List of usage examples for org.objectweb.asm.tree ClassNode accept
public void accept(final ClassVisitor classVisitor)
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformWorld(byte[] bytes) { /*try/*w w w . ja v a 2 s . com*/ { FileOutputStream fos = new FileOutputStream("d:/World.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching World.class ..................."); boolean ok = false, ok2 = false; ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); MethodNode m; Iterator<MethodNode> methods = classNode.methods.iterator(); while (methods.hasNext()) { m = methods.next(); if (m.name.equals("<init>")) { for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new TypeInsnNode(NEW, "blockphysics/BTickList")); toInject.add(new InsnNode(DUP)); toInject.add(new MethodInsnNode(INVOKESPECIAL, "blockphysics/BTickList", "<init>", "()V")); toInject.add( new FieldInsnNode(PUTFIELD, "abv", "moveTickList", "Lblockphysics/BTickList;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new TypeInsnNode(NEW, "java/util/HashSet")); toInject.add(new InsnNode(DUP)); toInject.add(new MethodInsnNode(INVOKESPECIAL, "java/util/HashSet", "<init>", "()V")); toInject.add(new FieldInsnNode(PUTFIELD, "abv", "pistonMoveBlocks", "Ljava/util/HashSet;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new TypeInsnNode(NEW, "blockphysics/ExplosionQueue")); toInject.add(new InsnNode(DUP)); toInject.add( new MethodInsnNode(INVOKESPECIAL, "blockphysics/ExplosionQueue", "<init>", "()V")); toInject.add(new FieldInsnNode(PUTFIELD, "abv", "explosionQueue", "Lblockphysics/ExplosionQueue;")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok = true; } } } else if (m.name.equals("a") && m.desc.equals("(Lnm;DDDFZZ)Labq;")) ; { for (int index = m.instructions.size() - 1; index > 0; index--) { if (m.instructions.get(index).getOpcode() == INVOKEVIRTUAL && m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && ((MethodInsnNode) m.instructions.get(index)).owner.equals("abq") && ((MethodInsnNode) m.instructions.get(index)).name.equals("a") && ((MethodInsnNode) m.instructions.get(index)).desc.equals("(Z)V")) { while (!(m.instructions.get(index).getOpcode() == INVOKEVIRTUAL && m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && ((MethodInsnNode) m.instructions.get(index)).owner.equals("abq") && ((MethodInsnNode) m.instructions.get(index)).name.equals("a") && ((MethodInsnNode) m.instructions.get(index)).desc.equals("()V"))) { m.instructions.remove(m.instructions.get(index)); index--; } m.instructions.remove(m.instructions.get(index - 1)); m.instructions.remove(m.instructions.get(index - 1)); InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "abv", "explosionQueue", "Lblockphysics/ExplosionQueue;")); toInject.add(new VarInsnNode(ALOAD, 11)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "blockphysics/ExplosionQueue", "add", "(Labq;)V")); m.instructions.insertBefore(m.instructions.get(index - 1), toInject); ok2 = true; break; } } } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); FieldVisitor fv; fv = cw.visitField(ACC_PUBLIC, "moveTickList", "Lblockphysics/BTickList;", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "pistonMoveBlocks", "Ljava/util/HashSet;", "Ljava/util/HashSet<Ljava/lang/String;>;", null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "explosionQueue", "Lblockphysics/ExplosionQueue;", null, null); fv.visitEnd(); cw.visitEnd(); if (ok && ok2) System.out.println("OK"); else System.out.println("Failed." + ok + ok2); /*try { FileOutputStream fos = new FileOutputStream("d:/World.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformWorldServer(byte[] bytes) { /*try//from w w w . j av a 2 s .c o m { FileOutputStream fos = new FileOutputStream("d:/WorldServer.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ boolean ok = false, ok2 = false; boolean bukkit = false; try { Class.forName("org.bukkit.Bukkit"); System.out.println("[BlockPhysics] Bukkit detected."); bukkit = true; ok2 = true; } catch (ClassNotFoundException e) { } System.out.print("[BlockPhysics] Patching WorldServer.class ............."); ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); MethodNode m; Iterator<MethodNode> methods = classNode.methods.iterator(); while (methods.hasNext()) { m = methods.next(); if (m.name.equals("b") && m.desc.equals("()V")) { for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "tickBlocksRandomMove", "(Ljr;)V")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "jr", "moveTickList", "Lblockphysics/BTickList;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "blockphysics/BTickList", "tickMoveUpdates", "(Labv;)V")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "jr", "pistonMoveBlocks", "Ljava/util/HashSet;")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "java/util/HashSet", "clear", "()V")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "jr", "explosionQueue", "Lblockphysics/ExplosionQueue;")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "blockphysics/ExplosionQueue", "doNextExplosion", "()V")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok = true; break; } } } else if (!bukkit && m.name.equals("a") && m.desc.equals("(Lnm;DDDFZZ)Labq;")) ; { for (int index = m.instructions.size() - 1; index > 0; index--) { if (m.instructions.get(index).getOpcode() == INVOKEVIRTUAL && m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && ((MethodInsnNode) m.instructions.get(index)).owner.equals("abq") && ((MethodInsnNode) m.instructions.get(index)).name.equals("a") && ((MethodInsnNode) m.instructions.get(index)).desc.equals("(Z)V")) { while (!(m.instructions.get(index).getOpcode() == INVOKEVIRTUAL && m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && ((MethodInsnNode) m.instructions.get(index)).owner.equals("abq") && ((MethodInsnNode) m.instructions.get(index)).name.equals("a") && ((MethodInsnNode) m.instructions.get(index)).desc.equals("()V"))) { m.instructions.remove(m.instructions.get(index)); index--; } m.instructions.remove(m.instructions.get(index - 1)); m.instructions.remove(m.instructions.get(index - 1)); InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "jr", "explosionQueue", "Lblockphysics/ExplosionQueue;")); toInject.add(new VarInsnNode(ALOAD, 11)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "blockphysics/ExplosionQueue", "add", "(Labq;)V")); m.instructions.insertBefore(m.instructions.get(index - 1), toInject); ok2 = true; break; } } } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); if (ok && ok2) System.out.println("OK"); else System.out.println("Failed." + ok + ok2); /*try { FileOutputStream fos = new FileOutputStream("d:/WorldServer.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformExplosion(byte[] bytes) { /*try/*from ww w.j av a 2 s . c o m*/ { FileOutputStream fos = new FileOutputStream("d:/Explosion.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching Explosion.class ..............."); boolean ok = false, ok2 = false, ok3 = false; ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); MethodNode m; Iterator<MethodNode> methods = classNode.methods.iterator(); while (methods.hasNext()) { m = methods.next(); if ((m.name.equals("<init>") && m.desc.equals("(Labv;Lnm;DDDF)V"))) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "abq", "impact", "Z")); for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { m.instructions.insertBefore(m.instructions.get(index), toInject); ok = true; break; } } } else if ((m.name.equals("a") && m.desc.equals("()V"))) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "abq", "k", "Labv;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "doExplosionA", "(Labv;Labq;)V")); toInject.add(new InsnNode(RETURN)); m.instructions.clear(); m.localVariables.clear(); m.instructions.add(toInject); ok2 = true; } else if (m.name.equals("a") && m.desc.equals("(Z)V")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "abq", "k", "Labv;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ILOAD, 1)); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "doExplosionB", "(Labv;Labq;Z)V")); toInject.add(new InsnNode(RETURN)); m.instructions.clear(); m.localVariables.clear(); m.instructions.add(toInject); ok3 = true; } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); FieldVisitor fv; fv = cw.visitField(ACC_PUBLIC, "impact", "Z", null, null); fv.visitEnd(); cw.visitEnd(); if (ok && ok2 && ok3) System.out.println("OK"); else System.out.println("Failed." + ok + ok2 + ok3); /*try { FileOutputStream fos = new FileOutputStream("d:/Explosion.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformMinecraftServer(byte[] bytes) { /*try// w ww.j a v a2s .c om { FileOutputStream fos = new FileOutputStream("d:/MinecraftServer.