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-rw-r--r--plugins/check_service.cpp284
1 files changed, 284 insertions, 0 deletions
diff --git a/plugins/check_service.cpp b/plugins/check_service.cpp
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--- /dev/null
+++ b/plugins/check_service.cpp
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+/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
+
+#include "plugins/thresholds.hpp"
+#include <boost/program_options.hpp>
+#include <iostream>
+#include <windows.h>
+#include <shlwapi.h>
+
+#define VERSION 1.1
+
+namespace po = boost::program_options;
+
+struct printInfoStruct
+{
+ bool warn;
+ DWORD ServiceState;
+ std::wstring service;
+};
+
+static bool l_Debug;
+
+static int parseArguments(int ac, WCHAR **av, po::variables_map& vm, printInfoStruct& printInfo)
+{
+ WCHAR namePath[MAX_PATH];
+ GetModuleFileName(NULL, namePath, MAX_PATH);
+ WCHAR *progName = PathFindFileName(namePath);
+
+ po::options_description desc;
+
+ desc.add_options()
+ ("help,h", "Print help message and exit")
+ ("version,V", "Print version and exit")
+ ("debug,D", "Verbose/Debug output")
+ ("service,s", po::wvalue<std::wstring>(), "Service name to check")
+ ("description,d", "Use \"service\" to match on description")
+ ("warn,w", "Return warning (1) instead of critical (2),\n when service is not running")
+ ;
+
+ po::wcommand_line_parser parser(ac, av);
+
+ try {
+ po::store(
+ parser
+ .options(desc)
+ .style(
+ po::command_line_style::unix_style &
+ ~po::command_line_style::allow_guessing |
+ po::command_line_style::allow_long_disguise
+ )
+ .run(),
+ vm);
+ vm.notify();
+ } catch (const std::exception& e) {
+ std::cout << e.what() << '\n' << desc << '\n';
+ return 3;
+ }
+
+ if (vm.count("help")) {
+ std::wcout << progName << " Help\n\tVersion: " << VERSION << '\n';
+ wprintf(
+ L"%s is a simple program to check the status of a service.\n"
+ L"You can use the following options to define its behaviour:\n\n", progName);
+ std::cout << desc;
+ wprintf(
+ L"\nIt will then output a string looking something like this:\n\n"
+ L"\tSERVICE CRITICAL NOT_RUNNING | service=4;!4;!4;1;7\n\n"
+ L"\"SERVICE\" being the type of the check, \"CRITICAL\" the returned status\n"
+ L"and \"1\" is the returned value.\n"
+ L"A service is either running (Code 0x04) or not running (any other).\n"
+ L"For more information consult the msdn on service state transitions.\n\n"
+ L"%s' exit codes denote the following:\n"
+ L" 0\tOK,\n\tNo Thresholds were broken or the programs check part was not executed\n"
+ L" 1\tWARNING,\n\tThe warning, but not the critical threshold was broken\n"
+ L" 2\tCRITICAL,\n\tThe critical threshold was broken\n"
+ L" 3\tUNKNOWN, \n\tThe program experienced an internal or input error\n\n"
+ L"%s' thresholds work differently, since a service is either running or not\n"
+ L"all \"-w\" and \"-c\" do is say whether a not running service is a warning\n"
+ L"or critical state respectively.\n\n"
+ , progName, progName);
+ std::cout << '\n';
+ return 0;
+ }
+
+ if (vm.count("version")) {
+ std::cout << "Version: " << VERSION << '\n';
+ return 0;
+ }
+
+ if (!vm.count("service")) {
+ std::cout << "Argument \"service\" is required.\n" << desc << '\n';
+ return 3;
+ }
+
+ printInfo.service = vm["service"].as<std::wstring>();
+
+ printInfo.warn = vm.count("warn");
+
+ l_Debug = vm.count("debug") > 0;
+
+ return -1;
+}
+
+static int printOutput(const printInfoStruct& printInfo)
+{
+ if (l_Debug)
+ std::wcout << L"Constructing output string" << '\n';
+
+ std::wstring perf;
+ state state = OK;
+
+ if (!printInfo.ServiceState) {
+ std::wcout << L"SERVICE CRITICAL NOT FOUND | 'service'=" << printInfo.ServiceState << ";;;1;7" << '\n';
+ return 3;
+ }
+
+ if (printInfo.ServiceState != 0x04)
+ printInfo.warn ? state = WARNING : state = CRITICAL;
+
+ switch (state) {
+ case OK:
+ std::wcout << L"SERVICE \"" << printInfo.service << "\" OK RUNNING | 'service'=4;;;1;7" << '\n';
+ break;
+ case WARNING:
+ std::wcout << L"SERVICE \"" << printInfo.service << "\" WARNING NOT RUNNING | 'service'=" << printInfo.ServiceState << ";;;1;7" << '\n';
+ break;
+ case CRITICAL:
+ std::wcout << L"SERVICE \"" << printInfo.service << "\" CRITICAL NOT RUNNING | 'service'=" << printInfo.ServiceState << ";;;1;7" << '\n';
