1 files changed, 129 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/win/RTLocaleQueryUserCountryCode-win.cpp b/src/VBox/Runtime/r3/win/RTLocaleQueryUserCountryCode-win.cpp
new file mode 100644
index 00000000..a95b1c22
--- /dev/null
+++ b/src/VBox/Runtime/r3/win/RTLocaleQueryUserCountryCode-win.cpp
@@ -0,0 +1,129 @@
+/* $Id: RTLocaleQueryUserCountryCode-win.cpp $ */
+/** @file
+ * IPRT - RTLocaleQueryUserCountryCode, ring-3, Windows.
+ */
+
+/*
+ * Copyright (C) 2017-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <iprt/win/windows.h>
+
+#include <iprt/locale.h>
+#include "internal/iprt.h"
+
+#include <iprt/ctype.h>
+#include <iprt/errcore.h>
+#include <iprt/string.h>
+
+#include "internal-r3-win.h"
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef GEOID (WINAPI *PFNGETUSERGEOID)(GEOCLASS);
+typedef INT   (WINAPI *PFNGETGEOINFOW)(GEOID,GEOTYPE,LPWSTR,INT,LANGID);
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** Pointer to GetUserGeoID. */
+static PFNGETUSERGEOID  g_pfnGetUserGeoID = NULL;
+/** Pointer to GetGeoInfoW. */
+static PFNGETGEOINFOW   g_pfnGetGeoInfoW = NULL;
+/** Set if we've tried to resolve the APIs. */
+static bool volatile    g_fResolvedApis = false;
+
+
+RTDECL(int) RTLocaleQueryUserCountryCode(char pszCountryCode[3])
+{
+    /*
+     * Get API pointers.
+     */
+    PFNGETUSERGEOID  pfnGetUserGeoID;
+    PFNGETGEOINFOW   pfnGetGeoInfoW;
+    if (g_fResolvedApis)
+    {
+        pfnGetUserGeoID = g_pfnGetUserGeoID;
+        pfnGetGeoInfoW  = g_pfnGetGeoInfoW;
+    }
+    else
+    {
+        pfnGetUserGeoID = (PFNGETUSERGEOID)GetProcAddress(g_hModKernel32, "GetUserGeoID");
+        pfnGetGeoInfoW  = (PFNGETGEOINFOW)GetProcAddress(g_hModKernel32, "GetGeoInfoW");
+        g_pfnGetUserGeoID = pfnGetUserGeoID;
+        g_pfnGetGeoInfoW  = pfnGetGeoInfoW;
+        g_fResolvedApis   = true;
+    }
+
+    int rc;
+    if (   pfnGetGeoInfoW
+        && pfnGetUserGeoID)
+    {
+        /*
+         * Call the API and retrieve the two letter ISO country code.
+         */
+        GEOID idGeo = pfnGetUserGeoID(GEOCLASS_NATION);
+        if (idGeo != GEOID_NOT_AVAILABLE)
+        {
+            RTUTF16 wszName[16];
+            RT_ZERO(wszName);
+            DWORD cwcReturned = pfnGetGeoInfoW(idGeo, GEO_ISO2, wszName, RT_ELEMENTS(wszName), LOCALE_NEUTRAL);
+            if (   cwcReturned >= 2
+                && cwcReturned <= 3
+                && wszName[2] == '\0'
+                && wszName[1] != '\0'
+                && RT_C_IS_ALPHA(wszName[1])
+                && wszName[0] != '\0'
+                && RT_C_IS_ALPHA(wszName[0]) )
+            {
+                pszCountryCode[0] = RT_C_TO_UPPER(wszName[0]);
+                pszCountryCode[1] = RT_C_TO_UPPER(wszName[1]);
+                pszCountryCode[2] = '\0';
+                return VINF_SUCCESS;
+            }
+            AssertMsgFailed(("cwcReturned=%d err=%u wszName='%.16ls'\n", cwcReturned, GetLastError(), wszName));
+        }
+        rc = VERR_NOT_AVAILABLE;
+    }
+    else
+        rc = VERR_NOT_SUPPORTED;
+    pszCountryCode[0] = 'Z';
+    pszCountryCode[1] = 'Z';
+    pszCountryCode[2] = '\0';
+    return rc;
+}
+