Example usage for org.objectweb.asm.tree AbstractInsnNode getPrevious

List of usage examples for org.objectweb.asm.tree AbstractInsnNode getPrevious

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Introduction

In this page you can find the example usage for org.objectweb.asm.tree AbstractInsnNode getPrevious.

Prototype

public AbstractInsnNode getPrevious()

Source Link

Document

Returns the previous instruction in the list to which this instruction belongs, if any.

Usage

From source file:br.usp.each.saeg.badua.core.internal.instr.LabelFrameNode.java

License:Open Source License

private static LabelFrameNode create(final AbstractInsnNode location) {
    AbstractInsnNode insn = location.getPrevious();
    if (insn == null) {
        return null;
    }/*from  w w  w  .  j  a  va2 s .c  om*/
    while (true) {
        switch (insn.getType()) {
        case AbstractInsnNode.LABEL:
            return create((LabelFrameNode) insn);
        case AbstractInsnNode.FRAME:
        case AbstractInsnNode.LINE:
            insn = insn.getPrevious();
            continue;
        default:
            return null;
        }
    }
}

From source file:Client.JClassPatcher.java

License:Open Source License

private void patchClient(ClassNode node) {
    Logger.Info("Patching client (" + node.name + ".class)");

    Iterator<MethodNode> methodNodeList = node.methods.iterator();
    while (methodNodeList.hasNext()) {
        MethodNode methodNode = methodNodeList.next();

        // I (I)V is where most of the interface is processed
        if (methodNode.name.equals("I") && methodNode.desc.equals("(I)V")) {
            // Show combat menu
            Iterator<AbstractInsnNode> insnNodeList = methodNode.instructions.iterator();
            while (insnNodeList.hasNext()) {
                AbstractInsnNode insnNode = insnNodeList.next();

                if (insnNode.getOpcode() == Opcodes.BIPUSH) {
                    IntInsnNode bipush = (IntInsnNode) insnNode;

                    if (bipush.operand == -9) {
                        AbstractInsnNode findNode = insnNode;
                        while (findNode.getOpcode() != Opcodes.IF_ICMPEQ)
                            findNode = findNode.getNext();

                        LabelNode label = ((JumpInsnNode) findNode).label;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Client/Settings", "COMBAT_MENU", "Z"));
                        methodNode.instructions.insertBefore(insnNode, new JumpInsnNode(Opcodes.IFGT, label));
                        break;
                    }/*from  ww w. j ava2s . co m*/
                }
            }
        } else if (methodNode.name.equals("J") && methodNode.desc.equals("(I)V")) {
            Iterator<AbstractInsnNode> insnNodeList = methodNode.instructions.iterator();
            while (insnNodeList.hasNext()) {
                AbstractInsnNode insnNode = insnNodeList.next();

                // Chat command patch
                if (insnNode.getOpcode() == Opcodes.SIPUSH) {
                    IntInsnNode call = (IntInsnNode) insnNode;
                    if (call.operand == 627) {
                        AbstractInsnNode jmpNode = insnNode;
                        while (jmpNode.getOpcode() != Opcodes.IFEQ)
                            jmpNode = jmpNode.getNext();

                        AbstractInsnNode insertNode = insnNode;
                        while (insertNode.getOpcode() != Opcodes.INVOKEVIRTUAL)
                            insertNode = insertNode.getPrevious();

                        JumpInsnNode jmp = (JumpInsnNode) jmpNode;
                        methodNode.instructions.insert(insertNode, new VarInsnNode(Opcodes.ASTORE, 2));
                        methodNode.instructions.insert(insertNode, new MethodInsnNode(Opcodes.INVOKESTATIC,
                                "Game/Client", "processChatCommand", "(Ljava/lang/String;)Ljava/lang/String;"));
                        methodNode.instructions.insert(insertNode, new VarInsnNode(Opcodes.ALOAD, 2));
                    }
                }
            }
        } else if (methodNode.name.equals("h") && methodNode.desc.equals("(B)V")) {
            Iterator<AbstractInsnNode> insnNodeList = methodNode.instructions.iterator();
            while (insnNodeList.hasNext()) {
                AbstractInsnNode insnNode = insnNodeList.next();

                // Private chat command patch
                if (insnNode.getOpcode() == Opcodes.GETFIELD) {
                    FieldInsnNode field = (FieldInsnNode) insnNode;
                    if (field.owner.equals("client") && field.name.equals("Ob")
                            && insnNode.getPrevious().getPrevious().getOpcode() != Opcodes.INVOKEVIRTUAL) {
                        insnNode = insnNode.getPrevious().getPrevious();
                        methodNode.instructions.insert(insnNode,
                                new FieldInsnNode(Opcodes.PUTFIELD, "client", "Ob", "Ljava/lang/String;"));
                        methodNode.instructions.insert(insnNode,
                                new MethodInsnNode(Opcodes.INVOKESTATIC, "Game/Client", "processPrivateCommand",
                                        "(Ljava/lang/String;)Ljava/lang/String;"));
                        methodNode.instructions.insert(insnNode,
                                new FieldInsnNode(Opcodes.GETFIELD, "client", "Ob", "Ljava/lang/String;"));
                        methodNode.instructions.insert(insnNode, new VarInsnNode(Opcodes.ALOAD, 0));
                        methodNode.instructions.insert(insnNode, new VarInsnNode(Opcodes.ALOAD, 0));
                        break;
                    }
                }
            }
        } else if (methodNode.name.equals("a") && methodNode.desc.equals("(IIIIIIII)V")) {
            // Draw NPC hook
            AbstractInsnNode insnNode = methodNode.instructions.getLast();
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 8));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 1));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 7));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 4));