+ break;
+ }
+
+ return state;
+}
+
+static std::wstring getServiceByDescription(const std::wstring& description)
+{
+ SC_HANDLE hSCM = NULL;
+ LPENUM_SERVICE_STATUSW lpServices = NULL;
+ LPBYTE lpBuf = NULL;
+ DWORD cbBufSize = 0;
+ DWORD lpServicesReturned = 0;
+ DWORD pcbBytesNeeded = 0;
+ DWORD lpResumeHandle = 0;;
+
+ if (l_Debug)
+ std::wcout << L"Opening SC Manager" << '\n';
+
+ hSCM = OpenSCManager(NULL, NULL, GENERIC_READ);
+ if (hSCM == NULL)
+ goto die;
+
+ if (l_Debug)
+ std::wcout << L"Determining initially required memory" << '\n';
+
+ EnumServicesStatus(hSCM, SERVICE_WIN32 | SERVICE_DRIVER, SERVICE_STATE_ALL, NULL, 0,
+ &pcbBytesNeeded, &lpServicesReturned, &lpResumeHandle);
+
+ /* This should always be ERROR_INSUFFICIENT_BUFFER... But for some reason it is sometimes ERROR_MORE_DATA
+ * See the MSDN on EnumServiceStatus for a glimpse of despair
+ */
+
+ if (GetLastError() != ERROR_INSUFFICIENT_BUFFER && GetLastError() != ERROR_MORE_DATA)
+ goto die;
+
+ lpServices = reinterpret_cast<LPENUM_SERVICE_STATUSW>(new BYTE[pcbBytesNeeded]);
+
+ if (l_Debug)
+ std::wcout << L"Requesting Service Information. Entry point: " << lpResumeHandle << '\n';
+
+ EnumServicesStatus(hSCM, SERVICE_WIN32 | SERVICE_DRIVER, SERVICE_STATE_ALL, lpServices, pcbBytesNeeded,
+ &pcbBytesNeeded, &lpServicesReturned, &lpResumeHandle);
+
+ for (decltype(lpServicesReturned) index = 0; index < lpServicesReturned; index++) {
+ LPWSTR lpCurrent = lpServices[index].lpServiceName;
+
+ if (l_Debug) {
+ std::wcout << L"Opening Service \"" << lpServices[index].lpServiceName << L"\"\n";
+ }
+
+ SC_HANDLE hService = OpenService(hSCM, lpCurrent, SERVICE_QUERY_CONFIG);
+ if (!hService)
+ goto die;
+
+ DWORD dwBytesNeeded = 0;
+ if (l_Debug)
+ std::wcout << "Accessing config\n";
+
+ if (!QueryServiceConfig2(hService, SERVICE_CONFIG_DESCRIPTION, NULL, 0, &dwBytesNeeded) && GetLastError() != ERROR_INSUFFICIENT_BUFFER)
+ continue;
+
+ LPSERVICE_DESCRIPTION lpsd = reinterpret_cast<LPSERVICE_DESCRIPTION>(new BYTE[dwBytesNeeded]);
+
+ if (!QueryServiceConfig2(hService, SERVICE_CONFIG_DESCRIPTION, (LPBYTE)lpsd, dwBytesNeeded, &dwBytesNeeded))
+ continue;
+
+ if (lpsd->lpDescription != NULL && lstrcmp(lpsd->lpDescription, L"") != 0) {
+ std::wstring desc(lpsd->lpDescription);
+ if (l_Debug)
+ std::wcout << "Got description:\n" << desc << '\n';
+ size_t p = desc.find(description);
+ if (desc.find(description) != desc.npos)
+ return lpCurrent;
+ }
+ else if (l_Debug)
+ std::wcout << "No description found\n";
+ }
+
+ CloseServiceHandle(hSCM);
+ delete[] lpServices;
+ return L"";
+
+die:
+ printErrorInfo();
+ if (hSCM)
+ CloseServiceHandle(hSCM);
+ if (lpServices)
+ delete[] lpServices;
+ return L"";
+}
+
+static DWORD getServiceStatus(const printInfoStruct& printInfo)
+{
+ SC_HANDLE hSCM;
+ SC_HANDLE hService;
+ DWORD cbBufSize;
+ DWORD lpResumeHandle = 0;
+ LPBYTE lpBuf = NULL;
+
+ if (l_Debug)
+ std::wcout << L"Opening SC Manager" << '\n';
+
+ hSCM = OpenSCManager(NULL, NULL, GENERIC_READ);
+ if (hSCM == NULL)
+ goto die;
+
+ hService = OpenService(hSCM, printInfo.service.c_str(), SERVICE_QUERY_STATUS);
+ if (hService == NULL)
+ goto die;
+
+ QueryServiceStatusEx(hService, SC_STATUS_PROCESS_INFO, NULL, 0, &cbBufSize);
+ if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
+ goto die;
+
+ lpBuf = new BYTE[cbBufSize];
+ if (QueryServiceStatusEx(hService, SC_STATUS_PROCESS_INFO, lpBuf, cbBufSize, &cbBufSize)) {
+ LPSERVICE_STATUS_PROCESS pInfo = (LPSERVICE_STATUS_PROCESS)lpBuf;
+ return pInfo->dwCurrentState;
+ }
+
+die:
+ printErrorInfo();
+ if (hSCM)
+ CloseServiceHandle(hSCM);
+ if (hService)
+ CloseServiceHandle(hService);
+ if (lpBuf)
+ delete [] lpBuf;
+
+ return -1;
+}
+
+int wmain(int argc, WCHAR **argv)
+{
+ po::variables_map vm;
+ printInfoStruct printInfo;
+
+ int ret = parseArguments(argc, argv, vm, printInfo);
+ if (ret != -1)
+ return ret;
+
+ if (vm.count("description"))
+ printInfo.service = getServiceByDescription(vm["service"].as<std::wstring>());
+
+ if (printInfo.service.empty()) {
+ std::wcout << "Could not find service matching description\n";
+ return 3;
+ }
+
+ printInfo.ServiceState = getServiceStatus(printInfo);
+ if (printInfo.ServiceState == -1)
+ return 3;
+
+ return printOutput(printInfo);
+}
+