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227 changes: 227 additions & 0 deletions
227
src/main/java/me/n1ar4/clazz/obfuscator/asm/StringEncryptChanger.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,227 @@ | ||
| package me.n1ar4.clazz.obfuscator.asm; | ||
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| import me.n1ar4.clazz.obfuscator.Const; | ||
| import me.n1ar4.clazz.obfuscator.core.ObfEnv; | ||
| import me.n1ar4.clazz.obfuscator.transform.StringArrayTransformer; | ||
| import me.n1ar4.clazz.obfuscator.utils.AESUtil; | ||
| import me.n1ar4.templates.AESTemplates; | ||
| import org.objectweb.asm.*; | ||
| import sun.invoke.util.VerifyAccess; | ||
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|
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| public class StringEncryptChanger extends ClassVisitor { | ||
| private String className; | ||
| private final String aesKey; | ||
| private final String aesDecName; | ||
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| public StringEncryptChanger(ClassVisitor classVisitor, String aesKey, String aesDecName) { | ||
| super(Const.ASMVersion, classVisitor); | ||
| this.aesKey = aesKey; | ||
| this.aesDecName = aesDecName; | ||
| } | ||
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| @Override | ||
| public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) { | ||
| this.className = name; | ||
| super.visit(version, access, name, signature, superName, interfaces); | ||
| } | ||
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| @Override | ||
| public MethodVisitor visitMethod(int access, String name, String descriptor, String signature, String[] exceptions) { | ||
| MethodVisitor mv = super.visitMethod(access, name, descriptor, signature, exceptions); | ||
| return new StringEncryptMethodAdapter(mv, className, aesKey, aesDecName); | ||
| } | ||
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| @Override | ||
| public void visitEnd() { | ||
| AESUtil.addAesDecodeCode(cv, this.aesDecName); | ||
| super.visitEnd(); | ||
| } | ||
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| static class StringEncryptMethodAdapter extends MethodVisitor { | ||
| private final String className; | ||
| private final String aesKey; | ||
| private final String aesDecName; | ||
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| StringEncryptMethodAdapter(MethodVisitor mv, String name, String aesKey, String aesDecName) { | ||
| super(Const.ASMVersion, mv); | ||
| this.className = name; | ||
| this.aesKey = aesKey; | ||
| this.aesDecName = aesDecName; | ||
| } | ||
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| @Override | ||
| public void visitMethodInsn(int opcode, String owner, String name, String descriptor, boolean isInterface) { | ||
| super.visitMethodInsn(opcode, owner, name, descriptor, isInterface); | ||
| } | ||
|
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| @Override | ||
| public void visitFieldInsn(int opcode, String owner, String name, String descriptor) { | ||
| super.visitFieldInsn(opcode, owner, name, descriptor); | ||
| } | ||
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| @Override | ||
| public void visitTypeInsn(int opcode, String type) { | ||
| super.visitTypeInsn(opcode, type); | ||
| } | ||
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| @Override | ||
| public void visitAttribute(Attribute attribute) { | ||
| super.visitAttribute(attribute); | ||
| } | ||
|
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| @Override | ||
| public AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, String descriptor, boolean visible) { | ||
| return super.visitTypeAnnotation(typeRef, typePath, descriptor, visible); | ||
| } | ||
|
|
||
| @Override | ||
| public MethodVisitor getDelegate() { | ||
| return super.getDelegate(); | ||
| } | ||
|
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| @Override | ||
| public void visitEnd() { | ||
| super.visitEnd(); | ||
| } | ||
|
|
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| @Override | ||
| public AnnotationVisitor visitAnnotation(String descriptor, boolean visible) { | ||
| return super.visitAnnotation(descriptor, visible); | ||
| } | ||
|
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| @Override | ||
| public AnnotationVisitor visitAnnotationDefault() { | ||
| return super.visitAnnotationDefault(); | ||
| } | ||
|
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| @Override | ||
| public AnnotationVisitor visitInsnAnnotation(int typeRef, TypePath typePath, String descriptor, boolean visible) { | ||
| return super.visitInsnAnnotation(typeRef, typePath, descriptor, visible); | ||
| } | ||
|
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| @Override | ||
| public AnnotationVisitor visitLocalVariableAnnotation(int typeRef, TypePath typePath, Label[] start, Label[] end, int[] index, String descriptor, boolean visible) { | ||
| return super.visitLocalVariableAnnotation(typeRef, typePath, start, end, index, descriptor, visible); | ||
