Zabbix

/*

** Copyright (C) 2001-2024 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 "zbxsysinfo.h"

#include "../sysinfo.h"

#include "simple.h"

​

#include "../common/net.h"

#include "ntp.h"

​

#include "zbxstr.h"

#include "zbxnum.h"

#include "zbxtime.h"

#include "zbxcomms.h"

#include "zbx_discoverer_constants.h"

​

#ifdef HAVE_LIBCURL

#   include "zbxcurl.h"

#   include "zbxip.h"

#endif

​

#ifdef HAVE_LDAP

​

#include <ldap.h>

​

#ifdef HAVE_LBER_H

#   include <lber.h>

#endif

​

static int  check_ldap(const char *host, unsigned short port, int timeout, int *value_int)

{

    LDAP        *ldap   = NULL;

    LDAPMessage *res    = NULL;

    LDAPMessage *msg    = NULL;

    BerElement  *ber    = NULL;

​

    struct timeval  tm;

    char        *attrs[2] = {"namingContexts", NULL };

    char        *attr    = NULL;

    char        **valRes = NULL;

    int     ldapErr = 0;

​

    *value_int = 0;

​

    if (NULL == (ldap = ldap_init(host, port)))

    {

        zabbix_log(LOG_LEVEL_DEBUG, "LDAP - initialization failed [%s:%hu]", host, port);

        goto lbl_ret;

    }

​

#if defined(LDAP_OPT_SOCKET_BIND_ADDRESSES) && defined(HAVE_LDAP_SOURCEIP)

    if (NULL != sysinfo_get_config_source_ip())

    {

        if (LDAP_SUCCESS != (ldapErr = ldap_set_option(ldap, LDAP_OPT_SOCKET_BIND_ADDRESSES,

                sysinfo_get_config_source_ip())))

        {

            zabbix_log(LOG_LEVEL_DEBUG, "LDAP - failed to set source ip address [%s]",

                    ldap_err2string(ldapErr));

            goto lbl_ret;

        }

    }

#endif

    tm.tv_sec = timeout;

    tm.tv_usec = 0;

​

    if (LDAP_SUCCESS != (ldapErr = ldap_set_option(ldap, LDAP_OPT_NETWORK_TIMEOUT, &tm)))

    {

        zabbix_log(LOG_LEVEL_DEBUG, "LDAP - failed to set network timeout [%s]", ldap_err2string(ldapErr));

        goto lbl_ret;

    }

​

    if (LDAP_SUCCESS != (ldapErr = ldap_search_s(ldap, "", LDAP_SCOPE_BASE, "(objectClass=*)", attrs, 0, &res)))

    {

        zabbix_log(LOG_LEVEL_DEBUG, "LDAP - searching failed [%s] [%s]", host, ldap_err2string(ldapErr));

        goto lbl_ret;

    }

​

    if (NULL == (msg = ldap_first_entry(ldap, res)))

    {

        zabbix_log(LOG_LEVEL_DEBUG, "LDAP - empty sort result. [%s] [%s]", host, ldap_err2string(ldapErr));