| // 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 |