mirror of
https://github.com/Icinga/icinga2.git
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334 lines
10 KiB
C++
334 lines
10 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2014 Icinga Development Team (http://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 <Windows.h>
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#include <set>
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#include <Shlwapi.h>
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#include <vector>
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#include <iostream>
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#include <math.h>
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#include "thresholds.h"
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#include "boost/program_options.hpp"
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#define VERSION 1.0
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namespace po = boost::program_options;
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using std::cout; using std::endl; using std::set;
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using std::vector; using std::wstring; using std::wcout;
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struct drive
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{
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wstring name;
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double cap, free;
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drive(wstring p)
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: name(p)
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{}
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};
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struct printInfoStruct
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{
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threshold warn, crit;
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vector<wstring> drives;
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Bunit unit;
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};
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static int parseArguments(int, wchar_t **, po::variables_map&, printInfoStruct&);
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static int printOutput(printInfoStruct&, vector<drive>&);
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static int check_drives(vector<drive>&);
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static int check_drives(vector<drive>&, printInfoStruct&);
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static bool getFreeAndCap(drive&, const Bunit&);
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int wmain(int argc, wchar_t **argv)
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{
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vector<drive> vDrives;
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printInfoStruct printInfo{ };
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po::variables_map vm;
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int ret;
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ret = parseArguments(argc, argv, vm, printInfo);
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if (ret != -1)
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return ret;
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printInfo.warn.legal = !printInfo.warn.legal;
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printInfo.crit.legal = !printInfo.crit.legal;
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if (printInfo.drives.empty())
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ret = check_drives(vDrives);
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else
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ret = check_drives(vDrives, printInfo);
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if (ret != -1)
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return ret;
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for (vector<drive>::iterator it = vDrives.begin(); it != vDrives.end(); ++it) {
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if (!getFreeAndCap(*it, printInfo.unit)) {
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wcout << L"Failed to access drive at " << it->name << endl;
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return 3;
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}
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}
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return printOutput(printInfo, vDrives);
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}
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int parseArguments(int ac, wchar_t **av, po::variables_map& vm, printInfoStruct& printInfo)
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{
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wchar_t namePath[MAX_PATH];
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GetModuleFileName(NULL, namePath, MAX_PATH);
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wchar_t *progName = PathFindFileName(namePath);
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po::options_description desc("Options");
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desc.add_options()
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("help,h", "print usage message and exit")
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("version,V", "print version and exit")
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("warning,w", po::wvalue<wstring>(), "warning threshold")
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("critical,c", po::wvalue<wstring>(), "critical threshold")
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("path,p", po::wvalue<vector<std::wstring>>()->multitoken(), "declare explicitly which drives to check (default checks all)")
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("unit,u", po::wvalue<wstring>(), "assign unit possible are: B, kB, MB, GB, TB")
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;
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po::basic_command_line_parser<wchar_t> 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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cout << e.what() << endl << desc << endl;
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return 3;
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}
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if (vm.count("help")) {
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wcout << progName << " Help\n\tVersion: " << VERSION << endl;
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wprintf(
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L"%s is a simple program to check a machines free disk space.\n"
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L"You can use the following options to define its behaviour:\n\n", progName);
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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"\tDISK WARNING 29GB|disk=29GB;50%%;5;0;120\n\n"
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L"\"DISK\" being the type of the check, \"WARNING\" the returned status\n"
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L"and \"23.8304%%\" 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.\n"
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L"This program will also print out additional performance data disk by disk\n\n"
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L"%s' exit codes denote the following:\n\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\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."
