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- package me.kcm;
- import java.util.ListIterator;
- import me.kcm.events.*;
- import net.minecraft.launchwrapper.IClassTransformer;
- import net.minecraft.launchwrapper.Launch;
- import org.objectweb.asm.ClassReader;
- import org.objectweb.asm.ClassWriter;
- import org.objectweb.asm.Opcodes;
- import org.objectweb.asm.tree.AbstractInsnNode;
- import org.objectweb.asm.tree.ClassNode;
- import org.objectweb.asm.tree.FieldInsnNode;
- import org.objectweb.asm.tree.FrameNode;
- import org.objectweb.asm.tree.InsnList;
- import org.objectweb.asm.tree.InsnNode;
- import org.objectweb.asm.tree.JumpInsnNode;
- import org.objectweb.asm.tree.LabelNode;
- import org.objectweb.asm.tree.LineNumberNode;
- import org.objectweb.asm.tree.MethodInsnNode;
- import org.objectweb.asm.tree.MethodNode;
- import org.objectweb.asm.tree.VarInsnNode;
- public class KajetansTransformer implements IClassTransformer
- {
- private boolean obfuscated;
-
- public KajetansTransformer()
- {
- Boolean ldev = (Boolean) Launch.blackboard.get("fml.deobfuscatedEnvironment");
- if(ldev == null)
- {
- obfuscated = true;
- }
- else
- {
- obfuscated = !ldev;
- }
- System.out.println(obfuscated);
- }
-
- private void printPatch(String s)
- {
- System.out.println("|‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾");
- System.out.println("| Patching " + s);
- System.out.println("|___________________________________________________");
- }
-
- @Override
- public byte[] transform(String old, String searge, byte[] bytes)
- {
- switch(searge)
- {
- /*case "net.minecraft.entity.EntityLivingBase":
- printPatch(LivingDamageCalculationEvent.class.getSimpleName());
- return patchDamageHook(old, bytes);*/
- case "net.minecraft.entity.player.EntityPlayerMP":
- printPatch(PlayerTabListNameEvent.class.getSimpleName());
- return patchTabList(old, bytes);
- case "net.minecraft.entity.Entity":
- printPatch(FarmlandTrampleEvent.class.getSimpleName());
- return patchEntityCanTrample(old, bytes);
- case "net.minecraft.server.management.PlayerList":
- printPatch("PlayerList");
- return patchPlayerList(old, bytes);
- case "net.minecraft.server.MinecraftServer":
- printPatch("MinecraftServer");
- return patchMinecraftServer(old, bytes);
- case "net.minecraft.network.NetHandlerPlayServer":
- printPatch("NetHandlerPlayServer");
- return patchNetHandlerPlayServer(old, bytes);
- case "net.minecraft.item.crafting.CraftingManager":
- printPatch("CraftingManager");
- return patchCraftingManager(old, bytes);
- }
- return bytes;
- }
-
- /*ListIterator<AbstractInsnNode> list = ins.iterator();
- while(list.hasNext())
- {
- AbstractInsnNode next = list.next();
- System.out.println(getString(next));
- }*/
-
- public byte[] patchDamageHook(String c, byte[] bytes)
- {
- try
- {
- ClassNode classNode = new ClassNode();
- ClassReader classReader = new ClassReader(bytes);
- classReader.accept(classNode, 0);
-
- // EntityLivingBase <--> vp
- // damageEntity <--> func_70665_d <--> d
- MethodNode mn;
- if(obfuscated)
- {
- mn = classNode.methods.stream().filter(me -> me.name.equals("d")).filter(me -> "(Lur;F)V".equals(me.desc)).findAny().get();
- }
- else
- {
- mn = classNode.methods.stream().filter(me -> me.name.equals("damageEntity")).findAny().get();
- }
-
- InsnList ins = mn.instructions;
- ins.insert(ins.get(3), new VarInsnNode(Opcodes.FLOAD, 2));
- if(obfuscated)
- {
- ins.insert(ins.get(4), new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks", "onDamageCalculation", "(Lvp;Lur;F)V", false));
- }
- else
- {
