Add XposedBridge.removeFinalFlagNative()

jackyglony · Oct 9, 2017 · f2a7379 · f2a7379
1 parent 0307d5c
commit f2a7379
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Showing 4 changed files with 18 additions and 0 deletions.
diff --git a/libxposed_art.cpp b/libxposed_art.cpp
@@ -145,6 +145,15 @@ jobject XposedBridge_cloneToSubclassNative(JNIEnv* env, jclass, jobject javaObje
     return soa.AddLocalReference<jobject>(dest);
 }
 
+void XposedBridge_removeFinalFlagNative(JNIEnv* env, jclass, jclass javaClazz) {
+    ScopedObjectAccess soa(env);
+    mirror::Class* clazz = soa.Decode<mirror::Class*>(javaClazz);
+    uint32_t flags = clazz->GetAccessFlags();
+    if ((flags & kAccFinal) != 0) {
+        clazz->SetAccessFlags(flags & ~kAccFinal);
+    }
+}
+
 jint XposedBridge_getRuntime(JNIEnv*, jclass) {
     return 2; // RUNTIME_ART
 }

diff --git a/libxposed_common.cpp b/libxposed_common.cpp
@@ -355,6 +355,7 @@ int register_natives_XposedBridge(JNIEnv* env, jclass clazz) {
         NATIVE_METHOD(XposedBridge, setObjectClassNative, "(Ljava/lang/Object;Ljava/lang/Class;)V"),
         NATIVE_METHOD(XposedBridge, dumpObjectNative, "(Ljava/lang/Object;)V"),
         NATIVE_METHOD(XposedBridge, cloneToSubclassNative, "(Ljava/lang/Object;Ljava/lang/Class;)Ljava/lang/Object;"),
+        NATIVE_METHOD(XposedBridge, removeFinalFlagNative, "(Ljava/lang/Class;)V"),
 #if PLATFORM_SDK_VERSION >= 21
         NATIVE_METHOD(XposedBridge, invokeOriginalMethodNative,
             "!(Ljava/lang/reflect/Member;I[Ljava/lang/Class;Ljava/lang/Class;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;"),

diff --git a/libxposed_common.h b/libxposed_common.h
@@ -43,6 +43,7 @@ extern void    XposedBridge_hookMethodNative(JNIEnv* env, jclass clazz, jobject
 extern void    XposedBridge_setObjectClassNative(JNIEnv* env, jclass clazz, jobject objIndirect, jclass clzIndirect);
 extern jobject XposedBridge_cloneToSubclassNative(JNIEnv* env, jclass clazz, jobject objIndirect, jclass clzIndirect);
 extern void    XposedBridge_dumpObjectNative(JNIEnv* env, jclass clazz, jobject objIndirect);
+extern void    XposedBridge_removeFinalFlagNative(JNIEnv* env, jclass clazz, jclass javaClazz);
 
 #if PLATFORM_SDK_VERSION >= 21
 extern jobject XposedBridge_invokeOriginalMethodNative(JNIEnv* env, jclass, jobject javaMethod, jint, jobjectArray,

diff --git a/libxposed_dalvik.cpp b/libxposed_dalvik.cpp
@@ -347,6 +347,13 @@ jobject XposedBridge_cloneToSubclassNative(JNIEnv* env, jclass clazz, jobject ob
     return copyIndirect;
 }
 
+void XposedBridge_removeFinalFlagNative(JNIEnv* env, jclass, jclass javaClazz) {
+    ClassObject* clazz = (ClassObject*) dvmDecodeIndirectRef(dvmThreadSelf(), javaClazz);
+    if (dvmIsFinalClass(clazz)) {
+        clazz->accessFlags &= ~ACC_FINAL;
+    }
+}
+
 jint XposedBridge_getRuntime(JNIEnv* env, jclass clazz) {
     return 1; // RUNTIME_DALVIK
 }