1 files changed, 387 insertions, 0 deletions
diff --git a/plugins/check_perfmon.cpp b/plugins/check_perfmon.cpp
new file mode 100644
index 0000000..0f94b12
--- /dev/null
+++ b/plugins/check_perfmon.cpp
@@ -0,0 +1,387 @@
+/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
+
+#include "plugins/thresholds.hpp"
+#include <boost/program_options.hpp>
+#include <iostream>
+#include <vector>
+#include <windows.h>
+#include <pdh.h>
+#include <pdhmsg.h>
+#include <shlwapi.h>
+
+#define VERSION 1.0
+
+namespace po = boost::program_options;
+
+struct printInfoStruct
+{
+	threshold tWarn;
+	threshold tCrit;
+	std::wstring wsFullPath;
+	double dValue;
+	DWORD dwPerformanceWait = 1000;
+	DWORD dwRequestedType = PDH_FMT_DOUBLE;
+};
+
+static bool parseArguments(const int ac, WCHAR **av, po::variables_map& vm, printInfoStruct& printInfo)
+{
+	WCHAR szNamePath[MAX_PATH + 1];
+	GetModuleFileName(NULL, szNamePath, MAX_PATH);
+	WCHAR *szProgName = PathFindFileName(szNamePath);
+
+	po::options_description desc("Options");
+	desc.add_options()
+		("help,h", "Print help page and exit")
+		("version,V", "Print version and exit")
+		("warning,w", po::wvalue<std::wstring>(), "Warning thershold")
+		("critical,c", po::wvalue<std::wstring>(), "Critical threshold")
+		("performance-counter,P", po::wvalue<std::wstring>(), "The performance counter string to use")
+		("performance-wait", po::value<DWORD>(), "Sleep in milliseconds between the two perfomance querries (Default: 1000ms)")
+		("fmt-countertype", po::wvalue<std::wstring>(), "Value type of counter: 'double'(default), 'long', 'int64'")
+		("print-objects", "Prints all available objects to console")
+		("print-object-info", "Prints all available instances and counters of --performance-counter, do not use a full perfomance counter string here")
+		("perf-syntax", po::wvalue<std::wstring>(), "Use this string as name for the performance counter (graphite compatibility)")
+		;
+
+	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_long_disguise)
+			.run(),
+			vm);
+		vm.notify();
+	} catch (const std::exception& e) {
+		std::cout << e.what() << '\n' << desc << '\n';
+		return false;
+	}
+
+	if (vm.count("version")) {
+		std::wcout << "Version: " << VERSION << '\n';
+		return false;
+	}
+
+	if (vm.count("help")) {
+		std::wcout << szProgName << " Help\n\tVersion: " << VERSION << '\n';
+		wprintf(
+			L"%s runs a check against a performance counter.\n"
+			L"You can use the following options to define its behaviour:\n\n", szProgName);
+		std::cout << desc;
+		wprintf(
+			L"\nIt will then output a string looking something like this:\n\n"
+			L"\tPERFMON CRITICAL \"\\Processor(_Total)\\%% Idle Time\" = 40.34 | "
+			L"perfmon=40.34;20;40;; \"\\Processor(_Total)\\%% Idle Time\"=40.34\n\n"
+			L"\"tPERFMON\" being the type of the check, \"CRITICAL\" the returned status\n"
+			L"and \"40.34\" is the performance counters value.\n"
+			L"%s' exit codes denote the following:\n"
+			L" 0\tOK,\n\tNo Thresholds were exceeded\n"
+			L" 1\tWARNING,\n\tThe warning was broken, but not the critical threshold\n"
+			L" 2\tCRITICAL,\n\tThe critical threshold was broken\n"
+			L" 3\tUNKNOWN, \n\tNo check could be performed\n\n"
+			, szProgName);
+		return false;
+	}
+
+	if (vm.count("warning")) {
+		try {
+			printInfo.tWarn = threshold(vm["warning"].as<std::wstring>());
+		} catch (const std::invalid_argument& e) {
+			std::wcout << e.what() << '\n';
+			return false;
+		}
+	}
+
+	if (vm.count("critical")) {
+		try {
+			printInfo.tCrit = threshold(vm["critical"].as<std::wstring>());
+		} catch (const std::invalid_argument& e) {
+			std::wcout << e.what() << '\n';
+			return false;
+		}
+	}
+
+	if (vm.count("fmt-countertype")) {
+		if (!vm["fmt-countertype"].as<std::wstring>().compare(L"int64"))
+			printInfo.dwRequestedType = PDH_FMT_LARGE;
+		else if (!vm["fmt-countertype"].as<std::wstring>().compare(L"long"))
+			printInfo.dwRequestedType = PDH_FMT_LONG;
+		else if (vm["fmt-countertype"].as<std::wstring>().compare(L"double")) {
+			std::wcout << "Unknown value type " << vm["fmt-countertype"].as<std::wstring>() << '\n';
+			return false;
+		}
+	}
+
+	if (vm.count("performance-counter"))
+		printInfo.wsFullPath = vm["performance-counter"].as<std::wstring>();
+
+	if (vm.count("performance-wait"))
+		printInfo.dwPerformanceWait = vm["performance-wait"].as<DWORD>();
+
+	return true;
+}
+
+static bool getInstancesAndCountersOfObject(const std::wstring& wsObject,
+	std::vector<std::wstring>& vecInstances, std::vector<std::wstring>& vecCounters)
+{
+	DWORD dwCounterListLength = 0, dwInstanceListLength = 0;
+
+	if (PdhEnumObjectItems(NULL, NULL, wsObject.c_str(),
+		NULL, &dwCounterListLength, NULL,
+		&dwInstanceListLength, PERF_DETAIL_WIZARD, 0) != PDH_MORE_DATA)
+		return false;
+
+	std::vector<WCHAR> mszCounterList(dwCounterListLength + 1);
+	std::vector<WCHAR> mszInstanceList(dwInstanceListLength + 1);
+
+	if (FAILED(PdhEnumObjectItems(NULL, NULL, wsObject.c_str(),
+		mszCounterList.data(), &dwCounterListLength, mszInstanceList.data(),
+		&dwInstanceListLength, PERF_DETAIL_WIZARD, 0))) {
+		return false;
+	}
+
+	if (dwInstanceListLength) {
+		std::wstringstream wssInstanceName;
+
+		// XXX: is the "- 1" correct?