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ boolean bukkit = false; try { Class.forName("org.bukkit.Bukkit"); System.out.println("[BlockPhysics] Bukkit detected."); bukkit = true; } catch (ClassNotFoundException e) { } System.out.print("[BlockPhysics] Patching MinecraftServer.class ........."); boolean ok = false; boolean ok2 = false; ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); MethodNode m; Iterator<MethodNode> methods = classNode.methods.iterator(); while (methods.hasNext()) { m = methods.next(); if (m.name.equals("run") && m.desc.equals("()V")) { if (bukkit) { int index; for (index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && m.instructions.get(index).getOpcode() == INVOKESTATIC && ((MethodInsnNode) m.instructions.get(index)).owner.equals("java/lang/System") && ((MethodInsnNode) m.instructions.get(index)).name.equals("nanoTime")) { ok = true; break; } } if (ok) { while (index < m.instructions.size()) { if (m.instructions.get(index).getOpcode() == LSUB) { InsnList toInject = new InsnList(); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "setSkipMoveM", "(J)J")); m.instructions.insert(m.instructions.get(index), toInject); ok2 = true; break; } index++; } } } else { int index; for (index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && m.instructions.get(index).getOpcode() == INVOKEVIRTUAL && ((MethodInsnNode) m.instructions.get(index)).owner .equals("net/minecraft/server/MinecraftServer") && ((MethodInsnNode) m.instructions.get(index)).name.equals("s")) { ok = true; break; } } if (ok) { while (index > 0) { if (m.instructions.get(index).getOpcode() == LLOAD && m.instructions.get(index).getType() == AbstractInsnNode.VAR_INSN && ((VarInsnNode) m.instructions.get(index)).var == 3) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(LLOAD, 7)); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "setSkipMove", "(J)V")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok2 = true; break; } index--; } } } } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); if (ok && ok2) System.out.println("OK"); else System.out.println("Failed." + ok + ok2); /*try { FileOutputStream fos = new FileOutputStream("d:/MinecraftServer.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformEntityTrackerEntry(byte[] bytes) { /*try//from w ww. ja va 2s.c o m { FileOutputStream fos = new FileOutputStream("d:/EntityTrackerEntry.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching EntityTrackerEntry.class ......"); boolean ok = false; ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); MethodNode m; Iterator<MethodNode> methods = classNode.methods.iterator(); while (methods.hasNext()) { m = methods.next(); if (m.name.equals("c") && m.desc.equals("()Lex;")) { for (int index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getType() == AbstractInsnNode.TYPE_INSN && m.instructions.get(index).getOpcode() == INSTANCEOF && ((TypeInsnNode) m.instructions.get(index)).desc.equals("sq")) { while (m.instructions.get(index).getOpcode() != IFEQ) { index++; } index++; while (m.instructions.get(index).getOpcode() != ARETURN) { m.instructions.remove(m.instructions.get(index)); } InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "jw", "a", "Lnm;")); toInject.add(new TypeInsnNode(CHECKCAST, "sq")); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "spawnFallingSandPacket", "(Lsq;)Ldc;")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok = true; break; } } } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); if (ok) System.out.println("OK"); else System.out.println("Failed." + ok); /*try { FileOutputStream fos = new FileOutputStream("d:/EntityTrackerEntry.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformEntityTracker(byte[] bytes) { /*try/*from www . ja v a 2 s . c o m*/ { FileOutputStream fos = new FileOutputStream("d:/EntityTracker.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching EntityTracker.class ..........."); boolean ok = false; boolean ok2 = false; boolean ok3 = false; boolean ok4 = false; ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); MethodNode m; Iterator<MethodNode> methods = classNode.methods.iterator(); while (methods.hasNext()) { m = methods.next(); if (m.name.equals("<init>") && m.desc.equals("(Ljr;)V")) { for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "jl", "movingblocks", "I")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok = true; break; } } } else if (m.name.equals("a") && m.desc.equals("(Lnm;)V")) { for (int index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getType() == AbstractInsnNode.TYPE_INSN && m.instructions.get(index).getOpcode() == INSTANCEOF && ((TypeInsnNode) m.instructions.get(index)).desc.equals("tb")) { m.instructions.remove(m.instructions.get(index - 1)); while (m.instructions.get(index).getType() != AbstractInsnNode.TYPE_INSN || m.instructions.get(index).getOpcode() != INSTANCEOF) { m.instructions.remove(m.instructions.get(index - 1)); ok2 = true; } break; } } for (int index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getType() == AbstractInsnNode.TYPE_INSN && m.instructions.get(index).getOpcode() == INSTANCEOF && ((TypeInsnNode) m.instructions.get(index)).desc.equals("sq")) { while (m.instructions.get(index).getOpcode() != GOTO) { index++; if (m.instructions.get(index).getType() == AbstractInsnNode.INT_INSN && m.instructions.get(index).getOpcode() == BIPUSH && ((IntInsnNode) m.instructions.get(index)).operand == 20) { m.instructions.set(m.instructions.get(index), new IntInsnNode(BIPUSH, 40)); ok3 = true; } } InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DUP)); toInject.add(new FieldInsnNode(GETFIELD, "jl", "movingblocks", "I")); toInject.add(new InsnNode(ICONST_1)); toInject.add(new InsnNode(IADD)); toInject.add(new FieldInsnNode(PUTFIELD, "jl", "movingblocks", "I")); m.instructions.insertBefore(m.instructions.get(index), toInject); break; } } } else if (m.name.equals("b") && m.desc.equals("(Lnm;)V")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new TypeInsnNode(INSTANCEOF, "sq")); LabelNode l3 = new LabelNode(); toInject.add(new JumpInsnNode(IFEQ, l3)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DUP)); toInject.add(new FieldInsnNode(GETFIELD, "jl", "movingblocks", "I")); toInject.add(new InsnNode(ICONST_1)); toInject.add(new InsnNode(ISUB)); toInject.add(new FieldInsnNode(PUTFIELD, "jl", "movingblocks", "I")); toInject.add(l3); for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { m.instructions.insertBefore(m.instructions.get(index), toInject); ok4 = true; break; } } } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); FieldVisitor fv; fv = cw.visitField(ACC_PUBLIC, "movingblocks", "I", null, null); fv.visitEnd(); cw.visitEnd(); if (ok && ok2 && ok3 && ok4) System.out.println("OK"); else System.out.println("Failed." + ok + ok2 + ok3 + ok4); /*try { FileOutputStream fos = new FileOutputStream("d:/EntityTracker.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformEntityTNTPrimed(byte[] bytes) { /*try/*from w w w . j a va 2 s .c om*/ { FileOutputStream fos = new FileOutputStream("d:/EntityTNTPrimed.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ boolean bukkit = false; try { Class.forName("org.bukkit.Bukkit"); System.out.println("[BlockPhysics] Bukkit detected."); bukkit = true; } catch (ClassNotFoundException e) { } System.out.print("[BlockPhysics] Patching EntityTNTPrimed.class ........."); boolean ok = false, ok2 = false, ok5 = false, ok6 = false, ok7 = false, ok8 = false, ok9 = false, ok10 = false; ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); classNode.superName = "sq"; MethodNode m; Iterator<MethodNode> methods = classNode.methods.iterator(); while (methods.hasNext()) { m = methods.next(); if (m.name.equals("<init>") && m.desc.equals("(Labv;)V")) { for (int index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getOpcode() == INVOKESPECIAL && m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && ((MethodInsnNode) m.instructions.get(index)).owner.equals("nm") && ((MethodInsnNode) m.instructions.get(index)).name.equals("<init>") && ((MethodInsnNode) m.instructions.get(index)).desc.equals("(Labv;)V")) { m.instructions.set(m.instructions.get(index), new MethodInsnNode(INVOKESPECIAL, "sq", "<init>", "(Labv;)V")); ok = true; break; } } } else if (m.name.equals("<init>") && m.desc.equals("(Labv;DDDLoe;)V")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new VarInsnNode(DLOAD, 2)); toInject.add(new VarInsnNode(DLOAD, 4)); toInject.add(new VarInsnNode(DLOAD, 6)); toInject.add(new IntInsnNode(BIPUSH, 46)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new MethodInsnNode(INVOKESPECIAL, "sq", "<init>", "(Labv;DDDII)V")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new IntInsnNode(BIPUSH, 80)); toInject.add(new FieldInsnNode(PUTFIELD, "tb", "a", "I")); if (bukkit) { toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new LdcInsnNode(new Float("4.0"))); toInject.add(new FieldInsnNode(PUTFIELD, "tb", "yield", "F")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "tb", "isIncendiary", "Z")); } toInject.add(new InsnNode(RETURN)); m.instructions.clear(); m.localVariables.clear(); m.instructions.add(toInject); ok2 = true; } else if (m.name.equals("K") && m.desc.equals("()Z")) { InsnList toInject = new InsnList(); toInject.add(new InsnNode(ICONST_0)); toInject.add(new InsnNode(IRETURN)); m.instructions.clear(); m.localVariables.clear(); m.instructions.add(toInject); ok5 = true; } else if (m.name.equals("l_") && m.desc.equals("()V")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "tb", "q", "Labv;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "fallingSandUpdate", "(Labv;Lsq;)V")); toInject.add(new InsnNode(RETURN)); m.instructions.clear(); m.localVariables.clear(); m.instructions.add(toInject); ok6 = true; } else if (m.name.equals("b") && m.desc.equals("(Lbx;)V")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new MethodInsnNode(INVOKESPECIAL, "sq", "b", "(Lbx;)V")); for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { m.instructions.insertBefore(m.instructions.get(index), toInject); ok7 = true; break; } } } else if (m.name.equals("a") && m.desc.equals("(Lbx;)V")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new MethodInsnNode(INVOKESPECIAL, "sq", "a", "(Lbx;)V")); for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { m.instructions.insertBefore(m.instructions.get(index), toInject); ok8 = true; break; } } } else if (m.name.equals("d") && m.desc.equals("()V")) { m.access = ACC_PUBLIC; ok9 = true; if (bukkit) { for (int index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getOpcode() == INVOKESTATIC && m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && ((MethodInsnNode) m.instructions.get(index)).owner.contains("entity/CraftEntity") && ((MethodInsnNode) m.instructions.get(index)).name.equals("getEntity")) { String pclass = ((MethodInsnNode) m.instructions.get(index)).owner .replace("entity/CraftEntity", ""); m.instructions.set(m.instructions.get(index), new MethodInsnNode(INVOKESPECIAL, pclass + "entity/CraftTNTPrimed", "<init>", "(L" + pclass + "CraftServer;Ltb;)V")); InsnList toInject = new InsnList(); toInject.add(new TypeInsnNode(NEW, pclass + "entity/CraftTNTPrimed")); toInject.add(new InsnNode(DUP)); m.instructions.insert(m.instructions.get(index - 3), toInject); ok10 = true; break; } } } else { for (int index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getOpcode() == ACONST_NULL) { m.instructions.set(m.instructions.get(index), new VarInsnNode(ALOAD, 0)); ok10 = true; break; } } } } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); if (ok && ok2 && ok5 && ok6 && ok7 && ok8 && ok9) System.out.println("OK"); else System.out.println("Failed." + ok + ok2 + ok5 + ok6 + ok7 + ok8 + ok9); /*try { FileOutputStream fos = new FileOutputStream("d:/EntityTNTPrimed.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformEntityFallingSand(byte[] bytes) { /*try//from w ww .ja v a2 s. c o m { FileOutputStream fos = new FileOutputStream("d:/EntityFallingSand.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching EntityFallingSand.class ......."); boolean ok = false; boolean ok2 = false; boolean ok3 = false; boolean ok4 = false; boolean ok5 = false; boolean ok6 = false; boolean ok7 = false; boolean ok8 = false; boolean ok9 = false, ok10 = false; ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); MethodNode m; Iterator<MethodNode> methods = classNode.methods.iterator(); while (methods.hasNext()) { m = methods.next(); if (m.name.equals("<init>") && m.desc.equals("(Labv;)V")) { for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_1)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "m", "Z")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new LdcInsnNode(new Float("0.996"))); toInject.add(new LdcInsnNode(new Float("0.996"))); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "sq", "a", "(FF)V")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "sq", "P", "F")); toInject.add(new InsnNode(FCONST_2)); toInject.add(new InsnNode(FDIV)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "N", "F")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "x", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "y", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "z", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationX", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new LdcInsnNode(new Double("-0.024525"))); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationY", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationZ", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "slideDir", "B")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_1)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "Z", "Z")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new