List of usage examples for org.objectweb.asm ClassWriter visitEnd
@Override
public final void visitEnd()
From source file:ModuleInfoGenerator.java
License:Open Source License
public static void main(String[] args) throws Exception { File dest = new File(args[0]); ClassWriter cw = new ClassWriter(0); cw.visit(V9, Opcodes.ACC_MODULE, "module-info", null, null, null); ModuleVisitor mv = cw.visitModule("org.joml", 0, args[1]); mv.visitRequire("java.base", ACC_MANDATED, "9"); mv.visitRequire("jdk.unsupported", ACC_STATIC_PHASE, null); mv.visitExport("org/joml", 0, (String[]) null); mv.visitExport("org/joml/sampling", 0, (String[]) null); mv.visitEnd();//from ww w. ja v a2 s . c o m cw.visitEnd(); FileOutputStream fos = new FileOutputStream(new File(dest, "module-info.class")); fos.write(cw.toByteArray()); fos.close(); }
From source file:asm.de.qaware.campus.secpro.agent.impl.AdminServiceImplDump.java
License:Open Source License
public static byte[] dump() throws Exception { ClassWriter cw = new ClassWriter(0); FieldVisitor fv;/*from ww w. j av a2 s .co m*/ MethodVisitor mv; AnnotationVisitor av0; cw.visit(V1_7, ACC_PUBLIC + ACC_SUPER, "de/qaware/campus/secpro/agent/impl/LoginServiceImpl", null, "java/lang/Object", new String[] { "de/qaware/campus/secpro/agent/LoginService" }); // this here is the static LOGINS map { fv = cw.visitField(ACC_FINAL + ACC_STATIC, "LOGINS", "Ljava/util/Map;", "Ljava/util/Map<Ljava/lang/String;Ljava/lang/String;>;", null); fv.visitEnd(); } // this here is the default constructor { mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); mv.visitInsn(RETURN); mv.visitMaxs(1, 1); mv.visitEnd(); } // this here is the canLogin method { mv = cw.visitMethod(ACC_PUBLIC, "canLogin", "(Ljava/lang/String;Ljava/lang/String;)Z", null, null); mv.visitCode(); mv.visitFieldInsn(GETSTATIC, "de/qaware/campus/secpro/agent/impl/LoginServiceImpl", "LOGINS", "Ljava/util/Map;"); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Map", "get", "(Ljava/lang/Object;)Ljava/lang/Object;", true); mv.visitTypeInsn(CHECKCAST, "java/lang/String"); mv.visitVarInsn(ASTORE, 3); mv.visitVarInsn(ALOAD, 3); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKESTATIC, "java/util/Objects", "equals", "(Ljava/lang/Object;Ljava/lang/Object;)Z", false); mv.visitInsn(IRETURN); mv.visitMaxs(2, 4); mv.visitEnd(); } // this here is the static initializer { mv = cw.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null); mv.visitCode(); mv.visitMethodInsn(INVOKESTATIC, "com/google/common/collect/Maps", "newHashMap", "()Ljava/util/HashMap;", false); mv.visitFieldInsn(PUTSTATIC, "de/qaware/campus/secpro/agent/impl/LoginServiceImpl", "LOGINS", "Ljava/util/Map;"); mv.visitFieldInsn(GETSTATIC, "de/qaware/campus/secpro/agent/impl/LoginServiceImpl", "LOGINS", "Ljava/util/Map;"); mv.visitLdcInsn("admin"); mv.visitLdcInsn("Mellon"); mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Map", "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", true); mv.visitInsn(POP); mv.visitInsn(RETURN); mv.visitMaxs(3, 0); mv.visitEnd(); } cw.visitEnd(); return cw.toByteArray(); }
From source file:asm.de.qaware.campus.secpro.agent.impl.EavesdropAdminServiceImplDump.java
License:Open Source License
public static byte[] dump() throws Exception { ClassWriter cw = new ClassWriter(0); FieldVisitor fv;/* w ww.j ava 2 s .co m*/ MethodVisitor mv; AnnotationVisitor av0; cw.visit(V1_7, ACC_PUBLIC + ACC_SUPER, "de/qaware/campus/secpro/agent/impl/EavesdropLoginServiceImpl", null, "java/lang/Object", new String[] { "de/qaware/campus/secpro/agent/LoginService" }); // this here is the static LOGINS map { fv = cw.visitField(ACC_PRIVATE + ACC_FINAL + ACC_STATIC, "LOGINS", "Ljava/util/Map;", "Ljava/util/Map<Ljava/lang/String;Ljava/lang/String;>;", null); fv.visitEnd(); } // this here is the default constructor { mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); mv.visitInsn(RETURN); mv.visitMaxs(1, 1); mv.visitEnd(); } // this here is the modified canLogin method { mv = cw.visitMethod(ACC_PUBLIC, "canLogin", "(Ljava/lang/String;Ljava/lang/String;)Z", null, null); mv.visitCode(); // this here will place the method params on the call stack and // invoke the static eavesdrop method mv.visitVarInsn(ALOAD, 1); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKESTATIC, "de/qaware/campus/secpro/part03/TrojanCredentialStore", "eavesdrop", "(Ljava/lang/String;Ljava/lang/String;)V", false); // continue as usual mv.visitFieldInsn(GETSTATIC, "de/qaware/campus/secpro/agent/impl/EavesdropLoginServiceImpl", "LOGINS", "Ljava/util/Map;"); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Map", "get", "(Ljava/lang/Object;)Ljava/lang/Object;", true); mv.visitTypeInsn(CHECKCAST, "java/lang/String"); mv.visitVarInsn(ASTORE, 3); mv.visitVarInsn(ALOAD, 3); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKESTATIC, "java/util/Objects", "equals", "(Ljava/lang/Object;Ljava/lang/Object;)Z", false); mv.visitInsn(IRETURN); mv.visitMaxs(2, 4); mv.visitEnd(); } // this here is the static initializer { mv = cw.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null); mv.visitCode(); mv.visitMethodInsn(INVOKESTATIC, "com/google/common/collect/Maps", "newHashMap", "()Ljava/util/HashMap;", false); mv.visitFieldInsn(PUTSTATIC, "de/qaware/campus/secpro/agent/impl/EavesdropLoginServiceImpl", "LOGINS", "Ljava/util/Map;"); mv.visitFieldInsn(GETSTATIC, "de/qaware/campus/secpro/agent/impl/EavesdropLoginServiceImpl", "LOGINS", "Ljava/util/Map;"); mv.visitLdcInsn("admin"); mv.visitLdcInsn("Mellon"); mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Map", "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", true); mv.visitInsn(POP); mv.visitInsn(RETURN); mv.visitMaxs(3, 0); mv.visitEnd(); } cw.visitEnd(); return cw.toByteArray(); }
From source file:ataspectj.UnweavableTest.java
License:Open Source License
ISome getJit() {
ClassWriter cw = new ClassWriter(true, true);
cw.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, "ataspectj/ISomeGen", null, "java/lang/Object",
new String[] { "ataspectj/UnweavableTest$ISome" });
AnnotationVisitor av = cw.visitAnnotation("Lataspectj/UnweavableTest$ASome;", true);
av.visitEnd();/*from www. j av a 2s.c o m*/
MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, new String[0]);
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
mv.visitInsn(Opcodes.RETURN);
mv.visitMaxs(0, 0);
mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "giveOne", "()I", null, new String[0]);
mv.visitInsn(Opcodes.ICONST_2);
mv.visitInsn(Opcodes.IRETURN);
mv.visitMaxs(0, 0);
cw.visitEnd();
try {
ClassLoader loader = this.getClass().getClassLoader();
Method def = ClassLoader.class.getDeclaredMethod("defineClass",
new Class[] { String.class, byte[].class, int.class, int.class });
def.setAccessible(true);
Class gen = (Class) def.invoke(loader, "ataspectj.ISomeGen", cw.toByteArray(), 0,
cw.toByteArray().length);
return (ISome) gen.newInstance();
} catch (Throwable t) {
fail(t.toString());
return null;
}
}
From source file:ataspectj.UnweavableTest.java
License:Open Source License
Serializable getJitNoMatch() {
ClassWriter cw = new ClassWriter(true, true);
cw.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, "ataspectj/unmatched/Gen", null, "java/lang/Object",
new String[] { "java/io/Serializable" });
MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, new String[0]);
mv.visitVarInsn(Opcodes.ALOAD, 0);/*from www . j av a 2 s . c o m*/
mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
mv.visitInsn(Opcodes.RETURN);
mv.visitMaxs(0, 0);
cw.visitEnd();
try {
ClassLoader loader = this.getClass().getClassLoader();
Method def = ClassLoader.class.getDeclaredMethod("defineClass",
new Class[] { String.class, byte[].class, int.class, int.class });
def.setAccessible(true);
Class gen = (Class) def.invoke(loader, "ataspectj.unmatched.Gen", cw.toByteArray(), 0,
cw.toByteArray().length);
return (Serializable) gen.newInstance();
} catch (Throwable t) {
fail(t.toString());
return null;
}
}
