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Add support for serializing and deserializing NBT tags in 1.7.2

Dieser Commit ist enthalten in:
Kristian S. Stangeland 2013-12-04 17:48:17 +01:00
Ursprung 65e665aa59
Commit 398b1bc3be
4 geänderte Dateien mit 173 neuen und 39 gelöschten Zeilen

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@ -1,5 +1,7 @@
package com.comphenix.protocol.utility;
import java.util.Map;
/**
* Represents an abstract class loader that can only retrieve classes by their canonical name.
* @author Kristian
@ -26,6 +28,20 @@ abstract class ClassSource {
}
};
}
/**
* Construct a class source from a mapping of canonical names and the corresponding classes.
* @param map - map of class names and classes.
* @return The class source.
*/
public static ClassSource fromMap(final Map<String, Class<?>> map) {
return new ClassSource() {
@Override
public Class<?> loadClass(String canonicalName) throws ClassNotFoundException {
return map.get(canonicalName);
}
};
}
/**
* Retrieve a class by name.

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@ -33,6 +33,8 @@ import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javassist.bytecode.CodeAttribute.RuntimeCopyException;
import javax.annotation.Nonnull;
import net.minecraft.util.io.netty.buffer.ByteBuf;
@ -51,7 +53,9 @@ import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.injector.BukkitUnwrapper;
import com.comphenix.protocol.injector.packet.PacketRegistry;
import com.comphenix.protocol.reflect.ClassAnalyser;
import com.comphenix.protocol.reflect.FuzzyReflection;
import com.comphenix.protocol.reflect.ClassAnalyser.AsmMethod;
import com.comphenix.protocol.reflect.compiler.EmptyClassVisitor;
import com.comphenix.protocol.reflect.compiler.EmptyMethodVisitor;
import com.comphenix.protocol.reflect.fuzzy.AbstractFuzzyMatcher;
@ -107,8 +111,9 @@ public class MinecraftReflection {
private static String MINECRAFT_FULL_PACKAGE = null;
private static String CRAFTBUKKIT_PACKAGE = null;
private static CachedPackage minecraftPackage;
private static CachedPackage craftbukkitPackage;
// Package private for the purpose of unit testing
static CachedPackage minecraftPackage;
static CachedPackage craftbukkitPackage;
// org.bukkit.craftbukkit
private static Constructor<?> craftNMSConstructor;
@ -561,22 +566,35 @@ public class MinecraftReflection {
try {
return getMinecraftClass("Packet");
} catch (RuntimeException e) {
FuzzyClassContract paketContract = null;
// What kind of class we're looking for (sanity check)
FuzzyClassContract paketContract =
FuzzyClassContract.newBuilder().
field(FuzzyFieldContract.newBuilder().
typeDerivedOf(Map.class).
requireModifier(Modifier.STATIC)).
field(FuzzyFieldContract.newBuilder().
typeDerivedOf(Set.class).
requireModifier(Modifier.STATIC)).
if (isUsingNetty()) {
paketContract = FuzzyClassContract.newBuilder().
method(FuzzyMethodContract.newBuilder().
parameterSuperOf(DataInputStream.class).
parameterDerivedOf(ByteBuf.class).
returnTypeVoid()).
build();
method(FuzzyMethodContract.newBuilder().
parameterDerivedOf(ByteBuf.class, 0).
parameterExactType(byte[].class, 1).
returnTypeVoid()).
build();
} else {
paketContract = FuzzyClassContract.newBuilder().
field(FuzzyFieldContract.newBuilder().
typeDerivedOf(Map.class).
requireModifier(Modifier.STATIC)).
field(FuzzyFieldContract.newBuilder().
typeDerivedOf(Set.class).
requireModifier(Modifier.STATIC)).
method(FuzzyMethodContract.newBuilder().
parameterSuperOf(DataInputStream.class).
returnTypeVoid()).
build();
}
// Select a method with one Minecraft object parameter
Method selected = FuzzyReflection.fromClass(getNetHandlerClass()).
Method selected = FuzzyReflection.fromClass(getNetServerHandlerClass()).
getMethod(FuzzyMethodContract.newBuilder().
parameterMatches(paketContract, 0).
parameterCount(1).
@ -715,11 +733,39 @@ public class MinecraftReflection {
try {
return getMinecraftClass("NetServerHandler", "PlayerConnection");
} catch (RuntimeException e) {
// Use the player connection field
return setMinecraftClass("NetServerHandler",
FuzzyReflection.fromClass(getEntityPlayerClass()).
getFieldByType("playerConnection", getNetHandlerClass()).getType()
);
try {
// Use the player connection field
return setMinecraftClass("NetServerHandler",
FuzzyReflection.fromClass(getEntityPlayerClass()).