- ins.insert(ins.get(4), new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks",
- "onDamageCalculation", "(Lnet/minecraft/entity/EntityLivingBase;Lnet/minecraft/util/DamageSource;F)V", false));
- }
-
- while(ins.size() > 8)
- {
- ins.remove(ins.get(6));
- }
- ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
- classNode.accept(writer);
- return writer.toByteArray();
- }
- catch(Exception ex)
- {
- ex.printStackTrace();
- }
- return bytes;
- }
-
- public byte[] patchTabList(String c, byte[] bytes)
- {
- try
- {
- ClassNode classNode = new ClassNode();
- ClassReader classReader = new ClassReader(bytes);
- classReader.accept(classNode, 0);
-
- // EntityPlayerMP <--> oq
- // getTabListDisplayName <--> func_175396_E <--> K
- // MD: oq/K ()Lhh; net/minecraft/entity/player/EntityPlayerMP/func_175396_E ()Lnet/minecraft/util/text/ITextComponent;
- MethodNode mn;
- if(obfuscated)
- {
- mn = classNode.methods.stream().filter(me -> me.name.equals("K")).filter(me -> "()Lhh;".equals(me.desc)).findAny().get();
- }
- else
- {
- mn = classNode.methods.stream().filter(me -> me.name.equals("getTabListDisplayName")).findAny().get();
- }
- InsnList ins = mn.instructions;
- ins.remove(ins.get(2));
- ins.insert(ins.get(1), new VarInsnNode(Opcodes.ALOAD, 0));
- if(obfuscated)
- {
- ins.insert(ins.get(2), new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks", "onGetTabListDisplayName", "(Loq;)Lhh;", false));
- }
- else
- {
- ins.insert(ins.get(2), new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks",
- "onGetTabListDisplayName", "(Lnet/minecraft/entity/player/EntityPlayerMP;)Lnet/minecraft/util/text/ITextComponent;", false));
- }
-
- ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
- classNode.accept(writer);
- return writer.toByteArray();
- }
- catch(Exception ex)
- {
- ex.printStackTrace();
- }
- return bytes;
- }
-
- public byte[] patchEntityCanTrample(String c, byte[] bytes)
- {
- try
- {
- ClassNode classNode = new ClassNode();
- ClassReader classReader = new ClassReader(bytes);
- classReader.accept(classNode, 0);
-
- // CL: vg net/minecraft/entity/Entity
- // Entity <--> vg
- // canTrample is forge function
- // Lnet/minecraft/world/World;Lnet/minecraft/block/Block;Lnet/minecraft/util/math/BlockPos;F
- // World <--> amu
- // Block <--> aow
- // BlockPos <--> et
- MethodNode mn = classNode.methods.stream().filter(me -> me.name.equals("canTrample")).findAny().get();
- InsnList ins = mn.instructions;
- int i = ins.size();
- LabelNode label = null;
- int counter = 0;
- while(counter < 3)
- {
- i--;
- if(ins.get(i) instanceof LabelNode)
- {
- counter++;
- label = (LabelNode) ins.get(i);
- }
- }
-
- while(ins.get(i).getOpcode() != Opcodes.IFLE)
- {
- i--;
- }
-
- ins.insert(ins.get(i), new JumpInsnNode(Opcodes.IFEQ, label));
- if(obfuscated)
- {
- ins.insert(ins.get(i), new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks",
- "onEntityCanTrample", "(Lvg;Lamu;Laow;Let;F)Z", false));
- }
- else
- {
- ins.insert(ins.get(i), new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks",
- "onEntityCanTrample", "(Lnet/minecraft/entity/Entity;Lnet/minecraft/world/World;"
- + "Lnet/minecraft/block/Block;Lnet/minecraft/util/math/BlockPos;F)Z", false));
- }
- ins.insert(ins.get(i), new VarInsnNode(Opcodes.FLOAD, 4));
- ins.insert(ins.get(i), new VarInsnNode(Opcodes.ALOAD, 3));
- ins.insert(ins.get(i), new VarInsnNode(Opcodes.ALOAD, 2));
- ins.insert(ins.get(i), new VarInsnNode(Opcodes.ALOAD, 1));
- ins.insert(ins.get(i), new VarInsnNode(Opcodes.ALOAD, 0));
-
- ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
- classNode.accept(writer);
- return writer.toByteArray();
