Zabbix

/*

** Zabbix

** Copyright (C) 2001-2025 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 (

    "bufio"

    "bytes"

    "errors"

    "fmt"

    "math"

    "net"

    "net/url"

    "strconv"

    "strings"

    "time"

​

    "github.com/go-ldap/ldap"

    "golang.zabbix.com/agent2/pkg/web"

    "golang.zabbix.com/sdk/conf"

    "golang.zabbix.com/sdk/errs"

    "golang.zabbix.com/sdk/log"

    "golang.zabbix.com/sdk/plugin"

)

​

const (

    errorInvalidFirstParam  = "Invalid first parameter."

    errorInvalidSecondParam = "Invalid second parameter."

    errorInvalidThirdParam  = "Invalid third parameter."

    errorInvalidFourthParam = "Invalid fourth parameter."

    errorInvalidFifthParam  = "Invalid fifth parameter."

    errorTooManyParams      = "Too many parameters."

    errorUnsupportedMetric  = "Unsupported metric."

)

​

const (

    tcpExpectFail   = -1

    tcpExpectOk     = 0

    tcpExpectIgnore = 1

)

​

type Options struct {

    Timeout int `conf:"optional,range=1:30"`

}

​

// Plugin -

type Plugin struct {

    plugin.Base

    options Options

}

​

var impl Plugin

​

func (p *Plugin) exportNetTcpListen(params []string) (result interface{}, err error) {

    if len(params) > 1 {

        return nil, errors.New(errorTooManyParams)

    }

    if len(params) == 0 || params[0] == "" {

        return nil, errors.New(errorInvalidFirstParam)

    }

    port, err := strconv.ParseUint(params[0], 10, 16)

    if err != nil {

        return nil, errors.New(errorInvalidFirstParam)

    }

​

    return exportSystemTcpListen(uint16(port))

}

​

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

    if len(params) > 2 {

        err = errors.New(errorTooManyParams)

        return

    }

    if len(params) < 2 || len(params[1]) == 0 {

        err = errors.New(errorInvalidSecondParam)