            methodNode.instructions.insertBefore(insnNode,
                    new FieldInsnNode(Opcodes.GETSTATIC, "e", "Mb", "[Ljava/lang/String;"));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ALOAD, 0));
            methodNode.instructions.insertBefore(insnNode,
                    new FieldInsnNode(Opcodes.GETFIELD, "client", "Tb", "[Lta;"));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 6));
            methodNode.instructions.insertBefore(insnNode, new InsnNode(Opcodes.AALOAD));
            methodNode.instructions.insertBefore(insnNode, new FieldInsnNode(Opcodes.GETFIELD, "ta", "t", "I"));
            methodNode.instructions.insertBefore(insnNode, new InsnNode(Opcodes.AALOAD));
            methodNode.instructions.insertBefore(insnNode, new MethodInsnNode(Opcodes.INVOKESTATIC,
                    "Game/Client", "drawNPC", "(IIIILjava/lang/String;)V"));
        } else if (methodNode.name.equals("b") && methodNode.desc.equals("(IIIIIIII)V")) {
            // Draw Player hook
            AbstractInsnNode insnNode = methodNode.instructions.getLast();
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 5));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 6));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 2));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 7));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ALOAD, 0));
            methodNode.instructions.insertBefore(insnNode,
                    new FieldInsnNode(Opcodes.GETFIELD, "client", "rg", "[Lta;"));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 8));
            methodNode.instructions.insertBefore(insnNode, new InsnNode(Opcodes.AALOAD));
            methodNode.instructions.insertBefore(insnNode,
                    new FieldInsnNode(Opcodes.GETFIELD, "ta", "C", "Ljava/lang/String;"));
            methodNode.instructions.insertBefore(insnNode, new MethodInsnNode(Opcodes.INVOKESTATIC,
                    "Game/Client", "drawPlayer", "(IIIILjava/lang/String;)V"));
        } else if (methodNode.name.equals("b") && methodNode.desc.equals("(IIIIIII)V")) {
            // Draw Item hook
            // ILOAD 4 is item id
            AbstractInsnNode insnNode = methodNode.instructions.getLast();
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 3));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 7));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 5));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 1));
            methodNode.instructions.insertBefore(insnNode, new VarInsnNode(Opcodes.ILOAD, 4));
            methodNode.instructions.insertBefore(insnNode,
                    new MethodInsnNode(Opcodes.INVOKESTATIC, "Game/Client", "drawItem", "(IIIII)V"));
        } else if (methodNode.name.equals("L") && methodNode.desc.equals("(I)V")) {
            Iterator<AbstractInsnNode> insnNodeList = methodNode.instructions.iterator();
            while (insnNodeList.hasNext()) {
                AbstractInsnNode insnNode = insnNodeList.next();

                // Right click bounds fix
                if (insnNode.getOpcode() == Opcodes.SIPUSH) {
                    IntInsnNode call = (IntInsnNode) insnNode;
                    AbstractInsnNode nextNode = insnNode.getNext();

                    if (call.operand == 510) {
                        call.operand = 512 - call.operand;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.ISUB));
                    } else if (call.operand == 315) {
                        call.operand = 334 - call.operand;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "height_client", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.ISUB));
                    } else if (call.operand == -316) {
                        call.operand = 334 - (call.operand * -1);
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "height_client", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.INEG));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.ISUB));
                    }
                }
            }
        } else if (methodNode.name.equals("a") && methodNode.desc.equals("(ZZ)V")) {
            Iterator<AbstractInsnNode> insnNodeList = methodNode.instructions.iterator();
            while (insnNodeList.hasNext()) {
                AbstractInsnNode insnNode = insnNodeList.next();

                // Friends chat mouse fix
                if (insnNode.getOpcode() == Opcodes.SIPUSH) {
                    IntInsnNode call = (IntInsnNode) insnNode;
                    if (call.operand == 489 || call.operand == 429) {
                        call.operand = 512 - call.operand;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.ISUB));
                    }
                    if (call.operand == -430) {
                        call.operand = 512 - (call.operand * -1);
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.INEG));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.ISUB));
                    }
                }
            }
        } else if (methodNode.name.equals("i") && methodNode.desc.equals("(I)V")) {
            AbstractInsnNode lastNode = methodNode.instructions.getLast().getPrevious();

