This patch introduces a `FindSystemInfo()` MSI custom action to reliably
detect Windows 10. The MSI built-in properties for Windows version
detection depend on bootstrapper's manifest. We could provide our own
Windows 10 compatible EXE bootstrapper, but that would cover the
Windows 10 detection in the `InstallUISequence` only. The
`InstallExecuteSequence` is launched by msiexec.exe which we cannot
tamper with would still report `VersionNT` as Windows 8 (603).
---
src/openvpnmsica/Makefile.am | 2 +-
src/openvpnmsica/openvpnmsica.c | 124 ++++++++++++++++++++++++++++++--
src/openvpnmsica/openvpnmsica.h | 15 ++++
3 files changed, 136 insertions(+), 5 deletions(-)
diff --git a/src/openvpnmsica/Makefile.am b/src/openvpnmsica/Makefile.am
index d46170b4..ecca74bc 100644
--- a/src/openvpnmsica/Makefile.am
+++ b/src/openvpnmsica/Makefile.am
@@ -41,7 +41,7 @@ libopenvpnmsica_la_CFLAGS = \
-municode -D_UNICODE \
-UNTDDI_VERSION -U_WIN32_WINNT \
-D_WIN32_WINNT=_WIN32_WINNT_VISTA
-libopenvpnmsica_la_LDFLAGS = -ladvapi32 -lole32 -lmsi -lsetupapi -lshlwapi
-no-undefined -avoid-version
+libopenvpnmsica_la_LDFLAGS = -ladvapi32 -lole32 -lmsi -lsetupapi -lshlwapi
-lversion -no-undefined -avoid-version
endif
libopenvpnmsica_la_SOURCES = \
diff --git a/src/openvpnmsica/openvpnmsica.c b/src/openvpnmsica/openvpnmsica.c
index 3b90ce05..d1642d6a 100644
--- a/src/openvpnmsica/openvpnmsica.c
+++ b/src/openvpnmsica/openvpnmsica.c
@@ -36,13 +36,15 @@
#include <memory.h>
#include <msiquery.h>
#include <shlwapi.h>
-#ifdef _MSC_VER
-#pragma comment(lib, "shlwapi.lib")
-#endif
#include <stdbool.h>
#include <stdlib.h>
#include <tchar.h>
+#ifdef _MSC_VER
+#pragma comment(lib, "shlwapi.lib")
+#pragma comment(lib, "version.lib")
+#endif
+
/**
* Local constants
@@ -119,7 +121,7 @@ openvpnmsica_setup_sequence_filename(
{
size_t len_action_name_z =
_tcslen(openvpnmsica_cleanup_action_seqs[i].szName) + 1;
TCHAR *szPropertyEx = (TCHAR*)malloc((len_property_name +
len_action_name_z) * sizeof(TCHAR));
- memcpy(szPropertyEx , szProperty
, len_property_name * sizeof(TCHAR));
+ memcpy(szPropertyEx , szProperty
, len_property_name * sizeof(TCHAR));
memcpy(szPropertyEx + len_property_name,
openvpnmsica_cleanup_action_seqs[i].szName, len_action_name_z * sizeof(TCHAR));
_stprintf_s(
szFilenameEx, _countof(szFilenameEx),
@@ -142,6 +144,120 @@ openvpnmsica_setup_sequence_filename(
}
+UINT __stdcall
+FindSystemInfo(_In_ MSIHANDLE hInstall)
+{
+#ifdef _MSC_VER
+#pragma comment(linker, DLLEXP_EXPORT)
+#endif
+
+#ifdef _DEBUG
+ MessageBox(NULL, TEXT("Attach debugger!"), TEXT(__FUNCTION__) TEXT(" v")
TEXT(PACKAGE_VERSION), MB_OK);
+#endif
+
+ UINT uiResult;
+ BOOL bIsCoInitialized = SUCCEEDED(CoInitialize(NULL));
+
+ /* Set MSI session handle in TLS. */
+ struct openvpnmsica_tls_data *s = (struct openvpnmsica_tls_data
*)TlsGetValue(openvpnmsica_tlsidx_session);
+ s->hInstall = hInstall;
+
+ // Get Windows version.
+ OSVERSIONINFOEX ver_info = { .dwOSVersionInfoSize =
sizeof(OSVERSIONINFOEX) };
+ if (!GetVersionEx((LPOSVERSIONINFO)&ver_info)) {
+ uiResult = GetLastError();
+ msg(M_NONFATAL | M_ERRNO, "%s: GetVersionEx() failed", __FUNCTION__);
+ goto cleanup_CoInitialize;
+ }
+
+ // The Windows version is usually spoofed, check using RtlGetVersion().
+ TCHAR szDllPath[0x1000];
+ ExpandEnvironmentStrings(TEXT("%SystemRoot%\\System32\\ntdll.dll"),
szDllPath,
+#ifdef UNICODE
+ _countof(szDllPath)
+#else
+ _countof(szDllPath) - 1
+#endif
+ );
+ HMODULE hNtDllModule = LoadLibrary(szDllPath);
+ if (hNtDllModule)
+ {
+ typedef NTSTATUS (WINAPI* fnRtlGetVersion)(PRTL_OSVERSIONINFOW);
+ fnRtlGetVersion RtlGetVersion =
(fnRtlGetVersion)GetProcAddress(hNtDllModule, "RtlGetVersion");
+ if (RtlGetVersion)
+ {
+ RTL_OSVERSIONINFOW rtl_ver_info = { .dwOSVersionInfoSize =
sizeof(RTL_OSVERSIONINFOW) };
+ if (RtlGetVersion(&rtl_ver_info) == 0)
+ if (
+ rtl_ver_info.dwMajorVersion > ver_info.dwMajorVersion ||
+ rtl_ver_info.dwMajorVersion == ver_info.dwMajorVersion &&
rtl_ver_info.dwMinorVersion > ver_info.dwMinorVersion ||
+ rtl_ver_info.dwMajorVersion == ver_info.dwMajorVersion &&
rtl_ver_info.dwMinorVersion == ver_info.dwMinorVersion &&
rtl_ver_info.dwBuildNumber > ver_info.dwBuildNumber)
+ {
+ // We got RtlGetVersion() and it reported newer version
than GetVersionEx().