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformTileEntityPiston(byte[] bytes) { /*try/*from w w w . j a va 2 s . c o m*/ { FileOutputStream fos = new FileOutputStream("d:/TileEntityPiston.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching TileEntityPiston.class ........"); boolean ok = false, ok2 = false, ok3 = false, ok4 = false, ok5 = 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("(IIIZZ)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(ACONST_NULL)); toInject.add(new FieldInsnNode(PUTFIELD, "ast", "movingBlockTileEntityData", "Lbx;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "ast", "bpmeta", "I")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok = true; break; } } } else if (m.name.equals("f") && m.desc.equals("()V")) { 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("abv") && ((MethodInsnNode) m.instructions.get(index)).name.equals("g") && ((MethodInsnNode) m.instructions.get(index)).desc.equals("(IIII)V")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "k", "Labv;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "l", "I")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "m", "I")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "n", "I")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "bpmeta", "I")); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "setBlockBPdata", "(Labv;IIII)Z")); toInject.add(new InsnNode(POP)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "movingBlockTileEntityData", "Lbx;")); LabelNode l1 = new LabelNode(); toInject.add(new JumpInsnNode(IFNULL, l1)); toInject.add(new FieldInsnNode(GETSTATIC, "aqw", "s", "[Laqw;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "a", "I")); toInject.add(new InsnNode(AALOAD)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "k", "Labv;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "b", "I")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "aqw", "createTileEntity", "(Labv;I)Lasm;")); toInject.add(new VarInsnNode(ASTORE, 1)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "movingBlockTileEntityData", "Lbx;")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "asm", "a", "(Lbx;)V")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "k", "Labv;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "l", "I")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "m", "I")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "n", "I")); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "abv", "a", "(IIILasm;)V")); toInject.add(l1); m.instructions.insert(m.instructions.get(index), toInject); ok2 = true; break; } } } else if (m.name.equals("a") && 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("BPData")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "b", "(Ljava/lang/String;)Z")); LabelNode l1 = new LabelNode(); toInject.add(new JumpInsnNode(IFEQ, l1)); 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, "ast", "bpmeta", "I")); toInject.add(l1); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("TileEntityData")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "b", "(Ljava/lang/String;)Z")); LabelNode l0 = new LabelNode(); toInject.add(new JumpInsnNode(IFEQ, l0)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("TileEntityData")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "l", "(Ljava/lang/String;)Lbx;")); toInject.add(new FieldInsnNode(PUTFIELD, "ast", "movingBlockTileEntityData", "Lbx;")); toInject.add(l0); m.instructions.insertBefore(m.instructions.get(index), toInject); ok3 = true; break; } } } 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("BPData")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "bpmeta", "I")); toInject.add(new InsnNode(I2B)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "a", "(Ljava/lang/String;B)V")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "movingBlockTileEntityData", "Lbx;")); LabelNode l0 = new LabelNode(); toInject.add(new JumpInsnNode(IFNULL, l0)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("TileEntityData")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "movingBlockTileEntityData", "Lbx;")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "a", "(Ljava/lang/String;Lbx;)V")); toInject.add(l0); m.instructions.insertBefore(m.instructions.get(index), toInject); ok4 = true; break; } } } else if (m.name.equals("h") && m.desc.equals("()V")) { 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("abv") && ((MethodInsnNode) m.instructions.get(index)).name.equals("g") && ((MethodInsnNode) m.instructions.get(index)).desc.equals("(IIII)V")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "k", "Labv;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "l", "I")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "m", "I")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "n", "I")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "bpmeta", "I")); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "setBlockBPdata", "(Labv;IIII)Z")); toInject.add(new