diff options
| -rw-r--r-- | win/inspircd_win32wrapper.cpp | 222 |
1 files changed, 103 insertions, 119 deletions
diff --git a/win/inspircd_win32wrapper.cpp b/win/inspircd_win32wrapper.cpp index 62d9ff329..7e72220e8 100644 --- a/win/inspircd_win32wrapper.cpp +++ b/win/inspircd_win32wrapper.cpp @@ -646,149 +646,133 @@ int gettimeofday(struct timeval * tv, void * tz) DWORD mstime = timeGetTime(); tv->tv_sec = time(NULL); tv->tv_usec = (mstime - (tv->tv_sec * 1000)) * 1000; - return 0; + return 0; } +/* Initialise WMI. Microsoft have the silliest ideas about easy ways to + * obtain the CPU percentage of a running process! + * The whole API for this uses evil DCOM and is entirely unicode, giving + * all results and accepting queries as wide strings. + */ bool initwmi() { - HRESULT hres; - - hres = CoInitializeEx(0, COINIT_MULTITHREADED); - if (FAILED(hres)) - { - return false; - } - - hres = CoInitializeSecurity( - NULL, - -1, // COM authentication - NULL, // Authentication services - NULL, // Reserved - RPC_C_AUTHN_LEVEL_DEFAULT, // Default authentication - RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation - NULL, // Authentication info - EOAC_NONE, // Additional capabilities - NULL // Reserved - ); - - - if (FAILED(hres)) - { - CoUninitialize(); - return false; - } + HRESULT hres; + + /* Initialise COM. This can kill babies. */ + hres = CoInitializeEx(0, COINIT_MULTITHREADED); + if (FAILED(hres)) + return false; + + /* COM security. This stuff kills kittens */ + hres = CoInitializeSecurity(NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_DEFAULT, + RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, NULL); + + if (FAILED(hres)) + { + CoUninitialize(); + return false; + } - pLoc = NULL; - hres = CoCreateInstance( - CLSID_WbemLocator, - 0, - CLSCTX_INPROC_SERVER, - IID_IWbemLocator, (LPVOID *) &pLoc); + /* Instance to COM object */ + pLoc = NULL; + hres = CoCreateInstance(CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID*)&pLoc); - if (FAILED(hres)) - { - CoUninitialize(); - return false; - } - - pSvc = NULL; - - hres = pLoc->ConnectServer( - _bstr_t(L"ROOT\\CIMV2"), // Object path of WMI namespace - NULL, // User name. NULL = current user - NULL, // User password. NULL = current - 0, // Locale. NULL indicates current - NULL, // Security flags. - 0, // Authority (e.g. Kerberos) - 0, // Context object - &pSvc // pointer to IWbemServices proxy - ); + if (FAILED(hres)) + { + CoUninitialize(); + return false; + } + + pSvc = NULL; + + /* Connect to DCOM server */ + hres = pLoc->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), NULL, NULL, 0, NULL, 0, 0, &pSvc); - if (FAILED(hres)) - { - pLoc->Release(); - CoUninitialize(); - return false; - } - - hres = CoSetProxyBlanket( - pSvc, // Indicates the proxy to set - RPC_C_AUTHN_WINNT, // RPC_C_AUTHN_xxx - RPC_C_AUTHZ_NONE, // RPC_C_AUTHZ_xxx - NULL, // Server principal name - RPC_C_AUTHN_LEVEL_CALL, // RPC_C_AUTHN_LEVEL_xxx - RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx - NULL, // client identity - EOAC_NONE // proxy capabilities - ); - - if (FAILED(hres)) - { - pSvc->Release(); - pLoc->Release(); - CoUninitialize(); - return false; - } + /* That didn't work, maybe no kittens found to kill? */ + if (FAILED(hres)) + { + pLoc->Release(); + CoUninitialize(); + return false; + } + + /* Don't even ASK what this does. I'm still not too sure myself. */ + hres = CoSetProxyBlanket(pSvc, RPC_C_AUTHN_WINNT, RPC_C_AUTHZ_NONE, NULL, RPC_C_AUTHN_LEVEL_CALL, + RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE); - return true; + if (FAILED(hres)) + { + pSvc->Release(); + pLoc->Release(); + CoUninitialize(); + return false; + } + return true; } void donewmi() { - pSvc->Release(); - pLoc->Release(); - CoUninitialize(); + pSvc->Release(); + pLoc->Release(); + CoUninitialize(); } +/* Return the CPU usage in percent of this process */ int getcpu() { - HRESULT hres; - - IEnumWbemClassObject* pEnumerator = NULL; - hres = pSvc->ExecQuery( - bstr_t("WQL"), - bstr_t("Select PercentProcessorTime,IDProcess from Win32_PerfFormattedData_PerfProc_Process"), - WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, - NULL, - &pEnumerator); + HRESULT hres; + + /* Use WQL, similar to SQL, to construct a query that lists the cpu usage and pid of all processes */ + IEnumWbemClassObject* pEnumerator = NULL; + hres = pSvc->ExecQuery(bstr_t("WQL"), + bstr_t("Select PercentProcessorTime,IDProcess from Win32_PerfFormattedData_PerfProc_Process"), + WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &pEnumerator); - if (FAILED(hres)) - return -1; + /* Query didn't work */ + if (FAILED(hres)) + return -1; - IWbemClassObject *pclsObj = NULL; - ULONG uReturn = 0; - int slotpos = 0; + IWbemClassObject *pclsObj = NULL; + ULONG uReturn = 0; - while (pEnumerator) - { - VARIANT vtProp; - HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, - &pclsObj, &uReturn); - - if (uReturn == 0) - break; - - /* Enumerate processes */ - hr = pclsObj->Get(L"IDProcess", 0, &vtProp, 0, 0); - if (!FAILED(hr)) + /* Iterate the query results */ + while (pEnumerator) { - if (vtProp.uintVal == GetCurrentProcessId()) + VARIANT vtProp; + /* Next item */ + HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, &pclsObj, &uReturn); + + /* No more items left */ + if (uReturn == 0) + break; + + /* Find process ID */ + hr = pclsObj->Get(L"IDProcess", 0, &vtProp, 0, 0); + if (!FAILED(hr)) { - VariantClear(&vtProp); - /* Get CPU percentage for this process */ - hr = pclsObj->Get(L"PercentProcessorTime", 0, &vtProp, 0, 0); - if (!FAILED(hr)) + /* Matches our process ID? */ + if (vtProp.uintVal == GetCurrentProcessId()) { VariantClear(&vtProp); - int cpu = 0; - std::wstringstream out(vtProp.bstrVal); - out >> cpu; - return cpu; + /* Get CPU percentage for this process */ + hr = pclsObj->Get(L"PercentProcessorTime", 0, &vtProp, 0, 0); + if (!FAILED(hr)) + { + /* Deal with wide string ickyness. Who in their right + * mind puts a number in a bstrVal wide string item?! + */ + VariantClear(&vtProp); + int cpu = 0; + std::wstringstream out(vtProp.bstrVal); + out >> cpu; + pEnumerator->Release(); + pclsObj->Release(); + return cpu; + } } } } - } - pEnumerator->Release(); - pclsObj->Release(); - return -1; + pEnumerator->Release(); + pclsObj->Release(); + return -1; } |