+ ver_info.dwMajorVersion = rtl_ver_info.dwMajorVersion;
+ ver_info.dwMinorVersion = rtl_ver_info.dwMinorVersion;
+ ver_info.dwBuildNumber = rtl_ver_info.dwBuildNumber;
+ ver_info.dwPlatformId = rtl_ver_info.dwPlatformId;
+ }
+ }
+
+ FreeLibrary(hNtDllModule);
+ }
+
+ // We don't trust RtlGetVersion() either. Check the version resource of
kernel32.dll.
+ ExpandEnvironmentStrings(TEXT("%SystemRoot%\\System32\\kernel32.dll"),
szDllPath,
+#ifdef UNICODE
+ _countof(szDllPath)
+#else
+ _countof(szDllPath)-1
+#endif
+ );
+
+ DWORD dwHandle;
+ DWORD dwVerInfoSize = GetFileVersionInfoSize(szDllPath, &dwHandle);
+ if (dwVerInfoSize)
+ {
+ LPVOID pVersionInfo = malloc(dwVerInfoSize);
+ if (pVersionInfo)
+ {
+ // Read version info.
+ if (GetFileVersionInfo(szDllPath, dwHandle, dwVerInfoSize,
pVersionInfo))
+ {
+ // Get the value for the root block.
+ UINT uiSize = 0;
+ VS_FIXEDFILEINFO *pVSFixedFileInfo = NULL;
+ if (VerQueryValue(pVersionInfo, TEXT("\\"), &pVSFixedFileInfo,
&uiSize) && uiSize && pVSFixedFileInfo)
+ if (HIWORD(pVSFixedFileInfo->dwProductVersionMS) >
ver_info.dwMajorVersion ||
+ HIWORD(pVSFixedFileInfo->dwProductVersionMS) ==
ver_info.dwMajorVersion && LOWORD(pVSFixedFileInfo->dwProductVersionMS) >
ver_info.dwMinorVersion ||
+ HIWORD(pVSFixedFileInfo->dwProductVersionMS) ==
ver_info.dwMajorVersion && LOWORD(pVSFixedFileInfo->dwProductVersionMS) ==
ver_info.dwMinorVersion && HIWORD(pVSFixedFileInfo->dwProductVersionLS) >
ver_info.dwBuildNumber)
+ {
+ // We got kernel32.dll version and it is newer.
+ ver_info.dwMajorVersion =
HIWORD(pVSFixedFileInfo->dwProductVersionMS);
+ ver_info.dwMinorVersion =
LOWORD(pVSFixedFileInfo->dwProductVersionMS);
+ ver_info.dwBuildNumber =
HIWORD(pVSFixedFileInfo->dwProductVersionLS);
+ }
+ }
+
+ free(pVersionInfo);
+ }
+ }
+
+ uiResult = MsiSetProperty(hInstall, TEXT("DriverCertification"),
ver_info.dwMajorVersion >= 10 ? ver_info.wProductType > VER_NT_WORKSTATION ?
TEXT("whql") : TEXT("attsgn") : TEXT(""));
+ if (uiResult != ERROR_SUCCESS)
+ {
+ SetLastError(uiResult); /* MSDN does not mention MsiSetProperty() to
set GetLastError(). But we do have an error code. Set last error manually. */
+ msg(M_NONFATAL | M_ERRNO, "%s: MsiSetProperty(\"TAPINTERFACES\")
failed", __FUNCTION__);
+ goto cleanup_CoInitialize;
+ }
+
+ uiResult = ERROR_SUCCESS;
+
+cleanup_CoInitialize:
+ if (bIsCoInitialized) CoUninitialize();
+ return uiResult;
+}
+
+
UINT __stdcall
FindTAPInterfaces(_In_ MSIHANDLE hInstall)
{
diff --git a/src/openvpnmsica/openvpnmsica.h b/src/openvpnmsica/openvpnmsica.h
index bb8e28ec..da145062 100644
--- a/src/openvpnmsica/openvpnmsica.h
+++ b/src/openvpnmsica/openvpnmsica.h
@@ -63,6 +63,21 @@ extern "C" {
#endif
+/**
+ * Determines Windows information:
+ * - Sets `DriverCertification` MSI property to "", "attsgn" or "whql"
+ * according to the driver certification required by the running version of
+ * Windows.
+ *
+ * @param hInstall Handle to the installation provided to the DLL custom
action
+ *
+ * @return ERROR_SUCCESS on success; An error code otherwise
+ * See:
https://msdn.microsoft.com/en-us/library/windows/desktop/aa368072.aspx
+ */
+DLLEXP_DECL UINT __stdcall
+FindSystemInfo(_In_ MSIHANDLE hInstall);
+
+
/**
* Find existing TAP interfaces and set TAPINTERFACES property with semicolon
delimited list
* of installed TAP interface GUIDs.
--
2.19.0.windows.1
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