| 33 | } |
| 34 | |
| 35 | HRESULT Reboot(void) { |
| 36 | HRESULT hr = E_FAIL; |
| 37 | |
| 38 | HANDLE token = NULL; |
| 39 | TOKEN_PRIVILEGES privileges; |
| 40 | LUID shutdownLuid; |
| 41 | _InitiateShutdownW $InitiateShutdownW = (_InitiateShutdownW)GetProcAddress(GetModuleHandle(L"advapi32.dll"), "InitiateShutdownW"); |
| 42 | |
| 43 | // Make sure we have permission to shut down |
| 44 | if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &token)) { |
| 45 | hr = HRESULT_FROM_WIN32(GetLastError()); |
| 46 | CHECK_HR_OR_GOTO_END(L"OpenProcessToken"); |
| 47 | } |
| 48 | |
| 49 | if (!LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME, &shutdownLuid)) { |
| 50 | hr = HRESULT_FROM_WIN32(GetLastError()); |
| 51 | CHECK_HR_OR_GOTO_END(L"LookupPrivilegeValue"); |
| 52 | } |
| 53 | |
| 54 | // Ask the system nicely to give us shutdown privilege |
| 55 | privileges.PrivilegeCount = 1; |
| 56 | privileges.Privileges[0].Luid = shutdownLuid; |
| 57 | privileges.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; |
| 58 | |
| 59 | if (!AdjustTokenPrivileges(token, FALSE, &privileges, 0, NULL, NULL)) { |
| 60 | hr = HRESULT_FROM_WIN32(GetLastError()); |
| 61 | CHECK_HR_OR_GOTO_END(L"AdjustTokenPrivileges"); |
| 62 | } |
| 63 | |
| 64 | // Reboot with reason "Operating System: Security fix (Unplanned)", ensuring to install updates. |
| 65 | // Try InitiateShutdown first (Vista+) |
| 66 | if ($InitiateShutdownW) { |
| 67 | hr = HRESULT_FROM_WIN32($InitiateShutdownW(NULL, NULL, 0, SHUTDOWN_RESTART | SHUTDOWN_INSTALL_UPDATES, SHTDN_REASON_MAJOR_OPERATINGSYSTEM | SHTDN_REASON_MINOR_SECURITYFIX)); |
| 68 | } |
| 69 | |
| 70 | // Try InitiateSystemShutdownEx (2k/XP) |
| 71 | if (!SUCCEEDED(hr)) { |
| 72 | CHECK_HR(L"InitiateShutdown failed"); |
| 73 | |
| 74 | if (InitiateSystemShutdownEx(NULL, NULL, 0, FALSE, TRUE, SHTDN_REASON_MAJOR_OPERATINGSYSTEM | SHTDN_REASON_MINOR_SECURITYFIX) == 0) { |
| 75 | hr = HRESULT_FROM_WIN32(GetLastError()); |
| 76 | CHECK_HR_OR_GOTO_END(L"InitiateSystemShutdownEx"); |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | // Last-ditch attempt ExitWindowsEx (only guaranteed to work for the current logged in user) |
| 81 | if (!SUCCEEDED(hr) && !ExitWindowsEx(EWX_REBOOT | EWX_FORCEIFHUNG, SHTDN_REASON_MAJOR_OPERATINGSYSTEM | SHTDN_REASON_MINOR_SECURITYFIX)) { |
| 82 | hr = HRESULT_FROM_WIN32(GetLastError()); |
| 83 | CHECK_HR_OR_GOTO_END(L"ExitWindowsEx"); |
| 84 | } |
| 85 | |
| 86 | end: |
| 87 | if (token) { |
| 88 | CloseHandle(token); |
| 89 | } |
| 90 | |
| 91 | return hr; |
| 92 | } |