getFieldByType("playerConnection", getNetHandlerClass()).getType()
);
} catch (RuntimeException e1) {
// Okay, this must be on 1.7.2
Class<?> playerClass = getEntityPlayerClass();
FuzzyClassContract playerConnection = FuzzyClassContract.newBuilder().
field(FuzzyFieldContract.newBuilder().typeExact(playerClass).build()).
constructor(FuzzyMethodContract.newBuilder().
parameterCount(3).
parameterSuperOf(getMinecraftServerClass(), 0).
parameterSuperOf(getEntityPlayerClass(), 2).
build()
).
method(FuzzyMethodContract.newBuilder().
parameterCount(1).
parameterExactType(String.class).
build()
).
build();
// If not, use duck typing
Class<?> fieldType = FuzzyReflection.fromClass(getEntityPlayerClass(), true).getField(
FuzzyFieldContract.newBuilder().typeMatches(playerConnection).build()
).getType();
return setMinecraftClass("NetServerHandler", fieldType);
}
}
}
@ -751,6 +797,7 @@ public class MinecraftReflection {
try {
return getMinecraftClass("NetHandler", "Connection");
} catch (RuntimeException e) {
// Try getting the net login handler
return setMinecraftClass("NetHandler", getNetLoginHandlerClass().getSuperclass());
}
}
@ -948,23 +995,46 @@ public class MinecraftReflection {
try {
return getMinecraftClass("NBTBase");
} catch (RuntimeException e) {
FuzzyClassContract tagCompoundContract = FuzzyClassContract.newBuilder().
constructor(FuzzyMethodContract.newBuilder().
parameterExactType(String.class).
parameterCount(1)).
field(FuzzyFieldContract.newBuilder().
typeDerivedOf(Map.class)).
build();
Class<?> nbtBase = null;
Method selected = FuzzyReflection.fromClass(MinecraftReflection.getPacketClass()).
if (isUsingNetty()) {
FuzzyClassContract tagCompoundContract = FuzzyClassContract.newBuilder().
field(FuzzyFieldContract.newBuilder().
typeDerivedOf(Map.class)).
method(FuzzyMethodContract.newBuilder().
parameterDerivedOf(DataOutput.class).
parameterCount(1)).
build();
Method selected = FuzzyReflection.fromClass(getPacketDataSerializerClass()).
getMethod(FuzzyMethodContract.newBuilder().
banModifier(Modifier.STATIC).
parameterCount(1).
parameterMatches(tagCompoundContract).
returnTypeVoid().
build()
);
nbtBase = selected.getParameterTypes()[0].getSuperclass();
} else {
FuzzyClassContract tagCompoundContract = FuzzyClassContract.newBuilder().
constructor(FuzzyMethodContract.newBuilder().
parameterExactType(String.class).
parameterCount(1)).
field(FuzzyFieldContract.newBuilder().
typeDerivedOf(Map.class)).
build();
Method selected = FuzzyReflection.fromClass(getPacketClass()).
getMethod(FuzzyMethodContract.newBuilder().
requireModifier(Modifier.STATIC).
parameterSuperOf(DataInputStream.class).
parameterCount(1).
returnTypeMatches(tagCompoundContract).
build()
);
Class<?> nbtBase = selected.getReturnType().getSuperclass();
requireModifier(Modifier.STATIC).
parameterSuperOf(DataInputStream.class).
parameterCount(1).
returnTypeMatches(tagCompoundContract).
build()
);
nbtBase = selected.getReturnType().getSuperclass();
}
// That can't be correct
if (nbtBase == null || nbtBase.equals(Object.class)) {
@ -1201,6 +1271,36 @@ public class MinecraftReflection {
}
}
/**
* Retrieve the NBTCompressedStreamTools class.
* @return The NBTCompressedStreamTools class.
*/
public static Class<?> getNbtCompressedStreamToolsClass() {
try {
return getMinecraftClass("NBTCompressedStreamTools");
} catch (RuntimeException e) {
Class<?> packetSerializer = getPacketDataSerializerClass();
// Get the write NBT compound method
Method writeNbt = FuzzyReflection.fromClass(packetSerializer).
getMethodByParameters("writeNbt", getNBTCompoundClass());
try {
// Now -- we inspect all the method calls within that method, and use the first foreign Minecraft class
for (AsmMethod method : ClassAnalyser.getDefault().getMethodCalls(writeNbt)) {
Class<?> owner = MinecraftReflection.class.getClassLoader().loadClass(method.getOwnerClass().replace('/', '.'));
if (!packetSerializer.equals(owner) && isMinecraftClass(owner)) {
return setMinecraftClass("NBTCompressedStreamTools", owner);
}
}
} catch (Exception e1) {
throw new RuntimeException("Unable to analyse class.", e1);
}
throw new IllegalArgumentException("Unable to find NBTCompressedStreamTools.");
}
}
/**
* Retrieve an instance of the packet data serializer wrapper.
* @param buffer - the buffer.