- }
- catch(Exception ex)
- {
- ex.printStackTrace();
- }
- return bytes;
- }
-
- public byte[] patchPlayerList(String c, byte[] bytes)
- {
- try
- {
- ClassNode classNode = new ClassNode();
- ClassReader classReader = new ClassReader(bytes);
- classReader.accept(classNode, 0);
-
- int index = 0;
- AbstractInsnNode node;
- // -----------------------------------------------------------------
- // first part - inserting PlayerConnectionEvent hook
- // -----------------------------------------------------------------
- // EntityPlayerMP <--> oq
- // initializeConnectionToPlayer <--> func_72355_a <--> a
- //MD: pl/a (Lgw;Loq;)V net/minecraft/server/management/PlayerList/func_72355_a
- // (Lnet/minecraft/network/NetworkManager;Lnet/minecraft/entity/player/EntityPlayerMP;)V
- // CL: pa net/minecraft/network/NetHandlerPlayServer
- // public void initializeConnectionToPlayer(NetworkManager netManager, EntityPlayerMP playerIn, NetHandlerPlayServer nethandlerplayserver)
- // its something else: (Lgw;Loq;Lpa;)V
- // it seems forge is already overwriting this method
- MethodNode mn = classNode.methods.stream().filter(me -> me.name.equals("initializeConnectionToPlayer")).findAny().get();
- InsnList ins = mn.instructions;
- // connection <--> field_71135_a <--> a
- // FD: oq/a net/minecraft/entity/player/EntityPlayerMP/field_71135_a
- // searching for line: p.connection = nethandlerplayserver;
- String search = obfuscated ? "a" : "connection";
- String playerOwner = obfuscated ? "oq" : "net/minecraft/entity/player/EntityPlayerMP";
- boolean found = false;
- while(index < ins.size())
- {
- node = ins.get(index);
- if(node instanceof FieldInsnNode)
- {
- FieldInsnNode field = (FieldInsnNode) node;
- if(field.name.equals(search) && field.owner.equals(playerOwner))
- {
- found = true;
- break;
- }
- }
- index++;
- }
-
- if(!found)
- {
- System.out.println("Start of player connection was not found");
- return bytes;
- }
-
- node = ins.get(index);
- if(obfuscated)
- {
- ins.insert(node, new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks", "onPlayerConnection", "(Loq;)V", false));
- }
- else
- {
- ins.insert(node, new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks",
- "onPlayerConnection", "(Lnet/minecraft/entity/player/EntityPlayerMP;)V", false));
- }
- ins.insert(node, new VarInsnNode(Opcodes.ALOAD, 2));
- // -----------------------------------------------------------------
- // end of first part - inserting PlayerConnectionEvent hook
- // second part - removing join message
- // -----------------------------------------------------------------
- // func_70005_c_
- // MD: aed/h_ ()Ljava/lang/String; net/minecraft/entity/player/EntityPlayer/func_70005_c_ ()Ljava/lang/String;
- // Searching for: if (playerIn.getName().equalsIgnoreCase(s))
- String start = "equalsIgnoreCase";
- String startDesc = "(Ljava/lang/String;)Z";
-
- // func_148539_a
- // MD: pl/a (Lhh;)V net/minecraft/server/management/PlayerList/func_148539_a (Lnet/minecraft/util/text/ITextComponent;)V
- String end = obfuscated ? "a" : "sendMessage";
- String endDesc = obfuscated ? "(Lhh;)V" : "(Lnet/minecraft/util/text/ITextComponent;)V";
-
- found = false;
- while(index < ins.size())
- {
- node = ins.get(index);
- if(node instanceof MethodInsnNode)
- {
- MethodInsnNode mnode = (MethodInsnNode) node;
- if(mnode.name.equals(start) && mnode.desc.equals(startDesc))
- {
- found = true;
- break;
- }
- }
- index++;
- }
-
- if(!found)
- {
- System.out.println("Start of player join message was not found");
- return bytes;
- }
-
- // moving to real start of the block "p.getName()..."
