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<?php
/*
** Zabbix
** Copyright (C) 2001-2019 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.
**/
class CConfigFile {
const CONFIG_NOT_FOUND = 1;
const CONFIG_ERROR = 2;
const CONFIG_FILE_PATH = '/conf/zabbix.conf.php';
private static $supported_db_types = [
ZBX_DB_MYSQL => true,
ZBX_DB_ORACLE => true,
ZBX_DB_POSTGRESQL => true
];
public $configFile = null;
public $config = [];
public $error = '';
private static function exception($error, $code = self::CONFIG_ERROR) {
throw new ConfigFileException($error, $code);
}
public function __construct($file = null) {
$this->setDefaults();
if (!is_null($file)) {
$this->setFile($file);
}
}
public function setFile($file) {
$this->configFile = $file;
}
public function load() {
if (!file_exists($this->configFile)) {
self::exception('Config file does not exist.', self::CONFIG_NOT_FOUND);
}
if (!is_readable($this->configFile)) {
self::exception('Permission denied.');
}
ob_start();
include($this->configFile);
ob_end_clean();
if (!isset($DB['TYPE'])) {
self::exception('DB type is not set.');
}
if (!array_key_exists($DB['TYPE'], self::$supported_db_types)) {
self::exception(
'Incorrect value "'.$DB['TYPE'].'" for DB type. Possible values '.
implode(', ', array_keys(self::$supported_db_types)).'.'
);
}
$php_supported_db = array_keys(CFrontendSetup::getSupportedDatabases());
if (!in_array($DB['TYPE'], $php_supported_db)) {
self::exception('DB type "'.$DB['TYPE'].'" is not supported by current setup.'.
($php_supported_db ? ' Possible values '.implode(', ', $php_supported_db).'.' : '')
);
}
if (!isset($DB['DATABASE'])) {
self::exception('DB database is not set.');
}
$this->setDefaults();
$this->config['DB']['TYPE'] = $DB['TYPE'];
$this->config['DB']['DATABASE'] = $DB['DATABASE'];
if (isset($DB['SERVER'])) {
$this->config['DB']['SERVER'] = $DB['SERVER'];
}
if (isset($DB['PORT'])) {
$this->config['DB']['PORT'] = $DB['PORT'];
}
if (isset($DB['USER'])) {
$this->config['DB']['USER'] = $DB['USER'];
}
if (isset($DB['PASSWORD'])) {
$this->config['DB']['PASSWORD'] = $DB['PASSWORD'];
}
if (isset($DB['SCHEMA'])) {
$this->config['DB']['SCHEMA'] = $DB['SCHEMA'];
}
if (isset($ZBX_SERVER)) {
$this->config['ZBX_SERVER'] = $ZBX_SERVER;
}
if (isset($ZBX_SERVER_PORT)) {
$this->config['ZBX_SERVER_PORT'] = $ZBX_SERVER_PORT;
}
if (isset($ZBX_SERVER_NAME)) {
$this->config['ZBX_SERVER_NAME'] = $ZBX_SERVER_NAME;
}
$this->makeGlobal();
return $this->config;
}
public function makeGlobal() {
global $DB, $ZBX_SERVER, $ZBX_SERVER_PORT, $ZBX_SERVER_NAME;
$DB = $this->config['DB'];
$ZBX_SERVER = $this->config['ZBX_SERVER'];
$ZBX_SERVER_PORT = $this->config['ZBX_SERVER_PORT'];
$ZBX_SERVER_NAME = $this->config['ZBX_SERVER_NAME'];
}
public function save() {
try {
if (is_null($this->configFile)) {
self::exception('Cannot save, config file is not set.');
}
$this->check();
if (!file_put_contents($this->configFile, $this->getString())) {
if (file_exists($this->configFile)) {
if (file_get_contents($this->configFile) !== $this->getString()) {
self::exception(_('Unable to overwrite the existing configuration file.'));
}
}
else {
self::exception(_('Unable to create the configuration file.'));
}
}
return true;
}
catch (Exception $e) {
$this->error = $e->getMessage();
return false;
}
}
public function getString() {
return
'<?php
// Zabbix GUI configuration file.
global $DB;
$DB[\'TYPE\'] = \''.addcslashes($this->config['DB']['TYPE'], "'\\").'\';
$DB[\'SERVER\'] = \''.addcslashes($this->config['DB']['SERVER'], "'\\").'\';
$DB[\'PORT\'] = \''.addcslashes($this->config['DB']['PORT'], "'\\").'\';
$DB[\'DATABASE\'] = \''.addcslashes($this->config['DB']['DATABASE'], "'\\").'\';
$DB[\'USER\'] = \''.addcslashes($this->config['DB']['USER'], "'\\").'\';
$DB[\'PASSWORD\'] = \''.addcslashes($this->config['DB']['PASSWORD'], "'\\").'\';
// Schema name. Used for PostgreSQL.
$DB[\'SCHEMA\'] = \''.addcslashes($this->config['DB']['SCHEMA'], "'\\").'\';
$ZBX_SERVER = \''.addcslashes($this->config['ZBX_SERVER'], "'\\").'\';
$ZBX_SERVER_PORT = \''.addcslashes($this->config['ZBX_SERVER_PORT'], "'\\").'\';
$ZBX_SERVER_NAME = \''.addcslashes($this->config['ZBX_SERVER_NAME'], "'\\").'\';
$IMAGE_FORMAT_DEFAULT = IMAGE_FORMAT_PNG;
';
}
protected function setDefaults() {
$this->config['DB'] = [
'TYPE' => null,
'SERVER' => 'localhost',
'PORT' => '0',
'DATABASE' => null,
'USER' => '',
'PASSWORD' => '',
'SCHEMA' => ''
];
$this->config['ZBX_SERVER'] = 'localhost';
$this->config['ZBX_SERVER_PORT'] = '10051';
$this->config['ZBX_SERVER_NAME'] = '';
}
protected function check() {
if (!isset($this->config['DB']['TYPE'])) {
self::exception('DB type is not set.');
}
if (!array_key_exists($this->config['DB']['TYPE'], self::$supported_db_types)) {
self::exception(
'Incorrect value "'.$this->config['DB']['TYPE'].'" for DB type. Possible values '.
implode(', ', array_keys(self::$supported_db_types)).'.'
);
}
if (!isset($this->config['DB']['DATABASE'])) {
self::exception('DB database is not set.');
}
}
}
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