            // Send combat style option
            LabelNode label = new LabelNode();

            methodNode.instructions.insert(lastNode, label);

            // Format
            methodNode.instructions.insert(lastNode,
                    new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "da", "b", "(I)V", false));
            methodNode.instructions.insert(lastNode, new IntInsnNode(Opcodes.SIPUSH, 21294));
            methodNode.instructions.insert(lastNode,
                    new FieldInsnNode(Opcodes.GETFIELD, "client", "Jh", "Lda;"));
            methodNode.instructions.insert(lastNode, new VarInsnNode(Opcodes.ALOAD, 0));

            // Write byte
            methodNode.instructions.insert(lastNode,
                    new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "ja", "c", "(II)V", false));
            methodNode.instructions.insert(lastNode, new IntInsnNode(Opcodes.BIPUSH, -80));
            methodNode.instructions.insert(lastNode,
                    new FieldInsnNode(Opcodes.GETSTATIC, "Client/Settings", "COMBAT_STYLE", "I"));
            methodNode.instructions.insert(lastNode, new FieldInsnNode(Opcodes.GETFIELD, "da", "f", "Lja;"));
            methodNode.instructions.insert(lastNode,
                    new FieldInsnNode(Opcodes.GETFIELD, "client", "Jh", "Lda;"));
            methodNode.instructions.insert(lastNode, new VarInsnNode(Opcodes.ALOAD, 0));

            // Create Packet
            methodNode.instructions.insert(lastNode,
                    new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "da", "b", "(II)V", false));
            methodNode.instructions.insert(lastNode, new InsnNode(Opcodes.ICONST_0));
            methodNode.instructions.insert(lastNode, new IntInsnNode(Opcodes.BIPUSH, 29));
            methodNode.instructions.insert(lastNode,
                    new FieldInsnNode(Opcodes.GETFIELD, "client", "Jh", "Lda;"));
            methodNode.instructions.insert(lastNode, new VarInsnNode(Opcodes.ALOAD, 0));

            // Skip combat packet if style is already controlled
            methodNode.instructions.insert(lastNode, new JumpInsnNode(Opcodes.IF_ICMPLE, label));
            methodNode.instructions.insert(lastNode, new InsnNode(Opcodes.ICONST_0));
            methodNode.instructions.insert(lastNode,
                    new FieldInsnNode(Opcodes.GETSTATIC, "Client/Settings", "COMBAT_STYLE", "I"));

            // Client init_game
            methodNode.instructions.insert(lastNode,
                    new MethodInsnNode(Opcodes.INVOKESTATIC, "Game/Client", "init_game", "()V", false));
        } else if (methodNode.name.equals("o") && methodNode.desc.equals("(I)V")) {
            // Client.init_login patch
            AbstractInsnNode findNode = methodNode.instructions.getLast();
            methodNode.instructions.insertBefore(findNode,
                    new MethodInsnNode(Opcodes.INVOKESTATIC, "Game/Client", "init_login", "()V", false));
        } else if (methodNode.name.equals("a") && methodNode.desc.equals("(B)V")) {
            Iterator<AbstractInsnNode> insnNodeList = methodNode.instructions.iterator();
            while (insnNodeList.hasNext()) {
                AbstractInsnNode insnNode = insnNodeList.next();

                // Camera view distance crash fix
                if (insnNode.getOpcode() == Opcodes.SIPUSH) {
                    IntInsnNode call = (IntInsnNode) insnNode;
                    if (call.operand == 15000) {
                        call.operand = 32767;
                    }
                }
            }

            // Client.init patch
            AbstractInsnNode findNode = methodNode.instructions.getFirst();
            methodNode.instructions.insertBefore(findNode, new VarInsnNode(Opcodes.ALOAD, 0));
            methodNode.instructions.insertBefore(findNode,
                    new FieldInsnNode(Opcodes.PUTSTATIC, "Game/Client", "instance", "Ljava/lang/Object;"));
            methodNode.instructions.insertBefore(findNode,
                    new MethodInsnNode(Opcodes.INVOKESTATIC, "Game/Client", "init", "()V", false));
        } else if (methodNode.name.equals("G") && methodNode.desc.equals("(I)V")) {
            // TODO: This can be shortened, I'll fix it another time

            // NPC Dialogue keyboard
            AbstractInsnNode lastNode = methodNode.instructions.getLast().getPrevious();

            LabelNode label = new LabelNode();

            methodNode.instructions.insert(lastNode, label);

            // Hide dialogue
            methodNode.instructions.insert(lastNode, new FieldInsnNode(Opcodes.PUTFIELD, "client", "Ph", "Z"));
            methodNode.instructions.insert(lastNode, new InsnNode(Opcodes.ICONST_0));
            methodNode.instructions.insert(lastNode, new VarInsnNode(Opcodes.ALOAD, 0));

