39 lines
1.5 KiB
Java
39 lines
1.5 KiB
Java
package com.novitechie;
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import com.janetfilter.core.plugin.MyTransformer;
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import jdk.internal.org.objectweb.asm.ClassReader;
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import jdk.internal.org.objectweb.asm.ClassWriter;
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import jdk.internal.org.objectweb.asm.tree.*;
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import static jdk.internal.org.objectweb.asm.Opcodes.*;
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public class LicensingFacadeTransformer implements MyTransformer {
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@Override
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public String getHookClassName() {
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return "com/intellij/ui/LicensingFacade";
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}
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@Override
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public byte[] transform(String className, byte[] classBytes, int order) throws Exception {
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ClassReader reader = new ClassReader(classBytes);
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ClassNode node = new ClassNode(ASM5);
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reader.accept(node, 0);
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for (MethodNode m : node.methods) {
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if ("getLicenseExpirationDate".equals(m.name)) {
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InsnList list = new InsnList();
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LabelNode L0 = new LabelNode();
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list.add(new MethodInsnNode(INVOKESTATIC, "com/novitechie/rules/StackTraceRule", "hook", "()Ljava/util/Date;", false));
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list.add(new InsnNode(DUP));
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list.add(new JumpInsnNode(IFNULL, L0));
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list.add(new InsnNode(ARETURN));
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list.add(L0);
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list.add(new InsnNode(POP));
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m.instructions.insert(list);
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}
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}
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ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
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node.accept(writer);
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return writer.toByteArray();
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}
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}
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