- index -= 3;
- while(true)
- {
- node = ins.get(index);
- if(node instanceof MethodInsnNode)
- {
- MethodInsnNode mnode = (MethodInsnNode) node;
- if(mnode.name.equals(end) && mnode.desc.equals(endDesc))
- {
- ins.remove(node);
- break;
- }
- }
- ins.remove(node);
- }
-
- // -----------------------------------------------------------------
- // end of second part - removing join message
- // third part - inserting PlayerPreRespawnEvent hook
- // -----------------------------------------------------------------
- // recreatePlayerEntity <--> func_72368_a <--> a
- // MD: pl/a (Loq;IZ)Loq; net/minecraft/server/management/PlayerList/func_72368_a
- // (Lnet/minecraft/entity/player/EntityPlayerMP;IZ)Lnet/minecraft/entity/player/EntityPlayerMP;
- if(obfuscated)
- {
- mn = classNode.methods.stream().filter(me -> me.name.equals("a")).filter(me -> "(Loq;IZ)Loq;".equals(me.desc)).findAny().get();
- }
- else
- {
- mn = classNode.methods.stream().filter(me -> me.name.equals("recreatePlayerEntity")).findAny().get();
- }
- ins = mn.instructions;
- node = ins.get(1);
- if(obfuscated)
- {
- ins.insert(node, new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks", "onPlayerPreRespawn", "(Loq;IZ)V", false));
- }
- else
- {
- ins.insert(node, new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks",
- "onPlayerPreRespawn", "(Lnet/minecraft/entity/player/EntityPlayerMP;IZ)V", false));
- }
- ins.insert(node, new VarInsnNode(Opcodes.ILOAD, 3));
- ins.insert(node, new VarInsnNode(Opcodes.ILOAD, 2));
- ins.insert(node, new VarInsnNode(Opcodes.ALOAD, 1));
-
- // -----------------------------------------------------------------
- // end of third part - inserting PlayerPreRespawnEvent hook
- // -----------------------------------------------------------------
-
- ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
- classNode.accept(writer);
- return writer.toByteArray();
- }
- catch(Exception ex)
- {
- ex.printStackTrace();
- }
- return bytes;
- }
-
- public byte[] patchMinecraftServer(String c, byte[] bytes)
- {
- try
- {
- ClassNode classNode = new ClassNode();
- ClassReader classReader = new ClassReader(bytes);
- classReader.accept(classNode, 0);
-
- // createCommandManager <--> func_175582_h <--> i
- // MD: net/minecraft/server/MinecraftServer/i ()Ldh;
- // MD: chd/i ()Ldh; net/minecraft/server/integrated/IntegratedServer/func_175582_h
- // ()Lnet/minecraft/command/ServerCommandManager;
- MethodNode mn;
- if(obfuscated)
- {
- mn = classNode.methods.stream().filter(me -> me.name.equals("i")).filter(me -> "()Ldh;".equals(me.desc)).findAny().get();
- }
- else
- {
- mn = classNode.methods.stream().filter(me -> me.name.equals("createCommandManager")).findAny().get();
- }
-
- InsnList ins = mn.instructions;
-
- ins.remove(ins.get(2));
- ins.remove(ins.get(2));
- ins.remove(ins.get(3));
- /*if(obfuscated)
- {
- ins.insert(ins.get(2), new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks",
- "onCreateCommandManager", "(Ldh;)Lme/kcm/command/ModServerCommandManager;", false));
- }
- else
- {*/
- ins.insert(ins.get(2), new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks",
- "onCreateCommandManager", "(Lnet/minecraft/server/MinecraftServer;)Lme/kcm/command/ModServerCommandManager;", false));
- //}
-
- ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
- classNode.accept(writer);
- return writer.toByteArray();
- }
- catch(Exception ex)
- {
- ex.printStackTrace();
- }
- return bytes;
- }
-
- public byte[] patchNetHandlerPlayServer(String c, byte[] bytes)
- {
- try
- {
- ClassNode classNode = new ClassNode();
- ClassReader classReader = new ClassReader(bytes);
- classReader.accept(classNode, 0);
-
- // public void onDisconnect(ITextComponent reason)
- // onDisconnect <--> func_147231_a <--> a
- // MD: pa/a (Lhh;)V net/minecraft/network/NetHandlerPlayServer/func_147231_a (Lnet/minecraft/util/text/ITextComponent;)V
- MethodNode mn;
- if(obfuscated)
- {
- mn = classNode.methods.stream().filter(me -> me.name.equals("a")).filter(me -> "(Lhh;)V".equals(me.desc)).findAny().get();
- }
- else
- {
- mn = classNode.methods.stream().filter(me -> me.name.equals("onDisconnect")).findAny().get();
- }
-
- InsnList ins = mn.instructions;
-
- // VarInsnNode 25 2 0