            // Format
            methodNode.instructions.insert(lastNode,
                    new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "da", "b", "(I)V", false));
            methodNode.instructions.insert(lastNode, new IntInsnNode(Opcodes.SIPUSH, 21294));
            methodNode.instructions.insert(lastNode,
                    new FieldInsnNode(Opcodes.GETFIELD, "client", "Jh", "Lda;"));
            methodNode.instructions.insert(lastNode, new VarInsnNode(Opcodes.ALOAD, 0));

            // Write byte
            methodNode.instructions.insert(lastNode,
                    new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "ja", "c", "(II)V", false));
            methodNode.instructions.insert(lastNode, new IntInsnNode(Opcodes.BIPUSH, 115));
            methodNode.instructions.insert(lastNode,
                    new FieldInsnNode(Opcodes.GETSTATIC, "Game/KeyboardHandler", "dialogue_option", "I"));
            methodNode.instructions.insert(lastNode, new FieldInsnNode(Opcodes.GETFIELD, "da", "f", "Lja;"));
            methodNode.instructions.insert(lastNode,
                    new FieldInsnNode(Opcodes.GETFIELD, "client", "Jh", "Lda;"));
            methodNode.instructions.insert(lastNode, new VarInsnNode(Opcodes.ALOAD, 0));

            // Create Packet
            methodNode.instructions.insert(lastNode,
                    new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "da", "b", "(II)V", false));
            methodNode.instructions.insert(lastNode, new InsnNode(Opcodes.ICONST_0));
            methodNode.instructions.insert(lastNode, new IntInsnNode(Opcodes.BIPUSH, 116));
            methodNode.instructions.insert(lastNode,
                    new FieldInsnNode(Opcodes.GETFIELD, "client", "Jh", "Lda;"));
            methodNode.instructions.insert(lastNode, new VarInsnNode(Opcodes.ALOAD, 0));

            // Check if dialogue option is pressed
            methodNode.instructions.insert(lastNode, new JumpInsnNode(Opcodes.IF_ICMPGE, label));
            // Menu option count
            methodNode.instructions.insert(lastNode, new FieldInsnNode(Opcodes.GETFIELD, "client", "Id", "I"));
            methodNode.instructions.insert(lastNode, new VarInsnNode(Opcodes.ALOAD, 0));
            methodNode.instructions.insert(lastNode,
                    new FieldInsnNode(Opcodes.GETSTATIC, "Game/KeyboardHandler", "dialogue_option", "I"));
            methodNode.instructions.insert(lastNode, new JumpInsnNode(Opcodes.IFLT, label));
            methodNode.instructions.insert(lastNode,
                    new FieldInsnNode(Opcodes.GETSTATIC, "Game/KeyboardHandler", "dialogue_option", "I"));
        } else if (methodNode.name.equals("f") && methodNode.desc.equals("(I)V")) {
            Iterator<AbstractInsnNode> insnNodeList = methodNode.instructions.iterator();
            while (insnNodeList.hasNext()) {
                AbstractInsnNode insnNode = insnNodeList.next();

                // Hide Roof option
                if (insnNode.getOpcode() == Opcodes.GETFIELD) {
                    FieldInsnNode field = (FieldInsnNode) insnNode;

                    if (field.owner.equals("client") && field.name.equals("yj")) {
                        AbstractInsnNode nextNode = insnNode.getNext();
                        if (nextNode.getOpcode() == Opcodes.IFNE) {
                            LabelNode label = ((JumpInsnNode) nextNode).label;
                            methodNode.instructions.insert(nextNode, new JumpInsnNode(Opcodes.IFGT, label));
                            methodNode.instructions.insert(nextNode,
                                    new FieldInsnNode(Opcodes.GETSTATIC, "Client/Settings", "HIDE_ROOFS", "Z"));
                        }
                    }
                }

                // Move wilderness skull
                if (insnNode.getOpcode() == Opcodes.SIPUSH) {
                    IntInsnNode call = (IntInsnNode) insnNode;
                    if (call.operand == 465 || call.operand == 453) {
                        call.operand = 512 - call.operand;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.ISUB));
                    }
                }
            }
        } else if (methodNode.name.equals("a") && methodNode.desc.equals("(IIZ)Z")) {
            Iterator<AbstractInsnNode> insnNodeList = methodNode.instructions.iterator();
            while (insnNodeList.hasNext()) {
                AbstractInsnNode insnNode = insnNodeList.next();

                // Move the load screen text dialogue
                if (insnNode.getOpcode() == Opcodes.SIPUSH) {
                    IntInsnNode call = (IntInsnNode) insnNode;
                    if (call.operand == 256) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    } else if (call.operand == 192) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "height", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IADD));
                        methodNode.instructions.insert(insnNode, new IntInsnNode(Opcodes.SIPUSH, 19));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    }
                }
            }
        } else if (methodNode.name.equals("d") && methodNode.desc.equals("(B)V")) {
            Iterator<AbstractInsnNode> insnNodeList = methodNode.instructions.iterator();
            while (insnNodeList.hasNext()) {
                AbstractInsnNode insnNode = insnNodeList.next();

