icinga2/plugins/check_network.cpp

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/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
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#include <Windows.h>
#include <Pdh.h>
#include <Shlwapi.h>
#include <iostream>
#include <pdhmsg.h>
#include "thresholds.h"
#include "boost/program_options.hpp"
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#define VERSION 1.0
namespace po = boost::program_options;
using std::endl; using std::vector; using std::wstring;
using std::wcout; using std::cout;
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struct nInterface
{
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wstring name;
long BytesInSec, BytesOutSec;
nInterface(wstring p)
: name(p)
{}
};
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struct printInfoStruct
{
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threshold warn, crit;
};
static int parseArguments(int, TCHAR **, po::variables_map&, printInfoStruct&);
static int printOutput(printInfoStruct&, const vector<nInterface>&);
static int check_network(vector<nInterface>&);
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int wmain(int argc, wchar_t **argv)
{
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vector<nInterface> vInterfaces;
printInfoStruct printInfo{ };
po::variables_map vm;
int ret = parseArguments(argc, argv, vm, printInfo);
if (ret != -1)
return ret;
ret = check_network(vInterfaces);
if (ret != -1)
return ret;
printOutput(printInfo, vInterfaces);
return 1;
}
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int parseArguments(int ac, wchar_t **av, po::variables_map& vm, printInfoStruct& printInfo)
{
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wchar_t namePath[MAX_PATH];
GetModuleFileName(NULL, namePath, MAX_PATH);
wchar_t *progName = PathFindFileName(namePath);
po::options_description desc("Options");
desc.add_options()
(",h", "print usage and exit")
("help", "print help message and exit")
("version,v", "print version and exit")
("warning,w", po::wvalue<wstring>(), "warning value")
("critical,c", po::wvalue<wstring>(), "critical value")
;
po::basic_command_line_parser<wchar_t> 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();
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} catch (std::exception& e) {
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cout << e.what() << endl << desc << endl;
return 3;
}
if (vm.count("h")) {
cout << desc << endl;
return 0;
}
if (vm.count("help")) {
wcout << progName << " Help\n\tVersion: " << VERSION << endl;
wprintf(
L"%s is a simple program to check a machines network performance.\n"
L"You can use the following options to define its behaviour:\n\n", progName);
cout << desc;
wprintf(
L"\nIt will then output a string looking something like this:\n\n"
L"\tNETWORK WARNING 1131B/s|network=1131B/s;1000;7000;0\n\n"
L"\"DISK\" being the type of the check, \"WARNING\" the returned status\n"
L"and \"1131B/s\" is the returned value.\n"
L"The performance data is found behind the \"|\", in order:\n"
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"
L"you set at least one threshold\n\n"
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L"This program will also print out additional performance data interface\n"
L"by interface\n\n"
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"
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"
L"-w THRESHOLD\n"
L"warn if threshold is broken, which means VALUE > THRESHOLD\n"
L"(unless stated differently)\n\n"
L"-w !THRESHOLD\n"
L"inverts threshold check, VALUE < THRESHOLD (analogous to above)\n\n"
L"-w [THR1-THR2]\n"
L"warn is VALUE is inside the range spanned by THR1 and THR2\n\n"
L"-w ![THR1-THR2]\n"
L"warn if VALUE is outside the range spanned by THR1 and THR2\n\n"
L"-w THRESHOLD%%\n"
L"if the plugin accepts percentage based thresholds those will be used.\n"
L"Does nothing if the plugin does not accept percentages, or only uses\n"
L"percentage thresholds. Ranges can be used with \"%%\", but both range values need\n"
L"to end with a percentage sign.\n\n"
L"All of these options work with the critical threshold \"-c\" too."
