+
+/* Many inspircd classes contain function pointers/functors which can be changed to point at platform specific implementations
+ * of code. This function repoints these pointers and functors so that calls are windows specific.
+ */
+void ChangeWindowsSpecificPointers()
+{
+ ServerInstance->Logs->Log("win32",DEBUG,"Changing to windows specific pointer and functor set");
+}
+
+DWORD WindowsForkStart()
+{
+ /* Windows implementation of fork() :P */
+ if (owner_processid)
+ return 0;
+
+ char module[MAX_PATH];
+ if(!GetModuleFileName(NULL, module, MAX_PATH))
+ {
+ printf("GetModuleFileName() failed.\n");
+ return false;
+ }
+
+ STARTUPINFO startupinfo;
+ PROCESS_INFORMATION procinfo;
+ ZeroMemory(&startupinfo, sizeof(STARTUPINFO));
+ ZeroMemory(&procinfo, sizeof(PROCESS_INFORMATION));
+
+ // Fill in the startup info struct
+ GetStartupInfo(&startupinfo);
+
+ /* Default creation flags create the processes suspended */
+ DWORD startupflags = CREATE_SUSPENDED;
+
+ /* On windows 2003/XP and above, we can use the value
+ * CREATE_PRESERVE_CODE_AUTHZ_LEVEL which gives more access
+ * to the process which we may require on these operating systems.
+ */
+ OSVERSIONINFO vi;
+ vi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+ GetVersionEx(&vi);
+ if ((vi.dwMajorVersion >= 5) && (vi.dwMinorVersion > 0))
+ startupflags |= CREATE_PRESERVE_CODE_AUTHZ_LEVEL;
+
+ // Launch our "forked" process.
+ BOOL bSuccess = CreateProcess ( module, // Module (exe) filename
+ strdup(GetCommandLine()), // Command line (exe plus parameters from the OS)
+ // NOTE: We cannot return the direct value of the
+ // GetCommandLine function here, as the pointer is
+ // passed straight to the child process, and will be
+ // invalid once we exit as it goes out of context.
+ // strdup() seems ok, though.
+ 0, // PROCESS_SECURITY_ATTRIBUTES
+ 0, // THREAD_SECURITY_ATTRIBUTES
+ TRUE, // We went to inherit handles.
+ startupflags, // Allow us full access to the process and suspend it.
+ 0, // ENVIRONMENT
+ 0, // CURRENT_DIRECTORY
+ &startupinfo, // startup info
+ &procinfo); // process info
+
+ if(!bSuccess)
+ {
+ printf("CreateProcess() error: %s\n", dlerror());
+ return false;
+ }
+
+ // Set the owner process id in the target process.
+ SIZE_T written = 0;
+ DWORD pid = GetCurrentProcessId();
+ if(!WriteProcessMemory(procinfo.hProcess, &owner_processid, &pid, sizeof(DWORD), &written) || written != sizeof(DWORD))
+ {
+ printf("WriteProcessMemory() failed: %s\n", dlerror());
+ return false;
+ }
+
+ // Resume the other thread (let it start)
+ ResumeThread(procinfo.hThread);
+
+ // Wait for the new process to kill us. If there is some error, the new process will end and we will end up at the next line.
+ WaitForSingleObject(procinfo.hProcess, INFINITE);
+
+ // If we hit this it means startup failed, default to 14 if this fails.