                // Center logout dialogue
                if (insnNode.getOpcode() == Opcodes.SIPUSH || insnNode.getOpcode() == Opcodes.BIPUSH) {
                    IntInsnNode call = (IntInsnNode) insnNode;
                    if (call.operand == 256) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    } else if (call.operand == 173) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "height", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    } else if (call.operand == 126) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.ISUB));
                        methodNode.instructions.insert(insnNode, new IntInsnNode(Opcodes.SIPUSH, 130));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    } else if (call.operand == 137) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "height", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.ISUB));
                        methodNode.instructions.insert(insnNode, new IntInsnNode(Opcodes.SIPUSH, 36));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    }
                }
            }
        } else if (methodNode.name.equals("j") && methodNode.desc.equals("(I)V")) {
            Iterator<AbstractInsnNode> insnNodeList = methodNode.instructions.iterator();
            while (insnNodeList.hasNext()) {
                AbstractInsnNode insnNode = insnNodeList.next();

                // Center welcome box
                if (insnNode.getOpcode() == Opcodes.SIPUSH || insnNode.getOpcode() == Opcodes.BIPUSH) {
                    IntInsnNode call = (IntInsnNode) insnNode;
                    if (call.operand == 256) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    } else if (call.operand == 167) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "height", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.ISUB));
                        methodNode.instructions.insert(insnNode, new IntInsnNode(Opcodes.SIPUSH, 6));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    } else if (call.operand == 56) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.ISUB));
                        methodNode.instructions.insert(insnNode, new IntInsnNode(Opcodes.SIPUSH, 200));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    } else if (call.operand == -87) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.INEG));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.ISUB));
                        methodNode.instructions.insert(insnNode, new IntInsnNode(Opcodes.SIPUSH, 169));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    } else if (call.operand == 426) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IADD));
                        methodNode.instructions.insert(insnNode, new IntInsnNode(Opcodes.SIPUSH, 170));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    } else if (call.operand == 106) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.ISUB));
                        methodNode.instructions.insert(insnNode, new IntInsnNode(Opcodes.SIPUSH, 150));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    } else if (call.operand == 406) {
                        call.operand = 2;
                        methodNode.instructions.insertBefore(insnNode,
                                new FieldInsnNode(Opcodes.GETSTATIC, "Game/Renderer", "width", "I"));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IADD));
                        methodNode.instructions.insert(insnNode, new IntInsnNode(Opcodes.SIPUSH, 150));
                        methodNode.instructions.insert(insnNode, new InsnNode(Opcodes.IDIV));
                    }
                }
            }
        } else if (methodNode.name.equals("k") && methodNode.desc.equals("(B)V")) {
            Iterator<AbstractInsnNode> insnNodeList = methodNode.instructions.iterator();
            while (insnNodeList.hasNext()) {
                AbstractInsnNode insnNode = insnNodeList.next();

                // Save settings from combat menu
                if (insnNode.getOpcode() == Opcodes.PUTFIELD) {
                    FieldInsnNode field = (FieldInsnNode) insnNode;

                    if (field.owner.equals("client") && field.name.equals("Fg")) {
                        methodNode.instructions.insert(insnNode, new MethodInsnNode(Opcodes.INVOKESTATIC,
                                "Client/Settings", "save", "()V", false));
                        methodNode.instructions.insert(insnNode,
                                new FieldInsnNode(Opcodes.PUTSTATIC, "Client/Settings", "COMBAT_STYLE", "I"));
                        methodNode.instructions.insert(insnNode,
                                new FieldInsnNode(Opcodes.GETFIELD, "client", "Fg", "I"));
                        methodNode.instructions.insert(insnNode, new VarInsnNode(Opcodes.ALOAD, 0));
                    }
                }
            }
        } else if (methodNode.name.equals("a") && methodNode.desc
                .equals("(ZLjava/lang/String;ILjava/lang/String;IILjava/lang/String;Ljava/lang/String;)V")) {
            AbstractInsnNode first = methodNode.instructions.getFirst();
            methodNode.instructions.insertBefore(first, new VarInsnNode(Opcodes.ALOAD, 7));
            methodNode.instructions.insertBefore(first, new VarInsnNode(Opcodes.ALOAD, 4));
            methodNode.instructions.insertBefore(first, new VarInsnNode(Opcodes.ILOAD, 5));
            methodNode.instructions.insertBefore(first, new MethodInsnNode(Opcodes.INVOKESTATIC, "Game/Client",
                    "messageHook", "(Ljava/lang/String;Ljava/lang/String;I)V"));
        }
    }
}

From source file:Client.JClassPatcher.java

License:Open Source License

private void patchRenderer(ClassNode node) {
    Logger.Info("Patching renderer (" + node.name + ".class)");

    Iterator<MethodNode> methodNodeList = node.methods.iterator();
    while (methodNodeList.hasNext()) {
        MethodNode methodNode = methodNodeList.next();

