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Set accessible for backup

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This commit is contained in:
LoveSy 2022-02-18 14:34:11 +08:00
parent a704b3b5b5
commit 0119b4293d
2 changed files with 15 additions and 2 deletions
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2
library/jni/include/lsplant.hpp
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@ -73,7 +73,7 @@ bool Init(JNIEnv *env, const InitInfo &info);
/// conflict.
/// \param[in] callback_method The callback method to the \p hooker_object is used to replace the
/// \p target_method. Whenever the \p target_method is invoked, the \p callback_method will be
/// linked instead of the original \p target_method. The signature of the \p callback_method must
/// invoked instead of the original \p target_method. The signature of the \p callback_method must
/// be:<br>
/// \code{.java}
/// public Object callback_method(Object []args)

15
library/jni/lsplant.cc
View File

@ -75,6 +75,7 @@ jmethodID class_is_proxy = nullptr;
jclass in_memory_class_loader = nullptr;
jmethodID in_memory_class_loader_init = nullptr;
jmethodID load_class = nullptr;
jmethodID set_accessible = nullptr;
jclass executable = nullptr;
std::string generated_class_name;
@ -139,7 +140,7 @@ bool InitJNI(JNIEnv *env) {
}
if (class_is_proxy = JNI_GetMethodID(env, clazz, "isProxy", "()Z"); !class_is_proxy) {
LOGE("Failed to find isProxy");
LOGE("Failed to find Class.isProxy");
return false;
}
@ -154,6 +155,16 @@ bool InitJNI(JNIEnv *env) {
load_class = JNI_GetMethodID(env, in_memory_class_loader, "findClass",
"(Ljava/lang/String;)Ljava/lang/Class;");
}
auto accessible_object = JNI_FindClass(env, "java/lang/reflect/AccessibleObject");
if (!accessible_object) {
LOGE("Failed to find AccessibleObject");
return false;
}
if (set_accessible = JNI_GetMethodID(env, accessible_object, "setAccessible", "(Z)V");
!set_accessible) {
LOGE("Failed to find AccessibleObject.setAccessible");
return false;
}
return true;
}
@ -510,6 +521,8 @@ Hook(JNIEnv *env, jobject target_method, jobject hooker_object, jobject callback
auto reflected_hook = JNI_ToReflectedMethod(env, built_class, hook_method, is_static);
auto reflected_backup = JNI_ToReflectedMethod(env, built_class, backup_method, is_static);
JNI_CallVoidMethod(env, reflected_backup, set_accessible, JNI_TRUE);
auto *hook = ArtMethod::FromReflectedMethod(env, reflected_hook);
auto *backup = ArtMethod::FromReflectedMethod(env, reflected_backup);