[APITEST][NTDLL] Implement RtlGetNtProductType testcase (#2489)

modules/rostests/apitests/ntdll/CMakeLists.txt

@@ -56,6 +56,7 @@ list(APPEND SOURCE
     RtlGetFullPathName_UstrEx.c
     RtlGetLengthWithoutTrailingPathSeperators.c
     RtlGetLongestNtPathLength.c
+    RtlGetNtProductType.c
     RtlHandle.c
     RtlImageRvaToVa.c
     RtlIsNameLegalDOS8Dot3.c

modules/rostests/apitests/ntdll/RtlGetNtProductType.c

@@ -0,0 +1,97 @@
+/*
+ * PROJECT:         ReactOS API tests
+ * LICENSE:         GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
+ * PURPOSE:         Tests for the RtlGetNtProductType API
+ * COPYRIGHT:       Copyright 2020 Bișoc George <fraizeraust99 at gmail dot com>
+ */
+
+#include "precomp.h"
+#include <winbase.h>
+#include <winreg.h>
+
+static
+BOOLEAN
+ReturnNtProduct(PDWORD ProductNtType)
+{
+    LONG Result;
+    HKEY Key;
+    WCHAR Data[20];
+    DWORD Size = sizeof(Data);
+
+    Result = RegOpenKeyExW(HKEY_LOCAL_MACHINE,
+                           L"SYSTEM\\CurrentControlSet\\Control\\ProductOptions",
+                           0,
+                           KEY_QUERY_VALUE,
+                           &Key);
+    if (Result != ERROR_SUCCESS)
+    {
+        *ProductNtType = 0;
+        return FALSE;
+    }
+
+    Result = RegQueryValueExW(Key,
+                              L"ProductType",
+                              NULL,
+                              NULL,
+                              (PBYTE)&Data,
+                              &Size);
+    if (Result != ERROR_SUCCESS)
+    {
+        RegCloseKey(Key);
+        *ProductNtType = 0;
+        return FALSE;
+    }
+
+    if (wcscmp(Data, L"WinNT") == 0)
+    {
+        *ProductNtType = NtProductWinNt;
+        RegCloseKey(Key);
+        return TRUE;
+    }
+
+    if (wcscmp(Data, L"LanmanNT") == 0)
+    {
+        *ProductNtType = NtProductLanManNt;
+        RegCloseKey(Key);
+        return TRUE;
+    }
+
+    if (wcscmp(Data, L"ServerNT") == 0)
+    {
+        *ProductNtType = NtProductServer;
+        RegCloseKey(Key);
+        return TRUE;
+    }
+
+    *ProductNtType = 0;
+    RegCloseKey(Key);
+    return FALSE;
+}
+
+START_TEST(RtlGetNtProductType)
+{
+    BOOLEAN Ret;
+    DWORD ProductNtType;
+    NT_PRODUCT_TYPE ProductType = NtProductWinNt;
+
+    /*
+     * Wrap the call in SEH. This ensures the testcase won't crash but also
+     * it proves to us that RtlGetNtProductType() throws an exception if a NULL
+     * argument is being passed to caller as output.
+     */
+    StartSeh()
+        RtlGetNtProductType(NULL);
+    EndSeh(STATUS_ACCESS_VIOLATION);
+
+    /* Query the product type normally from the Registry */
+    Ret = ReturnNtProduct(&ProductNtType);
+    if (!Ret)
+    {
+        ok(Ret, "Failed to query the product type value!\n");
+    }
+
+    /* Now, get the product type from the NTDLL system call */
+    Ret = RtlGetNtProductType(&ProductType);
+    ok(Ret == TRUE, "Expected a valid product type value (and TRUE as returned success code) but got %u as status.\n", Ret);
+    ok(ProductNtType == ProductType, "Expected the product type value to be the same but got %lu (original value pointed by RtlGetNtProductType() is %d).\n", ProductNtType, ProductType);
+}

modules/rostests/apitests/ntdll/testlist.c

@@ -55,6 +55,7 @@ extern void func_RtlGetFullPathName_Ustr(void);
 extern void func_RtlGetFullPathName_UstrEx(void);
 extern void func_RtlGetLengthWithoutTrailingPathSeperators(void);
 extern void func_RtlGetLongestNtPathLength(void);
+extern void func_RtlGetNtProductType(void);
 extern void func_RtlHandle(void);
 extern void func_RtlImageRvaToVa(void);
 extern void func_RtlIsNameLegalDOS8Dot3(void);
@@ -123,6 +124,7 @@ const struct test winetest_testlist[] =
     { "RtlGetFullPathName_UstrEx",      func_RtlGetFullPathName_UstrEx },
     { "RtlGetLengthWithoutTrailingPathSeperators", func_RtlGetLengthWithoutTrailingPathSeperators },
     { "RtlGetLongestNtPathLength",      func_RtlGetLongestNtPathLength },
+    { "RtlGetNtProductType",            func_RtlGetNtProductType },
     { "RtlHandle",                      func_RtlHandle },
     { "RtlImageRvaToVa",                func_RtlImageRvaToVa },
     { "RtlIsNameLegalDOS8Dot3",         func_RtlIsNameLegalDOS8Dot3 },