1 files changed, 103 insertions, 0 deletions
diff --git a/src/VBox/Installer/win/InstallHelper/VBoxCommon.cpp b/src/VBox/Installer/win/InstallHelper/VBoxCommon.cpp
new file mode 100644
index 00000000..f02447bc
--- /dev/null
+++ b/src/VBox/Installer/win/InstallHelper/VBoxCommon.cpp
@@ -0,0 +1,103 @@
+/* $Id: VBoxCommon.cpp $ */
+/** @file
+ * VBoxCommon - Misc helper routines for install helper.
+ *
+ * This is used by internal/serial.cpp and VBoxInstallHelper.cpp.
+ */
+
+/*
+ * Copyright (C) 2008-2023 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>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <iprt/win/windows.h>
+#include <msi.h>
+#include <msiquery.h>
+
+#include <iprt/string.h>
+#include <iprt/utf16.h>
+
+
+UINT VBoxGetMsiProp(MSIHANDLE hMsi, const WCHAR *pwszName, WCHAR *pwszValueBuf, DWORD cwcValueBuf)
+{
+    RT_BZERO(pwszValueBuf, cwcValueBuf * sizeof(pwszValueBuf[0]));
+
+    /** @todo r=bird: why do we need to query the size first and then the data.
+     *        The API should be perfectly capable of doing that without our help. */
+    DWORD cwcNeeded = 0;
+    UINT  uiRet = MsiGetPropertyW(hMsi, pwszName, L"", &cwcNeeded);
+    if (uiRet == ERROR_MORE_DATA)
+    {
+        ++cwcNeeded;     /* On output does not include terminating null, so add 1. */
+
+        if (cwcNeeded > cwcValueBuf)
+            return ERROR_MORE_DATA;
+        uiRet = MsiGetPropertyW(hMsi, pwszName, pwszValueBuf, &cwcNeeded);
+    }
+    return uiRet;
+}
+
+#if 0 /* unused */
+/**
+ * Retrieves a MSI property (in UTF-8).
+ *
+ * Convenience function for VBoxGetMsiProp().
+ *
+ * @returns VBox status code.
+ * @param   hMsi                MSI handle to use.
+ * @param   pcszName            Name of property to retrieve.
+ * @param   ppszValue           Where to store the allocated value on success.
+ *                              Must be free'd using RTStrFree() by the caller.
+ */
+int VBoxGetMsiPropUtf8(MSIHANDLE hMsi, const char *pcszName, char **ppszValue)
+{
+    PRTUTF16 pwszName;
+    int rc = RTStrToUtf16(pcszName, &pwszName);
+    if (RT_SUCCESS(rc))
+    {
+        WCHAR wszValue[1024]; /* 1024 should be enough for everybody (tm). */
+        if (VBoxGetMsiProp(hMsi, pwszName, wszValue, sizeof(wszValue)) == ERROR_SUCCESS)
+            rc = RTUtf16ToUtf8(wszValue, ppszValue);
+        else
+            rc = VERR_NOT_FOUND;
+
+        RTUtf16Free(pwszName);
+    }
+
+    return rc;
+}
+#endif
+
+UINT VBoxSetMsiProp(MSIHANDLE hMsi, const WCHAR *pwszName, const WCHAR *pwszValue)
+{
+    return MsiSetPropertyW(hMsi, pwszName, pwszValue);
+}
+
+UINT VBoxSetMsiPropDWORD(MSIHANDLE hMsi, const WCHAR *pwszName, DWORD dwVal)
+{
+    wchar_t wszTemp[32];
+    RTUtf16Printf(wszTemp, RT_ELEMENTS(wszTemp), "%u", dwVal);
+    return VBoxSetMsiProp(hMsi, pwszName, wszTemp);
+}
+