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 "zbxpoller.h"

​

#include "zbxsysinfo.h"

#include "telnet_run.h"

#include "zbxcacheconfig.h"

#include "zbxcomms.h"

#include "zbxnum.h"

#include "zbxstr.h"

​

int zbx_telnet_get_value(zbx_dc_item_t *item, const char *config_source_ip, const char *config_ssh_key_location,

        AGENT_RESULT *result)

{

    AGENT_REQUEST   request;

    int     ret = NOTSUPPORTED;

    const char  *port, *encoding, *dns;

​

    ZBX_UNUSED(config_ssh_key_location);

​

    zbx_init_agent_request(&request);

​

    if (SUCCEED != zbx_parse_item_key(item->key, &request))

    {

        SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid item key format."));

        goto out;

    }

​

#define TELNET_RUN_KEY  "telnet.run"

    if (0 != strcmp(TELNET_RUN_KEY, get_rkey(&request)))

    {

        SET_MSG_RESULT(result, zbx_strdup(NULL, "Unsupported item key for this item type."));

        goto out;

    }

#undef TELNET_RUN_KEY

​

    if (4 < get_rparams_num(&request))

    {

        SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));

        goto out;

    }

​

    if (NULL != (dns = get_rparam(&request, 1)) && '\0' != *dns)

    {

        zbx_strscpy(item->interface.dns_orig, dns);

        item->interface.addr = item->interface.dns_orig;

    }

​

    if (NULL == item->interface.addr ||'\0' == *(item->interface.addr))

    {

        SET_MSG_RESULT(result, zbx_strdup(NULL,

                "Telnet checks must have IP parameter or the host interface to be specified."));

        goto out;

    }

​

    if (NULL != (port = get_rparam(&request, 2)) && '\0' != *port)

    {

        if (FAIL == zbx_is_ushort(port, &item->interface.port))

        {

            SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid third parameter."));

            goto out;

        }

    }

    else

        item->interface.port = ZBX_DEFAULT_TELNET_PORT;

​

    encoding = get_rparam(&request, 3);

​

    ret = telnet_run(item, result, ZBX_NULL2EMPTY_STR(encoding), item->timeout, config_source_ip);

out:

    zbx_free_agent_request(&request);

​

    return ret;

}