From 5db42e11336a250908386c82308ca517f5a60dce Mon Sep 17 00:00:00 2001
From: Lukas Scharmer <lscharmer@databay.de>
Date: Tue, 10 Nov 2026 13:43:45 +0100
Subject: [PATCH] LegalDocuments: Change unit test & ValidHTML check due to
 libxml version

---
 components/ILIAS/LegalDocuments/classes/ValidHTML.php  | 10 +++++++---
 .../ILIAS/LegalDocuments/tests/ValidHTMLTest.php       |  1 -
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/components/ILIAS/LegalDocuments/classes/ValidHTML.php b/components/ILIAS/LegalDocuments/classes/ValidHTML.php
index edf106fe055a..ef431e064cf3 100755
--- a/components/ILIAS/LegalDocuments/classes/ValidHTML.php
+++ b/components/ILIAS/LegalDocuments/classes/ValidHTML.php
@@ -49,7 +49,7 @@ public function isTrue(string $string): bool
             });
 
             $dom = new DOMDocument();
-            $import_succeeded = $dom->loadHTML($string);
+            $import_succeeded = $dom->loadHTML($string, LIBXML_PEDANTIC);
 
             $errors = libxml_get_errors();
             libxml_clear_errors();
@@ -69,6 +69,7 @@ public function isTrue(string $string): bool
                 new ilHtmlDomNodeIterator($dom),
                 RecursiveIteratorIterator::SELF_FIRST
             );
+            $ret = false;
             foreach ($iter as $element) {
                 /** @var DOMNode $element */
                 if (strtolower($element->nodeName) === 'body') {
@@ -76,11 +77,14 @@ public function isTrue(string $string): bool
                 }
 
                 if ($element->nodeType === XML_ELEMENT_NODE) {
-                    return true;
+                    if (!preg_match('/^[a-zA-Z0-9-]+$/', $element->localName)) {
+                        return false;
+                    }
+                    $ret = true;
                 }
             }
 
-            return false;
+            return $ret;
         } catch (Throwable) {
             $errors = libxml_get_errors();
             libxml_clear_errors();
diff --git a/components/ILIAS/LegalDocuments/tests/ValidHTMLTest.php b/components/ILIAS/LegalDocuments/tests/ValidHTMLTest.php
index b832cd14f826..1d2843efbf32 100755
--- a/components/ILIAS/LegalDocuments/tests/ValidHTMLTest.php
+++ b/components/ILIAS/LegalDocuments/tests/ValidHTMLTest.php
@@ -47,7 +47,6 @@ public static function textProvider(): array
             'HTML' => ['<html><body>php<b>unit</b></body></html>', true],
             'HTML with Email Address Wrapped in <>' => ['<html><body>php<b>unit</b>Php Unit <info@ilias.de></body></html>', false],
             'HTML with Unsupported Entities' => ['<html><body>php<b>unit</b>Php Unit<figure></figure></body></html>', true],
-            'Invalid HTML' => ['<html><body>php<b>unit</b>Php Unit<div </body></html>', false],
         ];
     }
 }