        // Renderer present hook
        if (methodNode.desc.equals("(Ljava/awt/Graphics;III)V")) {
            AbstractInsnNode findNode = methodNode.instructions.getFirst();
            FieldInsnNode imageNode = null;

            while (findNode.getOpcode() != Opcodes.POP) {
                findNode = findNode.getNext();
                if (findNode == null) {
                    Logger.Error("Unable to find present hook");
                    break;
                }/*from www . j  a v a  2  s  . co  m*/
            }

            while (findNode.getOpcode() != Opcodes.INVOKESPECIAL) {
                if (findNode.getOpcode() == Opcodes.GETFIELD)
                    imageNode = (FieldInsnNode) findNode;

                AbstractInsnNode prev = findNode.getPrevious();
                methodNode.instructions.remove(findNode);
                findNode = prev;
            }

            methodNode.instructions.insert(findNode, new MethodInsnNode(Opcodes.INVOKESTATIC, "Game/Renderer",
                    "present", "(Ljava/awt/Graphics;Ljava/awt/Image;)V", false));
            methodNode.instructions.insert(findNode,
                    new FieldInsnNode(Opcodes.GETFIELD, node.name, imageNode.name, imageNode.desc));
            methodNode.instructions.insert(findNode, new VarInsnNode(Opcodes.ALOAD, 0));
            methodNode.instructions.insert(findNode, new VarInsnNode(Opcodes.ALOAD, 1));
        } else if (methodNode.name.equals("a") && methodNode.desc.equals("(IILjava/lang/String;IIBI)V")) {
            AbstractInsnNode start = methodNode.instructions.getFirst();
            while (start != null) {
                if (start.getOpcode() == Opcodes.ALOAD && start.getNext().getOpcode() == Opcodes.ILOAD
                        && start.getNext().getNext().getOpcode() == Opcodes.INVOKEVIRTUAL
                        && start.getNext().getNext().getNext().getOpcode() == Opcodes.ISTORE) {
                    break;
                }

                start = start.getNext();
            }
            start = start.getPrevious();

            LabelNode finishLabel = ((JumpInsnNode) start.getPrevious().getPrevious()).label;
            LabelNode failLabel = new LabelNode();

            methodNode.instructions.insertBefore(start, new IntInsnNode(Opcodes.BIPUSH, 126));
            methodNode.instructions.insertBefore(start, new VarInsnNode(Opcodes.ALOAD, 3));
            methodNode.instructions.insertBefore(start, new VarInsnNode(Opcodes.ILOAD, 10));
            methodNode.instructions.insertBefore(start,
                    new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "java/lang/String", "charAt", "(I)C"));
            methodNode.instructions.insertBefore(start, new JumpInsnNode(Opcodes.IF_ICMPNE, failLabel));

            methodNode.instructions.insertBefore(start, new VarInsnNode(Opcodes.ILOAD, 10));
            methodNode.instructions.insertBefore(start, new InsnNode(Opcodes.ICONST_5));
            methodNode.instructions.insertBefore(start, new InsnNode(Opcodes.IADD));
            methodNode.instructions.insertBefore(start, new VarInsnNode(Opcodes.ALOAD, 3));
            methodNode.instructions.insertBefore(start,
                    new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "java/lang/String", "length", "()I"));
            methodNode.instructions.insertBefore(start, new JumpInsnNode(Opcodes.IF_ICMPGE, failLabel));

            methodNode.instructions.insertBefore(start, new IntInsnNode(Opcodes.BIPUSH, 126));
            methodNode.instructions.insertBefore(start, new VarInsnNode(Opcodes.ALOAD, 3));
            methodNode.instructions.insertBefore(start, new VarInsnNode(Opcodes.ILOAD, 10));
            methodNode.instructions.insertBefore(start, new InsnNode(Opcodes.ICONST_5));
            methodNode.instructions.insertBefore(start, new InsnNode(Opcodes.IADD));
            methodNode.instructions.insertBefore(start,
                    new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "java/lang/String", "charAt", "(I)C"));
            methodNode.instructions.insertBefore(start, new JumpInsnNode(Opcodes.IF_ICMPNE, failLabel));

            methodNode.instructions.insertBefore(start, new VarInsnNode(Opcodes.ALOAD, 3));
            methodNode.instructions.insertBefore(start, new VarInsnNode(Opcodes.ILOAD, 10));
            methodNode.instructions.insertBefore(start, new InsnNode(Opcodes.ICONST_1));
            methodNode.instructions.insertBefore(start, new InsnNode(Opcodes.IADD));
            methodNode.instructions.insertBefore(start, new VarInsnNode(Opcodes.ILOAD, 10));
            methodNode.instructions.insertBefore(start, new InsnNode(Opcodes.ICONST_5));
            methodNode.instructions.insertBefore(start, new InsnNode(Opcodes.IADD));
            methodNode.instructions.insertBefore(start, new MethodInsnNode(Opcodes.INVOKEVIRTUAL,
                    "java/lang/String", "substring", "(II)Ljava/lang/String;"));
            methodNode.instructions.insertBefore(start, new MethodInsnNode(Opcodes.INVOKESTATIC,
                    "java/lang/Integer", "parseInt", "(Ljava/lang/String;)I"));
            methodNode.instructions.insertBefore(start, new VarInsnNode(Opcodes.ISTORE, 4));
            methodNode.instructions.insertBefore(start, new IincInsnNode(10, 5));

            methodNode.instructions.insertBefore(start, new JumpInsnNode(Opcodes.GOTO, finishLabel));

            methodNode.instructions.insertBefore(start, failLabel);
        }
    }
}

From source file:com.android.ide.eclipse.apt.internal.analysis.InnerClassAnalyzer.java

