fixes JSR/RET for old jar when hook class

Author: lostsnow

dongtai-core/src/main/java/io/dongtai/iast/core/bytecode/IastClassFileTransformer.java

@@ -119,7 +119,9 @@ public byte[] transform(final ClassLoader loader,
                     || internalClassName.startsWith("io/dongtai/")
                     || internalClassName.startsWith("com/secnium/iast/")
                     || internalClassName.startsWith("java/lang/iast/")
-                    || internalClassName.startsWith("cn/huoxian/iast/")) {
+                    || internalClassName.startsWith("cn/huoxian/iast/")
+                    || internalClassName.startsWith("META-INF/")
+                    || "module-info".equals(internalClassName)) {
                 return null;
             }
 

dongtai-core/src/main/java/io/dongtai/iast/core/bytecode/enhance/plugin/core/DispatchClassPlugin.java

@@ -36,12 +36,17 @@ public ClassVisitor dispatch(ClassVisitor classVisitor, ClassContext classContex
         }
 
         classContext.setMatchedClassName(matchedClassName);
-        return new ClassVisit(classVisitor, classContext, policy);
+        ClassVisit cv = new ClassVisit(classVisitor, classContext, policy);
+        if (cv.isNeedTransform()) {
+            return cv;
+        }
+        return classVisitor;
     }
 
     public class ClassVisit extends AbstractClassVisitor {
         private int classVersion;
         private final MethodAdapter[] methodAdapters;
+        private boolean needTransform;
 
         ClassVisit(ClassVisitor classVisitor, ClassContext classContext, Policy policy) {
             super(classVisitor, classContext, policy);
@@ -52,6 +57,10 @@ public class ClassVisit extends AbstractClassVisitor {
             };
         }
 
+        public boolean isNeedTransform() {
+            return this.needTransform;
+        }
+
         @Override
         public void visit(int version, int access, String name, String signature, String superName,
                           String[] interfaces) {
@@ -88,6 +97,7 @@ public MethodVisitor visitMethod(final int access, final String name, final Stri
             }
 
             if (methodIsTransformed) {
+                this.needTransform = true;
                 DongTaiLog.trace("rewrite method {} for listener[class={}]", matchedSignature, context.getClassName());
             }