+ DWORD ExitCode = 14;
+ GetExitCodeProcess(procinfo.hProcess, &ExitCode);
+ CloseHandle(procinfo.hThread);
+ CloseHandle(procinfo.hProcess);
+ return ExitCode;
+}
+
+void WindowsForkKillOwner()
+{
+ HANDLE hProcess = OpenProcess(PROCESS_TERMINATE, FALSE, owner_processid);
+ if(!hProcess || !owner_processid)
+ {
+ printf("Could not open process id %u: %s.\n", owner_processid, dlerror());
+ ServerInstance->Exit(14);
+ }
+
+ // die die die
+ if(!TerminateProcess(hProcess, 0))
+ {
+ printf("Could not TerminateProcess(): %s\n", dlerror());
+ ServerInstance->Exit(14);
+ }
+
+ CloseHandle(hProcess);
+}
+
+void FindDNS(std::string& server)
+{
+ if (!server.empty())
+ return;
+
+ ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in the registry...");
+ std::string nameserver = FindNameServerWin();
+
+ /* If empty use default to 127.0.0.1 */
+ if (nameserver.empty())
+ {
+ ServerInstance->Logs->Log("CONFIG",DEFAULT,"No viable nameserver found in registry! Defaulting to nameserver '127.0.0.1'!");
+ server = "127.0.0.1";
+ return;
+ }
+
+ /* Windows stacks multiple nameservers in one registry key, seperated by commas.
+ * Spotted by Cataclysm.
+ */
+ if (nameserver.find(',') != std::string::npos)
+ nameserver = nameserver.substr(0, nameserver.find(','));
+
+ /* Just to be FUCKING AKWARD, windows fister... err i mean vista...
+ * seperates the nameservers with spaces instead.
+ */
+ if (nameserver.find(' ') != std::string::npos)
+ nameserver = nameserver.substr(0, nameserver.find(' '));
+
+ server = nameserver;
+ ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first active resolver in registry.", nameserver.c_str());
+}
+
+int clock_gettime(int clock, struct timespec * tv)
+{
+ if(tv == NULL)
+ return -1;
+
+ DWORD mstime = timeGetTime();
+ tv->tv_sec = time(NULL);
+ tv->tv_usec = (mstime - (tv->tv_sec * 1000)) * 1000000;
+ 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;
+
+ /* 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;
+ }
+
+ /* 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;
+
+ /* Connect to DCOM server */
+ hres = pLoc->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), NULL, NULL, 0, NULL, 0, 0, &pSvc);
+
+ /* 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);
+
+ if (FAILED(hres))
+ {
+ pSvc->Release();
+ pLoc->Release();
+ CoUninitialize();
+ return false;
+ }
+ return true;
+}
+
+void donewmi()
+{
+ pSvc->Release();
+ pLoc->Release();
+ CoUninitialize();
+}
+
+/* Return the CPU usage in percent of this process */
+int getcpu()
+{
+ HRESULT hres;
+ int cpu = -1;
+
+ /* Use WQL, similar to SQL, to construct a query that lists the cpu usage and pid of all processes */
+ IEnumWbemClassObject* pEnumerator = NULL;
+
+ BSTR Language = SysAllocString(L"WQL");
+ BSTR Query = SysAllocString(L"Select PercentProcessorTime,IDProcess from Win32_PerfFormattedData_PerfProc_Process");
+
+ hres = pSvc->ExecQuery(Language, Query, WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &pEnumerator);
+
+ /* Query didn't work */
+ if (!FAILED(hres))
+ {
+ IWbemClassObject *pclsObj = NULL;
+ ULONG uReturn = 0;
+
+ /* Iterate the query results */
+ while (pEnumerator)
+ {
+ VARIANT vtProp;
+ VariantInit(&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))
+ {
+ /* Matches our process ID? */
+ UINT pid = vtProp.uintVal;
+ VariantClear(&vtProp);
+ if (pid == GetCurrentProcessId())
+ {
+ /* 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?!
+ */
+ cpu = 0;
+ std::wstringstream out(vtProp.bstrVal);
+ out >> cpu;
+ VariantClear(&vtProp);
+ }
+ pclsObj->Release();
+ break;
+ }
+ pclsObj->Release();
+ }
+ }
+
+ pEnumerator->Release();
+ }
+
+ SysFreeString(Language);
+ SysFreeString(Query);
+
+ return cpu;
+}