blob: dd2c159af8d50f562e1003407cc481dc21893249 [file] [log] [blame]
// Copyright 2007-2009 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================================================================
// IsMsiHelperInstalled requires MSI version 3.0 for MsiEnumProductsEx.
// Omaha does not require MSI 3.0.
#ifdef _WIN32_MSI
#if (_WIN32_MSI < 300)
#undef _WIN32_MSI
#define _WIN32_MSI 300
#endif
#else
#define _WIN32_MSI 300
#endif
#include <windows.h>
#include <msi.h>
#include "omaha/common/constants.h"
#include "omaha/testing/unit_test.h"
namespace omaha {
bool IsMsiHelperInstalled() {
int res = ::MsiEnumProductsEx(kHelperInstallerProductGuid,
NULL,
MSIINSTALLCONTEXT_MACHINE,
0,
NULL,
NULL,
NULL,
NULL);
bool is_msi_installed = (ERROR_SUCCESS == res);
EXPECT_TRUE(is_msi_installed || ERROR_NO_MORE_ITEMS == res);
return is_msi_installed;
}
} // namespace omaha