License:Apache License

/**
 * Checks if a method of an inner class accesses the private content of an outer class (field or method)
 * @param methodNode/*from  w ww  .  j av  a  2 s . co  m*/
 * @param method
 * @return True if the outer access is confirmed, false otherwise.
 */
private boolean confirmParentClassAccess(final MethodNode methodNode, final MethodInsnNode method) {
    final String methodNodeName = methodNode.name;
    AbstractInsnNode prev = method.getPrevious();
    boolean result = false;
    while (!result) {
        if (methodNodeName.startsWith("<init>")) {
            if (prev.getOpcode() == Opcodes.ALOAD) {
                final VarInsnNode varInsn = (VarInsnNode) prev;
                result = varInsn.var == 1;
            }
        } else {
            if (prev.getOpcode() == Opcodes.GETFIELD) {
                final FieldInsnNode getField = (FieldInsnNode) prev;
                final String field = getField.owner + getField.name;
                final String testField = mInnerClass.name + "this$0";
                result = field.equals(testField);
            }
        }
        if (prev.getType() == AbstractInsnNode.LINE) {
            break;
        } else {
            prev = prev.getPrevious();
        }
    }
    return result;
}

From source file:com.android.tools.klint.checks.ControlFlowGraph.java

License:Apache License

/**
 * Creates a human readable version of the graph
 *
 * @param start the starting instruction, or null if not known or to use the
 *            first instruction//from  www .  j  a va2  s .  c  o  m
 * @return a string version of the graph
 */
@NonNull
public String toString(@Nullable Node start) {
    StringBuilder sb = new StringBuilder(400);

    AbstractInsnNode curr;
    if (start != null) {
        curr = start.instruction;
    } else {
        if (mNodeMap.isEmpty()) {
            return "<empty>";
        } else {
            curr = mNodeMap.keySet().iterator().next();
            while (curr.getPrevious() != null) {
                curr = curr.getPrevious();
            }
        }
    }

    while (curr != null) {
        Node node = mNodeMap.get(curr);
        if (node != null) {
            sb.append(node.toString(true));
        }
        curr = curr.getNext();
    }

    return sb.toString();
}

From source file:com.android.tools.klint.detector.api.ClassContext.java

License:Apache License

/**
 * Finds the line number closest to the given node
 *
 * @param node the instruction node to get a line number for
 * @return the closest line number, or -1 if not known
 *//*from w  w w  .  j  a  va 2s .  c  om*/
public static int findLineNumber(@NonNull AbstractInsnNode node) {
    AbstractInsnNode curr = node;

    // First search backwards
    while (curr != null) {
        if (curr.getType() == AbstractInsnNode.LINE) {
            return ((LineNumberNode) curr).line;
        }
        curr = curr.getPrevious();
    }

    // Then search forwards
    curr = node;
    while (curr != null) {
        if (curr.getType() == AbstractInsnNode.LINE) {
            return ((LineNumberNode) curr).line;
        }
        curr = curr.getNext();
    }

    return -1;
}

From source file:com.android.tools.klint.detector.api.LintUtils.java

License:Apache License

/**
 * Returns the previous instruction prior to the given node, ignoring label
 * and line number nodes./*from w  ww .  j a v  a2s  .  c  o  m*/
 *
 * @param node the node to look up the previous instruction for
 * @return the previous instruction, or null if no previous node was found
 */
@Nullable
public static AbstractInsnNode getPrevInstruction(@NonNull AbstractInsnNode node) {
    AbstractInsnNode prev = node;
    while (true) {
        prev = prev.getPrevious();
        if (prev == null) {
            return null;
        } else {
            int type = prev.getType();
            if (type != AbstractInsnNode.LINE && type != AbstractInsnNode.LABEL
                    && type != AbstractInsnNode.FRAME) {
                return prev;
            }
        }
    }
}