LdcInsnNode(new Float("0.8"))); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "aa", "F")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_4)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "dead", "B")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "bpdata", "I")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok10 = true; break; } } } else if (m.name.equals("<init>") && m.desc.equals("(Labv;DDDII)V")) { for (int index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getOpcode() == INVOKEVIRTUAL && m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && ((MethodInsnNode) m.instructions.get(index)).owner.equals("sq") && ((MethodInsnNode) m.instructions.get(index)).name.equals("a")) { m.instructions.set(m.instructions.get(index - 1), new LdcInsnNode(new Float("0.996"))); m.instructions.set(m.instructions.get(index - 2), new LdcInsnNode(new Float("0.996"))); ok = true; break; } } for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationX", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new LdcInsnNode(new Double("-0.024525"))); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationY", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationZ", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "slideDir", "B")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_1)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "Z", "Z")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new LdcInsnNode(new Float("0.8"))); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "aa", "F")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_4)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "dead", "B")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "bpdata", "I")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok2 = true; break; } } } else if (m.name.equals("K") && m.desc.equals("()Z")) { InsnList toInject = new InsnList(); toInject.add(new InsnNode(ICONST_0)); toInject.add(new InsnNode(IRETURN)); m.instructions.clear(); m.localVariables.clear(); m.instructions.add(toInject); ok9 = true; } else if (m.name.equals("l_") && m.desc.equals("()V")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "sq", "q", "Labv;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "fallingSandUpdate", "(Labv;Lsq;)V")); toInject.add(new InsnNode(RETURN)); m.instructions.clear(); m.localVariables.clear(); m.instructions.add(toInject); ok3 = true; } else if (m.name.equals("b") && m.desc.equals("(F)V")) { m.instructions.clear(); m.localVariables.clear(); m.instructions.add(new InsnNode(RETURN)); ok4 = true; } else if (m.name.equals("b") && m.desc.equals("(Lbx;)V")) { for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("Acceleration")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_3)); toInject.add(new IntInsnNode(NEWARRAY, T_DOUBLE)); toInject.add(new InsnNode(DUP)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "sq", "accelerationX", "D")); toInject.add(new InsnNode(DASTORE)); toInject.add(new InsnNode(DUP)); toInject.add(new InsnNode(ICONST_1)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "sq", "accelerationY", "D")); toInject.add(new InsnNode(DASTORE)); toInject.add(new InsnNode(DUP)); toInject.add(new InsnNode(ICONST_2)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "sq", "accelerationZ", "D")); toInject.add(new InsnNode(DASTORE)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "sq", "a", "([D)Lcf;")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "a", "(Ljava/lang/String;Lck;)V")); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("BPData")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "sq", "bpdata", "I")); toInject.add(new InsnNode(I2B)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "a", "(Ljava/lang/String;B)V")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok5 = true; break; } } } else if (m.name.equals("a") && m.desc.equals("(Lbx;)V")) { while (!