init

src/main/java/com/novitechie/LoadClassRule.java

@@ -0,0 +1,9 @@
+package com.novitechie;
+
+public class LoadClassRule {
+    public static void check(String name) throws Exception {
+        if (name.startsWith("com.janetfilter")) {
+            throw new ClassNotFoundException(name);
+        }
+    }
+}

src/main/java/com/novitechie/PluginClassLoaderTransformer.java

@@ -0,0 +1,37 @@
+package com.novitechie;
+
+import com.janetfilter.core.plugin.MyTransformer;
+import jdk.internal.org.objectweb.asm.*;
+import jdk.internal.org.objectweb.asm.commons.AdviceAdapter;
+
+import static jdk.internal.org.objectweb.asm.Opcodes.ASM5;
+
+public class PluginClassLoaderTransformer implements MyTransformer {
+    @Override
+    public String getHookClassName() {
+        return "com/intellij/ide/plugins/cl/PluginClassLoader";
+    }
+
+    @Override
+    public byte[] transform(String className, byte[] classBytes, int order) throws Exception {
+        ClassReader cr = new ClassReader(classBytes);
+        ClassWriter cw = new ClassWriter(cr, ClassWriter.COMPUTE_FRAMES);
+        cr.accept(new ClassVisitor(ASM5, cw) {
+            @Override
+            public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
+                if (name.equals("loadClass")) {
+                    MethodVisitor mv = super.visitMethod(access, name, desc, signature, exceptions);
+                    return new AdviceAdapter(api, mv, access, name, desc) {
+                        @Override
+                        protected void onMethodEnter() {
+                            mv.visitVarInsn(ALOAD, 1);
+                            mv.visitMethodInsn(INVOKESTATIC, "com/novitechie/LoadClassRule", "check", "(Ljava/lang/String;)V", false);
+                        }
+                    };
+                }
+                return super.visitMethod(access, name, desc, signature, exceptions);
+            }
+        }, 6);
+        return cw.toByteArray();
+    }
+}

src/main/java/com/novitechie/PrivacyPlugin.java

@@ -0,0 +1,24 @@
+package com.novitechie;
+
+import com.janetfilter.core.plugin.MyTransformer;
+import com.janetfilter.core.plugin.PluginEntry;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class PrivacyPlugin  implements PluginEntry {
+    @Override
+    public String getName() {
+        return "PRIVACY";
+    }
+
+    @Override
+    public String getAuthor() {
+        return "novice.li";
+    }
+
+    @Override
+    public List<MyTransformer> getTransformers() {
+        return Arrays.asList(new VMOptionsTransformer(),new PluginClassLoaderTransformer());
+    }
+}

src/main/java/com/novitechie/StackTraceRule.java

@@ -0,0 +1,13 @@
+package com.novitechie;
+
+public class StackTraceRule {
+    public static boolean check() {
+        RuntimeException e = new RuntimeException();
+        for (StackTraceElement stackTraceElement : e.getStackTrace()) {
+            if (stackTraceElement.getFileName() == null) {
+                return true;
+            }
+        }
+        return false;
+    }
+}

src/main/java/com/novitechie/VMOptionsTransformer.java

@@ -0,0 +1,41 @@
+package com.novitechie;
+
+import com.janetfilter.core.plugin.MyTransformer;
+import jdk.internal.org.objectweb.asm.*;
+import jdk.internal.org.objectweb.asm.commons.AdviceAdapter;
+
+import static jdk.internal.org.objectweb.asm.Opcodes.ASM5;
+
+public class VMOptionsTransformer implements MyTransformer {
+    @Override
+    public String getHookClassName() {
+        return "com/intellij/diagnostic/VMOptions";
+    }
+
+    @Override
+    public byte[] transform(String className, byte[] classBytes, int order) throws Exception {
+        ClassReader cr = new ClassReader(classBytes);
+        ClassWriter cw = new ClassWriter(cr, ClassWriter.COMPUTE_FRAMES);
+        cr.accept(new ClassVisitor(ASM5, cw) {
+            @Override
+            public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
+                if (name.equals("getUserOptionsFile")) {
+                    MethodVisitor mv = super.visitMethod(access, name, desc, signature, exceptions);
+                    return new AdviceAdapter(api, mv, access, name, desc) {
+                        @Override
+                        protected void onMethodEnter() {
+                            mv.visitMethodInsn(INVOKESTATIC, "com/novitechie/StackTraceRule", "check", "()Z", false);
+                            Label l0 = new Label();
+                            mv.visitJumpInsn(IFEQ, l0);
+                            mv.visitInsn(ACONST_NULL);
+                            mv.visitInsn(ARETURN);
+                            mv.visitLabel(l0);
+                        }
+                    };
+                }
+                return super.visitMethod(access, name, desc, signature, exceptions);
+            }
+        }, 6);
+        return cw.toByteArray();
+    }
+}