InsnNode(POP)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "movingBlockTileEntityData", "Lbx;")); LabelNode l0 = new LabelNode(); toInject.add(new JumpInsnNode(IFNULL, l0)); toInject.add(new FieldInsnNode(GETSTATIC, "aqw", "s", "[Laqw;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "a", "I")); toInject.add(new InsnNode(AALOAD)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "k", "Labv;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "b", "I")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "aqw", "createTileEntity", "(Labv;I)Lasm;")); toInject.add(new VarInsnNode(ASTORE, 1)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "movingBlockTileEntityData", "Lbx;")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "asm", "a", "(Lbx;)V")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "k", "Labv;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "l", "I")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "m", "I")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "ast", "n", "I")); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "abv", "a", "(IIILasm;)V")); toInject.add(l0); m.instructions.insert(m.instructions.get(index), toInject); ok5 = true; break; } } } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); if (ok && ok2 && ok3 && ok4 && ok5) System.out.println("OK"); else System.out.println("Failed." + ok + ok2 + ok3 + ok4 + ok5); FieldVisitor fv; fv = cw.visitField(ACC_PUBLIC, "movingBlockTileEntityData", "Lbx;", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "bpmeta", "I", null, null); fv.visitEnd(); cw.visitEnd(); /*try { FileOutputStream fos = new FileOutputStream("d:/TileEntityPiston.mod.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[] transformExtendedBlockStorage(byte[] bytes) { /*try//from w w w. j a v a 2 s . co m { FileOutputStream fos = new FileOutputStream("d:/ExtendedBlockStorage.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching ExtendedBlockStorage.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("<init>") && m.desc.equals("(IZ)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 FrameNode(Opcodes.F_FULL, 3, new Object[] {"abx", Opcodes.INTEGER, Opcodes.INTEGER}, 0, new Object[] {})); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new IntInsnNode(SIPUSH, 4096)); toInject.add(new IntInsnNode(NEWARRAY, T_BYTE)); toInject.add(new FieldInsnNode(PUTFIELD, "adr", "blockBPdataArray", "[B")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok = true; break; } } } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "getBlockBPdata", "(III)I", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, "adr", "blockBPdataArray", "[B"); mv.visitVarInsn(ILOAD, 2); mv.visitIntInsn(SIPUSH, 256); mv.visitInsn(IMUL); mv.visitVarInsn(ILOAD, 1); mv.visitIntInsn(BIPUSH, 16); mv.visitInsn(IMUL); mv.visitInsn(IADD); mv.visitVarInsn(ILOAD, 3); mv.visitInsn(IADD); mv.visitInsn(BALOAD); mv.visitInsn(IRETURN); mv.visitMaxs(4, 4); mv.visitEnd(); mv = cw.visitMethod(ACC_PUBLIC, "setBlockBPdata", "(IIII)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, "adr", "blockBPdataArray", "[B"); mv.visitVarInsn(ILOAD, 2); mv.visitIntInsn(SIPUSH, 256); mv.visitInsn(IMUL); mv.visitVarInsn(ILOAD, 1); mv.visitIntInsn(BIPUSH, 16); mv.visitInsn(IMUL); mv.visitInsn(IADD); mv.visitVarInsn(ILOAD, 3); mv.visitInsn(IADD); mv.visitVarInsn(ILOAD, 4); mv.visitInsn(I2B); mv.visitInsn(BASTORE); mv.visitInsn(RETURN); mv.visitMaxs(4, 5); mv.visitEnd(); mv = cw.visitMethod(ACC_PUBLIC, "getBPdataArray", "()[B", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, "adr", "blockBPdataArray", "[B"); mv.visitInsn(ARETURN); mv.visitMaxs(1, 1); mv.visitEnd(); mv = cw.visitMethod(ACC_PUBLIC, "setBPdataArray", "([B)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 1); mv.visitFieldInsn(PUTFIELD, "adr", "blockBPdataArray", "[B"); mv.visitInsn(RETURN); mv.visitMaxs(2, 2); mv.visitEnd(); FieldVisitor fv; fv = cw.visitField(ACC_PRIVATE, "blockBPdataArray", "[B", null, null); fv.visitEnd(); cw.visitEnd(); if (ok) System.out.println("OK"); else System.out.println("Failed." + ok); /*try { FileOutputStream fos = new FileOutputStream("d:/ExtendedBlockStorage.mod.