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 "trapper_proxy.h"

​

#include "../taskmanager/taskmanager_proxy.h"

#include "../proxyconfigwrite/proxyconfigwrite.h"

​

#include "zbxcomms.h"

#include "zbxcommshigh.h"

#include "zbxtasks.h"

#include "zbxmutexs.h"

#include "zbxdbwrap.h"

#include "zbxproxybuffer.h"

#include "zbxcompress.h"

#include "zbxcacheconfig.h"

#include "zbxjson.h"

​

#define LOCK_PROXY_HISTORY  zbx_mutex_lock(proxy_lock)

#define UNLOCK_PROXY_HISTORY    zbx_mutex_unlock(proxy_lock)

​

static zbx_mutex_t  proxy_lock = ZBX_MUTEX_NULL;

​

int init_proxy_history_lock(unsigned char program_type, char **error)

{

    if (0 != (program_type & ZBX_PROGRAM_TYPE_PROXY_PASSIVE))

        return zbx_mutex_create(&proxy_lock, ZBX_MUTEX_PROXY_HISTORY, error);

​

    return SUCCEED;

}

​

void    free_proxy_history_lock(unsigned char program_type)

{

    if (0 != (program_type & ZBX_PROGRAM_TYPE_PROXY_PASSIVE))

        zbx_mutex_destroy(&proxy_lock);

}

​

static void active_passive_misconfig(zbx_socket_t *sock, int config_timeout)

{

    char    *msg = NULL;

​

    msg = zbx_dsprintf(msg, "misconfiguration error: the proxy is running in the active mode but server at \"%s\""

            " sends requests to it as to proxy in passive mode", sock->peer);

​

    zabbix_log(LOG_LEVEL_WARNING, "%s", msg);

    zbx_send_proxy_response(sock, FAIL, msg, config_timeout);

    zbx_free(msg);

}

​

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

 *                                                                            *

 * Purpose: sends data from proxy to server                                   *

 *                                                                            *

 * Parameters: sock            - [IN] connection socket                       *

 *             buffer          - [IN/OUT]                                     *

 *             buffer_size     - [IN]                                         *

 *             reserved        - [IN]                                         *

 *             config_timeout  - [IN]                                         *

 *             error           - [OUT] error message                          *

 *                                                                            *

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

static int  send_data_to_server(zbx_socket_t *sock, char **buffer, size_t buffer_size, size_t reserved,

        int config_timeout, char **error)

{

    if (SUCCEED != zbx_tcp_send_ext(sock, *buffer, buffer_size, reserved, ZBX_TCP_PROTOCOL | ZBX_TCP_COMPRESS,

            config_timeout))

    {

        *error = zbx_strdup(*error, zbx_socket_strerror());

        return FAIL;

    }

​

    zbx_free(*buffer);

​

    if (SUCCEED != zbx_recv_response(sock, config_timeout, error))

        return FAIL;

​

    return SUCCEED;

}

​

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