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@ -33,8 +33,9 @@ public class NbtBinarySerializer {
Class<?> base = MinecraftReflection.getNBTBaseClass();
// Use the base class
methodWrite = FuzzyReflection.fromClass(base).
methodWrite = getUtilityClass().
getMethodByParameters("writeNBT", base, DataOutput.class);
methodWrite.setAccessible(true);
}
try {
@ -52,19 +53,37 @@ public class NbtBinarySerializer {
public <TType> NbtWrapper<TType> deserialize(DataInput source) {
if (methodLoad == null) {
Class<?> base = MinecraftReflection.getNBTBaseClass();
Class<?>[] params = MinecraftReflection.isUsingNetty() ?
new Class<?>[] { DataInput.class, int.class } :
new Class<?>[] { DataInput.class };
// Use the base class
methodLoad = FuzzyReflection.fromClass(base).
getMethodByParameters("load", base, new Class<?>[] { DataInput.class });
methodLoad = getUtilityClass().getMethodByParameters("load", base, params);
methodLoad.setAccessible(true);
}
try {
return NbtFactory.fromNMS(methodLoad.invoke(null, source), null);
Object result = null;
// Invoke the correct utility method
if (MinecraftReflection.isUsingNetty())
result = methodLoad.invoke(null, source, 0);
else
result = methodLoad.invoke(null, source);
return NbtFactory.fromNMS(result, null);
} catch (Exception e) {
throw new FieldAccessException("Unable to read NBT from " + source, e);
}
}
private FuzzyReflection getUtilityClass() {
if (MinecraftReflection.isUsingNetty()) {
return FuzzyReflection.fromClass(MinecraftReflection.getNbtCompressedStreamToolsClass(), true);
} else {
return FuzzyReflection.fromClass(MinecraftReflection.getNBTBaseClass(), true);
}
}
/**
* Load an NBT compound from a stream.
* @param source - the input stream.

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@ -56,7 +56,6 @@ import com.comphenix.protocol.wrappers.WrappedWatchableObject;
import com.comphenix.protocol.wrappers.nbt.NbtCompound;
import com.comphenix.protocol.wrappers.nbt.NbtFactory;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
// Ensure that the CraftItemFactory is mockable