Zabbix

//go:build linux || (windows && amd64)

// +build linux windows,amd64

​

/*

** Zabbix

** Copyright (C) 2001-2023 Zabbix SIA

**

** 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 Street, Fifth Floor, Boston, MA  02110-1301, USA.

**/

​

package tcpudp

​

import (

    "errors"

    "net"

    "os"

    "strconv"

​

    "github.com/sokurenko/go-netstat/netstat"

)

​

// exportNetTcpSocketCount - returns number of TCP sockets that match parameters.

func (p *Plugin) exportNetTcpSocketCount(params []string) (result int, err error) {

    if len(params) > 5 {

        return 0, errors.New(errorTooManyParams)

    }

​

    var laddres net.IP

    var lNet *net.IPNet

​

    if len(params) > 0 && len(params[0]) > 0 {

        if ip := net.ParseIP(params[0]); ip != nil {

            laddres = ip

        } else if _, lNet, err = net.ParseCIDR(params[0]); err != nil {

            return 0, errors.New(errorInvalidFirstParam)

        }

    }

​

    lport := 0

    if len(params) > 1 && len(params[1]) > 0 {

        if port, err := strconv.ParseUint(params[1], 10, 16); err != nil {

            if lport, err = net.LookupPort("tcp", params[1]); err != nil {

                if lport, err = net.LookupPort("tcp6", params[1]); err != nil {

                    return 0, errors.New(errorInvalidSecondParam)

                }

            }

        } else {

            lport = int(port)

        }

    }

​