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 Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

#include "zbxexec.h"

​

#include "zbxstr.h"

#include "zbxtime.h"

#include "zbxthreads.h"

#include "zbxlog.h"

​

/* the size of temporary buffer used to read from output stream */

#define PIPE_BUFFER_SIZE    4096

​

#ifdef _WINDOWS

​

/******************************************************************************

 *                                                                            *

 * Purpose: considers a difference between times in milliseconds              *

 *                                                                            *

 * Parameters: time1         - [IN] first time point                          *

 *             time2         - [IN] second time point                         *

 *                                                                            *

 * Return value: difference between times in milliseconds                     *

 *                                                                            *

 ******************************************************************************/

static int  zbx_get_timediff_ms(struct _timeb *time1, struct _timeb *time2)

{

    int ms;

​

    ms = (int)(time2->time - time1->time) * 1000;

    ms += time2->millitm - time1->millitm;

​

    if (0 > ms)

        ms = 0;

​

    return ms;

}

​

/******************************************************************************

 *                                                                            *

 * Purpose: read data from pipe                                               *

 *                                                                            *

 * Parameters: hRead         - [IN] a handle to the device                    *

 *             buf           - [IN/OUT] a pointer to the buffer               *

 *             buf_size      - [IN] buffer size                               *

 *             offset        - [IN/OUT] current position in the buffer        *

 *             timeout_ms    - [IN] timeout in milliseconds                   *

 *                                                                            *

 * Return value: SUCCEED, FAIL or TIMEOUT_ERROR if timeout reached            *

 *                                                                            *

 ******************************************************************************/

static int  zbx_read_from_pipe(HANDLE hRead, char **buf, size_t *buf_size, size_t *offset, int timeout_ms)