novice
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plugin-privacy
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finish

This commit is contained in:
novice.li 2024-02-25 13:38:59 +08:00
parent 439a127799
commit 92b5ae69d1
6 changed files with 229 additions and 45 deletions
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1
src/main/java/com/novitechie/LoadClassRule.java
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@ -3,6 +3,7 @@ package com.novitechie;
public class LoadClassRule {
public static void check(String name) throws Exception {
if (name.startsWith("com.janetfilter")) {
System.out.println("----------------------"+name);
throw new ClassNotFoundException(name);
}
}

40
src/main/java/com/novitechie/PluginClassLoaderTransformer.java
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@ -1,10 +1,11 @@
package com.novitechie;
import com.janetfilter.core.plugin.MyTransformer;
import jdk.internal.org.objectweb.asm.*;
import jdk.internal.org.objectweb.asm.commons.AdviceAdapter;
import jdk.internal.org.objectweb.asm.ClassReader;
import jdk.internal.org.objectweb.asm.ClassWriter;
import jdk.internal.org.objectweb.asm.tree.*;
import static jdk.internal.org.objectweb.asm.Opcodes.ASM5;
import static jdk.internal.org.objectweb.asm.Opcodes.*;
public class PluginClassLoaderTransformer implements MyTransformer {
@Override
@ -14,24 +15,19 @@ public class PluginClassLoaderTransformer implements MyTransformer {
@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);
ClassReader reader = new ClassReader(classBytes);
ClassNode node = new ClassNode(ASM5);
reader.accept(node, 0);
for (MethodNode m : node.methods) {
if ("loadClass".equals(m.name)) {
InsnList list = new InsnList();
list.add(new VarInsnNode(ALOAD, 1));
list.add(new MethodInsnNode(INVOKESTATIC, "com/novitechie/LoadClassRule", "check", "(Ljava/lang/String;)V", false));
m.instructions.insert(list);
}
}, 6);
return cw.toByteArray();
}
ClassWriter writer = new SafeClassWriter(null,null,ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
node.accept(writer);
return writer.toByteArray();
}
}
}

4
src/main/java/com/novitechie/PrivacyPlugin.java
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@ -7,6 +7,10 @@ import java.util.Arrays;
import java.util.List;
public class PrivacyPlugin implements PluginEntry {
static {
System.out.println("-------------PrivacyPlugin------------------");
}
@Override
public String getName() {
return "PRIVACY";

