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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/>.
**/
/**
* Add tags with default values.
*/
class CDefaultImportConverter extends CConverter {
protected $rules;
public function __construct(array $schema) {
$this->rules = $schema;
}
public function convert($data) {
foreach ($this->rules['rules'] as $tag => $tag_rules) {
if (!array_key_exists($tag, $data['zabbix_export'])) {
continue;
}
$data['zabbix_export'][$tag] = $this->addDefaultValue($data['zabbix_export'][$tag], $tag_rules);
}
return $data;
}
/**
* Add default values in place of missed tags.
*
* @param mixed $data Import data.
* @param array $rules XML rules.
*
* @return mixed
*/
protected function addDefaultValue($data, array $rules) {
if ($rules['type'] & XML_ARRAY) {
foreach ($rules['rules'] as $tag => $tag_rules) {
while ($tag_rules['type'] & XML_MULTIPLE) {
$matched_multiple_rule = null;
foreach ($tag_rules['rules'] as $multiple_rule) {
if ($this->multipleRuleMatched($multiple_rule, $data)) {
$matched_multiple_rule =
$multiple_rule + array_intersect_key($tag_rules, array_flip(['default']));
break;
}
}
if ($matched_multiple_rule === null) {
// For use by developers. Do not translate.
throw new Exception('Incorrect XML_MULTIPLE validation rules.');
}
$tag_rules = $matched_multiple_rule;
}
if ($tag_rules['type'] & XML_IGNORE_TAG) {
unset($data[$tag]);
continue;
}
if (array_key_exists($tag, $data)) {
$data[$tag] = $this->addDefaultValue($data[$tag], $tag_rules);
}
elseif (array_key_exists('ex_default', $tag_rules)) {
$data[$tag] = (string) call_user_func($tag_rules['ex_default'], $data);
}
elseif (array_key_exists('default', $tag_rules)) {
$data[$tag] = (string) $tag_rules['default'];
}
else {
$data[$tag] = (($tag_rules['type'] & XML_STRING) ? '' : []);
}
}
}
elseif ($rules['type'] & XML_INDEXED_ARRAY) {
$prefix = $rules['prefix'];
foreach ($data as $key => $value) {
$data[$key] = $this->addDefaultValue($value, $rules['rules'][$prefix]);
}
}
return $data;
}
private function multipleRuleMatched(array $multiple_rule, array $data): bool {
if (array_key_exists('else', $multiple_rule)) {
return true;
}
elseif (is_array($multiple_rule['if'])) {
return array_key_exists($data[$multiple_rule['if']['tag']], $multiple_rule['if']['in']);
}
elseif ($multiple_rule['if'] instanceof Closure) {
return call_user_func($multiple_rule['if'], $data);
}
return false;
}
}
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