Zabbix

/*

** 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 file

​

import (

    "crypto/md5"

    "errors"

    "fmt"

    "io"

    "time"

​

    "git.zabbix.com/ap/plugin-support/std"

    "git.zabbix.com/ap/plugin-support/zbxerr"

)

​

func md5sum(file std.File, start time.Time, timeout int) (result interface{}, err error) {

    var bnum int64

    bnum = 16 * 1024

    buf := make([]byte, bnum)

​

    hash := md5.New()

​

    for bnum > 0 {

        bnum, _ = io.CopyBuffer(hash, file, buf)

        if time.Since(start) > time.Duration(timeout)*time.Second {

            return nil, errors.New("Timeout while processing item.")

        }

    }

​

    return fmt.Sprintf("%x", hash.Sum(nil)), nil

}

​

func (p *Plugin) exportMd5sum(params []string) (result interface{}, err error) {

    if len(params) > 1 {

        return nil, errors.New("Too many parameters.")

    }

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

        return nil, errors.New("Invalid first parameter.")

    }

​

    start := time.Now()

​

    file, err := stdOs.Open(params[0])

    if err != nil {

        return nil, zbxerr.New("Cannot open file").Wrap(err)

    }