mirror of
https://github.com/Icinga/icinga2.git
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391 lines
13 KiB
C++
391 lines
13 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2015 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 <set>
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#include <Shlwapi.h>
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#include <iostream>
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#include <math.h>
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#include <boost/foreach.hpp>
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#include <boost/bind.hpp>
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#include "check_disk.h"
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#define VERSION 1.1
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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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std::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, printInfo.exclude_drives);
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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 (std::vector<drive>::iterator it = vDrives.begin(); it != vDrives.end(); ++it) {
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if (!getFreeAndCap(*it, printInfo.unit)) {
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std::wcout << "Failed to access drive at " << it->name << '\n';
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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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static 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("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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("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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("path,p", po::wvalue<std::vector<std::wstring>>()->multitoken(), "Declare explicitly which drives to check (default checks all)")
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("exclude_device,x", po::wvalue<std::vector<std::wstring>>()->multitoken(), "Exclude these drives from check")
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("exclude-type,X", po::wvalue<std::vector<std::wstring>>()->multitoken(), "Exclude partition types (ignored)")
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("iwarning,W", po::wvalue<std::wstring>(), "Warning threshold for inodes (ignored)")
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("icritical,K", po::wvalue<std::wstring>(), "Critical threshold for inodes (ignored)")
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("unit,u", po::wvalue<std::wstring>(), "Assign unit possible are: B, kB, MB, GB, TB")\
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("megabytes,m", "use megabytes, overridden by -unit")
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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 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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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"\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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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::cout << "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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}
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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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}
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if (vm.count("path"))
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printInfo.drives = vm["path"].as<std::vector<std::wstring>>();
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if (vm.count("exclude_device"))
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printInfo.exclude_drives = vm["exclude_device"].as<std::vector<std::wstring>>();
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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) {
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std::wcout << "Unknown unit Type " << vm["unit"].as<std::wstring>() << '\n';
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return 3;
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}
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} else {
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if (vm.count("megabytes"))
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printInfo.unit = BunitMB;
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else
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printInfo.unit = BunitB;
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}
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if (vm.count("debug"))
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debug = TRUE;
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return -1;
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}
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static INT printOutput(printInfoStruct& printInfo, std::vector<drive>& vDrives)
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{
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if (debug)
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std::wcout << "Constructing output string\n";
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std::vector<std::wstring> wsDrives, wsPerf;
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std::wstring unit = BunitStr(printInfo.unit);
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state state = OK;
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std::wstring output = L"DISK OK - free space:";
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double tCap = 0, tFree = 0;
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for (std::vector<drive>::iterator it = vDrives.begin(); it != vDrives.end(); it++) {
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tCap += it->cap;
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tFree += it->free;
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wsDrives.push_back(it->name + L" " + removeZero(it->free) + L" " + unit + L" (" +
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removeZero(std::round(it->free/it->cap * 100.0)) + L"%); ");
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wsPerf.push_back(L" " + it->name + L"=" + removeZero(it->free) + unit + L";" +
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printInfo.warn.pString(it->cap) + L";" + printInfo.crit.pString(it->cap) + L";0;"
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+ removeZero(it->cap));
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if (printInfo.crit.rend(it->free, it->cap))
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state = CRITICAL;
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if (state == OK && printInfo.warn.rend(it->free, it->cap))
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state = WARNING;
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}
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if (state == WARNING)
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output = L"DISK WARNING - free space:";
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if (state == CRITICAL)
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output = L"DISK CRITICAL - free space:";
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std::wcout << output;
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if (vDrives.size() > 1)
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std::wcout << "Total " << tFree << unit << " (" << removeZero(std::round(tFree/tCap * 100.0)) << "%); ";
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for (std::vector<std::wstring>::const_iterator it = wsDrives.begin(); it != wsDrives.end(); it++)
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std::wcout << *it;
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std::wcout << "|";
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for (std::vector<std::wstring>::const_iterator it = wsPerf.begin(); it != wsPerf.end(); it++)
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std::wcout << *it;
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std::wcout << '\n';
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return state;
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}
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static INT check_drives(std::vector<drive>& vDrives, std::vector<std::wstring>& vExclude_Drives)
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{
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DWORD dwResult, dwSize = 0, dwVolumePathNamesLen = MAX_PATH + 1;
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WCHAR szLogicalDrives[1024], szVolumeName[MAX_PATH], *szVolumePathNames = NULL;
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HANDLE hVolume = NULL;
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std::wstring wsLogicalDrives;
