Zabbix

<?php

/*

** 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/>.

**/

​

​

/**

 * Database backend class for PostgreSQL.

 */

class PostgresqlDbBackend extends DbBackend {

    /**

     * Database name.

     *

     * @var string

     */

    protected $dbname = '';

​

    /**

     * DB schema.

     *

     * @var string

     */

    protected $schema = '';

​

    /**

     * User name.

     *

     * @var string

     */

    protected $user = '';

​

    /**

     * Check if 'dbversion' table exists.

     *

     * @return bool

     */

    protected function checkDbVersionTable() {

        $table_exists = DBfetch(DBselect(

            'SELECT 1 FROM information_schema.tables'.

            ' WHERE table_catalog='.zbx_dbstr($this->dbname).

                ' AND table_schema='.zbx_dbstr($this->schema).

                ' AND table_name='.zbx_dbstr('dbversion')

        ));

​

        if (!$table_exists) {

            $this->setError(_s('Unable to determine current Zabbix database version: %1$s.',

                _s('the table "%1$s" was not found', 'dbversion')

            ));

​

            return false;

        }

​

        return true;