(m.instructions.get(0).getType() == AbstractInsnNode.LDC_INSN && ((LdcInsnNode) m.instructions.get(0)).cst.equals("Data"))) { m.instructions.remove(m.instructions.get(0)); ok6 = true; } InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "readFallingSandID", "(Lbx;)I")); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "a", "I")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 1)); m.instructions.insertBefore(m.instructions.get(0), toInject); for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("Acceleration")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "b", "(Ljava/lang/String;)Z")); LabelNode l4 = new LabelNode(); toInject.add(new JumpInsnNode(IFEQ, l4)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("Acceleration")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "m", "(Ljava/lang/String;)Lcf;")); toInject.add(new VarInsnNode(ASTORE, 2)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 2)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "cf", "b", "(I)Lck;")); toInject.add(new TypeInsnNode(CHECKCAST, "ca")); toInject.add(new FieldInsnNode(GETFIELD, "ca", "a", "D")); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationX", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 2)); toInject.add(new InsnNode(ICONST_1)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "cf", "b", "(I)Lck;")); toInject.add(new TypeInsnNode(CHECKCAST, "ca")); toInject.add(new FieldInsnNode(GETFIELD, "ca", "a", "D")); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationY", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 2)); toInject.add(new InsnNode(ICONST_2)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "cf", "b", "(I)Lck;")); toInject.add(new TypeInsnNode(CHECKCAST, "ca")); toInject.add(new FieldInsnNode(GETFIELD, "ca", "a", "D")); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationZ", "D")); LabelNode l5 = new LabelNode(); toInject.add(new JumpInsnNode(GOTO, l5)); toInject.add(l4); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationX", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationY", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationZ", "D")); toInject.add(l5); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("BPData")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "b", "(Ljava/lang/String;)Z")); LabelNode l7 = new LabelNode(); toInject.add(new JumpInsnNode(IFEQ, l7)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("BPData")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "c", "(Ljava/lang/String;)B")); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "bpdata", "I")); LabelNode l8 = new LabelNode(); toInject.add(new JumpInsnNode(GOTO, l8)); toInject.add(l7); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "bpdata", "I")); toInject.add(l8); m.instructions.insertBefore(m.instructions.get(index), toInject); ok7 = true; break; } } } else if (m.name.equals("au") && m.desc.equals("()Z")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "sq", "ae", "()Z")); toInject.add(new InsnNode(IRETURN)); m.instructions.clear(); m.localVariables.clear(); m.instructions.add(toInject); ok8 = true; } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); FieldVisitor fv; fv = cw.visitField(ACC_PUBLIC, "accelerationX", "D", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "accelerationY", "D", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "accelerationZ", "D", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "bpdata", "I", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "slideDir", "B", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "media", "I", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "dead", "B", null, null); fv.visitEnd(); MethodVisitor mv; mv = cw.visitMethod(ACC_PUBLIC, "D", "()Lasu;", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, "sq", "E", "Lasu;"); mv.visitInsn(ARETURN); mv.visitMaxs(1, 1); mv.visitEnd(); mv = cw.visitMethod(ACC_PUBLIC, "al", "()V", null, null); mv.visitCode(); mv.visitInsn(RETURN); mv.visitMaxs(0, 1); mv.visitEnd(); mv = cw.visitMethod(ACC_PUBLIC, "d", "(DDD)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, "sq", "q", "Labv;"); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(DLOAD, 1); mv.visitVarInsn(DLOAD, 3); mv.visitVarInsn(DLOAD, 5); mv.visitMethodInsn(INVOKESTATIC, "blockphysics/BlockPhysics", "moveEntity", "(Labv;Lsq;DDD)V"); mv.visitInsn(RETURN); mv.visitMaxs(8, 7); mv.visitEnd(); if (!ok8) { mv = cw.visitMethod(ACC_PUBLIC, "au", "()Z", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, "sq", "ae", "()Z"); mv.visitInsn(IRETURN); mv.visitMaxs(0, 0); mv.visitEnd(); ok8 = true; } cw.visitEnd(); if (ok && ok2 && ok3 && ok4 && ok5 && ok6 && ok7 && ok8 && ok9 && ok10) System.out.println("OK"); else System.out.println("Failed." + ok + ok2 + ok3 + ok4 + ok5 + ok6 + ok7 + ok8 + ok9 + ok10); /*try { FileOutputStream fos = new FileOutputStream("d:/EntityFallingSand.