0], packets);
}
/**
* Initialize a packet listener for a single connection side.
* <p>
* The game phase is used to optimize performance. A listener should only choose BOTH or LOGIN if it's absolutely necessary.
* <p>
* Listener options must be specified in order for {@link NetworkMarker#getInputBuffer()} to function correctly.
* <p>
* Deprecated: Use {@link #params()} instead.
* @param plugin - the plugin that spawned this listener.
* @param connectionSide - the packet type the listener is looking for.
* @param listenerPriority - the event priority.
* @param gamePhase - which game phase this listener is active under.
* @param options - which listener options to use.
* @param packets - the packet IDs the listener is looking for.
*/
@Deprecated
public PacketAdapter(
Plugin plugin, ConnectionSide connectionSide, ListenerPriority listenerPriority,
GamePhase gamePhase, ListenerOptions[] options, Integer... packets) {
this(plugin, connectionSide, listenerPriority, gamePhase, options,
PacketRegistry.toPacketTypes(Sets.newHashSet(packets), connectionSide.getSender()).toArray(new PacketType[0])
);
}
// For internal use only
private PacketAdapter(
Plugin plugin, ConnectionSide connectionSide, ListenerPriority listenerPriority,
@ -374,20 +228,6 @@ public abstract class PacketAdapter implements PacketListener {
public static AdapterParameteters params() {
return new AdapterParameteters();
}
/**
* Construct a helper object for passing parameters to the packet adapter.
* <p>
* This is often simpler and better than passing them directly to each constructor.
* Deprecated: Use {@link #params(Plugin, PacketType...)} instead.
* @param plugin - the plugin that spawned this listener.
* @param packets - the packet IDs the listener is looking for.
* @return Helper object.
*/
@Deprecated
public static AdapterParameteters params(Plugin plugin, Integer... packets) {
return new AdapterParameteters().plugin(plugin).packets(packets);
}
/**
* Construct a helper object for passing parameters to the packet adapter.
@ -532,17 +372,7 @@ public abstract class PacketAdapter implements PacketListener {
public AdapterParameteters optionIntercept() {
return addOption(ListenerOptions.INTERCEPT_INPUT_BUFFER);
}
/**
* Set the listener option to {@link ListenerOptions#DISABLE_GAMEPHASE_DETECTION}, causing ProtocolLib to ignore automatic game phase detection.
* <p>
* This is no longer relevant in 1.7.2.
* @return This builder, for chaining.
*/
public AdapterParameteters optionManualGamePhase() {
return addOption(ListenerOptions.DISABLE_GAMEPHASE_DETECTION);
}
/**
* Set the listener option to {@link ListenerOptions#ASYNC}, indicating that our listener is thread safe.
* <p>
@ -552,40 +382,7 @@ public abstract class PacketAdapter implements PacketListener {
public AdapterParameteters optionAsync() {
return addOption(ListenerOptions.ASYNC);
}
/**
* Set the packet IDs of the packets the listener is looking for.
* <p>
* This parameter is required.
* <p>
* Deprecated: Use {@link #types(PacketType...)} instead.
* @param packets - the packet IDs to look for.
* @return This builder, for chaining.
*/
@Deprecated
public AdapterParameteters packets(@Nonnull Integer... packets) {
Preconditions.checkNotNull(packets, "packets cannot be NULL");
PacketType[] types = new PacketType[packets.length];
for (int i = 0; i < types.length; i++) {
types[i] = PacketType.findLegacy(packets[i]);
}
this.packets = types;
return this;
}
/**
* Set the packet IDs of the packets the listener is looking for.
* <p>
* This parameter is required.
* @param packets - a set of the packet IDs to look for.
* @return This builder, for chaining.
*/
@Deprecated
public AdapterParameteters packets(@Nonnull Set<Integer> packets) {
return packets(packets.toArray(new Integer[0]));
}
/**
* Set the packet types the listener is looking for.
* <p>

101
src/main/java/com/comphenix/protocol/events/PacketContainer.java
View File

@ -68,6 +68,7 @@ import org.bukkit.util.Vector;
*
* @author Kristian
*/
@SuppressWarnings("unused")
public class PacketContainer implements Serializable {
private static final long serialVersionUID = 3;
@ -111,40 +112,6 @@ public class PacketContainer implements Serializable {
private static final Set<PacketType> CLONING_UNSUPPORTED = Sets.newHashSet(
PacketType.Play.Server.UPDATE_ATTRIBUTES, PacketType.Status.Server.SERVER_INFO);
/**
* Creates a packet container for a new packet.
* <p>
* Deprecated: Use {@link #PacketContainer(PacketType)} instead.
* @param id - ID of the packet to create.
*/
@Deprecated
public PacketContainer(int id) {
this(PacketType.findLegacy(id), StructureCache.newPacket(PacketType.findLegacy(id)));
}
/**
* Creates a packet container for an existing packet.
* @param id - ID of the given packet.
* @param handle - contained packet.
* @deprecated Use {@link #PacketContainer(PacketType, Object)} instead
*/
@Deprecated
public PacketContainer(int id, Object handle) {
this(PacketType.findLegacy(id), handle);
}
/**
* Creates a packet container for an existing packet.
* @param id - ID of the given packet.
* @param handle - contained packet.
* @param structure - structure modifier.
* @deprecated Use {@link #PacketContainer(PacketType, Object, StructureModifier)} instead
*/
@Deprecated
public PacketContainer(int id, Object handle, StructureModifier<Object> structure) {
this(PacketType.findLegacy(id), handle, structure);
}
/**
* Creates a packet container for a new packet.
* @param type - the type of the packet to create.
@ -1035,16 +1002,13 @@ public class PacketContainer implements Serializable {
}
/**
* Retrieves the ID of this packet.
* <p>
* Deprecated: Use {@link #getType()} instead.
* @return Packet ID.
* @deprecated Packet IDs are unreliable
*/
@Deprecated
public int getID() {
return type.getLegacyId();
public int getId() {
return type.getCurrentId();
}
/**
* Retrieve the packet type of this packet.
* @return The packet type.
@ -1230,61 +1194,6 @@ public class PacketContainer implements Serializable {
PacketMetadata.remove(handle, key);
}
// ---- Old Metadata API
// Scheduled for removal in 4.5
/**
* Gets the metadata value for a given key.
*
* @param key Metadata key
* @return Metadata value, or null if nonexistent.
* @deprecated Replaced with {@link #getMeta(String)}
*/
@Deprecated
public Object getMetadata(String key) {
return getMeta(key).orElse(null);
}
/**
* Adds metadata to this packet.
* <p>
* Note: Since metadata is lazily initialized, this may result in the creation of the metadata map.
*
* @param key Metadata key
* @param value Metadata value
* @deprecated Replaced by {@link #setMeta(String, Object)}
*/
@Deprecated
public void addMetadata(String key, Object value) {
setMeta(key, value);
}
/**
* Removes metadata from this packet.
* <p>
* Note: If this operation leaves the metadata map empty, the map will be set to null.
*
* @param key Metadata key
* @return The previous value, or null if nonexistant.
* @deprecated Replaced by {@link #removeMeta(String)}. This one was pretty much just for naming consistency.
*/
@Deprecated
public Object removeMetadata(String key) {
return PacketMetadata.remove(handle, key).orElseGet(null);
}
/**
* Whether or not this packet has metadata for a given key.
*
* @param key Metadata key
* @return True if this packet has metadata for the key, false if not.
* @deprecated Replaced with {@code getMeta(key).isPresent()}
*/
@Deprecated
public boolean hasMetadata(String key) {
return getMeta(key).isPresent();
}
/**
* Retrieve the cached method concurrently.
* @param lookup - a lazy lookup cache.

2
src/main/java/com/comphenix/protocol/events/PacketEvent.java
View File

@ -247,7 +247,7 @@ public class PacketEvent extends EventObject implements Cancellable {
*/
@Deprecated
public int getPacketID() {
return packet.getID();
return packet.getId();
}
/**

142
src/main/java/com/comphenix/protocol/executors/AbstractBukkitService.java
View File

@ -1,142 +0,0 @@
package com.comphenix.protocol.executors;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.*;
import com.google.common.base.Throwables;
import com.google.common.util.concurrent.ListenableScheduledFuture;
import org.bukkit.scheduler.BukkitTask;
abstract class AbstractBukkitService
extends AbstractListeningService implements BukkitScheduledExecutorService {
private static final long MILLISECONDS_PER_TICK = 50;
private static final long NANOSECONDS_PER_TICK = 1000000 * MILLISECONDS_PER_TICK;
private volatile boolean shutdown;
private final PendingTasks tasks;
public AbstractBukkitService(PendingTasks tasks) {
this.tasks = tasks;
}
@Override
protected <T> RunnableAbstractFuture<T> newTaskFor(Runnable runnable, T value) {
return newTaskFor(Executors.callable(runnable, value));
}
@Override
protected <T> RunnableAbstractFuture<T> newTaskFor(final Callable<T> callable) {
validateState();
return new CallableTask<T>(callable);
}
@Override
public void execute(Runnable command) {
validateState();
if (command instanceof RunnableFuture) {
tasks.add(getTask(command), (Future<?>) command);
} else {
// Submit it first
submit(command);
}
}
// Bridge to Bukkit
protected abstract BukkitTask getTask(Runnable command);
protected abstract BukkitTask getLaterTask(Runnable task, long ticks);
protected abstract BukkitTask getTimerTask(long ticksInitial, long ticksDelay, Runnable task);
@Override
public List<Runnable> shutdownNow() {
shutdown();
tasks.cancel();
// We don't support this
return Collections.emptyList();
}
@Override
public void shutdown() {
shutdown = true;
}
private void validateState() {
if (shutdown) {
throw new RejectedExecutionException("Executor service has shut down. Cannot start new tasks.");
}
}
private long toTicks(long delay, TimeUnit unit) {
return Math.round(unit.toMillis(delay) / (double)MILLISECONDS_PER_TICK);
}
@Override
public ListenableScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit) {
return schedule(Executors.callable(command), delay, unit);
}
@Override
public <V> ListenableScheduledFuture<V> schedule(Callable<V> callable, long delay, TimeUnit unit) {
long ticks = toTicks(delay, unit);
// Construct future task and Bukkit task
CallableTask<V> task = new CallableTask<V>(callable);
BukkitTask bukkitTask = getLaterTask(task, ticks);
tasks.add(bukkitTask, task);
return task.getScheduledFuture(System.nanoTime() + delay * NANOSECONDS_PER_TICK, 0);
}
@Override
public ListenableScheduledFuture<?> scheduleAtFixedRate(Runnable command, long initialDelay,
long period, TimeUnit unit) {
long ticksInitial = toTicks(initialDelay, unit);
long ticksDelay = toTicks(period, unit);
// Construct future task and Bukkit task
CallableTask<?> task = new CallableTask<Object>(Executors.callable(command)) {
protected void compute() {
// Do nothing more. This future can only be finished by cancellation
try {
compute.call();
} catch (Exception e) {
// Let Bukkit handle this
throw Throwables.propagate(e);
}
}
};
BukkitTask bukkitTask = getTimerTask(ticksInitial, ticksDelay, task);
tasks.add(bukkitTask, task);
return task.getScheduledFuture(
System.nanoTime() + ticksInitial * NANOSECONDS_PER_TICK,
ticksDelay * NANOSECONDS_PER_TICK);
}
// Not supported!
@Deprecated
@Override
public ListenableScheduledFuture<?> scheduleWithFixedDelay(Runnable command, long initialDelay, long delay, TimeUnit unit) {
return scheduleAtFixedRate(command, initialDelay, delay, unit);
}
@Override
public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
return tasks.awaitTermination(timeout, unit);
}
@Override
public boolean isShutdown() {
return shutdown;
}
@Override
public boolean isTerminated() {
return tasks.isTerminated();
}
}

288
src/main/java/com/comphenix/protocol/executors/AbstractListeningService.java
View File

@ -1,288 +0,0 @@
package com.comphenix.protocol.executors;
/*
* This file is a modified version of
* http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/main/java/util/concurrent/AbstractExecutorService.java?revision=1.35
* which contained the following notice:
*
* Written by Doug Lea with assistance from members of JCP JSR-166 Expert Group and released to the
* public domain, as explained at http://creativecommons.org/publicdomain/zero/1.0/
*
* Rationale for copying:
* Guava targets JDK5, whose AbstractExecutorService class lacks the newTaskFor protected
* customization methods needed by MoreExecutors.listeningDecorator. This class is a copy of
* AbstractExecutorService from the JSR166 CVS repository. It contains the desired methods.
*/
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorCompletionService;
import java.util.concurrent.Future;
import java.util.concurrent.RunnableFuture;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import com.google.common.util.concurrent.AbstractFuture;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListenableFutureTask;
import com.google.common.util.concurrent.ListeningExecutorService;
/**
* Provides default implementations of {@link ListeningExecutorService}
* execution methods. This class implements the <tt>submit</tt>,
* <tt>invokeAny</tt> and <tt>invokeAll</tt> methods using a
* {@link ListenableFutureTask} returned by <tt>newTaskFor</tt>. For example,
* the implementation of <tt>submit(Runnable)</tt> creates an associated
* <tt>ListenableFutureTask</tt> that is executed and returned.
*
* @author Doug Lea
*/
abstract class AbstractListeningService implements ListeningExecutorService {
/**
* Represents a runnable abstract listenable future task.
*
* @author Kristian
* @param <T>
*/
public static abstract class RunnableAbstractFuture<T>
extends AbstractFuture<T> implements RunnableFuture<T> {
}
/**
* Returns a <tt>ListenableFutureTask</tt> for the given runnable and
* default value.
*
* @param runnable - the runnable task being wrapped
* @param value - the default value for the returned future
* @return a <tt>ListenableFutureTask</tt> which when run will run the
* underlying runnable and which, as a <tt>Future</tt>, will yield
* the given value as its result and provide for cancellation of the
* underlying task.
*/
protected abstract <T> RunnableAbstractFuture<T> newTaskFor(Runnable runnable, T value);
/**
* Returns a <tt>ListenableFutureTask</tt> for the given callable task.
*
* @param callable - the callable task being wrapped
* @return a <tt>ListenableFutureTask</tt> which when run will call the
* underlying callable and which, as a <tt>Future</tt>, will yield
* the callable's result as its result and provide for cancellation
* of the underlying task.
*/
protected abstract <T> RunnableAbstractFuture<T> newTaskFor(Callable<T> callable);
@Override
public ListenableFuture<?> submit(Runnable task) {
if (task == null) {
throw new NullPointerException();
}
RunnableAbstractFuture<Void> ftask = newTaskFor(task, null);
execute(ftask);
return ftask;
}
@Override
public <T> ListenableFuture<T> submit(Runnable task, T result) {
if (task == null) {
throw new NullPointerException();
}
RunnableAbstractFuture<T> ftask = newTaskFor(task, result);
execute(ftask);
return ftask;
}
@Override
public <T> ListenableFuture<T> submit(Callable<T> task) {
if (task == null) {
throw new NullPointerException();
}
RunnableAbstractFuture<T> ftask = newTaskFor(task);
execute(ftask);
return ftask;
}
/**
* The main mechanics of invokeAny.
*/
private <T> T doInvokeAny(Collection<? extends Callable<T>> tasks, boolean timed, long nanos)
throws InterruptedException, ExecutionException, TimeoutException {
if (tasks == null) {
throw new NullPointerException();
}
int ntasks = tasks.size();
if (ntasks == 0) {
throw new IllegalArgumentException();
}
List<Future<T>> futures = new ArrayList<Future<T>>(ntasks);
ExecutorCompletionService<T> ecs = new ExecutorCompletionService<T>(this);
// For efficiency, especially in executors with limited
// parallelism, check to see if previously submitted tasks are
// done before submitting more of them. This interleaving
// plus the exception mechanics account for messiness of main
// loop.
try {
// Record exceptions so that if we fail to obtain any
// result, we can throw the last exception we got.
ExecutionException ee = null;
long lastTime = timed ? System.nanoTime() : 0;
Iterator<? extends Callable<T>> it = tasks.iterator();
// Start one task for sure; the rest incrementally
futures.add(ecs.submit(it.next()));
--ntasks;
int active = 1;
for (;;) {
Future<T> f = ecs.poll();
if (f == null) {
if (ntasks > 0) {
--ntasks;
futures.add(ecs.submit(it.next()));
++active;
} else if (active == 0) {
break;
} else if (timed) {
f = ecs.poll(nanos, TimeUnit.NANOSECONDS);
if (f == null) {
throw new TimeoutException();
}
long now = System.nanoTime();
nanos -= now - lastTime;
lastTime = now;
} else {
f = ecs.take();
}
}
if (f != null) {
--active;
try {
return f.get();
} catch (ExecutionException eex) {
ee = eex;
} catch (RuntimeException rex) {
ee = new ExecutionException(rex);
}
}
}
if (ee == null) {
ee = new ExecutionException(null);
}
throw ee;
} finally {
for (Future<T> f : futures)
f.cancel(true);
}
}
@Override
public <T> T invokeAny(Collection<? extends Callable<T>> tasks) throws InterruptedException,
ExecutionException {
try {
return doInvokeAny(tasks, false, 0);
} catch (TimeoutException cannotHappen) {
// assert false;
return null;
}
}
@Override
public <T> T invokeAny(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit)
throws InterruptedException, ExecutionException, TimeoutException {
return doInvokeAny(tasks, true, unit.toNanos(timeout));
}
@Override
public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks)
throws InterruptedException {
if (tasks == null) {
throw new NullPointerException();
}
List<Future<T>> futures = new ArrayList<Future<T>>(tasks.size());
boolean done = false;
try {
for (Callable<T> t : tasks) {
RunnableAbstractFuture<T> f = newTaskFor(t);
futures.add(f);
execute(f);
}
for (Future<T> f : futures) {
if (!f.isDone()) {
try {
f.get();
} catch (CancellationException | ExecutionException ignore) { }
}
}
done = true;
return futures;
} finally {
if (!done) {
for (Future<T> f : futures)
f.cancel(true);
}
}
}
@Override
public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks, long timeout,
TimeUnit unit) throws InterruptedException {
if (tasks == null || unit == null) {
throw new NullPointerException();
}
long nanos = unit.toNanos(timeout);
List<Future<T>> futures = new ArrayList<Future<T>>(tasks.size());
boolean done = false;
try {
for (Callable<T> t : tasks)
futures.add(newTaskFor(t));
long lastTime = System.nanoTime();
// Interleave time checks and calls to execute in case
// executor doesn't have any/much parallelism.
for (Future<T> future : futures) {
execute((Runnable) future);
long now = System.nanoTime();
nanos -= now - lastTime;
lastTime = now;
if (nanos <= 0) {
return futures;
}
}
for (Future<T> f : futures) {
if (!f.isDone()) {
if (nanos <= 0) {
return futures;
}
try {
f.get(nanos, TimeUnit.NANOSECONDS);
} catch (CancellationException | ExecutionException ignore) {
} catch (TimeoutException toe) {
return futures;
}
long now = System.nanoTime();
nanos -= now - lastTime;
lastTime = now;
}
}
done = true;
return futures;
} finally {
if (!done) {
for (Future<T> f : futures)
f.cancel(true);
}
}
}
}

93
src/main/java/com/comphenix/protocol/executors/BukkitExecutors.java
View File

@ -1,93 +0,0 @@
package com.comphenix.protocol.executors;
import org.bukkit.plugin.Plugin;
import org.bukkit.scheduler.BukkitScheduler;
import org.bukkit.scheduler.BukkitTask;
import com.comphenix.protocol.executors.AbstractBukkitService;
import com.comphenix.protocol.executors.BukkitScheduledExecutorService;
import com.comphenix.protocol.executors.PendingTasks;
import com.comphenix.protocol.executors.PluginDisabledListener;
import com.google.common.base.Preconditions;
public class BukkitExecutors {
private BukkitExecutors() {
// Don't make it constructable
}
/**
* Retrieves a scheduled executor service for running tasks on the main thread.
* @param plugin - plugin that is executing the given tasks.
* @return Executor service.
*/
public static BukkitScheduledExecutorService newSynchronous(final Plugin plugin) {
// Bridge destination
final BukkitScheduler scheduler = getScheduler(plugin);
Preconditions.checkNotNull(plugin, "plugin cannot be NULL");
BukkitScheduledExecutorService service = new com.comphenix.protocol.executors.AbstractBukkitService(new PendingTasks(plugin, scheduler)) {
@Override
protected BukkitTask getTask(Runnable command) {
return scheduler.runTask(plugin, command);
}
@Override
protected BukkitTask getLaterTask(Runnable task, long ticks) {
return scheduler.runTaskLater(plugin, task, ticks);
}
@Override
protected BukkitTask getTimerTask(long ticksInitial, long ticksDelay, Runnable task) {
return scheduler.runTaskTimer(plugin, task, ticksInitial, ticksDelay);
}
};
PluginDisabledListener.getListener(plugin).addService(service);
return service;
}
/**
* Retrieves a scheduled executor service for running asynchronous tasks.
* @param plugin - plugin that is executing the given tasks.
* @return Asynchronous executor service.
*/
public static BukkitScheduledExecutorService newAsynchronous(final Plugin plugin) {
// Bridge destination
final BukkitScheduler scheduler = getScheduler(plugin);
Preconditions.checkNotNull(plugin, "plugin cannot be NULL");
BukkitScheduledExecutorService service = new com.comphenix.protocol.executors.AbstractBukkitService(new PendingTasks(plugin, scheduler)) {
@Override
protected BukkitTask getTask(Runnable command) {
return scheduler.runTaskAsynchronously(plugin, command);
}
@Override
protected BukkitTask getLaterTask(Runnable task, long ticks) {
return scheduler.runTaskLaterAsynchronously(plugin, task, ticks);
}
@Override
protected BukkitTask getTimerTask(long ticksInitial, long ticksDelay, Runnable task) {
return scheduler.runTaskTimerAsynchronously(plugin, task, ticksInitial, ticksDelay);
}
};
PluginDisabledListener.getListener(plugin).addService(service);
return service;
}
/**
* Retrieve the current Bukkit scheduler.
* @return Current scheduler.
*/
private static BukkitScheduler getScheduler(Plugin plugin) {
BukkitScheduler scheduler = plugin.getServer().getScheduler();
if (scheduler != null) {
return scheduler;
} else {
throw new IllegalStateException("Unable to retrieve scheduler.");
}
}
}

103
src/main/java/com/comphenix/protocol/executors/BukkitFutures.java
View File

@ -1,103 +0,0 @@
package com.comphenix.protocol.executors;
import java.lang.reflect.Method;
import java.util.concurrent.atomic.AtomicBoolean;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.SettableFuture;
import org.bukkit.event.*;
import org.bukkit.plugin.EventExecutor;
import org.bukkit.plugin.IllegalPluginAccessException;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.RegisteredListener;
public class BukkitFutures {
// Represents empty classes
private static Listener EMPTY_LISTENER = new Listener() {};
/**
* Retrieve a future representing the next invocation of the given event.
* @param plugin - owner plugin.
* @return Future event invocation.
*/
public static <TEvent extends Event> ListenableFuture<TEvent> nextEvent(Plugin plugin, Class<TEvent> eventClass) {
return BukkitFutures.nextEvent(plugin, eventClass, EventPriority.NORMAL, false);
}
/**
* Retrieve a future representing the next invocation of the given event.
* @param plugin - owner plugin.
* @return Future event invocation.
*/
public static <TEvent extends Event> ListenableFuture<TEvent> nextEvent(
Plugin plugin, Class<TEvent> eventClass, EventPriority priority, boolean ignoreCancelled) {
// Event and future
final HandlerList list = getHandlerList(eventClass);
final SettableFuture<TEvent> future = SettableFuture.create();
EventExecutor executor = new EventExecutor() {
private final AtomicBoolean once = new AtomicBoolean();
@SuppressWarnings("unchecked")
@Override
public void execute(Listener listener, Event event) throws EventException {
// Fire the future
if (!future.isCancelled() && !once.getAndSet(true)) {
future.set((TEvent) event);
}
}
};
RegisteredListener listener = new RegisteredListener(EMPTY_LISTENER, executor, priority, plugin, ignoreCancelled) {
@Override
public void callEvent(Event event) throws EventException {
super.callEvent(event);
list.unregister(this);
}
};
// Ensure that the future is cleaned up when the plugin is disabled
PluginDisabledListener.getListener(plugin).addFuture(future);
// Add the listener
list.register(listener);
return future;
}
/**
* Register a given event executor.
* @param plugin - the owner plugin.
* @param eventClass - the event to register.
* @param priority - the event priority.
* @param executor - the event executor.
*/
public static void registerEventExecutor(Plugin plugin, Class<? extends Event> eventClass, EventPriority priority, EventExecutor executor) {
getHandlerList(eventClass).register(
new RegisteredListener(EMPTY_LISTENER, executor, priority, plugin, false)
);
}
/**
* Retrieve the handler list associated with the given class.
* @param clazz - given event class.
* @return Associated handler list.
*/
private static HandlerList getHandlerList(Class<? extends Event> clazz) {
// Class must have Event as its superclass
while (clazz.getSuperclass() != null && Event.class.isAssignableFrom(clazz.getSuperclass())) {
try {
Method method = clazz.getDeclaredMethod("getHandlerList");
method.setAccessible(true);
return (HandlerList) method.invoke(null);
} catch (NoSuchMethodException e) {
// Keep on searching
clazz = clazz.getSuperclass().asSubclass(Event.class);
} catch (Exception e) {
throw new IllegalPluginAccessException(e.getMessage());
}
}
throw new IllegalPluginAccessException("Unable to find handler list for event "
+ clazz.getName());
}
}

34
src/main/java/com/comphenix/protocol/executors/BukkitScheduledExecutorService.java
View File

@ -1,34 +0,0 @@
package com.comphenix.protocol.executors;
import java.util.concurrent.Callable;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import com.google.common.util.concurrent.ListenableScheduledFuture;
import com.google.common.util.concurrent.ListeningScheduledExecutorService;
/**
* Represents a listening scheduler service that returns {@link ListenableScheduledFuture} instead of {@link ScheduledFuture}.
* @author Kristian
*/
public interface BukkitScheduledExecutorService extends ListeningScheduledExecutorService {
@Override
public ListenableScheduledFuture<?> schedule(
Runnable command, long delay, TimeUnit unit);
@Override
public <V> ListenableScheduledFuture<V> schedule(
Callable<V> callable, long delay, TimeUnit unit);
@Override
public ListenableScheduledFuture<?> scheduleAtFixedRate(
Runnable command, long initialDelay, long period, TimeUnit unit);
/**
* This is not supported by the underlying Bukkit scheduler.
*/
@Override
@Deprecated
public ListenableScheduledFuture<?> scheduleWithFixedDelay(
Runnable command, long initialDelay, long delay, TimeUnit unit);
}

98
src/main/java/com/comphenix/protocol/executors/CallableTask.java
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@ -1,98 +0,0 @@
package com.comphenix.protocol.executors;
import java.util.concurrent.Callable;
import java.util.concurrent.Delayed;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import com.comphenix.protocol.executors.AbstractListeningService.RunnableAbstractFuture;
import com.google.common.base.Preconditions;
import com.google.common.util.concurrent.ListenableScheduledFuture;
class CallableTask<T> extends RunnableAbstractFuture<T> {
protected final Callable<T> compute;
public CallableTask(Callable<T> compute) {
Preconditions.checkNotNull(compute, "compute cannot be NULL");
this.compute = compute;
}
public ListenableScheduledFuture<T> getScheduledFuture(final long startTime, final long nextDelay) {
return new ListenableScheduledFuture<T>() {
@Override
public boolean cancel(boolean mayInterruptIfRunning) {
return CallableTask.this.cancel(mayInterruptIfRunning);
}
@Override
public T get() throws InterruptedException, ExecutionException {
return CallableTask.this.get();
}
@Override
public T get(long timeout, TimeUnit unit) throws InterruptedException,
ExecutionException, TimeoutException {
return CallableTask.this.get(timeout, unit);
}
@Override
public boolean isCancelled() {
return CallableTask.this.isCancelled();
}
@Override
public boolean isDone() {
return CallableTask.this.isDone();
}
@Override
public void addListener(Runnable listener, Executor executor) {
CallableTask.this.addListener(listener, executor);
}
@Override
public int compareTo(Delayed o) {
return Long.valueOf(getDelay(TimeUnit.NANOSECONDS))
.compareTo(o.getDelay(TimeUnit.NANOSECONDS));
}
@Override
public long getDelay(TimeUnit unit) {
long current = System.nanoTime();
// Calculate the correct delay
if (current < startTime || !isPeriodic())
return unit.convert(startTime - current, TimeUnit.NANOSECONDS);
else
return unit.convert(((current - startTime) % nextDelay), TimeUnit.NANOSECONDS);
}
// @Override
public boolean isPeriodic() {
return nextDelay > 0;
}
};
}
/**
* Invoked by the thread responsible for computing this future.
*/
protected void compute() {
try {
// Save result
if (!isCancelled()) {
set(compute.call());
}
} catch (Throwable e) {
setException(e);
}
}
@Override
public void run() {
compute();
}
}