| } | ||
|
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| @Override | ||
| public AnnotationVisitor visitParameterAnnotation(int parameter, String descriptor, boolean visible) { | ||
| return super.visitParameterAnnotation(parameter, descriptor, visible); | ||
| } | ||
|
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| @Override | ||
| public AnnotationVisitor visitTryCatchAnnotation(int typeRef, TypePath typePath, String descriptor, boolean visible) { | ||
| return super.visitTryCatchAnnotation(typeRef, typePath, descriptor, visible); | ||
| } | ||
|
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||
| @Override | ||
| public void visitAnnotableParameterCount(int parameterCount, boolean visible) { | ||
| super.visitAnnotableParameterCount(parameterCount, visible); | ||
| } | ||
|
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| @Override | ||
| public void visitCode() { | ||
| super.visitCode(); | ||
| } | ||
|
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| @Override | ||
| public void visitFrame(int type, int numLocal, Object[] local, int numStack, Object[] stack) { | ||
| super.visitFrame(type, numLocal, local, numStack, stack); | ||
| } | ||
|
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||
| @Override | ||
| public void visitIincInsn(int varIndex, int increment) { | ||
| super.visitIincInsn(varIndex, increment); | ||
| } | ||
|
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| @Override | ||
| public void visitInsn(int opcode) { | ||
| super.visitInsn(opcode); | ||
| } | ||
|
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| @Override | ||
| public void visitIntInsn(int opcode, int operand) { | ||
| super.visitIntInsn(opcode, operand); | ||
| } | ||
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| @Override | ||
| public void visitInvokeDynamicInsn(String name, String descriptor, Handle bootstrapMethodHandle, Object... bootstrapMethodArguments) { | ||
| super.visitInvokeDynamicInsn(name, descriptor, bootstrapMethodHandle, bootstrapMethodArguments); | ||
| } | ||
|
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| @Override | ||
| public void visitJumpInsn(int opcode, Label label) { | ||
| super.visitJumpInsn(opcode, label); | ||
| } | ||
|
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| @Override | ||
| public void visitLabel(Label label) { | ||
| super.visitLabel(label); | ||
| } | ||
|
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| @Override | ||
| public void visitLdcInsn(Object value) { | ||
| if (value instanceof String) { | ||
| try { | ||
| mv.visitLdcInsn(AESTemplates.encrypt((String) value, this.aesKey)); | ||
| mv.visitLdcInsn(this.aesKey); | ||
| mv.visitMethodInsn( | ||
| Opcodes.INVOKESTATIC, | ||
| className, | ||
| this.aesDecName, | ||
| "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;", | ||
| false); | ||
| } catch (Exception ignored) { | ||
| super.visitLdcInsn(value); | ||
| } | ||
| } else { | ||
| super.visitLdcInsn(value); | ||
| } | ||
| } | ||
|
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| @Override | ||
| public void visitLineNumber(int line, Label start) { | ||
| super.visitLineNumber(line, start); | ||
| } | ||
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| @Override | ||
| public void visitLocalVariable(String name, String descriptor, String signature, Label start, Label end, int index) { | ||
| super.visitLocalVariable(name, descriptor, signature, start, end, index); | ||
| } | ||
|
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| @Override | ||
| public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels) { | ||
| super.visitLookupSwitchInsn(dflt, keys, labels); | ||
| } | ||
|
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| @Override | ||
| public void visitMaxs(int maxStack, int maxLocals) { | ||
| super.visitMaxs(maxStack, maxLocals); | ||
| } | ||
|
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| @Override | ||
| public void visitMultiANewArrayInsn(String descriptor, int numDimensions) { | ||
| super.visitMultiANewArrayInsn(descriptor, numDimensions); | ||
| } | ||
|
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| @Override | ||
| public void visitParameter(String name, int access) { | ||
| super.visitParameter(name, access); | ||
| } | ||
|
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| @Override | ||
| public void visitTableSwitchInsn(int min, int max, Label dflt, Label... labels) { | ||
| super.visitTableSwitchInsn(min, max, dflt, labels); | ||
| } | ||
|
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| @Override | ||
| public void visitTryCatchBlock(Label start, Label end, Label handler, String type) { | ||
| super.visitTryCatchBlock(start, end, handler, type); | ||
| } | ||
|
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||
| @Override | ||
| public void visitVarInsn(int opcode, int varIndex) { | ||
| super.visitVarInsn(opcode, varIndex); | ||
| } | ||
| } | ||
| } |
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