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformRenderFallingSand(byte[] bytes) { /*try//from www . ja va 2 s . c o m { FileOutputStream fos = new FileOutputStream("d:/RenderFallingSand.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching RenderFallingSand.class ......."); boolean ok = false, ok2 = false, ok4 = false; ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); MethodNode m; Iterator<MethodNode> methods = classNode.methods.iterator(); while (methods.hasNext()) { m = methods.next(); if (m.name.equals("a") && m.desc.equals("(Lsq;DDDFF)V")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BClient", "cancelRender", "(Lsq;)Z")); LabelNode l0 = new LabelNode(); toInject.add(new JumpInsnNode(IFEQ, l0)); toInject.add(new InsnNode(RETURN)); toInject.add(l0); m.instructions.insertBefore(m.instructions.getFirst(), toInject); int index; for (index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getOpcode() == GETFIELD && m.instructions.get(index).getType() == AbstractInsnNode.FIELD_INSN && ((FieldInsnNode) m.instructions.get(index)).owner.equals("sq") && ((FieldInsnNode) m.instructions.get(index)).name.equals("a") && ((FieldInsnNode) m.instructions.get(index)).desc.equals("I")) { index = index + 3; ok = true; break; } } while (!(m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && ((MethodInsnNode) m.instructions.get(index)).name.equals("glPushMatrix"))) { m.instructions.remove(m.instructions.get(index)); ok2 = true; } for (index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getOpcode() == INVOKEVIRTUAL && m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && ((MethodInsnNode) m.instructions.get(index)).owner.equals("bfo") && ((MethodInsnNode) m.instructions.get(index)).name.equals("a") && ((MethodInsnNode) m.instructions.get(index)).desc.equals("(Laqw;Labv;IIII)V")) { m.instructions.set(m.instructions.get(index), new MethodInsnNode(INVOKESTATIC, "blockphysics/BClient", "renderBlockSandFalling", "(Lbfo;Laqw;Labv;IIII)V")); ok4 = true; break; } } } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); if (ok && ok2 && ok4) System.out.println("OK"); else System.out.println("Failed." + ok + ok2 + ok4); /*try { FileOutputStream fos = new FileOutputStream("d:/RenderFallingSand.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformNetClientHandler(byte[] bytes) { /*try//from w w w. j a va2 s. c o m { FileOutputStream fos = new FileOutputStream("d:/NetClientHandler.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching NetClientHandler.class ........"); boolean ok = false; ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); MethodNode m; Iterator<MethodNode> methods = classNode.methods.iterator(); while (methods.hasNext()) { m = methods.next(); if (m.name.equals("a") && m.desc.equals("(Ldc;)V")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "bct", "i", "Lbda;")); toInject.add(new VarInsnNode(DLOAD, 2)); toInject.add(new VarInsnNode(DLOAD, 4)); toInject.add(new VarInsnNode(DLOAD, 6)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "createFallingsand", "(Labv;DDDLdc;)Lsq;")); toInject.add(new VarInsnNode(ASTORE, 8)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new InsnNode(ICONST_1)); toInject.add(new FieldInsnNode(PUTFIELD, "dc", "k", "I")); for (int index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getOpcode() == INVOKESPECIAL && m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && ((MethodInsnNode) m.instructions.get(index)).owner.equals("sq") && ((MethodInsnNode) m.instructions.get(index)).name.equals("<init>")) { while (m.instructions.get(index).getType() != AbstractInsnNode.FIELD_INSN || m.instructions.get(index).getOpcode() != PUTFIELD || !((FieldInsnNode) m.instructions.get(index)).owner.equals("dc") || !((FieldInsnNode) m.instructions.get(index)).name.equals("k")) { index++; } while (m.instructions.get(index).getType() != AbstractInsnNode.TYPE_INSN || !((TypeInsnNode) m.instructions.get(index)).desc.equals("sq")) { m.instructions.remove(m.instructions.get(index)); index--; ok = true; } if (ok) { m.instructions.remove(m.instructions.get(index)); m.instructions.insertBefore(m.instructions.get(index), toInject); } break; } } } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); if (ok) System.out.println("OK"); else System.out.println("Failed." + ok); /*try { FileOutputStream fos = new FileOutputStream("d:/NetClientHandler.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }