DocumentPurifier.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\WebDAV\Mount;
 
use ilHtmlPurifierAbstractLibWrapper;
use ilRTESettings;
use HTMLPurifier_Config;
 
class DocumentPurifier extends ilHtmlPurifierAbstractLibWrapper
{
    private array $allowedTags;
    protected string $cacheDirectory;
 
    public function __construct(?array $allowedTags = null, ?string $cacheDirectory = null)
    {
        $this->cacheDirectory = $cacheDirectory ?? ilHtmlPurifierAbstractLibWrapper::_getCacheDirectory();
        $this->allowedTags = $allowedTags ?? ilRTESettings::_getUsedHTMLTags('textarea');
 
        parent::__construct();
    }
 
    protected function getPurifierConfigInstance(): HTMLPurifier_Config
    {
        $config = HTMLPurifier_Config::createDefault();
        $config->set('HTML.DefinitionID', 'ilias termsofservice document');
        $config->set('HTML.DefinitionRev', 1);
        $config->set('HTML.TargetBlank', true);
        $config->set('Cache.SerializerPath', $this->cacheDirectory);
        $config->set('HTML.Doctype', 'XHTML 1.0 Strict');
 
        $tags = $this->allowedTags;
        $tags = $this->makeElementListTinyMceCompliant($tags);
 
        $tags[] = 'b';
        $tags[] = 'i';
 
        $config->set('HTML.AllowedElements', $this->removeUnsupportedElements($tags));
        $config->set('HTML.ForbiddenAttributes', 'div@style');
 
        if ($def = $config->maybeGetRawHTMLDefinition()) {
            $def->addAttribute('a', 'target', 'Enum#_blank,_self,_target,_top');
        }
 
        return $config;
    }
}