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[] transformChunk(byte[] bytes) { /*try//from w ww.j av a2 s . c o m { FileOutputStream fos = new FileOutputStream("d:/Chunk.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching Chunk.class ..................."); ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "getBlockBPdata", "(III)I", null, null); mv.visitCode(); mv.visitVarInsn(ILOAD, 2); mv.visitInsn(ICONST_4); mv.visitInsn(ISHR); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, "adq", "r", "[Ladr;"); mv.visitInsn(ARRAYLENGTH); Label l0 = new Label(); mv.visitJumpInsn(IF_ICMPLT, l0); mv.visitInsn(ICONST_0); mv.visitInsn(IRETURN); mv.visitLabel(l0); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, "adq", "r", "[Ladr;"); mv.visitVarInsn(ILOAD, 2); mv.visitInsn(ICONST_4); mv.visitInsn(ISHR); mv.visitInsn(AALOAD); mv.visitVarInsn(ASTORE, 4); mv.visitVarInsn(ALOAD, 4); Label l1 = new Label(); mv.visitJumpInsn(IFNULL, l1); mv.visitVarInsn(ALOAD, 4); mv.visitVarInsn(ILOAD, 1); mv.visitVarInsn(ILOAD, 2); mv.visitIntInsn(BIPUSH, 15); mv.visitInsn(IAND); mv.visitVarInsn(ILOAD, 3); mv.visitMethodInsn(INVOKEVIRTUAL, "adr", "getBlockBPdata", "(III)I"); Label l2 = new Label(); mv.visitJumpInsn(GOTO, l2); mv.visitLabel(l1); mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { "adr" }, 0, null); mv.visitInsn(ICONST_0); mv.visitLabel(l2); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { Opcodes.INTEGER }); mv.visitInsn(IRETURN); mv.visitMaxs(4, 5); mv.visitEnd(); mv = cw.visitMethod(ACC_PUBLIC, "setBlockBPdata", "(IIII)Z", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, "adq", "r", "[Ladr;"); mv.visitVarInsn(ILOAD, 2); mv.visitInsn(ICONST_4); mv.visitInsn(ISHR); mv.visitInsn(AALOAD); mv.visitVarInsn(ASTORE, 5); mv.visitVarInsn(ALOAD, 5); Label lab0 = new Label(); mv.visitJumpInsn(IFNONNULL, lab0); mv.visitInsn(ICONST_0); mv.visitInsn(IRETURN); mv.visitLabel(lab0); mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { "adr" }, 0, null); mv.visitVarInsn(ALOAD, 5); mv.visitVarInsn(ILOAD, 1); mv.visitVarInsn(ILOAD, 2); mv.visitIntInsn(BIPUSH, 15); mv.visitInsn(IAND); mv.visitVarInsn(ILOAD, 3); mv.visitMethodInsn(INVOKEVIRTUAL, "adr", "getBlockBPdata", "(III)I"); mv.visitVarInsn(ISTORE, 6); mv.visitVarInsn(ILOAD, 6); mv.visitVarInsn(ILOAD, 4); Label lab1 = new Label(); mv.visitJumpInsn(IF_ICMPNE, lab1); mv.visitInsn(ICONST_0); mv.visitInsn(IRETURN); mv.visitLabel(lab1); mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { Opcodes.INTEGER }, 0, null); mv.visitVarInsn(ALOAD, 0); mv.visitInsn(ICONST_1); mv.visitFieldInsn(PUTFIELD, "adq", "l", "Z"); mv.visitVarInsn(ALOAD, 5); mv.visitVarInsn(ILOAD, 1); mv.visitVarInsn(ILOAD, 2); mv.visitIntInsn(BIPUSH, 15); mv.visitInsn(IAND); mv.visitVarInsn(ILOAD, 3); mv.visitVarInsn(ILOAD, 4); mv.visitMethodInsn(INVOKEVIRTUAL, "adr", "setBlockBPdata", "(IIII)V"); mv.visitInsn(ICONST_1); mv.visitInsn(IRETURN); mv.visitMaxs(5, 7); mv.visitEnd(); cw.visitEnd(); System.out.println("OK"); /*try { FileOutputStream fos = new FileOutputStream("d:/Chunk.mod.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[] transformEntityMinecart(byte[] bytes) { /*try// w ww. ja v a 2 s . c om { FileOutputStream fos = new FileOutputStream("d:/EntityMinecart.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching EntityMinecart.class .........."); ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "al", "()V", null, null); mv.visitCode(); mv.visitInsn(RETURN); mv.visitMaxs(0, 1); mv.visitEnd(); cw.visitEnd(); System.out.println("OK"); /*try { FileOutputStream fos = new FileOutputStream("d:/EntityMinecart.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[] transformEntityXPOrb(byte[] bytes) { /*try/*ww w. jav a 2 s. co m*/ { FileOutputStream fos = new FileOutputStream("d:/EntityXPOrb.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching EntityXPOrb.class ............."); ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "al", "()V", null, null); mv.visitCode(); mv.visitInsn(RETURN); mv.visitMaxs(0, 1); mv.visitEnd(); cw.visitEnd(); System.out.println("OK"); /*try { FileOutputStream fos = new FileOutputStream("d:/EntityXPOrb.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }