Zabbix

/*

** Zabbix

** Copyright (C) 2001-2022 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.

**/

​

#include "common.h"

#include "db.h"

#include "log.h"

​

#include "actions.h"

#include "events.h"

#include "zbxserver.h"

#include "export.h"

​

/* event recovery data */

typedef struct

{

    zbx_uint64_t    eventid;

    zbx_uint64_t    objectid;

    DB_EVENT    *r_event;

    zbx_uint64_t    correlationid;

    zbx_uint64_t    c_eventid;

    zbx_uint64_t    userid;

    zbx_timespec_t  ts;

}

zbx_event_recovery_t;

​

/* problem event, used to cache open problems for recovery attempts */

typedef struct

{

    zbx_uint64_t        eventid;

    zbx_uint64_t        triggerid;

​

    zbx_vector_ptr_t    tags;

}

zbx_event_problem_t;

​

typedef enum

{

    CORRELATION_MATCH = 0,

    CORRELATION_NO_MATCH,

    CORRELATION_MAY_MATCH

}

zbx_correlation_match_result_t;

​

static zbx_vector_ptr_t     events;

static zbx_hashset_t        event_recovery;

static zbx_hashset_t        correlation_cache;

static zbx_correlation_rules_t  correlation_rules;

​

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

 *                                                                            *

 * Function: validate_event_tag                                               *

 *                                                                            *

 * Purpose: Check that tag name is not empty and that tag is not duplicate.   *

 *                                                                            *

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

static int  validate_event_tag(const DB_EVENT* event, const zbx_tag_t *tag)

{

    int i;

​

    if ('\0' == *tag->tag)

        return FAIL;

​

    /* check for duplicated tags */

    for (i = 0; i < event->tags.values_num; i++)

    {

        zbx_tag_t   *event_tag = (zbx_tag_t *)event->tags.values[i];

​

        if (0 == strcmp(event_tag->tag, tag->tag) && 0 == strcmp(event_tag->value, tag->value))

            return FAIL;

    }

​

    return SUCCEED;

}

​

static zbx_tag_t    *duplicate_tag(const zbx_tag_t *tag)