MirrorXmlPushParser.php

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<?php
 
/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */
 
namespace ‪TYPO3\CMS\Extensionmanager\Utility\Parser;
 
use ‪TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException;
 
class ‪MirrorXmlPushParser extends ‪AbstractMirrorXmlParser
{
    protected ‪$element;
 
    public function ‪__construct()
    {
        $this->requiredPhpExtensions = 'xml';
    }
 
    protected function ‪createParser()
    {
        $this->objXml = xml_parser_create();
        xml_set_object($this->objXml, $this);
    }
 
    public function ‪parseXml($file)
    {
        $this->‪createParser();
        if (!is_resource($this->objXml)) {
            throw new ‪ExtensionManagerException('Unable to create XML parser.', 1342641009);
        }
        // Disables the functionality to allow external entities to be loaded when parsing the XML, must be kept
        $previousValueOfEntityLoader = null;
        if (PHP_MAJOR_VERSION < 8) {
            $previousValueOfEntityLoader = libxml_disable_entity_loader(true);
        }
        // keep original character case of XML document
        xml_parser_set_option($this->objXml, XML_OPTION_CASE_FOLDING, false);
        xml_parser_set_option($this->objXml, XML_OPTION_SKIP_WHITE, false);
        xml_parser_set_option($this->objXml, XML_OPTION_TARGET_ENCODING, 'utf-8');
        xml_set_element_handler($this->objXml, [$this, 'startElement'], [$this, 'endElement']);
        xml_set_character_data_handler($this->objXml, [$this, 'characterData']);
        if (!($fp = fopen($file, 'r'))) {
            throw new ‪ExtensionManagerException(sprintf('Unable to open file resource %s.', $file), 1342641010);
        }
        while ($data = fread($fp, 4096)) {
            if (!xml_parse($this->objXml, $data, feof($fp))) {
                throw new ‪ExtensionManagerException(sprintf('XML error %s in line %u of file resource %s.', xml_error_string(xml_get_error_code($this->objXml)), xml_get_current_line_number($this->objXml), $file), 1342641011);
            }
        }
        if (PHP_MAJOR_VERSION < 8) {
            libxml_disable_entity_loader($previousValueOfEntityLoader);
        }
        xml_parser_free($this->objXml);
    }
 
    protected function ‪startElement(‪$parser, $elementName, $attrs)
    {
        switch ($elementName) {
            default:
                $this->element = $elementName;
        }
    }
 
    protected function ‪endElement(‪$parser, $elementName)
    {
        switch ($elementName) {
            case 'mirror':
                $this->‪notify();
                $this->‪resetProperties();
                break;
            default:
                $this->element = null;
        }
    }
 
    protected function ‪characterData(‪$parser, $data)
    {
        if (isset($this->element)) {
            switch ($this->element) {
                case 'title':
                    $this->title = $data;
                    break;
                case 'host':
                    $this->host = $data;
                    break;
                case 'path':
                    $this->path = $data;
                    break;
                case 'country':
                    $this->country = $data;
                    break;
                default:
                    // Do nothing
            }
        }
    }
}