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

​

//#include <iconv.h>

//#include <stdlib.h>

//size_t call_iconv(iconv_t cd, char *inbuf, size_t *inbytesleft, char *outbuf, size_t *outbytesleft) {

//   return iconv(cd, &inbuf, inbytesleft, &outbuf, outbytesleft);

// }

//

// #cgo windows LDFLAGS: -liconv

import "C"

​

import (

    "syscall"

    "unsafe"

​

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

)

​

func decode(encoder string, inbuf []byte) (outbuf []byte) {

​

    if "" == encoder {

        if len(inbuf) > 3 && 0xef == inbuf[0] && 0xbb == inbuf[1] && 0xbf == inbuf[2] {

            encoder = "UTF-8"

        } else if len(inbuf) > 2 && 0xff == inbuf[0] && 0xfe == inbuf[1] {

            encoder = "UTF-16LE"

        } else if len(inbuf) > 2 && 0xfe == inbuf[0] && 0xff == inbuf[1] {

            encoder = "UTF-16BE"

        } else {

            return inbuf

        }

    }

​

    tocode := C.CString("UTF-8")

    log.Tracef("Calling C function \"free()\"")

    defer C.free(unsafe.Pointer(tocode))

    fromcode := C.CString(encoder)

    log.Tracef("Calling C function \"free()\"")

    defer C.free(unsafe.Pointer(fromcode))

​

    log.Tracef("Calling C function \"iconv_open()\"")

    cd, err := C.iconv_open(tocode, fromcode)

​

    if err != nil {

        return inbuf