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size_t volumeNameEnd = 0;
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std::set<std::wstring> sDrives;
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if (debug)
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std::wcout << "Getting logic drive string (includes network drives)\n";
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dwResult = GetLogicalDriveStrings(MAX_PATH, szLogicalDrives);
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if (dwResult > MAX_PATH)
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goto die;
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if (debug)
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std::wcout << "Splitting string intoo single drive names\n";
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LPTSTR szSingleDrive = szLogicalDrives;
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while (*szSingleDrive) {
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std::wstring drname = szSingleDrive;
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sDrives.insert(drname);
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szSingleDrive += wcslen(szSingleDrive) + 1;
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if (debug)
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std::wcout << "Got: " << drname << '\n';
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}
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if (debug)
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std::wcout << "Getting volume mountpoints (includes NTFS folders)\n"
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<< "Getting first volume\n";
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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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if (debug)
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std::wcout << "Traversing through list of drives\n";
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while (GetLastError() != ERROR_NO_MORE_FILES) {
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if (debug)
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std::wcout << "Path name for " << szVolumeName << "= \"";
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volumeNameEnd = wcslen(szVolumeName) - 1;
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szVolumePathNames = reinterpret_cast<WCHAR*>(new WCHAR[dwVolumePathNamesLen]);
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while (!GetVolumePathNamesForVolumeName(szVolumeName, szVolumePathNames, dwVolumePathNamesLen,
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&dwVolumePathNamesLen)) {
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if (GetLastError() != ERROR_MORE_DATA)
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break;
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delete[] reinterpret_cast<WCHAR*>(szVolumePathNames);
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szVolumePathNames = reinterpret_cast<WCHAR*>(new WCHAR[dwVolumePathNamesLen]);
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}
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if (debug)
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std::wcout << szVolumePathNames << "\"\n";
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sDrives.insert(std::wstring(szVolumePathNames));
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FindNextVolume(hVolume, szVolumeName, MAX_PATH);
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}
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if (debug)
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std::wcout << "Creating vector from found volumes, ignoring cd drives etc.:\n";
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for (std::set<std::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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if (debug)
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std::wcout << "\t" << *it << '\n';
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vDrives.push_back(drive(*it));
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}
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}
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FindVolumeClose(hVolume);
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if (szVolumePathNames)
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delete[] reinterpret_cast<WCHAR*>(szVolumePathNames);
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if (!vExclude_Drives.empty()) {
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if (debug)
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std::wcout << "Removing excluded drives\n";
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BOOST_FOREACH(const std::wstring wsDriveName, vExclude_Drives)
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{
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vDrives.erase(std::remove_if(vDrives.begin(), vDrives.end(),
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boost::bind(checkName, _1, wsDriveName + L'\\')), vDrives.end());
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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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static INT check_drives(std::vector<drive>& vDrives, printInfoStruct& printInfo)
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{
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if (!printInfo.exclude_drives.empty()) {
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if (debug)
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std::wcout << "Removing excluded drives from user input drives\n";
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BOOST_FOREACH(std::wstring wsDrive, printInfo.exclude_drives)
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{
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printInfo.drives.erase(std::remove(printInfo.drives.begin(), printInfo.drives.end(), wsDrive),
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printInfo.drives.end());
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}
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}
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if (debug)
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std::wcout << "Parsing user input drive names\n";
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for (std::vector<std::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) != *L"\\")
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it->append(L"\\");
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if (std::wstring::npos == it->find(L":\\")) {
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std::wcout << "A \":\" is required after the drive name of " << *it << '\n';
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return 3;
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}
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if (debug)
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std::wcout << "Added " << *it << '\n';
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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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static BOOL getFreeAndCap(drive& drive, const Bunit& unit)
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{
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if (debug)
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std::wcout << "Getting free disk space for drive " << drive.name << '\n';
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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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if (debug)
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std::wcout << "\tcap: " << tempFree.QuadPart << '\n';
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drive.cap = round((tempTotal.QuadPart / pow(1024.0, unit)));
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if (debug)
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std::wcout << "\tAfter conversion: " << drive.cap << '\n'
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<< "\tfree: " << tempFree.QuadPart << '\n';
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drive.free = round((tempFree.QuadPart / pow(1024.0, unit)));
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if (debug)
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std::wcout << "\tAfter conversion: " << drive.free << '\n' << '\n';
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return TRUE;
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}
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static bool checkName(const drive& d, const std::wstring& s)
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{
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return (s == d.name);
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}
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