, progName);
cout << endl;
return 0;
}
if (vm.count("version"))
cout << "Version: " << VERSION << endl;
if (vm.count("warning")) {
try {
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printInfo.warn = threshold(vm["warning"].as<wstring>());
} catch (std::invalid_argument& e) {
cout << e.what() << endl;
return 3;
}
}
if (vm.count("critical")) {
try {
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printInfo.crit = threshold(vm["critical"].as<wstring>());
} catch (std::invalid_argument& e) {
cout << e.what() << endl;
return 3;
}
}
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return -1;
}
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int printOutput(printInfoStruct& printInfo, const vector<nInterface>& vInterfaces)
{
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long tIn = 0, tOut = 0;
std::wstringstream tss, perfDataFirst;
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state state = OK;
for (vector<nInterface>::const_iterator it = vInterfaces.begin(); it != vInterfaces.end(); ++it) {
tIn += it->BytesInSec;
tOut += it->BytesOutSec;
tss << L"netI=\"" << it->name << L"\";in=" << it->BytesInSec << L"B/s;out=" << it->BytesOutSec << L"B/s ";
}
if (printInfo.warn.rend(tIn + tOut))
state = WARNING;
if (printInfo.crit.rend(tIn + tOut))
state = CRITICAL;
perfDataFirst << L"network=" << tIn + tOut << L"B/s;" << printInfo.warn.pString() << L";" << printInfo.crit.pString() << L";" << L"0 ";
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switch (state) {
case OK:
wcout << L"NETWORK OK " << tIn + tOut << L"B/s|" << perfDataFirst.str() << tss.str() << endl;
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break;
case WARNING:
wcout << L"NETWORK WARNING " << tIn + tOut << L"B/s|" << perfDataFirst.str() << tss.str() << endl;
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break;
case CRITICAL:
wcout << L"NETWORK CRITICAL " << tIn + tOut << L"B/s|" << perfDataFirst.str() << tss.str() << endl;
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break;
}
return state;
}
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int check_network(vector <nInterface>& vInterfaces)
{
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const wchar_t *perfIn = L"\\Network Interface(*)\\Bytes Received/sec";
const wchar_t *perfOut = L"\\Network Interface(*)\\Bytes Sent/sec";
PDH_HQUERY phQuery = NULL;
PDH_HCOUNTER phCounterIn, phCounterOut;
DWORD dwBufferSizeIn = 0, dwBufferSizeOut = 0, dwItemCount = 0;
PDH_FMT_COUNTERVALUE_ITEM *pDisplayValuesIn = NULL, *pDisplayValuesOut = NULL;
PDH_STATUS err;
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err = PdhOpenQuery(NULL, NULL, &phQuery);
if (!SUCCEEDED(err))
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goto die;
err = PdhAddEnglishCounter(phQuery, perfIn, NULL, &phCounterIn);
if (!SUCCEEDED(err))
goto die;
err = PdhAddEnglishCounter(phQuery, perfOut, NULL, &phCounterOut);
if (!SUCCEEDED(err))
goto die;
err = PdhCollectQueryData(phQuery);
if (!SUCCEEDED(err))
goto die;
Sleep(1000);
err = PdhCollectQueryData(phQuery);
if (!SUCCEEDED(err))
goto die;
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err = PdhGetFormattedCounterArray(phCounterIn, PDH_FMT_LONG, &dwBufferSizeIn, &dwItemCount, pDisplayValuesIn);
if (err == PDH_MORE_DATA || SUCCEEDED(err))
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pDisplayValuesIn = reinterpret_cast<PDH_FMT_COUNTERVALUE_ITEM*>(new BYTE[dwItemCount*dwBufferSizeIn]);
else
goto die;
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err = PdhGetFormattedCounterArray(phCounterOut, PDH_FMT_LONG, &dwBufferSizeOut, &dwItemCount, pDisplayValuesOut);
if (err == PDH_MORE_DATA || SUCCEEDED(err))
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pDisplayValuesOut = reinterpret_cast<PDH_FMT_COUNTERVALUE_ITEM*>(new BYTE[dwItemCount*dwBufferSizeIn]);
else
goto die;
err = PdhGetFormattedCounterArray(phCounterIn, PDH_FMT_LONG, &dwBufferSizeIn, &dwItemCount, pDisplayValuesIn);
if (!SUCCEEDED(err))
goto die;
err = PdhGetFormattedCounterArray(phCounterOut, PDH_FMT_LONG, &dwBufferSizeOut, &dwItemCount, pDisplayValuesOut);
if (!SUCCEEDED(err))
goto die;
for (DWORD i = 0; i < dwItemCount; i++) {
nInterface *iface = new nInterface(wstring(pDisplayValuesIn[i].szName));
iface->BytesInSec = pDisplayValuesIn[i].FmtValue.longValue;
iface->BytesOutSec = pDisplayValuesOut[i].FmtValue.longValue;
vInterfaces.push_back(*iface);
}
PdhCloseQuery(phQuery);
delete pDisplayValuesIn;
delete pDisplayValuesOut;
return -1;
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die:
die(err);
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if (phQuery)
PdhCloseQuery(phQuery);
if (pDisplayValuesIn)
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delete reinterpret_cast<PDH_FMT_COUNTERVALUE_ITEM*>(pDisplayValuesIn);
if (pDisplayValuesOut)
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delete reinterpret_cast<PDH_FMT_COUNTERVALUE_ITEM*>(pDisplayValuesOut);
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return 3;
}