mirror of https://github.com/Icinga/icinga2.git
210 lines
7.2 KiB
C++
210 lines
7.2 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2016 Icinga Development Team (https://www.icinga.org/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include <Shlwapi.h>
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#include <iostream>
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#include <WinBase.h>
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#include "check_swap.h"
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#define VERSION 1.0
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namespace po = boost::program_options;
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static BOOL debug = FALSE;
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INT wmain(INT argc, WCHAR **argv)
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{
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printInfoStruct printInfo = { };
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po::variables_map vm;
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INT ret = parseArguments(argc, argv, vm, printInfo);
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if (ret != -1)
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return ret;
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ret = check_swap(printInfo);
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if (ret != -1)
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return ret;
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return printOutput(printInfo);
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}
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INT parseArguments(INT ac, WCHAR **av, po::variables_map& vm, printInfoStruct& printInfo)
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{
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WCHAR namePath[MAX_PATH];
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GetModuleFileName(NULL, namePath, MAX_PATH);
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WCHAR *progName = PathFindFileName(namePath);
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po::options_description desc;
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desc.add_options()
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("help,h", "Print help message and exit")
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("version,V", "Print version and exit")
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("debug,d", "Verbose/Debug output")
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("warning,w", po::wvalue<std::wstring>(), "Warning threshold")
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("critical,c", po::wvalue<std::wstring>(), "Critical threshold")
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("unit,u", po::wvalue<std::wstring>(), "The unit to use for display (default MB)")
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;
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po::basic_command_line_parser<WCHAR> parser(ac, av);
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try {
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po::store(
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parser
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.options(desc)
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.style(
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po::command_line_style::unix_style |
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po::command_line_style::allow_long_disguise)
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.run(),
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vm);
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vm.notify();
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} catch (std::exception& e) {
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std::cout << e.what() << '\n' << desc << '\n';
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return 3;
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}
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if (vm.count("help")) {
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std::wcout << progName << " Help\n\tVersion: " << VERSION << '\n';
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wprintf(
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L"%s is a simple program to check a machines swap in percent.\n"
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L"You can use the following options to define its behaviour:\n\n", progName);
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std::cout << desc;
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wprintf(
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L"\nIt will then output a string looking something like this:\n\n"
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L"\tSWAP WARNING - 20%% free | swap=2000B;3000;500;0;10000\n\n"
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L"\"SWAP\" being the type of the check, \"WARNING\" the returned status\n"
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L"and \"20%%\" is the returned value.\n"
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L"The performance data is found behind the \"|\", in order:\n"
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L"returned value, warning threshold, critical threshold, minimal value and,\n"
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L"if applicable, the maximal value. Performance data will only be displayed when\n"
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L"you set at least one threshold\n\n"
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L"%s' exit codes denote the following:\n"
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L" 0\tOK,\n\tNo Thresholds were broken or the programs check part was not executed\n"
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L" 1\tWARNING,\n\tThe warning, but not the critical threshold was broken\n"
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L" 2\tCRITICAL,\n\tThe critical threshold was broken\n"
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L" 3\tUNKNOWN, \n\tThe program experienced an internal or input error\n\n"
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L"Threshold syntax:\n\n"
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L"-w THRESHOLD\n"
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L"warn if threshold is broken, which means VALUE > THRESHOLD\n"
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L"(unless stated differently)\n\n"
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L"-w !THRESHOLD\n"
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L"inverts threshold check, VALUE < THRESHOLD (analogous to above)\n\n"
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L"-w [THR1-THR2]\n"
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L"warn is VALUE is inside the range spanned by THR1 and THR2\n\n"
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L"-w ![THR1-THR2]\n"
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L"warn if VALUE is outside the range spanned by THR1 and THR2\n\n"
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L"-w THRESHOLD%%\n"
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L"if the plugin accepts percentage based thresholds those will be used.\n"
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L"Does nothing if the plugin does not accept percentages, or only uses\n"
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L"percentage thresholds. Ranges can be used with \"%%\", but both range values need\n"
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L"to end with a percentage sign.\n\n"
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L"All of these options work with the critical threshold \"-c\" too.\n"
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, progName);
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std::cout << '\n';
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return 0;
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}
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if (vm.count("version"))
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std::wcout << L"Version: " << VERSION << '\n';
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if (vm.count("warning")) {
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try {
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printInfo.warn = threshold(vm["warning"].as<std::wstring>());
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} catch (std::invalid_argument& e) {
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std::cout << e.what() << '\n';
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return 3;
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}
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printInfo.warn.legal = !printInfo.warn.legal;
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}
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if (vm.count("critical")) {
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try {
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printInfo.crit = threshold(vm["critical"].as<std::wstring>());
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} catch (std::invalid_argument& e) {
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std::cout << e.what() << '\n';
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return 3;
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}
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printInfo.crit.legal = !printInfo.crit.legal;
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}
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if (vm.count("debug"))
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debug = TRUE;
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if (vm.count("unit")) {
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try {
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printInfo.unit = parseBUnit(vm["unit"].as<std::wstring>());
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} catch (std::invalid_argument& e) {
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std::cout << e.what() << '\n';
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return 3;
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}
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}
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return -1;
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}
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INT printOutput(printInfoStruct& printInfo)
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{
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if (debug)
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std::wcout << L"Constructing output string" << '\n';
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state state = OK;
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if (printInfo.warn.rend(printInfo.aSwap, printInfo.tSwap))
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state = WARNING;
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if (printInfo.crit.rend(printInfo.aSwap, printInfo.tSwap))
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state = CRITICAL;
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switch (state) {
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case OK:
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std::wcout << L"SWAP OK - " << printInfo.percentFree << L"% free | swap=" << printInfo.aSwap << BunitStr(printInfo.unit) << L";"
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<< printInfo.warn.pString(printInfo.tSwap) << L";" << printInfo.crit.pString(printInfo.tSwap)
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<< L";0;" << printInfo.tSwap << '\n';
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break;
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case WARNING:
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std::wcout << L"SWAP WARNING - " << printInfo.percentFree << L"% free | swap=" << printInfo.aSwap << BunitStr(printInfo.unit) << L";"
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<< printInfo.warn.pString(printInfo.tSwap) << L";" << printInfo.crit.pString(printInfo.tSwap)
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<< L";0;" << printInfo.tSwap << '\n';
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break;
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case CRITICAL:
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std::wcout << L"SWAP CRITICAL - " << printInfo.percentFree << L"% free | swap=" << printInfo.aSwap << BunitStr(printInfo.unit) << L";"
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<< printInfo.warn.pString(printInfo.tSwap) << L";" << printInfo.crit.pString(printInfo.tSwap)
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<< L";0;" << printInfo.tSwap << '\n';
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break;
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}
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return state;
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}
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INT check_swap(printInfoStruct& printInfo)
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{
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MEMORYSTATUSEX MemBuf;
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MemBuf.dwLength = sizeof(MemBuf);
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if (!GlobalMemoryStatusEx(&MemBuf)) {
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die();
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return 3;
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}
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printInfo.tSwap = round(MemBuf.ullTotalPageFile / pow(1024.0, printInfo.unit));
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printInfo.aSwap = round(MemBuf.ullAvailPageFile / pow(1024.0, printInfo.unit));
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printInfo.percentFree = 100.0 * MemBuf.ullAvailPageFile / MemBuf.ullTotalPageFile;
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return -1;
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}
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