From 4a479e48db3740ade48a64e77b357243322deb89 Mon Sep 17 00:00:00 2001
From: Johannes Meyer <johannes.meyer@icinga.com>
Date: Tue, 25 Mar 2025 10:37:07 +0100
Subject: [PATCH] Pdf: Ensure dompdf can create temporary files

This is required since dompdf seems to automatically load
our custom font and complains otherwise.

(cherry picked from commit 191444ccd9bb3ea8ef1a2502a8c981e3b66a98cd)
---
 library/Icinga/File/Pdf.php | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/library/Icinga/File/Pdf.php b/library/Icinga/File/Pdf.php
index e159e2fce..8ccdb7bb8 100644
--- a/library/Icinga/File/Pdf.php
+++ b/library/Icinga/File/Pdf.php
@@ -5,9 +5,11 @@ namespace Icinga\File;
 
 use Dompdf\Dompdf;
 use Dompdf\Options;
+use Exception;
 use Icinga\Application\Icinga;
 use Icinga\Exception\ProgrammingError;
 use Icinga\Util\Environment;
+use Icinga\Web\FileCache;
 use Icinga\Web\Hook;
 use Icinga\Web\Url;
 
@@ -79,8 +81,17 @@ class Pdf
             return;
         }
 
+        $tmpDir = FileCache::instance()->directory('legacy_pdf');
+        if ($tmpDir === false) {
+            throw new Exception('Could not create temporary directory for PDF rendering');
+        }
+
         $options = new Options();
         $options->set('defaultPaperSize', 'A4');
+        $options->set('fontDir', $tmpDir);
+        $options->set('fontCache', $tmpDir);
+        $options->set('tempDir', $tmpDir);
+        $options->set('chroot', $tmpDir);
         $dompdf = new Dompdf($options);
         $dompdf->loadHtml($html);
         $dompdf->render();