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<?php
namespace MailPoet\Newsletter;
if (!defined('ABSPATH')) exit;
use MailPoet\WP\Functions as WPFunctions;
class NewsletterHtmlSanitizer {
/** @var WPFunctions */
private $wp;
/**
* @var array
* Configuration of allowed tags for form blocks that may contain some html.
* Covers all tags available in the form editor's Rich Text component
*/
private $allowedHtml = [
'p' => [
'class' => true,
'style' => true,
],
'span' => [
'class' => true,
'style' => true,
],
'a' => [
'href' => true,
'class' => true,
'title' => true,
'target' => true,
'style' => true,
],
'h1' => [
'class' => true,
'style' => true,
],
'h2' => [
'class' => true,
'style' => true,
],
'h3' => [
'class' => true,
'style' => true,
],
'ol' => [
'class' => true,
'style' => true,
],
'ul' => [
'class' => true,
'style' => true,
],
'li' => [
'class' => true,
'style' => true,
],
'strong' => [
'class' => true,
'style' => true,
],
'em' => [
'class' => true,
'style' => true,
],
'strike' => [],
'br' => [],
'blockquote' => [
'class' => true,
'style' => true,
],
'table' => [
'class' => true,
'style' => true,
],
'tr' => [
'class' => true,
'style' => true,
],
'th' => [
'class' => true,
'style' => true,
],
'td' => [
'class' => true,
'style' => true,
],
'del' => [],
];
public function __construct(
WPFunctions $wp
) {
$this->wp = $wp;
}
public function sanitize(string $html): string {
// Because wpKses break shortcodes we prefix shortcodes with http protocol
$html = str_replace('href="[', 'href="http://[', $html);
$html = $this->wp->wpKses($html, $this->allowedHtml);
$html = str_replace('href="http://[', 'href="[', $html);
return $html;
}
}