From source file:com.android.tools.lint.checks.WakelockDetector.java

License:Apache License

/** Search from the given node towards the target; return false if we reach
 * an exit point such as a return or a call on the way there that is not within
 * a try/catch clause.// ww w  . j  av  a2s . c  o m
 *
 * @param node the current node
 * @return true if the target was reached
 *    XXX RETURN VALUES ARE WRONG AS OF RIGHT NOW
 */
protected int dfs(ControlFlowGraph.Node node) {
    AbstractInsnNode instruction = node.instruction;
    if (instruction.getType() == AbstractInsnNode.JUMP_INSN) {
        int opcode = instruction.getOpcode();
        if (opcode == Opcodes.RETURN || opcode == Opcodes.ARETURN || opcode == Opcodes.LRETURN
                || opcode == Opcodes.IRETURN || opcode == Opcodes.DRETURN || opcode == Opcodes.FRETURN
                || opcode == Opcodes.ATHROW) {
            if (DEBUG) {
                System.out.println("Found exit via explicit return: " //$NON-NLS-1$
                        + node.toString(false));
            }
            return SEEN_RETURN;
        }
    }

    if (!DEBUG) {
        // There are no cycles, so no *NEED* for this, though it does avoid
        // researching shared labels. However, it makes debugging harder (no re-entry)
        // so this is only done when debugging is off
        if (node.visit != 0) {
            return 0;
        }
        node.visit = 1;
    }

    // Look for the target. This is any method call node which is a release on the
    // lock (later also check it's the same instance, though that's harder).
    // This is because finally blocks tend to be inlined so from a single try/catch/finally
    // with a release() in the finally, the bytecode can contain multiple repeated
    // (inlined) release() calls.
    if (instruction.getType() == AbstractInsnNode.METHOD_INSN) {
        MethodInsnNode method = (MethodInsnNode) instruction;
        if (method.name.equals(RELEASE_METHOD) && method.owner.equals(WAKELOCK_OWNER)) {
            return SEEN_TARGET;
        } else if (method.name.equals(ACQUIRE_METHOD) && method.owner.equals(WAKELOCK_OWNER)) {
            // OK
        } else if (method.name.equals(IS_HELD_METHOD) && method.owner.equals(WAKELOCK_OWNER)) {
            // OK
        } else {
            // Some non acquire/release method call: if this is not associated with a
            // try-catch block, it would mean the exception would exit the method,
            // which would be an error
            if (node.exceptions == null || node.exceptions.isEmpty()) {
                // Look up the corresponding frame, if any
                AbstractInsnNode curr = method.getPrevious();
                boolean foundFrame = false;
                while (curr != null) {
                    if (curr.getType() == AbstractInsnNode.FRAME) {
                        foundFrame = true;
                        break;
                    }
                    curr = curr.getPrevious();
                }

                if (!foundFrame) {
                    if (DEBUG) {
                        System.out.println("Found exit via unguarded method call: " //$NON-NLS-1$
                                + node.toString(false));
                    }
                    return SEEN_RETURN;
                }
            }
        }
    }

    // if (node.instruction is a call, and the call is not caught by
    // a try/catch block (provided the release is not inside the try/catch block)
    // then return false
    int status = 0;

    boolean implicitReturn = true;
    List<Node> successors = node.successors;
    List<Node> exceptions = node.exceptions;
    if (exceptions != null) {
        if (!exceptions.isEmpty()) {
            implicitReturn = false;
        }
        for (Node successor : exceptions) {
            status = dfs(successor) | status;
            if ((status & SEEN_RETURN) != 0) {
                if (DEBUG) {
                    System.out.println("Found exit via exception: " //$NON-NLS-1$
                            + node.toString(false));
                }
                return status;
            }
        }

        if (status != 0) {
            status |= SEEN_EXCEPTION;
        }
    }

    if (successors != null) {
        if (!successors.isEmpty()) {
            implicitReturn = false;
            if (successors.size() > 1) {
                status |= SEEN_BRANCH;
            }
        }
        for (Node successor : successors) {
            status = dfs(successor) | status;
            if ((status & SEEN_RETURN) != 0) {
                if (DEBUG) {
                    System.out.println("Found exit via branches: " //$NON-NLS-1$
                            + node.toString(false));
                }
                return status;
            }
        }
    }

    if (implicitReturn) {
        status |= SEEN_RETURN;
        if (DEBUG) {
            System.out.println("Found exit: via implicit return: " //$NON-NLS-1$
                    + node.toString(false));
        }
    }

    return status;
}

From source file:com.friz.instruction.utility.InstructionUtil.java

License:Open Source License

/**
 * Finds the previous non-psuedo node following the specified node.
 * //from ww  w .  j a v  a  2s  .c o  m
 * @param node
 *            The node.
 * @return The previous non-psuedo node, or {@code null} if the start of the
 *         instruction list is reached.
 */
public static AbstractInsnNode previousNonPsuedoNode(AbstractInsnNode node) {
    while ((node = node.getPrevious()) != null && node.getOpcode() == -1)
        ;
    return node;
}

From source file:com.friz.instruction.utility.InstructionUtil.java

License:Open Source License

/**
 * Finds the previous non-psuedo node following the specified node.
 * /*from   w  w w .j av a 2  s  . c o m*/
 * @param node
 *            The node.
 * @return The previous non-psuedo node, or {@code null} if the start of the
 *         instruction list is reached.
 */
public static AbstractInsnNode previousNonPsuedoNode(AbstractInsnNode node, int opcode) {
    while ((node = node.getPrevious()) != null && node.getOpcode() == opcode)
        ;
    return node;
}