From 2c3939d1478ecf434ccb5e9075849e2bd0e045a0 Mon Sep 17 00:00:00 2001
From: danielpetri1 <daniel.petri@tum.de>
Date: Mon, 11 Mar 2024 21:18:39 +0000
Subject: [PATCH] Set CairoSVG unsafe flag

---
 bbb-export-annotations/config/settings.json |  3 ++-
 bbb-export-annotations/workers/process.js   | 10 ++++++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/bbb-export-annotations/config/settings.json b/bbb-export-annotations/config/settings.json
index 8352a33b80..d5e46856d6 100644
--- a/bbb-export-annotations/config/settings.json
+++ b/bbb-export-annotations/config/settings.json
@@ -20,7 +20,8 @@
       "maxImageHeight": 1080,
       "textScaleFactor": 2,
       "pointsPerInch": 72,
-      "pixelsPerInch": 96
+      "pixelsPerInch": 96,
+      "cairoSVGUnsafeFlag": true
     },
     "notifier": {
       "pod_id": "DEFAULT_PRESENTATION_POD",
diff --git a/bbb-export-annotations/workers/process.js b/bbb-export-annotations/workers/process.js
index 86ab5757ea..2107f0d5a1 100644
--- a/bbb-export-annotations/workers/process.js
+++ b/bbb-export-annotations/workers/process.js
@@ -870,12 +870,18 @@ async function process_presentation_annotations() {
       }
     });
 
-    // Scale slide back to its original size
+/**
+ * Constructs the command arguments for converting an annotated slide from SVG to PDF format.
+ * `cairoSVGUnsafeFlag` should be enabled (true) for CairoSVG versions >= 2.7.0
+ * to allow external resources, such as presentation slides, to be loaded.
+ *
+ * @const {string[]} convertAnnotatedSlide - The command arguments for the conversion process.
+ */
     const convertAnnotatedSlide = [
       SVGfile,
       '--output-width', to_px(slideWidth),
       '--output-height', to_px(slideHeight),
-      '-u',
+      ...(config.process.cairoSVGUnsafeFlag ? ['-u'] : []),
       '-o', PDFfile,
     ];