+		for (DWORD c = 0; c < dwInstanceListLength - 1; ++c) {
+			if (mszInstanceList[c])
+				wssInstanceName << mszInstanceList[c];
+			else {
+				vecInstances.push_back(wssInstanceName.str());
+				wssInstanceName.str(L"");
+			}
+		}
+	}
+
+	if (dwCounterListLength) {
+		std::wstringstream wssCounterName;
+
+		// XXX: is the "- 1" correct?
+		for (DWORD c = 0; c < dwCounterListLength - 1; ++c) {
+			if (mszCounterList[c])
+				wssCounterName << mszCounterList[c];
+			else {
+				vecCounters.push_back(wssCounterName.str());
+				wssCounterName.str(L"");
+			}
+		}
+	}
+
+	return true;
+}
+
+static void printPDHError(PDH_STATUS status)
+{
+	HMODULE hPdhLibrary = NULL;
+	LPWSTR pMessage = NULL;
+
+	hPdhLibrary = LoadLibrary(L"pdh.dll");
+	if (!hPdhLibrary) {
+		std::wcout << "LoadLibrary failed with " << GetLastError() << '\n';
+		return;
+	}
+
+	if (!FormatMessage(FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_ARGUMENT_ARRAY,
+		hPdhLibrary, status, 0, (LPWSTR)&pMessage, 0, NULL)) {
+		FreeLibrary(hPdhLibrary);
+		std::wcout << "Format message failed with " << std::hex << GetLastError() << '\n';
+		return;
+	}
+
+	FreeLibrary(hPdhLibrary);
+
+	std::wcout << pMessage << '\n';
+	LocalFree(pMessage);
+}
+
+static void printObjects()
+{
+	DWORD dwBufferLength = 0;
+	PDH_STATUS status =	PdhEnumObjects(NULL, NULL, NULL,
+		&dwBufferLength, PERF_DETAIL_WIZARD, FALSE);
+	//HEX HEX! Only a Magicians gets all the info he wants, and only Microsoft knows what that means
+
+	if (status != PDH_MORE_DATA) {
+		printPDHError(status);
+		return;
+	}
+
+	std::vector<WCHAR> mszObjectList(dwBufferLength + 2);
+	status = PdhEnumObjects(NULL, NULL, mszObjectList.data(),
+		&dwBufferLength, PERF_DETAIL_WIZARD, FALSE);
+
+	if (FAILED(status)) {
+		printPDHError(status);
+		return;
+	}
+
+	DWORD c = 0;
+
+	while (++c < dwBufferLength) {
+		if (mszObjectList[c] == '\0')
+			std::wcout << '\n';
+		else
+			std::wcout << mszObjectList[c];
+	}
+}
+
+static void printObjectInfo(const printInfoStruct& pI)
+{
+	if (pI.wsFullPath.empty()) {
+		std::wcout << "No object given!\n";
+		return;
+	}
+
+	std::vector<std::wstring> vecInstances, vecCounters;
+
+	if (!getInstancesAndCountersOfObject(pI.wsFullPath, vecInstances, vecCounters)) {
+		std::wcout << "Could not enumerate instances and counters of " << pI.wsFullPath << '\n'
+			<< "Make sure it exists!\n";
+		return;
+	}
+
+	std::wcout << "Instances of " << pI.wsFullPath << ":\n";
+	if (vecInstances.empty())
+		std::wcout << "> Has no instances\n";
+	else {
+		for (const auto& instance : vecInstances)
+			std::wcout << "> " << instance << '\n';
+	}
+	std::wcout << std::endl;
+
+	std::wcout << "Performance Counters of " << pI.wsFullPath << ":\n";
+	if (vecCounters.empty())
+		std::wcout << "> Has no counters\n";
+	else {
+		for (const auto& counter : vecCounters)
+			std::wcout << "> " << counter << "\n";
+	}
+	std::wcout << std::endl;
+}
+
+bool QueryPerfData(printInfoStruct& pI)
+{
+	PDH_HQUERY hQuery = NULL;
+	PDH_HCOUNTER hCounter = NULL;
+	DWORD dwBufferSize = 0, dwItemCount = 0;
+
+	if (pI.wsFullPath.empty()) {
+		std::wcout << "No performance counter path given!\n";
+		return false;
+	}
+
+	PDH_FMT_COUNTERVALUE_ITEM *pDisplayValues = NULL;
+
+	PDH_STATUS status = PdhOpenQuery(NULL, NULL, &hQuery);
+	if (FAILED(status))
+		goto die;
+
+	status = PdhAddEnglishCounter(hQuery, pI.wsFullPath.c_str(), NULL, &hCounter);
+
+	if (FAILED(status))
+		status = PdhAddCounter(hQuery, pI.wsFullPath.c_str(), NULL, &hCounter);
+
+	if (FAILED(status))
+		goto die;
+
+	status = PdhCollectQueryData(hQuery);
+	if (FAILED(status))
+		goto die;
+
+	/*
+	* Most counters need two queries to provide a value.
