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<?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/>.
**/
/**
* Converter for converting import data from 4.2 to 4.4.
*/
class C42ImportConverter extends CConverter {
public function convert($data) {
$data['zabbix_export']['version'] = '4.4';
if (array_key_exists('hosts', $data['zabbix_export'])) {
$data['zabbix_export']['hosts'] = $this->convertInventoryMode($data['zabbix_export']['hosts']);
$data['zabbix_export']['hosts'] = $this->convertTlsAccept($data['zabbix_export']['hosts']);
}
$data['zabbix_export'] = $this->convertFormat($data['zabbix_export']);
return $data;
}
/**
* Convert inventory mode.
*
* @param array $hosts
*
* @return array
*/
protected function convertInventoryMode(array $hosts) {
foreach ($hosts as &$host) {
$host['inventory_mode'] = CXmlConstantValue::INV_MODE_MANUAL;
if (array_key_exists('inventory', $host) && array_key_exists('inventory_mode', $host['inventory'])) {
$host['inventory_mode'] = $host['inventory']['inventory_mode'];
unset($host['inventory']['inventory_mode']);
}
}
unset($host);
return $hosts;
}
/**
* Convert tsl_accept tag.
*
* @param array $hosts
*
* @return array
*/
protected function convertTlsAccept(array $hosts) {
$const = [
CXmlConstantValue::NO_ENCRYPTION => [CXmlConstantValue::NO_ENCRYPTION],
CXmlConstantValue::TLS_PSK => [CXmlConstantValue::TLS_PSK],
3 => [CXmlConstantValue::NO_ENCRYPTION, CXmlConstantValue::TLS_PSK],
CXmlConstantValue::TLS_CERTIFICATE => [CXmlConstantValue::TLS_CERTIFICATE],
5 => [CXmlConstantValue::NO_ENCRYPTION, CXmlConstantValue::TLS_CERTIFICATE],
6 => [CXmlConstantValue::TLS_PSK, CXmlConstantValue::TLS_CERTIFICATE],
7 => [CXmlConstantValue::NO_ENCRYPTION, CXmlConstantValue::TLS_PSK, CXmlConstantValue::TLS_CERTIFICATE]
];
foreach ($hosts as &$host) {
if (array_key_exists('tls_accept', $host)) {
$host['tls_accept'] = ($host['tls_accept'] === '')
? $const[CXmlConstantValue::NO_ENCRYPTION]
: $const[$host['tls_accept']];
}
}
unset($host);
return $hosts;
}
/**
* Update imported data array to format used starting from Zabbix version 4.4.
*
* @param array $data
*
* @return array
*/
protected function convertFormat(array $data) {
$schema = (new C44XmlValidator('xml'))->getSchema();
foreach ($schema['rules'] as $tag => $tag_rules) {
if (!array_key_exists($tag, $data)) {
continue;
}
$data[$tag] = $this->convertEmptyTags($data[$tag], $tag_rules);
}
return $this->convertValueToConstant($data, $schema);
}
/**
* Convert values to human readable constants.
*
* @param array|string $data
* @param array $rules
*
* @return array|string
*/
protected function convertValueToConstant($data, array $rules) {
if ($rules['type'] & XML_STRING) {
/*
* Second condition may occur when, for example, item types are no longer supported, but previous validator
* only checked the syntax, not the data.
*/
if (!array_key_exists('in', $rules) || !array_key_exists($data, $rules['in'])) {
return $data;
}
$data = $rules['in'][$data];
}
elseif ($rules['type'] & XML_ARRAY) {
foreach ($rules['rules'] as $tag => $tag_rules) {
if (array_key_exists($tag, $data)) {
if (array_key_exists('ex_rules', $tag_rules)) {
$tag_rules = call_user_func($tag_rules['ex_rules'], $data);
}
$data[$tag] = $this->convertValueToConstant($data[$tag], $tag_rules);
}
}
}
elseif ($rules['type'] & XML_INDEXED_ARRAY) {
$prefix = $rules['prefix'];
if (is_array($data)) {
foreach ($data as $tag => $value) {
$data[$tag] = $this->convertValueToConstant($value, $rules['rules'][$prefix]);
}
}
}
return $data;
}
/**
* Delete empty non-required tags.
*
* @param array|string $data
* @param array $rules
*
* @return array|string
*/
protected function convertEmptyTags($data, $rules) {
if ($rules['type'] & XML_ARRAY) {
foreach ($rules['rules'] as $tag => $tag_rules) {
if (array_key_exists($tag, $data)) {
if ($tag_rules['type'] & XML_STRING) {
if ($data[$tag] === '') {
if ($tag_rules['type'] & XML_REQUIRED) {
continue;
}
unset($data[$tag]);
}
continue;
}
if ($data[$tag] === '' || (is_array($data[$tag]) && !$data[$tag])) {
if ($tag_rules['type'] & XML_REQUIRED) {
continue;
}
unset($data[$tag]);
continue;
}
$data[$tag] = $this->convertEmptyTags($data[$tag], $tag_rules);
if ($data[$tag] === '') {
unset($data[$tag]);
}
}
}
}
elseif ($rules['type'] & XML_INDEXED_ARRAY) {
$prefix = $rules['prefix'];
foreach ($data as $tag => $value) {
$data[$tag] = $this->convertEmptyTags($value, $rules['rules'][$prefix]);
}
}
if (is_array($data) && count($data) == 0) {
return '';
}
return $data;
}
}
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