From 8df502a6883c231c1318f7cb3b29509bed12ddd0 Mon Sep 17 00:00:00 2001
From: xperia64 <xperiancedapps@gmail.com>
Date: Tue, 26 Jan 2021 20:27:52 +0000
Subject: [PATCH] Implement APT command 0x0103 (#5478)

* WIP implement apt 0x0103

* Update src/core/hle/service/apt/apt.cpp

Co-authored-by: Pengfei Zhu <zhupf321@gmail.com>

* Names

Co-authored-by: Pengfei Zhu <zhupf321@gmail.com>
---
 src/core/hle/service/apt/apt.cpp   | 11 +++++++++++
 src/core/hle/service/apt/apt.h     |  8 ++++++++
 src/core/hle/service/apt/apt_a.cpp |  1 +
 src/core/hle/service/apt/apt_s.cpp |  1 +
 src/core/hle/service/apt/apt_u.cpp |  1 +
 5 files changed, 22 insertions(+)

diff --git a/src/core/hle/service/apt/apt.cpp b/src/core/hle/service/apt/apt.cpp
index a22926a9c..c52aecff4 100644
--- a/src/core/hle/service/apt/apt.cpp
+++ b/src/core/hle/service/apt/apt.cpp
@@ -28,6 +28,7 @@
 #include "core/hle/service/service.h"
 #include "core/hw/aes/ccm.h"
 #include "core/hw/aes/key.h"
+#include "core/settings.h"
 
 SERVICE_CONSTRUCT_IMPL(Service::APT::Module)
 
@@ -1007,6 +1008,16 @@ void Module::APTInterface::CheckNew3DS(Kernel::HLERequestContext& ctx) {
     LOG_WARNING(Service_APT, "(STUBBED) called");
 }
 
+void Module::APTInterface::Unknown0x0103(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp(ctx, 0x103, 0, 0); // 0x01030000
+    IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
+
+    rb.Push(RESULT_SUCCESS);
+    rb.Push<u8>(Settings::values.is_new_3ds ? 2 : 1);
+
+    LOG_WARNING(Service_APT, "(STUBBED) called");
+}
+
 void Module::APTInterface::IsTitleAllowed(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp(ctx, 0x105, 4, 0); // 0x01050100
     const u64 program_id = rp.Pop<u64>();
diff --git a/src/core/hle/service/apt/apt.h b/src/core/hle/service/apt/apt.h
index abf2fc9ce..851136ad0 100644
--- a/src/core/hle/service/apt/apt.h
+++ b/src/core/hle/service/apt/apt.h
@@ -690,6 +690,14 @@ public:
          */
         void CheckNew3DS(Kernel::HLERequestContext& ctx);
 
+        /**
+         * APT::Unknown0x0103 service function. Determines whether Smash 4 allows C-Stick
+         *  Outputs:
+         *      1: Result code, 0 on success otherwise error code
+         *      2: u8 output: 2 = New3DS+valid/initialized (in Smash 4), 1 = Old3DS or invalid
+         */
+        void Unknown0x0103(Kernel::HLERequestContext& ctx);
+
         /**
          * APT::IsTitleAllowed service function
          *  Inputs:
diff --git a/src/core/hle/service/apt/apt_a.cpp b/src/core/hle/service/apt/apt_a.cpp
index 4f3a5f3d0..87e454f1c 100644
--- a/src/core/hle/service/apt/apt_a.cpp
+++ b/src/core/hle/service/apt/apt_a.cpp
@@ -99,6 +99,7 @@ APT_A::APT_A(std::shared_ptr<Module> apt)
         {0x00580002, nullptr, "GetProgramID"},
         {0x01010000, &APT_A::CheckNew3DSApp, "CheckNew3DSApp"},
         {0x01020000, &APT_A::CheckNew3DS, "CheckNew3DS"},
+        {0x01030000, &APT_A::Unknown0x0103, "Unknown0x0103"},
         {0x01040000, nullptr, "IsStandardMemoryLayout"},
         {0x01050100, &APT_A::IsTitleAllowed, "IsTitleAllowed"},
     };
diff --git a/src/core/hle/service/apt/apt_s.cpp b/src/core/hle/service/apt/apt_s.cpp
index 20359c2ae..732b55a23 100644
--- a/src/core/hle/service/apt/apt_s.cpp
+++ b/src/core/hle/service/apt/apt_s.cpp
@@ -99,6 +99,7 @@ APT_S::APT_S(std::shared_ptr<Module> apt)
         {0x00580002, nullptr, "GetProgramID"},
         {0x01010000, &APT_S::CheckNew3DSApp, "CheckNew3DSApp"},
         {0x01020000, &APT_S::CheckNew3DS, "CheckNew3DS"},
+        {0x01030000, &APT_S::Unknown0x0103, "Unknown0x0103"},
         {0x01040000, nullptr, "IsStandardMemoryLayout"},
         {0x01050100, &APT_S::IsTitleAllowed, "IsTitleAllowed"},
     };
diff --git a/src/core/hle/service/apt/apt_u.cpp b/src/core/hle/service/apt/apt_u.cpp
index 43b821c39..ec1dbe291 100644
--- a/src/core/hle/service/apt/apt_u.cpp
+++ b/src/core/hle/service/apt/apt_u.cpp
@@ -98,6 +98,7 @@ APT_U::APT_U(std::shared_ptr<Module> apt)
         {0x00580002, nullptr, "GetProgramID"},
         {0x01010000, &APT_U::CheckNew3DSApp, "CheckNew3DSApp"},
         {0x01020000, &APT_U::CheckNew3DS, "CheckNew3DS"},
+        {0x01030000, &APT_U::Unknown0x0103, "Unknown0x0103"},
     };
     RegisterHandlers(functions);
 }