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, progName);
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cout << endl;
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return 0;
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}
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if (vm.count("version"))
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cout << "Version: " << VERSION << endl;
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if (vm.count("warning")) {
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try {
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printInfo.warn = threshold(vm["warning"].as<wstring>());
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} catch (std::invalid_argument& e) {
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cout << e.what() << endl;
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return 3;
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}
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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<wstring>());
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} catch (std::invalid_argument& e) {
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cout << e.what() << endl;
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return 3;
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}
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}
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if (vm.count("path"))
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printInfo.drives = vm["path"].as<vector<wstring>>();
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if (vm.count("unit")) {
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try {
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printInfo.unit = parseBUnit(vm["unit"].as<wstring>());
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} catch (std::invalid_argument) {
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wcout << L"Unknown unit Type " << vm["unit"].as<wstring>() << endl;
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return 3;
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}
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} else
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printInfo.unit = BunitB;
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return -1;
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}
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int printOutput(printInfoStruct& printInfo, vector<drive>& vDrives)
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{
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state state = OK;
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double tCap = 0, tFree = 0;
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std::wstringstream perf, prePerf;
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wstring unit = BunitStr(printInfo.unit);
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for (vector<drive>::iterator it = vDrives.begin(); it != vDrives.end(); ++it) {
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tCap += it->cap; tFree += it->free;
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perf << std::fixed << L" " << it->name << L"=" << removeZero(it->free) << unit << L";"
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<< printInfo.warn.pString() << L";" << printInfo.crit.pString() << L";0;" << removeZero(tCap);
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}
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prePerf << L" | disk=" << removeZero(tFree) << unit << L";" << printInfo.warn.pString() << L";"
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<< printInfo.crit.pString() << L";0;" << removeZero(tCap);
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if (printInfo.warn.perc) {
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if (printInfo.warn.rend((tFree / tCap) * 100.0))
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state = WARNING;
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} else {
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if (printInfo.warn.rend(tFree))
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state = WARNING;
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}
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if (printInfo.crit.perc) {
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if (printInfo.crit.rend((tFree / tCap) * 100.0))
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state = CRITICAL;
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} else {
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if (printInfo.crit.rend(tFree))
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state = CRITICAL;
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}
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switch (state) {
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case OK:
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wcout << L"DISK OK " << tFree << unit << prePerf.str() << perf.str() << endl;
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break;
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case WARNING:
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wcout << L"DISK WARNING " << tFree << unit << prePerf.str() << perf.str() << endl;
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break;
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case CRITICAL:
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wcout << L"DISK CRITICAL " << tFree << unit << prePerf.str() << perf.str() << endl;
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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_drives(vector<drive>& vDrives)
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{
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DWORD dwResult, dwSize = 0, dwVolumePathNamesLen = MAX_PATH + 1;
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wchar_t szLogicalDrives[MAX_PATH], szVolumeName[MAX_PATH], *szVolumePathNames;
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HANDLE hVolume;
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wstring wsLogicalDrives;
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size_t volumeNameEnd = 0;
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set<wstring> sDrives;
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dwResult = GetLogicalDriveStrings(MAX_PATH, szLogicalDrives);
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if (dwResult < 0 || dwResult > MAX_PATH)
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goto die;
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LPTSTR szSingleDrive = szLogicalDrives;
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while (*szSingleDrive) {
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wstring drname = szSingleDrive;
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sDrives.insert(drname);
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szSingleDrive += wcslen(szSingleDrive) + 1;
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}
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hVolume = FindFirstVolume(szVolumeName, MAX_PATH);
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if (hVolume == INVALID_HANDLE_VALUE)
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goto die;
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while (GetLastError() != ERROR_NO_MORE_FILES) {
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volumeNameEnd = wcslen(szVolumeName) - 1;
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szVolumePathNames = reinterpret_cast<wchar_t*>(new WCHAR[dwVolumePathNamesLen]);
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while (!GetVolumePathNamesForVolumeName(szVolumeName, szVolumePathNames, dwVolumePathNamesLen, &dwVolumePathNamesLen)) {
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if (GetLastError() != ERROR_MORE_DATA)
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break;
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delete[] reinterpret_cast<wchar_t*>(szVolumePathNames);
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szVolumePathNames = reinterpret_cast<wchar_t*>(new WCHAR[dwVolumePathNamesLen]);
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}
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sDrives.insert(wstring(szVolumePathNames));
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FindNextVolume(hVolume, szVolumeName, MAX_PATH);
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}
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for (set<wstring>::iterator it = sDrives.begin(); it != sDrives.end(); ++it) {
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UINT type = GetDriveType(it->c_str());
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if (type == DRIVE_FIXED || type == DRIVE_REMOTE) {
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vDrives.push_back(drive(*it));
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}
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}
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return -1;
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die:
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if (hVolume)
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FindVolumeClose(hVolume);
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die();
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return 3;
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}
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int check_drives(vector<drive>& vDrives, printInfoStruct& printInfo)
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{
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wchar_t *slash = L"\\";
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for (vector<wstring>::iterator it = printInfo.drives.begin();
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it != printInfo.drives.end(); ++it) {
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if (it->at(it->length() - 1) != *slash)
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it->append(slash);
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if (std::wstring::npos == it->find(L":\\")) {
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wcout << "A \":\" is required after the drive name of " << *it << endl;
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return 3;
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}
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vDrives.push_back(drive(*it));
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}
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return -1;
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}
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bool getFreeAndCap(drive& drive, const Bunit& unit)
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{
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ULARGE_INTEGER tempFree, tempTotal;
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if (!GetDiskFreeSpaceEx(drive.name.c_str(), NULL, &tempTotal, &tempFree)) {
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return FALSE;
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}
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drive.cap = round((tempTotal.QuadPart / pow(1024.0, unit)));
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drive.free = round((tempFree.QuadPart / pow(1024.0, unit)));
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return TRUE;
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} |