native hook

[neervanbiqs]

extern "C" [[gnu::visibility("default")]] [[gnu::used]]
jint JNI_OnLoad(JavaVM *jvm, void*) {
    JNIEnv *env = nullptr;
    jvm->GetEnv((void **)&env, JNI_VERSION_1_6);
    hook_func((void *)env->functions->FindClass, (void *)fake_FindClass, (void **)&backup_FindClass);
    return JNI_VERSION_1_6;
}

We can get JNIEnv after JNI_OnLoad. But can we get JNIEnv after on_library_loaded ? I need to hook app's native lib and call java methods of my xposed module from native code

[neervanbiqs]

After the JNI_OnLoad function has been called, I copied the JNIEnv *env variable to the global variable *envGlobal. Then from the on_library_loaded function I try to find the class of my module using envGlobal, but I get an error. Although the class can be successfully found from the JNI_OnLoad function
Also I can't invoke even generic java method via envGlobal (although can find the class)