+	* Those which need only one will return the second.
+	*/
+	Sleep(pI.dwPerformanceWait);
+
+	status = PdhCollectQueryData(hQuery);
+	if (FAILED(status))
+		goto die;
+
+	status = PdhGetFormattedCounterArray(hCounter, pI.dwRequestedType, &dwBufferSize, &dwItemCount, NULL);
+	if (status != PDH_MORE_DATA)
+		goto die;
+
+	pDisplayValues = reinterpret_cast<PDH_FMT_COUNTERVALUE_ITEM*>(new BYTE[dwBufferSize]);
+	status = PdhGetFormattedCounterArray(hCounter, pI.dwRequestedType, &dwBufferSize, &dwItemCount, pDisplayValues);
+
+	if (FAILED(status))
+		goto die;
+
+	switch (pI.dwRequestedType) {
+	case (PDH_FMT_LONG):
+		pI.dValue = pDisplayValues[0].FmtValue.longValue;
+		break;
+	case (PDH_FMT_LARGE):
+		pI.dValue = (double) pDisplayValues[0].FmtValue.largeValue;
+		break;
+	default:
+		pI.dValue = pDisplayValues[0].FmtValue.doubleValue;
+		break;
+	}
+
+	delete[]pDisplayValues;
+
+	return true;
+
+die:
+	printPDHError(status);
+	delete[]pDisplayValues;
+	return false;
+}
+
+static int printOutput(const po::variables_map& vm, printInfoStruct& pi)
+{
+	std::wstringstream wssPerfData;
+
+	if (vm.count("perf-syntax"))
+		wssPerfData << "'" << vm["perf-syntax"].as<std::wstring>() << "'=";
+	else
+		wssPerfData << "'" << pi.wsFullPath << "'=";
+
+	wssPerfData << pi.dValue << ';' << pi.tWarn.pString() << ';' << pi.tCrit.pString() << ";;";
+
+	if (pi.tCrit.rend(pi.dValue)) {
+		std::wcout << "PERFMON CRITICAL for '" << (vm.count("perf-syntax") ? vm["perf-syntax"].as<std::wstring>() : pi.wsFullPath)
+			<< "' = " << pi.dValue << " | " << wssPerfData.str() << "\n";
+		return 2;
+	}
+
+	if (pi.tWarn.rend(pi.dValue)) {
+		std::wcout << "PERFMON WARNING for '" << (vm.count("perf-syntax") ? vm["perf-syntax"].as<std::wstring>() : pi.wsFullPath)
+			<< "' = " << pi.dValue << " | " << wssPerfData.str() << "\n";
+		return 1;
+	}
+
+	std::wcout << "PERFMON OK for '" << (vm.count("perf-syntax") ? vm["perf-syntax"].as<std::wstring>() : pi.wsFullPath)
+		<< "' = " << pi.dValue << " | " << wssPerfData.str() << "\n";
+
+	return 0;
+}
+
+int wmain(int argc, WCHAR **argv)
+{
+	po::variables_map variables_map;
+	printInfoStruct stPrintInfo;
+	if (!parseArguments(argc, argv, variables_map, stPrintInfo))
+		return 3;
+
+	if (variables_map.count("print-objects")) {
+		printObjects();
+		return 0;
+	}
+
+	if (variables_map.count("print-object-info")) {
+		printObjectInfo(stPrintInfo);
+		return 0;
+	}
+
+	if (QueryPerfData(stPrintInfo))
+		return printOutput(variables_map, stPrintInfo);
+	else
+		return 3;
+}