Service/AM: Implement GetProductCode (#3549)

* [skip ci]

* [skip ci]

* [skip ci]

* [skip ci]

* Service/AM: Implement GetProductCode

* fix?

* remove close

* Use PushRaw

* Use NCCHContainer

* 2 if found

* struct

* fix build?

* fix

* remove return

* fix?

* 6 words

src/core/hle/service/am/am.cpp

@@ -712,6 +712,32 @@ void Module::Interface::DeleteUserProgram(Kernel::HLERequestContext& ctx) {
         LOG_ERROR(Service_AM, "FileUtil::DeleteDirRecursively unexpectedly failed");
 }
 
+void Module::Interface::GetProductCode(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp(ctx, 0x0005, 3, 0);
+    FS::MediaType media_type = rp.PopEnum<FS::MediaType>();
+    u64 title_id = rp.Pop<u64>();
+    std::string path = GetTitleContentPath(media_type, title_id);
+
+    if (!FileUtil::Exists(path)) {
+        IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
+        rb.Push(ResultCode(ErrorDescription::NotFound, ErrorModule::AM, ErrorSummary::InvalidState,
+                           ErrorLevel::Permanent));
+    } else {
+        struct ProductCode {
+            u8 code[0x10];
+        };
+
+        ProductCode product_code;
+
+        IPC::RequestBuilder rb = rp.MakeBuilder(6, 0);
+        FileSys::NCCHContainer ncch(path);
+        ncch.Load();
+        std::memcpy(&product_code.code, &ncch.ncch_header.product_code, 0x10);
+        rb.Push(RESULT_SUCCESS);
+        rb.PushRaw(product_code);
+    }
+}
+
 void Module::Interface::GetDLCTitleInfos(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp(ctx, 0x1005, 2, 4); // 0x10050084
 

src/core/hle/service/am/am.h

@@ -242,6 +242,18 @@ public:
          */
         void DeleteUserProgram(Kernel::HLERequestContext& ctx);
 
+        /**
+         * AM::GetProductCode service function
+         * Gets the product code of a title
+         *  Inputs:
+         *      1 : Media Type
+         *      2-3 : Title ID
+         *  Outputs:
+         *      1 : Result, 0 on success, otherwise error code
+         *      2-5 : Product Code
+         */
+        void GetProductCode(Kernel::HLERequestContext& ctx);
+
         /**
          * AM::GetDLCTitleInfos service function
          * Wrapper for AM::GetProgramInfos, explicitly checks that TID high value is 0004008C.

src/core/hle/service/am/am_net.cpp

@@ -13,7 +13,7 @@ AM_NET::AM_NET(std::shared_ptr<Module> am) : Module::Interface(std::move(am), "a
         {0x00020082, &AM_NET::GetProgramList, "GetProgramList"},
         {0x00030084, &AM_NET::GetProgramInfos, "GetProgramInfos"},
         {0x000400C0, &AM_NET::DeleteUserProgram, "DeleteUserProgram"},
-        {0x000500C0, nullptr, "GetProductCode"},
+        {0x000500C0, &AM_NET::GetProductCode, "GetProductCode"},
         {0x000600C0, nullptr, "GetStorageId"},
         {0x00070080, &AM_NET::DeleteTicket, "DeleteTicket"},
         {0x00080000, &AM_NET::GetNumTickets, "GetNumTickets"},

src/core/hle/service/am/am_sys.cpp

@@ -13,7 +13,7 @@ AM_SYS::AM_SYS(std::shared_ptr<Module> am) : Module::Interface(std::move(am), "a
         {0x00020082, &AM_SYS::GetProgramList, "GetProgramList"},
         {0x00030084, &AM_SYS::GetProgramInfos, "GetProgramInfos"},
         {0x000400C0, &AM_SYS::DeleteUserProgram, "DeleteUserProgram"},
-        {0x000500C0, nullptr, "GetProductCode"},
+        {0x000500C0, &AM_SYS::GetProductCode, "GetProductCode"},
         {0x000600C0, nullptr, "GetStorageId"},
         {0x00070080, &AM_SYS::DeleteTicket, "DeleteTicket"},
         {0x00080000, &AM_SYS::GetNumTickets, "GetNumTickets"},

src/core/hle/service/am/am_u.cpp

@@ -13,7 +13,7 @@ AM_U::AM_U(std::shared_ptr<Module> am) : Module::Interface(std::move(am), "am:u"
         {0x00020082, &AM_U::GetProgramList, "GetProgramList"},
         {0x00030084, &AM_U::GetProgramInfos, "GetProgramInfos"},
         {0x000400C0, &AM_U::DeleteUserProgram, "DeleteUserProgram"},
-        {0x000500C0, nullptr, "GetProductCode"},
+        {0x000500C0, &AM_U::GetProductCode, "GetProductCode"},
         {0x000600C0, nullptr, "GetStorageId"},
         {0x00070080, &AM_U::DeleteTicket, "DeleteTicket"},
         {0x00080000, &AM_U::GetNumTickets, "GetNumTickets"},