Examples with ObfMapping com.builtbroken.mc.lib.asm.ObfMapping used on opensource projects

Example 1 with ObfMapping

use of com.builtbroken.mc.lib.asm.ObfMapping in project Engine by VoltzEngine-Project.

the class ChunkTransformer method transform.

@Override
public byte[] transform(String name, String transformedName, byte[] bytes) {
    if (transformedName.equals("net.minecraft.world.chunk.Chunk")) {
        EngineCoreMod.logger.info("Transforming Chunk class for chunkModified event.");
        ClassNode cnode = ASMHelper.createClassNode(bytes);
        for (MethodNode method : cnode.methods) {
            ObfMapping m = new ObfMapping(cnode.name, method.name, method.desc).toRuntime();
            if (m.s_name.equals("func_150807_a")) {
                EngineCoreMod.logger.info("[Voltz-Engine] Found method " + m.s_name);
                InsnList list = new InsnList();
                list.add(new VarInsnNode(ALOAD, 0));
                list.add(new VarInsnNode(ILOAD, 1));
                list.add(new VarInsnNode(ILOAD, 2));
                list.add(new VarInsnNode(ILOAD, 3));
                list.add(new VarInsnNode(ALOAD, 4));
                list.add(new VarInsnNode(ILOAD, 5));
                list.add(new MethodInsnNode(INVOKESTATIC, "com/builtbroken/mc/core/asm/StaticForwarder", "chunkSetBlockEvent", "(Lnet/minecraft/world/chunk/Chunk;IIILnet/minecraft/block/Block;I)V"));
                AbstractInsnNode lastInsn = method.instructions.getLast();
                while (lastInsn instanceof LabelNode || lastInsn instanceof LineNumberNode) {
                    lastInsn = lastInsn.getPrevious();
                }
                if (isReturn(lastInsn)) {
                    method.instructions.insertBefore(lastInsn, list);
                } else {
                    method.instructions.insert(list);
                }
                EngineCoreMod.logger.info("Injected instruction to method: " + m.s_name);
            }
        }
        return ASMHelper.createBytes(cnode, 0);
    }
    return bytes;
}

Example 2 with ObfMapping

use of com.builtbroken.mc.lib.asm.ObfMapping in project Engine by VoltzEngine-Project.

the class InjectionTemplate method init.

//Called late to avoid loading class data in the constructor
private boolean init() {
    if (!init) {
        init = true;
        try {
            final ClassNode cnode = ASMHelper.createClassNode(((LaunchClassLoader) InjectionTemplate.class.getClassLoader()).getClassBytes(className.replace('/', '.')));
            for (MethodNode method : cnode.methods) {
                this.methodImplementations.add(method);
                method.desc = new ObfMapping(cnode.name, method.name, method.desc).toRuntime().s_desc;
            }
        } catch (IOException e) {
            //TODO error out in dev mode
            //TODO make notation to users that this injector failed
            e.printStackTrace();
            failedToLoadClass = true;
        }
    }
    return failedToLoadClass;
}

Example 3 with ObfMapping

use of com.builtbroken.mc.lib.asm.ObfMapping in project Engine by VoltzEngine-Project.

the class InjectionTemplate method patch.

/**
     * Patches the cnode with the methods from this template.
     *
     * @param cnode
     * @return
     */
public boolean patch(ClassNode cnode, boolean injectConstructor) {
    //Init data, if return true then init failed
    if (init()) {
        return false;
    }
    for (String interfaceName : this.interfaces) {
        String interfaceByteName = interfaceName.replace(".", "/");
        if (!cnode.interfaces.contains(interfaceByteName)) {
            cnode.interfaces.add(interfaceByteName);
        } else {
            return false;
        }
    }
    boolean changed = false;
    LinkedList<String> names = new LinkedList<String>();
    for (MethodNode method : cnode.methods) {
        ObfMapping m = new ObfMapping(cnode.name, method.name, method.desc).toRuntime();
        names.add(m.s_name + m.s_desc);
    }
    for (MethodNode impl : this.methodImplementations) {
        if (!impl.name.equals("<init>") || injectConstructor) {
            /**
                 * If the method is ALREADY implemented, then skip it.
                 */
            if (names.contains(impl.name + impl.desc)) {
                continue;
            }
            ObfMapping mapping = new ObfMapping(cnode.name, impl.name, impl.desc).toRuntime();
            MethodNode copy = new MethodNode(impl.access, mapping.s_name, mapping.s_desc, impl.signature, impl.exceptions == null ? null : impl.exceptions.toArray(new String[0]));
            ASMHelper.copy(impl, copy);
            cnode.methods.add(impl);
            changed = true;
        }
    }
    return changed;
}