140
src/main/java/com/comphenix/protocol/executors/PendingTasks.java
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@ -1,140 +0,0 @@
package com.comphenix.protocol.executors;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.bukkit.plugin.Plugin;
import org.bukkit.scheduler.BukkitScheduler;
import org.bukkit.scheduler.BukkitTask;
class PendingTasks {
/**
* Represents a wrapper for a cancelable task.
*
* @author Kristian
*/
private interface CancelableFuture {
void cancel();
boolean isTaskCancelled();
}
// Every pending task
private final Set<CancelableFuture> pending = new HashSet<>();
private final Object pendingLock = new Object();
// Handle arbitrary cancelation
private final Plugin plugin;
private final BukkitScheduler scheduler;
private BukkitTask cancellationTask;
public PendingTasks(Plugin plugin, BukkitScheduler scheduler) {
this.plugin = plugin;
this.scheduler = scheduler;
}
public void add(final BukkitTask task, final Future<?> future) {
add(new CancelableFuture() {
@Override
public boolean isTaskCancelled() {
// If completed, check its cancellation state
if (future.isDone())
return future.isCancelled();
return !(scheduler.isCurrentlyRunning(task.getTaskId()) ||
scheduler.isQueued(task.getTaskId()));
}
@Override
public void cancel() {
// Make sure
task.cancel();
future.cancel(true);
}
});
}
private CancelableFuture add(CancelableFuture task) {
synchronized (pendingLock) {
pending.add(task);
pendingLock.notifyAll();
beginCancellationTask();
return task;
}
}
private void beginCancellationTask() {
if (cancellationTask == null) {
cancellationTask = scheduler.runTaskTimer(plugin, () -> {
// Check for cancellations
synchronized (pendingLock) {
boolean changed = false;
for (Iterator<CancelableFuture> it = pending.iterator(); it.hasNext(); ) {
CancelableFuture future = it.next();
// Remove cancelled tasks
if (future.isTaskCancelled()) {
future.cancel();
it.remove();
changed = true;
}
}
// Notify waiting threads
if (changed) {
pendingLock.notifyAll();
}
}
// Stop if we are out of tasks
if (isTerminated()) {
cancellationTask.cancel();
cancellationTask = null;
}
}, 1, 1);
}
}
/**
* Cancel all pending tasks.
*/
public void cancel() {
for (CancelableFuture task : pending) {
task.cancel();
}
}
/**
* Wait until all pending tasks have completed.
* @param timeout - the current timeout.
* @param unit - unit of the timeout.
* @return TRUE if every pending task has terminated, FALSE if we reached the timeout.
* @throws InterruptedException
*/
public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
long expire = System.nanoTime() + unit.toNanos(timeout);
synchronized (pendingLock) {
// Wait until the tasks have all terminated
while (!isTerminated()) {
// Check timeout
if (expire < System.nanoTime())
return false;
unit.timedWait(pendingLock, timeout);
}
}
// Timeout!
return false;
}
/**
* Determine if all tasks have completed executing.
* @return TRUE if they have, FALSE otherwise.
*/
public boolean isTerminated() {
return pending.isEmpty();
}
}

134
src/main/java/com/comphenix/protocol/executors/PluginDisabledListener.java
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@ -1,134 +0,0 @@
package com.comphenix.protocol.executors;
import java.util.Collections;
import java.util.Set;
import java.util.WeakHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import com.google.common.collect.MapMaker;
import com.google.common.util.concurrent.FutureCallback;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.server.PluginDisableEvent;
import org.bukkit.plugin.Plugin;
class PluginDisabledListener implements Listener {
private static final ConcurrentMap<Plugin, PluginDisabledListener> LISTENERS = new MapMaker().weakKeys().makeMap();
// Objects that must be disabled
private final Set<Future<?>> futures = Collections.newSetFromMap(new WeakHashMap<>());
private final Set<ExecutorService> services = Collections.newSetFromMap(new WeakHashMap<>());
private final Object setLock = new Object();
// The plugin we're looking for
private final Plugin plugin;
private boolean disabled;
private PluginDisabledListener(Plugin plugin) {
this.plugin = plugin;
}
/**
* Retrieve the associated disabled listener.
* @param plugin - the plugin.
* @return Associated listener.
*/
public static PluginDisabledListener getListener(final Plugin plugin) {
PluginDisabledListener result = LISTENERS.get(plugin);
if (result == null) {
final PluginDisabledListener created = new PluginDisabledListener(plugin);
result = LISTENERS.putIfAbsent(plugin, created);
if (result == null) {
// Register listener - we can't use the normal method as the plugin might not be enabled yet
BukkitFutures.registerEventExecutor(plugin, PluginDisableEvent.class, EventPriority.NORMAL,
(listener, event) -> {
if (event instanceof PluginDisableEvent) {
created.onPluginDisabled((PluginDisableEvent) event);
}
});
result = created;
}
}
return result;
}
/**
* Ensure that the given future will be cancelled when the plugin is disabled.
* @param future - the future to cancel.
*/
public void addFuture(final ListenableFuture<?> future) {
synchronized (setLock) {
if (disabled) {
processFuture(future);
} else {
futures.add(future);
}
}
// Remove the future when it has computed
Futures.addCallback(future, new FutureCallback<Object>() {
@Override
public void onSuccess(Object value) {
synchronized (setLock) {
futures.remove(future);
}
}
@Override
public void onFailure(Throwable ex) {
synchronized (setLock) {
futures.remove(future);
}
}
});
}
/**
* Ensure that a given service is shutdown when the plugin is disabled.
* @param service - the service.
*/
public void addService(ExecutorService service) {
synchronized (setLock) {
if (disabled) {
processService(service);
} else {
services.add(service);
}
}
}
// Will be registered manually
public void onPluginDisabled(PluginDisableEvent e) {
if (e.getPlugin().equals(plugin)) {
synchronized (setLock) {
disabled = true;
// Cancel all unfinished futures
for (Future<?> future : futures) {
processFuture(future);
}
for (ExecutorService service : services) {
processService(service);
}
}
}
}
private void processFuture(Future<?> future) {
if (!future.isDone()) {
future.cancel(true);
}
}
private void processService(ExecutorService service) {
service.shutdownNow();
}
}

518
src/main/java/com/comphenix/protocol/injector/DelayedPacketManager.java
View File

@ -1,518 +0,0 @@
package com.comphenix.protocol.injector;
import java.lang.reflect.InvocationTargetException;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.annotation.Nonnull;
import com.comphenix.protocol.AsynchronousManager;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.PacketType.Sender;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.events.*;
import com.comphenix.protocol.injector.netty.WirePacket;
import com.comphenix.protocol.injector.packet.PacketRegistry;
import com.comphenix.protocol.reflect.FieldAccessException;
import com.comphenix.protocol.utility.MinecraftVersion;
import com.google.common.base.Objects;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import org.bukkit.Location;
import org.bukkit.World;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Player;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.PluginManager;
/**
* A protocol manager that delays all packet listener registrations and unregistrations until
* an underlying protocol manager can be constructed.
*
* @author Kristian
*/
public class DelayedPacketManager implements InternalManager {
// Registering packet IDs that are not supported
public static final ReportType REPORT_CANNOT_SEND_QUEUED_PACKET = new ReportType("Cannot send queued packet %s.");
public static final ReportType REPORT_CANNOT_SEND_QUEUED_WIRE_PACKET = new ReportType("Cannot send queued wire packet %s.");
public static final ReportType REPORT_CANNOT_REGISTER_QUEUED_LISTENER = new ReportType("Cannot register queued listener %s.");
private volatile InternalManager delegate;
// Queued actions
private final List<Runnable> queuedActions = Collections.synchronizedList(Lists.<Runnable>newArrayList());
private final List<PacketListener> queuedListeners = Collections.synchronizedList(Lists.<PacketListener>newArrayList());
private AsynchronousManager asyncManager;
private ErrorReporter reporter;
// The current hook
private PlayerInjectHooks hook = PlayerInjectHooks.NETWORK_SERVER_OBJECT;
// If we have been closed
private boolean closed;
private boolean debug;
// Queued registration
private PluginManager queuedManager;
private Plugin queuedPlugin;
private MinecraftVersion version;
public DelayedPacketManager(@Nonnull ErrorReporter reporter, @Nonnull MinecraftVersion version) {
Preconditions.checkNotNull(reporter, "reporter cannot be NULL.");
Preconditions.checkNotNull(version, "version cannot be NULL.");
this.reporter = reporter;
this.version = version;
}
/**
* Retrieve the underlying protocol manager.
* @return The underlying manager.
*/
public InternalManager getDelegate() {
return delegate;
}
@Override
public int getProtocolVersion(Player player) {
if (delegate != null)
return delegate.getProtocolVersion(player);
else
return Integer.MIN_VALUE;
}
@Override
public MinecraftVersion getMinecraftVersion() {
if (delegate != null)
return delegate.getMinecraftVersion();
else
return version;
}
/**
* Update the delegate to the underlying manager.
* <p>
* This will prompt this packet manager to immediately transmit and
* register all queued packets an listeners.
* @param delegate - delegate to the new manager.
*/
protected void setDelegate(InternalManager delegate) {
this.delegate = delegate;
if (delegate != null) {
// Update the hook if needed
if (!Objects.equal(delegate.getPlayerHook(), hook)) {
delegate.setPlayerHook(hook);
}
// Register events as well
if (queuedManager != null && queuedPlugin != null) {
delegate.registerEvents(queuedManager, queuedPlugin);
}
// And update the debug mode
delegate.setDebug(debug);
// Add any pending listeners
synchronized (queuedListeners) {
for (PacketListener listener : queuedListeners) {
try {
delegate.addPacketListener(listener);
} catch (IllegalArgumentException e) {
// Inform about this plugin error
reporter.reportWarning(this,
Report.newBuilder(REPORT_CANNOT_REGISTER_QUEUED_LISTENER).
callerParam(delegate).messageParam(listener).error(e));
}
}
}
// Execute any delayed actions
synchronized (queuedActions) {
for (Runnable action : queuedActions) {
action.run();
}
}
// Don't keep this around anymore
queuedListeners.clear();
queuedActions.clear();
}
}
private Runnable queuedAddPacket(final ConnectionSide side, final Player player, final PacketContainer packet,
final NetworkMarker marker, final boolean filtered) {
return new Runnable() {
@Override
public void run() {
try {
// Attempt to send it now
switch (side) {
case CLIENT_SIDE:
delegate.recieveClientPacket(player, packet, marker, filtered);
break;
case SERVER_SIDE:
delegate.sendServerPacket(player, packet, marker, filtered);
break;
default:
throw new IllegalArgumentException("side cannot be " + side);
}
} catch (Exception e) {
// Inform about this plugin error
reporter.reportWarning(this,
Report.newBuilder(REPORT_CANNOT_SEND_QUEUED_PACKET).
callerParam(delegate).messageParam(packet).error(e));
}
}
};
}
@Override
public void setPlayerHook(PlayerInjectHooks playerHook) {
this.hook = playerHook;
}
@Override
public PlayerInjectHooks getPlayerHook() {
return hook;
}
@Override
public void sendServerPacket(Player receiver, PacketContainer packet) throws InvocationTargetException {
sendServerPacket(receiver, packet, null, true);
}
@Override
public void sendServerPacket(Player receiver, PacketContainer packet, boolean filters) throws InvocationTargetException {
sendServerPacket(receiver, packet, null, filters);
}
@Override
public void sendServerPacket(Player receiver, PacketContainer packet, NetworkMarker marker, boolean filters) throws InvocationTargetException {
if (delegate != null) {
delegate.sendServerPacket(receiver, packet, marker, filters);
} else {
queuedActions.add(queuedAddPacket(ConnectionSide.SERVER_SIDE, receiver, packet, marker, filters));
}
}
@Override
public void sendWirePacket(Player receiver, int id, byte[] bytes) throws InvocationTargetException {
WirePacket packet = new WirePacket(id, bytes);
sendWirePacket(receiver, packet);
}
@Override
public void sendWirePacket(final Player receiver, final WirePacket packet) throws InvocationTargetException {
if (delegate != null) {
delegate.sendWirePacket(receiver, packet);
} else {
queuedActions.add(new Runnable() {
@Override
public void run() {
try {
delegate.sendWirePacket(receiver, packet);
} catch (Throwable ex) {
// Inform about this plugin error
reporter.reportWarning(this, Report.newBuilder(REPORT_CANNOT_SEND_QUEUED_WIRE_PACKET)
.callerParam(delegate)
.messageParam(packet)
.error(ex));
}
}
});
}
}
@Override
public void recieveClientPacket(Player sender, PacketContainer packet) throws IllegalAccessException, InvocationTargetException {
recieveClientPacket(sender, packet, null, true);
}
@Override
public void recieveClientPacket(Player sender, PacketContainer packet, boolean filters) throws IllegalAccessException, InvocationTargetException {
recieveClientPacket(sender, packet, null, filters);
}
@Override
public void recieveClientPacket(Player sender, PacketContainer packet, NetworkMarker marker, boolean filters) throws IllegalAccessException, InvocationTargetException {
if (delegate != null) {
delegate.recieveClientPacket(sender, packet, marker, filters);
} else {
queuedActions.add(queuedAddPacket(ConnectionSide.CLIENT_SIDE, sender, packet, marker, filters));
}
}
@Override
public void broadcastServerPacket(final PacketContainer packet, final Entity entity, final boolean includeTracker) {
if (delegate != null) {
delegate.broadcastServerPacket(packet, entity, includeTracker);
} else {
queuedActions.add(new Runnable() {
@Override
public void run() {
delegate.broadcastServerPacket(packet, entity, includeTracker);
}
});
}
}
@Override
public void broadcastServerPacket(final PacketContainer packet, final Location origin, final int maxObserverDistance) {
if (delegate != null) {
delegate.broadcastServerPacket(packet, origin, maxObserverDistance);
} else {
queuedActions.add(new Runnable() {
@Override
public void run() {
delegate.broadcastServerPacket(packet, origin, maxObserverDistance);
}
});
}
}
@Override
public void broadcastServerPacket(final PacketContainer packet) {
if (delegate != null) {
delegate.broadcastServerPacket(packet);
} else {
queuedActions.add(new Runnable() {
@Override
public void run() {
delegate.broadcastServerPacket(packet);
}
});
}
}
@Override
public ImmutableSet<PacketListener> getPacketListeners() {
if (delegate != null)
return delegate.getPacketListeners();
else
return ImmutableSet.copyOf(queuedListeners);
}
@Override
public void addPacketListener(PacketListener listener) {
if (delegate != null)
delegate.addPacketListener(listener);
else
queuedListeners.add(listener);
}
@Override
public void removePacketListener(PacketListener listener) {
if (delegate != null)
delegate.removePacketListener(listener);
else
queuedListeners.remove(listener);
}
@Override
public void removePacketListeners(Plugin plugin) {
if (delegate != null) {
delegate.removePacketListeners(plugin);
} else {
for (Iterator<PacketListener> it = queuedListeners.iterator(); it.hasNext(); ) {
// Remove listeners of the same plugin
if (Objects.equal(it.next().getPlugin(), plugin)) {
it.remove();
}
}
}
}
@Override
@Deprecated
public PacketContainer createPacket(int id) {
if (delegate != null)
return delegate.createPacket(id);
return createPacket(id, true);
}
@Override
@Deprecated
public PacketContainer createPacket(int id, boolean forceDefaults) {
if (delegate != null) {
return delegate.createPacket(id);
} else {
// Fallback implementation
PacketContainer packet = new PacketContainer(id);
// Use any default values if possible
if (forceDefaults) {
try {
packet.getModifier().writeDefaults();
} catch (FieldAccessException e) {
throw new RuntimeException("Security exception.", e);
}
}
return packet;
}
}
@SuppressWarnings("deprecation")
@Override
public PacketConstructor createPacketConstructor(int id, Object... arguments) {
if (delegate != null)
return delegate.createPacketConstructor(id, arguments);
else
return PacketConstructor.DEFAULT.withPacket(id, arguments);
}
@Override
public PacketConstructor createPacketConstructor(PacketType type, Object... arguments) {
if (delegate != null)
return delegate.createPacketConstructor(type, arguments);
else
return PacketConstructor.DEFAULT.withPacket(type, arguments);
}
@Override
@Deprecated
public Set<Integer> getSendingFilters() {
if (delegate != null) {
return delegate.getSendingFilters();
} else {
// Linear scan is fast enough here
Set<Integer> sending = Sets.newHashSet();
for (PacketListener listener : queuedListeners) {
sending.addAll(listener.getSendingWhitelist().getWhitelist());
}
return sending;
}
}
@Override
@Deprecated
public Set<Integer> getReceivingFilters() {
if (delegate != null) {
return delegate.getReceivingFilters();
} else {
Set<Integer> recieving = Sets.newHashSet();
for (PacketListener listener : queuedListeners) {
recieving.addAll(listener.getReceivingWhitelist().getWhitelist());
}
return recieving;
}
}
@Override
public PacketContainer createPacket(PacketType type) {
return createPacket(type.getLegacyId());
}
@Override
public PacketContainer createPacket(PacketType type, boolean forceDefaults) {
return createPacket(type.getLegacyId(), forceDefaults);
}
@Override
public Set<PacketType> getSendingFilterTypes() {
return PacketRegistry.toPacketTypes(getSendingFilters(), Sender.SERVER);
}
@Override
public Set<PacketType> getReceivingFilterTypes() {
return PacketRegistry.toPacketTypes(getReceivingFilters(), Sender.CLIENT);
}
@Override
public void updateEntity(Entity entity, List<Player> observers) throws FieldAccessException {
if (delegate != null)
delegate.updateEntity(entity, observers);
else
EntityUtilities.getInstance().updateEntity(entity, observers);
}
@Override
public Entity getEntityFromID(World container, int id) throws FieldAccessException {
if (delegate != null)
return delegate.getEntityFromID(container, id);
else
return EntityUtilities.getInstance().getEntityFromID(container, id);
}
@Override
public List<Player> getEntityTrackers(Entity entity) throws FieldAccessException {
if (delegate != null)
return delegate.getEntityTrackers(entity);
else
return EntityUtilities.getInstance().getEntityTrackers(entity);
}
@Override
public boolean isClosed() {
return closed || (delegate != null && delegate.isClosed());
}
@Override
public AsynchronousManager getAsynchronousManager() {
if (delegate != null)
return delegate.getAsynchronousManager();
else
return asyncManager;
}
@Override
public boolean isDebug() {
return debug;
}
@Override
public void setDebug(boolean debug) {
this.debug = debug;
if (delegate != null) {
delegate.setDebug(debug);
}
}
/**
* Update the asynchronous manager. This must be set.
* @param asyncManager - the asynchronous manager.
*/
public void setAsynchronousManager(AsynchronousManager asyncManager) {
this.asyncManager = asyncManager;
}
@Override
public void registerEvents(PluginManager manager, Plugin plugin) {
if (delegate != null) {
delegate.registerEvents(manager, plugin);
} else {
queuedManager = manager;
queuedPlugin = plugin;
}
}
@Override
public void close() {
if (delegate != null)
delegate.close();
closed = true;
}
@Override
public void verifyWhitelist(PacketListener listener, ListeningWhitelist whitelist) {
for (PacketType type : whitelist.getTypes()) {
if (type == null) {
throw new IllegalArgumentException(String.format("Packet type in in listener %s was NULL.",
PacketAdapter.getPluginName(listener))
);
}
}
}
}

46
src/main/java/com/comphenix/protocol/injector/ListenerInvoker.java
View File

@ -19,7 +19,6 @@ package com.comphenix.protocol.injector;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.events.PacketEvent;
import com.comphenix.protocol.injector.packet.InterceptWritePacket;
/**
* Represents an object that initiate the packet listeners.
@ -32,13 +31,13 @@ public interface ListenerInvoker {
* Invokes the given packet event for every registered listener.
* @param event - the packet event to invoke.
*/
public abstract void invokePacketRecieving(PacketEvent event);
void invokePacketRecieving(PacketEvent event);
/**
* Invokes the given packet event for every registered listener.
* @param event - the packet event to invoke.
*/
public abstract void invokePacketSending(PacketEvent event);
void invokePacketSending(PacketEvent event);
/**
* Retrieve the associated ID of a packet.
@ -46,49 +45,12 @@ public interface ListenerInvoker {
* @return The packet ID.
*/
@Deprecated
public abstract int getPacketID(Object packet);
int getPacketID(Object packet);
/**
* Retrieve the associated type of a packet.
* @param packet - the packet.
* @return The packet type.
*/
public abstract PacketType getPacketType(Object packet);
/**
* Retrieve the object responsible for intercepting write packets.
* @return Object that intercepts write packets.
*/
public InterceptWritePacket getInterceptWritePacket();
/**
* Determine if a given packet requires input buffering.
* @param packetId - the packet to check.
* @return TRUE if it does, FALSE otherwise.
*/
@Deprecated
public boolean requireInputBuffer(int packetId);
/**
* Associate a given class with the given packet ID. Internal method.
* @param clazz - class to associate.
*/
public abstract void unregisterPacketClass(Class<?> clazz);
/**
* Register a given class in the packet registry. Internal method.
* @param clazz - class to register.
* @param packetID - the the new associated packet ID.
*/
@Deprecated
public abstract void registerPacketClass(Class<?> clazz, int packetID);
/**
* Retrieves the correct packet class from a given packet ID.
* @param packetID - the packet ID.
* @param forceVanilla - whether or not to look for vanilla classes, not injected classes.
* @return The associated class.
*/
@Deprecated
public abstract Class<?> getPacketClassFromID(int packetID, boolean forceVanilla);
PacketType getPacketType(Object packet);
}

92
src/main/java/com/comphenix/protocol/injector/LoginPackets.java
View File

@ -1,92 +0,0 @@
package com.comphenix.protocol.injector;
import org.bukkit.Bukkit;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.Packets;
import com.comphenix.protocol.concurrency.IntegerSet;
import com.comphenix.protocol.events.ConnectionSide;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.comphenix.protocol.utility.MinecraftVersion;
/**
* Packets that are known to be transmitted during login.
* <p>
* This may be dynamically extended later.
* @author Kristian
*/
class LoginPackets {
private IntegerSet clientSide = new IntegerSet(Packets.PACKET_COUNT);
private IntegerSet serverSide = new IntegerSet(Packets.PACKET_COUNT);
@SuppressWarnings("deprecation")
public LoginPackets(MinecraftVersion version) {
// Ordinary login
clientSide.add(Packets.Client.HANDSHAKE);
serverSide.add(Packets.Server.KEY_REQUEST);
clientSide.add(Packets.Client.KEY_RESPONSE);
serverSide.add(Packets.Server.KEY_RESPONSE);
clientSide.add(Packets.Client.CLIENT_COMMAND);
serverSide.add(Packets.Server.LOGIN);
// List ping
clientSide.add(Packets.Client.GET_INFO);
// In 1.6.2, Minecraft started sending CUSTOM_PAYLOAD in the server list protocol
// MCPC+/Cauldron contains Forge, which uses CUSTOM_PAYLOAD during login
if (version.isAtLeast(MinecraftVersion.HORSE_UPDATE) || isCauldronOrMCPC()) {
clientSide.add(Packets.Client.CUSTOM_PAYLOAD);
}
if (isCauldronOrMCPC()) {
serverSide.add(Packets.Server.CUSTOM_PAYLOAD);
}
serverSide.add(Packets.Server.KICK_DISCONNECT);
}
/**
* Determine if we are running MCPC or Cauldron.
* @return TRUE if we are, FALSE otherwise.
*/
private static boolean isCauldronOrMCPC() {
String version = Bukkit.getServer().getVersion();
return version.contains("MCPC") || version.contains("Cauldron");
}
/**
* Determine if a packet may be sent during login from a given direction.
* @param packetId - the ID of the packet.
* @param side - the direction.
* @return TRUE if it may, FALSE otherwise.
*/
@Deprecated
public boolean isLoginPacket(int packetId, ConnectionSide side) {
switch (side) {
case CLIENT_SIDE:
return clientSide.contains(packetId);
case SERVER_SIDE:
return serverSide.contains(packetId);
case BOTH:
return clientSide.contains(packetId) ||
serverSide.contains(packetId);
default:
throw new IllegalArgumentException("Unknown connection side: " + side);
}
}
/**
* Determine if a given packet may be sent during login.
* @param type - the packet type.
* @return TRUE if it may, FALSE otherwise.
*/
public boolean isLoginPacket(PacketType type) {
if (!MinecraftReflection.isUsingNetty())
return isLoginPacket(type.getLegacyId(), type.getSender().toSide());
return PacketType.Login.Client.getInstance().hasMember(type) ||
PacketType.Login.Server.getInstance().hasMember(type) ||
PacketType.Status.Client.getInstance().hasMember(type) ||
PacketType.Status.Server.getInstance().hasMember(type);
}
}

18
src/main/java/com/comphenix/protocol/injector/PacketConstructor.java
View File

@ -81,7 +81,7 @@ public class PacketConstructor {
*/
@Deprecated
public int getPacketID() {
return type.getLegacyId();
return type.getCurrentId();
}
/**
@ -101,22 +101,6 @@ public class PacketConstructor {
return new PacketConstructor(type, constructorMethod, unwrappers, paramUnwrapper);
}
/**
* Create a packet constructor that creates packets using the given ID.
* <p>
* Note that if you pass a Class as a value, it will use its type directly.
* <p>
* Deprecated: Use {@link #withPacket(PacketType, Object[])} instead.
* @param id - legacy (1.6.4) packet ID.
* @param values - the values that will match each parameter in the desired constructor.
* @return A packet constructor with these types.
* @throws IllegalArgumentException If no packet constructor could be created with these types.
*/
@Deprecated
public PacketConstructor withPacket(int id, Object[] values) {
return withPacket(PacketType.findLegacy(id), values);
}
/**
* Create a packet constructor that creates packets using the given types.
* <p>

71
src/main/java/com/comphenix/protocol/injector/PacketFilterBuilder.java
View File

@ -2,26 +2,14 @@ package com.comphenix.protocol.injector;
import javax.annotation.Nonnull;
import org.bukkit.Server;
import org.bukkit.event.world.WorldInitEvent;
import org.bukkit.plugin.Plugin;
import com.comphenix.protocol.executors.BukkitFutures;
import com.comphenix.protocol.async.AsyncFilterManager;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.injector.player.InjectedServerConnection;
import com.comphenix.protocol.injector.spigot.SpigotPacketInjector;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.comphenix.protocol.utility.MinecraftVersion;
import com.google.common.util.concurrent.FutureCallback;
import com.google.common.util.concurrent.Futures;
import org.bukkit.Server;
import org.bukkit.plugin.Plugin;
public class PacketFilterBuilder {
public static final ReportType REPORT_TEMPORARY_EVENT_ERROR = new ReportType("Unable to register or handle temporary event.");
public static final ReportType REPORT_SPIGOT_IS_DELAYING_INJECTOR = new ReportType("Delaying due to Spigot.");
private ClassLoader classLoader;
private Server server;
private Plugin library;
@ -185,63 +173,10 @@ public class PacketFilterBuilder {
asyncManager = new AsyncFilterManager(reporter, server.getScheduler());
nettyEnabled = false;
// Spigot
if (SpigotPacketInjector.canUseSpigotListener()) {
// If the server hasn't loaded yet - wait
if (InjectedServerConnection.getServerConnection(reporter, server) == null) {
// We need to delay this until we know if Netty is enabled
final DelayedPacketManager delayed = new DelayedPacketManager(reporter, mcVersion);
// They must reference each other
delayed.setAsynchronousManager(asyncManager);
asyncManager.setManager(delayed);
Futures.addCallback(BukkitFutures.nextEvent(library, WorldInitEvent.class),
new FutureCallback<WorldInitEvent>() {
@Override
public void onSuccess(WorldInitEvent event) {
// Nevermind
if (delayed.isClosed())
return;
try {
registerSpigot(delayed);
} catch (Exception e) {
onFailure(e);
}
}
@Override
public void onFailure(Throwable error) {
reporter.reportWarning(PacketFilterBuilder.this, Report
.newBuilder(REPORT_TEMPORARY_EVENT_ERROR).error(error));
}
});
reporter.reportWarning(this, Report.newBuilder(REPORT_SPIGOT_IS_DELAYING_INJECTOR));
// Let plugins use this version instead
return delayed;
} else {
nettyEnabled = !MinecraftReflection.isMinecraftObject(
InjectedServerConnection.getServerConnection(reporter, server));
}
}
// Otherwise - construct the packet filter manager right away
return buildInternal();
}
private void registerSpigot(DelayedPacketManager delayed) {
// Use netty if we have a non-standard ServerConnection class
nettyEnabled = !MinecraftReflection.isMinecraftObject(
InjectedServerConnection.getServerConnection(reporter, server));
// Switch to the standard manager
delayed.setDelegate(buildInternal());
}
/**
* Construct a new packet filter manager without checking for Netty.
* @return A new packet filter manager.

184
src/main/java/com/comphenix/protocol/injector/PacketFilterManager.java
View File

@ -24,7 +24,7 @@ import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import javax.annotation.Nullable;
import java.util.function.Predicate;
import com.comphenix.protocol.AsynchronousManager;
import com.comphenix.protocol.PacketType;
@ -37,25 +37,21 @@ import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.events.*;
import com.comphenix.protocol.injector.netty.ProtocolInjector;
import com.comphenix.protocol.injector.netty.WirePacket;
import com.comphenix.protocol.injector.packet.InterceptWritePacket;
import com.comphenix.protocol.injector.packet.PacketInjector;
import com.comphenix.protocol.injector.packet.PacketInjectorBuilder;
import com.comphenix.protocol.injector.packet.PacketRegistry;
import com.comphenix.protocol.injector.player.PlayerInjectionHandler;
import com.comphenix.protocol.injector.player.PlayerInjectionHandler.ConflictStrategy;
import com.comphenix.protocol.injector.player.PlayerInjector.ServerHandlerNull;
import com.comphenix.protocol.injector.player.PlayerInjectorBuilder;
import com.comphenix.protocol.injector.spigot.SpigotPacketInjector;
import com.comphenix.protocol.reflect.FieldAccessException;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.comphenix.protocol.utility.MinecraftVersion;
import com.comphenix.protocol.utility.Util;
import com.google.common.base.Objects;
import com.google.common.base.Preconditions;
import com.google.common.base.Predicate;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Sets;
import io.netty.channel.Channel;
import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.Server;
@ -72,8 +68,6 @@ import org.bukkit.event.server.PluginDisableEvent;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.PluginManager;
import io.netty.channel.Channel;
public final class PacketFilterManager implements ListenerInvoker, InternalManager {
public static final ReportType REPORT_CANNOT_LOAD_PACKET_LIST = new ReportType("Cannot load server and client packet list.");
@ -106,8 +100,7 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
private DelayedSingleTask unhookTask;
// Create a concurrent set
private Set<PacketListener> packetListeners =
Collections.newSetFromMap(new ConcurrentHashMap<PacketListener, Boolean>());
private Set<PacketListener> packetListeners = Collections.newSetFromMap(new ConcurrentHashMap<>());
// Packet injection
private PacketInjector packetInjector;
@ -115,9 +108,6 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
// Different injection types per game phase
private PlayerInjectionHandler playerInjection;
// Intercepting write packet methods
private InterceptWritePacket interceptWritePacket;
// Whether or not a packet must be input buffered
private volatile Set<PacketType> inputBufferedPackets = Sets.newHashSet();
@ -154,9 +144,6 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
// Whether or not plugins are using the send/receive methods
private AtomicBoolean packetCreation = new AtomicBoolean();
// Spigot listener, if in use
private SpigotPacketInjector spigotInjector;
// Netty injector (for 1.7.2)
private ProtocolInjector nettyInjector;
@ -169,9 +156,6 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
// The current Minecraft version
private MinecraftVersion minecraftVersion;
// Login packets
private LoginPackets loginPackets;
// Debug mode
private boolean debug;
@ -181,18 +165,15 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
*/
public PacketFilterManager(PacketFilterBuilder builder) {
// Used to determine if injection is needed
Predicate<GamePhase> isInjectionNecessary = new Predicate<GamePhase>() {
@Override
public boolean apply(@Nullable GamePhase phase) {
boolean result = true;
Predicate<GamePhase> isInjectionNecessary = phase -> {
boolean result = true;
if (phase.hasLogin())
result &= getPhaseLoginCount() > 0;
// Note that we will still hook players if the unhooking has been delayed
if (phase.hasPlaying())
result &= getPhasePlayingCount() > 0 || unhookTask.isRunning();
return result;
}
if (phase.hasLogin())
result &= getPhaseLoginCount() > 0;
// Note that we will still hook players if the unhooking has been delayed
if (phase.hasPlaying())
result &= getPhasePlayingCount() > 0 || unhookTask.isRunning();
return result;
};
// Listener containers
@ -217,47 +198,11 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
// Prepare version
this.minecraftVersion = builder.getMinecraftVersion();
this.loginPackets = new LoginPackets(minecraftVersion);
// The write packet interceptor
this.interceptWritePacket = new InterceptWritePacket(reporter);
this.nettyInjector = new ProtocolInjector(builder.getLibrary(), this, reporter);
this.playerInjection = nettyInjector.getPlayerInjector();
this.packetInjector = nettyInjector.getPacketInjector();
// Use the correct injection type
if (MinecraftReflection.isUsingNetty()) {
this.nettyInjector = new ProtocolInjector(builder.getLibrary(), this, reporter);
this.playerInjection = nettyInjector.getPlayerInjector();
this.packetInjector = nettyInjector.getPacketInjector();
} else if (builder.isNettyEnabled()) {
this.spigotInjector = new SpigotPacketInjector(reporter, this, server);
this.playerInjection = spigotInjector.getPlayerHandler();
this.packetInjector = spigotInjector.getPacketInjector();
// Set real injector, in case we need it
spigotInjector.setProxyPacketInjector(PacketInjectorBuilder.newBuilder().
invoker(this).
reporter(reporter).
playerInjection(playerInjection).
buildInjector()
);
} else {
// Initialize standard injection mangers
this.playerInjection = PlayerInjectorBuilder.newBuilder().
invoker(this).
server(server).
reporter(reporter).
packetListeners(packetListeners).
injectionFilter(isInjectionNecessary).
version(builder.getMinecraftVersion()).
buildHandler();
this.packetInjector = PacketInjectorBuilder.newBuilder().
invoker(this).
reporter(reporter).
playerInjection(playerInjection).
buildInjector();
}
this.asyncFilterManager = builder.getAsyncManager();
this.library = builder.getLibrary();
@ -331,11 +276,6 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
return ImmutableSet.copyOf(packetListeners);
}
@Override
public InterceptWritePacket getInterceptWritePacket() {
return interceptWritePacket;
}
/**
* Warn of common programming mistakes.
* @param plugin - plugin to check.
@ -410,13 +350,25 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
}
}
/**
* Determine if a given packet may be sent during login.
* @param type - the packet type.
* @return TRUE if it may, FALSE otherwise.
*/
public boolean isLoginPacket(PacketType type) {
return PacketType.Login.Client.getInstance().hasMember(type) ||
PacketType.Login.Server.getInstance().hasMember(type) ||
PacketType.Status.Client.getInstance().hasMember(type) ||
PacketType.Status.Server.getInstance().hasMember(type);
}
private GamePhase processPhase(ListeningWhitelist whitelist) {
// Determine if this is a login packet, ensuring that gamephase detection is enabled
if (!whitelist.getGamePhase().hasLogin() &&
!whitelist.getOptions().contains(ListenerOptions.DISABLE_GAMEPHASE_DETECTION)) {
for (PacketType type : whitelist.getTypes()) {
if (loginPackets.isLoginPacket(type)) {
if (isLoginPacket(type)) {
return GamePhase.BOTH;
}
}
@ -565,11 +517,6 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
}
}
@Override
public boolean requireInputBuffer(int packetId) {
return inputBufferedPackets.contains(PacketType.findLegacy(packetId, Sender.CLIENT));
}
/**
* Handle a packet sending or receiving event.
* <p>
@ -858,23 +805,11 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
}
}
@Override
@Deprecated
public PacketContainer createPacket(int id) {
return createPacket(PacketType.findLegacy(id), true);
}
@Override
public PacketContainer createPacket(PacketType type) {
return createPacket(type, true);
}
@Override
@Deprecated
public PacketContainer createPacket(int id, boolean forceDefaults) {
return createPacket(PacketType.findLegacy(id), forceDefaults);
}
@Override
public PacketContainer createPacket(PacketType type, boolean forceDefaults) {
PacketContainer packet = new PacketContainer(type);
@ -891,27 +826,11 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
return packet;
}
@Override
@Deprecated
public PacketConstructor createPacketConstructor(int id, Object... arguments) {
return PacketConstructor.DEFAULT.withPacket(id, arguments);
}
@Override
public PacketConstructor createPacketConstructor(PacketType type, Object... arguments) {
return PacketConstructor.DEFAULT.withPacket(type, arguments);
}
@Override
@Deprecated
public Set<Integer> getSendingFilters() {
return PacketRegistry.toLegacy(playerInjection.getSendingFilters());
}
@Override
public Set<Integer> getReceivingFilters() {
return PacketRegistry.toLegacy(packetInjector.getPacketHandlers());
}
@Override
public Set<PacketType> getSendingFilterTypes() {
return Collections.unmodifiableSet(playerInjection.getSendingFilters());
@ -964,8 +883,6 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
*/
@Override
public void registerEvents(PluginManager manager, final Plugin plugin) {
if (spigotInjector != null && !spigotInjector.register(plugin))
throw new IllegalArgumentException("Spigot has already been registered.");
if (nettyInjector != null)
nettyInjector.inject();
@ -1012,8 +929,6 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
// Let's clean up the other injection first.
playerInjection.uninjectPlayer(event.getPlayer().getAddress());
playerInjection.injectPlayer(event.getPlayer(), ConflictStrategy.OVERRIDE);
} catch (ServerHandlerNull e) {
// Caused by logged out players, or fake login events in MCPC+/Cauldron. Ignore it.
} catch (Exception e) {
reporter.reportDetailed(PacketFilterManager.this,
Report.newBuilder(REPORT_CANNOT_INJECT_PLAYER).callerParam(event).error(e)
@ -1087,44 +1002,6 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
}
}
@Override
@Deprecated
public void registerPacketClass(Class<?> clazz, int packetID) {
PacketRegistry.getPacketToID().put(clazz, packetID);
}
@Override
@Deprecated
public void unregisterPacketClass(Class<?> clazz) {
PacketRegistry.getPacketToID().remove(clazz);
}
@Override
@Deprecated
public Class<?> getPacketClassFromID(int packetID, boolean forceVanilla) {
return PacketRegistry.getPacketClassFromID(packetID, forceVanilla);
}
/**
* Retrieve every known and supported server packet.
* @return An immutable set of every known server packet.
* @throws FieldAccessException If we're unable to retrieve the server packet data from Minecraft.
*/
@Deprecated
public static Set<Integer> getServerPackets() throws FieldAccessException {
return PacketRegistry.getServerPackets();
}
/**
* Retrieve every known and supported client packet.
* @return An immutable set of every known client packet.
* @throws FieldAccessException If we're unable to retrieve the client packet data from Minecraft.
*/
@Deprecated
public static Set<Integer> getClientPackets() throws FieldAccessException {
return PacketRegistry.getClientPackets();
}
/**
* Retrieves the current plugin class loader.
* @return Class loader.
@ -1147,8 +1024,6 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
// Remove packet handlers
if (packetInjector != null)
packetInjector.cleanupAll();
if (spigotInjector != null)
spigotInjector.cleanupAll();
if (nettyInjector != null)
nettyInjector.close();
@ -1161,9 +1036,6 @@ public final class PacketFilterManager implements ListenerInvoker, InternalManag
recievedListeners = null;
sendingListeners = null;
// Also cleanup the interceptor for the write packet method
interceptWritePacket.cleanup();
// Clean up async handlers. We have to do this last.
asyncFilterManager.cleanupAll();
}

42
src/main/java/com/comphenix/protocol/injector/StructureCache.java
View File

@ -37,22 +37,9 @@ import com.comphenix.protocol.utility.MinecraftReflection;
*/
public class StructureCache {
// Structure modifiers
private static ConcurrentMap<PacketType, StructureModifier<Object>> structureModifiers =
new ConcurrentHashMap<PacketType, StructureModifier<Object>>();
private static ConcurrentMap<PacketType, StructureModifier<Object>> structureModifiers = new ConcurrentHashMap<>();
private static Set<PacketType> compiling = new HashSet<PacketType>();
/**
* Creates an empty Minecraft packet of the given id.
* <p>
* Decreated: Use {@link #newPacket(PacketType)} instead.
* @param legacyId - legacy (1.6.4) packet id.
* @return Created packet.
*/
@Deprecated
public static Object newPacket(int legacyId) {
return newPacket(PacketType.findLegacy(legacyId));
}
private static Set<PacketType> compiling = new HashSet<>();
/**
* Creates an empty Minecraft packet of the given type.
@ -76,18 +63,6 @@ public class StructureCache {
throw new IllegalArgumentException("Cannot find associated packet class: " + type);
}
/**
* Retrieve a cached structure modifier for the given packet id.
* <p>
* Deprecated: Use {@link #getStructure(PacketType)} instead.
* @param legacyId - the legacy (1.6.4) packet ID.
* @return A structure modifier.
*/
@Deprecated
public static StructureModifier<Object> getStructure(int legacyId) {
return getStructure(PacketType.findLegacy(legacyId));
}
/**
* Retrieve a cached structure modifier for the given packet type.
* @param type - packet type.
@ -119,19 +94,6 @@ public class StructureCache {
return getStructure(PacketRegistry.getPacketType(packetType), compile);
}
/**
* Retrieve a cached structure modifier for the given packet ID.
* <p>
* Deprecated: Use {@link #getStructure(PacketType, boolean)} instead.
* @param legacyId - the legacy (1.6.4) packet ID.
* @param compile - whether or not to asynchronously compile the structure modifier.
* @return A structure modifier.
*/
@Deprecated
public static StructureModifier<Object> getStructure(final int legacyId, boolean compile) {
return getStructure(PacketType.findLegacy(legacyId), compile);
}
/**
* Retrieve a cached structure modifier for the given packet type.
* @param type - packet type.

2
src/main/java/com/comphenix/protocol/injector/spigot/AbstractPacketInjector.java → src/main/java/com/comphenix/protocol/injector/netty/AbstractPacketInjector.java
View File

@ -1,4 +1,4 @@
package com.comphenix.protocol.injector.spigot;
package com.comphenix.protocol.injector.netty;
import java.util.Set;

2
src/main/java/com/comphenix/protocol/injector/spigot/AbstractPlayerHandler.java → src/main/java/com/comphenix/protocol/injector/netty/AbstractPlayerHandler.java
View File

@ -1,4 +1,4 @@
package com.comphenix.protocol.injector.spigot;
package com.comphenix.protocol.injector.netty;
import java.io.DataInputStream;
import java.util.Set;

2
src/main/java/com/comphenix/protocol/injector/netty/ProtocolInjector.java
View File

@ -44,8 +44,6 @@ import com.comphenix.protocol.injector.packet.PacketInjector;
import com.comphenix.protocol.injector.packet.PacketRegistry;
import com.comphenix.protocol.injector.player.PlayerInjectionHandler;
import com.comphenix.protocol.injector.server.TemporaryPlayerFactory;
import com.comphenix.protocol.injector.spigot.AbstractPacketInjector;
import com.comphenix.protocol.injector.spigot.AbstractPlayerHandler;
import com.comphenix.protocol.reflect.FuzzyReflection;
import com.comphenix.protocol.reflect.VolatileField;
import com.comphenix.protocol.utility.MinecraftReflection;

64
src/main/java/com/comphenix/protocol/injector/packet/CaptureInputStream.java
View File

@ -1,64 +0,0 @@
package com.comphenix.protocol.injector.packet;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* Represents an input stream that stores every read block of bytes in another output stream.
*
* @author Kristian
*/
class CaptureInputStream extends FilterInputStream {
protected OutputStream out;
public CaptureInputStream(InputStream in, OutputStream out) {
super(in);
this.out = out;
}
@Override
public int read() throws IOException {
int value = super.read();
// Write the byte
if (value >= 0)
out.write(value);
return value;
}
@Override
public void close() throws IOException {
super.close();
out.close();
}
@Override
public int read(byte[] b) throws IOException {
int count = super.read(b);
if (count > 0 ) {
out.write(b, 0, count);
}
return count;
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
int count = super.read(b, off, len);
if (count > 0 ) {
out.write(b, off, count);
}
return count;
}
/**
* Retrieve the output stream that receives all the read information.
* @return The output stream everything is copied to.
*/
public OutputStream getOutputStream() {
return out;
}
}

154
src/main/java/com/comphenix/protocol/injector/packet/InterceptWritePacket.java
View File

@ -1,154 +0,0 @@
package com.comphenix.protocol.injector.packet;
import java.io.DataOutput;
import java.lang.reflect.Method;
import java.util.concurrent.ConcurrentMap;
import net.sf.cglib.proxy.Callback;
import net.sf.cglib.proxy.CallbackFilter;
import net.sf.cglib.proxy.Enhancer;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.events.NetworkMarker;
import com.comphenix.protocol.events.PacketEvent;
import com.comphenix.protocol.reflect.MethodInfo;
import com.comphenix.protocol.reflect.fuzzy.FuzzyMethodContract;
import com.comphenix.protocol.utility.EnhancerFactory;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.google.common.collect.Maps;
/**
* Retrieve a packet instance that has its write method intercepted.
* @author Kristian
*/
public class InterceptWritePacket {
public static final ReportType REPORT_CANNOT_FIND_WRITE_PACKET_METHOD = new ReportType("Cannot find write packet method in %s.");
public static final ReportType REPORT_CANNOT_CONSTRUCT_WRITE_PROXY = new ReportType("Cannot construct write proxy packet %s.");
/**
* Matches the readPacketData(DataInputStream) method in Packet.
*/
private static FuzzyMethodContract WRITE_PACKET = FuzzyMethodContract.newBuilder().
returnTypeVoid().
parameterDerivedOf(DataOutput.class).
parameterCount(1).
build();
private CallbackFilter filter;
private boolean writePacketIntercepted;
private ConcurrentMap<Integer, Class<?>> proxyClasses = Maps.newConcurrentMap();
private ErrorReporter reporter;
private WritePacketModifier modifierWrite;
private WritePacketModifier modifierRest;
public InterceptWritePacket(ErrorReporter reporter) {
this.reporter = reporter;
// Initialize modifiers
this.modifierWrite = new WritePacketModifier(reporter, true);
this.modifierRest = new WritePacketModifier(reporter, false);
}
// TODO: PacketId should probably do something...
private Class<?> createProxyClass() {
// Construct the proxy object
Enhancer ex = EnhancerFactory.getInstance().createEnhancer();
// Attempt to share callback filter
if (filter == null) {
filter = new CallbackFilter() {
@Override
public int accept(Method method) {
// Skip methods defined in Object
if (WRITE_PACKET.isMatch(MethodInfo.fromMethod(method), null)) {
writePacketIntercepted = true;
return 0;
} else {
return 1;
}
}
};
}
// Subclass the generic packet class
ex.setSuperclass(MinecraftReflection.getPacketClass());
ex.setCallbackFilter(filter);
ex.setUseCache(false);
ex.setCallbackTypes( new Class[] { WritePacketModifier.class, WritePacketModifier.class });
Class<?> proxyClass = ex.createClass();
// Register write modifiers too
Enhancer.registerStaticCallbacks(proxyClass, new Callback[] { modifierWrite, modifierRest });
if (proxyClass != null) {
// Check that we found the read method
if (!writePacketIntercepted) {
reporter.reportWarning(this,
Report.newBuilder(REPORT_CANNOT_FIND_WRITE_PACKET_METHOD).
messageParam(MinecraftReflection.getPacketClass()));
}
}
return proxyClass;
}
@SuppressWarnings("deprecation")
private Class<?> getProxyClass(int packetId) {
Class<?> stored = proxyClasses.get(packetId);
// Concurrent pattern
if (stored == null) {
final Class<?> created = createProxyClass();
stored = proxyClasses.putIfAbsent(packetId, created);
// We won!
if (stored == null) {
stored = created;
PacketRegistry.getPacketToID().put(stored, packetId);
}
}
return stored;
}
/**
* Construct a new instance of the proxy object.
* @param proxyObject - Object to construct proxy of
* @param event - Packet event
* @param marker - Network marker
* @return New instance of the proxy, or null if we failed.
*/
@SuppressWarnings("deprecation")
public Object constructProxy(Object proxyObject, PacketEvent event, NetworkMarker marker) {
Class<?> proxyClass = null;
try {
proxyClass = getProxyClass(event.getPacketID());
Object generated = proxyClass.newInstance();
modifierWrite.register(generated, proxyObject, event, marker);
modifierRest.register(generated, proxyObject, event, marker);
return generated;
} catch (Exception e) {
reporter.reportWarning(this,
Report.newBuilder(REPORT_CANNOT_CONSTRUCT_WRITE_PROXY).
messageParam(proxyClass));
return null;
}
}
/**
* Invoked when the write packet proxy class should be removed.
*/
@SuppressWarnings("deprecation")
public void cleanup() {
// Remove all proxy classes from the registry
for (Class<?> stored : proxyClasses.values()) {
PacketRegistry.getPacketToID().remove(stored);
}
}
}

66
src/main/java/com/comphenix/protocol/injector/packet/InverseMaps.java
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@ -1,66 +0,0 @@
package com.comphenix.protocol.injector.packet;
import java.util.Map;
import com.google.common.base.Predicate;
import com.google.common.collect.ForwardingMap;
import com.google.common.collect.ForwardingMultimap;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.Maps;
import com.google.common.collect.Multimap;
public class InverseMaps {
private InverseMaps() {
// Not constructable
}
public static <K, V> Multimap<K, V> inverseMultimap(final Map<V, K> map, final Predicate<Map.Entry<V, K>> filter) {
final MapContainer container = new MapContainer(map);
return new ForwardingMultimap<K, V>() {
// The cached multimap
private Multimap<K, V> inverseMultimap;
@Override
protected Multimap<K, V> delegate() {
if (container.hasChanged()) {
inverseMultimap = HashMultimap.create();
// Construct the inverse map
for (Map.Entry<V, K> entry : map.entrySet()) {
if (filter.apply(entry)) {
inverseMultimap.put(entry.getValue(), entry.getKey());
}
}
container.setChanged(false);
}
return inverseMultimap;
}
};
}
public static <K, V> Map<K, V> inverseMap(final Map<V, K> map, final Predicate<Map.Entry<V, K>> filter) {
final MapContainer container = new MapContainer(map);
return new ForwardingMap<K, V>() {
// The cached map
private Map<K, V> inverseMap;
@Override
protected Map<K, V> delegate() {
if (container.hasChanged()) {
inverseMap = Maps.newHashMap();
// Construct the inverse map
for (Map.Entry<V, K> entry : map.entrySet()) {
if (filter.apply(entry)) {
inverseMap.put(entry.getValue(), entry.getKey());
}
}
container.setChanged(false);
}
return inverseMap;
}
};
}
}

65
src/main/java/com/comphenix/protocol/injector/packet/LegacyNetworkMarker.java
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@ -1,65 +0,0 @@
package com.comphenix.protocol.injector.packet;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import javax.annotation.Nonnull;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.events.ConnectionSide;
import com.comphenix.protocol.events.NetworkMarker;
import com.google.common.io.ByteSource;
import com.google.common.primitives.Bytes;
/**
* Represents a network marker for 1.6.4 and earlier.
* @author Kristian
*/
public class LegacyNetworkMarker extends NetworkMarker {
public LegacyNetworkMarker(@Nonnull ConnectionSide side, byte[] inputBuffer, PacketType type) {
super(side, inputBuffer, type);
}
public LegacyNetworkMarker(@Nonnull ConnectionSide side, ByteBuffer inputBuffer, PacketType type) {
super(side, inputBuffer, type);
}
@Override
protected DataInputStream skipHeader(DataInputStream input) throws IOException {
// This has already been done
return input;
}
@Override
protected ByteBuffer addHeader(ByteBuffer buffer, PacketType type) {
return ByteBuffer.wrap(Bytes.concat(new byte[] { (byte) type.getLegacyId() }, buffer.array()));
}
@Override
protected DataInputStream addHeader(final DataInputStream input, final PacketType type) {
ByteSource header = new ByteSource() {
@Override
public InputStream openStream() throws IOException {
byte[] data = new byte[] { (byte) type.getLegacyId() };
return new ByteArrayInputStream(data);
}
};
ByteSource data = new ByteSource() {
@Override
public InputStream openStream() throws IOException {
return input;
}
};
// Combine them into a single stream
try {
return new DataInputStream(ByteSource.concat(header, data).openStream());
} catch (IOException e) {
throw new RuntimeException("Cannot add header.", e);
}
}
}

334
src/main/java/com/comphenix/protocol/injector/packet/LegacyPacketRegistry.java
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@ -1,334 +0,0 @@
package com.comphenix.protocol.injector.packet;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import javax.annotation.Nullable;
import net.sf.cglib.proxy.Factory;
import com.comphenix.protocol.reflect.FieldAccessException;
import com.comphenix.protocol.reflect.FieldUtils;
import com.comphenix.protocol.reflect.FuzzyReflection;
import com.comphenix.protocol.reflect.fuzzy.FuzzyClassContract;
import com.comphenix.protocol.reflect.fuzzy.FuzzyFieldContract;
import com.comphenix.protocol.reflect.fuzzy.FuzzyMethodContract;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.comphenix.protocol.wrappers.TroveWrapper;
import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.common.collect.Multimap;
@SuppressWarnings("rawtypes")
class LegacyPacketRegistry {
private static final int MIN_SERVER_PACKETS = 5;
private static final int MIN_CLIENT_PACKETS = 5;
// Fuzzy reflection
private FuzzyReflection packetRegistry;
// The packet class to packet ID translator
private Map<Class, Integer> packetToID;
// Packet IDs to classes, grouped by whether or not they're vanilla or custom defined
private Multimap<Integer, Class> customIdToPacket;
private Map<Integer, Class> vanillaIdToPacket;
// Whether or not certain packets are sent by the client or the server
private ImmutableSet<Integer> serverPackets;
private ImmutableSet<Integer> clientPackets;
// The underlying sets
private Set<Integer> serverPacketsRef;
private Set<Integer> clientPacketsRef;
// New proxy values
private Map<Integer, Class> overwrittenPackets = new HashMap<Integer, Class>();
// Vanilla packets
private Map<Integer, Class> previousValues = new HashMap<Integer, Class>();
/**
* Initialize the registry.
*/
@SuppressWarnings({ "unchecked" })
public void initialize() {
if (packetToID == null) {
try {
Field packetsField = getPacketRegistry().getFieldByType("packetsField", Map.class);
packetToID = (Map<Class, Integer>) FieldUtils.readStaticField(packetsField, true);
} catch (IllegalArgumentException e) {
// Spigot 1.2.5 MCPC workaround
try {
packetToID = getSpigotWrapper();
} catch (Exception e2) {
// Very bad indeed
throw new IllegalArgumentException(e.getMessage() + "; Spigot workaround failed.", e2);
}
} catch (IllegalAccessException e) {
throw new RuntimeException("Unable to retrieve the packetClassToIdMap", e);
}
// Create the inverse maps
customIdToPacket = InverseMaps.inverseMultimap(packetToID, new Predicate<Map.Entry<Class, Integer>>() {
@Override
public boolean apply(@Nullable Entry<Class, Integer> entry) {
return !MinecraftReflection.isMinecraftClass(entry.getKey());
}
});
// And the vanilla pack - here we assume a unique ID to class mapping
vanillaIdToPacket = InverseMaps.inverseMap(packetToID, new Predicate<Map.Entry<Class, Integer>>() {
@Override
public boolean apply(@Nullable Entry<Class, Integer> entry) {
return MinecraftReflection.isMinecraftClass(entry.getKey());
}
});
}
initializeSets();
}
@SuppressWarnings("unchecked")
private void initializeSets() throws FieldAccessException {
if (serverPacketsRef == null || clientPacketsRef == null) {
List<Field> sets = getPacketRegistry().getFieldListByType(Set.class);
try {
if (sets.size() > 1) {
serverPacketsRef = (Set<Integer>) FieldUtils.readStaticField(sets.get(0), true);
clientPacketsRef = (Set<Integer>) FieldUtils.readStaticField(sets.get(1), true);
// Impossible
if (serverPacketsRef == null || clientPacketsRef == null)
throw new FieldAccessException("Packet sets are in an illegal state.");
// NEVER allow callers to modify the underlying sets
serverPackets = ImmutableSet.copyOf(serverPacketsRef);
clientPackets = ImmutableSet.copyOf(clientPacketsRef);
// Check sizes
if (serverPackets.size() < MIN_SERVER_PACKETS)
throw new InsufficientPacketsException("Insufficient server packets.", false, serverPackets.size());
if (clientPackets.size() < MIN_CLIENT_PACKETS)
throw new InsufficientPacketsException("Insufficient client packets.", true, clientPackets.size());
} else {
throw new FieldAccessException("Cannot retrieve packet client/server sets.");
}
} catch (IllegalAccessException e) {
throw new FieldAccessException("Cannot access field.", e);
}
} else {
// Copy over again if it has changed
if (serverPacketsRef != null && serverPacketsRef.size() != serverPackets.size())
serverPackets = ImmutableSet.copyOf(serverPacketsRef);
if (clientPacketsRef != null && clientPacketsRef.size() != clientPackets.size())
clientPackets = ImmutableSet.copyOf(clientPacketsRef);
}
}
/**
* Retrieve the packet mapping.
* @return The packet map.
*/
public Map<Class, Integer> getPacketToID() {
// Initialize it, if we haven't already
if (packetToID == null) {
initialize();
}
return packetToID;
}
private Map<Class, Integer> getSpigotWrapper() throws IllegalAccessException {
// If it talks like a duck, etc.
// Perhaps it would be nice to have a proper duck typing library as well
FuzzyClassContract mapLike = FuzzyClassContract.newBuilder().
method(FuzzyMethodContract.newBuilder().
nameExact("size").returnTypeExact(int.class)).
method(FuzzyMethodContract.newBuilder().
nameExact("put").parameterCount(2)).
method(FuzzyMethodContract.newBuilder().
nameExact("get").parameterCount(1)).
build();
Field packetsField = getPacketRegistry().getField(
FuzzyFieldContract.newBuilder().typeMatches(mapLike).build());
Object troveMap = FieldUtils.readStaticField(packetsField, true);
// Fix incorrect no entry values
TroveWrapper.transformNoEntryValue(troveMap, new Function<Integer, Integer>() {
public Integer apply(Integer value) {
if (value >= 0 && value < 256) {
// Someone forgot to set the no entry value. Let's help them.
return -1;
}
return value;
}
});
// We'll assume this a Trove map
return TroveWrapper.getDecoratedMap(troveMap);
}
/**
* Retrieve the cached fuzzy reflection instance allowing access to the packet registry.
* @return Reflected packet registry.
*/
private FuzzyReflection getPacketRegistry() {
if (packetRegistry == null)
packetRegistry = FuzzyReflection.fromClass(MinecraftReflection.getPacketClass(), true);
return packetRegistry;
}
/**
* Retrieve the injected proxy classes handlig each packet ID.
* @return Injected classes.
*/
public Map<Integer, Class> getOverwrittenPackets() {
return overwrittenPackets;
}
/**
* Retrieve the vanilla classes handling each packet ID.
* @return Vanilla classes.
*/
public Map<Integer, Class> getPreviousPackets() {
return previousValues;
}
/**
* Retrieve every known and supported server packet.
* @return An immutable set of every known server packet.
* @throws FieldAccessException If we're unable to retrieve the server packet data from Minecraft.
*/
public Set<Integer> getServerPackets() throws FieldAccessException {
initializeSets();
// Sanity check. This is impossible!
if (serverPackets != null && serverPackets.size() < MIN_SERVER_PACKETS)
throw new FieldAccessException("Server packet list is empty. Seems to be unsupported");
return serverPackets;
}
/**
* Retrieve every known and supported client packet.
* @return An immutable set of every known client packet.
* @throws FieldAccessException If we're unable to retrieve the client packet data from Minecraft.
*/
public Set<Integer> getClientPackets() throws FieldAccessException {
initializeSets();
// As above
if (clientPackets != null && clientPackets.size() < MIN_CLIENT_PACKETS)
throw new FieldAccessException("Client packet list is empty. Seems to be unsupported");
return clientPackets;
}
/**
* Retrieves the correct packet class from a given packet ID.
* @param packetID - the packet ID.
* @return The associated class.
*/
public Class getPacketClassFromID(int packetID) {
return getPacketClassFromID(packetID, false);
}
/**
* Retrieves the correct packet class from a given packet ID.
* @param packetID - the packet ID.
* @param forceVanilla - whether or not to look for vanilla classes, not injected classes.
* @return The associated class.
*/
public Class getPacketClassFromID(int packetID, boolean forceVanilla) {
Map<Integer, Class> lookup = forceVanilla ? previousValues : overwrittenPackets;
Class<?> result = null;
// Optimized lookup
if (lookup.containsKey(packetID)) {
return removeEnhancer(lookup.get(packetID), forceVanilla);
}
// Refresh lookup tables
getPacketToID();
// See if we can look for non-vanilla classes
if (!forceVanilla) {
result = Iterables.getFirst(customIdToPacket.get(packetID), null);
}
if (result == null) {
result = vanillaIdToPacket.get(packetID);
}
// See if we got it
if (result != null)
return result;
else
throw new IllegalArgumentException("The packet ID " + packetID + " is not registered.");
}
/**
* Retrieve the packet ID of a given packet.
* @param packet - the type of packet to check.
* @return The ID of the given packet.
* @throws IllegalArgumentException If this is not a valid packet.
*/
public int getPacketID(Class<?> packet) {
if (packet == null)
throw new IllegalArgumentException("Packet type class cannot be NULL.");
if (!MinecraftReflection.getPacketClass().isAssignableFrom(packet))
throw new IllegalArgumentException("Type must be a packet.");
// The registry contains both the overridden and original packets
return getPacketToID().get(packet);
}
/**
* Find the first superclass that is not a CBLib proxy object.
* @param clazz - the class whose hierachy we're going to search through.
* @param remove - whether or not to skip enhanced (proxy) classes.
* @return If remove is TRUE, the first superclass that is not a proxy.
*/
private static Class removeEnhancer(Class clazz, boolean remove) {
if (remove) {
// Get the underlying vanilla class
while (Factory.class.isAssignableFrom(clazz) && !clazz.equals(Object.class)) {
clazz = clazz.getSuperclass();
}
}
return clazz;
}
/**
* Occurs when we were unable to retrieve all the packets in the registry.
* @author Kristian
*/
public static class InsufficientPacketsException extends RuntimeException {
private static final long serialVersionUID = 1L;
private final boolean client;
private final int packetCount;
private InsufficientPacketsException(String message, boolean client, int packetCount) {
super(message);
this.client = client;
this.packetCount = packetCount;
}
public boolean isClient() {
return client;
}
public int getPacketCount() {
return packetCount;
}
}
}

96
src/main/java/com/comphenix/protocol/injector/packet/PacketInjectorBuilder.java
View File

@ -1,96 +0,0 @@
package com.comphenix.protocol.injector.packet;
import javax.annotation.Nonnull;
import com.comphenix.protocol.ProtocolLibrary;
import com.comphenix.protocol.ProtocolManager;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.injector.ListenerInvoker;
import com.comphenix.protocol.injector.PacketFilterManager;
import com.comphenix.protocol.injector.player.PlayerInjectionHandler;
import com.comphenix.protocol.reflect.FieldAccessException;
import com.google.common.base.Preconditions;
/**
* A builder responsible for creating incoming packet injectors.
*
* @author Kristian
*/
public class PacketInjectorBuilder {
protected PacketInjectorBuilder() {
// No need to construct this
}
/**
* Retrieve a new packet injector builder.
* @return Injector builder.
*/
public static PacketInjectorBuilder newBuilder() {
return new PacketInjectorBuilder();
}
protected ListenerInvoker invoker;
protected ErrorReporter reporter;
protected PlayerInjectionHandler playerInjection;
/**
* The error reporter used by the created injector.
* @param reporter - new error reporter.
* @return This builder, for chaining.
*/
public PacketInjectorBuilder reporter(@Nonnull ErrorReporter reporter) {
Preconditions.checkNotNull(reporter, "reporter cannot be NULL");
this.reporter = reporter;
return this;
}
/**
* The packet stream invoker.
* @param invoker - the invoker.
* @return This builder, for chaining.
*/
public PacketInjectorBuilder invoker(@Nonnull ListenerInvoker invoker) {
Preconditions.checkNotNull(invoker, "invoker cannot be NULL");
this.invoker = invoker;
return this;
}
/**
* Set the player injection.
* @param playerInjection - the injection.
* @return This builder, for chaining.
*/
@Nonnull
public PacketInjectorBuilder playerInjection(@Nonnull PlayerInjectionHandler playerInjection) {
Preconditions.checkNotNull(playerInjection, "playerInjection cannot be NULL");
this.playerInjection = playerInjection;
return this;
}
/**
* Called before an object is created with this builder.
*/
private void initializeDefaults() {
ProtocolManager manager = ProtocolLibrary.getProtocolManager();
// Initialize with default values if we can
if (reporter == null)
reporter = ProtocolLibrary.getErrorReporter();
if (invoker == null)
invoker = (PacketFilterManager) manager;
if (playerInjection == null)
throw new IllegalStateException("Player injection parameter must be initialized.");
}
/**
* Create a packet injector using the provided fields or the default values.
* <p>
* Note that any non-null builder parameters must be set.
* @return The created injector.
* @throws FieldAccessException If anything goes wrong in terms of reflection.
*/
public PacketInjector buildInjector() throws FieldAccessException {
initializeDefaults();
return new ProxyPacketInjector(invoker, playerInjection, reporter);
}
}

126
src/main/java/com/comphenix/protocol/injector/packet/PacketRegistry.java
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@ -17,22 +17,16 @@
package com.comphenix.protocol.injector.packet;
import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.PacketType.Sender;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.injector.netty.NettyProtocolRegistry;
import com.comphenix.protocol.injector.netty.ProtocolRegistry;
import com.comphenix.protocol.reflect.FieldAccessException;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.google.common.base.Function;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
/**
* Static packet registry in Minecraft.
@ -40,19 +34,9 @@ import com.google.common.collect.Sets;
*/
@SuppressWarnings("rawtypes")
public class PacketRegistry {
public static final ReportType REPORT_CANNOT_CORRECT_TROVE_MAP = new ReportType("Unable to correct no entry value.");
public static final ReportType REPORT_INSUFFICIENT_SERVER_PACKETS = new ReportType("Too few server packets detected: %s");
public static final ReportType REPORT_INSUFFICIENT_CLIENT_PACKETS = new ReportType("Too few client packets detected: %s");
// The Netty packet registry
private static volatile ProtocolRegistry NETTY;
// Cached for Netty
private static volatile Set<Integer> LEGACY_SERVER_PACKETS;
private static volatile Set<Integer> LEGACY_CLIENT_PACKETS;
private static volatile Map<Integer, Class> LEGACY_PREVIOUS_PACKETS;
// Whether or not the registry has been initialized
private static volatile boolean INITIALIZED = false;
@ -93,13 +77,7 @@ public class PacketRegistry {
@SuppressWarnings("unchecked")
Map<Class, Integer> result = (Map) Maps.transformValues(
NETTY.getPacketClassLookup(),
new Function<PacketType, Integer>() {
@Override
public Integer apply(PacketType type) {
return type.getLegacyId();
};
});
NETTY.getPacketClassLookup(), type -> type.getLegacyId());
return result;
}
@ -114,55 +92,7 @@ public class PacketRegistry {
Map<Class, PacketType> result = (Map) NETTY.getPacketClassLookup();
return result;
}
/**
* Retrieve the injected proxy classes handlig each packet ID.
* <p>
* This is not supported in 1.7.2 and later.
* @return Injected classes.
*/
@Deprecated
public static Map<Integer, Class> getOverwrittenPackets() {
initialize();
throw new IllegalStateException("Not supported on Netty.");
}
/**
* Retrieve the vanilla classes handling each packet ID.
* @return Vanilla classes.
*/
@Deprecated
public static Map<Integer, Class> getPreviousPackets() {
initialize();
// Construct it first
if (LEGACY_PREVIOUS_PACKETS == null) {
Map<Integer, Class> map = Maps.newHashMap();
for (Entry<PacketType, Class<?>> entry : NETTY.getPacketTypeLookup().entrySet()) {
map.put(entry.getKey().getLegacyId(), entry.getValue());
}
LEGACY_PREVIOUS_PACKETS = Collections.unmodifiableMap(map);
}
return LEGACY_PREVIOUS_PACKETS;
}
/**
* Retrieve every known and supported server packet.
* <p>
* Deprecated: Use {@link #getServerPacketTypes()} instead.
* @return An immutable set of every known server packet.
* @throws FieldAccessException If we're unable to retrieve the server packet data from Minecraft.
*/
@Deprecated
public static Set<Integer> getServerPackets() throws FieldAccessException {
if (LEGACY_SERVER_PACKETS == null) {
LEGACY_SERVER_PACKETS = toLegacy(getServerPacketTypes());
}
return LEGACY_SERVER_PACKETS;
}
/**
* Retrieve every known and supported server packet type.
* @return Every server packet type.
@ -174,22 +104,6 @@ public class PacketRegistry {
return NETTY.getServerPackets();
}
/**
* Retrieve every known and supported client packet.
* <p>
* Deprecated: Use {@link #getClientPacketTypes()} instead.
* @return An immutable set of every known client packet.
* @throws FieldAccessException If we're unable to retrieve the client packet data from Minecraft.
*/
@Deprecated
public static Set<Integer> getClientPackets() throws FieldAccessException {
if (LEGACY_CLIENT_PACKETS == null) {
LEGACY_CLIENT_PACKETS = toLegacy(getClientPacketTypes());
}
return LEGACY_CLIENT_PACKETS;
}
/**
* Retrieve every known and supported server packet type.
* @return Every server packet type.
@ -200,43 +114,7 @@ public class PacketRegistry {
return NETTY.getClientPackets();
}
/**
* Convert a set of packet types to a set of integers based on the legacy packet ID.
* @param types - packet type.
* @return Set of integers.
*/
public static Set<Integer> toLegacy(Set<PacketType> types) {
Set<Integer> result = Sets.newHashSet();
for (PacketType type : types)
result.add(type.getLegacyId());
return Collections.unmodifiableSet(result);
}
/**
* Convert a set of legacy packet IDs to packet types.
* @param ids - legacy packet IDs.
* @return Set of packet types.
*/
public static Set<PacketType> toPacketTypes(Set<Integer> ids) {
return toPacketTypes(ids, null);
}
/**
* Convert a set of legacy packet IDs to packet types.
* @param ids - legacy packet IDs.
* @param preference - the sender preference, if any.
* @return Set of packet types.
*/
public static Set<PacketType> toPacketTypes(Set<Integer> ids, Sender preference) {
Set<PacketType> result = Sets.newHashSet();
for (int id : ids)
result.add(PacketType.fromLegacy(id, preference));
return Collections.unmodifiableSet(result);
}
/**
* Retrieves the correct packet class from a given packet ID.
* <p>

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/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.packet;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Map;
import java.util.Set;
import net.sf.cglib.proxy.Callback;
import net.sf.cglib.proxy.CallbackFilter;
import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.Factory;
import net.sf.cglib.proxy.NoOp;
import org.bukkit.entity.Player;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.PacketType.Sender;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.events.ConnectionSide;
import com.comphenix.protocol.events.ListenerOptions;
import com.comphenix.protocol.events.NetworkMarker;
import com.comphenix.protocol.events.PacketContainer;
import com.comphenix.protocol.events.PacketEvent;
import com.comphenix.protocol.injector.ListenerInvoker;
import com.comphenix.protocol.injector.player.PlayerInjectionHandler;
import com.comphenix.protocol.reflect.FieldAccessException;
import com.comphenix.protocol.reflect.FieldUtils;
import com.comphenix.protocol.reflect.FuzzyReflection;
import com.comphenix.protocol.reflect.MethodInfo;
import com.comphenix.protocol.reflect.fuzzy.FuzzyMethodContract;
import com.comphenix.protocol.utility.EnhancerFactory;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.comphenix.protocol.wrappers.WrappedIntHashMap;
/**
* This class is responsible for adding or removing proxy objects that intercepts received packets.
*
* @author Kristian
*/
class ProxyPacketInjector implements PacketInjector {
public static final ReportType REPORT_CANNOT_FIND_READ_PACKET_METHOD = new ReportType("Cannot find read packet method for ID %s.");
public static final ReportType REPORT_UNKNOWN_ORIGIN_FOR_PACKET = new ReportType("Timeout: Unknown origin %s for packet %s. Are you using GamePhase.LOGIN?");
/**
* Represents a way to update the packet ID to class lookup table.
* @author Kristian
*/
private static interface PacketClassLookup {
public void setLookup(int packetID, Class<?> clazz);
}
private static class IntHashMapLookup implements PacketClassLookup {
private WrappedIntHashMap intHashMap;
public IntHashMapLookup() throws IllegalAccessException {
initialize();
}
@Override
public void setLookup(int packetID, Class<?> clazz) {
intHashMap.put(packetID, clazz);
}
private void initialize() throws IllegalAccessException {
if (intHashMap == null) {
// We're looking for the first static field with a Minecraft-object. This should be a IntHashMap.
Field intHashMapField = FuzzyReflection.fromClass(MinecraftReflection.getPacketClass(), true).
getFieldByType("packetIdMap", MinecraftReflection.getIntHashMapClass());
try {
intHashMap = WrappedIntHashMap.fromHandle(
FieldUtils.readField(intHashMapField, (Object) null, true));
} catch (IllegalArgumentException e) {
throw new RuntimeException("Minecraft is incompatible.", e);
}
}
}
}
private static class ArrayLookup implements PacketClassLookup {
private Class<?>[] array;
public ArrayLookup() throws IllegalAccessException {
initialize();
}
@Override
public void setLookup(int packetID, Class<?> clazz) {
array[packetID] = clazz;
}
private void initialize() throws IllegalAccessException {
FuzzyReflection reflection = FuzzyReflection.fromClass(MinecraftReflection.getPacketClass());
// Is there a Class array with 256 elements instead?
for (Field field : reflection.getFieldListByType(Class[].class)) {
Class<?>[] test = (Class<?>[]) FieldUtils.readField(field, (Object)null);
if (test.length == 256) {
array = test;
return;
}
}
throw new IllegalArgumentException(
"Unable to find an array with the type " + Class[].class +
" in " + MinecraftReflection.getPacketClass());
}
}
/**
* Matches the readPacketData(DataInputStream) method in Packet.
*/
private static FuzzyMethodContract READ_PACKET = FuzzyMethodContract.newBuilder().
returnTypeVoid().
parameterDerivedOf(DataInput.class).
parameterCount(1).
build();
private static PacketClassLookup lookup;
// The packet filter manager
private ListenerInvoker manager;
// Error reporter
private ErrorReporter reporter;
// Allows us to determine the sender
private PlayerInjectionHandler playerInjection;
// Share callback filter
private CallbackFilter filter;
// Determine if the read packet method was found
private boolean readPacketIntercepted = false;
public ProxyPacketInjector(ListenerInvoker manager, PlayerInjectionHandler playerInjection,
ErrorReporter reporter) throws FieldAccessException {
this.manager = manager;
this.playerInjection = playerInjection;
this.reporter = reporter;
initialize();
}
@Override
public boolean isCancelled(Object packet) {
return ReadPacketModifier.isCancelled(packet);
}
@Override
public void setCancelled(Object packet, boolean cancelled) {
if (cancelled) {
ReadPacketModifier.setOverride(packet, null);
} else {
ReadPacketModifier.removeOverride(packet);
}
}
private void initialize() throws FieldAccessException {
if (lookup == null) {
try {
lookup = new IntHashMapLookup();
} catch (Exception e1) {
try {
lookup = new ArrayLookup();
} catch (Exception e2) {
// Wow
throw new FieldAccessException(e1.getMessage() + ". Workaround failed too.", e2);
}
}
// Should work fine now
}
}
@Override
public void inputBuffersChanged(Set<PacketType> set) {
// No need to do anything
}
@Override
@SuppressWarnings({"rawtypes", "deprecation"})
public boolean addPacketHandler(PacketType type, Set<ListenerOptions> options) {
final int packetID = type.getLegacyId();
if (hasPacketHandler(type))
return false;
Enhancer ex = EnhancerFactory.getInstance().createEnhancer();
// Unfortunately, we can't easily distinguish between these two functions:
// * Object lookup(int par1)
// * Object removeObject(int par1)
// So, we'll use the classMapToInt registry instead.
Map<Integer, Class> overwritten = PacketRegistry.getOverwrittenPackets();
Map<Integer, Class> previous = PacketRegistry.getPreviousPackets();
Map<Class, Integer> registry = PacketRegistry.getPacketToID();
Class old = PacketRegistry.getPacketClassFromType(type);
// If this packet is not known
if (old == null) {
throw new IllegalStateException("Packet ID " + type + " is not a valid packet type in this version.");
}
// Check for previous injections
if (Factory.class.isAssignableFrom(old)) {
throw new IllegalStateException("Packet " + type + " has already been injected.");
}
if (filter == null) {
readPacketIntercepted = false;
filter = new CallbackFilter() {
@Override
public int accept(Method method) {
// Skip methods defined in Object
if (method.getDeclaringClass().equals(Object.class)) {
return 0;
} else if (READ_PACKET.isMatch(MethodInfo.fromMethod(method), null)) {
readPacketIntercepted = true;
return 1;
} else {
return 2;
}
}
};
}
// Subclass the specific packet class
ex.setSuperclass(old);
ex.setCallbackFilter(filter);
ex.setCallbackTypes(new Class<?>[] { NoOp.class, ReadPacketModifier.class, ReadPacketModifier.class });
Class proxy = ex.createClass();
// Create the proxy handlers
ReadPacketModifier modifierReadPacket = new ReadPacketModifier(packetID, this, reporter, true);
ReadPacketModifier modifierRest = new ReadPacketModifier(packetID, this, reporter, false);
// Add a static reference
Enhancer.registerStaticCallbacks(proxy, new Callback[] { NoOp.INSTANCE, modifierReadPacket, modifierRest });
// Check that we found the read method
if (!readPacketIntercepted) {
reporter.reportWarning(this,
Report.newBuilder(REPORT_CANNOT_FIND_READ_PACKET_METHOD).messageParam(packetID));
}
// Override values
previous.put(packetID, old);
registry.put(proxy, packetID);
overwritten.put(packetID, proxy);
lookup.setLookup(packetID, proxy);
return true;
}
@Override
@SuppressWarnings({"rawtypes", "deprecation"})
public boolean removePacketHandler(PacketType type) {
final int packetID = type.getLegacyId();
if (!hasPacketHandler(type))
return false;
Map<Class, Integer> registry = PacketRegistry.getPacketToID();
Map<Integer, Class> previous = PacketRegistry.getPreviousPackets();
Map<Integer, Class> overwritten = PacketRegistry.getOverwrittenPackets();
Class old = previous.get(packetID);
Class proxy = PacketRegistry.getPacketClassFromType(type);
lookup.setLookup(packetID, old);
previous.remove(packetID);
registry.remove(proxy);
overwritten.remove(packetID);
return true;
}
/**
* Determine if the data a packet read must be buffered.
* @param packetId - the packet to check.
* @return TRUE if it does, FALSE otherwise.
*/
@Deprecated
public boolean requireInputBuffers(int packetId) {
return manager.requireInputBuffer(packetId);
}
@SuppressWarnings("deprecation")
@Override
public boolean hasPacketHandler(PacketType type) {
return PacketRegistry.getPreviousPackets().containsKey(type.getLegacyId());
}
@SuppressWarnings("deprecation")
@Override
public Set<PacketType> getPacketHandlers() {
return PacketRegistry.toPacketTypes(PacketRegistry.getPreviousPackets().keySet(), Sender.CLIENT);
}
// Called from the ReadPacketModified monitor
public PacketEvent packetRecieved(PacketContainer packet, InputStream input, byte[] buffered) {
if (playerInjection.canRecievePackets()) {
return playerInjection.handlePacketRecieved(packet, input, buffered);
}
try {
Player client = playerInjection.getPlayerByConnection((DataInputStream) input);
// Never invoke a event if we don't know where it's from
if (client != null) {
return packetRecieved(packet, client, buffered);
} else {
// The timeout elapsed!
reporter.reportDetailed(this, Report.newBuilder(REPORT_UNKNOWN_ORIGIN_FOR_PACKET).messageParam(input, packet.getType()));
return null;
}
} catch (InterruptedException e) {
// We will ignore this - it occurs when a player disconnects
//reporter.reportDetailed(this, "Thread was interrupted.", e, packet, input);
return null;
}
}
@Override
public PacketEvent packetRecieved(PacketContainer packet, Player client, byte[] buffered) {
NetworkMarker marker = buffered != null ? new LegacyNetworkMarker(ConnectionSide.CLIENT_SIDE, buffered, packet.getType()) : null;
PacketEvent event = PacketEvent.fromClient(manager, packet, marker, client);
manager.invokePacketRecieving(event);
return event;
}
@Override
@SuppressWarnings({"rawtypes", "deprecation"})
public synchronized void cleanupAll() {
Map<Integer, Class> overwritten = PacketRegistry.getOverwrittenPackets();
Map<Integer, Class> previous = PacketRegistry.getPreviousPackets();
// Remove every packet handler
for (Integer id : previous.keySet().toArray(new Integer[0])) {
removePacketHandler(PacketType.findLegacy(id, Sender.CLIENT));
removePacketHandler(PacketType.findLegacy(id, Sender.SERVER));
}
overwritten.clear();
previous.clear();
}
}

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/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.packet;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.InputStream;
import java.lang.reflect.Method;
import java.util.Map;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.PacketType.Sender;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.events.NetworkMarker;
import com.comphenix.protocol.events.PacketContainer;
import com.comphenix.protocol.events.PacketEvent;
import com.comphenix.protocol.injector.NetworkProcessor;
import com.google.common.collect.MapMaker;
class ReadPacketModifier implements MethodInterceptor {
public static final ReportType REPORT_CANNOT_HANDLE_CLIENT_PACKET = new ReportType("Cannot handle client packet.");
// A cancel marker
private static final Object CANCEL_MARKER = new Object();
// Common for all packets of the same type
private ProxyPacketInjector packetInjector;
private int packetID;
// Report errors
private ErrorReporter reporter;
private NetworkProcessor processor;
// If this is a read packet data method
private boolean isReadPacketDataMethod;
// Whether or not a packet has been cancelled
private static Map<Object, Object> override = new MapMaker().weakKeys().makeMap();
public ReadPacketModifier(int packetID, ProxyPacketInjector packetInjector, ErrorReporter reporter, boolean isReadPacketDataMethod) {
this.packetID = packetID;
this.packetInjector = packetInjector;
this.reporter = reporter;
this.processor = new NetworkProcessor(reporter);
this.isReadPacketDataMethod = isReadPacketDataMethod;
}
/**
* Remove any packet overrides.
* @param packet - the packet to rever
*/
public static void removeOverride(Object packet) {
override.remove(packet);
}
/**
* Retrieve the packet that overrides the methods of the given packet.
* @param packet - the given packet.
* @return Overriden object.
*/
public static Object getOverride(Object packet) {
return override.get(packet);
}
/**
* Set the packet instance to delegate to instead, or mark the packet as cancelled.
* <p>
* To undo a override, use {@link #removeOverride(Object)}.
* @param packet - the packet.
* @param override - the override method. NULL to cancel this packet.
*/
public static void setOverride(Object packet, Object overridePacket) {
override.put(packet, overridePacket != null ? overridePacket : CANCEL_MARKER);
}
/**
* Determine if the given packet has been cancelled before.
* @param packet - the packet to check.
* @return TRUE if it has been cancelled, FALSE otherwise.
*/
public static boolean isCancelled(Object packet) {
return getOverride(packet) == CANCEL_MARKER;
}
@SuppressWarnings("deprecation")
@Override
public Object intercept(Object thisObj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
// Atomic retrieval
Object overridenObject = override.get(thisObj);
Object returnValue = null;
// We need this in order to get the correct player
InputStream input = isReadPacketDataMethod ? (InputStream) args[0] : null;
ByteArrayOutputStream bufferStream = null;
// See if we need to buffer the read data
if (isReadPacketDataMethod && packetInjector.requireInputBuffers(packetID)) {
CaptureInputStream captured = new CaptureInputStream(
input, bufferStream = new ByteArrayOutputStream());
// Swap it with our custom stream
args[0] = new DataInputStream(captured);
}
if (overridenObject != null) {
// This packet has been cancelled
if (overridenObject == CANCEL_MARKER) {
// So, cancel all void methods
if (method.getReturnType().equals(Void.TYPE))
return null;
else // Revert to normal for everything else
overridenObject = thisObj;
}
returnValue = proxy.invokeSuper(overridenObject, args);
} else {
returnValue = proxy.invokeSuper(thisObj, args);
}
// Is this a readPacketData method?
if (isReadPacketDataMethod) {
// Swap back custom stream
args[0] = input;
try {
byte[] buffer = bufferStream != null ? bufferStream.toByteArray() : null;
// Let the people know
PacketType type = PacketType.findLegacy(packetID, Sender.CLIENT);
PacketContainer container = new PacketContainer(type, thisObj);
PacketEvent event = packetInjector.packetRecieved(container, input, buffer);
// Handle override
if (event != null) {
Object result = event.getPacket().getHandle();
if (event.isCancelled()) {
override.put(thisObj, CANCEL_MARKER);
return returnValue;
} else if (!objectEquals(thisObj, result)) {
override.put(thisObj, result);
}
// This is fine - received packets are enqueued in any case
NetworkMarker marker = NetworkMarker.getNetworkMarker(event);
processor.invokePostEvent(event, marker);
}
} catch (OutOfMemoryError e) {
throw e;
} catch (ThreadDeath e) {
throw e;
} catch (Throwable e) {
// Minecraft cannot handle this error
reporter.reportDetailed(this,
Report.newBuilder(REPORT_CANNOT_HANDLE_CLIENT_PACKET).callerParam(args[0]).error(e)
);
}
}
return returnValue;
}
private boolean objectEquals(Object a, Object b) {
return System.identityHashCode(a) != System.identityHashCode(b);
}
}

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/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.packet;
import java.io.ByteArrayOutputStream;
import java.io.DataOutput;
import java.io.DataOutputStream;
import java.lang.reflect.Method;
import java.util.Map;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.events.NetworkMarker;
import com.comphenix.protocol.events.PacketEvent;
import com.comphenix.protocol.injector.NetworkProcessor;
import com.google.common.collect.MapMaker;
public class WritePacketModifier implements MethodInterceptor {
public static final ReportType REPORT_CANNOT_WRITE_SERVER_PACKET = new ReportType("Cannot write server packet.");
private static class ProxyInformation {
// Marker that contains custom writers
public final Object proxyObject;
public final PacketEvent event;
public final NetworkMarker marker;
public ProxyInformation(Object proxyObject, PacketEvent event, NetworkMarker marker) {
this.proxyObject = proxyObject;
this.event = event;
this.marker = marker;
}
}
private Map<Object, ProxyInformation> proxyLookup = new MapMaker().weakKeys().makeMap();
// Report errors
private final ErrorReporter reporter;
private final NetworkProcessor processor;
// Whether or not this represents the write method
private boolean isWriteMethod;
public WritePacketModifier(ErrorReporter reporter, boolean isWriteMethod) {
this.reporter = reporter;
this.processor = new NetworkProcessor(reporter);
this.isWriteMethod = isWriteMethod;
}
/**
* Associate the given generated instance of a class and the given parameteters.
* @param generatedClass - the generated class.
* @param proxyObject - the object to call from the generated class.
* @param event - the packet event.
* @param marker - the network marker.
*/
public void register(Object generatedClass, Object proxyObject, PacketEvent event, NetworkMarker marker) {
proxyLookup.put(generatedClass, new ProxyInformation(proxyObject, event, marker));
}
@Override
public Object intercept(Object thisObj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
ProxyInformation information = proxyLookup.get(thisObj);
if (information == null) {
// This is really bad - someone forgot to register the proxy
throw new RuntimeException("Cannot find proxy information for " + thisObj);
}
if (isWriteMethod) {
// If every output handler has been removed - ignore everything
if (!information.marker.getOutputHandlers().isEmpty()) {
try {
DataOutput output = (DataOutput) args[0];
// First - we need the initial buffer
ByteArrayOutputStream outputBufferStream = new ByteArrayOutputStream();
proxy.invoke(information.proxyObject, new Object[] { new DataOutputStream(outputBufferStream) });
// Let each handler prepare the actual output
byte[] outputBuffer = processor.processOutput(information.event, information.marker,
outputBufferStream.toByteArray());
// Write that output to the network stream
output.write(outputBuffer);
// We're done
processor.invokePostEvent(information.event, information.marker);
return null;
} catch (OutOfMemoryError e) {
throw e;
} catch (ThreadDeath e) {
throw e;
} catch (Throwable e) {
// Minecraft cannot handle this error
reporter.reportDetailed(this,
Report.newBuilder(REPORT_CANNOT_WRITE_SERVER_PACKET).callerParam(args[0]).error(e)
);
}
}
// Invoke this write method first
proxy.invoke(information.proxyObject, args);
processor.invokePostEvent(information.event, information.marker);
return null;
}
// Default to the super method
return proxy.invoke(information.proxyObject, args);
}
}

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/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.player;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Set;
import java.util.concurrent.ConcurrentMap;
import net.sf.cglib.proxy.Callback;
import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.ProtocolLibrary;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.injector.ListenerInvoker;
import com.comphenix.protocol.injector.player.NetworkFieldInjector.FakePacket;
import com.comphenix.protocol.utility.EnhancerFactory;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.google.common.collect.MapMaker;
/**
* The array list that notifies when packets are sent by the server.
*
* @author Kristian
*/
class InjectedArrayList extends ArrayList<Object> {
public static final ReportType REPORT_CANNOT_REVERT_CANCELLED_PACKET = new ReportType("Reverting cancelled packet failed.");
/**
* Silly Eclipse.
*/
private static final long serialVersionUID = -1173865905404280990L;
// Fake inverted proxy objects
private static ConcurrentMap<Object, Object> delegateLookup = new MapMaker().weakKeys().makeMap();
private transient PlayerInjector injector;
private transient Set<Object> ignoredPackets;
private transient InvertedIntegerCallback callback;
public InjectedArrayList(PlayerInjector injector, Set<Object> ignoredPackets) {
this.injector = injector;
this.ignoredPackets = ignoredPackets;
this.callback = new InvertedIntegerCallback();
}
@Override
public boolean add(Object packet) {
Object result = null;
// Check for fake packets and ignored packets
if (packet instanceof FakePacket) {
return true;
} else if (ignoredPackets.contains(packet)) {
// Don't send it to the filters
result = ignoredPackets.remove(packet);
} else {
result = injector.handlePacketSending(packet);
}
// A NULL packet indicate cancelling
try {
if (result != null) {
super.add(result);
} else {
// We'll use the FakePacket marker instead of preventing the filters
injector.sendServerPacket(createNegativePacket(packet), null, true);
}
// Collection.add contract
return true;
} catch (InvocationTargetException e) {
// Prefer to report this to the user, instead of risking sending it to Minecraft
ProtocolLibrary.getErrorReporter().reportDetailed(this,
Report.newBuilder(REPORT_CANNOT_REVERT_CANCELLED_PACKET).error(e).callerParam(packet)
);
// Failure
return false;
}
}
/**
* Used by a hack that reverses the effect of a cancelled packet. Returns a packet
* whereby every int method's return value is inverted (a => -a).
*
* @param source - packet to invert.
* @return The inverted packet.
*/
@SuppressWarnings("deprecation")
Object createNegativePacket(Object source) {
ListenerInvoker invoker = injector.getInvoker();
PacketType type = invoker.getPacketType(source);
// We want to subtract the byte amount that were added to the running
// total of outstanding packets. Otherwise, cancelling too many packets
// might cause a "disconnect.overflow" error.
//
// We do that by constructing a special packet of the same type that returns
// a negative integer for all zero-parameter integer methods. This includes the
// size() method, which is used by the queue method to count the number of
// bytes to add.
//
// Essentially, we have:
//
// public class NegativePacket extends [a packet] {
// @Override
// public int size() {
// return -super.size();
// }
// ect.
// }
Enhancer ex = EnhancerFactory.getInstance().createEnhancer();
ex.setSuperclass(MinecraftReflection.getPacketClass());
ex.setInterfaces(new Class[] { FakePacket.class } );
ex.setUseCache(true);
ex.setCallbackType(InvertedIntegerCallback.class);
Class<?> proxyClass = ex.createClass();
Enhancer.registerCallbacks(proxyClass, new Callback[] { callback });
try {
// Temporarily associate the fake packet class
invoker.registerPacketClass(proxyClass, type.getLegacyId());
Object proxy = proxyClass.newInstance();
InjectedArrayList.registerDelegate(proxy, source);
return proxy;
} catch (Exception e) {
// Don't pollute the throws tree
throw new RuntimeException("Cannot create fake class.", e);
} finally {
// Remove this association
invoker.unregisterPacketClass(proxyClass);
}
}
/**
* Ensure that the inverted integer proxy uses the given object as source.
* @param proxy - inverted integer proxy.
* @param source - source object.
*/
private static void registerDelegate(Object proxy, Object source) {
delegateLookup.put(proxy, source);
}
/**
* Inverts the integer result of every integer method.
* @author Kristian
*/
private class InvertedIntegerCallback implements MethodInterceptor {
@Override
public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
final Object delegate = delegateLookup.get(obj);
if (delegate == null) {
throw new IllegalStateException("Unable to find delegate source for " + obj);
}
if (method.getReturnType().equals(int.class) && args.length == 0) {
Integer result = (Integer) proxy.invoke(delegate, args);
return -result;
} else {
return proxy.invoke(delegate, args);
}
}
}
}

442
src/main/java/com/comphenix/protocol/injector/player/InjectedServerConnection.java
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@ -1,442 +0,0 @@
/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.player;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import net.sf.cglib.proxy.Factory;
import org.bukkit.Server;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.injector.server.AbstractInputStreamLookup;
import com.comphenix.protocol.reflect.FieldAccessException;
import com.comphenix.protocol.reflect.FieldUtils;
import com.comphenix.protocol.reflect.FuzzyReflection;
import com.comphenix.protocol.reflect.ObjectWriter;
import com.comphenix.protocol.reflect.VolatileField;
import com.comphenix.protocol.utility.MinecraftReflection;
/**
* Used to ensure that the 1.3 server is referencing the correct server handler.
*
* @author Kristian
*/
public class InjectedServerConnection {
// A number of things can go wrong ...
public static final ReportType REPORT_CANNOT_FIND_MINECRAFT_SERVER = new ReportType("Cannot extract minecraft server from Bukkit.");
public static final ReportType REPORT_CANNOT_INJECT_SERVER_CONNECTION = new ReportType("Cannot inject into server connection. Bad things will happen.");
public static final ReportType REPORT_CANNOT_FIND_LISTENER_THREAD = new ReportType("Cannot find listener thread in MinecraftServer.");
public static final ReportType REPORT_CANNOT_READ_LISTENER_THREAD = new ReportType("Unable to read the listener thread.");
public static final ReportType REPORT_CANNOT_FIND_SERVER_CONNECTION = new ReportType("Unable to retrieve server connection");
public static final ReportType REPORT_UNEXPECTED_THREAD_COUNT = new ReportType("Unexpected number of threads in %s: %s");
public static final ReportType REPORT_CANNOT_FIND_NET_HANDLER_THREAD = new ReportType("Unable to retrieve net handler thread.");
public static final ReportType REPORT_INSUFFICENT_THREAD_COUNT = new ReportType("Unable to inject %s lists in %s.");
public static final ReportType REPORT_CANNOT_COPY_OLD_TO_NEW = new ReportType("Cannot copy old %s to new.");
private static Field listenerThreadField;
private static Field minecraftServerField;
private static Field listField;
private static Field dedicatedThreadField;
private static Method serverConnectionMethod;
private List<VolatileField> listFields;
private List<ReplacedArrayList<Object>> replacedLists;
// The current detected server socket
public enum ServerSocketType {
SERVER_CONNECTION,
LISTENER_THREAD,
}
// Used to inject net handlers
private NetLoginInjector netLoginInjector;
// Inject server connections
private AbstractInputStreamLookup socketInjector;
// Detected by the initializer
private ServerSocketType socketType;
private Server server;
private ErrorReporter reporter;
private boolean hasAttempted;
private boolean hasSuccess;
private Object minecraftServer = null;
public InjectedServerConnection(ErrorReporter reporter, AbstractInputStreamLookup socketInjector, Server server, NetLoginInjector netLoginInjector) {
this.listFields = new ArrayList<VolatileField>();
this.replacedLists = new ArrayList<ReplacedArrayList<Object>>();
this.reporter = reporter;
this.server = server;
this.socketInjector = socketInjector;
this.netLoginInjector = netLoginInjector;
}
/**
* Retrieve the current server connection.
* @param reporter - error reproter.
* @param server - the current server.
* @return The current server connection, or NULL if it hasn't been initialized yet.
* @throws FieldAccessException Reflection error.
*/
public static Object getServerConnection(ErrorReporter reporter, Server server) {
try {
// Now we are probably able to check for Netty
InjectedServerConnection inspector = new InjectedServerConnection(reporter, null, server, null);
return inspector.getServerConnection();
} catch (IllegalAccessException e) {
throw new FieldAccessException("Reflection error.", e);
} catch (IllegalArgumentException e) {
throw new FieldAccessException("Corrupt data.", e);
} catch (InvocationTargetException e) {
throw new FieldAccessException("Minecraft error.", e);
}
}
/**
* Initial reflective detective work. Will be automatically called by most methods in this class.
*/
public void initialize() {
// Only execute this method once
if (!hasAttempted)
hasAttempted = true;
else
return;
if (minecraftServerField == null)
minecraftServerField = FuzzyReflection.fromObject(server, true).
getFieldByType("MinecraftServer", MinecraftReflection.getMinecraftServerClass());
try {
minecraftServer = FieldUtils.readField(minecraftServerField, server, true);
} catch (IllegalAccessException e1) {
reporter.reportWarning(this, Report.newBuilder(REPORT_CANNOT_FIND_MINECRAFT_SERVER));
return;
}
try {
if (serverConnectionMethod == null)
serverConnectionMethod = FuzzyReflection.fromClass(minecraftServerField.getType()).
getMethodByParameters("getServerConnection",
MinecraftReflection.getServerConnectionClass(), new Class[] {});
// We're using Minecraft 1.3.1
socketType = ServerSocketType.SERVER_CONNECTION;
} catch (IllegalArgumentException e) {
// Minecraft 1.2.5 or lower
socketType = ServerSocketType.LISTENER_THREAD;
} catch (Exception e) {
// Oh damn - inform the player
reporter.reportDetailed(this, Report.newBuilder(REPORT_CANNOT_INJECT_SERVER_CONNECTION).error(e));
}
}
/**
* Retrieve the known server socket type.
* <p>
* This depends on the version of CraftBukkit we are using.
* @return The server socket type.
*/
public ServerSocketType getServerSocketType() {
return socketType;
}
/**
* Inject the connection interceptor into the correct server socket implementation.
*/
public void injectList() {
initialize();
if (socketType == ServerSocketType.SERVER_CONNECTION) {
injectServerConnection();
} else if (socketType == ServerSocketType.LISTENER_THREAD) {
injectListenerThread();
} else {
// Damn it
throw new IllegalStateException("Unable to detected server connection.");
}
}
/**
* Retrieve the listener thread field.
*/
private void initializeListenerField() {
if (listenerThreadField == null)
listenerThreadField = FuzzyReflection.fromObject(minecraftServer).
getFieldByType("networkListenThread", MinecraftReflection.getNetworkListenThreadClass());
}
/**
* Retrieve the listener thread object, or NULL the server isn't using this socket implementation.
* @return The listener thread, or NULL.
* @throws IllegalAccessException Cannot access field.
* @throws RuntimeException Unexpected class structure - the field doesn't exist.
*/
public Object getListenerThread() throws RuntimeException, IllegalAccessException {
initialize();
if (socketType == ServerSocketType.LISTENER_THREAD) {
initializeListenerField();
return listenerThreadField.get(minecraftServer);
} else {
return null;
}
}
/**
* Retrieve the server connection object, or NULL if the server isn't using it as the socket implementation.
* @return The socket connection, or NULL.
* @throws IllegalAccessException If the reflective operation failed.
* @throws IllegalArgumentException If the reflective operation failed.
* @throws InvocationTargetException If the reflective operation failed.
*/
public Object getServerConnection() throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
initialize();
if (socketType == ServerSocketType.SERVER_CONNECTION)
return serverConnectionMethod.invoke(minecraftServer);
else
return null;
}
private void injectListenerThread() {
try {
initializeListenerField();
} catch (RuntimeException e) {
reporter.reportDetailed(this,
Report.newBuilder(REPORT_CANNOT_FIND_LISTENER_THREAD).callerParam(minecraftServer).error(e)
);
return;
}
Object listenerThread = null;
// Attempt to get the thread
try {
listenerThread = getListenerThread();
} catch (Exception e) {
reporter.reportWarning(this, Report.newBuilder(REPORT_CANNOT_READ_LISTENER_THREAD).error(e));
return;
}
// Inject the server socket too
injectServerSocket(listenerThread);
// Just inject every list field we can get
injectEveryListField(listenerThread, 1);
hasSuccess = true;
}
private void injectServerConnection() {
Object serverConnection = null;
// Careful - we might fail
try {
serverConnection = getServerConnection();
} catch (Exception e) {
reporter.reportDetailed(this,
Report.newBuilder(REPORT_CANNOT_FIND_SERVER_CONNECTION).callerParam(minecraftServer).error(e)
);
return;
}
if (listField == null)
listField = FuzzyReflection.fromClass(serverConnectionMethod.getReturnType(), true).
getFieldByType("netServerHandlerList", List.class);
if (dedicatedThreadField == null) {
List<Field> matches = FuzzyReflection.fromObject(serverConnection, true).
getFieldListByType(Thread.class);
// Verify the field count
if (matches.size() != 1)
reporter.reportWarning(this,
Report.newBuilder(REPORT_UNEXPECTED_THREAD_COUNT).messageParam(serverConnection.getClass(), matches.size())
);
else
dedicatedThreadField = matches.get(0);
}
// Next, try to get the dedicated thread
try {
if (dedicatedThreadField != null) {
Object dedicatedThread = FieldUtils.readField(dedicatedThreadField, serverConnection, true);
// Inject server socket and NetServerHandlers.
injectServerSocket(dedicatedThread);
injectEveryListField(dedicatedThread, 1);
}
} catch (IllegalAccessException e) {
reporter.reportWarning(this, Report.newBuilder(REPORT_CANNOT_FIND_NET_HANDLER_THREAD).error(e));
}
injectIntoList(serverConnection, listField);
hasSuccess = true;
}
private void injectServerSocket(Object container) {
socketInjector.inject(container);
}
/**
* Automatically inject into every List-compatible public or private field of the given object.
* @param container - container object with the fields to inject.
* @param minimum - the minimum number of fields we expect exists.
*/
private void injectEveryListField(Object container, int minimum) {
// Ok, great. Get every list field
List<Field> lists = FuzzyReflection.fromObject(container, true).getFieldListByType(List.class);
for (Field list : lists) {
injectIntoList(container, list);
}
// Warn about unexpected errors
if (lists.size() < minimum) {
reporter.reportWarning(this, Report.newBuilder(REPORT_INSUFFICENT_THREAD_COUNT).messageParam(minimum, container.getClass()));
}
}
@SuppressWarnings("unchecked")
private void injectIntoList(Object instance, Field field) {
VolatileField listFieldRef = new VolatileField(field, instance, true);
List<Object> list = (List<Object>) listFieldRef.getValue();
// Careful not to inject twice
if (list instanceof ReplacedArrayList) {
replacedLists.add((ReplacedArrayList<Object>) list);
} else {
ReplacedArrayList<Object> injectedList = createReplacement(list);
replacedLists.add(injectedList);
listFieldRef.setValue(injectedList);
listFields.add(listFieldRef);
}
}
// Hack to avoid the "moved to quickly" error
private ReplacedArrayList<Object> createReplacement(List<Object> list) {
return new ReplacedArrayList<Object>(list) {
/**
* Shut up Eclipse!
*/
private static final long serialVersionUID = 2070481080950500367L;
// Object writer we'll use
private final ObjectWriter writer = new ObjectWriter();
@Override
protected void onReplacing(Object inserting, Object replacement) {
// Is this a normal Minecraft object?
if (!(inserting instanceof Factory)) {
// If so, copy the content of the old element to the new
try {
writer.copyTo(inserting, replacement, inserting.getClass());
} catch (OutOfMemoryError e) {
throw e;
} catch (ThreadDeath e) {
throw e;
} catch (Throwable e) {
reporter.reportDetailed(InjectedServerConnection.this,
Report.newBuilder(REPORT_CANNOT_COPY_OLD_TO_NEW).messageParam(inserting).callerParam(inserting, replacement).error(e)
);
}
}
}
@Override
protected void onInserting(Object inserting) {
// Ready for some login handler injection?
if (MinecraftReflection.isLoginHandler(inserting)) {
Object replaced = netLoginInjector.onNetLoginCreated(inserting);
// Only replace if it has changed
if (inserting != replaced)
addMapping(inserting, replaced, true);
}
}
@Override
protected void onRemoved(Object removing) {
// Clean up?
if (MinecraftReflection.isLoginHandler(removing)) {
netLoginInjector.cleanup(removing);
}
}
};
}
/**
* Replace the server handler instance kept by the "keep alive" object.
* @param oldHandler - old server handler.
* @param newHandler - new, proxied server handler.
*/
public void replaceServerHandler(Object oldHandler, Object newHandler) {
if (!hasAttempted) {
injectList();
}
if (hasSuccess) {
for (ReplacedArrayList<Object> replacedList : replacedLists) {
replacedList.addMapping(oldHandler, newHandler);
}
}
}
/**
* Revert to the old vanilla server handler, if it has been replaced.
* @param oldHandler - old vanilla server handler.
*/
public void revertServerHandler(Object oldHandler) {
if (hasSuccess) {
for (ReplacedArrayList<Object> replacedList : replacedLists) {
replacedList.removeMapping(oldHandler);
}
}
}
/**
* Undoes everything.
*/
public void cleanupAll() {
if (replacedLists.size() > 0) {
// Repair the underlying lists
for (ReplacedArrayList<Object> replacedList : replacedLists) {
replacedList.revertAll();
}
for (VolatileField field : listFields) {
field.revertValue();
}
listFields.clear();
replacedLists.clear();
}
}
}

162
src/main/java/com/comphenix/protocol/injector/player/NetLoginInjector.java
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/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.player;
import java.util.concurrent.ConcurrentMap;
import org.bukkit.Server;
import org.bukkit.entity.Player;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.injector.GamePhase;
import com.comphenix.protocol.injector.player.PlayerInjectionHandler.ConflictStrategy;
import com.comphenix.protocol.injector.server.TemporaryPlayerFactory;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.google.common.collect.Maps;
/**
* Injects every NetLoginHandler created by the server.
*
* @author Kristian
*/
class NetLoginInjector {
public static final ReportType REPORT_CANNOT_HOOK_LOGIN_HANDLER = new ReportType("Unable to hook %s.");
public static final ReportType REPORT_CANNOT_CLEANUP_LOGIN_HANDLER = new ReportType("Cannot cleanup %s.");
private ConcurrentMap<Object, PlayerInjector> injectedLogins = Maps.newConcurrentMap();
// Handles every hook
private ProxyPlayerInjectionHandler injectionHandler;
// Create temporary players
private TemporaryPlayerFactory playerFactory = new TemporaryPlayerFactory();
// The current error reporter
private ErrorReporter reporter;
private Server server;
public NetLoginInjector(ErrorReporter reporter, Server server, ProxyPlayerInjectionHandler injectionHandler) {
this.reporter = reporter;
this.server = server;
this.injectionHandler = injectionHandler;
}
/**
* Invoked when a NetLoginHandler has been created.
* @param inserting - the new NetLoginHandler.
* @return An injected NetLoginHandler, or the original object.
*/
public Object onNetLoginCreated(Object inserting) {
try {
// Make sure we actually need to inject during this phase
if (!injectionHandler.isInjectionNecessary(GamePhase.LOGIN))
return inserting;
Player temporary = playerFactory.createTemporaryPlayer(server);
// Note that we bail out if there's an existing player injector
PlayerInjector injector = injectionHandler.injectPlayer(
temporary, inserting, ConflictStrategy.BAIL_OUT, GamePhase.LOGIN);
if (injector != null) {
// Update injector as well
TemporaryPlayerFactory.setInjectorInPlayer(temporary, injector);
injector.updateOnLogin = true;
// Save the login
injectedLogins.putIfAbsent(inserting, injector);
}
// NetServerInjector can never work (currently), so we don't need to replace the NetLoginHandler
return inserting;
} catch (OutOfMemoryError e) {
throw e;
} catch (ThreadDeath e) {
throw e;
} catch (Throwable e) {
// Minecraft can't handle this, so we'll deal with it here
reporter.reportDetailed(this,
Report.newBuilder(REPORT_CANNOT_HOOK_LOGIN_HANDLER).
messageParam(MinecraftReflection.getNetLoginHandlerName()).
callerParam(inserting, injectionHandler).
error(e)
);
return inserting;
}
}
/**
* Invoked when a NetLoginHandler should be reverted.
* @param inserting - the original NetLoginHandler.
* @return An injected NetLoginHandler, or the original object.
*/
public synchronized void cleanup(Object removing) {
PlayerInjector injected = injectedLogins.get(removing);
if (injected != null) {
try {
PlayerInjector newInjector = null;
Player player = injected.getPlayer();
// Clean up list
injectedLogins.remove(removing);
// No need to clean up twice
if (injected.isClean())
return;
// Hack to clean up other references
newInjector = injectionHandler.getInjectorByNetworkHandler(injected.getNetworkManager());
injectionHandler.uninjectPlayer(player);
// Update NetworkManager
if (newInjector != null) {
if (injected instanceof NetworkObjectInjector) {
newInjector.setNetworkManager(injected.getNetworkManager(), true);
}
}
} catch (OutOfMemoryError e) {
throw e;
} catch (ThreadDeath e) {
throw e;
} catch (Throwable e) {
// Don't leak this to Minecraft
reporter.reportDetailed(this,
Report.newBuilder(REPORT_CANNOT_CLEANUP_LOGIN_HANDLER).
messageParam(MinecraftReflection.getNetLoginHandlerName()).
callerParam(removing).
error(e)
);
}
}
}
/**
* Remove all injected hooks.
*/
public void cleanupAll() {
for (PlayerInjector injector : injectedLogins.values()) {
injector.cleanupAll();
}
injectedLogins.clear();
}
}

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src/main/java/com/comphenix/protocol/injector/player/NetworkFieldInjector.java
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@ -1,221 +0,0 @@
/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.player;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import org.bukkit.entity.Player;
import com.comphenix.protocol.Packets;
import com.comphenix.protocol.concurrency.IntegerSet;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.events.ListeningWhitelist;
import com.comphenix.protocol.events.NetworkMarker;
import com.comphenix.protocol.events.PacketListener;
import com.comphenix.protocol.injector.GamePhase;
import com.comphenix.protocol.injector.ListenerInvoker;
import com.comphenix.protocol.injector.PlayerInjectHooks;
import com.comphenix.protocol.reflect.FieldUtils;
import com.comphenix.protocol.reflect.FuzzyReflection;
import com.comphenix.protocol.reflect.StructureModifier;
import com.comphenix.protocol.reflect.VolatileField;
import com.comphenix.protocol.utility.MinecraftVersion;
import com.google.common.collect.Sets;
/**
* Injection hook that overrides the packet queue lists in NetworkHandler.
*
* @author Kristian
*/
class NetworkFieldInjector extends PlayerInjector {
/**
* Marker interface that indicates a packet is fake and should not be processed.
* @author Kristian
*/
public interface FakePacket {
// Nothing
}
// After commit 336a4e00668fd2518c41242755ed6b3bdc3b0e6c (Update CraftBukkit to Minecraft 1.4.4.),
// CraftBukkit stopped redirecting map chunk and map chunk bulk packets to a separate queue.
// Thus, NetworkFieldInjector can safely handle every packet (though not perfectly - some packets
// will be slightly processed).
private MinecraftVersion safeVersion = new MinecraftVersion("1.4.4");
// Packets to ignore
private Set<Object> ignoredPackets = Sets.newSetFromMap(new ConcurrentHashMap<Object, Boolean>());
// Overridden fields
private List<VolatileField> overridenLists = new ArrayList<VolatileField>();
// Sync field
private static Field syncField;
private Object syncObject;
// Determine if we're listening
private IntegerSet sendingFilters;
public NetworkFieldInjector(ErrorReporter reporter, Player player, ListenerInvoker manager, IntegerSet sendingFilters) {
super(reporter, player, manager);
this.sendingFilters = sendingFilters;
}
@Override
protected boolean hasListener(int packetID) {
return sendingFilters.contains(packetID);
}
@Override
public synchronized void initialize(Object injectionSource) throws IllegalAccessException {
super.initialize(injectionSource);
// Get the sync field as well
if (hasInitialized) {
if (syncField == null)
syncField = FuzzyReflection.fromObject(networkManager, true).getFieldByType("java\\.lang\\.Object");
syncObject = FieldUtils.readField(syncField, networkManager, true);
}
}
@Override
public void sendServerPacket(Object packet, NetworkMarker marker, boolean filtered) throws InvocationTargetException {
if (networkManager != null) {
try {
if (!filtered) {
ignoredPackets.add(packet);
}
if (marker != null) {
queuedMarkers.put(packet, marker);
}
// Note that invocation target exception is a wrapper for a checked exception
queueMethod.invoke(networkManager, packet);
} catch (IllegalArgumentException e) {
throw e;
} catch (InvocationTargetException e) {
throw e;
} catch (IllegalAccessException e) {
throw new IllegalStateException("Unable to access queue method.", e);
}
} else {
throw new IllegalStateException("Unable to load network mananager. Cannot send packet.");
}
}
@Override
public UnsupportedListener checkListener(MinecraftVersion version, PacketListener listener) {
if (version != null && version.compareTo(safeVersion) > 0) {
return null;
} else {
@SuppressWarnings("deprecation")
int[] unsupported = { Packets.Server.MAP_CHUNK, Packets.Server.MAP_CHUNK_BULK };
// Unfortunately, we don't support chunk packets
if (ListeningWhitelist.containsAny(listener.getSendingWhitelist(), unsupported)) {
return new UnsupportedListener("The NETWORK_FIELD_INJECTOR hook doesn't support map chunk listeners.", unsupported);
} else {
return null;
}
}
}
@Override
public void injectManager() {
if (networkManager != null) {
@SuppressWarnings("rawtypes")
StructureModifier<List> list = networkModifier.withType(List.class);
// Subclass both send queues
for (Field field : list.getFields()) {
VolatileField overwriter = new VolatileField(field, networkManager, true);
@SuppressWarnings("unchecked")
List<Object> minecraftList = (List<Object>) overwriter.getOldValue();
synchronized(syncObject) {
// The list we'll be inserting
List<Object> hackedList = new InjectedArrayList(this, ignoredPackets);
// Add every previously stored packet
for (Object packet : minecraftList) {
hackedList.add(packet);
}
// Don' keep stale packets around
minecraftList.clear();
overwriter.setValue(Collections.synchronizedList(hackedList));
}
overridenLists.add(overwriter);
}
}
}
@Override
@SuppressWarnings("unchecked")
protected void cleanHook() {
// Clean up
for (VolatileField overriden : overridenLists) {
List<Object> minecraftList = (List<Object>) overriden.getOldValue();
List<Object> hacketList = (List<Object>) overriden.getValue();
if (minecraftList == hacketList) {
return;
}
// Get a lock before we modify the list
synchronized(syncObject) {
try {
// Copy over current packets
for (Object packet : (List<Object>) overriden.getValue()) {
minecraftList.add(packet);
}
} finally {
overriden.revertValue();
}
}
}
overridenLists.clear();
}
@Override
public void handleDisconnect() {
// No need to do anything
}
@Override
public boolean canInject(GamePhase phase) {
// All phases should work
return true;
}
@Override
public PlayerInjectHooks getHookType() {
return PlayerInjectHooks.NETWORK_HANDLER_FIELDS;
}
}

230
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/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.player;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import net.sf.cglib.proxy.Callback;
import net.sf.cglib.proxy.CallbackFilter;
import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.LazyLoader;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;
import org.bukkit.Server;
import org.bukkit.entity.Player;
import com.comphenix.protocol.Packets;
import com.comphenix.protocol.concurrency.IntegerSet;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.events.ListeningWhitelist;
import com.comphenix.protocol.events.NetworkMarker;
import com.comphenix.protocol.events.PacketListener;
import com.comphenix.protocol.injector.GamePhase;
import com.comphenix.protocol.injector.ListenerInvoker;
import com.comphenix.protocol.injector.PlayerInjectHooks;
import com.comphenix.protocol.injector.server.TemporaryPlayerFactory;
import com.comphenix.protocol.utility.EnhancerFactory;
import com.comphenix.protocol.utility.MinecraftVersion;
/**
* Injection method that overrides the NetworkHandler itself, and its queue-method.
*
* @author Kristian
*/
public class NetworkObjectInjector extends PlayerInjector {
// Determine if we're listening
private IntegerSet sendingFilters;
// After commit 336a4e00668fd2518c41242755ed6b3bdc3b0e6c (Update CraftBukkit to Minecraft 1.4.4.),
// CraftBukkit stopped redirecting map chunk and map chunk bulk packets to a separate queue.
// Thus, NetworkFieldInjector can safely handle every packet (though not perfectly - some packets
// will be slightly processed).
private MinecraftVersion safeVersion = new MinecraftVersion("1.4.4");
// Shared callback filter - avoid creating a new class every time
private volatile static CallbackFilter callbackFilter;
// Temporary player factory
private static volatile TemporaryPlayerFactory tempPlayerFactory;
/**
* Create a new network object injector.
* <p>
* Note: This class is intended to be internal. Do not use.
* @param reporter - the error reporter.
* @param player - the player Bukkit entity.
* @param invoker - the packet invoker.
* @param sendingFilters - list of permitted packet IDs.
* @throws IllegalAccessException If reflection failed.
*/
public NetworkObjectInjector(ErrorReporter reporter, Player player,
ListenerInvoker invoker, IntegerSet sendingFilters) throws IllegalAccessException {
super(reporter, player, invoker);
this.sendingFilters = sendingFilters;
}
@Override
protected boolean hasListener(int packetID) {
return sendingFilters.contains(packetID);
}
/**
* Create a temporary player for use during login.
* @param server - Bukkit server.
* @return The temporary player.
*/
public Player createTemporaryPlayer(Server server) {
if (tempPlayerFactory == null)
tempPlayerFactory = new TemporaryPlayerFactory();
// Create and associate the fake player with this network injector
return tempPlayerFactory.createTemporaryPlayer(server, this);
}
@Override
public void sendServerPacket(Object packet, NetworkMarker marker, boolean filtered) throws InvocationTargetException {
Object networkDelegate = filtered ? networkManagerRef.getValue() : networkManagerRef.getOldValue();
if (networkDelegate != null) {
try {
if (marker != null) {
queuedMarkers.put(packet, marker);
}
// Note that invocation target exception is a wrapper for a checked exception
queueMethod.invoke(networkDelegate, packet);
} catch (IllegalArgumentException e) {
throw e;
} catch (InvocationTargetException e) {
throw e;
} catch (IllegalAccessException e) {
throw new IllegalStateException("Unable to access queue method.", e);
}
} else {
throw new IllegalStateException("Unable to load network mananager. Cannot send packet.");
}
}
@Override
public UnsupportedListener checkListener(MinecraftVersion version, PacketListener listener) {
if (version != null && version.compareTo(safeVersion) > 0) {
return null;
} else {
@SuppressWarnings("deprecation")
int[] unsupported = { Packets.Server.MAP_CHUNK, Packets.Server.MAP_CHUNK_BULK };
// Unfortunately, we don't support chunk packets
if (ListeningWhitelist.containsAny(listener.getSendingWhitelist(), unsupported)) {
return new UnsupportedListener("The NETWORK_OBJECT_INJECTOR hook doesn't support map chunk listeners.", unsupported);
} else {
return null;
}
}
}
@Override
public void injectManager() {
if (networkManager != null) {
final Class<?> networkInterface = networkManagerRef.getField().getType();
final Object networkDelegate = networkManagerRef.getOldValue();
if (!networkInterface.isInterface()) {
throw new UnsupportedOperationException(
"Must use CraftBukkit 1.3.0 or later to inject into into NetworkMananger.");
}
Callback queueFilter = new MethodInterceptor() {
@Override
public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
Object packet = args[0];
if (packet != null) {
packet = handlePacketSending(packet);
// A NULL packet indicate cancelling
if (packet != null)
args[0] = packet;
else
return null;
}
// Delegate to our underlying class
return proxy.invokeSuper(networkDelegate, args);
}
};
Callback dispatch = new LazyLoader() {
@Override
public Object loadObject() throws Exception {
return networkDelegate;
}
};
// Share callback filter - that way, we avoid generating a new class every time.
if (callbackFilter == null) {
callbackFilter = new CallbackFilter() {
@Override
public int accept(Method method) {
if (method.equals(queueMethod))
return 0;
else
return 1;
}
};
}
// Create our proxy object
Enhancer ex = EnhancerFactory.getInstance().createEnhancer();
ex.setSuperclass(networkInterface);
ex.setCallbacks(new Callback[] { queueFilter, dispatch });
ex.setCallbackFilter(callbackFilter);
// Inject it, if we can.
networkManagerRef.setValue(ex.create());
}
}
@Override
protected void cleanHook() {
// Clean up
if (networkManagerRef != null && networkManagerRef.isCurrentSet()) {
networkManagerRef.revertValue();
}
}
@Override
public void handleDisconnect() {
// No need to do anything
}
@Override
public boolean canInject(GamePhase phase) {
// Works for all phases
return true;
}
@Override
public PlayerInjectHooks getHookType() {
return PlayerInjectHooks.NETWORK_MANAGER_OBJECT;
}
}

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src/main/java/com/comphenix/protocol/injector/player/NetworkServerInjector.java
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@ -1,367 +0,0 @@
/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.player;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Arrays;
import net.sf.cglib.proxy.Callback;
import net.sf.cglib.proxy.CallbackFilter;
import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.Factory;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;
import net.sf.cglib.proxy.NoOp;
import org.bukkit.entity.Player;
import com.comphenix.protocol.concurrency.IntegerSet;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.events.NetworkMarker;
import com.comphenix.protocol.events.PacketListener;
import com.comphenix.protocol.injector.GamePhase;
import com.comphenix.protocol.injector.ListenerInvoker;
import com.comphenix.protocol.injector.PlayerInjectHooks;
import com.comphenix.protocol.reflect.FieldUtils;
import com.comphenix.protocol.reflect.FuzzyReflection;
import com.comphenix.protocol.reflect.ObjectWriter;
import com.comphenix.protocol.reflect.VolatileField;
import com.comphenix.protocol.reflect.instances.DefaultInstances;
import com.comphenix.protocol.reflect.instances.ExistingGenerator;
import com.comphenix.protocol.utility.EnhancerFactory;
import com.comphenix.protocol.utility.MinecraftMethods;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.comphenix.protocol.utility.MinecraftVersion;
/**
* Represents a player hook into the NetServerHandler class.
*
* @author Kristian
*/
class NetworkServerInjector extends PlayerInjector {
// Disconnected field
public static final ReportType REPORT_ASSUMING_DISCONNECT_FIELD = new ReportType("Unable to find 'disconnected' field. Assuming %s.");
public static final ReportType REPORT_DISCONNECT_FIELD_MISSING = new ReportType("Cannot find disconnected field. Is ProtocolLib up to date?");
public static final ReportType REPORT_DISCONNECT_FIELD_FAILURE = new ReportType("Unable to update disconnected field. Player quit event may be sent twice.");
private volatile static CallbackFilter callbackFilter;
private volatile static boolean foundSendPacket;
private volatile static Field disconnectField;
private InjectedServerConnection serverInjection;
// Determine if we're listening
private IntegerSet sendingFilters;
// Whether or not the player has disconnected
private boolean hasDisconnected;
// Used to copy fields
private final ObjectWriter writer = new ObjectWriter();
public NetworkServerInjector(
ErrorReporter reporter, Player player,
ListenerInvoker invoker, IntegerSet sendingFilters,
InjectedServerConnection serverInjection) {
super(reporter, player, invoker);
this.sendingFilters = sendingFilters;
this.serverInjection = serverInjection;
}
@Override
protected boolean hasListener(int packetID) {
return sendingFilters.contains(packetID);
}
@Override
public void sendServerPacket(Object packet, NetworkMarker marker, boolean filtered) throws InvocationTargetException {
Object serverDelegate = filtered ? serverHandlerRef.getValue() : serverHandlerRef.getOldValue();
if (serverDelegate != null) {
try {
if (marker != null) {
queuedMarkers.put(packet, marker);
}
// Note that invocation target exception is a wrapper for a checked exception
MinecraftMethods.getSendPacketMethod().invoke(serverDelegate, packet);
} catch (IllegalArgumentException e) {
throw e;
} catch (InvocationTargetException e) {
throw e;
} catch (IllegalAccessException e) {
throw new IllegalStateException("Unable to access send packet method.", e);
}
} else {
throw new IllegalStateException("Unable to load server handler. Cannot send packet.");
}
}
@Override
public void injectManager() {
if (serverHandlerRef == null)
throw new IllegalStateException("Cannot find server handler.");
// Don't inject twice
if (serverHandlerRef.getValue() instanceof Factory)
return;
if (!tryInjectManager()) {
Class<?> serverHandlerClass = MinecraftReflection.getPlayerConnectionClass();
// Try to override the proxied object
if (proxyServerField != null) {
serverHandlerRef = new VolatileField(proxyServerField, serverHandler, true);
serverHandler = serverHandlerRef.getValue();
if (serverHandler == null)
throw new RuntimeException("Cannot hook player: Inner proxy object is NULL.");
else
serverHandlerClass = serverHandler.getClass();
// Try again
if (tryInjectManager()) {
// It worked - probably
return;
}
}
throw new RuntimeException(
"Cannot hook player: Unable to find a valid constructor for the "
+ serverHandlerClass.getName() + " object.");
}
}
private boolean tryInjectManager() {
Class<?> serverClass = serverHandler.getClass();
Enhancer ex = EnhancerFactory.getInstance().createEnhancer();
Callback sendPacketCallback = new MethodInterceptor() {
@Override
public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
Object packet = args[0];
if (packet != null) {
packet = handlePacketSending(packet);
// A NULL packet indicate cancelling
if (packet != null)
args[0] = packet;
else
return null;
}
// Call the method directly
return proxy.invokeSuper(obj, args);
};
};
Callback noOpCallback = NoOp.INSTANCE;
// Share callback filter - that way, we avoid generating a new class for
// every logged in player.
if (callbackFilter == null) {
callbackFilter = new SendMethodFilter();
}
ex.setSuperclass(serverClass);
ex.setCallbacks(new Callback[] { sendPacketCallback, noOpCallback });
ex.setCallbackFilter(callbackFilter);
// Find the Minecraft NetServerHandler superclass
Class<?> minecraftSuperClass = getFirstMinecraftSuperClass(serverHandler.getClass());
ExistingGenerator generator = ExistingGenerator.fromObjectFields(serverHandler, minecraftSuperClass);
DefaultInstances serverInstances = null;
// Maybe the proxy instance can help?
Object proxyInstance = getProxyServerHandler();
// Use the existing server proxy when we create one
if (proxyInstance != null && proxyInstance != serverHandler) {
serverInstances = DefaultInstances.fromArray(generator,
ExistingGenerator.fromObjectArray(new Object[] { proxyInstance }));
} else {
serverInstances = DefaultInstances.fromArray(generator);
}
serverInstances.setNonNull(true);
serverInstances.setMaximumRecursion(1);
Object proxyObject = serverInstances.forEnhancer(ex).getDefault(serverClass);
// Inject it now
if (proxyObject != null) {
// Did we override a sendPacket method?
if (!foundSendPacket) {
throw new IllegalArgumentException("Unable to find a sendPacket method in " + serverClass);
}
serverInjection.replaceServerHandler(serverHandler, proxyObject);
serverHandlerRef.setValue(proxyObject);
return true;
} else {
return false;
}
}
private Object getProxyServerHandler() {
if (proxyServerField != null && !proxyServerField.equals(serverHandlerRef.getField())) {
try {
return FieldUtils.readField(proxyServerField, serverHandler, true);
} catch (OutOfMemoryError e) {
throw e;
} catch (ThreadDeath e) {
throw e;
} catch (Throwable e) {
// Oh well
}
}
return null;
}
private Class<?> getFirstMinecraftSuperClass(Class<?> clazz) {
if (MinecraftReflection.isMinecraftClass(clazz))
return clazz;
else if (clazz.equals(Object.class))
return clazz;
else
return getFirstMinecraftSuperClass(clazz.getSuperclass());
}
@Override
protected void cleanHook() {
if (serverHandlerRef != null && serverHandlerRef.isCurrentSet()) {
writer.copyTo(serverHandlerRef.getValue(), serverHandlerRef.getOldValue(), serverHandler.getClass());
serverHandlerRef.revertValue();
try {
if (getNetHandler() != null) {
// Restore packet listener
try {
FieldUtils.writeField(netHandlerField, networkManager, serverHandlerRef.getOldValue(), true);
} catch (IllegalAccessException e) {
// Oh well
e.printStackTrace();
}
}
} catch (IllegalAccessException e) {
e.printStackTrace();
}
// Prevent the PlayerQuitEvent from being sent twice
if (hasDisconnected) {
setDisconnect(serverHandlerRef.getValue(), true);
}
}
serverInjection.revertServerHandler(serverHandler);
}
@Override
public void handleDisconnect() {
hasDisconnected = true;
}
/**
* Set the disconnected field in a NetServerHandler.
* @param handler - the NetServerHandler.
* @param value - the new value.
*/
private void setDisconnect(Object handler, boolean value) {
// Set it
try {
// Load the field
if (disconnectField == null) {
disconnectField = FuzzyReflection.fromObject(handler).getFieldByName("disconnected.*");
}
FieldUtils.writeField(disconnectField, handler, value);
} catch (IllegalArgumentException e) {
// Assume it's the first ...
if (disconnectField == null) {
disconnectField = FuzzyReflection.fromObject(handler).getFieldByType("disconnected", boolean.class);
reporter.reportWarning(this, Report.newBuilder(REPORT_ASSUMING_DISCONNECT_FIELD).messageParam(disconnectField));
// Try again
if (disconnectField != null) {
setDisconnect(handler, value);
return;
}
}
// This is really bad
reporter.reportDetailed(this, Report.newBuilder(REPORT_DISCONNECT_FIELD_MISSING).error(e));
} catch (IllegalAccessException e) {
reporter.reportWarning(this, Report.newBuilder(REPORT_DISCONNECT_FIELD_FAILURE).error(e));
}
}
@Override
public UnsupportedListener checkListener(MinecraftVersion version, PacketListener listener) {
// We support everything
return null;
}
@Override
public boolean canInject(GamePhase phase) {
// Doesn't work when logging in
return phase == GamePhase.PLAYING;
}
@Override
public PlayerInjectHooks getHookType() {
return PlayerInjectHooks.NETWORK_SERVER_OBJECT;
}
/**
* Represents a CallbackFilter that only matches the SendPacket method.
* @author Kristian
*/
private static class SendMethodFilter implements CallbackFilter {
private Method sendPacket = MinecraftMethods.getSendPacketMethod();
@Override
public int accept(Method method) {
if (isCallableEqual(sendPacket, method)) {
NetworkServerInjector.foundSendPacket = true;
return 0;
} else {
return 1;
}
}
/**
* Determine if the two methods are equal in terms of call semantics.
* <p>
* Two methods are equal if they have the same name, parameter types and return type.
* @param first - first method.
* @param second - second method.
* @return TRUE if they are, FALSE otherwise.
*/
private boolean isCallableEqual(Method first, Method second) {
return first.getName().equals(second.getName()) &&
first.getReturnType().equals(second.getReturnType()) &&
Arrays.equals(first.getParameterTypes(), second.getParameterTypes());
}
}
}

760
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/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.player;
import java.io.DataInputStream;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.Socket;
import java.net.SocketAddress;
import java.util.Map;
import net.sf.cglib.proxy.Factory;
import org.bukkit.entity.Player;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.PacketType.Sender;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.events.NetworkMarker;
import com.comphenix.protocol.events.PacketContainer;
import com.comphenix.protocol.events.PacketEvent;
import com.comphenix.protocol.events.PacketListener;
import com.comphenix.protocol.injector.BukkitUnwrapper;
import com.comphenix.protocol.injector.GamePhase;
import com.comphenix.protocol.injector.ListenerInvoker;
import com.comphenix.protocol.injector.PlayerInjectHooks;
import com.comphenix.protocol.injector.packet.InterceptWritePacket;
import com.comphenix.protocol.injector.server.SocketInjector;
import com.comphenix.protocol.reflect.FieldUtils;
import com.comphenix.protocol.reflect.FuzzyReflection;
import com.comphenix.protocol.reflect.StructureModifier;
import com.comphenix.protocol.reflect.VolatileField;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.comphenix.protocol.utility.MinecraftVersion;
import com.google.common.collect.MapMaker;
public abstract class PlayerInjector implements SocketInjector {
// Disconnect method related reports
public static final ReportType REPORT_ASSUME_DISCONNECT_METHOD = new ReportType("Cannot find disconnect method by name. Assuming %s.");
public static final ReportType REPORT_INVALID_ARGUMENT_DISCONNECT = new ReportType("Invalid argument passed to disconnect method: %s");
public static final ReportType REPORT_CANNOT_ACCESS_DISCONNECT = new ReportType("Unable to access disconnect method.");
public static final ReportType REPORT_CANNOT_CLOSE_SOCKET = new ReportType("Unable to close socket.");
public static final ReportType REPORT_ACCESS_DENIED_CLOSE_SOCKET = new ReportType("Insufficient permissions. Cannot close socket.");
public static final ReportType REPORT_DETECTED_CUSTOM_SERVER_HANDLER =
new ReportType("Detected server handler proxy type by another plugin. Conflict may occur!");
public static final ReportType REPORT_CANNOT_PROXY_SERVER_HANDLER = new ReportType("Unable to load server handler from proxy type.");
public static final ReportType REPORT_CANNOT_UPDATE_PLAYER = new ReportType("Cannot update player in PlayerEvent.");
public static final ReportType REPORT_CANNOT_HANDLE_PACKET = new ReportType("Cannot handle server packet.");
public static final ReportType REPORT_INVALID_NETWORK_MANAGER = new ReportType("NetworkManager doesn't appear to be valid.");
// Net login handler stuff
private static Field netLoginNetworkField;
// Different disconnect methods
private static Method loginDisconnect;
private static Method serverDisconnect;
// Cache previously retrieved fields
protected static Field serverHandlerField;
protected static Field proxyServerField;
protected static Field networkManagerField;
protected static Field netHandlerField;
protected static Field socketField;
protected static Field socketAddressField;
private static Field inputField;
private static Field entityPlayerField;
// Whether or not we're using a proxy type
private static boolean hasProxyType;
// To add our injected array lists
protected static StructureModifier<Object> networkModifier;
// And methods
protected static Method queueMethod;
protected static Method processMethod;
protected volatile Player player;
protected boolean hasInitialized;
// Reference to the player's network manager
protected VolatileField networkManagerRef;
protected VolatileField serverHandlerRef;
protected Object networkManager;
// Current net handler
protected Object loginHandler;
protected Object serverHandler;
protected Object netHandler;
// Current socket and address
protected Socket socket;
protected SocketAddress socketAddress;
// The packet manager and filters
protected ListenerInvoker invoker;
// Previous data input
protected DataInputStream cachedInput;
// Handle errors
protected ErrorReporter reporter;
// Previous markers
protected Map<Object, NetworkMarker> queuedMarkers = new MapMaker().weakKeys().makeMap();
protected InterceptWritePacket writePacketInterceptor;
// Whether or not the injector has been cleaned
private boolean clean;
// Whether or not to update the current player on the first Packet1Login
boolean updateOnLogin;
volatile Player updatedPlayer;
public PlayerInjector(ErrorReporter reporter, Player player, ListenerInvoker invoker) {
this.reporter = reporter;
this.player = player;
this.invoker = invoker;
this.writePacketInterceptor = invoker.getInterceptWritePacket();
}
/**
* Retrieve the notch (NMS) entity player object.
* @param player - the player to retrieve.
* @return Notch player object.
*/
protected Object getEntityPlayer(Player player) {
BukkitUnwrapper unwrapper = new BukkitUnwrapper();
return unwrapper.unwrapItem(player);
}
/**
* Initialize all fields for this player injector, if it hasn't already.
* @param injectionSource - Injection source
* @throws IllegalAccessException An error has occured.
*/
public void initialize(Object injectionSource) throws IllegalAccessException {
if (injectionSource == null)
throw new IllegalArgumentException("injectionSource cannot be NULL");
//Dispatch to the correct injection method
if (injectionSource instanceof Player)
initializePlayer((Player) injectionSource);
else if (MinecraftReflection.isLoginHandler(injectionSource))
initializeLogin(injectionSource);
else
throw new IllegalArgumentException("Cannot initialize a player hook using a " + injectionSource.getClass().getName());
}
/**
* Initialize the player injector using an actual player instance.
* @param player - the player to hook.
*/
public void initializePlayer(Player player) {
Object notchEntity = getEntityPlayer(player);
// Save the player too
this.player = player;
if (!hasInitialized) {
// Do this first, in case we encounter an exception
hasInitialized = true;
// Retrieve the server handler
if (serverHandlerField == null) {
serverHandlerField = FuzzyReflection.fromObject(notchEntity).getFieldByType(
"NetServerHandler", MinecraftReflection.getPlayerConnectionClass());
proxyServerField = getProxyField(notchEntity, serverHandlerField);
}
// Yo dawg
serverHandlerRef = new VolatileField(serverHandlerField, notchEntity);
serverHandler = serverHandlerRef.getValue();
// Next, get the network manager
if (networkManagerField == null)
networkManagerField = FuzzyReflection.fromObject(serverHandler).getFieldByType(
"networkManager", MinecraftReflection.getNetworkManagerClass());
initializeNetworkManager(networkManagerField, serverHandler);
}
}
/**
* Initialize the player injector from a NetLoginHandler.
* @param netLoginHandler - the net login handler to inject.
*/
public void initializeLogin(Object netLoginHandler) {
if (!hasInitialized) {
// Just in case
if (!MinecraftReflection.isLoginHandler(netLoginHandler))
throw new IllegalArgumentException("netLoginHandler (" + netLoginHandler + ") is not a " +
MinecraftReflection.getNetLoginHandlerName());
hasInitialized = true;
loginHandler = netLoginHandler;
if (netLoginNetworkField == null)
netLoginNetworkField = FuzzyReflection.fromObject(netLoginHandler).
getFieldByType("networkManager", MinecraftReflection.getNetworkManagerClass());
initializeNetworkManager(netLoginNetworkField, netLoginHandler);
}
}
private void initializeNetworkManager(Field reference, Object container) {
networkManagerRef = new VolatileField(reference, container);
networkManager = networkManagerRef.getValue();
// No, don't do it
if (networkManager instanceof Factory) {
return;
}
// Create the network manager modifier from the actual object type
if (networkManager != null && networkModifier == null)
networkModifier = new StructureModifier<Object>(networkManager.getClass(), null, false);
// And the queue method
if (queueMethod == null)
queueMethod = FuzzyReflection.fromClass(reference.getType()).
getMethodByParameters("queue", MinecraftReflection.getPacketClass());
}
/**
* Retrieve whether or not the server handler is a proxy object.
* @return TRUE if it is, FALSE otherwise.
*/
protected boolean hasProxyServerHandler() {
return hasProxyType;
}
/**
* Retrieve the current network manager.
* @return Current network manager.
*/
public Object getNetworkManager() {
return networkManagerRef.getValue();
}
/**
* Retrieve the current server handler (PlayerConnection).
* @return Current server handler.
*/
public Object getServerHandler() {
return serverHandlerRef.getValue();
}
/**
* Set the current network manager.
* @param value - new network manager.
* @param force - whether or not to save this value.
*/
public void setNetworkManager(Object value, boolean force) {
networkManagerRef.setValue(value);
if (force)
networkManagerRef.saveValue();
initializeNetworkManager(networkManagerField, serverHandler);
}
/**
* Retrieve the associated socket of this player.
* @return The associated socket.
* @throws IllegalAccessException If we're unable to read the socket field.
*/
@Override
public Socket getSocket() throws IllegalAccessException {
try {
if (socketField == null)
socketField = FuzzyReflection.fromObject(networkManager, true).
getFieldListByType(Socket.class).get(0);
if (socket == null)
socket = (Socket) FieldUtils.readField(socketField, networkManager, true);
return socket;
} catch (IndexOutOfBoundsException e) {
throw new IllegalAccessException("Unable to read the socket field.");
}
}
/**
* Retrieve the associated remote address of a player.
* @return The associated remote address.
* @throws IllegalAccessException If we're unable to read the socket address field.
*/
@Override
public SocketAddress getAddress() throws IllegalAccessException {
try {
if (socketAddressField == null)
socketAddressField = FuzzyReflection.fromObject(networkManager, true).
getFieldListByType(SocketAddress.class).get(0);
if (socketAddress == null)
socketAddress = (SocketAddress) FieldUtils.readField(socketAddressField, networkManager, true);
return socketAddress;
} catch (IndexOutOfBoundsException e) {
// Inform about the state of the network manager too
reporter.reportWarning(
this, Report.newBuilder(REPORT_INVALID_NETWORK_MANAGER).callerParam(networkManager).build());
throw new IllegalAccessException("Unable to read the socket address field.");
}
}
/**
* Attempt to disconnect the current client.
* @param message - the message to display.
* @throws InvocationTargetException If disconnection failed.
*/
@Override
public void disconnect(String message) throws InvocationTargetException {
// Get a non-null handler
boolean usingNetServer = serverHandler != null;
Object handler = usingNetServer ? serverHandler : loginHandler;
Method disconnect = usingNetServer ? serverDisconnect : loginDisconnect;
// Execute disconnect on it
if (handler != null) {
if (disconnect == null) {
try {
disconnect = FuzzyReflection.fromObject(handler).getMethodByName("disconnect.*");
} catch (IllegalArgumentException e) {
// Just assume it's the first String method
disconnect = FuzzyReflection.fromObject(handler).getMethodByParameters("disconnect", String.class);
reporter.reportWarning(this, Report.newBuilder(REPORT_ASSUME_DISCONNECT_METHOD).messageParam(disconnect));
}
// Save the method for later
if (usingNetServer)
serverDisconnect = disconnect;
else
loginDisconnect = disconnect;
}
try {
disconnect.invoke(handler, message);
return;
} catch (IllegalArgumentException e) {
reporter.reportDetailed(this, Report.newBuilder(REPORT_INVALID_ARGUMENT_DISCONNECT).error(e).messageParam(message).callerParam(handler));
} catch (IllegalAccessException e) {
reporter.reportWarning(this, Report.newBuilder(REPORT_CANNOT_ACCESS_DISCONNECT).error(e));
}
}
// Fuck it
try {
Socket socket = getSocket();
try {
socket.close();
} catch (IOException e) {
reporter.reportDetailed(this, Report.newBuilder(REPORT_CANNOT_CLOSE_SOCKET).error(e).callerParam(socket));
}
} catch (IllegalAccessException e) {
reporter.reportWarning(this, Report.newBuilder(REPORT_ACCESS_DENIED_CLOSE_SOCKET).error(e));
}
}
private Field getProxyField(Object notchEntity, Field serverField) {
try {
Object currentHandler = FieldUtils.readField(serverHandlerField, notchEntity, true);
// This is bad
if (currentHandler == null)
throw new ServerHandlerNull();
// See if this isn't a standard net handler class
if (!isStandardMinecraftNetHandler(currentHandler)) {
// This is our proxy object
if (currentHandler instanceof Factory)
return null;
hasProxyType = true;
reporter.reportWarning(this, Report.newBuilder(REPORT_DETECTED_CUSTOM_SERVER_HANDLER).callerParam(serverField));
// No? Is it a Proxy type?
try {
FuzzyReflection reflection = FuzzyReflection.fromObject(currentHandler, true);
// It might be
return reflection.getFieldByType("NetServerHandler", MinecraftReflection.getPlayerConnectionClass());
} catch (RuntimeException e) {
// Damn
}
}
} catch (IllegalAccessException e) {
reporter.reportWarning(this, Report.newBuilder(REPORT_CANNOT_PROXY_SERVER_HANDLER).error(e).callerParam(notchEntity, serverField));
}
// Nope, just go with it
return null;
}
/**
* Determine if a given object is a standard Minecraft net handler.
* @param obj the object to test.
* @return TRUE if it is, FALSE otherwise.
*/
private boolean isStandardMinecraftNetHandler(Object obj) {
if (obj == null)
return false;
Class<?> clazz = obj.getClass();
return MinecraftReflection.getNetLoginHandlerClass().equals(clazz) ||
MinecraftReflection.getPlayerConnectionClass().equals(clazz);
}
/**
* Retrieves the current net handler for this player.
* @return Current net handler.
* @throws IllegalAccessException Unable to find or retrieve net handler.
*/
protected Object getNetHandler() throws IllegalAccessException {
return getNetHandler(false);
}
/**
* Retrieves the current net handler for this player.
* @param refresh - Whether or not to refresh
* @return Current net handler.
* @throws IllegalAccessException Unable to find or retrieve net handler.
* @return The current net handler for this player
*/
protected Object getNetHandler(boolean refresh) throws IllegalAccessException {
// What a mess
try {
if (netHandlerField == null)
netHandlerField = FuzzyReflection.fromClass(networkManager.getClass(), true).
getFieldByType("NetHandler", MinecraftReflection.getNetHandlerClass());
} catch (RuntimeException e1) {
// Swallow it
}
// Second attempt
if (netHandlerField == null) {
try {
// Well, that sucks. Try just Minecraft objects then.
netHandlerField = FuzzyReflection.fromClass(networkManager.getClass(), true).
getFieldByType(MinecraftReflection.getMinecraftObjectRegex());
} catch (RuntimeException e2) {
throw new IllegalAccessException("Cannot locate net handler. " + e2.getMessage());
}
}
// Get the handler
if (netHandler == null || refresh)
netHandler = FieldUtils.readField(netHandlerField, networkManager, true);
return netHandler;
}
/**
* Retrieve the stored entity player from a given NetHandler.
* @param netHandler - the nethandler to retrieve it from.
* @return The stored entity player.
* @throws IllegalAccessException If the reflection failed.
*/
private Object getEntityPlayer(Object netHandler) throws IllegalAccessException {
if (entityPlayerField == null)
entityPlayerField = FuzzyReflection.fromObject(netHandler).getFieldByType(
"EntityPlayer", MinecraftReflection.getEntityPlayerClass());
return FieldUtils.readField(entityPlayerField, netHandler);
}
/**
* Processes the given packet as if it was transmitted by the current player.
* @param packet - packet to process.
* @throws IllegalAccessException If the reflection machinery failed.
* @throws InvocationTargetException If the underlying method caused an error.
*/
public void processPacket(Object packet) throws IllegalAccessException, InvocationTargetException {
Object netHandler = getNetHandler();
// Get the process method
if (processMethod == null) {
try {
processMethod = FuzzyReflection.fromClass(MinecraftReflection.getPacketClass()).
getMethodByParameters("processPacket", netHandlerField.getType());
} catch (RuntimeException e) {
throw new IllegalArgumentException("Cannot locate process packet method: " + e.getMessage());
}
}
// We're ready
try {
processMethod.invoke(packet, netHandler);
} catch (IllegalArgumentException e) {
throw new IllegalArgumentException("Method " + processMethod.getName() + " is not compatible.");
} catch (InvocationTargetException e) {
throw e;
}
}
/**
* Send a packet to the client.
* @param packet - server packet to send.
* @param marker - the network marker.
* @param filtered - whether or not the packet will be filtered by our listeners.
* @throws InvocationTargetException If an error occured when sending the packet.
*/
@Override
public abstract void sendServerPacket(Object packet, NetworkMarker marker, boolean filtered) throws InvocationTargetException;
/**
* Inject a hook to catch packets sent to the current player.
*/
public abstract void injectManager();
/**
* Remove all hooks and modifications.
*/
public final void cleanupAll() {
if (!clean) {
cleanHook();
writePacketInterceptor.cleanup();
}
clean = true;
}
/**
* Clean up after the player has disconnected.
*/
public abstract void handleDisconnect();
/**
* Override to add custom cleanup behavior.
*/
protected abstract void cleanHook();
/**
* Determine whether or not this hook has already been cleaned.
* @return TRUE if it has, FALSE otherwise.
*/
public boolean isClean() {
return clean;
}
/**
* Determine if this inject method can even be attempted.
* @param state - Game phase
* @return TRUE if can be attempted, though possibly with failure, FALSE otherwise.
*/
public abstract boolean canInject(GamePhase state);
/**
* Retrieve the hook type this class represents.
* @return Hook type this class represents.
*/
public abstract PlayerInjectHooks getHookType();
/**
* Invoked before a new listener is registered.
* <p>
* The player injector should only return a non-null value if some or all of the packet IDs are unsupported.
* @param version - the current Minecraft version, or NULL if unknown.
* @param listener - the listener that is about to be registered.
* @return A error message with the unsupported packet IDs, or NULL if this listener is valid.
*/
public abstract UnsupportedListener checkListener(MinecraftVersion version, PacketListener listener);
/**
* Allows a packet to be sent by the listeners.
* @param packet - packet to sent.
* @return The given packet, or the packet replaced by the listeners.
*/
@SuppressWarnings({ "deprecation", "null" })
public Object handlePacketSending(Object packet) {
try {
// Get the packet ID too
Integer id = invoker.getPacketID(packet);
Player currentPlayer = player;
// Hack #1
if (updateOnLogin) {
if (updatedPlayer == null) {
try {
final Object handler = getNetHandler(true);
// Is this a net server class?
if (MinecraftReflection.getPlayerConnectionClass().isAssignableFrom(handler.getClass())) {
setUpdatedPlayer(
(Player) MinecraftReflection.getBukkitEntity(getEntityPlayer(handler))
);
}
} catch (IllegalAccessException e) {
reporter.reportDetailed(this, Report.newBuilder(REPORT_CANNOT_UPDATE_PLAYER).error(e).callerParam(packet));
}
}
// This will only occur in the NetLoginHandler injection
if (updatedPlayer != null) {
currentPlayer = updatedPlayer;
updateOnLogin = false;
}
}
// Make sure we're listening
if (id != null && hasListener(id)) {
NetworkMarker marker = queuedMarkers.remove(packet);
// A packet has been sent guys!
PacketType type = PacketType.findLegacy(id, Sender.SERVER);
PacketContainer container = new PacketContainer(type, packet);
PacketEvent event = PacketEvent.fromServer(invoker, container, marker, currentPlayer);
invoker.invokePacketSending(event);
// Cancelling is pretty simple. Just ignore the packet.
if (event.isCancelled())
return null;
// Right, remember to replace the packet again
Object result = event.getPacket().getHandle();
marker = NetworkMarker.getNetworkMarker(event);
// See if we need to proxy the write method
if (result != null && (NetworkMarker.hasOutputHandlers(marker) || NetworkMarker.hasPostListeners(marker))) {
result = writePacketInterceptor.constructProxy(result, event, marker);
}
return result;
}
} catch (OutOfMemoryError e) {
throw e;
} catch (ThreadDeath e) {
throw e;
} catch (Throwable e) {
reporter.reportDetailed(this, Report.newBuilder(REPORT_CANNOT_HANDLE_PACKET).error(e).callerParam(packet));
}
return packet;
}
/**
* Determine if the given injector is listening for this packet ID.
* @param packetID - packet ID to check.
* @return TRUE if it is, FALSE oterhwise.
*/
protected abstract boolean hasListener(int packetID);
/**
* Retrieve the current player's input stream.
* @param cache - whether or not to cache the result of this method.
* @return The player's input stream.
*/
public DataInputStream getInputStream(boolean cache) {
// And the data input stream that we'll use to identify a player
if (networkManager == null)
throw new IllegalStateException("Network manager is NULL.");
if (inputField == null)
inputField = FuzzyReflection.fromObject(networkManager, true).
getFieldByType("java\\.io\\.DataInputStream");
// Get the associated input stream
try {
if (cache && cachedInput != null)
return cachedInput;
// Save to cache
cachedInput = (DataInputStream) FieldUtils.readField(inputField, networkManager, true);
return cachedInput;
} catch (IllegalAccessException e) {
throw new RuntimeException("Unable to read input stream.", e);
}
}
/**
* Retrieve the hooked player.
*/
@Override
public Player getPlayer() {
return player;
}
/**
* Set the hooked player.
* <p>
* Should only be called during the creation of the injector.
* @param player - the new hooked player.
*/
public void setPlayer(Player player) {
this.player = player;
}
/**
* Object that can invoke the packet events.
* @return Packet event invoker.
*/
public ListenerInvoker getInvoker() {
return invoker;
}
/**
* Retrieve the hooked player object OR the more up-to-date player instance.
* @return The hooked player, or a more up-to-date instance.
*/
@Override
public Player getUpdatedPlayer() {
if (updatedPlayer != null)
return updatedPlayer;
else
return player;
}
@Override
public void transferState(SocketInjector delegate) {
// Do nothing
}
@Override
public void setUpdatedPlayer(Player updatedPlayer) {
this.updatedPlayer = updatedPlayer;
}
/**
* Indicates that a player's NetServerHandler or PlayerConnection was NULL.
* <p>
* This is usually because the player has just logged out, or due to it being a "fake" player in MCPC+/Cauldron.
* @author Kristian
*/
public static class ServerHandlerNull extends IllegalAccessError {
private static final long serialVersionUID = 1L;
public ServerHandlerNull() {
super("Unable to fetch server handler: was NUll.");
}
public ServerHandlerNull(String s) {
super(s);
}
}
}

143
src/main/java/com/comphenix/protocol/injector/player/PlayerInjectorBuilder.java
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@ -1,143 +0,0 @@
package com.comphenix.protocol.injector.player;
import java.util.Set;
import javax.annotation.Nonnull;
import org.bukkit.Bukkit;
import org.bukkit.Server;
import com.comphenix.protocol.ProtocolLibrary;
import com.comphenix.protocol.ProtocolManager;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.events.PacketListener;
import com.comphenix.protocol.injector.GamePhase;
import com.comphenix.protocol.injector.ListenerInvoker;
import com.comphenix.protocol.injector.PacketFilterManager;
import com.comphenix.protocol.utility.MinecraftVersion;
import com.google.common.base.Preconditions;
import com.google.common.base.Predicate;
/**
* Constructor for different player injectors.
*
* @author Kristian
*/
public class PlayerInjectorBuilder {
public static PlayerInjectorBuilder newBuilder() {
return new PlayerInjectorBuilder();
}
protected PlayerInjectorBuilder() {
// Use the static method.
}
protected ErrorReporter reporter;
protected Predicate<GamePhase> injectionFilter;
protected ListenerInvoker invoker;
protected Set<PacketListener> packetListeners;
protected Server server;
protected MinecraftVersion version;
/**
* The error reporter used by the created injector.
* @param reporter - new error reporter.
* @return This builder, for chaining.
*/
public PlayerInjectorBuilder reporter(@Nonnull ErrorReporter reporter) {
Preconditions.checkNotNull(reporter, "reporter cannot be NULL");
this.reporter = reporter;
return this;
}
/**
* The injection filter that is used to determine if it is necessary to perform
* injection during a certain phase.
* @param injectionFilter - filter predicate.
* @return This builder, for chaining.
*/
@Nonnull
public PlayerInjectorBuilder injectionFilter(@Nonnull Predicate<GamePhase> injectionFilter) {
Preconditions.checkNotNull(injectionFilter, "injectionFilter cannot be NULL");
this.injectionFilter = injectionFilter;
return this;
}
/**
* The packet stream invoker.
* @param invoker - the invoker.
* @return This builder, for chaining.
*/
public PlayerInjectorBuilder invoker(@Nonnull ListenerInvoker invoker) {
Preconditions.checkNotNull(invoker, "invoker cannot be NULL");
this.invoker = invoker;
return this;
}
/**
* Set the set of packet listeners.
* @param packetListeners - packet listeners.
* @return This builder, for chaining.
*/
@Nonnull
public PlayerInjectorBuilder packetListeners(@Nonnull Set<PacketListener> packetListeners) {
Preconditions.checkNotNull(packetListeners, "packetListeners cannot be NULL");
this.packetListeners = packetListeners;
return this;
}
/**
* Set the Bukkit server used for scheduling.
* @param server - the Bukkit server.
* @return This builder, for chaining.
*/
public PlayerInjectorBuilder server(@Nonnull Server server) {
Preconditions.checkNotNull(server, "server cannot be NULL");
this.server = server;
return this;
}
/**
* Set the current Minecraft version.
* @param version - the current Minecraft version, or NULL if unknown.
* @return This builder, for chaining.
*/
public PlayerInjectorBuilder version(MinecraftVersion version) {
this.version = version;
return this;
}
/**
* Called before an object is created with this builder.
*/
private void initializeDefaults() {
ProtocolManager manager = ProtocolLibrary.getProtocolManager();
// Initialize with default values if we can
if (reporter == null)
reporter = ProtocolLibrary.getErrorReporter();
if (invoker == null)
invoker = (PacketFilterManager) manager;
if (server == null)
server = Bukkit.getServer();
if (injectionFilter == null)
throw new IllegalStateException("injectionFilter must be initialized.");
if (packetListeners == null)
throw new IllegalStateException("packetListeners must be initialized.");
}
/**
* Construct the injection handler.
* <p>
* Any builder parameter marked as NON-NULL is essential and must be initialized.
* @return The constructed injection handler using the current parameters.
*/
public PlayerInjectionHandler buildHandler() {
// Fill any default fields
initializeDefaults();
return new ProxyPlayerInjectionHandler(
reporter, injectionFilter,
invoker, packetListeners, server, version);
}
}

763
src/main/java/com/comphenix/protocol/injector/player/ProxyPlayerInjectionHandler.java
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@ -1,763 +0,0 @@
/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.player;
import io.netty.channel.Channel;
import java.io.DataInputStream;
import java.io.InputStream;
import java.lang.ref.WeakReference;
import java.lang.reflect.InvocationTargetException;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.TimeUnit;
import net.sf.cglib.proxy.Factory;
import org.bukkit.Server;
import org.bukkit.entity.Player;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.PacketType.Sender;
import com.comphenix.protocol.Packets;
import com.comphenix.protocol.concurrency.BlockingHashMap;
import com.comphenix.protocol.concurrency.IntegerSet;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.events.ListenerOptions;
import com.comphenix.protocol.events.NetworkMarker;
import com.comphenix.protocol.events.PacketAdapter;
import com.comphenix.protocol.events.PacketContainer;
import com.comphenix.protocol.events.PacketEvent;
import com.comphenix.protocol.events.PacketListener;
import com.comphenix.protocol.injector.GamePhase;
import com.comphenix.protocol.injector.ListenerInvoker;
import com.comphenix.protocol.injector.PlayerInjectHooks;
import com.comphenix.protocol.injector.PlayerLoggedOutException;
import com.comphenix.protocol.injector.packet.PacketRegistry;
import com.comphenix.protocol.injector.server.AbstractInputStreamLookup;
import com.comphenix.protocol.injector.server.BukkitSocketInjector;
import com.comphenix.protocol.injector.server.InputStreamLookupBuilder;
import com.comphenix.protocol.injector.server.SocketInjector;
import com.comphenix.protocol.utility.MinecraftProtocolVersion;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.comphenix.protocol.utility.MinecraftVersion;
import com.comphenix.protocol.utility.SafeCacheBuilder;
import com.google.common.base.Objects;
import com.google.common.base.Predicate;
import com.google.common.collect.Maps;
/**
* Responsible for injecting into a player's sendPacket method.
*
* @author Kristian
*/
class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
// Warnings and errors
public static final ReportType REPORT_UNSUPPPORTED_LISTENER = new ReportType("Cannot fully register listener for %s: %s");
// Fallback to older player hook types
public static final ReportType REPORT_PLAYER_HOOK_FAILED = new ReportType("Player hook %s failed.");
public static final ReportType REPORT_SWITCHED_PLAYER_HOOK = new ReportType("Switching to %s instead.");
public static final ReportType REPORT_HOOK_CLEANUP_FAILED = new ReportType("Cleaing up after player hook failed.");
public static final ReportType REPORT_CANNOT_REVERT_HOOK = new ReportType("Unable to fully revert old injector. May cause conflicts.");
// Server connection injection
private InjectedServerConnection serverInjection;
// Server socket injection
private AbstractInputStreamLookup inputStreamLookup;
// NetLogin injector
private NetLoginInjector netLoginInjector;
// The last successful player hook
private WeakReference<PlayerInjector> lastSuccessfulHook;
// Dummy injection
private ConcurrentMap<Player, PlayerInjector> dummyInjectors =
SafeCacheBuilder.newBuilder().
expireAfterWrite(30, TimeUnit.SECONDS).
build(BlockingHashMap.<Player, PlayerInjector>newInvalidCacheLoader());
// Player injection
private Map<Player, PlayerInjector> playerInjection = Maps.newConcurrentMap();
// Player injection types
private volatile PlayerInjectHooks loginPlayerHook = PlayerInjectHooks.NETWORK_SERVER_OBJECT;
private volatile PlayerInjectHooks playingPlayerHook = PlayerInjectHooks.NETWORK_SERVER_OBJECT;
// Error reporter
private ErrorReporter reporter;
// Whether or not we're closing
private boolean hasClosed;
// Used to invoke events
private ListenerInvoker invoker;
// Current Minecraft version
private MinecraftVersion version;
// Enabled packet filters
private IntegerSet sendingFilters = new IntegerSet(Packets.MAXIMUM_PACKET_ID + 1);
// List of packet listeners
private Set<PacketListener> packetListeners;
// Used to filter injection attempts
private Predicate<GamePhase> injectionFilter;
public ProxyPlayerInjectionHandler(
ErrorReporter reporter, Predicate<GamePhase> injectionFilter,
ListenerInvoker invoker, Set<PacketListener> packetListeners, Server server, MinecraftVersion version) {
this.reporter = reporter;
this.invoker = invoker;
this.injectionFilter = injectionFilter;
this.packetListeners = packetListeners;
this.version = version;
this.inputStreamLookup = InputStreamLookupBuilder.newBuilder().
server(server).
reporter(reporter).
build();
// Create net login injectors and the server connection injector
this.netLoginInjector = new NetLoginInjector(reporter, server, this);
this.serverInjection = new InjectedServerConnection(reporter, inputStreamLookup, server, netLoginInjector);
serverInjection.injectList();
}
@Override
public int getProtocolVersion(Player player) {
// Just use the server version
return MinecraftProtocolVersion.getCurrentVersion();
}
/**
* Retrieves how the server packets are read.
* @return Injection method for reading server packets.
*/
@Override
public PlayerInjectHooks getPlayerHook() {
return getPlayerHook(GamePhase.PLAYING);
}
/**
* Retrieves how the server packets are read.
* @param phase - the current game phase.
* @return Injection method for reading server packets.
*/
@Override
public PlayerInjectHooks getPlayerHook(GamePhase phase) {
switch (phase) {
case LOGIN:
return loginPlayerHook;
case PLAYING:
return playingPlayerHook;
default:
throw new IllegalArgumentException("Cannot retrieve injection hook for both phases at the same time.");
}
}
@Override
public boolean hasMainThreadListener(PacketType type) {
return sendingFilters.contains(type.getLegacyId());
}
/**
* Sets how the server packets are read.
* @param playerHook - the new injection method for reading server packets.
*/
@Override
public void setPlayerHook(PlayerInjectHooks playerHook) {
setPlayerHook(GamePhase.PLAYING, playerHook);
}
/**
* Sets how the server packets are read.
* @param phase - the current game phase.
* @param playerHook - the new injection method for reading server packets.
*/
@Override
public void setPlayerHook(GamePhase phase, PlayerInjectHooks playerHook) {
if (phase.hasLogin())
loginPlayerHook = playerHook;
if (phase.hasPlaying())
playingPlayerHook = playerHook;
// Make sure the current listeners are compatible
checkListener(packetListeners);
}
@Override
public void addPacketHandler(PacketType type, Set<ListenerOptions> options) {
sendingFilters.add(type.getLegacyId());
}
@Override
public void removePacketHandler(PacketType type) {
sendingFilters.remove(type.getLegacyId());
}
/**
* Used to construct a player hook.
* @param player - the player to hook.
* @param hook - the hook type.
* @return A new player hoook
* @throws IllegalAccessException Unable to do our reflection magic.
*/
private PlayerInjector getHookInstance(Player player, PlayerInjectHooks hook) throws IllegalAccessException {
// Construct the correct player hook
switch (hook) {
case NETWORK_HANDLER_FIELDS:
return new NetworkFieldInjector(reporter, player, invoker, sendingFilters);
case NETWORK_MANAGER_OBJECT:
return new NetworkObjectInjector(reporter, player, invoker, sendingFilters);
case NETWORK_SERVER_OBJECT:
return new NetworkServerInjector(reporter, player, invoker, sendingFilters, serverInjection);
default:
throw new IllegalArgumentException("Cannot construct a player injector.");
}
}
/**
* Retrieve a player by its DataInput connection.
* @param inputStream - the associated DataInput connection.
* @return The player we found.
*/
@Override
public Player getPlayerByConnection(DataInputStream inputStream) {
// Wait until the connection owner has been established
SocketInjector injector = inputStreamLookup.waitSocketInjector(inputStream);
if (injector != null) {
return injector.getPlayer();
} else {
return null;
}
}
/**
* Helper function that retrieves the injector type of a given player injector.
* @param injector - injector type.
* @return The injector type.
*/
private PlayerInjectHooks getInjectorType(PlayerInjector injector) {
return injector != null ? injector.getHookType() : PlayerInjectHooks.NONE;
}
/**
* Initialize a player hook, allowing us to read server packets.
* <p>
* This call will be ignored if there's no listener that can receive the given events.
* @param player - player to hook.
* @param strategy - how to handle previous player injections.
*/
@Override
public void injectPlayer(Player player, ConflictStrategy strategy) {
// Inject using the player instance itself
if (isInjectionNecessary(GamePhase.PLAYING)) {
injectPlayer(player, player, strategy, GamePhase.PLAYING);
}
}
/**
* Determine if it's truly necessary to perform the given player injection.
* @param phase - current game phase.
* @return TRUE if we should perform the injection, FALSE otherwise.
*/
public boolean isInjectionNecessary(GamePhase phase) {
return injectionFilter.apply(phase);
}
/**
* Initialize a player hook, allowing us to read server packets.
* <p>
* This method will always perform the instructed injection.
*
* @param player - player to hook.
* @param injectionPoint - the object to use during the injection process.
* @param phase - the current game phase.
* @return The resulting player injector, or NULL if the injection failed.
*/
PlayerInjector injectPlayer(Player player, Object injectionPoint, ConflictStrategy stategy, GamePhase phase) {
if (player == null)
throw new IllegalArgumentException("Player cannot be NULL.");
if (injectionPoint == null)
throw new IllegalArgumentException("injectionPoint cannot be NULL.");
if (phase == null)
throw new IllegalArgumentException("phase cannot be NULL.");
// Unfortunately, due to NetLoginHandler, multiple threads may potentially call this method.
synchronized (player) {
return injectPlayerInternal(player, injectionPoint, stategy, phase);
}
}
// Unsafe variant of the above
private PlayerInjector injectPlayerInternal(Player player, Object injectionPoint, ConflictStrategy stategy, GamePhase phase) {
PlayerInjector injector = playerInjection.get(player);
PlayerInjectHooks tempHook = getPlayerHook(phase);
PlayerInjectHooks permanentHook = tempHook;
// The given player object may be fake, so be careful!
// See if we need to inject something else
boolean invalidInjector = injector != null ? !injector.canInject(phase) : true;
// Don't inject if the class has closed
if (!hasClosed && (tempHook != getInjectorType(injector) || invalidInjector)) {
while (tempHook != PlayerInjectHooks.NONE) {
// Whether or not the current hook method failed completely
boolean hookFailed = false;
// Remove the previous hook, if any
cleanupHook(injector);
try {
injector = getHookInstance(player, tempHook);
// Make sure this injection method supports the current game phase
if (injector.canInject(phase)) {
injector.initialize(injectionPoint);
// Get socket and socket injector
SocketAddress address = injector.getAddress();
// Ignore logged out players
if (address == null)
return null;
SocketInjector previous = inputStreamLookup.peekSocketInjector(address);
Socket socket = injector.getSocket();
// Close any previously associated hooks before we proceed
if (previous != null && !(player instanceof Factory)) {
switch (stategy) {
case OVERRIDE:
uninjectPlayer(previous.getPlayer(), true);
break;
case BAIL_OUT:
return null;
}
}
injector.injectManager();
saveAddressLookup(address, socket, injector);
break;
}
} catch (PlayerLoggedOutException e) {
throw e;
} catch (Exception e) {
// Mark this injection attempt as a failure
reporter.reportDetailed(this,
Report.newBuilder(REPORT_PLAYER_HOOK_FAILED).messageParam(tempHook).callerParam(player, injectionPoint, phase).error(e)
);
hookFailed = true;
}
// Choose the previous player hook type
tempHook = PlayerInjectHooks.values()[tempHook.ordinal() - 1];
if (hookFailed)
reporter.reportWarning(this, Report.newBuilder(REPORT_SWITCHED_PLAYER_HOOK).messageParam(tempHook));
// Check for UTTER FAILURE
if (tempHook == PlayerInjectHooks.NONE) {
cleanupHook(injector);
injector = null;
hookFailed = true;
}
// Should we set the default hook method too?
if (hookFailed) {
permanentHook = tempHook;
}
}
// Update values
if (injector != null)
lastSuccessfulHook = new WeakReference<PlayerInjector>(injector);
if (permanentHook != getPlayerHook(phase))
setPlayerHook(phase, tempHook);
// Save injector
if (injector != null) {
playerInjection.put(player, injector);
}
}
return injector;
}
private void saveAddressLookup(SocketAddress address, Socket socket, SocketInjector injector) {
SocketAddress socketAddress = socket != null ? socket.getRemoteSocketAddress() : null;
if (socketAddress != null && !Objects.equal(socketAddress, address)) {
// Save this version as well
inputStreamLookup.setSocketInjector(socketAddress, injector);
}
// Save injector
inputStreamLookup.setSocketInjector(address, injector);
}
private void cleanupHook(PlayerInjector injector) {
// Clean up as much as possible
try {
if (injector != null)
injector.cleanupAll();
} catch (Exception ex) {
reporter.reportDetailed(this, Report.newBuilder(REPORT_HOOK_CLEANUP_FAILED).callerParam(injector).error(ex));
}
}
/**
* Invoke special routines for handling disconnect before a player is uninjected.
* @param player - player to process.
*/
@Override
public void handleDisconnect(Player player) {
PlayerInjector injector = getInjector(player);
if (injector != null) {
injector.handleDisconnect();
}
}
@Override
public void updatePlayer(Player player) {
SocketAddress address = player.getAddress();
// Ignore logged out players
if (address != null) {
SocketInjector injector = inputStreamLookup.peekSocketInjector(address);
if (injector != null) {
injector.setUpdatedPlayer(player);
} else {
inputStreamLookup.setSocketInjector(player.getAddress(),
new BukkitSocketInjector(player));
}
}
}
/**
* Unregisters the given player.
* @param player - player to unregister.
* @return TRUE if a player has been uninjected, FALSE otherwise.
*/
@Override
public boolean uninjectPlayer(Player player) {
return uninjectPlayer(player, false);
}
/**
* Unregisters the given player.
* @param player - player to unregister.
* @param prepareNextHook - whether or not we need to fix any lingering hooks.
* @return TRUE if a player has been uninjected, FALSE otherwise.
*/
private boolean uninjectPlayer(Player player, boolean prepareNextHook) {
if (!hasClosed && player != null) {
PlayerInjector injector = playerInjection.remove(player);
if (injector != null) {
injector.cleanupAll();
// Remove the "hooked" network manager in our instance as well
if (prepareNextHook && injector instanceof NetworkObjectInjector) {
try {
PlayerInjector dummyInjector = getHookInstance(player, PlayerInjectHooks.NETWORK_SERVER_OBJECT);
dummyInjector.initializePlayer(player);
dummyInjector.setNetworkManager(injector.getNetworkManager(), true);
} catch (IllegalAccessException e) {
// Let the user know
reporter.reportWarning(this, Report.newBuilder(REPORT_CANNOT_REVERT_HOOK).error(e));
}
}
return true;
}
}
return false;
}
/**
* Unregisters a player by the given address.
* <p>
* If the server handler has been created before we've gotten a chance to unject the player,
* the method will try a workaround to remove the injected hook in the NetServerHandler.
*
* @param address - address of the player to unregister.
* @return TRUE if a player has been uninjected, FALSE otherwise.
*/
@Override
public boolean uninjectPlayer(InetSocketAddress address) {
if (!hasClosed && address != null) {
SocketInjector injector = inputStreamLookup.peekSocketInjector(address);
// Clean up
if (injector != null)
uninjectPlayer(injector.getPlayer(), true);
return true;
}
return false;
}
/**
* Send the given packet to the given receiver.
* @param receiver - the player receiver.
* @param packet - the packet to send.
* @param filters - whether or not to invoke the packet filters.
* @throws InvocationTargetException If an error occured during sending.
*/
@Override
public void sendServerPacket(Player receiver, PacketContainer packet, NetworkMarker marker, boolean filters) throws InvocationTargetException {
SocketInjector injector = getInjector(receiver);
// Send the packet, or drop it completely
if (injector != null) {
injector.sendServerPacket(packet.getHandle(), marker, filters);
} else {
throw new PlayerLoggedOutException(String.format(
"Unable to send packet %s (%s): Player %s has logged out.",
packet.getType(), packet, receiver
));
}
}
/**
* Recieve a packet as if it were sent by the given player.
* @param player - the sender.
* @param mcPacket - the packet to process.
* @throws IllegalAccessException If the reflection machinery failed.
* @throws InvocationTargetException If the underlying method caused an error.
*/
@Override
public void recieveClientPacket(Player player, Object mcPacket) throws IllegalAccessException, InvocationTargetException {
PlayerInjector injector = getInjector(player);
// Process the given packet, or simply give up
if (injector != null)
injector.processPacket(mcPacket);
else
throw new PlayerLoggedOutException(String.format(
"Unable to receieve packet %s. Player %s has logged out.",
mcPacket, player
));
}
/**
* Retrieve the injector associated with this player.
* @param player - the player to find.
* @return The injector, or NULL if not found.
*/
private PlayerInjector getInjector(Player player) {
PlayerInjector injector = playerInjection.get(player);
if (injector == null) {
// Try getting it from the player itself
SocketAddress address = player.getAddress();
// Must have logged out - there's nothing we can do
if (address == null)
return null;
// Look that up without blocking
SocketInjector result = inputStreamLookup.peekSocketInjector(address);
// Ensure that it is non-null and a player injector
if (result instanceof PlayerInjector)
return (PlayerInjector) result;
else
// Make a dummy injector them
return createDummyInjector(player);
} else {
return injector;
}
}
/**
* Construct a simple dummy injector incase none has been constructed.
* @param player - the CraftPlayer to construct for.
* @return A dummy injector, or NULL if the given player is not a CraftPlayer.
*/
private PlayerInjector createDummyInjector(Player player) {
if (!MinecraftReflection.getCraftPlayerClass().isAssignableFrom(player.getClass())) {
// No - this is not safe
return null;
}
try {
PlayerInjector dummyInjector = getHookInstance(player, PlayerInjectHooks.NETWORK_SERVER_OBJECT);
dummyInjector.initializePlayer(player);
// This probably means the player has disconnected
if (dummyInjector.getSocket() == null) {
return null;
}
inputStreamLookup.setSocketInjector(dummyInjector.getAddress(), dummyInjector);
dummyInjectors.put(player, dummyInjector);
return dummyInjector;
} catch (IllegalAccessException e) {
throw new RuntimeException("Cannot access fields.", e);
}
}
/**
* Retrieve a player injector by looking for its NetworkManager.
* @param networkManager - current network manager.
* @return Related player injector.
*/
PlayerInjector getInjectorByNetworkHandler(Object networkManager) {
// That's not legal
if (networkManager == null)
return null;
// O(n) is okay in this instance. This is only a backup solution.
for (PlayerInjector injector : playerInjection.values()) {
if (injector.getNetworkManager() == networkManager)
return injector;
}
// None found
return null;
}
@Override
public boolean canRecievePackets() {
return false;
}
@Override
public PacketEvent handlePacketRecieved(PacketContainer packet, InputStream input, byte[] buffered) {
throw new UnsupportedOperationException("Proxy injection cannot handle received packets.");
}
/**
* Determine if the given listeners are valid.
* @param listeners - listeners to check.
*/
@Override
public void checkListener(Set<PacketListener> listeners) {
// Make sure the current listeners are compatible
if (getLastSuccessfulHook() != null) {
for (PacketListener listener : listeners) {
checkListener(listener);
}
}
}
/**
* Retrieve the last successful hook.
* <p>
* May be NULL if the hook has been uninjected.
* @return Last successful hook.
*/
private PlayerInjector getLastSuccessfulHook() {
return lastSuccessfulHook != null ? lastSuccessfulHook.get() : null;
}
/**
* Determine if a listener is valid or not.
* <p>
* If not, a warning will be printed to the console.
* @param listener - listener to check.
*/
@Override
public void checkListener(PacketListener listener) {
PlayerInjector last = getLastSuccessfulHook();
if (last != null) {
UnsupportedListener result = last.checkListener(version, listener);
// We won't prevent the listener, as it may still have valid packets
if (result != null) {
reporter.reportWarning(this,
Report.newBuilder(REPORT_UNSUPPPORTED_LISTENER).messageParam(PacketAdapter.getPluginName(listener), result)
);
// These are illegal
for (int packetID : result.getPackets()) {
removePacketHandler(PacketType.findLegacy(packetID, Sender.CLIENT));
removePacketHandler(PacketType.findLegacy(packetID, Sender.SERVER));
}
}
}
}
/**
* Retrieve the current list of registered sending listeners.
* @return List of the sending listeners's packet IDs.
*/
@Override
public Set<PacketType> getSendingFilters() {
return PacketRegistry.toPacketTypes(sendingFilters.toSet(), Sender.SERVER);
}
@Override
public void close() {
// Guard
if (hasClosed || playerInjection == null)
return;
// Remove everything
for (PlayerInjector injection : playerInjection.values()) {
if (injection != null) {
injection.cleanupAll();
}
}
// Remove server handler
if (inputStreamLookup != null)
inputStreamLookup.cleanupAll();
if (serverInjection != null)
serverInjection.cleanupAll();
if (netLoginInjector != null)
netLoginInjector.cleanupAll();
inputStreamLookup = null;
serverInjection = null;
netLoginInjector = null;
hasClosed = true;
playerInjection.clear();
invoker = null;
}
@Override
public Channel getChannel(Player player) {
throw new UnsupportedOperationException();
}
}

370
src/main/java/com/comphenix/protocol/injector/player/ReplacedArrayList.java
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@ -1,370 +0,0 @@
/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.player;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import com.google.common.base.Objects;
import com.google.common.collect.BiMap;
import com.google.common.collect.HashBiMap;
/**
* Represents an array list that wraps another list, while automatically replacing one element with another.
* <p>
* The replaced elements can be recovered.
*
* @author Kristian
* @param <TKey> - type of the elements we're replacing.
*/
class ReplacedArrayList<TKey> extends ArrayList<TKey> {
/**
* Generated by Eclipse.
*/
private static final long serialVersionUID = 1008492765999744804L;
private BiMap<TKey, TKey> replaceMap = HashBiMap.create();
private List<TKey> underlyingList;
public ReplacedArrayList(List<TKey> underlyingList) {
this.underlyingList = underlyingList;
}
/**
* Invoked when a element inserted is replaced.
* @param inserting - the element inserted.
* @param replacement - the element that it should replace.
*/
protected void onReplacing(TKey inserting, TKey replacement) {
// Default is to do nothing.
}
/**
* Invoked when an element is being inserted.
* <p>
* This should be used to add a "replace" map.
* @param inserting - the element to insert.
*/
protected void onInserting(TKey inserting) {
// Default is again nothing
}
/**
* Invoked when an element is being removed.
* @param removing - the element being removed.
*/
protected void onRemoved(TKey removing) {
// Do nothing
}
@Override
public boolean add(TKey element) {
onInserting(element);
if (replaceMap.containsKey(element)) {
TKey replacement = replaceMap.get(element);
onReplacing(element, replacement);
return delegate().add(replacement);
} else {
return delegate().add(element);
}
}
@Override
public void add(int index, TKey element) {
onInserting(element);
if (replaceMap.containsKey(element)) {
TKey replacement = replaceMap.get(element);
onReplacing(element, replacement);
delegate().add(index, replacement);
} else {
delegate().add(index, element);
}
}
@Override
public boolean addAll(Collection<? extends TKey> collection) {
int oldSize = size();
for (TKey element : collection)
add(element);
return size() != oldSize;
}
@Override
public boolean addAll(int index, Collection<? extends TKey> elements) {
int oldSize = size();
for (TKey element : elements)
add(index++, element);
return size() != oldSize;
}
@SuppressWarnings("unchecked")
@Override
public boolean remove(Object object) {
boolean success = delegate().remove(object);
if (success)
onRemoved((TKey) object);
return success;
}
@Override
public TKey remove(int index) {
TKey removed = delegate().remove(index);
if (removed != null)
onRemoved(removed);
return removed;
}
@Override
public boolean removeAll(Collection<?> collection) {
int oldSize = size();
// Use the remove method
for (Object element : collection)
remove(element);
return size() != oldSize;
}
protected List<TKey> delegate() {
return underlyingList;
}
@Override
public void clear() {
for (TKey element : delegate())
onRemoved(element);
delegate().clear();
}
@Override
public boolean contains(Object o) {
return delegate().contains(o);
}
@Override
public boolean containsAll(Collection<?> c) {
return delegate().containsAll(c);
}
@Override
public TKey get(int index) {
return delegate().get(index);
}
@Override
public int indexOf(Object o) {
return delegate().indexOf(o);
}
@Override
public boolean isEmpty() {
return delegate().isEmpty();
}
@Override
public Iterator<TKey> iterator() {
return delegate().iterator();
}
@Override
public int lastIndexOf(Object o) {
return delegate().lastIndexOf(o);
}
@Override
public ListIterator<TKey> listIterator() {
return delegate().listIterator();
}
@Override
public ListIterator<TKey> listIterator(int index) {
return delegate().listIterator(index);
}
@Override
public boolean retainAll(Collection<?> c) {
int oldSize = size();
for (Iterator<TKey> it = delegate().iterator(); it.hasNext(); ) {
TKey current = it.next();
// Remove elements that are not in the list
if (!c.contains(current)) {
it.remove();
onRemoved(current);
}
}
return size() != oldSize;
}
@Override
public TKey set(int index, TKey element) {
// Make sure to replace the element
if (replaceMap.containsKey(element)) {
TKey replacement = replaceMap.get(element);
onReplacing(element, replacement);
return delegate().set(index, replacement);
} else {
return delegate().set(index, element);
}
}
@Override
public int size() {
return delegate().size();
}
@Override
public List<TKey> subList(int fromIndex, int toIndex) {
return delegate().subList(fromIndex, toIndex);
}
@Override
public Object[] toArray() {
return delegate().toArray();
}
@Override
public <T> T[] toArray(T[] a) {
return delegate().toArray(a);
}
/**
* Add a replace rule.
* <p>
* This automatically replaces every existing element.
* @param target - instance to find.
* @param replacement - instance to replace with.
*/
public synchronized void addMapping(TKey target, TKey replacement) {
addMapping(target, replacement, false);
}
/**
* Retrieve the old value, if it exists.
* @param target - the key.
* @return The value that was replaced, or NULL.
*/
public TKey getMapping(TKey target) {
return replaceMap.get(target);
}
/**
* Add a replace rule.
* <p>
* This automatically replaces every existing element.
* @param target - instance to find.
* @param replacement - instance to replace with.
* @param ignoreExisting - whether or not to ignore the existing elements.
*/
public synchronized void addMapping(TKey target, TKey replacement, boolean ignoreExisting) {
replaceMap.put(target, replacement);
// Replace existing elements
if (!ignoreExisting) {
replaceAll(target, replacement);
}
}
/**
* Revert the given mapping.
* @param target - the instance we replaced.
* @return The old mapped value, or NULL if nothing was replaced.
*/
public synchronized TKey removeMapping(TKey target) {
// Make sure the mapping exist
if (replaceMap.containsKey(target)) {
TKey replacement = replaceMap.get(target);
replaceMap.remove(target);
// Revert existing elements
replaceAll(replacement, target);
return replacement;
}
return null;
}
/**
* Swap the new replaced value with its old value.
* @param target - the instance we replaced.
* @param The old mapped value, or NULL if nothing was swapped.
*/
public synchronized TKey swapMapping(TKey target) {
// Make sure the mapping exist
TKey replacement = removeMapping(target);
// Add the reverse
if (replacement != null) {
replaceMap.put(replacement, target);
}
return replacement;
}
/**
* Replace all instances of the given object.
* @param find - object to find.
* @param replace - object to replace it with.
*/
public synchronized void replaceAll(TKey find, TKey replace) {
for (int i = 0; i < underlyingList.size(); i++) {
if (Objects.equal(underlyingList.get(i), find)) {
onReplacing(find, replace);
underlyingList.set(i, replace);
}
}
}
/**
* Undo all replacements.
*/
public synchronized void revertAll() {
// No need to do anything else
if (replaceMap.size() < 1)
return;
BiMap<TKey, TKey> inverse = replaceMap.inverse();
for (int i = 0; i < underlyingList.size(); i++) {
TKey replaced = underlyingList.get(i);
if (inverse.containsKey(replaced)) {
TKey original = inverse.get(replaced);
onReplacing(replaced, original);
underlyingList.set(i, original);
}
}
replaceMap.clear();
}
@Override
protected void finalize() throws Throwable {
revertAll();
super.finalize();
}
}

64
src/main/java/com/comphenix/protocol/injector/player/UnsupportedListener.java
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@ -1,64 +0,0 @@
/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
package com.comphenix.protocol.injector.player;
import java.util.Arrays;
import com.google.common.base.Joiner;
/**
* Represents an error message from a player injector.
*
* @author Kristian
*/
class UnsupportedListener {
private String message;
private int[] packets;
/**
* Create a new error message.
* @param message - the message.
* @param packets - unsupported packets.
*/
public UnsupportedListener(String message, int[] packets) {
super();
this.message = message;
this.packets = packets;
}
/**
* Retrieve the error message.
* @return Error message.
*/
public String getMessage() {
return message;
}
/**
* Retrieve all unsupported packets.
* @return Unsupported packets.
*/
public int[] getPackets() {
return packets;
}
@Override
public String toString() {
return String.format("%s (%s)", message, Joiner.on(", ").join(Arrays.asList(packets)));
}
}

45
src/main/java/com/comphenix/protocol/injector/spigot/DummyPacketInjector.java
View File

@ -1,45 +0,0 @@
package com.comphenix.protocol.injector.spigot;
import java.util.Set;
import org.bukkit.entity.Player;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.concurrency.PacketTypeSet;
import com.comphenix.protocol.events.PacketContainer;
import com.comphenix.protocol.events.PacketEvent;
import com.google.common.collect.Sets;
/**
* Dummy packet injector that simply delegates to its parent Spigot packet injector or receiving filters.
*
* @author Kristian
*/
class DummyPacketInjector extends AbstractPacketInjector {
private SpigotPacketInjector injector;
private PacketTypeSet lastBufferedPackets = new PacketTypeSet();
public DummyPacketInjector(SpigotPacketInjector injector, PacketTypeSet reveivedFilters) {
super(reveivedFilters);
this.injector = injector;
}
@Override
public void inputBuffersChanged(Set<PacketType> set) {
Set<PacketType> removed = Sets.difference(lastBufferedPackets.values(), set);
Set<PacketType> added = Sets.difference(set, lastBufferedPackets.values());
// Update the proxy packet injector
for (PacketType packet : removed) {
injector.getProxyPacketInjector().removePacketHandler(packet);
}
for (PacketType packet : added) {
injector.getProxyPacketInjector().addPacketHandler(packet, null);
}
}
@Override
public PacketEvent packetRecieved(PacketContainer packet, Player client, byte[] buffered) {
return injector.packetReceived(packet, client, buffered);
}
}

92
src/main/java/com/comphenix/protocol/injector/spigot/DummyPlayerHandler.java
View File

@ -1,92 +0,0 @@
package com.comphenix.protocol.injector.spigot;
import io.netty.channel.Channel;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.net.InetSocketAddress;
import org.bukkit.entity.Player;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.concurrency.PacketTypeSet;
import com.comphenix.protocol.events.NetworkMarker;
import com.comphenix.protocol.events.PacketContainer;
import com.comphenix.protocol.events.PacketEvent;
import com.comphenix.protocol.utility.MinecraftProtocolVersion;
/**
* Dummy player handler that simply delegates to its parent Spigot packet injector.
*
* @author Kristian
*/
class DummyPlayerHandler extends AbstractPlayerHandler {
private SpigotPacketInjector injector;
@Override
public int getProtocolVersion(Player player) {
// Just use the server version
return MinecraftProtocolVersion.getCurrentVersion();
}
public DummyPlayerHandler(SpigotPacketInjector injector, PacketTypeSet sendingFilters) {
super(sendingFilters);
this.injector = injector;
}
@Override
public boolean uninjectPlayer(InetSocketAddress address) {
return true;
}
@Override
public boolean uninjectPlayer(Player player) {
injector.uninjectPlayer(player);
return true;
}
@Override
public void sendServerPacket(Player receiver, PacketContainer packet, NetworkMarker marker, boolean filters) throws InvocationTargetException {
injector.sendServerPacket(receiver, packet, marker, filters);
}
@Override
public void recieveClientPacket(Player player, Object mcPacket) throws IllegalAccessException, InvocationTargetException {
injector.processPacket(player, mcPacket);
}
@Override
public void injectPlayer(Player player, ConflictStrategy strategy) {
// We don't care about strategy
injector.injectPlayer(player);
}
@Override
public boolean hasMainThreadListener(PacketType type) {
return sendingFilters.contains(type);
}
@Override
public void handleDisconnect(Player player) {
// Just ignore
}
@Override
public PacketEvent handlePacketRecieved(PacketContainer packet, InputStream input, byte[] buffered) {
// Associate this buffered data
if (buffered != null) {
injector.saveBuffered(packet.getHandle(), buffered);
}
return null;
}
@Override
public void updatePlayer(Player player) {
// Do nothing
}
@Override
public Channel getChannel(Player player) {
throw new UnsupportedOperationException();
}
}

672
src/main/java/com/comphenix/protocol/injector/spigot/SpigotPacketInjector.java
View File

@ -1,672 +0,0 @@
package com.comphenix.protocol.injector.spigot;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentMap;
import net.sf.cglib.proxy.Callback;
import net.sf.cglib.proxy.CallbackFilter;
import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.Factory;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;
import net.sf.cglib.proxy.NoOp;
import org.bukkit.Bukkit;
import org.bukkit.Server;
import org.bukkit.entity.Player;
import org.bukkit.plugin.Plugin;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.PacketType.Sender;
import com.comphenix.protocol.concurrency.PacketTypeSet;
import com.comphenix.protocol.error.DelegatedErrorReporter;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.events.ConnectionSide;
import com.comphenix.protocol.events.NetworkMarker;
import com.comphenix.protocol.events.PacketContainer;
import com.comphenix.protocol.events.PacketEvent;
import com.comphenix.protocol.injector.ListenerInvoker;
import com.comphenix.protocol.injector.PacketFilterManager;
import com.comphenix.protocol.injector.PlayerLoggedOutException;
import com.comphenix.protocol.injector.packet.LegacyNetworkMarker;
import com.comphenix.protocol.injector.packet.PacketInjector;
import com.comphenix.protocol.injector.player.NetworkObjectInjector;
import com.comphenix.protocol.injector.player.PlayerInjectionHandler;
import com.comphenix.protocol.reflect.FieldUtils;
import com.comphenix.protocol.reflect.FuzzyReflection;
import com.comphenix.protocol.reflect.MethodInfo;
import com.comphenix.protocol.reflect.fuzzy.FuzzyMethodContract;
import com.comphenix.protocol.utility.EnhancerFactory;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.google.common.collect.MapMaker;
import com.google.common.collect.Maps;
/**
* Offload all the work to Spigot, if possible.
*
* @author Kristian
*/
public class SpigotPacketInjector implements SpigotPacketListener {
public static final ReportType REPORT_CANNOT_CLEANUP_SPIGOT = new ReportType("Cannot cleanup Spigot listener.");
// Lazily retrieve the spigot listener class
private static volatile Class<?> spigotListenerClass;
private static volatile boolean classChecked;
// Retrieve the entity player from a PlayerConnection
private static volatile Field playerConnectionPlayer;
// Packets that are not to be processed by the filters
private Set<Object> ignoredPackets = Collections.newSetFromMap(new MapMaker().weakKeys().<Object, Boolean>makeMap());
/**
* The amount of ticks to wait before removing all traces of a player.
*/
private static final int CLEANUP_DELAY = 100;
// The listener we will register on Spigot.
// Unfortunately, due to the use of PlayerConnection, INetworkManager and Packet, we're
// unable to reference it directly. But with CGLib, it shouldn't cost us much.
private Object dynamicListener;
// Reference to ProtocolLib
private Plugin plugin;
// Different sending filters
private PacketTypeSet queuedFilters;
private PacketTypeSet reveivedFilters;
// NetworkManager to injector and player
private ConcurrentMap<Object, NetworkObjectInjector> networkManagerInjector = Maps.newConcurrentMap();
// Player to injector
private ConcurrentMap<Player, NetworkObjectInjector> playerInjector = Maps.newConcurrentMap();
// For handling read buffered packet data
private Map<Object, byte[]> readBufferedPackets = new MapMaker().weakKeys().makeMap();
// Responsible for informing the PL packet listeners
private ListenerInvoker invoker;
private ErrorReporter reporter;
private Server server;
// The proxy packet injector
private PacketInjector proxyPacketInjector;
// Background task
private static final int BACKGROUND_DELAY = 30 * PacketFilterManager.TICKS_PER_SECOND;
private int backgroundId;
/**
* Create a new spigot injector.
* @param reporter - error reporter
* @param invoker - listener invoker
* @param server - server
*/
public SpigotPacketInjector(ErrorReporter reporter, ListenerInvoker invoker, Server server) {
this.reporter = reporter;
this.invoker = invoker;
this.server = server;
this.queuedFilters = new PacketTypeSet();
this.reveivedFilters = new PacketTypeSet();
}
/**
* Retrieve the underlying listener invoker.
* @return The invoker.
*/
public ListenerInvoker getInvoker() {
return invoker;
}
/**
* Set the real proxy packet injector.
* @param proxyPacketInjector - the real injector.
*/
public void setProxyPacketInjector(PacketInjector proxyPacketInjector) {
this.proxyPacketInjector = proxyPacketInjector;
}
/**
* Retrieve the real proxy packet injector.
* @return The real injector.
*/
public PacketInjector getProxyPacketInjector() {
return proxyPacketInjector;
}
/**
* Retrieve the spigot packet listener class.
* @return The listener class.
*/
private static Class<?> getSpigotListenerClass() {
if (!classChecked) {
try {
spigotListenerClass = SpigotPacketInjector.class.getClassLoader().loadClass("org.spigotmc.netty.PacketListener");
} catch (ClassNotFoundException e) {
return null;
} finally {
// We've given it a try now
classChecked = true;
}
}
return spigotListenerClass;
}
/**
* Retrieve the register packet listener method.
* @return The method used to register a packet listener.
*/
private static Method getRegisterMethod() {
Class<?> clazz = getSpigotListenerClass();
if (clazz != null) {
try {
return clazz.getMethod("register", clazz, Plugin.class);
} catch (SecurityException e) {
// If this happens, then ... we're doomed
throw new RuntimeException("Reflection is not allowed.", e);
} catch (NoSuchMethodException e) {
throw new IllegalStateException("Cannot find register() method in " + clazz, e);
}
}
// Also bad
throw new IllegalStateException("Spigot could not be found!");
}
/**
* Determine if there is a Spigot packet listener.
* @return Spigot packet listener.
*/
public static boolean canUseSpigotListener() {
return getSpigotListenerClass() != null;
}
/**
* Register the Spigot packet injector.
* @param plugin - the parent plugin.
* @return TRUE if we registered the plugin, FALSE otherwise.
*/
public boolean register(Plugin plugin) {
if (hasRegistered())
return false;
// Save the plugin too
this.plugin = plugin;
final Callback[] callbacks = new Callback[3];
final boolean[] found = new boolean[3];
// Packets received from the clients
callbacks[0] = new MethodInterceptor() {
@Override
public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
return SpigotPacketInjector.this.packetReceived(args[0], args[1], args[2]);
}
};
// Packet sent/queued
callbacks[1] = new MethodInterceptor() {
@Override
public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
return SpigotPacketInjector.this.packetQueued(args[0], args[1], args[2]);
}
};
// Don't care for everything else
callbacks[2] = NoOp.INSTANCE;
Enhancer enhancer = EnhancerFactory.getInstance().createEnhancer();
enhancer.setSuperclass(getSpigotListenerClass());
enhancer.setCallbacks(callbacks);
enhancer.setCallbackFilter(new CallbackFilter() {
@Override
public int accept(Method method) {
// We'll be pretty stringent
if (matchMethod("packetReceived", method)) {
found[0] = true;
return 0;
} else if (matchMethod("packetQueued", method)) {
found[1] = true;
return 1;
} else {
found[2] = true;
return 2;
}
}
});
dynamicListener = enhancer.create();
// Verify methods
if (!found[0])
throw new IllegalStateException("Unable to find a valid packet receiver in Spigot.");
if (!found[1])
throw new IllegalStateException("Unable to find a valid packet queue in Spigot.");
// Lets register it too
try {
getRegisterMethod().invoke(null, dynamicListener, plugin);
} catch (Exception e) {
throw new RuntimeException("Cannot register Spigot packet listener.", e);
}
// Remember to register background task
backgroundId = createBackgroundTask();
// If we succeed
return true;
}
/**
* Create and register a background task.
* @return The background task ID.
*/
private int createBackgroundTask() {
return Bukkit.getScheduler().scheduleSyncRepeatingTask(plugin, new Runnable() {
@Override
public void run() {
cleanupInjectors();
}
}, BACKGROUND_DELAY, BACKGROUND_DELAY);
}
/**
* Ensure that all disconnected injectors are removed from memory.
*/
private void cleanupInjectors() {
for (NetworkObjectInjector injector : networkManagerInjector.values()) {
try {
if (injector.getSocket() != null && injector.getSocket().isClosed()) {
cleanupInjector(injector);
}
} catch (Exception e) {
reporter.reportMinimal(plugin, "cleanupInjectors", e);
// What?
cleanupInjector(injector);
}
}
}
/**
* Remove a given network object injector.
* @param injector - the injector.
*/
private void cleanupInjector(final NetworkObjectInjector injector) {
// Clean up
playerInjector.remove(injector.getPlayer());
playerInjector.remove(injector.getUpdatedPlayer());
networkManagerInjector.remove(injector.getNetworkManager());
}
/**
* Determine if the given method is a valid packet receiver or queued method.
* @param methodName - the expected name of the method.
* @param method - the method we're testing.
* @return TRUE if this is a correct method, FALSE otherwise.
*/
private boolean matchMethod(String methodName, Method method) {
return FuzzyMethodContract.newBuilder().
nameExact(methodName).
parameterCount(3).
parameterSuperOf(MinecraftReflection.getNetHandlerClass(), 1).
parameterSuperOf(MinecraftReflection.getPacketClass(), 2).
returnTypeExact(MinecraftReflection.getPacketClass()).
build().
isMatch(MethodInfo.fromMethod(method), null);
}
/**
* Determine if the Spigot packet listener has been registered.
* @return TRUE if it has, FALSE otherwise.
*/
public boolean hasRegistered() {
return dynamicListener != null;
}
/**
* Retrieve the dummy player injection handler.
* @return Dummy player injection handler.
*/
public PlayerInjectionHandler getPlayerHandler() {
return new DummyPlayerHandler(this, queuedFilters);
}
/**
* Retrieve the dummy packet injection handler.
* @return Dummy packet injection handler.
*/
public PacketInjector getPacketInjector() {
return new DummyPacketInjector(this, reveivedFilters);
}
/**
* Retrieve the currently registered injector for the given player.
* @param player - injected player.
* @param createNew - whether or not to create a new injector if the current is missing.
* @return The injector.
*/
NetworkObjectInjector getInjector(Player player, boolean createNew) {
NetworkObjectInjector injector = playerInjector.get(player);
if (injector == null && createNew) {
// Check for temporary players ..
if ((player instanceof Factory))
throw new IllegalArgumentException("Cannot inject tempoary player " + player);
try {
NetworkObjectInjector created = new NetworkObjectInjector(
filterImpossibleWarnings(reporter), null, invoker, null);
created.initializePlayer(player);
if (created.getNetworkManager() == null)
throw new PlayerLoggedOutException("Player " + player + " has logged out.");
injector = saveInjector(created.getNetworkManager(), created);
} catch (IllegalAccessException e) {
throw new RuntimeException("Cannot create dummy injector.", e);
}
}
return injector;
}
/**
* Retrieve or create a registered injector for the given network manager and connection.
* @param networkManager - a INetworkManager object.
* @param connection - a Connection (PlayerConnection, PendingConnection) object.
* @return The created NetworkObjectInjector with a temporary player.
*/
NetworkObjectInjector getInjector(Object networkManager, Object connection) {
NetworkObjectInjector dummyInjector = networkManagerInjector.get(networkManager);
if (dummyInjector == null) {
// Inject the network manager
try {
NetworkObjectInjector created = new NetworkObjectInjector(
filterImpossibleWarnings(reporter), null, invoker, null);
if (MinecraftReflection.isLoginHandler(connection)) {
created.initialize(connection);
created.setPlayer(created.createTemporaryPlayer(server));
} else if (MinecraftReflection.isServerHandler(connection)) {
// Get the player instead
if (playerConnectionPlayer == null)
playerConnectionPlayer = FuzzyReflection.fromObject(connection).
getFieldByType("player", MinecraftReflection.getEntityPlayerClass());
Object entityPlayer = playerConnectionPlayer.get(connection);
created.initialize(MinecraftReflection.getBukkitEntity(entityPlayer));
} else {
throw new IllegalArgumentException("Unregonized connection in NetworkManager.");
}
dummyInjector = saveInjector(networkManager, created);
} catch (IllegalAccessException e) {
throw new RuntimeException("Cannot create dummy injector.", e);
}
}
return dummyInjector;
}
/**
* Return a delegated error reporter that ignores certain warnings that are irrelevant on Spigot.
* @param reporter - error reporter to delegate.
* @return The filtered error reporter.
*/
private ErrorReporter filterImpossibleWarnings(ErrorReporter reporter) {
return new DelegatedErrorReporter(reporter) {
@Override
protected Report filterReport(Object sender, Report report, boolean detailed) {
// This doesn't matter - ignore it
if (report.getType() == NetworkObjectInjector.REPORT_DETECTED_CUSTOM_SERVER_HANDLER)
return null;
return report;
}
};
}
/**
* Save a given player injector for later.
* @param networkManager - the associated network manager.
* @param created - the created network object creator.
* @return Any other network injector that came before us.
*/
private NetworkObjectInjector saveInjector(Object networkManager, NetworkObjectInjector created) {
// Concurrency - use the same injector!
NetworkObjectInjector result = networkManagerInjector.putIfAbsent(networkManager, created);
if (result == null) {
result = created;
}
// Save the player as well
playerInjector.put(created.getPlayer(), created);
return result;
}
/**
* Save the buffered serialized input packet.
* @param handle - the associated packet.
* @param buffered - the buffere data to save.
*/
public void saveBuffered(Object handle, byte[] buffered) {
readBufferedPackets.put(handle, buffered);
}
@Override
public Object packetReceived(Object networkManager, Object connection, Object packet) {
if (reveivedFilters.contains(packet.getClass())) {
@SuppressWarnings("deprecation")
Integer id = invoker.getPacketID(packet);
// Check for ignored packets
if (ignoredPackets.remove(packet)) {
return packet;
}
Player sender = getInjector(networkManager, connection).getUpdatedPlayer();
PacketType type = PacketType.findLegacy(id, Sender.CLIENT);
PacketContainer container = new PacketContainer(type, packet);
PacketEvent event = packetReceived(container, sender, readBufferedPackets.get(packet));
if (!event.isCancelled())
return event.getPacket().getHandle();
else
return null; // Cancel
}
// Don't change anything
return packet;
}
@Override
public Object packetQueued(Object networkManager, Object connection, Object packet) {
if (queuedFilters.contains(packet.getClass())) {
@SuppressWarnings("deprecation")
Integer id = invoker.getPacketID(packet);
// Check for ignored packets
if (ignoredPackets.remove(packet)) {
return packet;
}
Player reciever = getInjector(networkManager, connection).getUpdatedPlayer();
PacketType type = PacketType.findLegacy(id, Sender.SERVER);
PacketContainer container = new PacketContainer(type, packet);
PacketEvent event = packetQueued(container, reciever);
if (!event.isCancelled())
return event.getPacket().getHandle();
else
return null; // Cancel
}
// Don't change anything
return packet;
}
/**
* Called to inform the event listeners of a queued packet.
* @param packet - the packet that is to be sent.
* @param receiver - the receiver of this packet.
* @return The packet event that was used.
*/
PacketEvent packetQueued(PacketContainer packet, Player receiver) {
PacketEvent event = PacketEvent.fromServer(this, packet, receiver);
invoker.invokePacketSending(event);
return event;
}
/**
* Called to inform the event listeners of a received packet.
* @param packet - the packet that has been receieved.
* @param sender - the client packet.
* @return The packet event that was used.
*/
PacketEvent packetReceived(PacketContainer packet, Player sender, byte[] buffered) {
NetworkMarker marker = buffered != null ? new LegacyNetworkMarker(ConnectionSide.CLIENT_SIDE, buffered, packet.getType()) : null;
PacketEvent event = PacketEvent.fromClient(this, packet, marker, sender);
invoker.invokePacketRecieving(event);
return event;
}
/**
* Called when a player has logged in properly.
* @param player - the player that has logged in.
*/
void injectPlayer(Player player) {
try {
NetworkObjectInjector dummy = new NetworkObjectInjector(
filterImpossibleWarnings(reporter), player, invoker, null);
dummy.initializePlayer(player);
// Save this player for the network manager
NetworkObjectInjector realInjector = networkManagerInjector.get(dummy.getNetworkManager());
if (realInjector != null) {
// Update all future references
realInjector.setUpdatedPlayer(player);
playerInjector.put(player, realInjector);
} else {
// Ah - in that case, save this injector
saveInjector(dummy.getNetworkManager(), dummy);
}
} catch (IllegalAccessException e) {
throw new RuntimeException("Cannot inject " + player);
}
}
/**
* Uninject the given player.
* @param player - the player to uninject.
*/
void uninjectPlayer(Player player) {
final NetworkObjectInjector injector = getInjector(player, false);
if (player != null && injector != null) {
Bukkit.getScheduler().scheduleSyncDelayedTask(plugin, new Runnable() {
@Override
public void run() {
cleanupInjector(injector);
}
}, CLEANUP_DELAY);
}
}
/**
* Invoked when a plugin wants to sent a packet.
* @param receiver - the packet receiver.
* @param packet - the packet to transmit.
* @param marker - the network marker object.
* @param filters - whether or not to invoke the packet listeners.
* @throws InvocationTargetException If anything went wrong.
*/
void sendServerPacket(Player receiver, PacketContainer packet, NetworkMarker marker, boolean filters) throws InvocationTargetException {
NetworkObjectInjector networkObject = getInjector(receiver, true);
// If TRUE, process this packet like any other
if (filters)
ignoredPackets.remove(packet.getHandle());
else
ignoredPackets.add(packet.getHandle());
networkObject.sendServerPacket(packet.getHandle(), marker, filters);
}
/**
* Invoked when a plugin wants to simulate receiving a packet.
* @param player - the supposed sender.
* @param mcPacket - the packet to receieve.
* @throws IllegalAccessException Reflection is not permitted.
* @throws InvocationTargetException Minecraft threw an exception.
*/
void processPacket(Player player, Object mcPacket) throws IllegalAccessException, InvocationTargetException {
NetworkObjectInjector networkObject = getInjector(player, true);
// We will always ignore this packet
ignoredPackets.add(mcPacket);
networkObject.processPacket(mcPacket);
}
@SuppressWarnings({"unchecked", "rawtypes"})
private void cleanupListener() {
Class<?> listenerClass = getSpigotListenerClass();
// Yeah ... there's no easy way to remove the listener
synchronized (listenerClass) {
try {
Field listenersField = FieldUtils.getField(listenerClass, "listeners", true);
Field bakedField = FieldUtils.getField(listenerClass, "baked", true);
Map<Object, Plugin> listenerMap = (Map<Object, Plugin>) listenersField.get(null);
List<Object> listenerArray = Lists.newArrayList((Object[]) bakedField.get(null));
listenerMap.remove(dynamicListener);
listenerArray.remove(dynamicListener);
// Save the array back
bakedField.set(null, Iterables.toArray(listenerArray, (Class)listenerClass));
// Success
dynamicListener = null;
} catch (Exception e) {
reporter.reportWarning(this, Report.newBuilder(REPORT_CANNOT_CLEANUP_SPIGOT).
callerParam(dynamicListener).error(e));
}
}
}
/**
* Invoked when the server is cleaning up.
*/
public void cleanupAll() {
// Cleanup the Spigot listener
if (dynamicListener != null) {
cleanupListener();
}
if (backgroundId >= 0) {
Bukkit.getScheduler().cancelTask(backgroundId);
backgroundId = -1;
}
// Cleanup network marker
if (proxyPacketInjector != null) {
proxyPacketInjector.cleanupAll();
}
}
}

34
src/main/java/com/comphenix/protocol/injector/spigot/SpigotPacketListener.java
View File

@ -1,34 +0,0 @@
package com.comphenix.protocol.injector.spigot;
/**
* Represents a proxy for a Spigot packet listener.
*
* @author Kristian
*/
interface SpigotPacketListener {
/**
* Called when a packet has been received and is about to be handled by the
* current Connection.
* <p>
* The returned packet will be the packet passed on for handling, or in the case of
* null being returned, not handled at all.
*
* @param networkManager - the NetworkManager receiving the packet
* @param connection - the connection which will handle the packet
* @param packet - the received packet
* @return the packet to be handled, or null to cancel
*/
public Object packetReceived(Object networkManager, Object connection, Object packet);
/**
* Called when a packet is queued to be sent.
* <p>
* The returned packet will be the packet sent. In the case of null being returned,
* the packet will not be sent.
* @param networkManager - the NetworkManager which will send the packet
* @param connection - the connection which queued the packet
* @param packet - the queue packet
* @return the packet to be sent, or null if the packet will not be sent.
*/
public Object packetQueued(Object networkManager, Object connection, Object packet);
}

4
src/main/java/com/comphenix/protocol/utility/MinecraftReflection.java
View File

@ -1313,11 +1313,9 @@ public class MinecraftReflection {
}
/**
* Retrieve the WatchableObject class.
* Retrieve the WatchableObject class. Replaced by {@link #getDataWatcherItemClass()}
* @return The WatchableObject class.
* @deprecated Replaced by {@link #getDataWatcherItemClass()}
*/
@Deprecated
public static Class<?> getWatchableObjectClass() {
return getDataWatcherItemClass();
}

12
src/main/java/com/comphenix/protocol/wrappers/WrappedBlockData.java
View File

@ -257,11 +257,9 @@ public abstract class WrappedBlockData extends AbstractWrapper implements Clonab
public abstract Material getType();
/**
* Gets this BlockData's legacy data
* Gets this BlockData's legacy data. Not recommended on 1.13+
* @return The legacy data
* @deprecated By the flattening in 1.13. Fine on lower versions.
*/
@Deprecated
public abstract int getData();
/**
@ -271,20 +269,16 @@ public abstract class WrappedBlockData extends AbstractWrapper implements Clonab
public abstract void setType(Material material);
/**
* Sets this BlockData's legacy data
* Sets this BlockData's legacy data. Not recommended on 1.13+
* @param data The new legacy data
* @deprecated By the flattening in 1.13. Fine on lower versions.
*/
@Deprecated
public abstract void setData(int data);
/**
* Sets this BlockData's type and legacy data
* Sets this BlockData's type and legacy data. Not recommended on 1.13+
* @param material The new Bukkit material
* @param data The new legacy data
* @deprecated By the flattening in 1.13. Fine on lower versions.
*/
@Deprecated
public abstract void setTypeAndData(Material material, int data);
public abstract WrappedBlockData deepClone();

1
src/main/java/com/comphenix/protocol/wrappers/WrappedIntHashMap.java
View File

@ -16,7 +16,6 @@ import com.google.common.base.Preconditions;
* @author Kristian
* @deprecated IntHashMap no longer exists
*/
@Deprecated
public class WrappedIntHashMap extends AbstractWrapper {
private static Method PUT_METHOD;
private static Method GET_METHOD;