186
src/main/java/com/novitechie/SafeClassWriter.java Normal file
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@ -0,0 +1,186 @@
/***
* Copyright (c) 2000-2011 INRIA, France Telecom
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.novitechie;
import java.io.IOException;
import java.io.InputStream;
import jdk.internal.org.objectweb.asm.ClassReader;
import jdk.internal.org.objectweb.asm.ClassWriter;
import jdk.internal.org.objectweb.asm.Opcodes;
/**
* A ClassWriter that computes the common super class of two classes without
* actually loading them with a ClassLoader.
*
* @author Eric Bruneton
*/
public class SafeClassWriter extends ClassWriter {
private final ClassLoader loader;
public SafeClassWriter(ClassReader cr, ClassLoader loader, final int flags) {
super(cr, flags);
this.loader = loader != null ? loader : ClassLoader.getSystemClassLoader();
}
@Override
protected String getCommonSuperClass(final String type1, final String type2) {
try {
ClassReader info1 = typeInfo(type1);
ClassReader info2 = typeInfo(type2);
if ((info1.getAccess() & Opcodes.ACC_INTERFACE) != 0) {
if (typeImplements(type2, info2, type1)) {
return type1;
} else {
return "java/lang/Object";
}
}
if ((info2.getAccess() & Opcodes.ACC_INTERFACE) != 0) {
if (typeImplements(type1, info1, type2)) {
return type2;
} else {
return "java/lang/Object";
}
}
StringBuilder b1 = typeAncestors(type1, info1);
StringBuilder b2 = typeAncestors(type2, info2);
String result = "java/lang/Object";
int end1 = b1.length();
int end2 = b2.length();
while (true) {
int start1 = b1.lastIndexOf(";", end1 - 1);
int start2 = b2.lastIndexOf(";", end2 - 1);
if (start1 != -1 && start2 != -1
&& end1 - start1 == end2 - start2) {
String p1 = b1.substring(start1 + 1, end1);
String p2 = b2.substring(start2 + 1, end2);
if (p1.equals(p2)) {
result = p1;
end1 = start1;
end2 = start2;
} else {
return result;
}
} else {
return result;
}
}
} catch (IOException e) {
throw new RuntimeException(e.toString());
}
}
/**
* Returns the internal names of the ancestor classes of the given type.
*
* @param type
* the internal name of a class or interface.
* @param info
* the ClassReader corresponding to 'type'.
* @return a StringBuilder containing the ancestor classes of 'type',
* separated by ';'. The returned string has the following format:
* ";type1;type2 ... ;typeN", where type1 is 'type', and typeN is a
* direct subclass of Object. If 'type' is Object, the returned
* string is empty.
* @throws IOException
* if the bytecode of 'type' or of some of its ancestor class
* cannot be loaded.
*/
private StringBuilder typeAncestors(String type, ClassReader info)
throws IOException {
StringBuilder b = new StringBuilder();
while (!"java/lang/Object".equals(type)) {
b.append(';').append(type);
type = info.getSuperName();
info = typeInfo(type);
}
return b;
}
/**
* Returns true if the given type implements the given interface.
*
* @param type
* the internal name of a class or interface.
* @param info
* the ClassReader corresponding to 'type'.
* @param itf
* the internal name of a interface.
* @return true if 'type' implements directly or indirectly 'itf'
* @throws IOException
* if the bytecode of 'type' or of some of its ancestor class
* cannot be loaded.
*/
private boolean typeImplements(String type, ClassReader info, String itf)
throws IOException {
while (!"java/lang/Object".equals(type)) {
String[] itfs = info.getInterfaces();
for (int i = 0; i < itfs.length; ++i) {
if (itfs[i].equals(itf)) {
return true;
}
}
for (int i = 0; i < itfs.length; ++i) {
if (typeImplements(itfs[i], typeInfo(itfs[i]), itf)) {
return true;
}
}
type = info.getSuperName();
info = typeInfo(type);
}
return false;
}
/**
* Returns a ClassReader corresponding to the given class or interface.
*
* @param type
* the internal name of a class or interface.
* @return the ClassReader corresponding to 'type'.
* @throws IOException
* if the bytecode of 'type' cannot be loaded.
*/
private ClassReader typeInfo(final String type) throws IOException {
String resource = type + ".class";
InputStream is = loader.getResourceAsStream(resource);
if (is == null) {
throw new IOException("Cannot create ClassReader for type " + type);
}
try {
return new ClassReader(is);
} finally {
is.close();
}
}
}

1
src/main/java/com/novitechie/StackTraceRule.java
View File

@ -2,6 +2,7 @@ package com.novitechie;
public class StackTraceRule {
public static boolean check() {
System.out.println("------------------StackTraceRule");
RuntimeException e = new RuntimeException();
for (StackTraceElement stackTraceElement : e.getStackTrace()) {
if (stackTraceElement.getFileName() == null) {

42
src/main/java/com/novitechie/VMOptionsTransformer.java
View File

@ -3,8 +3,9 @@ package com.novitechie;
import com.janetfilter.core.plugin.MyTransformer;
import jdk.internal.org.objectweb.asm.*;
import jdk.internal.org.objectweb.asm.commons.AdviceAdapter;
import jdk.internal.org.objectweb.asm.tree.*;
import static jdk.internal.org.objectweb.asm.Opcodes.ASM5;
import static jdk.internal.org.objectweb.asm.Opcodes.*;
public class VMOptionsTransformer implements MyTransformer {
@Override
@ -14,28 +15,23 @@ public class VMOptionsTransformer implements MyTransformer {
@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);
ClassReader reader = new ClassReader(classBytes);
ClassNode node = new ClassNode(ASM5);
reader.accept(node, 0);
for (MethodNode m : node.methods) {
if ("getUserOptionsFile".equals(m.name)) {
InsnList list = new InsnList();
list.add(new MethodInsnNode(INVOKESTATIC, "com/novitechie/StackTraceRule", "check", "()Z", false));
LabelNode labelNode = new LabelNode();
list.add(new JumpInsnNode(IFEQ,labelNode));
list.add(new InsnNode(ACONST_NULL));
list.add(new InsnNode(ARETURN));
list.add(labelNode);
m.instructions.insert(list);
}
}, 6);
return cw.toByteArray();
}
ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
node.accept(writer);
return writer.toByteArray();
}
}