- // FieldInsnNode 180 4 Lnet/minecraft/server/MinecraftServer; serverController net/minecraft/network/NetHandlerPlayServer
- // MethodInsnNode 182 5 ()Lnet/minecraft/server/management/PlayerList; false getPlayerList net/minecraft/server/MinecraftServer
- // VarInsnNode 25 2 2
- // MethodInsnNode 182 5 (Lnet/minecraft/util/text/ITextComponent;)V false sendMessage net/minecraft/server/management/PlayerList
-
- // sendMessage <--> func_148539_a <--> a
- // MD: pl/a (Lhh;)V net/minecraft/server/management/PlayerList/func_148539_a (Lnet/minecraft/util/text/ITextComponent;)V
-
- int index = 0;
- AbstractInsnNode node;
- String search = obfuscated ? "a" : "sendMessage";
- String owner = obfuscated ? "pl" : "net/minecraft/server/management/PlayerList";
- boolean found = false;
- while(index < ins.size())
- {
- node = ins.get(index);
- if(node instanceof MethodInsnNode)
- {
- MethodInsnNode field = (MethodInsnNode) node;
- if(field.name.equals(search) && field.owner.equals(owner))
- {
- found = true;
- break;
- }
- }
- index++;
- }
-
- if(!found)
- {
- System.out.println("Start of sendMessage was not found");
- return bytes;
- }
-
- index -= 4;
-
- for(int i = 0; i < 5; i++)
- {
- ins.remove(ins.get(index));
- }
-
- ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
- classNode.accept(writer);
- return writer.toByteArray();
- }
- catch(Exception ex)
- {
- ex.printStackTrace();
- }
- return bytes;
- }
-
- public byte[] patchCraftingManager(String c, byte[] bytes)
- {
- try
- {
- ClassNode classNode = new ClassNode();
- ClassReader classReader = new ClassReader(bytes);
- classReader.accept(classNode, 0);
-
- MethodNode mn;
- if(obfuscated)
- {
- mn = classNode.methods.stream().filter(me -> me.name.equals("b")).filter(me -> "(Lafy;Lamu;)Lakt;".equals(me.desc)).findAny().get();
- }
- else
- {
- mn = classNode.methods.stream().filter(me -> me.name.equals("findMatchingRecipe")).findAny().get();
- }
-
- InsnList ins = mn.instructions;
- // sendMessage <--> func_148539_a <--> a
- // MD: aku/b (Lafy;Lamu;)Lakt; net/minecraft/item/crafting/CraftingManager/func_192413_b
- // (Lnet/minecraft/inventory/InventoryCrafting;Lnet/minecraft/world/World;)Lnet/minecraft/item/crafting/IRecipe;
-
- AbstractInsnNode node = ins.get(1);
- ins.insert(node, new InsnNode(Opcodes.ARETURN));
- if(obfuscated)
- {
- ins.insert(node, new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks", "onfindMatchingRecipe", "(Lafy;Lamu;)Lakt;", false));
- }
- else
- {
- ins.insert(node, new MethodInsnNode(Opcodes.INVOKESTATIC, "me/kcm/events/Hooks", "onfindMatchingRecipe",
- "(Lnet/minecraft/inventory/InventoryCrafting;Lnet/minecraft/world/World;)Lnet/minecraft/item/crafting/IRecipe;", false));
- }
- ins.insert(node, new VarInsnNode(Opcodes.ALOAD, 1));
- ins.insert(node, new VarInsnNode(Opcodes.ALOAD, 0));
-
- ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
- classNode.accept(writer);
- return writer.toByteArray();
- }
- catch(Exception ex)
- {
- ex.printStackTrace();
- }
- return bytes;
- }
-
- public String getString(AbstractInsnNode node)
- {
- StringBuilder sb = new StringBuilder();
- sb.append(node.getClass().getSimpleName());
- sb.append(" ");
- sb.append(node.getOpcode());
- sb.append(" ");
- sb.append(node.getType());
- sb.append(" ");
- if(node instanceof LineNumberNode)
- {
- LineNumberNode n = (LineNumberNode) node;
- sb.append(n.line);
- sb.append(" ");
- sb.append(n.start);
- }
- else if(node instanceof VarInsnNode)
- {
- VarInsnNode n = (VarInsnNode) node;
- sb.append(n.var);
- }
- else if(node instanceof MethodInsnNode)
- {
- MethodInsnNode n = (MethodInsnNode) node;
- sb.append(n.desc);
- sb.append(" ");
- sb.append(n.itf);
- sb.append(" ");
- sb.append(n.name);
- sb.append(" ");
- sb.append(n.owner);
- }
- else if(node instanceof FrameNode)
- {
- FrameNode n = (FrameNode) node;
- if(n.local != null)
- {
- n.local.forEach(s -> {sb.append(s); sb.append(" ");});
- }
- if(n.stack != null)
- {
- n.stack.forEach(s -> {sb.append(s); sb.append(" ");});
- }
- }
- else if(node instanceof InsnNode)
- {
- }
- else if(node instanceof FieldInsnNode)
- {
- FieldInsnNode n = (FieldInsnNode) node;
- sb.append(n.desc);
- sb.append(" ");
- sb.append(n.name);
- sb.append(" ");
- sb.append(n.owner);
- }
- return sb.toString();
- }
- }
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