nextcloud/lib/private/App/InfoParser.php

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<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
* @copyright Copyright (c) 2016, Lukas Reschke <lukas@statuscode.ch>
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*
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* @author Andreas Fischer <bantu@owncloud.com>
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* @author Christoph Wurst <christoph@owncloud.com>
* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Morris Jobke <hey@morrisjobke.de>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\App;
use OCP\ICache;
class InfoParser {
/** @var \OCP\ICache|null */
private $cache;
/**
* @param ICache|null $cache
*/
public function __construct(ICache $cache = null) {
$this->cache = $cache;
}
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/**
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* @param string $file the xml file to be loaded
* @return null|array where null is an indicator for an error
*/
public function parse($file) {
if (!file_exists($file)) {
return null;
}
if(!is_null($this->cache)) {
$fileCacheKey = $file . filemtime($file);
if ($cachedValue = $this->cache->get($fileCacheKey)) {
return json_decode($cachedValue, true);
}
}
libxml_use_internal_errors(true);
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$loadEntities = libxml_disable_entity_loader(false);
$xml = simplexml_load_file($file);
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libxml_disable_entity_loader($loadEntities);
if ($xml === false) {
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libxml_clear_errors();
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return null;
}
$array = $this->xmlToArray($xml);
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if (is_null($array)) {
return null;
}
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if (!array_key_exists('info', $array)) {
$array['info'] = [];
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}
if (!array_key_exists('remote', $array)) {
$array['remote'] = [];
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}
if (!array_key_exists('public', $array)) {
$array['public'] = [];
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}
if (!array_key_exists('types', $array)) {
$array['types'] = [];
}
if (!array_key_exists('repair-steps', $array)) {
$array['repair-steps'] = [];
}
if (!array_key_exists('install', $array['repair-steps'])) {
$array['repair-steps']['install'] = [];
}
if (!array_key_exists('pre-migration', $array['repair-steps'])) {
$array['repair-steps']['pre-migration'] = [];
}
if (!array_key_exists('post-migration', $array['repair-steps'])) {
$array['repair-steps']['post-migration'] = [];
}
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if (!array_key_exists('live-migration', $array['repair-steps'])) {
$array['repair-steps']['live-migration'] = [];
}
if (!array_key_exists('uninstall', $array['repair-steps'])) {
$array['repair-steps']['uninstall'] = [];
}
if (!array_key_exists('background-jobs', $array)) {
$array['background-jobs'] = [];
}
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if (!array_key_exists('two-factor-providers', $array)) {
$array['two-factor-providers'] = [];
}
if (!array_key_exists('commands', $array)) {
$array['commands'] = [];
}
if (!array_key_exists('activity', $array)) {
$array['activity'] = [];
}
if (!array_key_exists('filters', $array['activity'])) {
$array['activity']['filters'] = [];
}
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if (array_key_exists('types', $array)) {
if (is_array($array['types'])) {
foreach ($array['types'] as $type => $v) {
unset($array['types'][$type]);
if (is_string($type)) {
$array['types'][] = $type;
}
}
} else {
$array['types'] = [];
}
}
if (isset($array['repair-steps']['install']['step']) && is_array($array['repair-steps']['install']['step'])) {
$array['repair-steps']['install'] = $array['repair-steps']['install']['step'];
}
if (isset($array['repair-steps']['pre-migration']['step']) && is_array($array['repair-steps']['pre-migration']['step'])) {
$array['repair-steps']['pre-migration'] = $array['repair-steps']['pre-migration']['step'];
}
if (isset($array['repair-steps']['post-migration']['step']) && is_array($array['repair-steps']['post-migration']['step'])) {
$array['repair-steps']['post-migration'] = $array['repair-steps']['post-migration']['step'];
}
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if (isset($array['repair-steps']['live-migration']['step']) && is_array($array['repair-steps']['live-migration']['step'])) {
$array['repair-steps']['live-migration'] = $array['repair-steps']['live-migration']['step'];
}
if (isset($array['repair-steps']['uninstall']['step']) && is_array($array['repair-steps']['uninstall']['step'])) {
$array['repair-steps']['uninstall'] = $array['repair-steps']['uninstall']['step'];
}
if (isset($array['background-jobs']['job']) && is_array($array['background-jobs']['job'])) {
$array['background-jobs'] = $array['background-jobs']['job'];
}
if (isset($array['commands']['command']) && is_array($array['commands']['command'])) {
$array['commands'] = $array['commands']['command'];
}
if (isset($array['activity']['filters']['filter']) && is_array($array['activity']['filters']['filter'])) {
$array['activity']['filters'] = $array['activity']['filters']['filter'];
}
if(!is_null($this->cache)) {
$this->cache->set($fileCacheKey, json_encode($array));
}
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return $array;
}
/**
* @param \SimpleXMLElement $xml
* @return array
*/
function xmlToArray($xml) {
if (!$xml->children()) {
return (string)$xml;
}
$array = [];
foreach ($xml->children() as $element => $node) {
$totalElement = count($xml->{$element});
if (!isset($array[$element])) {
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$array[$element] = $totalElement > 1 ? [] : "";
}
/** @var \SimpleXMLElement $node */
// Has attributes
if ($attributes = $node->attributes()) {
$data = [
'@attributes' => [],
];
if (!count($node->children())){
$value = (string)$node;
if (!empty($value)) {
$data['@value'] = (string)$node;
}
} else {
$data = array_merge($data, $this->xmlToArray($node));
}
foreach ($attributes as $attr => $value) {
$data['@attributes'][$attr] = (string)$value;
}
if ($totalElement > 1) {
$array[$element][] = $data;
} else {
$array[$element] = $data;
}
// Just a value
} else {
if ($totalElement > 1) {
$array[$element][] = $this->xmlToArray($node);
} else {
$array[$element] = $this->xmlToArray($node);
}
}
}
return $array;
}
}